WO2011111721A1 - Battery connecting tool and battery pack module using same - Google Patents

Battery connecting tool and battery pack module using same Download PDF

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Publication number
WO2011111721A1
WO2011111721A1 PCT/JP2011/055445 JP2011055445W WO2011111721A1 WO 2011111721 A1 WO2011111721 A1 WO 2011111721A1 JP 2011055445 W JP2011055445 W JP 2011055445W WO 2011111721 A1 WO2011111721 A1 WO 2011111721A1
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WO
WIPO (PCT)
Prior art keywords
electrode
battery
connection tool
connection
unit cell
Prior art date
Application number
PCT/JP2011/055445
Other languages
French (fr)
Japanese (ja)
Inventor
修一 伊藤
Original Assignee
株式会社キャプテックス
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Filing date
Publication date
Application filed by 株式会社キャプテックス filed Critical 株式会社キャプテックス
Publication of WO2011111721A1 publication Critical patent/WO2011111721A1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/564Terminals characterised by their manufacturing process
    • H01M50/567Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/524Organic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/526Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/552Terminals characterised by their shape
    • H01M50/559Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/569Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/574Devices or arrangements for the interruption of current
    • H01M50/579Devices or arrangements for the interruption of current in response to shock
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present invention relates to a battery connection tool and an assembled battery module using the battery connection tool. More specifically, for example, the present invention relates to a battery connection tool capable of improving the reliability of electrical connection between an electrode such as a secondary battery and a connection terminal, and an assembled battery module using the battery connection tool.
  • lithium ion batteries are superior in charge / discharge characteristics, lightweight, and environmental and human compared to other secondary batteries (eg, nickel cadmium storage battery, nickel hydrogen battery). Does not contain substances that are said to have adverse effects. For this reason, the technological development of lithium ion batteries is particularly advanced, and excellent products are distributed in the market.
  • lithium ion batteries there are various types of lithium ion batteries such as a button type, a cylindrical type, an elliptical column type, and a rectangular column type.
  • Cylindrical lithium ion batteries for example, 18650 type and 26650 type have been developed.
  • a lithium ion battery such as a 18650 type is in the form of an assembled battery module in which the lithium ion batteries are combined, and is widely used as a power source for, for example, a notebook personal computer, a power tool, and an electrically assisted bicycle.
  • resistance welding for example, resistance welding, laser welding, or the like has been adopted for connection between electrodes of a secondary battery or the like in addition to soldering connection in order to increase the connection strength.
  • resistance welding spot welding
  • this spot welding in order to increase the yield, it is common to perform welding at a plurality of locations on the same electrode (so-called multi-point welding). Further, in order to prevent welding from becoming insufficient, for example, in a connection terminal in which multi-point welding is performed on one electrode, it is common to provide a notch between each welded portion.
  • connection terminal repeats thermal expansion and contraction due to heat generated by the secondary battery during charging and discharging. Therefore, the stress on the connection portion with the electrode is further increased.
  • the number of connection portions increases, and thus a strong and more reliable electrical connection is required between the electrode and the connection terminal.
  • the present invention aims to solve the above problems.
  • the purpose is to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and reliability and stability of each electrical connection when configuring an assembled battery module It is an object of the present invention to provide a battery connecting tool that holds the battery and an assembled battery module using the same.
  • the battery connection tool of the present invention comprises: Including electrode mounting part and connection terminal, The connection terminal is connected to the electrode mounting portion;
  • the electrode mounting portion includes an electrode contact portion disposed on the upper surface of the electrode and a fixing portion disposed on the side surface of the electrode or the side surface of the battery body. It is characterized by that.
  • the assembled battery module of the present invention is An assembled battery module in which two or more batteries are connected, wherein the battery connection tool of the present invention is used to connect the two or more batteries.
  • the battery connection tool of the present invention for example, it is excellent in vibration resistance without being connected by welding such as resistance welding between an electrode such as a secondary battery and a connection terminal, and also generates heat during charging and discharging. An extremely good electrical connection can be made without being influenced.
  • (A) is a perspective view which shows the structure of an example in Embodiment 1 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the AA direction of a connection tool.
  • (A) is a perspective view for explaining connection of the unit cell of the example to the negative electrode,
  • (b) is a perspective view showing the connection state, and
  • (c) is a BB direction of the connection state shown in (b).
  • Cross-sectional view (d) is a perspective view for explaining connection of the unit cell of the example to the positive electrode, (e) is a perspective view showing the connection state, and (f) is a C state of the connection state shown in (e).
  • Sectional view seen in the -C direction, (g) is a perspective view showing another example of the connection state of the unit cell of the example to the negative electrode.
  • (A) is a perspective view showing the configuration of another example in Embodiment 1, (b) is a top view, (c) is a bottom view, and (d) is a D-- of the battery connection tool shown in (a). It is sectional drawing seen in the D direction.
  • (A) is a perspective view for explaining the connection of the unit cells of the other examples to the negative electrode, (b) is a perspective view showing the connection state, and (c) is an EE in the connection state shown in (b).
  • (D) is a perspective view for explaining the connection of the unit cell of the other example to the positive electrode
  • (e) is a perspective view showing the connection state
  • (f) is shown in (e). It is sectional drawing seen in the FF direction of the connection state.
  • (A) is a perspective view which shows the structure of the further another example in Embodiment 1, (b) is the same top view, (c) is the same bottom view, (d) is G of the battery connection tool shown in (a). It is sectional drawing seen in-G direction.
  • (A) is a perspective view explaining the connection of the battery connection tool shown in FIG. 5 to the negative electrode of the unit cell
  • (b) is a perspective view showing the connection state
  • (c) is a connection shown in (b).
  • FIG. 5D is a cross-sectional view of the state viewed in the HH direction
  • FIG. 5D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 5 to the positive electrode of the unit cell
  • FIG. (F) It is sectional drawing seen in the II direction of the connection state shown to (e).
  • (A) is a perspective view which shows the structure of the further another example in Embodiment 1,
  • (b) is the same top view,
  • (c) is the same bottom view.
  • (D) is a cross-sectional view of the battery connection tool shown in (a) as viewed in the JJ direction, and
  • (e) is a bottom view showing the configuration of still another example in the first embodiment.
  • (A) is a perspective view for explaining the connection of the battery connection tool shown in FIG.
  • FIG. 7D is a cross-sectional view in the KK direction of the state
  • FIG. 7D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 7 to the positive electrode of the unit cell
  • FIG. (F) is a cross-sectional view of the connection state shown in (e) as viewed in the LL direction.
  • A) is the perspective view which shows the structure of the further another example in Embodiment 1
  • (b) is the top view
  • (c) is the bottom view
  • (d) is M of the battery connection tool shown to (a).
  • FIG. 9A is a figure which shows the preparation method and structure of an example of a needle-like protrusion.
  • B is a figure which shows the structure of the other example of a needle-like protrusion.
  • C is a figure which shows the structure of the further another example of a acicular protrusion.
  • A) is a perspective view explaining the connection to the negative electrode of the cell of the battery connection tool shown in FIG. 9A
  • (b) is a perspective view showing the connection state
  • (c) is the connection shown in (b).
  • FIG. 9D is a perspective view illustrating connection of the battery connection tool shown in FIG. 9A to the positive electrode of the unit cell
  • FIG. 9E is a perspective view illustrating the connection state.
  • FIG. 11D is a cross-sectional view in the QQ direction of the state, FIG.
  • FIG. 11D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 11 to the positive electrode of the unit cell
  • FIG. (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e).
  • (A) is a perspective view which shows the structure of an example in Embodiment 2 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in SS direction of a connection tool.
  • (A) is a perspective view for explaining connection to the unit cell of the example,
  • (b) is a perspective view showing the connection state, and (c) is seen in the TT direction of the connection state shown in (b). It is sectional drawing.
  • FIG. (A) is a perspective view which shows the structure of the other example in Embodiment 2
  • (b) is a perspective view explaining the connection state to the cell of the said other example.
  • (C) is a perspective view which shows the structure of the further another example in Embodiment 2.
  • FIG. (A) is a top view which shows the structure of an example in Embodiment 3 of the assembled battery module of this invention
  • (b) is the top view which looked at the assembled battery module from the opposite side to (a).
  • (A) is a top view which shows the structure of the other example in Embodiment 3
  • (b) is the top view which looked at the same assembled battery module from the opposite side to (a).
  • (A) is a perspective view which shows the structure of an example in Embodiment 4 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the U direction of the connection tool.
  • (A) is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is seen in the VV direction of the connection state shown in (b). It is sectional drawing.
  • (A) is a perspective view which shows the structure of an example in Embodiment 5 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a).
  • FIG. 1 is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is viewed in the XX direction of the connection state shown in (b). It is sectional drawing.
  • (A) is a top view which shows the structure of an example in Embodiment 6 of the assembled battery module of this invention, (b) is the top view which looked at the assembled battery module from the opposite side to (a).
  • the “side surface of the electrode” in the “fixed portion” indicates a side surface near the end surface on the positive electrode side in the unit cell.
  • the “side surface of the battery body” in the “fixing portion” indicates a side surface near the end surface on the negative electrode side in the unit cell.
  • the battery connection tool of the present invention may have, for example, a form in which at least two of the fixing portions are provided at intervals on the edge of the electrode contact portion, and the fixing portion is annular. And the form by which the said cyclic
  • the fixing portion can bite into the side surface of the electrode or the side surface of the battery body.
  • the electrode contact portion is plate-shaped and the electrode contact portion is curved in a convex shape toward the electrode side.
  • a protrusion is formed on the electrode contact surface of the electrode contact portion.
  • a conductive resin layer is formed on the electrode contact surface of the electrode contact portion.
  • the battery connection tool of the present invention further includes a voltage monitoring terminal, and the voltage monitoring terminal is connected to the connection terminal.
  • the battery connection tool of the present invention is preferably for secondary battery connection.
  • the battery connection tool of the present invention may include, for example, two electrode mounting portions, and the two electrode mounting portions are connected by the connection terminals.
  • the battery connection tool of the present invention includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and one of the electrode mounting portions is a single cell. It may be an electrode mounting portion (positive electrode mounting portion) that can be mounted on the positive electrode, and the other electrode mounting portion may be an electrode mounting portion (negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell.
  • the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminals, and both the electrode attachment portions are attached to the positive electrode of the unit cell.
  • the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminal, and both the electrode attachment portions are attached to the negative electrode of the unit cell.
  • the form which is a possible electrode attachment part (attachment part for negative electrodes) may be sufficient.
  • the battery connection tool of the present invention may have a configuration in which the number of the electrode attachment portions is one and the connection terminal is a connection terminal for connection to an external terminal.
  • the battery connection tool of the present invention may have a configuration in which the electrode attachment portion is an electrode attachment portion (a positive electrode attachment portion) that can be attached to the positive electrode of the unit cell.
  • the battery connection tool of the present invention may be configured such that the electrode mounting portion is an electrode mounting portion (a negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell.
  • At least one battery electrode is connectable to an external terminal, and the battery connection tool of the present invention is used for connection to the external terminal.
  • the battery is preferably a secondary battery.
  • Embodiment 1 In FIG. 1, the structure of an example of the battery connection tool of this embodiment is shown.
  • 1A is a perspective view of the battery connection tool of the present embodiment
  • FIG. 1B is a top view of the battery connection tool
  • FIG. 1C is a bottom view of the battery connection tool
  • FIG. It is sectional drawing seen in A direction.
  • the battery connection tool 10 includes a conductive cap 11 and a conductive connection terminal 13.
  • the connection terminal 13 is connected to the cap 11.
  • the cap 11 includes a circular plate 11a and three claws 11b.
  • the three claws 11b are provided at intervals on the edge of the plate 11a.
  • the “cap” in the present embodiment corresponds to an “electrode mounting portion” in the present invention.
  • the “plate” in the present embodiment corresponds to an “electrode contact portion” in the present invention.
  • the “nail” in the present embodiment corresponds to a “fixing portion” in the present invention. The same applies to Embodiments 2 to 6 described later.
  • FIG. 2 shows the connection of the battery connection tool of this embodiment to the electrode of the unit cell.
  • (a) to (c) show the connection of the battery connection tool of this embodiment to the negative electrode of the unit cell.
  • C) is a cross-sectional view of the connection state shown in (b) as seen in the BB direction.
  • (D) to (f) show the connection of the battery connection tool of the present embodiment to the positive electrode of the unit cell.
  • (F) is a cross-sectional view seen in the CC direction of the connected state shown in (e).
  • the cap is, for example, a cap having a size that can be put on the negative electrode.
  • the battery connection tool 10 and the cylindrical cell 21 are prepared.
  • the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the negative electrode 22 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet.
  • the negative electrode 22 is inserted between the three claws 11b, and the cap 11 is placed on the negative electrode 22 of the unit cell 21.
  • the cap may be covered with the negative electrode of the unit cell while applying pressure.
  • the plate 11a which is an electrode contact part is arrange
  • fixed part is arrange
  • the cap is, for example, a cap having a size that can be put on the positive electrode protruding from the end of the unit cell.
  • the battery connection tool 10 and the cylindrical cell 21 are prepared.
  • the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the positive electrode 23 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet.
  • the positive electrode 23 is inserted between the three claws 11 b and the cap 11 is placed on the positive electrode 23 of the unit cell 21.
  • the plate 11a which is an electrode contact part is arrange
  • claw 11b which is a fixing
  • the battery connection tool of this embodiment can be electrically connected to the electrode of the cylindrical unit cell, and using the claw that is the fixing portion, The battery connection tool of this embodiment can be physically connected to the electrode of a cylindrical unit cell. For this reason, for example, when welding such as resistance welding is used to connect the cell to the electrode, the problem of stress concentration due to vibration or breakage between the electrode and the connection terminal due to metal fatigue is suppressed. be able to. As a result, in the battery connection tool of this embodiment, it is possible to prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and the assembled battery module is configured in combination with the single cell. At this time, the reliability and stability of each electrical connection can be maintained.
  • the battery connection tool of the present embodiment good connection is possible without electrical or physical connection to the electrode of the cylindrical unit cell, for example, by welding such as resistance welding. Therefore, the following excellent effects can be obtained. That is, first, there is no connection variation that may occur when connecting by welding. As a result, the connection reliability is high and the connection quality is stable. Moreover, the stress by the heat which arises when welding is not applied to each cell. As a result, it is possible to avoid a decrease in the life of each unit cell due to thermal stress. Moreover, since the severe condition of welding is not added to a single battery etc., it is not influenced by the quality of the welding connection by the wear of the welding rod used in the case of resistance welding, for example.
  • the connection by welding is not performed, the generation of rust on the electrode surface can be suppressed.
  • the assembled battery module after use can be safely disassembled, the cost for resource recycling can be suppressed.
  • special welding equipment such as resistance welding and laser welding is not required. As a result, the assembled battery module can be manufactured at low cost.
  • the claw may be caulked and a part of the claw may be bitten into the side surface of the electrode or the side surface of the battery body.
  • the caulking jig (not shown) with the cap 11 placed on the negative electrode 22 of the unit cell 21.
  • a desired position of the claw 11b is caulked in a line shape (caulking portion 24), so that a part of the claw 11b as a fixing portion is bitten into the side surface of the battery body (negative electrode 22).
  • the cap 11 can be attached to the negative electrode 22 of the unit cell 21.
  • the battery connection tool of the present embodiment can be physically and firmly connected to the negative electrode of the cylindrical unit cell.
  • the cap 11 is placed on the positive electrode 23 of the unit cell 21 and a caulking jig (not shown) is used, as shown in FIGS. 2 (e) and 2 (f).
  • a desired position of the claw 11b is caulked in a line (caulking part 24), and a part of the claw 11b as a fixing part is bitten into the side surface of the electrode (positive electrode 23).
  • the cap 11 can be attached to the positive electrode 23 of the unit cell 21.
  • the battery connection tool of the present embodiment can be physically and firmly connected to the positive electrode of the cylindrical unit cell.
  • the claws are caulked so that a part of the claws bites into the side surface of the electrode or the side surface of the battery body. For this reason, the battery connection tool of this embodiment can be physically firmly connected to the electrode of the cylindrical unit cell. As in this embodiment, the physical connection between the battery connection tool and the electrode of the unit cell is performed by mechanical connection, so that the occurrence of connection failure can be further suppressed.
  • each of the claws is caulked in a line shape, but the present invention is not limited to this example.
  • a portion of the claw 11b which is a fixing portion is bitten into the side surface of the battery body (negative electrode) by caulking the claws in a dot shape (caulking portion 25).
  • the cap 11 is firmly fixed to the negative electrode 22 of the unit cell 21 by being crowned, but the present invention is not limited to this example.
  • connection by welding is not performed.
  • this does not limit the combined use of welding in the present invention.
  • the welded portion is physically connected and fixed to the unit cell by the battery connecting tool in addition to the welded portion, so that the welded portion is hardly broken.
  • the welding include resistance welding, laser welding, arc welding, and the like.
  • the unit cell to which the battery connection tool of the present invention is connected is not particularly limited, and examples thereof include a primary battery and a secondary battery. Among these, a secondary battery is preferable. Examples of the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery. Among these, a lithium ion battery is particularly preferable.
  • the battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal.
  • the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment includes the cap 11 and the connection terminal 13.
  • the cap 11 includes a plate 11a and three claws 11b.
  • the cap 11 can have any appropriate size or shape depending on the size or shape of the electrode of the unit cell connected thereto.
  • the formation material of the cap 11 should just have electroconductivity, for example, is the same as the formation material of the electrode of a cell.
  • examples of the forming material include iron, which can be nickel-plated, tin-plated, and zinc-plated, which is a rust-proofing process.
  • examples of the forming material include phosphor bronze, brass, red copper, hard copper, nickel, and aluminum from the viewpoint of fitting strength.
  • the shape of the plate 11a is a circle.
  • the present invention is not limited to this example.
  • it may be a rectangle such as a square or a rectangle, a polygon such as a hexagon, or a combination of these.
  • the size of the plate 11a is, for example, equal to the size of the electrode surface of the unit cell, or larger than the plate thickness of the cap.
  • the thickness of the plate 11a is not particularly limited.
  • a conductive resin layer with high electrical conductivity may be formed on the electrode contact surface of the plate 11a in order to reduce electrical contact resistance.
  • the contact area between the plate and the battery can be increased, so that connection with less electrical resistance is possible.
  • the material for forming the conductive resin layer include PTC (Positive Temperature Coefficient), silver paste, aluminum paste, nickel paste, and carbon kneaded resin.
  • a heat dissipation promotion layer may be formed.
  • the material for forming the heat dissipation promoting layer include high thermal conductive resin, metal paste, and heat dissipation silicone grease.
  • these layers may be used alone or in combination of two or more.
  • the thickness of these layers should just be the range which does not inhibit an electrical connection.
  • these layers can be formed by applying the above-described forming material to, for example, the electrode contact surface of the plate.
  • a rust prevention layer may be formed around a welding part after welding. Examples of the material for forming the rust preventive layer include a rust preventive agent and an antioxidant.
  • the welded portion can be rust-proofed if it is a conductive material.
  • the present invention is not limited to this example.
  • the number of the nails may be at least two, for example, two, four, five or six, or more.
  • the size of the claw 11b is, for example, a size that can sufficiently hold the electrode when the cap is connected to the electrode of the unit cell.
  • claw is not limited to this example, According to the shape etc. of the electrode to connect, it can be set as various shapes. For example, in the case where an exhaust port is provided in the electrode, for example, a return protrusion may be provided at the tip of the claw so as to be hooked on the exhaust port.
  • connection terminal 13 is the same as that of the cap 11, for example.
  • the length of the connection terminal 13 is not particularly limited, and can be an arbitrary length depending on the application of the battery connection tool of the present embodiment.
  • the connection terminal is a voltage monitoring instrument or a voltage data processing device (voltage monitoring circuit). ) May be used.
  • a voltage monitoring terminal may be connected to the connection terminal.
  • the battery connection tool of this embodiment can be connected to a voltage monitoring measuring instrument or a voltage data processing device.
  • the voltage monitoring terminal may be, for example, a terminal branched from the connection terminal.
  • the connection terminal may also serve as the voltage monitoring terminal. Details of the voltage connection terminal will be described later.
  • the battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal.
  • the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment can be manufactured by, for example, integrally molding a plate of a material that forms a cap and a connection terminal by press punching.
  • the battery connection tool of the present embodiment can be manufactured by wire cutting, cutting a plate of material into a predetermined size, and bending it with a jig. Simultaneously with the bending process, the connection tool of this embodiment can be attached to the battery.
  • the method for manufacturing the battery connection tool of the present embodiment is not limited to this example.
  • the fixing portion is three claws, but the present invention is not limited to this example.
  • the one fixing portion may be provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion.
  • FIG. 3 shows a configuration of an example of a battery connection tool in which the one fixing portion is provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion. 3, (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a DD direction of the battery connection tool shown in (a).
  • FIG. FIG. 4 shows the connection of the battery connection tool to the cell electrode.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view of the connected state shown in (b) as viewed in the EE direction.
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connection state shown in (e) as viewed in the direction FF.
  • the conductive cap 31 includes a circular plate 11 a and a single skirt 31 b that is a fixing portion.
  • the skirt 31b is provided in an annular shape around the entire periphery of the edge of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • a caulking jig (not shown) is used to caulk the entire circumference of the skirt 31b as a fixing part (the caulking part in FIGS. 4B and 4C). 44) A part of the skirt 31b is bitten into the side surface of the battery main body (negative electrode 22). In this way, the cap 31 is attached to the negative electrode 22 of the unit cell 21. Further, by caulking the entire circumference of the skirt 31b as a fixing portion (caulking portion 44 in FIGS. 4 (e) and 4 (f)), a part of the skirt 31b is bitten into the side surface of the electrode (positive electrode 23). . In this way, the cap 31 is attached to the positive electrode 23 of the unit cell 21.
  • the battery connection tool 30 is connected to the electrodes (negative electrode and positive electrode) of the unit cell 21 in the same manner as the battery connection tool 10 described above.
  • the connection strength can be improved as compared with the battery connection tool 10 described above.
  • FIG. 5 shows a configuration of an example of a battery connection tool in which the slit is formed.
  • FIG. 6 shows the connection of the battery connection tool to the electrode of the unit cell.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the HH direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connected state shown in (e) as seen in the II direction.
  • a slit 54 having a long hole is formed near the center of the surface of the plate 11a in a direction orthogonal to the direction in which the connection terminals 13 are connected.
  • the direction of the slit is not particularly limited, and may be, for example, a direction parallel to the direction in which the connection terminal is connected, or is inclined at a desired angle from the direction in which the connection terminal is connected. Orientation may be used.
  • the slit may be a long hole formed in the plate as in the present embodiment, or may be a notch formed from an end of the plate.
  • the length of the slit may be any length that can concentrate the welding current in resistance welding described later.
  • variety and formation location of the said slit are not restrict
  • the connection strength by resistance welding is improved and the reliability of connection in resistance welding is improved. Can be improved.
  • the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21.
  • two electrodes (welding rod, not shown) for welding are brought into contact with the plate 11a with the slit 54 interposed therebetween. In this state, resistance welding is performed by passing a welding current between the electrodes (welded portion 61 in FIG. 6C or FIG. 6F).
  • the battery connection tool 50 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 10 described above.
  • both the welding rods are brought into contact with the plate 11a with the slit 54 interposed therebetween. Therefore, among the welding currents flowing between the electrodes, the welding current flowing on the surface of the plate 11a is suppressed.
  • the diffusion of the welding current can be suppressed, it is easy to control the welding current amount set during resistance welding. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be reduced, and reduction in connection strength due to insufficient welding current can be suppressed.
  • FIG. 7A to FIG. 7D show a configuration of an example of a battery connection tool on which the projection is formed.
  • (A) is a perspective view of the battery connection tool
  • (b) is a top view of the battery connection tool
  • (c) is a bottom view of the battery connection tool
  • (d) is a cross-sectional view of the battery connection tool shown in FIG. It is.
  • FIG. 8 shows the connection of this battery connection tool to the electrode of the unit cell.
  • (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the KK direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view in the LL direction of the connected state shown in (e).
  • one projection (protrusion) 75 is formed on each side of the slit 54 formed near the center of the surface of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 50 described above.
  • the number of projections is not particularly limited, and for example, two projections 75 may be formed on both sides of the slit 54 as shown in FIG.
  • the connection strength by resistance welding is further improved, and the connection reliability in resistance welding is improved.
  • the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21.
  • two electrodes for welding welding rod, not shown
  • resistance welding is performed by flowing a welding current between the two welding rods (welded portion 81 in FIGS. 8C and 8F).
  • the battery connection tool 70 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 50 described above.
  • the welding current sent between the said welding rods can be concentrated more. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be further reduced, and a decrease in connection strength due to insufficient welding current can be further suppressed.
  • FIG. 9A shows a configuration of an example of a battery connection tool on which the protrusion is formed.
  • 9A (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a MM direction of the battery connection tool shown in (a).
  • FIG. FIG. 10 shows the connection of the battery connection tool to the cell electrode.
  • (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view of the connection state shown in (b) as viewed in the NN direction.
  • D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view of the connected state shown in (e) as viewed in the OO direction.
  • needle-like protrusions 96 are formed on the electrode contact surface 11A of the plate 11a.
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • the acicular protrusion 96 can be formed, for example, by performing a burring process on the plate 11a.
  • the needle-like protrusion 96 may be, for example, a protrusion having a shape (burring penetrating shape) formed by penetrating the plate 11a by the burring process.
  • the cap 11 when the battery connection tool 90 is connected to the single cell 21, the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the single cell 21 while applying pressure, so that FIG. As shown in FIG. 10C, or FIG. 10E and FIG. 10F, the needle-like protrusion 96 can be pierced into the negative electrode 22 or the positive electrode 23. Except for these, the battery connection tool 90 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. Thereby, the connection of the cap 11 and an electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable. Moreover, since a contact area with the electrode of a cell can be increased, for example, contact resistance can be reduced. When the contact resistance is increased, heat is generated and the battery is deteriorated. Therefore, it is preferable that the contact resistance can be reduced.
  • the needle-like protrusion 96 is formed on the electrode contact surface 11A of the plate 11a, but the present invention is not limited to this example. Any protrusion may be used as long as the above-described effect can be obtained.
  • the protrusions 96B are examples. Also, as shown in FIG.
  • the electrode contact portion may have a plate shape, and the electrode contact portion may be convexly curved toward the electrode side of the unit cell.
  • FIG. 11 the structure of an example of the battery connection tool in which the said electrode contact part is curving convexly toward the electrode side of a cell is shown.
  • 11A is a perspective view of the battery connection tool
  • FIG. 11B is a top view of the battery connection tool
  • FIG. 11C is a bottom view of the battery connection tool
  • FIG. FIG. FIG. 12 shows the connection of the battery connection tool to the electrode of the unit cell.
  • (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell.
  • (C) is a cross-sectional view in the QQ direction of the connected state shown in (b).
  • (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell.
  • (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e).
  • the conductive cap 111 includes a plate-like circular plate 111 a and three claws 11 b that are fixing portions.
  • the plate 111a is curved toward the electrode side of the unit cell (the electrode contact surface 111A side of the plate 111a).
  • Other configurations are the same as those of the battery connection tool 10 described above.
  • the connection of the battery connection tool to the cell electrode will be described.
  • the negative electrode 22 or the positive electrode 23 is inserted between the three claws 11b, and the cap 111 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21 while applying pressure.
  • a desired position of the claw 11b is caulked in a line using a caulking jig (not shown) (FIGS. 12B and 12C, or 12E).
  • the caulking portion 24 in FIG. 12 (f) and a part of the claw 11b which is the fixing portion is bitten into the side surface of the battery body (negative electrode 22) or the side surface of the electrode (positive electrode 23).
  • the plate 111a which was curving to the electrode contact surface 111A side, It comes into contact with the negative electrode 22 or the positive electrode 23 of the unit cell 21 and becomes flat. Except for these, the battery connection tool 110 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. For this reason, as shown in FIG.12 (c) and FIG.12 (f), force is applied toward the electrode of the cell 21 from the plate 111a (downward arrow). As a result, the connection between the cap 111 and the electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable.
  • the claw or the skirt is caulked in order to physically and firmly connect the battery connection tool to the electrode of the unit cell, but the present invention is not limited to this example.
  • the side surface portion of the electrode of the unit cell when threaded, it corresponds to the surface on the electrode contact side of the fixing portion such as the nail or the skirt of the battery connection tool of the present invention. Screw processing may be given.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by screwing.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by fitting with the snap structure. If they can be fitted with a snap structure, they can be firmly fixed without performing a caulking step, which is preferable in terms of work efficiency and is suitable for mass production.
  • the electrode contact surface of the electrode contact portion of the battery connection tool of the present invention A hook of a hook-and-loop fastener that is electrically conductive may be formed.
  • the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by bonding an electrically conductive hook-and-loop fastener.
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, one of the electrode mounting portions is the positive electrode mounting portion, and the other The electrode mounting portion is a negative electrode mounting portion.
  • FIG. 13 shows an example of the configuration of the battery connection tool of the present embodiment.
  • (a) is a perspective view of the battery connection tool of this embodiment
  • (b) is a top view thereof
  • (c) is a bottom view thereof
  • (d) is an S-- of the battery connection tool shown in (a). It is sectional drawing seen in the S direction.
  • the battery connection tool 130 includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133.
  • the connection terminal 133 is connected to the positive electrode cap 131 and the negative electrode cap 132.
  • the positive electrode cap 131 includes a circular plate 131a and three claws 131b.
  • the three claws 131b are provided at the edge of the plate 131a with a space between each other.
  • the negative electrode cap 132 includes a circular plate 132a and three claws 132b.
  • the three claws 132b are provided at intervals on the edge of the plate 132a.
  • an elongated slit 134a is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected.
  • an elongated slit 134b is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected.
  • the “positive electrode cap” in the present embodiment corresponds to the “positive electrode mounting portion” in the present invention.
  • the “negative electrode cap” in the present embodiment corresponds to the “negative electrode mounting portion” in the present invention.
  • the battery connection tool of this embodiment may include, for example, a connection terminal for connecting to the external terminal described above.
  • FIG. 14C is a cross-sectional view of the connection state shown in FIG. 14B viewed in the TT direction.
  • a battery connection tool 130 and two cylindrical unit cells 141a and 141b are prepared.
  • the center of the plate 131a and the center of the positive electrode 143a of one unit cell 141a are aligned using a jig or tool (not shown) that can attract or hold the positive electrode cap 131 and the negative electrode cap 132 with a magnet.
  • the positive electrode cap 131 is positioned above the unit cell 141a.
  • the negative electrode cap 132 is positioned above the unit cell 141b so that the center of the plate 132a and the center of the negative unit 142b of the other unit cell 141b are aligned.
  • the positive electrode cap 131 and the negative electrode cap 132 are moved downward.
  • the positive electrode 143a of the single cell 141a is fitted between the three claws 131b of the positive electrode cap 131, and the positive electrode cap 131 is placed over the positive electrode 143a of the single cell 141a.
  • the plate 131a which is an electrode contact part is arrange
  • the negative electrode 142b of the single cell 141b is fitted between the three claws 132b of the negative electrode cap 132, and the negative electrode cap 132 is placed over the negative electrode 142b of the single cell 141b.
  • the plate 132a which is an electrode contact part is arrange
  • a fixed portion is obtained by caulking a desired position of the claw 132b in a line using a caulking jig (not shown) (caulking portion 144b in FIGS. 14B and 14C).
  • a part of the claw 132b is bitten into the side surface of the battery body (negative electrode 142b) of the unit cell 141b.
  • the negative electrode cap 132 is attached to the negative electrode 142b of the unit cell 141b.
  • the claw 132b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 142b) of the unit cell 141b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell.
  • the method for caulking the claws 131b and 132b is the same as the method shown in the first embodiment, for example.
  • the positive electrode cap 131 and the positive electrode 143a of the unit cell 141a are further welded and connected by resistance welding with the slit 134a interposed therebetween (welded portion 145a in FIG. 14C).
  • the negative electrode cap 132 and the negative electrode 142b of the unit cell 141b are welded and connected by resistance welding with the slit 134b interposed therebetween (welded portion 145b in FIG. 14C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment is electrically connected to the positive electrode of one unit cell and the negative electrode of the other unit cell in two cylindrical unit cells, and is physically Can be firmly connected.
  • the two unit cells 141a and the unit cells 141b are connected in series by the battery connection tool of the present embodiment, and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used, for example, for series connection of the positive and negative electrodes of two unit cells in the assembled battery module.
  • the battery connection tool of this embodiment can be suitably used, for example, for series connection of the positive and negative electrodes of two unit cells in the assembled battery module.
  • the battery connection tool of the present invention is not limited or limited by the above description.
  • both the positive electrode cap 131 and the negative electrode cap 132 are simultaneously (collectively) electrically and physically connected to the electrodes of each unit cell. It is not limited to.
  • the positive electrode cap 131 and the negative electrode cap 132 may be electrically and physically connected to the electrodes of each unit cell sequentially. The same applies to Embodiments 4 and 5 described later.
  • the battery connection tool of the present embodiment may further include a voltage monitoring terminal, for example.
  • FIG. 15A shows a configuration of an example of a battery connection tool including the voltage monitoring terminal.
  • the battery connection tool 150 includes a voltage monitoring terminal 158.
  • the voltage monitoring terminal 158 is connected to a connection terminal 153 that connects the positive electrode cap 131 and the negative electrode cap 132.
  • Other configurations are the same as those of the battery connecting tool 130 described above.
  • the battery connection tool 150 can be connected to two single cells as shown in FIG. 15B, for example, by the same method as the battery connection tool 130 described above. Further, the voltage monitoring terminal 158 can be connected to a voltage monitoring measuring instrument or a voltage data processing device (not shown). Thereby, the voltage applied between the positive electrode 143a of the single cell 141a and the negative electrode 142b of the single cell 141b can be monitored. The voltage monitoring is effective for preventing overcharging at the time of charging and overdischarging at the time of discharging of each unit cell constituting the assembled battery module, and keeping the voltage of each unit cell at the same level. By monitoring the voltage, it is possible to average the characteristics of the single cells constituting the assembled battery module so that a large load is not applied to some of the batteries. For this reason, while being able to stabilize and safety
  • the method for connecting the voltage monitoring terminal to the voltage monitoring measuring instrument or the voltage data processing device is not particularly limited.
  • the voltage monitoring terminal is connected to the voltage monitoring measuring instrument or the voltage data processing device (voltage It may be connected to the connection terminal of the monitoring circuit).
  • the voltage monitoring terminal has a structure suitable for caulking and connecting to the voltage monitoring measuring instrument or the connection terminal of the voltage data processing device. Or you may connect by soldering, resistance welding, arc welding, etc. If it does in this way, the voltage monitoring terminal and the voltage monitoring measuring instrument or the voltage data processing device can be connected easily and reliably.
  • connection terminal may be branched into a plurality of parts on the way, and the branched connection terminal may be connected to the electrode mounting portion.
  • FIG. 15C shows a configuration of an example of a battery connection tool including the branched connection terminal.
  • the battery connection tool 150c includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133a.
  • One end of the connection terminal 133a branches into two connection terminals 133b and 133c.
  • the connection terminals 133b and 133c are connected to the positive electrode cap 131.
  • the other end of the connection terminal 133a is connected to the negative electrode cap 132.
  • Other configurations are the same as those of the battery connecting tool 130 described above.
  • connection terminal 133a has two branched connection terminals 133b and 133c. Therefore, since it is connected to the positive electrode cap 131, the stress generated between the electrode and the connection terminal due to vibration or heat generated during charging and discharging is easily dispersed. Thereby, generation
  • connection terminal 133a one end side of the connection terminal 133a is branched into two, but the present invention is not limited to this example.
  • both ends of the connection terminal may be branched into a plurality.
  • the assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the first and second embodiments is used to connect two or more batteries.
  • FIG. 16 shows an example of the configuration of the assembled battery module of the present embodiment.
  • (a) is a plan view of the assembled battery module of the present embodiment
  • (b) is a plan view of the assembled battery module as viewed from the side opposite to (a).
  • the assembled battery module 160 includes five unit cells 161a, 161b, 161c, 161d and 161e, two battery connection tools 10a and 10b, and four battery connection tools 130a and 130b. , 130c and 130d.
  • Battery connection tools 10a and 10b are the battery connection tools shown in the first embodiment.
  • Battery connection tools 130a, 130b, 130c and 130d are the battery connection tools shown in the second embodiment. In order to make the drawing easy to see, in FIG.
  • each battery connection tool connected to the electrode visible on the side of FIG. 16B is not shown.
  • illustration is abbreviate
  • the five cells are arranged in a staggered manner.
  • the five cells are fixed by a frame (holder) not shown so as not to move.
  • the positive electrode 163a of the unit cell 161a and the negative electrode 162b of the unit cell 161b are connected in series by the battery connection tool 130a.
  • the positive electrode 163b of the unit cell 161b and the negative electrode 162c of the unit cell 161c are connected in series by the battery connection tool 130b.
  • the positive electrode 163c of the unit cell 161c and the negative electrode 162d of the unit cell 161d are connected in series by the battery connection tool 130c.
  • the positive electrode 163d of the unit cell 161d and the negative electrode 162e of the unit cell 161e are connected in series by the battery connection tool 130d.
  • the battery connection tool 10a is connected to the negative electrode 162a of the unit cell 161a corresponding to one end of the assembled battery module 160.
  • the battery connection tool 10b is connected to the positive electrode 163e of the unit cell 161e corresponding to the other end of the assembled battery module 160.
  • the method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example.
  • the negative electrode 162a of the unit cell 161a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13a of the battery connection tool 10a.
  • the positive electrode 163e of the unit cell 161e can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13b of the battery connection tool 10b.
  • the electrodes of the unit cells and the unit cell and the external terminal are excellent in vibration resistance, and generate heat during charging and discharging. It is possible to make an electrical connection very well without being affected by the above. As a result, in the assembled battery module of this embodiment, the reliability and stability of each electrical connection between the electrodes of the unit cells and between the unit cells and the external terminals are maintained.
  • the unit cell is not particularly limited, and examples thereof include a primary battery and a secondary battery.
  • a secondary battery is preferable.
  • the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery.
  • a lithium ion battery is particularly preferable.
  • this assembled battery module 170 includes six unit cells 171a, 171b, 171c, 171d, 171e and 171f, two battery connection tools 10c and 10d, and five battery connection tools 130e. , 130f, 130g, 130h and 130i.
  • Battery connection tools 10c and 10d are the battery connection tools shown in the first embodiment.
  • Battery connection tools 130e, 130f, 130g, 130h and 130i are the battery connection tools shown in the second embodiment.
  • the six single cells have three single cells arranged in a straight line, and two of these are arranged in parallel.
  • the six cells are fixed by a frame (holder) not shown so as not to float.
  • the positive electrode 173a of the unit cell 171a and the negative electrode 172b of the unit cell 171b are connected in series by the battery connection tool 130e.
  • the positive electrode 173b of the unit cell 171b and the negative electrode 172c of the unit cell 171c are connected in series by the battery connection tool 130f.
  • the positive electrode 173c of the unit cell 171c and the negative electrode 172d of the unit cell 171d are connected in series by the battery connection tool 130g.
  • the positive electrode 173d of the unit cell 171d and the negative electrode 172e of the unit cell 171e are connected in series by the battery connection tool 130h.
  • the positive electrode 173e of the single battery 171e and the negative electrode 172f of the single battery 171f are connected in series by the battery connection tool 130i.
  • the battery connection tool 10 c is connected to the negative electrode 172 a of the unit cell 171 a corresponding to one end of the assembled battery module 170.
  • the battery connection tool 10d is connected to the positive electrode 173f of the unit cell 171f which is the other end of the assembled battery module 170.
  • the method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example.
  • the negative electrode 172a of the unit cell 171a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13c of the battery connection tool 10c.
  • the positive electrode 173f of the unit cell 171f can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13d of the battery connection tool 10d.
  • the cap portions of the battery connection tool connected to the electrodes visible on the side of FIG. 17B are not shown.
  • each cap part of the battery connection tool connected to the electrode visible to the Fig.17 (a) side is abbreviate
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are positive electrode mounting portions. To do.
  • FIG. 18 shows an example of the configuration of the battery connection tool of the present embodiment.
  • 18A is a perspective view of the battery connection tool of this embodiment
  • FIG. 18B is a top view of the battery connection tool
  • FIG. 18C is a bottom view of the battery connection tool
  • FIG. It is sectional drawing seen in the U direction.
  • the battery connection tool 180 includes a positive electrode cap 181, a positive electrode cap 182, and a connection terminal 183 a.
  • the connection terminal 183 a is connected to the positive electrode cap 181 and the positive electrode cap 182.
  • the positive electrode cap 181 includes a circular plate 181a and three claws 181b.
  • the three claws 181b are provided at intervals on the edge of the plate 181a.
  • the positive electrode cap 182 includes a circular plate 182a and three claws 182b.
  • the three claws 182b are provided at intervals on the edge of the plate 182a.
  • an elongated slit 184a is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected.
  • an elongated slit 184b is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected.
  • FIG. 19C is a cross-sectional view in the VV direction of the connected state shown in FIG.
  • a battery connection tool 180 and two cylindrical unit cells 191a and 191b are prepared.
  • a jig or tool that can attract or hold the positive electrode caps 181 and 182 with a magnet
  • the center of the plate 181a and the center of the positive electrode 193a of one unit cell 191a are aligned.
  • the positive electrode cap 181 is positioned above the unit cell 191a.
  • the positive electrode cap 182 is positioned above the unit cell 191b so that the center of the plate 182a and the center of the cathode 193b of the other unit cell 191b are aligned. From this state, the positive electrode caps 181 and 182 are moved downward.
  • the positive electrode 193a of the cell 191a is fitted between the three claws 181b of the positive electrode cap 181 and the positive electrode cap 181 is placed over the positive electrode 193a of the cell 191a.
  • the plate 181a which is an electrode contact part is arrange
  • fixed part is arrange
  • the positive electrode 193b of the single cell 191b is fitted between the three claws 182b of the positive electrode cap 182, and the positive electrode cap 182 is placed over the positive electrode 193b of the single cell 191b.
  • the plate 182a which is an electrode contact part is arrange
  • fixed part is arrange
  • a desired position of the claw 181b is caulked in a line using a caulking jig (not shown) (caulking portion 194a in FIGS. 19B and 19C), A part of the claw 181b, which is a fixed part, is bitten into the side surface of the electrode (positive electrode 193a) of the unit cell 191a.
  • the positive electrode cap 181 is attached to the positive electrode 193a of the unit cell 191a.
  • the claw 181b which is the fixing portion, is arranged on the side surface of the electrode (positive electrode 193a) of the unit cell 191a, so that the battery connection tool of this embodiment is physically applied to the positive electrode of one cylindrical unit cell. Can be firmly connected.
  • the desired position of the claw 182b is caulked in a line (caulking portion 194b in FIGS. 19B and 19C), thereby fixing the fixing portion.
  • a part of the claw 182b is bitten into the side surface of the electrode (positive electrode 193b) of the unit cell 191b.
  • the positive electrode cap 182 is attached to the positive electrode 193b of the unit cell 191b.
  • the claw 182b which is a fixing portion, is arranged on the side surface of the electrode (positive electrode 193b) of the unit cell 191b, so that the battery connection tool of this embodiment is physically connected to the positive electrode of the other cylindrical unit cell.
  • the method for caulking the claws 181b and 182b is the same as the method shown in the first embodiment, for example.
  • the positive electrode cap 181 and the positive electrode 193a of the unit cell 191a are further weld-connected by resistance welding with the slit 184a interposed therebetween (welded portion 195a in FIG. 19C).
  • the positive electrode cap 182 and the positive electrode 193b of the unit cell 191b are welded and connected by resistance welding with the slit 184b interposed therebetween (welded portion 195b in FIG. 19C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment can be electrically connected to both positive electrodes in the two cylindrical unit cells, and can be physically firmly connected.
  • the positive electrode 193a of the single battery 191a and the positive electrode 193b of the single battery 191b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used for, for example, parallel connection of the positive electrodes of two unit cells in an assembled battery module.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are negative electrode mounting portions. To do.
  • FIG. 20 shows a configuration of an example of the battery connection tool of the present embodiment.
  • the battery connection tool 200 includes a negative electrode cap 201, a negative electrode cap 202, and a connection terminal 203a.
  • the connection terminal 203 a is connected to the negative electrode cap 201 and the negative electrode cap 202.
  • the negative electrode cap 201 includes a circular plate 201a and three claws 201b.
  • the three claws 201b are provided at the edge of the plate 201a with a space between each other.
  • the negative electrode cap 202 includes a circular plate 202a and three claws 202b.
  • the three claws 201b are provided at the edge of the plate 201a with a space between each other.
  • an elongated slit 204a is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected.
  • an elongated slit 204b is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected.
  • FIG. 21C is a cross-sectional view of the connection state shown in FIG. 21B viewed in the XX direction.
  • a battery connecting tool 200 and two cylindrical unit cells 211a and 211b are prepared.
  • a jig or tool that can attract or hold the negative electrode caps 201 and 202 with a magnet
  • the center of the plate 201a and the center of the negative electrode 212a of one unit cell 211a are aligned.
  • the negative electrode cap 201 is positioned above the unit cell 211a.
  • the negative electrode cap 202 is positioned above the unit cell 211b so that the center of the plate 202a and the center of the anode 212b of the other unit cell 211b are aligned. From this state, the negative electrode caps 201 and 202 are moved downward.
  • the negative electrode 212a of the unit cell 211a is inserted between the three claws 201b of the negative electrode cap 201, and the negative electrode cap 201 is placed over the negative electrode 212a of the unit cell 211a.
  • the plate 201a which is an electrode contact part is arrange
  • fixed part is arrange
  • the negative electrode 212b of the cell 211b is inserted between the three claws 202b of the negative electrode cap 202, and the negative electrode cap 202 is placed over the negative electrode 212b of the cell 211b.
  • the plate 202a which is an electrode contact part is arrange
  • fixed part is arrange
  • a desired position of the claw 201b is caulked in a line using a caulking jig (not shown) (caulking portion 214a in FIGS. 21 (b) and 21 (c)), A part of the claw 201b, which is a fixing portion, is bitten into the side surface of the battery body (negative electrode 212a) of the single battery 211a.
  • the negative electrode cap 201 is attached to the negative electrode 212a of the unit cell 211a.
  • the claw 201b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212a) of the unit cell 211a, so that the battery connection tool of this embodiment can be used as the negative electrode of one cylindrical unit cell.
  • the desired position of the claw 202b is caulked in a line (the caulking portion 214b in FIGS. 21B and 21C), thereby fixing the fixing portion.
  • a part of the claw 202b is bitten into the side surface of the battery body (negative electrode 212b) of the unit cell 211b. In this way, the negative electrode cap 202 is attached to the negative electrode 212b of the unit cell 211b.
  • the claw 202b which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212b) of the unit cell 211b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell. It can be physically and firmly connected.
  • the method of caulking the claws 201b and 202b is the same as the method shown in the first embodiment, for example.
  • the negative electrode cap 201 and the negative electrode 212a of the cell 211a are further welded and connected by resistance welding with the slit 204a interposed therebetween (welded portion 215a in FIG. 21C).
  • the negative electrode cap 202 and the negative electrode 212b of the unit cell 211b are welded and connected by resistance welding with the slit 204b interposed therebetween (welded portion 215b in FIG. 21C).
  • welding connection such as resistance welding is not necessarily performed.
  • the battery connection tool of this embodiment can be electrically connected to both negative electrodes in the two cylindrical unit cells, and can be physically firmly connected.
  • the negative electrode 212a of the unit cell 211a and the negative electrode 212b of the unit cell 211b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of the present embodiment can be suitably used, for example, for parallel connection of the negative electrodes of two unit cells in an assembled battery module.
  • the parallel connection of the negative electrodes of two cylindrical unit cells it is possible to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, in combination with the unit cell.
  • the reliability and stability of each electrical connection can be maintained.
  • the use of the battery connection tool of the present invention is not limited or limited by the above description.
  • the assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the second, fourth, and fifth embodiments is used to connect two or more unit cells.
  • FIG. 22 shows an exemplary configuration of the assembled battery module of the present embodiment.
  • 22A is a plan view of the assembled battery module of the present embodiment
  • FIG. 22B is a plan view of the assembled battery module as viewed from the opposite side to FIG.
  • the assembled battery module 220 includes two assembled battery modules 160a and 160b and battery connecting tools 180 and 200.
  • the two assembled battery modules 160a and 160b are the assembled battery modules shown in the third embodiment (FIG. 16), and are fixed so as not to float by a frame (holder) (not shown).
  • the battery connection tool 180 is the battery connection tool shown in the fourth embodiment (FIG. 18).
  • the battery connection tool 200 is the battery connection tool shown in the fifth embodiment (FIG. 20).
  • FIG. 22A the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22B is not shown.
  • FIG. 22B the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22A is not shown.
  • the negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both assembled battery modules are connected in parallel by the battery connecting tool 200 instead of the battery connecting tool 10a in the third embodiment.
  • the positive electrodes 163e-1 and 163e-2 in the unit cells 161e-1 and 161e-2 of both assembled battery modules are connected in parallel by a battery connecting tool 180 instead of the battery connecting tool 10b in the third embodiment.
  • a battery connecting tool 180 instead of the battery connecting tool 10b in the third embodiment.
  • the negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both battery modules can be connected to an externally added output terminal (external terminal) via the connection terminal of the battery connection tool 200, for example. It is.
  • the positive electrodes 163e-1 and 163e-2 of the unit cells 161e-1 and 161e-2 of both battery modules can be connected to an externally added input terminal (external terminal) via the connection terminal of the battery connection tool 180, for example. It is.
  • the assembled battery module of this embodiment is obtained by electrically connecting two assembled battery modules described in the above-described Embodiment 3 in parallel.
  • the battery connection tool of the present invention can prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and each electrical connection when configuring the assembled battery module Reliability and stability can be maintained. For this reason, the assembled battery module connected using the battery connection tool of the present invention maintains the reliability and stability of each electrical connection, for example. Therefore, the assembled battery module of the present invention can be used as, for example, an in-vehicle standby power supply, an in-vehicle photovoltaic power storage battery, or the like.
  • output performance with improved current collection efficiency is required, such as a drive power source for electric vehicles / hybrid vehicles, various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised.
  • a drive power source for electric vehicles / hybrid vehicles various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised.
  • its use is not limited and can be applied to a wide range of fields.

Abstract

Disclosed is a battery connecting tool that is capable of preventing the occurrence of connection failures between an electrode and a connection terminal as a result of heat generated during vibration or charging and discharging, and in which the stability and reliability of electrical connections are maintained during the formation of battery pack modules. Also disclosed is a battery pack module using the same. The battery connecting tool (10) includes an electrode mounting section (11) and a connection terminal (13), and is characterized in that the aforementioned connection terminal (13) is connected to the aforementioned electrode mounting section (11), and in that the aforementioned electrode mounting section (11) includes an electrode contact section (11a) disposed upon the top surface of the electrode and fixing sections (11b) that are disposed upon the sides of the electrode or upon the sides of the main battery body.

Description

電池接続用具およびそれを用いた組電池モジュールBattery connection tool and assembled battery module using the same
 本発明は、電池接続用具およびそれを用いた組電池モジュールに関する。より詳細には、例えば、二次電池等の電極と接続端子との電気的接続に対する信頼性を向上可能な電池接続用具およびそれを用いた組電池モジュールに関する。 The present invention relates to a battery connection tool and an assembled battery module using the battery connection tool. More specifically, for example, the present invention relates to a battery connection tool capable of improving the reliability of electrical connection between an electrode such as a secondary battery and a connection terminal, and an assembled battery module using the battery connection tool.
 化石燃料の枯渇に対する懸念や二酸化炭素等の温室効果ガスの排出増加に伴う地球温暖化等の環境問題への対策の1つとして、充放電可能な二次電池を日常生活のあらゆる場面に、利用・応用しようとする機運が高まっている。二次電池の中でも、特にリチウムイオン電池は、他の二次電池(例えば、ニッケルカドミウム蓄電池、ニッケル水素電池等)などと比較して、充放電特性に優れ、軽量であり、かつ環境および人体に悪影響を及ぼすと言われる物質を含有しない。このため、リチウムイオン電池は特に技術開発が進められており、優れた製品が市場に流通している。 Use of rechargeable batteries in every aspect of daily life as a measure against concerns about fossil fuel depletion and environmental issues such as global warming caused by increased emissions of greenhouse gases such as carbon dioxide・ Motivation to apply is increasing. Among secondary batteries, lithium ion batteries, in particular, are superior in charge / discharge characteristics, lightweight, and environmental and human compared to other secondary batteries (eg, nickel cadmium storage battery, nickel hydrogen battery). Does not contain substances that are said to have adverse effects. For this reason, the technological development of lithium ion batteries is particularly advanced, and excellent products are distributed in the market.
 リチウムイオン電池には、例えば、ボタン型、円筒型、楕円柱型、四角柱型等の種々の形態のものがある。円筒型リチウムイオン電池は、例えば、18650型、26650型などが開発されている。従来から、18650型等のリチウムイオン電池は、これを組み合わせた組電池モジュールの形態で、例えば、ノート型パーソナルコンピュータ、パワーツール、電動アシスト自転車等の電源として汎用されている。 There are various types of lithium ion batteries such as a button type, a cylindrical type, an elliptical column type, and a rectangular column type. Cylindrical lithium ion batteries, for example, 18650 type and 26650 type have been developed. Conventionally, a lithium ion battery such as a 18650 type is in the form of an assembled battery module in which the lithium ion batteries are combined, and is widely used as a power source for, for example, a notebook personal computer, a power tool, and an electrically assisted bicycle.
 一方で、前述の18650型等のリチウムイオン電池の特性および汎用性を活かして、より多数のリチウムイオン電池を接続することにより、高電圧、高出力の組電池モジュールの作製が検討されている。 On the other hand, taking advantage of the characteristics and versatility of the lithium ion battery such as the 18650 type described above, production of a high voltage, high output assembled battery module is being considered by connecting a larger number of lithium ion batteries.
 従来から、例えば、二次電池等の電極間の接続には、その接続強度を高めるために、ハンダ付けによる接続以外に、例えば、抵抗溶接、レーザー溶接等が採用されている。これらの溶接では、電極とリード金属板(接続端子)とを抵抗溶接(スポット溶接)する(例えば、特許文献1参照)。このスポット溶接では、歩留まりを高めるために、同一の電極において、複数箇所に溶接を行う(いわゆる、多点溶接)ことが一般的である。また、溶接が不十分となることを防ぐために、例えば、1つの電極に対して多点溶接を行った接続端子において、各溶接部分の間に切り欠きを設けるのが一般的である。 Conventionally, for example, resistance welding, laser welding, or the like has been adopted for connection between electrodes of a secondary battery or the like in addition to soldering connection in order to increase the connection strength. In these weldings, resistance welding (spot welding) is performed between the electrode and the lead metal plate (connection terminal) (see, for example, Patent Document 1). In this spot welding, in order to increase the yield, it is common to perform welding at a plurality of locations on the same electrode (so-called multi-point welding). Further, in order to prevent welding from becoming insufficient, for example, in a connection terminal in which multi-point welding is performed on one electrode, it is common to provide a notch between each welded portion.
特開2007-66537号公報JP 2007-66537 A
 しかしながら、上記のようなスポット溶接には、いくつかの問題が指摘されている。 However, several problems have been pointed out in spot welding as described above.
 すなわち、前述の18650型等のリチウムイオン電池のような二次電池を組み合わせて、より高電圧、高出力な組電池モジュールを作製しようとすると、多点溶接の場合には、一層多くの溶接が必要である。このため、溶接による各接続の信頼性および安定性が保持されなければならないという問題がある。近年では、このような組電池モジュールを、例えば、電気自動車・ハイブリッド型自動車、各種電装設備等の駆動電源(自動車用電源)、UPS(非常用電源)等に利用しようとする動きが起きている。このような用途では、集電効率を高めて出力性能を維持するために、リチウムイオン電池の電極間等の電気的接続に、耐振性などの要求が付加されることとなった。このような要求は、従来用途では重視されなかったものである。しかし、前述のスポット溶接では、電極と接続端子との溶接箇所が点で行われるため、振動による応力集中や金属疲労による接続不良も起こりやすい。 That is, when a secondary battery such as the above-mentioned 18650 type lithium ion battery is combined to produce an assembled battery module with higher voltage and higher output, in the case of multi-point welding, more welding is performed. is necessary. For this reason, there exists a problem that the reliability and stability of each connection by welding must be maintained. In recent years, there has been a movement to use such an assembled battery module for, for example, a drive power source (automotive power source), UPS (emergency power source), etc. for electric vehicles / hybrid vehicles, various electrical equipment, and the like. . In such applications, in order to increase the current collection efficiency and maintain the output performance, demands such as vibration resistance are added to the electrical connection between the electrodes of the lithium ion battery. Such a requirement has not been emphasized in conventional applications. However, in the spot welding described above, since the welded portion between the electrode and the connection terminal is performed at a point, stress concentration due to vibration and connection failure due to metal fatigue are likely to occur.
 さらに、前述の振動に加えて、二次電池が充放電時に発する熱によって、接続端子が熱膨張と熱収縮とを繰返す。そのため、電極との接続部分へのストレスが一層高くなる。多くの二次電池を組み合わせた組電池モジュールであると、接続部分が多くなるので、電極と接続端子との間に強固かつより確実な電気的接続が求められる。 Furthermore, in addition to the vibration described above, the connection terminal repeats thermal expansion and contraction due to heat generated by the secondary battery during charging and discharging. Therefore, the stress on the connection portion with the electrode is further increased. In the assembled battery module in which many secondary batteries are combined, the number of connection portions increases, and thus a strong and more reliable electrical connection is required between the electrode and the connection terminal.
 本発明は、上記問題の解決を課題とするものである。その目的は、振動または充放電時に発する熱による電極と接続端子との間での接続不良の発生を防止することができ、組電池モジュールを構成するに際して、各電気的接続の信頼性および安定性が保持される電池接続用具およびそれを用いた組電池モジュールを提供することにある。 The present invention aims to solve the above problems. The purpose is to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and reliability and stability of each electrical connection when configuring an assembled battery module It is an object of the present invention to provide a battery connecting tool that holds the battery and an assembled battery module using the same.
 前記目的を達成するために、本発明の電池接続用具は、
電極取付部および接続端子を含み、
前記接続端子が、前記電極取付部に接続され、
前記電極取付部が、電極の上面上に配置される電極接触部と、電極の側面上または電池本体の側面上に配置される固定部とを含む、
ことを特徴とする。
In order to achieve the above object, the battery connection tool of the present invention comprises:
Including electrode mounting part and connection terminal,
The connection terminal is connected to the electrode mounting portion;
The electrode mounting portion includes an electrode contact portion disposed on the upper surface of the electrode and a fixing portion disposed on the side surface of the electrode or the side surface of the battery body.
It is characterized by that.
 また、本発明の組電池モジュールは、
二つ以上の電池を接続した組電池モジュールであって、前記二つ以上の電池の接続に、前記本発明の電池接続用具を用いたことを特徴とする。
The assembled battery module of the present invention is
An assembled battery module in which two or more batteries are connected, wherein the battery connection tool of the present invention is used to connect the two or more batteries.
 本発明の電池接続用具によれば、例えば、二次電池等の電極と接続端子との間を、抵抗溶接等の溶接による接続をすることなく、耐振性に優れ、充放電時の発熱にも左右されない状態で極めて良好な電気的接続を行うことができる。 According to the battery connection tool of the present invention, for example, it is excellent in vibration resistance without being connected by welding such as resistance welding between an electrode such as a secondary battery and a connection terminal, and also generates heat during charging and discharging. An extremely good electrical connection can be made without being influenced.
(a)は、本発明の電池接続用具の実施形態1における一例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のA-A方向に見た断面図である。(A) is a perspective view which shows the structure of an example in Embodiment 1 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the AA direction of a connection tool. (a)は、前記一例の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のB-B方向に見た断面図、(d)は前記一例の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のC-C方向に見た断面図、(g)は、前記一例の単電池の負極への接続状態の別の例を示す斜視図である。(A) is a perspective view for explaining connection of the unit cell of the example to the negative electrode, (b) is a perspective view showing the connection state, and (c) is a BB direction of the connection state shown in (b). Cross-sectional view, (d) is a perspective view for explaining connection of the unit cell of the example to the positive electrode, (e) is a perspective view showing the connection state, and (f) is a C state of the connection state shown in (e). Sectional view seen in the -C direction, (g) is a perspective view showing another example of the connection state of the unit cell of the example to the negative electrode. (a)は、実施形態1におけるその他の例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のD-D方向に見た断面図である。(A) is a perspective view showing the configuration of another example in Embodiment 1, (b) is a top view, (c) is a bottom view, and (d) is a D-- of the battery connection tool shown in (a). It is sectional drawing seen in the D direction. (a)は、前記その他の例の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のE-E方向に見た断面図、(d)は前記その他の例の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のF-F方向に見た断面図である。(A) is a perspective view for explaining the connection of the unit cells of the other examples to the negative electrode, (b) is a perspective view showing the connection state, and (c) is an EE in the connection state shown in (b). (D) is a perspective view for explaining the connection of the unit cell of the other example to the positive electrode, (e) is a perspective view showing the connection state, and (f) is shown in (e). It is sectional drawing seen in the FF direction of the connection state. (a)は、実施形態1におけるさらにその他の例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のG-G方向に見た断面図である。(A) is a perspective view which shows the structure of the further another example in Embodiment 1, (b) is the same top view, (c) is the same bottom view, (d) is G of the battery connection tool shown in (a). It is sectional drawing seen in-G direction. (a)は、前記図5で示した電池接続用具の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のH-H方向に見た断面図、(d)は前記図5で示した電池接続用具の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のI-I方向に見た断面図である。(A) is a perspective view explaining the connection of the battery connection tool shown in FIG. 5 to the negative electrode of the unit cell, (b) is a perspective view showing the connection state, and (c) is a connection shown in (b). FIG. 5D is a cross-sectional view of the state viewed in the HH direction, FIG. 5D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 5 to the positive electrode of the unit cell, and FIG. (F), It is sectional drawing seen in the II direction of the connection state shown to (e). (a)は、実施形態1におけるさらにその他の例の構成を示す斜視図、(b)は同上面図、(c)は同下面図である。(d)は(a)に示す電池接続用具のJ-J方向に見た断面図、(e)は実施形態1におけるさらにその他の例の構成を示す下面図である。(A) is a perspective view which shows the structure of the further another example in Embodiment 1, (b) is the same top view, (c) is the same bottom view. (D) is a cross-sectional view of the battery connection tool shown in (a) as viewed in the JJ direction, and (e) is a bottom view showing the configuration of still another example in the first embodiment. (a)は、前記図7で示した電池接続用具の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のK-K方向に見た断面図、(d)は前記図7で示した電池接続用具の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のL-L方向に見た断面図である。(A) is a perspective view for explaining the connection of the battery connection tool shown in FIG. 7 to the negative electrode of the unit cell, (b) is a perspective view showing the connection state, and (c) is a connection shown in (b). FIG. 7D is a cross-sectional view in the KK direction of the state, FIG. 7D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 7 to the positive electrode of the unit cell, and FIG. (F) is a cross-sectional view of the connection state shown in (e) as viewed in the LL direction. (a)は、実施形態1におけるさらにその他の例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のM-M方向に見た断面図である。(A) is the perspective view which shows the structure of the further another example in Embodiment 1, (b) is the top view, (c) is the bottom view, (d) is M of the battery connection tool shown to (a). FIG. (a)は、針状突起の一例の作成方法と構成を示す図である。(b)は、針状突起のその他の例の構成を示す図である。(c)は、針状突起のさらにその他の例の構成を示す図である。(A) is a figure which shows the preparation method and structure of an example of a needle-like protrusion. (B) is a figure which shows the structure of the other example of a needle-like protrusion. (C) is a figure which shows the structure of the further another example of a acicular protrusion. (a)は、前記図9Aで示した電池接続用具の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のN-N方向に見た断面図、(d)は前記図9Aで示した電池接続用具の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のO-O方向に見た断面図である。(A) is a perspective view explaining the connection to the negative electrode of the cell of the battery connection tool shown in FIG. 9A, (b) is a perspective view showing the connection state, and (c) is the connection shown in (b). FIG. 9D is a perspective view illustrating connection of the battery connection tool shown in FIG. 9A to the positive electrode of the unit cell, and FIG. 9E is a perspective view illustrating the connection state. (F) is a cross-sectional view of the connection state shown in (e) as viewed in the OO direction. (a)は、実施形態1におけるさらにその他の例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のP-P方向に見た断面図である。(A) is the perspective view which shows the structure of the further another example in Embodiment 1, (b) is the same top view, (c) is the same bottom view, (d) is P of the battery connection tool shown in (a). It is a sectional view seen in the -P direction. (a)は、前記図11で示した電池接続用具の単電池の負極への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のQ-Q方向に見た断面図、(d)は前記図11で示した電池接続用具の単電池の正極への接続を説明する斜視図、(e)は同接続状態を示す斜視図、(f)は(e)に示す接続状態のR-R方向に見た断面図である。(A) is a perspective view for explaining the connection of the battery connection tool shown in FIG. 11 to the negative electrode of the unit cell, (b) is a perspective view showing the connection state, and (c) is a connection shown in (b). FIG. 11D is a cross-sectional view in the QQ direction of the state, FIG. 11D is a perspective view for explaining the connection of the battery connection tool shown in FIG. 11 to the positive electrode of the unit cell, and FIG. (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e). (a)は、本発明の電池接続用具の実施形態2における一例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のS-S方向に見た断面図である。(A) is a perspective view which shows the structure of an example in Embodiment 2 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in SS direction of a connection tool. (a)は、前記一例の単電池への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のT-T方向に見た断面図である。(A) is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is seen in the TT direction of the connection state shown in (b). It is sectional drawing. (a)は、実施形態2におけるその他の例の構成を示す斜視図、(b)は前記その他の例の単電池への接続状態を説明する斜視図である。(c)は実施形態2におけるさらにその他の例の構成を示す斜視図である。(A) is a perspective view which shows the structure of the other example in Embodiment 2, (b) is a perspective view explaining the connection state to the cell of the said other example. (C) is a perspective view which shows the structure of the further another example in Embodiment 2. FIG. (a)は、本発明の組電池モジュールの実施形態3における一例の構成を示す平面図、(b)は同組電池モジュールを(a)とは反対側から見た平面図である。(A) is a top view which shows the structure of an example in Embodiment 3 of the assembled battery module of this invention, (b) is the top view which looked at the assembled battery module from the opposite side to (a). (a)は、実施形態3におけるその他の例の構成を示す平面図、(b)は同組電池モジュールを(a)とは反対側から見た平面図である。(A) is a top view which shows the structure of the other example in Embodiment 3, (b) is the top view which looked at the same assembled battery module from the opposite side to (a). (a)は、本発明の電池接続用具の実施形態4における一例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のU-U方向に見た断面図である。(A) is a perspective view which shows the structure of an example in Embodiment 4 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the U direction of the connection tool. (a)は、前記一例の単電池への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のV-V方向に見た断面図である。(A) is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is seen in the VV direction of the connection state shown in (b). It is sectional drawing. (a)は、本発明の電池接続用具の実施形態5における一例の構成を示す斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のW-W方向に見た断面図である。(A) is a perspective view which shows the structure of an example in Embodiment 5 of the battery connection tool of this invention, (b) is the same top view, (c) is the same bottom view, (d) is the battery shown in (a). It is sectional drawing seen in the WW direction of the connection tool. (a)は、前記一例の単電池への接続を説明する斜視図、(b)は同接続状態を示す斜視図、(c)は(b)に示す接続状態のX-X方向に見た断面図である。(A) is a perspective view for explaining connection to the unit cell of the example, (b) is a perspective view showing the connection state, and (c) is viewed in the XX direction of the connection state shown in (b). It is sectional drawing. (a)は、本発明の組電池モジュールの実施形態6における一例の構成を示す平面図、(b)は同組電池モジュールを(a)とは反対側から見た平面図である。(A) is a top view which shows the structure of an example in Embodiment 6 of the assembled battery module of this invention, (b) is the top view which looked at the assembled battery module from the opposite side to (a).
 本発明において、前記「固定部」における前記「電極の側面」とは、単電池における正極側の端面付近の側面を示す。そして、前記「固定部」における前記「電池本体の側面」とは、単電池における負極側の端面付近の側面を示す。 In the present invention, the “side surface of the electrode” in the “fixed portion” indicates a side surface near the end surface on the positive electrode side in the unit cell. The “side surface of the battery body” in the “fixing portion” indicates a side surface near the end surface on the negative electrode side in the unit cell.
 本発明の電池接続用具は、例えば、前記電極接触部の縁部に、少なくとも二つの前記固定部が、相互に間隔をおいて設けられている形態であってもよいし、前記固定部が環状であって、前記電極接触部の縁部に、前記環状の固定部が設けられている形態であってもよい。 The battery connection tool of the present invention may have, for example, a form in which at least two of the fixing portions are provided at intervals on the edge of the electrode contact portion, and the fixing portion is annular. And the form by which the said cyclic | annular fixing | fixed part is provided in the edge part of the said electrode contact part may be sufficient.
 本発明の電池接続用具において、前記固定部の少なくとも一部が、電極の側面または電池本体の側面に食い込み可能であることが好ましい。 In the battery connection tool of the present invention, it is preferable that at least a part of the fixing portion can bite into the side surface of the electrode or the side surface of the battery body.
 本発明の電池接続用具において、前記電極接触部が板状であり、前記電極接触部が、電極側に向かって凸状に湾曲していることが好ましい。 In the battery connection tool of the present invention, it is preferable that the electrode contact portion is plate-shaped and the electrode contact portion is curved in a convex shape toward the electrode side.
 本発明の電池接続用具において、前記電極接触部の電極接触面に突起が形成されていることが好ましい。 In the battery connection tool of the present invention, it is preferable that a protrusion is formed on the electrode contact surface of the electrode contact portion.
 本発明の電池接続用具において、前記電極接触部の電極接触面に、導電性樹脂層が形成されていることが好ましい。 In the battery connection tool of the present invention, it is preferable that a conductive resin layer is formed on the electrode contact surface of the electrode contact portion.
 本発明の電池接続用具は、さらに、電圧監視端子を含み、前記電圧監視端子が、前記接続端子に接続されていることが好ましい。 It is preferable that the battery connection tool of the present invention further includes a voltage monitoring terminal, and the voltage monitoring terminal is connected to the connection terminal.
 本発明の電池接続用具は、二次電池接続用であることが好ましい。 The battery connection tool of the present invention is preferably for secondary battery connection.
 本発明の電池接続用具は、例えば、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されている形態であってもよい。具体的には、例えば、本発明の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、一方の前記電極取付部が単電池の正極に取り付け可能な電極取付部(正極用取付部)であり、他方の前記電極取付部が単電池の負極に取り付け可能な電極取付部(負極用取付部)である形態であってもよい。また、例えば、本発明の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両方の電極取付部が単電池の正極に取り付け可能な電極取付部(正極用取付部)である形態であってもよい。また、例えば、本発明の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両方の電極取付部が単電池の負極に取り付け可能な電極取付部(負極用取付部)である形態であってもよい。 The battery connection tool of the present invention may include, for example, two electrode mounting portions, and the two electrode mounting portions are connected by the connection terminals. Specifically, for example, the battery connection tool of the present invention includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and one of the electrode mounting portions is a single cell. It may be an electrode mounting portion (positive electrode mounting portion) that can be mounted on the positive electrode, and the other electrode mounting portion may be an electrode mounting portion (negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell. Further, for example, the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminals, and both the electrode attachment portions are attached to the positive electrode of the unit cell. The form which is a possible electrode attachment part (attachment part for positive electrodes) may be sufficient. Further, for example, the battery connection tool of the present invention includes the two electrode attachment portions, the two electrode attachment portions are connected by the connection terminal, and both the electrode attachment portions are attached to the negative electrode of the unit cell. The form which is a possible electrode attachment part (attachment part for negative electrodes) may be sufficient.
 本発明の電池接続用具は、前記電極取付部が一つであり、前記接続端子が、外部端子との接続用の接続端子である形態であってもよい。具体的には、例えば、本発明の電池接続用具は、前記電極取付部が単電池の正極に取り付け可能な電極取付部(正極用取付部)である形態であってもよい。また、例えば、本発明の電池接続用具は、前記電極取付部が単電池の負極に取り付け可能な電極取付部(負極用取付部)である形態であってもよい。 The battery connection tool of the present invention may have a configuration in which the number of the electrode attachment portions is one and the connection terminal is a connection terminal for connection to an external terminal. Specifically, for example, the battery connection tool of the present invention may have a configuration in which the electrode attachment portion is an electrode attachment portion (a positive electrode attachment portion) that can be attached to the positive electrode of the unit cell. Further, for example, the battery connection tool of the present invention may be configured such that the electrode mounting portion is an electrode mounting portion (a negative electrode mounting portion) that can be mounted on the negative electrode of the unit cell.
 本発明の組電池モジュールにおいて、少なくとも一つの電池の電極が外部端子に接続可能であり、前記外部端子との接続に、前記本発明の電池接続用具を用いたことが好ましい。 In the assembled battery module of the present invention, it is preferable that at least one battery electrode is connectable to an external terminal, and the battery connection tool of the present invention is used for connection to the external terminal.
 本発明の組電池モジュールにおいて、前記電池が二次電池であることが好ましい。 In the assembled battery module of the present invention, the battery is preferably a secondary battery.
 以下、本発明の電池接続用具および組電池モジュールについて、図を参照して説明する。ただし、本発明は、以下の実施形態に限定されない。なお、以下の図1から図22において、同一部分には同一符号を付している。 Hereinafter, the battery connection tool and the assembled battery module of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments. In the following FIGS. 1 to 22, the same reference numerals are given to the same portions.
〔実施形態1〕
 図1に、本実施形態の電池接続用具の一例の構成を示す。図1において、(a)は本実施形態の電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のA-A方向に見た断面図である。図1に示すとおり、この電池接続用具10は、導電性のキャップ11と、導電性の接続端子13とを含む。接続端子13は、キャップ11に接続されている。キャップ11は、円形のプレート11aと、3本の爪11bとを含む。3本の爪11bは、プレート11aの縁部に、相互に間隔をおいて設けられている。本実施形態での前記「キャップ」は、本発明における「電極取付部」に相当する。本実施形態での前記「プレート」は、本発明における「電極接触部」に相当する。本実施形態での前記「爪」は、本発明における「固定部」に相当する。後述する実施形態2~6においても同様である。
Embodiment 1
In FIG. 1, the structure of an example of the battery connection tool of this embodiment is shown. 1A is a perspective view of the battery connection tool of the present embodiment, FIG. 1B is a top view of the battery connection tool, FIG. 1C is a bottom view of the battery connection tool, and FIG. It is sectional drawing seen in A direction. As shown in FIG. 1, the battery connection tool 10 includes a conductive cap 11 and a conductive connection terminal 13. The connection terminal 13 is connected to the cap 11. The cap 11 includes a circular plate 11a and three claws 11b. The three claws 11b are provided at intervals on the edge of the plate 11a. The “cap” in the present embodiment corresponds to an “electrode mounting portion” in the present invention. The “plate” in the present embodiment corresponds to an “electrode contact portion” in the present invention. The “nail” in the present embodiment corresponds to a “fixing portion” in the present invention. The same applies to Embodiments 2 to 6 described later.
 つぎに、図2を参照して、本実施形態の電池接続用具の単電池の電極への接続を説明する。図2において、(a)~(c)は、本実施形態の電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のB-B方向に見た断面図である。(d)~(f)は、本実施形態の電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のC-C方向に見た断面図である。 Next, with reference to FIG. 2, the connection of the battery connection tool of this embodiment to the electrode of the unit cell will be described. In FIG. 2, (a) to (c) show the connection of the battery connection tool of this embodiment to the negative electrode of the unit cell. (C) is a cross-sectional view of the connection state shown in (b) as seen in the BB direction. (D) to (f) show the connection of the battery connection tool of the present embodiment to the positive electrode of the unit cell. (F) is a cross-sectional view seen in the CC direction of the connected state shown in (e).
 まず、本実施形態の電池接続用具の単電池の負極への接続を説明する。本実施形態の電池接続用具を単電池の負極に接続する場合には、前記キャップを、例えば、負極にかぶせられる大きさのキャップとする。図2(a)に示すように、電池接続用具10と、円筒形の単電池21とを準備する。つぎに、キャップ11を吸引または磁石で保持できる治具または工具(図示せず)を用いて、プレート11aの中心と負極22の中心とが合わさるように、キャップ11を単電池21の上方に位置させる。この状態から、キャップ11を下方に移動させることにより、3本の爪11bの間に負極22を嵌入して、キャップ11を単電池21の負極22にかぶせる。なお、前記キャップの径が単電池の電池本体の径より若干小さい場合には、例えば、押圧を加えながら、前記キャップを単電池の負極にかぶせればよい。このようにして、電極接触部であるプレート11aが電極(負極22)の上面上に配置されることで、本実施形態の電池接続用具を円筒形の単電池の負極に電気的に接続することができる。また、固定部である爪11bが電池本体(負極22)の側面上に配置されることで、本実施形態の電池接続用具を円筒形の単電池の負極に物理的に接続することができる。 First, the connection of the battery connection tool of this embodiment to the negative electrode of the unit cell will be described. When the battery connection tool of the present embodiment is connected to the negative electrode of the unit cell, the cap is, for example, a cap having a size that can be put on the negative electrode. As shown to Fig.2 (a), the battery connection tool 10 and the cylindrical cell 21 are prepared. Next, the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the negative electrode 22 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet. Let From this state, by moving the cap 11 downward, the negative electrode 22 is inserted between the three claws 11b, and the cap 11 is placed on the negative electrode 22 of the unit cell 21. When the diameter of the cap is slightly smaller than the diameter of the battery body of the unit cell, for example, the cap may be covered with the negative electrode of the unit cell while applying pressure. Thus, the plate 11a which is an electrode contact part is arrange | positioned on the upper surface of an electrode (negative electrode 22), and the battery connection tool of this embodiment is electrically connected to the negative electrode of a cylindrical unit cell. Can do. Moreover, the nail | claw 11b which is a fixing | fixed part is arrange | positioned on the side surface of a battery main body (negative electrode 22), and the battery connection tool of this embodiment can be physically connected to the negative electrode of a cylindrical cell.
 つぎに、本実施形態の電池接続用具の単電池の正極への接続を説明する。本実施形態の電池接続用具を単電池の正極に接続する場合には、前記キャップを、例えば、単電池の端部から突出した正極にかぶせられる大きさのキャップとする。図2(d)に示すように、電池接続用具10と、円筒形の単電池21とを準備する。つぎに、キャップ11を吸引または磁石で保持できる治具または工具(図示せず)を用いて、プレート11aの中心と正極23の中心とが合わさるように、キャップ11を単電池21の上方に位置させる。この状態から、キャップ11を下方に移動させることにより、3本の爪11bの間に正極23を嵌入して、キャップ11を単電池21の正極23にかぶせる。なお、前記キャップの径が単電池の正極の径より若干小さい場合には、例えば、押圧を加えながら、前記キャップを単電池の正極にかぶせればよい。このようにして、電極接触部であるプレート11aが電極(正極23)の上面上に配置されることで、本実施形態の電池接続用具を円筒形の単電池の正極に電気的に接続することができる。また、固定部である爪11bが電極(正極23)の側面上に配置されることで、本実施形態の電池接続用具を円筒形の単電池の正極に物理的に接続することができる。 Next, connection of the battery connection tool of this embodiment to the positive electrode of the unit cell will be described. When the battery connection tool of the present embodiment is connected to the positive electrode of the unit cell, the cap is, for example, a cap having a size that can be put on the positive electrode protruding from the end of the unit cell. As shown in FIG.2 (d), the battery connection tool 10 and the cylindrical cell 21 are prepared. Next, the cap 11 is positioned above the unit cell 21 so that the center of the plate 11a and the center of the positive electrode 23 are aligned using a jig or tool (not shown) that can attract or hold the cap 11 with a magnet. Let From this state, by moving the cap 11 downward, the positive electrode 23 is inserted between the three claws 11 b and the cap 11 is placed on the positive electrode 23 of the unit cell 21. In addition, what is necessary is just to cover the said cap on the positive electrode of a single cell, for example, applying a press, when the diameter of the said cap is a little smaller than the diameter of the positive electrode of a single cell. Thus, the plate 11a which is an electrode contact part is arrange | positioned on the upper surface of an electrode (positive electrode 23), and the battery connection tool of this embodiment is electrically connected to the positive electrode of a cylindrical unit cell. Can do. Moreover, the nail | claw 11b which is a fixing | fixed part is arrange | positioned on the side surface of an electrode (positive electrode 23), and the battery connection tool of this embodiment can be physically connected to the positive electrode of a cylindrical unit cell.
 前述のとおり、電極接触部であるプレートを用いて、本実施形態の電池接続用具を円筒形の単電池の電極に電気的に接続することができ、かつ、固定部である爪を用いて、本実施形態の電池接続用具を円筒形の単電池の電極に物理的に接続することができる。このため、例えば、単電池の電極への接続に抵抗溶接等の溶接を用いた場合にみられる、振動等による応力集中や金属疲労による電極と接続端子との間での破断の問題を抑制することができる。この結果、本実施形態の電池接続用具では、振動または充放電時に発する熱による電極と接続端子との間の接続不良の発生を防ぐことができ、単電池と組み合わせて組電池モジュールを構成するのに際して、各電気的接続の信頼性および安定性を保持することができる。 As described above, using the plate that is the electrode contact portion, the battery connection tool of this embodiment can be electrically connected to the electrode of the cylindrical unit cell, and using the claw that is the fixing portion, The battery connection tool of this embodiment can be physically connected to the electrode of a cylindrical unit cell. For this reason, for example, when welding such as resistance welding is used to connect the cell to the electrode, the problem of stress concentration due to vibration or breakage between the electrode and the connection terminal due to metal fatigue is suppressed. be able to. As a result, in the battery connection tool of this embodiment, it is possible to prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and the assembled battery module is configured in combination with the single cell. At this time, the reliability and stability of each electrical connection can be maintained.
 また、本実施形態の電池接続用具では、円筒形の単電池の電極への電気的、物理的接続に、例えば、抵抗溶接等の溶接による接続をしなくても、良好な接続が可能であるため、以下のような優れた効果が得られる。すなわち、まず、溶接によって接続する際に発生し得る接続のバラツキがない。この結果、接続の信頼性が高く、接続品質が安定している。また、溶接する際に生じる熱によるストレスが各単電池にかからない。この結果、熱ストレスによる各単電池の寿命の低下を回避することができる。また、溶接という厳しい条件が単電池等に付加されることがないため、例えば、抵抗溶接の場合に用いる溶接棒の消耗による、溶接接続の品質に影響されない。また、溶接による接続を行わないため、電極表面での錆の発生を抑制することができる。また、使用後の組電池モジュールを安全に解体できるため、資源リサイクルにかかるコストを抑えることができる。また、抵抗溶接、レーザー溶接等の特殊な溶接設備を必要としない。この結果、低コストに組電池モジュールを製造可能である。 Further, in the battery connection tool of the present embodiment, good connection is possible without electrical or physical connection to the electrode of the cylindrical unit cell, for example, by welding such as resistance welding. Therefore, the following excellent effects can be obtained. That is, first, there is no connection variation that may occur when connecting by welding. As a result, the connection reliability is high and the connection quality is stable. Moreover, the stress by the heat which arises when welding is not applied to each cell. As a result, it is possible to avoid a decrease in the life of each unit cell due to thermal stress. Moreover, since the severe condition of welding is not added to a single battery etc., it is not influenced by the quality of the welding connection by the wear of the welding rod used in the case of resistance welding, for example. Moreover, since the connection by welding is not performed, the generation of rust on the electrode surface can be suppressed. Moreover, since the assembled battery module after use can be safely disassembled, the cost for resource recycling can be suppressed. Moreover, special welding equipment such as resistance welding and laser welding is not required. As a result, the assembled battery module can be manufactured at low cost.
 さらに、本発明では、前記爪をかしめて、前記爪の一部を電極の側面または電池本体の側面に食い込ませてもよい。例えば、前述のように、キャップ11を単電池21の負極22にかぶせた状態で、かしめ用の治具(図示せず)を用いて、図2(b)および図2(c)に示すように、爪11bの所望の位置をライン状にかしめることにより(かしめ部24)、固定部である爪11bの一部を電池本体(負極22)の側面に食い込ませる。このようにすることで、キャップ11を単電池21の負極22に冠着することができる。この結果、本実施形態の電池接続用具を、円筒形の単電池の負極に物理的に強固に接続することができる。 Furthermore, in the present invention, the claw may be caulked and a part of the claw may be bitten into the side surface of the electrode or the side surface of the battery body. For example, as described above, as shown in FIG. 2B and FIG. 2C, using the caulking jig (not shown) with the cap 11 placed on the negative electrode 22 of the unit cell 21. In addition, a desired position of the claw 11b is caulked in a line shape (caulking portion 24), so that a part of the claw 11b as a fixing portion is bitten into the side surface of the battery body (negative electrode 22). In this way, the cap 11 can be attached to the negative electrode 22 of the unit cell 21. As a result, the battery connection tool of the present embodiment can be physically and firmly connected to the negative electrode of the cylindrical unit cell.
 また、例えば、前述のように、キャップ11を単電池21の正極23にかぶせた状態で、かしめ用の治具(図示せず)を用いて、図2(e)および図2(f)に示すように、爪11bの所望の位置をライン状にかしめることにより(かしめ部24)、固定部である爪11bの一部を電極(正極23)の側面に食い込ませる。このようにすることで、キャップ11を単電池21の正極23に冠着することができる。この結果、本実施形態の電池接続用具を、円筒形の単電池の正極に物理的に強固に接続することができる。 In addition, for example, as described above, the cap 11 is placed on the positive electrode 23 of the unit cell 21 and a caulking jig (not shown) is used, as shown in FIGS. 2 (e) and 2 (f). As shown, a desired position of the claw 11b is caulked in a line (caulking part 24), and a part of the claw 11b as a fixing part is bitten into the side surface of the electrode (positive electrode 23). In this way, the cap 11 can be attached to the positive electrode 23 of the unit cell 21. As a result, the battery connection tool of the present embodiment can be physically and firmly connected to the positive electrode of the cylindrical unit cell.
 前述のとおり、本実施形態の電池接続用具では、前記爪をかしめて、前記爪の一部を電極の側面または電池本体の側面に食い込ませている。このため、本実施形態の電池接続用具を、円筒形の単電池の電極に物理的に強固に接続することができる。本実施形態のように、電池接続用具と単電池の電極との物理的な接続を、機械的な接続により行うことで、接続不良の発生をより抑制することができる。 As described above, in the battery connection tool of the present embodiment, the claws are caulked so that a part of the claws bites into the side surface of the electrode or the side surface of the battery body. For this reason, the battery connection tool of this embodiment can be physically firmly connected to the electrode of the cylindrical unit cell. As in this embodiment, the physical connection between the battery connection tool and the electrode of the unit cell is performed by mechanical connection, so that the occurrence of connection failure can be further suppressed.
 なお、本例では、前記各爪をライン状にかしめているが、本発明は、この例に限定されない。例えば、図2(g)に示すように、前記各爪において、点状にかしめることにより(かしめ部25)、固定部である爪11bの一部を電池本体(負極)の側面に食い込ませてもよい。また、本実施形態では、冠着することでキャップ11は単電池21の負極22に強固に固定されているが、本発明は、この例に限定されない。例えば、前記爪と電池本体(負極)の側面との間に所望の遊びや緩みがあることで、電気的な接続を保ちつつ少し動かすことができてもよい。前記キャップを単電池の正極に冠着する場合においても同様である。 In this example, each of the claws is caulked in a line shape, but the present invention is not limited to this example. For example, as shown in FIG. 2 (g), a portion of the claw 11b which is a fixing portion is bitten into the side surface of the battery body (negative electrode) by caulking the claws in a dot shape (caulking portion 25). May be. Further, in the present embodiment, the cap 11 is firmly fixed to the negative electrode 22 of the unit cell 21 by being crowned, but the present invention is not limited to this example. For example, there may be desired play or looseness between the claw and the side surface of the battery main body (negative electrode), so that it may be able to be moved a little while maintaining electrical connection. The same applies when the cap is attached to the positive electrode of the unit cell.
 なお、本実施形態の電池接続用具では、前述のとおり、溶接による接続を行っていない。ただし、これは、本発明における溶接の併用を制限するものではない。本発明において、溶接を併用すると、溶接部以外に電池接続用具により単電池に物理的に接続固定されるので、溶接部の破断が起こりにくくなる。前記溶接としては、例えば、抵抗溶接、レーザー溶接、アーク溶接等があげられる。 In addition, in the battery connection tool of this embodiment, as described above, connection by welding is not performed. However, this does not limit the combined use of welding in the present invention. In the present invention, when welding is used together, the welded portion is physically connected and fixed to the unit cell by the battery connecting tool in addition to the welded portion, so that the welded portion is hardly broken. Examples of the welding include resistance welding, laser welding, arc welding, and the like.
 本発明の電池接続用具を接続する、前記単電池は特に限定されず、例えば、一次電池、二次電池等があげられる。これらの中でも、二次電池が好ましい。前記二次電池としては、例えば、リチウムイオン電池、ニッケルカドミウム蓄電池、ニッケル水素電池等があげられる。これらの中でも、リチウムイオン電池が特に好ましい。 The unit cell to which the battery connection tool of the present invention is connected is not particularly limited, and examples thereof include a primary battery and a secondary battery. Among these, a secondary battery is preferable. Examples of the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery. Among these, a lithium ion battery is particularly preferable.
 本実施形態の電池接続用具は、例えば、組電池モジュールにおける外部付加の入力端または出力端(外部端子)と、前記外部端子に接続される単電池との接続に好適に用いることができる。この場合、本実施形態の電池接続用具は、前記キャップにより単電池と接続され、前記接続端子により前記外部端子に接続される。すなわち、前記接続端子は、前記外部端子との接続用の接続端子として用いられる。これにより、単電池と外部端子との間において、振動または充放電時に発する熱による、例えば、金属の膨張収縮による接続不良の発生を防ぐことができ、電気的接続の信頼性および安定性を保持することができる。なお、本発明の電池接続用具の用途は、上記記載により制限ないし限定されない。 The battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal. In this case, the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal. As a result, it is possible to prevent the occurrence of connection failure due to expansion or shrinkage of the metal due to vibration or heat generated during charging or discharging between the unit cell and the external terminal, and maintain the reliability and stability of the electrical connection. can do. In addition, the use of the battery connection tool of the present invention is not limited or limited by the above description.
 前述のとおり、本実施形態の電池接続用具は、キャップ11と、接続端子13とを含む。キャップ11は、プレート11aと、3つの爪11bとを含む。 As described above, the battery connection tool of the present embodiment includes the cap 11 and the connection terminal 13. The cap 11 includes a plate 11a and three claws 11b.
 キャップ11は、前述のとおり、これに接続する単電池の電極の大きさまたは形状等に応じて、任意の適切な大きさまたは形状等とすることができる。キャップ11の形成材料は、導電性を有していればよく、例えば、単電池の電極の形成材料と同様である。防錆の観点から、前記形成材料としては、例えば、防錆加工であるニッケルメッキ、スズメッキ、亜鉛メッキが可能な鉄等があげられる。また、前記形成材料としては、嵌合強度の観点から、例えば、リン青銅、黄銅、丹銅、ハード銅、ニッケル、アルミニウム等があげられる。 As described above, the cap 11 can have any appropriate size or shape depending on the size or shape of the electrode of the unit cell connected thereto. The formation material of the cap 11 should just have electroconductivity, for example, is the same as the formation material of the electrode of a cell. From the viewpoint of rust prevention, examples of the forming material include iron, which can be nickel-plated, tin-plated, and zinc-plated, which is a rust-proofing process. Examples of the forming material include phosphor bronze, brass, red copper, hard copper, nickel, and aluminum from the viewpoint of fitting strength.
 本実施形態の電池接続用具では、プレート11aの形状は、円形である。ただし、本発明は、この例に限定されない。例えば、正方形または長方形等の矩形であっても、六角形等の多角形であってもよく、これらを組み合わせた形状であってよい。プレート11aのサイズは、例えば、単電池の電極面のサイズと同等か、またはこれより前記キャップの板厚分大きめのサイズである。プレート11aの厚みは、特に制限されない。 In the battery connection tool of the present embodiment, the shape of the plate 11a is a circle. However, the present invention is not limited to this example. For example, it may be a rectangle such as a square or a rectangle, a polygon such as a hexagon, or a combination of these. The size of the plate 11a is, for example, equal to the size of the electrode surface of the unit cell, or larger than the plate thickness of the cap. The thickness of the plate 11a is not particularly limited.
 プレート11aの電極接触面には、電気的接触抵抗の低減のために、例えば、電気伝導率の高い導電性樹脂層が形成されていてもよい。導電性の高い樹脂層を形成すると、プレートと電池との接触面積を大きくすることができるので、電気的抵抗の少ない接続が可能となる。前記導電性樹脂層の形成材料としては、例えば、PTC(Positive Temperature Coefficient)、銀ペースト、アルミニウムペースト、ニッケルペースト、カーボン混練樹脂等があげられる。個々の単電池の放熱を促進するために、例えば、放熱促進層が形成されていてもよい。前記放熱促進層の形成材料としては、例えば、高熱伝導樹脂、金属ペースト、放熱シリコーングリース等があげられる。これらの層は、一種類を単独で用いてもよいし、二種類以上を併用してもよい。これらの層の厚みは、電気的接続を阻害しない範囲であればよい。また、これらの層は、前述の形成材料を、例えば、前記プレートの電極接触面に塗工等して形成することができる。
 また、前述のように溶接を併用する場合には、溶接部分の錆を防止するために、溶接後に、溶接部分周囲に防錆層が形成されてもよい。前記防錆層の形成材料としては、例えば、防錆剤、酸化防止剤等があげられる。また、酸化防止の機能がなくとも、導電性を有した材料であると、溶接部分の防錆処理が可能となる。
For example, a conductive resin layer with high electrical conductivity may be formed on the electrode contact surface of the plate 11a in order to reduce electrical contact resistance. When a highly conductive resin layer is formed, the contact area between the plate and the battery can be increased, so that connection with less electrical resistance is possible. Examples of the material for forming the conductive resin layer include PTC (Positive Temperature Coefficient), silver paste, aluminum paste, nickel paste, and carbon kneaded resin. In order to promote the heat dissipation of the individual cells, for example, a heat dissipation promotion layer may be formed. Examples of the material for forming the heat dissipation promoting layer include high thermal conductive resin, metal paste, and heat dissipation silicone grease. These layers may be used alone or in combination of two or more. The thickness of these layers should just be the range which does not inhibit an electrical connection. In addition, these layers can be formed by applying the above-described forming material to, for example, the electrode contact surface of the plate.
Moreover, when using welding together as mentioned above, in order to prevent the rust of a welding part, a rust prevention layer may be formed around a welding part after welding. Examples of the material for forming the rust preventive layer include a rust preventive agent and an antioxidant. Moreover, even if there is no function of preventing oxidation, the welded portion can be rust-proofed if it is a conductive material.
 本実施形態の電池接続用具では、爪11bは、3本であるが、本発明は、この例に限定されない。前記爪は、少なくとも2本であればよく、例えば、2本であっても、4本であっても、5本や6本であっても、それ以上の本数であってもよい。爪11bの大きさは、例えば、キャップの単電池の電極への接続に際し、前記電極を充分保持できる大きさである。なお、前記爪の形状は、この例に限定されず、接続する電極の形状等に応じて種々の形状とすることができる。例えば、電極に排気口が設けられている場合には、この排気口に引っ掛けられるように、例えば、前記爪の先端部に返しとなる突起が設けられていてもよい。 In the battery connection tool of the present embodiment, there are three claws 11b, but the present invention is not limited to this example. The number of the nails may be at least two, for example, two, four, five or six, or more. The size of the claw 11b is, for example, a size that can sufficiently hold the electrode when the cap is connected to the electrode of the unit cell. In addition, the shape of the nail | claw is not limited to this example, According to the shape etc. of the electrode to connect, it can be set as various shapes. For example, in the case where an exhaust port is provided in the electrode, for example, a return protrusion may be provided at the tip of the claw so as to be hooked on the exhaust port.
 接続端子13の形成材料は、例えば、キャップ11と同様である。接続端子13の長さは、特に限定されず、本実施形態の電池接続用具の用途に応じて、任意の長さとすることができる。本実施形態の電池接続用具において、例えば、前述のように、前記接続端子が外部端子との接続に用いられる場合には、前記接続端子は、電圧監視計測器または電圧データ処理装置(電圧監視回路)との接続に用いられてもよい。この場合、例えば、前記接続端子に電圧監視端子が接続されていてもよい。この電圧監視端子により、本実施形態の電池接続用具を、電圧監視計測器または電圧データ処理装置に接続することができる。前記電圧監視端子は、例えば、前記接続端子から分岐した端子であってもよい。また、前記接続端子が前記電圧監視端子を兼ねてもよい。前記電圧接続端子についての詳細は、後述する。 The forming material of the connection terminal 13 is the same as that of the cap 11, for example. The length of the connection terminal 13 is not particularly limited, and can be an arbitrary length depending on the application of the battery connection tool of the present embodiment. In the battery connection tool of the present embodiment, for example, as described above, when the connection terminal is used for connection with an external terminal, the connection terminal is a voltage monitoring instrument or a voltage data processing device (voltage monitoring circuit). ) May be used. In this case, for example, a voltage monitoring terminal may be connected to the connection terminal. With this voltage monitoring terminal, the battery connection tool of this embodiment can be connected to a voltage monitoring measuring instrument or a voltage data processing device. The voltage monitoring terminal may be, for example, a terminal branched from the connection terminal. The connection terminal may also serve as the voltage monitoring terminal. Details of the voltage connection terminal will be described later.
 本実施形態の電池接続用具は、例えば、組電池モジュールにおける外部付加の入力端または出力端(外部端子)と、前記外部端子に接続される単電池との接続に好適に用いることができる。この場合、本実施形態の電池接続用具は、前記キャップにより単電池と接続され、前記接続端子により前記外部端子に接続される。すなわち、前記接続端子は、前記外部端子との接続用の接続端子として用いられる。これにより、単電池と外部端子との間において、振動または充放電時に発する熱による、例えば、金属の膨張収縮による接続不良の発生を防ぐことができ、電気的接続の信頼性および安定性を保持することができる。なお、本発明の電池接続用具の用途は、上記記載により制限ないし限定されない。 The battery connection tool of the present embodiment can be suitably used, for example, for connecting an externally added input terminal or output terminal (external terminal) in a battery module and a unit cell connected to the external terminal. In this case, the battery connection tool of the present embodiment is connected to the single cell by the cap, and is connected to the external terminal by the connection terminal. That is, the connection terminal is used as a connection terminal for connection to the external terminal. As a result, it is possible to prevent the occurrence of connection failure due to expansion or shrinkage of the metal due to vibration or heat generated during charging or discharging between the unit cell and the external terminal, and maintain the reliability and stability of the electrical connection. can do. In addition, the use of the battery connection tool of the present invention is not limited or limited by the above description.
 本実施形態の電池接続用具は、例えば、キャップおよび接続端子を形成する材料の板を、プレス抜き加工することで一体成形して製造可能である。あるいは、本実施形態の電池接続用具は、ワイヤーカットで、材料の板を所定の大きさに切断し、治具で曲げ加工して、製造することもできる。前記曲げ加工と同時に、本実施形態の接続用具を電池に装着することもできる。ただし、本実施形態の電池接続用具を製造する方法は、この例に限定されない。 The battery connection tool of the present embodiment can be manufactured by, for example, integrally molding a plate of a material that forms a cap and a connection terminal by press punching. Alternatively, the battery connection tool of the present embodiment can be manufactured by wire cutting, cutting a plate of material into a predetermined size, and bending it with a jig. Simultaneously with the bending process, the connection tool of this embodiment can be attached to the battery. However, the method for manufacturing the battery connection tool of the present embodiment is not limited to this example.
 以下に、本実施形態の電池接続用具の変形例について、図を参照して説明する。なお、下記の変形例は、2つ以上を組み合わせてもよい。 Hereinafter, a modification of the battery connection tool of the present embodiment will be described with reference to the drawings. Note that two or more of the following modifications may be combined.
 本実施形態の電池接続用具では、前述のとおり、前記固定部が3本の爪であるが、本発明は、この例に限定されない。例えば、一つの前記固定部が、前記電極接触部の縁部の全周に、環状に設けられていてもよい。図3に、前記一つの固定部が、前記電極接触部の縁部の全周に、環状に設けられている電池接続用具の一例の構成を示す。図3において、(a)はこの電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のD-D方向に見た断面図である。図4に、この電池接続用具の単電池の電極への接続を示す。図4において、(a)~(c)は、この電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のE-E方向に見た断面図である。(d)~(f)は、この電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のF-F方向に見た断面図である。 In the battery connection tool of this embodiment, as described above, the fixing portion is three claws, but the present invention is not limited to this example. For example, the one fixing portion may be provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion. FIG. 3 shows a configuration of an example of a battery connection tool in which the one fixing portion is provided in an annular shape around the entire periphery of the edge portion of the electrode contact portion. 3, (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a DD direction of the battery connection tool shown in (a). FIG. FIG. 4 shows the connection of the battery connection tool to the cell electrode. In FIG. 4, (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell. (C) is a cross-sectional view of the connected state shown in (b) as viewed in the EE direction. (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell. (F) is a cross-sectional view of the connection state shown in (e) as viewed in the direction FF.
 図3に示すとおり、この電池接続用具30では、導電性のキャップ31は、円形のプレート11aと、固定部である一つのスカート31bとを含む。スカート31bは、プレート11aの縁部の全周に、環状に設けられている。これら以外の構成は、前述の電池接続用具10と同様である。 As shown in FIG. 3, in this battery connection tool 30, the conductive cap 31 includes a circular plate 11 a and a single skirt 31 b that is a fixing portion. The skirt 31b is provided in an annular shape around the entire periphery of the edge of the plate 11a. Other configurations are the same as those of the battery connection tool 10 described above.
 この電池接続用具30では、かしめ用の治具(図示せず)を用いて、固定部であるスカート31bの全周をかしめることにより(図4(b)および図4(c)におけるかしめ部44)、スカート31bの一部を電池本体(負極22)の側面に食い込ませる。このようにすることで、キャップ31を単電池21の負極22に冠着する。また、固定部であるスカート31bの全周をかしめることにより(図4(e)および図4(f)におけるかしめ部44)、スカート31bの一部を電極(正極23)の側面に食い込ませる。このようにすることで、キャップ31を単電池21の正極23に冠着する。これら以外は、前述の電池接続用具10と同様にして、この電池接続用具30を単電池21の電極(負極および正極)に接続する。この結果、この電池接続用具30では、例えば、前述の電池接続用具10と比較して、その接続強度を向上させることができる。 In this battery connection tool 30, a caulking jig (not shown) is used to caulk the entire circumference of the skirt 31b as a fixing part (the caulking part in FIGS. 4B and 4C). 44) A part of the skirt 31b is bitten into the side surface of the battery main body (negative electrode 22). In this way, the cap 31 is attached to the negative electrode 22 of the unit cell 21. Further, by caulking the entire circumference of the skirt 31b as a fixing portion (caulking portion 44 in FIGS. 4 (e) and 4 (f)), a part of the skirt 31b is bitten into the side surface of the electrode (positive electrode 23). . In this way, the cap 31 is attached to the positive electrode 23 of the unit cell 21. Except for these, the battery connection tool 30 is connected to the electrodes (negative electrode and positive electrode) of the unit cell 21 in the same manner as the battery connection tool 10 described above. As a result, in this battery connection tool 30, for example, the connection strength can be improved as compared with the battery connection tool 10 described above.
 本実施形態の電池接続用具では、例えば、前記電極接触部に、スリットが形成されていてもよい。図5に、前記スリットが形成されている電池接続用具の一例の構成を示す。図5において、(a)はこの電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のG-G方向に見た断面図である。図6に、この電池接続用具の単電池の電極への接続を示す。図6において、(a)~(c)は、この電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のH-H方向に見た断面図である。(d)~(f)は、この電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のI-I方向に見た断面図である。 In the battery connection tool of the present embodiment, for example, a slit may be formed in the electrode contact portion. FIG. 5 shows a configuration of an example of a battery connection tool in which the slit is formed. 5, (a) is a perspective view of the battery connection tool, (b) is a top view of the battery connection tool, (c) is a bottom view of the battery connection tool, and (d) is a GG direction of the battery connection tool shown in (a). FIG. FIG. 6 shows the connection of the battery connection tool to the electrode of the unit cell. In FIG. 6, (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell. (C) is a cross-sectional view in the HH direction of the connected state shown in (b). (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell. (F) is a cross-sectional view of the connected state shown in (e) as seen in the II direction.
 図5に示すとおり、この電池接続用具50では、プレート11a表面の中央付近に、接続端子13が接続されている向きと直交する向きに長孔のスリット54が形成されている。これ以外の構成は、前述の電池接続用具10と同様である。なお、前記スリットの向きは、特に限定されず、例えば、前記接続端子が接続されている向きと平行の向きであってもよいし、前記接続端子が接続されている向きから所望の角度傾いた向きであってもよい。また、前記スリットは、本実施形態のように、前記プレートに形成された長孔であってもよいし、前記プレートの端部から形成された切り欠きであってよい。前記スリットの長さは、後述の抵抗溶接の際に、溶接電流を集中させることができる長さであればよい。なお、前記スリットの幅および形成箇所は、特に制限されない。 As shown in FIG. 5, in this battery connection tool 50, a slit 54 having a long hole is formed near the center of the surface of the plate 11a in a direction orthogonal to the direction in which the connection terminals 13 are connected. Other configurations are the same as those of the battery connection tool 10 described above. The direction of the slit is not particularly limited, and may be, for example, a direction parallel to the direction in which the connection terminal is connected, or is inclined at a desired angle from the direction in which the connection terminal is connected. Orientation may be used. Further, the slit may be a long hole formed in the plate as in the present embodiment, or may be a notch formed from an end of the plate. The length of the slit may be any length that can concentrate the welding current in resistance welding described later. In addition, the width | variety and formation location of the said slit are not restrict | limited in particular.
 このような形態であれば、この電池接続用具50の単電池21への接続に際して、抵抗溶接を併用する場合、例えば、抵抗溶接による接続強度を向上させ、かつ、抵抗溶接における接続の信頼性を向上させることができる。この効果を得るには、例えば、まず、3本の爪11bの間に負極22または正極23を嵌入して、キャップ11を単電池21の負極22または正極23にかぶせる。ついで、溶接用の2本の電極(溶接棒、図示せず)を、スリット54を挟んでプレート11aに接触させる。この状態で、前記両電極間に溶接電流を流して、抵抗溶接を行う(図6(c)または図6(f)における溶接部61)。これら以外は、前述の電池接続用具10と同様にして、この電池接続用具50を単電池の負極および正極に接続する。この抵抗溶接の際、前記両溶接棒を、スリット54を挟んでプレート11aに接触させているため、前記両電極間を流れる溶接電流のうち、プレート11a表面を流れる溶接電流が抑制され、そのほとんどが、プレート11aに接触している電極(負極22または正極23)を流れる。このようにして、溶接電流を集中させることができるため、抵抗溶接による接続をより強固なものにすることができる。これに加えて、溶接電流の拡散を抑制できるため、抵抗溶接時に設定する溶接電流量を制御しやすい。このため、例えば、過剰な溶接電流による電池内部や電極表面の損傷を低減することができるとともに、溶接電流不足による接続強度低下を抑制することができる。 If it is such a form, when using resistance welding together with the connection of the battery connection tool 50 to the unit cell 21, for example, the connection strength by resistance welding is improved and the reliability of connection in resistance welding is improved. Can be improved. In order to obtain this effect, for example, the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21. Next, two electrodes (welding rod, not shown) for welding are brought into contact with the plate 11a with the slit 54 interposed therebetween. In this state, resistance welding is performed by passing a welding current between the electrodes (welded portion 61 in FIG. 6C or FIG. 6F). Except for these, the battery connection tool 50 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 10 described above. At the time of this resistance welding, both the welding rods are brought into contact with the plate 11a with the slit 54 interposed therebetween. Therefore, among the welding currents flowing between the electrodes, the welding current flowing on the surface of the plate 11a is suppressed. Flows through the electrode (negative electrode 22 or positive electrode 23) in contact with the plate 11a. In this way, since the welding current can be concentrated, the connection by resistance welding can be made stronger. In addition to this, since the diffusion of the welding current can be suppressed, it is easy to control the welding current amount set during resistance welding. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be reduced, and reduction in connection strength due to insufficient welding current can be suppressed.
 前述の電池接続用具では、前記電極接触部には、さらに、プロジェクション(突起部)が形成されていることが好ましい。図7(a)から図7(d)に、前記プロジェクションが形成されている電池接続用具の一例の構成を示す。(a)はこの電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のJ-J方向に見た断面図である。図8に、この電池接続用具の単電池の電極への接続を示す。図8において、(a)~(c)は、この電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のK-K方向に見た断面図である。(d)~(f)は、この電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のL-L方向に見た断面図である。 In the battery connection tool described above, it is preferable that a projection (protrusion) is further formed in the electrode contact portion. FIG. 7A to FIG. 7D show a configuration of an example of a battery connection tool on which the projection is formed. (A) is a perspective view of the battery connection tool, (b) is a top view of the battery connection tool, (c) is a bottom view of the battery connection tool, and (d) is a cross-sectional view of the battery connection tool shown in FIG. It is. FIG. 8 shows the connection of this battery connection tool to the electrode of the unit cell. In FIG. 8, (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell. (C) is a cross-sectional view in the KK direction of the connected state shown in (b). (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell. (F) is a cross-sectional view in the LL direction of the connected state shown in (e).
 図7(a)から図7(d)に示すとおり、この電池接続用具70では、プレート11a表面の中央付近に形成されたスリット54の両脇に、1つずつプロジェクション(突起部)75が形成されている。これ以外の構成は、前述の電池接続用具50と同様である。なお、前記プロジェクションの個数は、特に制限されず、例えば、図7(e)に示すように、スリット54の両脇にプロジェクション75が2つずつ形成されていてもよい。 As shown in FIGS. 7A to 7D, in this battery connection tool 70, one projection (protrusion) 75 is formed on each side of the slit 54 formed near the center of the surface of the plate 11a. Has been. Other configurations are the same as those of the battery connection tool 50 described above. The number of projections is not particularly limited, and for example, two projections 75 may be formed on both sides of the slit 54 as shown in FIG.
 このような形態であれば、この電池接続用具70の単電池21への接続に際して、抵抗溶接を併用する場合、例えば、抵抗溶接による接続強度をさらに向上させ、かつ、抵抗溶接における接続の信頼性をさらに向上させることができる。この効果を得るには、例えば、まず、3本の爪11bの間に負極22または正極23を嵌入して、キャップ11を単電池21の負極22または正極23にかぶせる。ついで、溶接用の2本の電極(溶接棒、図示せず)をスリット54を挟んでプロジェクション75に合わせて接触させ、加圧した状態とする。この状態で、前記両溶接棒間に溶接電流を流して、抵抗溶接を行う(図8(c)および図8(f)における溶接部81)。これら以外は、前述の電池接続用具50と同様にして、この電池接続用具70を単電池の負極および正極に接続する。このようにすることで、前記両溶接棒間に流される溶接電流をより集中させることができる。このため、例えば、過剰な溶接電流による電池内部や電極表面の損傷をより低減することができるとともに、溶接電流不足による接続強度低下をより抑制することができる。 In such a form, when resistance welding is used together when connecting the battery connection tool 70 to the unit cell 21, for example, the connection strength by resistance welding is further improved, and the connection reliability in resistance welding is improved. Can be further improved. In order to obtain this effect, for example, the negative electrode 22 or the positive electrode 23 is first inserted between the three claws 11 b, and the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21. Next, two electrodes for welding (welding rod, not shown) are brought into contact with the projection 75 with the slit 54 interposed therebetween, and are pressed. In this state, resistance welding is performed by flowing a welding current between the two welding rods (welded portion 81 in FIGS. 8C and 8F). Except for these, the battery connection tool 70 is connected to the negative electrode and the positive electrode of the unit cell in the same manner as the battery connection tool 50 described above. By doing in this way, the welding current sent between the said welding rods can be concentrated more. For this reason, for example, damage to the inside of the battery and the electrode surface due to excessive welding current can be further reduced, and a decrease in connection strength due to insufficient welding current can be further suppressed.
 本実施形態の電池接続用具は、例えば、前記電極接触部の電極接触面に突起が形成されていてもよい。図9Aに、前記突起が形成されている電池接続用具の一例の構成を示す。図9Aにおいて、(a)はこの電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のM-M方向に見た断面図である。図10に、この電池接続用具の単電池の電極への接続を示す。図10において、(a)~(c)は、この電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のN-N方向に見た断面図である。(d)~(f)は、この電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のO-O方向に見た断面図である。 In the battery connection tool of the present embodiment, for example, a protrusion may be formed on the electrode contact surface of the electrode contact portion. FIG. 9A shows a configuration of an example of a battery connection tool on which the protrusion is formed. 9A, (a) is a perspective view of the battery connection tool, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a MM direction of the battery connection tool shown in (a). FIG. FIG. 10 shows the connection of the battery connection tool to the cell electrode. In FIG. 10, (a) to (c) show the connection of the battery connection tool to the negative electrode of the unit cell. (C) is a cross-sectional view of the connection state shown in (b) as viewed in the NN direction. (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell. (F) is a cross-sectional view of the connected state shown in (e) as viewed in the OO direction.
 図9Aに示すとおり、この電池接続用具90では、プレート11aの電極接触面11Aに、針状突起96が形成されている。これら以外の構成は、前述の電池接続用具10と同様である。針状突起96は、例えば、プレート11aにバーリング加工を行うことで形成することができる。針状突起96は、例えば、前記バーリング加工によりプレート11aを貫通して形成した形状(バーリング貫通形状)の突起であってもよい。 As shown in FIG. 9A, in this battery connection tool 90, needle-like protrusions 96 are formed on the electrode contact surface 11A of the plate 11a. Other configurations are the same as those of the battery connection tool 10 described above. The acicular protrusion 96 can be formed, for example, by performing a burring process on the plate 11a. The needle-like protrusion 96 may be, for example, a protrusion having a shape (burring penetrating shape) formed by penetrating the plate 11a by the burring process.
 このような形態であれば、この電池接続用具90の単電池21への接続に際して、押圧を加えながら、キャップ11を単電池21の負極22または正極23にかぶせることにより、図10(b)および図10(c)、または図10(e)および図10(f)に示すように、針状突起96を負極22または正極23に突き刺すことができる。これら以外は、前述の電池接続用具10と同様にして、この電池接続用具90を単電池の電極に接続する。これにより、キャップ11と電極(負極22または正極23)との接続をより確実にすることができる。また、単電池の電極との接触面積を増やすことができるため、例えば、接触抵抗を低減することができる。接触抵抗が大きくなると、発熱の原因となり、電池の劣化にもつながるため、接触抵抗を低減することができることは好ましい。 In such a configuration, when the battery connection tool 90 is connected to the single cell 21, the cap 11 is placed on the negative electrode 22 or the positive electrode 23 of the single cell 21 while applying pressure, so that FIG. As shown in FIG. 10C, or FIG. 10E and FIG. 10F, the needle-like protrusion 96 can be pierced into the negative electrode 22 or the positive electrode 23. Except for these, the battery connection tool 90 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. Thereby, the connection of the cap 11 and an electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable. Moreover, since a contact area with the electrode of a cell can be increased, for example, contact resistance can be reduced. When the contact resistance is increased, heat is generated and the battery is deteriorated. Therefore, it is preferable that the contact resistance can be reduced.
 なお、この電池接続用具90では、プレート11aの電極接触面11Aに、針状突起96が形成されているが、本発明は、この例に限定されない。前述の効果を得られる突起であればよい。例えば、図9B(a)に示すような前記電極接触面11Aにバイト96aにより形成された突起96A、図9B(b)に示すような前記電極接触面11Aに切れ込みを入れてめくりあげて形成された突起96B等があげられる。また、図9B(c)に示すような、前記電極接触面11Aに、溶融したはんだ96bを置き、そこに針96cを刺した状態で、前記はんだ96bを固めることによって形成した突起96Cであってもよい。
また、この電池接続用具90では、前述の電池接続用具10と同様に、爪11bの所望の位置をライン状にかしめているが(図10(b)および図10(c)、または図10(e)および図10(f)におけるかしめ部24)、本発明は、この例に限定されない。前述のように、前記針状突起を電極に突き刺すことで、この電池接続用具を、円筒形の単電池の電極に電気的に接続し、かつ物理的に強固に接続することができるのであれば、例えば、前記爪をかしめる工程は不要である。
In this battery connection tool 90, the needle-like protrusion 96 is formed on the electrode contact surface 11A of the plate 11a, but the present invention is not limited to this example. Any protrusion may be used as long as the above-described effect can be obtained. For example, a protrusion 96A formed by a cutting tool 96a on the electrode contact surface 11A as shown in FIG. 9B (a), and a notch is formed in the electrode contact surface 11A as shown in FIG. 9B (b). The protrusions 96B are examples. Also, as shown in FIG. 9B (c), there is a projection 96C formed by placing a molten solder 96b on the electrode contact surface 11A and setting the solder 96b in a state where the needle 96c is stuck there. Also good.
Further, in this battery connection tool 90, the desired position of the claw 11b is caulked in a line shape as in the case of the battery connection tool 10 described above (FIG. 10B and FIG. 10C) or FIG. e) and the caulking portion 24) in FIG. 10 (f), the present invention is not limited to this example. As described above, if the battery connection tool can be electrically connected to the electrode of the cylindrical unit cell and can be physically firmly connected by piercing the needle-like protrusion into the electrode, as described above. For example, the step of caulking the nail is not necessary.
 本実施形態の電池接続用具は、例えば、前記電極接触部が板状であり、前記電極接触部が、単電池の電極側に向かって凸状に湾曲していてもよい。図11に、前記電極接触部が単電池の電極側に向かって凸状に湾曲している電池接続用具の一例の構成を示す。図11において、(a)はこの電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のP-P方向に見た断面図である。図12に、この電池接続用具の単電池の電極への接続を示す。図12において、(a)~(c)は、この電池接続用具の単電池の負極への接続を示す。(c)は(b)に示す接続状態のQ-Q方向に見た断面図である。(d)~(f)は、この電池接続用具の単電池の正極への接続を示す。(f)は(e)に示す接続状態のR-R方向に見た断面図である。 In the battery connection tool of the present embodiment, for example, the electrode contact portion may have a plate shape, and the electrode contact portion may be convexly curved toward the electrode side of the unit cell. In FIG. 11, the structure of an example of the battery connection tool in which the said electrode contact part is curving convexly toward the electrode side of a cell is shown. 11A is a perspective view of the battery connection tool, FIG. 11B is a top view of the battery connection tool, FIG. 11C is a bottom view of the battery connection tool, and FIG. FIG. FIG. 12 shows the connection of the battery connection tool to the electrode of the unit cell. In FIG. 12, (a) to (c) show connection of the battery connection tool to the negative electrode of the unit cell. (C) is a cross-sectional view in the QQ direction of the connected state shown in (b). (D) to (f) show connection of the battery connection tool to the positive electrode of the unit cell. (F) is a cross-sectional view seen in the RR direction of the connected state shown in (e).
 図11に示すとおり、この電池接続用具110では、導電性のキャップ111は、板状で円形のプレート111aと、固定部である3本の爪11bとを含む。プレート111aは、単電池の電極側(プレート111aの電極接触面111A側)に向かって湾曲している。これら以外の構成は、前述の電池接続用具10と同様である。 As shown in FIG. 11, in this battery connection tool 110, the conductive cap 111 includes a plate-like circular plate 111 a and three claws 11 b that are fixing portions. The plate 111a is curved toward the electrode side of the unit cell (the electrode contact surface 111A side of the plate 111a). Other configurations are the same as those of the battery connection tool 10 described above.
 図12を参照して、この電池接続用具の単電池の電極への接続を説明する。3本の爪11bの間に負極22または正極23を嵌入して、押圧を加えながら、キャップ111を単電池21の負極22または正極23にかぶせる。この状態で、かしめ用の治具(図示せず)を用いて、爪11bの所望の位置をライン状にかしめることにより(図12(b)および図12(c)、または図12(e)および図12(f)におけるかしめ部24)、固定部である爪11bの一部を電池本体(負極22)の側面、または電極(正極23)の側面に食い込ませる。このようにすることで、図12(b)および図12(c)、または図12(e)および図12(f)に示すように、電極接触面111A側に湾曲していたプレート111aが、単電池21の負極22または正極23に接触して平坦な状態になる。これら以外は、前述の電池接続用具10と同様にして、この電池接続用具110を単電池の電極に接続する。このため、図12(c)および図12(f)に示すように、プレート111aから単電池21の電極に向けて力が加わる(下向きの矢印)。この結果、キャップ111と電極(負極22または正極23)との接続をより確実にすることができる。また、上記と同様の作用効果を得られるものとして、例えば、本発明の電池接続用具における前記電極接触部の前記電極接触面に導電性の弾性体が設けられたものがあげられる。前記弾性体としては、例えば、金属性のコイルバネ、板バネ等があげられる。 Referring to FIG. 12, the connection of the battery connection tool to the cell electrode will be described. The negative electrode 22 or the positive electrode 23 is inserted between the three claws 11b, and the cap 111 is placed on the negative electrode 22 or the positive electrode 23 of the unit cell 21 while applying pressure. In this state, a desired position of the claw 11b is caulked in a line using a caulking jig (not shown) (FIGS. 12B and 12C, or 12E). ) And the caulking portion 24 in FIG. 12 (f), and a part of the claw 11b which is the fixing portion is bitten into the side surface of the battery body (negative electrode 22) or the side surface of the electrode (positive electrode 23). By doing in this way, as shown in FIG.12 (b) and FIG.12 (c) or FIG.12 (e) and FIG.12 (f), the plate 111a which was curving to the electrode contact surface 111A side, It comes into contact with the negative electrode 22 or the positive electrode 23 of the unit cell 21 and becomes flat. Except for these, the battery connection tool 110 is connected to the electrode of the unit cell in the same manner as the battery connection tool 10 described above. For this reason, as shown in FIG.12 (c) and FIG.12 (f), force is applied toward the electrode of the cell 21 from the plate 111a (downward arrow). As a result, the connection between the cap 111 and the electrode (the negative electrode 22 or the positive electrode 23) can be made more reliable. Moreover, as what can acquire the effect similar to the above, what provided the electroconductive elastic body in the said electrode contact surface of the said electrode contact part in the battery connection tool of this invention is mention | raise | lifted, for example. Examples of the elastic body include metallic coil springs and leaf springs.
 なお、本実施形態では、電池接続用具を単電池の電極に物理的に強固に接続するために、前記爪または前記スカート等をかしめているが、本発明は、この例に限定されない。例えば、前記単電池の電極の側面部に、ネジ加工が施されている場合には、本発明の電池接続用具の前記爪または前記スカート等の前記固定部の電極接触側の面に、対応するネジ加工が施されていてもよい。この場合、本発明の電池接続用具を前記単電池の電極に、螺合よって物理的に接続することができる。また、例えば、前記単電池の電極の側面部に、溝加工が施されている場合には、本発明の電池接続用具の前記爪または前記スカート等の前記固定部の電極接触側の面に、例えば、この溝に対応する突起等の加工が施されていてもよい。この場合、本発明の電池接続用具を前記単電池の電極に、スナップ構造により嵌合させて物理的に接続することができる。スナップ構造で嵌合させることができると、かしめる工程を行うことなく、強固に固定することが可能となるので、作業効率の点で好ましく、量産化に好適である。また、例えば、前記単電池の電極面に、電気的に導電性のある面ファスナーのループが形成されている場合には、本発明の電池接続用具の前記電極接触部の電極接触面に、電気的に導電性のある面ファスナーのフックが形成されていてもよい。この場合、本発明の電池接続用具を前記単電池の電極に、電気的に導電性のある面ファスナーの貼り合せにより物理的に接続することができる。 In the present embodiment, the claw or the skirt is caulked in order to physically and firmly connect the battery connection tool to the electrode of the unit cell, but the present invention is not limited to this example. For example, when the side surface portion of the electrode of the unit cell is threaded, it corresponds to the surface on the electrode contact side of the fixing portion such as the nail or the skirt of the battery connection tool of the present invention. Screw processing may be given. In this case, the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by screwing. In addition, for example, in the case where a groove is formed on the side surface portion of the electrode of the unit cell, on the surface on the electrode contact side of the fixing portion such as the nail or the skirt of the battery connection tool of the present invention, For example, processing such as protrusions corresponding to the grooves may be performed. In this case, the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by fitting with the snap structure. If they can be fitted with a snap structure, they can be firmly fixed without performing a caulking step, which is preferable in terms of work efficiency and is suitable for mass production. For example, when a loop of an electrically conductive hook-and-loop fastener is formed on the electrode surface of the unit cell, the electrode contact surface of the electrode contact portion of the battery connection tool of the present invention A hook of a hook-and-loop fastener that is electrically conductive may be formed. In this case, the battery connection tool of the present invention can be physically connected to the electrode of the unit cell by bonding an electrically conductive hook-and-loop fastener.
〔実施形態2〕
 本実施形態の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、一方の前記電極取付部が前記正極用取付部であり、他方の前記電極取付部が負極用取付部であることを特徴とする。
[Embodiment 2]
The battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, one of the electrode mounting portions is the positive electrode mounting portion, and the other The electrode mounting portion is a negative electrode mounting portion.
 図13に、本実施形態の電池接続用具の一例の構成を示す。図13において、(a)は本実施形態の電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のS-S方向に見た断面図である。図13に示すとおり、この電池接続用具130は、正極用キャップ131と、負極用キャップ132と、接続端子133とを含む。接続端子133は、正極用キャップ131と負極用キャップ132とに接続されている。正極用キャップ131は、円形のプレート131aと、3本の爪131bとを含む。3本の爪131bは、プレート131aの縁部に、相互に間隔をおいて設けられている。負極用キャップ132は、円形のプレート132aと、3本の爪132bとを含む。3本の爪132bは、プレート132aの縁部に、相互に間隔をおいて設けられている。プレート131a表面の中央付近に、接続端子133が接続されている向きと直交する向きに長孔のスリット134aが形成されている。プレート132a表面の中央付近に、接続端子133が接続されている向きと直交する向きに長孔のスリット134bが形成されている。本実施形態での前記「正極用キャップ」は、本発明における「正極用取付部」に相当する。本実施形態での前記「負極用キャップ」は、本発明における「負極用取付部」に相当する。後述する実施形態4および5においても同様である。本実施形態の電池接続用具は、例えば、前述の外部端子に接続するための接続端子を含んでいてもよい。 FIG. 13 shows an example of the configuration of the battery connection tool of the present embodiment. In FIG. 13, (a) is a perspective view of the battery connection tool of this embodiment, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is an S-- of the battery connection tool shown in (a). It is sectional drawing seen in the S direction. As shown in FIG. 13, the battery connection tool 130 includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133. The connection terminal 133 is connected to the positive electrode cap 131 and the negative electrode cap 132. The positive electrode cap 131 includes a circular plate 131a and three claws 131b. The three claws 131b are provided at the edge of the plate 131a with a space between each other. The negative electrode cap 132 includes a circular plate 132a and three claws 132b. The three claws 132b are provided at intervals on the edge of the plate 132a. In the vicinity of the center of the surface of the plate 131a, an elongated slit 134a is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected. In the vicinity of the center of the surface of the plate 132a, an elongated slit 134b is formed in a direction orthogonal to the direction in which the connection terminal 133 is connected. The “positive electrode cap” in the present embodiment corresponds to the “positive electrode mounting portion” in the present invention. The “negative electrode cap” in the present embodiment corresponds to the “negative electrode mounting portion” in the present invention. The same applies to Embodiments 4 and 5 described later. The battery connection tool of this embodiment may include, for example, a connection terminal for connecting to the external terminal described above.
 つぎに、図14を参照して、本実施形態の電池接続用具の2本の単電池の電極への接続を説明する。図14(c)は、図14(b)に示す接続状態のT-T方向に見た断面図である。 Next, with reference to FIG. 14, the connection of the battery connection tool of the present embodiment to the electrodes of two unit cells will be described. FIG. 14C is a cross-sectional view of the connection state shown in FIG. 14B viewed in the TT direction.
 まず、図14(a)に示すように、電池接続用具130と、2本の円筒形の単電池141aおよび141bとを準備する。つぎに、正極用キャップ131および負極用キャップ132を吸引または磁石で保持できる治具または工具(図示せず)を用いて、プレート131aの中心と一方の単電池141aの正極143aの中心とが合わさるように、正極用キャップ131を単電池141aの上方に位置させる。同時に、プレート132aの中心と他方の単電池141bの負極142bの中心とが合わさるように、負極用キャップ132を単電池141bの上方に位置させる。この状態から、正極用キャップ131および負極用キャップ132を下方に移動させる。これにより、正極用キャップ131の3本の爪131bの間に単電池141aの正極143aを嵌入して、正極用キャップ131を単電池141aの正極143aにかぶせる。このようにして、電極接触部であるプレート131aが単電池141aの正極143aの上面上に配置されることで、本実施形態の電池接続用具を一方の円筒形の単電池の正極に電気的に接続することができる。同時に、負極用キャップ132の3本の爪132bの間に単電池141bの負極142bを嵌入して、負極用キャップ132を単電池141bの負極142bにかぶせる。このようにして、電極接触部であるプレート132aが単電池141bの負極142bの上面上に配置されることで、本実施形態の電池接続用具を他方の円筒形の単電池の負極に電気的に接続することができる。 First, as shown in FIG. 14A, a battery connection tool 130 and two cylindrical unit cells 141a and 141b are prepared. Next, the center of the plate 131a and the center of the positive electrode 143a of one unit cell 141a are aligned using a jig or tool (not shown) that can attract or hold the positive electrode cap 131 and the negative electrode cap 132 with a magnet. As such, the positive electrode cap 131 is positioned above the unit cell 141a. At the same time, the negative electrode cap 132 is positioned above the unit cell 141b so that the center of the plate 132a and the center of the negative unit 142b of the other unit cell 141b are aligned. From this state, the positive electrode cap 131 and the negative electrode cap 132 are moved downward. As a result, the positive electrode 143a of the single cell 141a is fitted between the three claws 131b of the positive electrode cap 131, and the positive electrode cap 131 is placed over the positive electrode 143a of the single cell 141a. Thus, the plate 131a which is an electrode contact part is arrange | positioned on the upper surface of the positive electrode 143a of the cell 141a, and the battery connection tool of this embodiment is electrically connected to the positive electrode of one cylindrical cell. Can be connected. At the same time, the negative electrode 142b of the single cell 141b is fitted between the three claws 132b of the negative electrode cap 132, and the negative electrode cap 132 is placed over the negative electrode 142b of the single cell 141b. Thus, the plate 132a which is an electrode contact part is arrange | positioned on the upper surface of the negative electrode 142b of the cell 141b, and the battery connection tool of this embodiment is electrically connected to the negative electrode of the other cylindrical cell. Can be connected.
 この状態で、かしめ用の治具(図示せず)を用いて、爪131bの所望の位置をライン状にかしめることにより(図14(b)および図14(c)におけるかしめ部144a)、固定部である爪131bの一部を単電池141aの電極(正極143a)の側面に食い込ませる。このようにして、正極用キャップ131を単電池141aの正極143aに冠着する。このように、固定部である爪131bが単電池141aの電極(正極143a)の側面上に配置されることで、本実施形態の電池接続用具を、一方の円筒形の単電池の正極に物理的に強固に接続することができる。一方、かしめ用の治具(図示せず)を用いて、爪132bの所望の位置をライン状にかしめることにより(図14(b)および図14(c)におけるかしめ部144b)、固定部である爪132bの一部を単電池141bの電池本体(負極142b)の側面に食い込ませる。このようにして、負極用キャップ132を単電池141bの負極142bに冠着する。このように、固定部である爪132bが単電池141bの電池本体(負極142b)の側面上に配置されることで、本実施形態の電池接続用具を、他方の円筒形の単電池の負極に物理的に強固に接続することができる。爪131bおよび132bをかしめる方法は、例えば、実施形態1で示した方法と同様である。この状態で、さらに、スリット134aを挟んで抵抗溶接することで、正極用キャップ131と単電池141aの正極143aとを溶接接続する(図14(c)における溶接部145a)。一方、スリット134bを挟んで抵抗溶接することで、負極用キャップ132と単電池141bの負極142bとを溶接接続する(図14(c)における溶接部145b)。なお、前述のとおり、抵抗溶接等の溶接接続を必ずしも行う必要はない。 In this state, by using a caulking jig (not shown) to caulk the desired position of the claw 131b in a line (caulking portion 144a in FIGS. 14B and 14C), A part of the claw 131b, which is a fixed part, is bitten into the side surface of the electrode (positive electrode 143a) of the unit cell 141a. In this manner, the positive electrode cap 131 is attached to the positive electrode 143a of the unit cell 141a. As described above, the claw 131b, which is a fixing portion, is arranged on the side surface of the electrode (positive electrode 143a) of the unit cell 141a, so that the battery connection tool of this embodiment is physically applied to the positive electrode of one cylindrical unit cell. Can be firmly connected. On the other hand, a fixed portion is obtained by caulking a desired position of the claw 132b in a line using a caulking jig (not shown) (caulking portion 144b in FIGS. 14B and 14C). A part of the claw 132b is bitten into the side surface of the battery body (negative electrode 142b) of the unit cell 141b. In this way, the negative electrode cap 132 is attached to the negative electrode 142b of the unit cell 141b. In this way, the claw 132b, which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 142b) of the unit cell 141b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell. It can be physically and firmly connected. The method for caulking the claws 131b and 132b is the same as the method shown in the first embodiment, for example. In this state, the positive electrode cap 131 and the positive electrode 143a of the unit cell 141a are further welded and connected by resistance welding with the slit 134a interposed therebetween (welded portion 145a in FIG. 14C). On the other hand, the negative electrode cap 132 and the negative electrode 142b of the unit cell 141b are welded and connected by resistance welding with the slit 134b interposed therebetween (welded portion 145b in FIG. 14C). As described above, welding connection such as resistance welding is not necessarily performed.
 このようにすることで、本実施形態の電池接続用具を、2本の円筒形の単電池における一方の単電池の正極と他方の単電池の負極とに、電気的に接続し、かつ、物理的に強固に接続することができる。この結果、2本の単電池141aと単電池141bとが、本実施形態の電池接続用具により直列に接続され、かつ、物理的に強固に接続される。したがって、本実施形態の電池接続用具は、例えば、組電池モジュールにおける2本の単電池の正極と負極との直列接続に好適に用いることができる。これにより、2本の円筒形の単電池間の直列接続において、振動または充放電時に発する熱による電極と接続端子との間の接続不良の発生を防ぐことができ、単電池を組み合わせて組電池モジュールを構成するのに際して、各電気的接続の信頼性および安定性を保持することができる。なお、本発明の電池接続用具の用途は、上記記載により制限ないし限定されない。 By doing in this way, the battery connection tool of this embodiment is electrically connected to the positive electrode of one unit cell and the negative electrode of the other unit cell in two cylindrical unit cells, and is physically Can be firmly connected. As a result, the two unit cells 141a and the unit cells 141b are connected in series by the battery connection tool of the present embodiment, and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used, for example, for series connection of the positive and negative electrodes of two unit cells in the assembled battery module. As a result, in series connection between two cylindrical cells, it is possible to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging / discharging. In configuring the module, the reliability and stability of each electrical connection can be maintained. In addition, the use of the battery connection tool of the present invention is not limited or limited by the above description.
 なお、本実施形態では、正極用キャップ131および負極用キャップ132の両方を同時に(一括して)、各単電池の電極に電気的、物理的に接続しているが、本発明は、この例に限定されない。正極用キャップ131および負極用キャップ132は、逐次に各単電池の電極に電気的、物理的に接続してもよい。後述する実施形態4および実施形態5においても同様である。 In this embodiment, both the positive electrode cap 131 and the negative electrode cap 132 are simultaneously (collectively) electrically and physically connected to the electrodes of each unit cell. It is not limited to. The positive electrode cap 131 and the negative electrode cap 132 may be electrically and physically connected to the electrodes of each unit cell sequentially. The same applies to Embodiments 4 and 5 described later.
 本実施形態の電池接続用具は、例えば、さらに、電圧監視端子を含んでもよい。図15(a)に、前記電圧監視端子を含む電池接続用具の一例の構成を示す。図示のとおり、この電池接続用具150では、電圧監視端子158を含む。この電圧監視端子158は、正極用キャップ131と負極用キャップ132とを接続する接続端子153に接続されている。これら以外の構成は、前述の電池接続用具130と同様である。 The battery connection tool of the present embodiment may further include a voltage monitoring terminal, for example. FIG. 15A shows a configuration of an example of a battery connection tool including the voltage monitoring terminal. As illustrated, the battery connection tool 150 includes a voltage monitoring terminal 158. The voltage monitoring terminal 158 is connected to a connection terminal 153 that connects the positive electrode cap 131 and the negative electrode cap 132. Other configurations are the same as those of the battery connecting tool 130 described above.
 この電池接続用具150は、例えば、前述の電池接続用具130と同様の方法により、図15(b)に示すように、2本の単電池に接続することができる。さらに、電圧監視端子158により、電圧監視計測器または電圧データ処理装置(図示せず)に接続することができる。これにより、単電池141aの正極143aと単電池141bの負極142bとの間に印加される電圧を監視することができる。電圧の監視は、組電池モジュールを構成する各単電池の、充電時の過充電や放電時の過放電を防止し、各単電池の電圧を同じレベルに保つために有効である。電圧を監視することで、組電池モジュールを構成する単電池の特性を平均化して、一部の電池に多大の負荷がかからないようにすることができる。このため、組電池モジュールの安定化、安全化が可能であるとともに、各単電池における寿命の低下を抑制することができる。 The battery connection tool 150 can be connected to two single cells as shown in FIG. 15B, for example, by the same method as the battery connection tool 130 described above. Further, the voltage monitoring terminal 158 can be connected to a voltage monitoring measuring instrument or a voltage data processing device (not shown). Thereby, the voltage applied between the positive electrode 143a of the single cell 141a and the negative electrode 142b of the single cell 141b can be monitored. The voltage monitoring is effective for preventing overcharging at the time of charging and overdischarging at the time of discharging of each unit cell constituting the assembled battery module, and keeping the voltage of each unit cell at the same level. By monitoring the voltage, it is possible to average the characteristics of the single cells constituting the assembled battery module so that a large load is not applied to some of the batteries. For this reason, while being able to stabilize and safety | security of an assembled battery module, the fall of the lifetime in each single battery can be suppressed.
 なお、前記電圧監視端子と、電圧監視計測器または電圧データ処理装置とを接続する方法は、特に限定されないが、例えば、前記電圧監視端子を、前記電圧監視計測器または前記電圧データ処理装置(電圧監視回路)の接続端子にかしめて接続してもよい。このように接続するためには、例えば、前記電圧監視端子を、前記電圧監視計測器または前記電圧データ処理装置の接続端子にかしめて接続するのに適した構造とすることが好ましい。あるいは、はんだ付け、抵抗溶接、アーク溶接等で接続してもよい。このようにすれば、前記電圧監視端子と、前記電圧監視計測器または前記電圧データ処理装置とを簡易に、かつ、確実に接続することができる。 The method for connecting the voltage monitoring terminal to the voltage monitoring measuring instrument or the voltage data processing device is not particularly limited. For example, the voltage monitoring terminal is connected to the voltage monitoring measuring instrument or the voltage data processing device (voltage It may be connected to the connection terminal of the monitoring circuit). In order to connect in this way, for example, it is preferable that the voltage monitoring terminal has a structure suitable for caulking and connecting to the voltage monitoring measuring instrument or the connection terminal of the voltage data processing device. Or you may connect by soldering, resistance welding, arc welding, etc. If it does in this way, the voltage monitoring terminal and the voltage monitoring measuring instrument or the voltage data processing device can be connected easily and reliably.
 本実施形態の電池接続用具は、例えば、前記接続端子がその途中で複数本に分岐しており、前記分岐した接続端子が前記電極取付部に接続されていてもよい。図15(c)に、前記分岐した接続端子を含む電池接続用具の一例の構成を示す。図示のとおり、この電池接続用具150cは、正極用キャップ131と、負極用キャップ132と、接続端子133aとを含む。接続端子133aは、その一端側が2本の接続端子133bおよび133cに分岐している。この接続端子133bおよび133cが、正極用キャップ131に接続されている。接続端子133aの他端は、負極用キャップ132に接続されている。これら以外の構成は、前述の電池接続用具130と同様である。 In the battery connection tool of the present embodiment, for example, the connection terminal may be branched into a plurality of parts on the way, and the branched connection terminal may be connected to the electrode mounting portion. FIG. 15C shows a configuration of an example of a battery connection tool including the branched connection terminal. As illustrated, the battery connection tool 150c includes a positive electrode cap 131, a negative electrode cap 132, and a connection terminal 133a. One end of the connection terminal 133a branches into two connection terminals 133b and 133c. The connection terminals 133b and 133c are connected to the positive electrode cap 131. The other end of the connection terminal 133a is connected to the negative electrode cap 132. Other configurations are the same as those of the battery connecting tool 130 described above.
 このような形態であれば、前述の電池接続用具130と同様に、この電池接続用具150cを2本の単電池に接続した際に、接続端子133aが、分岐した2本の接続端子133bおよび133cにより、正極用キャップ131に接続されているため、振動または充放電時に発する熱による電極と接続端子との間に発生する応力を分散しやすくなる。これにより、電極と接続端子との間の接続不良の発生をより少なくすることができる。 If it is such a form, like the above-mentioned battery connection tool 130, when this battery connection tool 150c is connected to two single cells, the connection terminal 133a has two branched connection terminals 133b and 133c. Therefore, since it is connected to the positive electrode cap 131, the stress generated between the electrode and the connection terminal due to vibration or heat generated during charging and discharging is easily dispersed. Thereby, generation | occurrence | production of the connection failure between an electrode and a connection terminal can be decreased more.
 なお、この電池接続用具では、接続端子133aの一端側が2本に分岐しているが、本発明は、この例に限定されない。例えば、前記接続端子の両端が、複数本に分岐していてもよい。 In this battery connection tool, one end side of the connection terminal 133a is branched into two, but the present invention is not limited to this example. For example, both ends of the connection terminal may be branched into a plurality.
〔実施形態3〕
 本実施形態の組電池モジュールは、2本以上の電池の接続に、実施形態1および実施形態2で示した電池接続用具を用いていることを特徴とする。
[Embodiment 3]
The assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the first and second embodiments is used to connect two or more batteries.
 図16に、本実施形態の組電池モジュールの一例の構成を示す。図16において、(a)は本実施形態の組電池モジュールの平面図、(b)は同組電池モジュールを、(a)とは反対側から見た平面図である。前記両図に示すとおり、この組電池モジュール160は、5本の単電池161a、161b、161c、161dおよび161eと、2個の電池接続用具10aおよび10bと、4個の電池接続用具130a、130b、130cおよび130dとを含む。電池接続用具10aおよび10bは、実施形態1で示した電池接続用具である。電池接続用具130a、130b、130cおよび130dは、実施形態2で示した電池接続用具である。なお、図面を見やすくするために、図16(a)において、図16(b)側に見える電極に接続される各電池接続用具のキャップ部分は、図示を省略している。また、図16(b)において、図16(a)側に見える電極に接続される各電池接続用具のキャップ部分は、図示を省略している。 FIG. 16 shows an example of the configuration of the assembled battery module of the present embodiment. In FIG. 16, (a) is a plan view of the assembled battery module of the present embodiment, and (b) is a plan view of the assembled battery module as viewed from the side opposite to (a). As shown in both the drawings, the assembled battery module 160 includes five unit cells 161a, 161b, 161c, 161d and 161e, two battery connection tools 10a and 10b, and four battery connection tools 130a and 130b. , 130c and 130d. Battery connection tools 10a and 10b are the battery connection tools shown in the first embodiment. Battery connection tools 130a, 130b, 130c and 130d are the battery connection tools shown in the second embodiment. In order to make the drawing easy to see, in FIG. 16A, the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 16B is not shown. Moreover, in FIG.16 (b), illustration is abbreviate | omitting the cap part of each battery connection tool connected to the electrode visible to the Fig.16 (a) side.
 前記5本の単電池は、千鳥状に配置されている。前記5本の単電池は、図示しない枠体(ホルダ)で遊動しないように固定されている。単電池161aの正極163aと単電池161bの負極162bとは、電池接続用具130aにより直列に接続されている。単電池161bの正極163bと単電池161cの負極162cとは、電池接続用具130bにより直列に接続されている。単電池161cの正極163cと単電池161dの負極162dとは、電池接続用具130cにより直列に接続されている。単電池161dの正極163dと単電池161eの負極162eとは、電池接続用具130dにより直列に接続されている。電池接続用具10aは、この組電池モジュール160の一方の端部に相当する単電池161aの負極162aに接続されている。電池接続用具10bは、この組電池モジュール160の他方の端部に相当する単電池161eの正極163eに接続されている。各単電池と各電池接続用具とを接続する方法は、例えば、前述の実施形態1および2で示した方法と同様である。単電池161aの負極162aは、例えば、電池接続用具10aの接続端子13aを用いて、外部付加の出力端(外部端子)に接続可能である。単電池161eの正極163eは、例えば、電池接続用具10bの接続端子13bを用いて、外部付加の入力端(外部端子)に接続可能である。 The five cells are arranged in a staggered manner. The five cells are fixed by a frame (holder) not shown so as not to move. The positive electrode 163a of the unit cell 161a and the negative electrode 162b of the unit cell 161b are connected in series by the battery connection tool 130a. The positive electrode 163b of the unit cell 161b and the negative electrode 162c of the unit cell 161c are connected in series by the battery connection tool 130b. The positive electrode 163c of the unit cell 161c and the negative electrode 162d of the unit cell 161d are connected in series by the battery connection tool 130c. The positive electrode 163d of the unit cell 161d and the negative electrode 162e of the unit cell 161e are connected in series by the battery connection tool 130d. The battery connection tool 10a is connected to the negative electrode 162a of the unit cell 161a corresponding to one end of the assembled battery module 160. The battery connection tool 10b is connected to the positive electrode 163e of the unit cell 161e corresponding to the other end of the assembled battery module 160. The method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example. The negative electrode 162a of the unit cell 161a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13a of the battery connection tool 10a. The positive electrode 163e of the unit cell 161e can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13b of the battery connection tool 10b.
 本実施形態の組電池モジュールでは、前述のとおり、本発明の電池接続用具を用いているため、単電池の電極同士および単電池と前記外部端子とが、耐振性に優れ、充放電時の発熱にも左右されない状態で極めて良好に、電気的に接続可能である。この結果、本実施形態の組電池モジュールでは、単電池の電極同士および単電池と外部端子との間における各電気的接続の信頼性および安定性が保持される。 In the assembled battery module of this embodiment, as described above, since the battery connection tool of the present invention is used, the electrodes of the unit cells and the unit cell and the external terminal are excellent in vibration resistance, and generate heat during charging and discharging. It is possible to make an electrical connection very well without being affected by the above. As a result, in the assembled battery module of this embodiment, the reliability and stability of each electrical connection between the electrodes of the unit cells and between the unit cells and the external terminals are maintained.
 本発明の組電池モジュールにおいて、単電池は、特に制限されず、例えば、一次電池、二次電池等があげられる。これらの中でも、二次電池が好ましい。前記二次電池としては、例えば、リチウムイオン電池、ニッケルカドミウム蓄電池、ニッケル水素電池等があげられる。これらの中でも、リチウムイオン電池が特に好ましい。 In the assembled battery module of the present invention, the unit cell is not particularly limited, and examples thereof include a primary battery and a secondary battery. Among these, a secondary battery is preferable. Examples of the secondary battery include a lithium ion battery, a nickel cadmium storage battery, and a nickel hydrogen battery. Among these, a lithium ion battery is particularly preferable.
 本実施形態の組電池モジュールでは、前述のとおり、5本の単電池が千鳥状に配置されているが、本発明は、この例に限定されない。例えば、図17に示すように、単電池は直線状に配置されていてもよい。図17において、(a)は単電池が直線状に配置されている組電池モジュールの平面図、(b)は同組電池モジュールを、(a)とは反対側から見た平面図である。前記両図に示すとおり、この組電池モジュール170は、6本の単電池171a、171b、171c、171d、171eおよび171fと、2個の電池接続用具10cおよび10dと、5個の電池接続用具130e、130f、130g、130hおよび130iとを含む。電池接続用具10cおよび10dは、実施形態1で示した電池接続用具である。電池接続用具130e、130f、130g、130hおよび130iは、実施形態2で示した電池接続用具である。 In the assembled battery module of the present embodiment, as described above, five unit cells are arranged in a staggered manner, but the present invention is not limited to this example. For example, as shown in FIG. 17, the cells may be arranged in a straight line. 17, (a) is a plan view of the assembled battery module in which the cells are arranged in a straight line, and (b) is a plan view of the assembled battery module as viewed from the side opposite to (a). As shown in both the drawings, this assembled battery module 170 includes six unit cells 171a, 171b, 171c, 171d, 171e and 171f, two battery connection tools 10c and 10d, and five battery connection tools 130e. , 130f, 130g, 130h and 130i. Battery connection tools 10c and 10d are the battery connection tools shown in the first embodiment. Battery connection tools 130e, 130f, 130g, 130h and 130i are the battery connection tools shown in the second embodiment.
 前記6本の単電池は、3本の単電池が直線状に並び、これが2本並列して配置されている。前記6本の単電池は、図示しない枠体(ホルダ)で遊動しないように固定されている。単電池171aの正極173aと単電池171bの負極172bとは、電池接続用具130eにより直列に接続されている。単電池171bの正極173bと単電池171cの負極172cとは、電池接続用具130fにより直列に接続されている。単電池171cの正極173cと単電池171dの負極172dとは、電池接続用具130gにより直列に接続されている。単電池171dの正極173dと単電池171eの負極172eとは、電池接続用具130hにより直列に接続されている。単電池171eの正極173eと単電池171fの負極172fとは、電池接続用具130iにより直列に接続されている。電池接続用具10cは、この組電池モジュール170の一方の端部に相当する単電池171aの負極172aに接続されている。電池接続用具10dは、この組電池モジュール170の他方の端部である単電池171fの正極173fに接続されている。各単電池と各電池接続用具とを接続する方法は、例えば、前述の実施形態1および2で示した方法と同様である。単電池171aの負極172aは、例えば、電池接続用具10cの接続端子13cを用いて、外部付加の出力端(外部端子)に接続可能である。単電池171fの正極173fは、例えば、電池接続用具10dの接続端子13dを用いて、外部付加の入力端(外部端子)に接続可能である。なお、図面を見やすくするために、図17(a)において、図17(b)側に見える電極に接続される電池接続用具の各キャップ部分は、図示を省略している。また、図17(b)において、図17(a)側に見える電極に接続される電池接続用具の各キャップ部分は、図示を省略している。 The six single cells have three single cells arranged in a straight line, and two of these are arranged in parallel. The six cells are fixed by a frame (holder) not shown so as not to float. The positive electrode 173a of the unit cell 171a and the negative electrode 172b of the unit cell 171b are connected in series by the battery connection tool 130e. The positive electrode 173b of the unit cell 171b and the negative electrode 172c of the unit cell 171c are connected in series by the battery connection tool 130f. The positive electrode 173c of the unit cell 171c and the negative electrode 172d of the unit cell 171d are connected in series by the battery connection tool 130g. The positive electrode 173d of the unit cell 171d and the negative electrode 172e of the unit cell 171e are connected in series by the battery connection tool 130h. The positive electrode 173e of the single battery 171e and the negative electrode 172f of the single battery 171f are connected in series by the battery connection tool 130i. The battery connection tool 10 c is connected to the negative electrode 172 a of the unit cell 171 a corresponding to one end of the assembled battery module 170. The battery connection tool 10d is connected to the positive electrode 173f of the unit cell 171f which is the other end of the assembled battery module 170. The method of connecting each cell and each battery connecting tool is the same as the method shown in the first and second embodiments, for example. The negative electrode 172a of the unit cell 171a can be connected to an externally added output terminal (external terminal) using, for example, the connection terminal 13c of the battery connection tool 10c. The positive electrode 173f of the unit cell 171f can be connected to an externally added input terminal (external terminal) using, for example, the connection terminal 13d of the battery connection tool 10d. Note that, in order to make the drawing easier to see, in FIG. 17A, the cap portions of the battery connection tool connected to the electrodes visible on the side of FIG. 17B are not shown. Moreover, in FIG.17 (b), each cap part of the battery connection tool connected to the electrode visible to the Fig.17 (a) side is abbreviate | omitting illustration.
 このような構成であっても、前述の組電池モジュール160と同様の効果を得ることができる。 Even with such a configuration, the same effect as that of the assembled battery module 160 described above can be obtained.
〔実施形態4〕
 本実施形態の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両電極取付部が正極用取付部であることを特徴とする。
[Embodiment 4]
The battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are positive electrode mounting portions. To do.
 図18に、本実施形態の電池接続用具の一例の構成を示す。図18において、(a)は本実施形態の電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のU-U方向に見た断面図である。図18に示すとおり、この電池接続用具180は、正極用キャップ181と、正極用キャップ182と、接続端子183aとを含む。接続端子183aは、正極用キャップ181と正極用キャップ182とに接続されている。正極用キャップ181は、円形のプレート181aと、3本の爪181bとを含む。3本の爪181bは、プレート181aの縁部に、相互に間隔をおいて設けられている。正極用キャップ182は、円形のプレート182aと、3本の爪182bとを有する。3本の爪182bは、プレート182aの縁部に、相互に間隔をおいて設けられている。プレート181a表面の中央付近に、接続端子183aが接続されている向きと直交する向きに長孔のスリット184aが形成されている。プレート182a表面の中央付近に、接続端子183aが接続されている向きと直交する向きに長孔のスリット184bが形成されている。 FIG. 18 shows an example of the configuration of the battery connection tool of the present embodiment. 18A is a perspective view of the battery connection tool of this embodiment, FIG. 18B is a top view of the battery connection tool, FIG. 18C is a bottom view of the battery connection tool, and FIG. It is sectional drawing seen in the U direction. As shown in FIG. 18, the battery connection tool 180 includes a positive electrode cap 181, a positive electrode cap 182, and a connection terminal 183 a. The connection terminal 183 a is connected to the positive electrode cap 181 and the positive electrode cap 182. The positive electrode cap 181 includes a circular plate 181a and three claws 181b. The three claws 181b are provided at intervals on the edge of the plate 181a. The positive electrode cap 182 includes a circular plate 182a and three claws 182b. The three claws 182b are provided at intervals on the edge of the plate 182a. In the vicinity of the center of the surface of the plate 181a, an elongated slit 184a is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected. In the vicinity of the center of the surface of the plate 182a, an elongated slit 184b is formed in a direction orthogonal to the direction in which the connection terminal 183a is connected.
 つぎに、図19を参照して、本実施形態の電池接続用具の2本の単電池の正極への接続を説明する。図19(c)は、図19(b)に示す接続状態のV-V方向に見た断面図である。 Next, with reference to FIG. 19, the connection of the battery connecting tool of this embodiment to the positive electrodes of the two unit cells will be described. FIG. 19C is a cross-sectional view in the VV direction of the connected state shown in FIG.
 まず、図19(a)に示すように、電池接続用具180と、2本の円筒形の単電池191aおよび191bとを準備する。つぎに、正極用キャップ181および182を吸引または磁石で保持できる治具または工具(図示せず)を用いて、プレート181aの中心と一方の単電池191aの正極193aの中心とが合わさるように、正極用キャップ181を単電池191aの上方に位置させる。同時に、プレート182aの中心と他方の単電池191bの正極193bの中心とが合わさるように、正極用キャップ182を単電池191bの上方に位置させる。この状態から、正極用キャップ181および182を下方に移動させる。これにより、正極用キャップ181の3本の爪181bの間に単電池191aの正極193aを嵌入して、正極用キャップ181を単電池191aの正極193aにかぶせる。このようにして、電極接触部であるプレート181aが単電池191aの正極193aの上面上に配置されることで、本実施形態の電池接続用具を一方の円筒形の単電池の正極に電気的に接続することができる。また、固定部である爪181bが正極193aの側面上に配置されることで、本実施形態の電池接続用具を、一方の円筒形の単電池の正極に物理的に接続することができる。同時に、正極用キャップ182の3本の爪182bの間に単電池191bの正極193bを嵌入して、正極用キャップ182を単電池191bの正極193bにかぶせる。このようにして、電極接触部であるプレート182aが単電池191bの正極193bの上面上に配置されることで、本実施形態の電池接続用具を他方の円筒形の単電池の正極に電気的に接続することができる。また、固定部である爪182bが正極193bの側面上に配置されることで、本実施形態の電池接続用具を、他方の円筒形の単電池の正極に物理的に接続することができる。 First, as shown in FIG. 19A, a battery connection tool 180 and two cylindrical unit cells 191a and 191b are prepared. Next, using a jig or tool (not shown) that can attract or hold the positive electrode caps 181 and 182 with a magnet, the center of the plate 181a and the center of the positive electrode 193a of one unit cell 191a are aligned. The positive electrode cap 181 is positioned above the unit cell 191a. At the same time, the positive electrode cap 182 is positioned above the unit cell 191b so that the center of the plate 182a and the center of the cathode 193b of the other unit cell 191b are aligned. From this state, the positive electrode caps 181 and 182 are moved downward. As a result, the positive electrode 193a of the cell 191a is fitted between the three claws 181b of the positive electrode cap 181 and the positive electrode cap 181 is placed over the positive electrode 193a of the cell 191a. Thus, the plate 181a which is an electrode contact part is arrange | positioned on the upper surface of the positive electrode 193a of the cell 191a, and the battery connection tool of this embodiment is electrically connected to the positive electrode of one cylindrical cell. Can be connected. Moreover, the nail | claw 181b which is a fixing | fixed part is arrange | positioned on the side surface of the positive electrode 193a, Therefore The battery connection tool of this embodiment can be physically connected to the positive electrode of one cylindrical cell. At the same time, the positive electrode 193b of the single cell 191b is fitted between the three claws 182b of the positive electrode cap 182, and the positive electrode cap 182 is placed over the positive electrode 193b of the single cell 191b. Thus, the plate 182a which is an electrode contact part is arrange | positioned on the upper surface of the positive electrode 193b of the single battery 191b, and the battery connection tool of this embodiment is electrically connected to the positive electrode of the other cylindrical single battery. Can be connected. Moreover, the nail | claw 182b which is a fixing | fixed part is arrange | positioned on the side surface of the positive electrode 193b, Therefore The battery connection tool of this embodiment can be physically connected to the positive electrode of the other cylindrical unit cell.
 この状態で、かしめ用の治具(図示せず)を用いて、爪181bの所望の位置をライン状にかしめることにより(図19(b)および図19(c)におけるかしめ部194a)、固定部である爪181bの一部を単電池191aの電極(正極193a)の側面に食い込ませる。このようにして、正極用キャップ181を単電池191aの正極193aに冠着する。このように、固定部である爪181bが単電池191aの電極(正極193a)の側面上に配置されることで、本実施形態の電池接続用具を、一方の円筒形の単電池の正極に物理的に強固に接続することができる。一方、かしめ用の治具(図示せず)を用いて、爪182bの所望の位置をライン状にかしめることにより(図19(b)および図19(c)におけるかしめ部194b)、固定部である爪182bの一部を単電池191bの電極(正極193b)の側面に食い込ませる。このようにして、正極用キャップ182を単電池191bの正極193bに冠着する。このように、固定部である爪182bが単電池191bの電極(正極193b)の側面上に配置されることで、本実施形態の電池接続用具を、他方の円筒形の単電池の正極に物理的に強固に接続することができる。爪181bおよび182bをかしめる方法は、例えば、実施形態1で示した方法と同様である。この状態で、さらに、スリット184aを挟んで抵抗溶接することで、正極用キャップ181と単電池191aの正極193aとを溶接接続する(図19(c)における溶接部195a)。一方、スリット184bを挟んで抵抗溶接することで、正極用キャップ182と単電池191bの正極193bとを溶接接続する(図19(c)における溶接部195b)。なお、前述のとおり、抵抗溶接等の溶接接続を必ずしも行う必要はない。 In this state, a desired position of the claw 181b is caulked in a line using a caulking jig (not shown) (caulking portion 194a in FIGS. 19B and 19C), A part of the claw 181b, which is a fixed part, is bitten into the side surface of the electrode (positive electrode 193a) of the unit cell 191a. In this manner, the positive electrode cap 181 is attached to the positive electrode 193a of the unit cell 191a. As described above, the claw 181b, which is the fixing portion, is arranged on the side surface of the electrode (positive electrode 193a) of the unit cell 191a, so that the battery connection tool of this embodiment is physically applied to the positive electrode of one cylindrical unit cell. Can be firmly connected. On the other hand, by using a caulking jig (not shown), the desired position of the claw 182b is caulked in a line (caulking portion 194b in FIGS. 19B and 19C), thereby fixing the fixing portion. A part of the claw 182b is bitten into the side surface of the electrode (positive electrode 193b) of the unit cell 191b. In this manner, the positive electrode cap 182 is attached to the positive electrode 193b of the unit cell 191b. In this way, the claw 182b, which is a fixing portion, is arranged on the side surface of the electrode (positive electrode 193b) of the unit cell 191b, so that the battery connection tool of this embodiment is physically connected to the positive electrode of the other cylindrical unit cell. Can be firmly connected. The method for caulking the claws 181b and 182b is the same as the method shown in the first embodiment, for example. In this state, the positive electrode cap 181 and the positive electrode 193a of the unit cell 191a are further weld-connected by resistance welding with the slit 184a interposed therebetween (welded portion 195a in FIG. 19C). On the other hand, the positive electrode cap 182 and the positive electrode 193b of the unit cell 191b are welded and connected by resistance welding with the slit 184b interposed therebetween (welded portion 195b in FIG. 19C). As described above, welding connection such as resistance welding is not necessarily performed.
 このようにすることで、本実施形態の電池接続用具を、2本の円筒形の単電池における両方の正極に、電気的に接続し、かつ、物理的に強固に接続することができる。この結果、単電池191aの正極193aと単電池191bの正極193bとが、本実施形態の電池接続用具により並列に接続され、かつ、物理的に強固に接続される。したがって、本実施形態の電池接続用具は、例えば、組電池モジュールにおける2本の単電池の正極同士の並列接続に好適に用いることができる。これにより、2本の円筒形の単電池の正極同士の並列接続において、振動または充放電時に発する熱による電極と接続端子との間の接続不良の発生を防ぐことができ、単電池を組み合わせて組電池モジュールを構成するのに際して、各電気的接続の信頼性および安定性を保持することができる。なお、本発明の電池接続用具の用途は、上記記載により制限ないし限定されない。 By doing in this way, the battery connection tool of this embodiment can be electrically connected to both positive electrodes in the two cylindrical unit cells, and can be physically firmly connected. As a result, the positive electrode 193a of the single battery 191a and the positive electrode 193b of the single battery 191b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of this embodiment can be suitably used for, for example, parallel connection of the positive electrodes of two unit cells in an assembled battery module. Thereby, in the parallel connection between the positive electrodes of two cylindrical unit cells, it is possible to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and combining the unit cells When configuring the assembled battery module, the reliability and stability of each electrical connection can be maintained. In addition, the use of the battery connection tool of the present invention is not limited or limited by the above description.
〔実施形態5〕
 本実施形態の電池接続用具は、二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両電極取付部が負極用取付部であることを特徴とする。
[Embodiment 5]
The battery connection tool of the present embodiment includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminals, and both the electrode mounting portions are negative electrode mounting portions. To do.
 図20に、本実施形態の電池接続用具の一例の構成を示す。図20において、(a)は本実施形態の電池接続用具の斜視図、(b)は同上面図、(c)は同下面図、(d)は(a)に示す電池接続用具のW-W方向に見た断面図である。図20に示すとおり、この電池接続用具200は、負極用キャップ201と、負極用キャップ202と、接続端子203aとを含む。接続端子203aは、負極用キャップ201と負極用キャップ202とに接続されている。負極用キャップ201は、円形のプレート201aと、3本の爪201bとを含む。3本の爪201bは、プレート201aの縁部に、相互に間隔をおいて設けられている。負極用キャップ202は、円形のプレート202aと、3本の爪202bとを含む。3本の爪201bは、プレート201aの縁部に、相互に間隔をおいて設けられている。プレート201a表面の中央付近に、接続端子203aが接続されている向きと直交する向きに長孔のスリット204aが形成されている。プレート202a表面の中央付近に、接続端子203aが接続されている向きと直交する向きに長孔のスリット204bが形成されている。 FIG. 20 shows a configuration of an example of the battery connection tool of the present embodiment. 20, (a) is a perspective view of the battery connection tool of the present embodiment, (b) is a top view thereof, (c) is a bottom view thereof, and (d) is a W-- of the battery connection tool shown in (a). It is sectional drawing seen in the W direction. As shown in FIG. 20, the battery connection tool 200 includes a negative electrode cap 201, a negative electrode cap 202, and a connection terminal 203a. The connection terminal 203 a is connected to the negative electrode cap 201 and the negative electrode cap 202. The negative electrode cap 201 includes a circular plate 201a and three claws 201b. The three claws 201b are provided at the edge of the plate 201a with a space between each other. The negative electrode cap 202 includes a circular plate 202a and three claws 202b. The three claws 201b are provided at the edge of the plate 201a with a space between each other. In the vicinity of the center of the surface of the plate 201a, an elongated slit 204a is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected. In the vicinity of the center of the surface of the plate 202a, an elongated slit 204b is formed in a direction orthogonal to the direction in which the connection terminal 203a is connected.
 つぎに、図21を参照して、本実施形態の電池接続用具の2本の単電池の負極への接続を説明する。図21(c)は、図21(b)に示す接続状態のX-X方向に見た断面図である。 Next, with reference to FIG. 21, the connection to the negative electrode of two unit cells of the battery connection tool of this embodiment will be described. FIG. 21C is a cross-sectional view of the connection state shown in FIG. 21B viewed in the XX direction.
 まず、図21(a)に示すように、電池接続用具200と、2本の円筒形の単電池211aおよび211bとを準備する。つぎに、負極用キャップ201および202を吸引または磁石で保持できる治具または工具(図示せず)を用いて、プレート201aの中心と一方の単電池211aの負極212aの中心とが合わさるように、負極用キャップ201を単電池211aの上方に位置させる。同時に、プレート202aの中心と他方の単電池211bの負極212bの中心とが合わさるように、負極用キャップ202を単電池211bの上方に位置させる。この状態から、負極用キャップ201および202を下方に移動させる。これにより、負極用キャップ201の3本の爪201bの間に単電池211aの負極212aを嵌入して、負極用キャップ201を単電池211aの負極212aにかぶせる。このようにして、電極接触部であるプレート201aが単電池211aの負極212aの上面上に配置されることで、本実施形態の電池接続用具を一方の円筒形の単電池の負極に電気的に接続することができる。また、固定部である爪201bが負極212aの側面上に配置されることで、本実施形態の電池接続用具を、一方の円筒形の単電池の負極に物理的に接続することができる。同時に、一方、負極用キャップ202の3本の爪202bの間に単電池211bの負極212bを嵌入して、負極用キャップ202を単電池211bの負極212bにかぶせる。このようにして、電極接触部であるプレート202aが単電池211bの負極212bの上面上に配置されることで、本実施形態の電池接続用具を他方の円筒形の単電池の負極に電気的に接続することができる。また、固定部である爪202bが負極212bの側面上に配置されることで、本実施形態の電池接続用具を、他方の円筒形の単電池の負極に物理的に接続することができる。 First, as shown in FIG. 21A, a battery connecting tool 200 and two cylindrical unit cells 211a and 211b are prepared. Next, using a jig or tool (not shown) that can attract or hold the negative electrode caps 201 and 202 with a magnet, the center of the plate 201a and the center of the negative electrode 212a of one unit cell 211a are aligned. The negative electrode cap 201 is positioned above the unit cell 211a. At the same time, the negative electrode cap 202 is positioned above the unit cell 211b so that the center of the plate 202a and the center of the anode 212b of the other unit cell 211b are aligned. From this state, the negative electrode caps 201 and 202 are moved downward. As a result, the negative electrode 212a of the unit cell 211a is inserted between the three claws 201b of the negative electrode cap 201, and the negative electrode cap 201 is placed over the negative electrode 212a of the unit cell 211a. Thus, the plate 201a which is an electrode contact part is arrange | positioned on the upper surface of the negative electrode 212a of the cell 211a, and the battery connection tool of this embodiment is electrically connected to the negative electrode of one cylindrical cell. Can be connected. Moreover, the nail | claw 201b which is a fixing | fixed part is arrange | positioned on the side surface of the negative electrode 212a, Therefore The battery connection tool of this embodiment can be physically connected to the negative electrode of one cylindrical cell. At the same time, the negative electrode 212b of the cell 211b is inserted between the three claws 202b of the negative electrode cap 202, and the negative electrode cap 202 is placed over the negative electrode 212b of the cell 211b. Thus, the plate 202a which is an electrode contact part is arrange | positioned on the upper surface of the negative electrode 212b of the cell 211b, and the battery connection tool of this embodiment is electrically connected to the negative electrode of the other cylindrical cell. Can be connected. Moreover, the nail | claw 202b which is a fixing | fixed part is arrange | positioned on the side surface of the negative electrode 212b, Therefore The battery connection tool of this embodiment can be physically connected to the negative electrode of the other cylindrical cell.
 この状態で、かしめ用の治具(図示せず)を用いて、爪201bの所望の位置をライン状にかしめることにより(図21(b)および図21(c)におけるかしめ部214a)、固定部である爪201bの一部を単電池211aの電池本体(負極212a)の側面に食い込ませる。このようにして、負極用キャップ201を単電池211aの負極212aに冠着する。このように、固定部である爪201bが単電池211aの電池本体(負極212a)の側面上に配置されることで、本実施形態の電池接続用具を、一方の円筒形の単電池の負極に物理的に強固に接続することができる。一方、かしめ用の治具(図示せず)を用いて、爪202bの所望の位置をライン状にかしめることにより(図21(b)および図21(c)におけるかしめ部214b)、固定部である爪202bの一部を単電池211bの電池本体(負極212b)の側面に食い込ませる。このようにして、負極用キャップ202を単電池211bの負極212bに冠着する。このように、固定部である爪202bが単電池211bの電池本体(負極212b)の側面上に配置されることで、本実施形態の電池接続用具を、他方の円筒形の単電池の負極に物理的に強固に接続することができる。爪201bおよび202bをかしめる方法は、例えば、実施形態1で示した方法と同様である。この状態で、さらに、スリット204aを挟んで抵抗溶接することで、負極用キャップ201と単電池211aの負極212aとを溶接接続する(図21(c)における溶接部215a)。一方、スリット204bを挟んで抵抗溶接することで、負極用キャップ202と単電池211bの負極212bとを溶接接続する(図21(c)における溶接部215b)。なお、前述のとおり、抵抗溶接等の溶接接続を必ずしも行う必要はない。 In this state, a desired position of the claw 201b is caulked in a line using a caulking jig (not shown) (caulking portion 214a in FIGS. 21 (b) and 21 (c)), A part of the claw 201b, which is a fixing portion, is bitten into the side surface of the battery body (negative electrode 212a) of the single battery 211a. In this manner, the negative electrode cap 201 is attached to the negative electrode 212a of the unit cell 211a. In this way, the claw 201b, which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212a) of the unit cell 211a, so that the battery connection tool of this embodiment can be used as the negative electrode of one cylindrical unit cell. It can be physically and firmly connected. On the other hand, by using a caulking jig (not shown), the desired position of the claw 202b is caulked in a line (the caulking portion 214b in FIGS. 21B and 21C), thereby fixing the fixing portion. A part of the claw 202b is bitten into the side surface of the battery body (negative electrode 212b) of the unit cell 211b. In this way, the negative electrode cap 202 is attached to the negative electrode 212b of the unit cell 211b. In this way, the claw 202b, which is a fixing portion, is arranged on the side surface of the battery body (negative electrode 212b) of the unit cell 211b, so that the battery connection tool of this embodiment can be used as the negative electrode of the other cylindrical unit cell. It can be physically and firmly connected. The method of caulking the claws 201b and 202b is the same as the method shown in the first embodiment, for example. In this state, the negative electrode cap 201 and the negative electrode 212a of the cell 211a are further welded and connected by resistance welding with the slit 204a interposed therebetween (welded portion 215a in FIG. 21C). On the other hand, the negative electrode cap 202 and the negative electrode 212b of the unit cell 211b are welded and connected by resistance welding with the slit 204b interposed therebetween (welded portion 215b in FIG. 21C). As described above, welding connection such as resistance welding is not necessarily performed.
 このようにすることで、本実施形態の電池接続用具を、2本の円筒形の単電池における両方の負極に、電気的に接続し、かつ、物理的に強固に接続することができる。この結果、単電池211aの負極212aと単電池211bの負極212bとが、本実施形態の電池接続用具により並列に接続され、かつ、物理的に強固に接続される。したがって、本実施形態の電池接続用具は、例えば、組電池モジュールにおける2本の単電池の負極同士の並列接続に好適に用いることができる。これにより、2本の円筒形の単電池の負極同士の並列接続において、振動または充放電時に発する熱による電極と接続端子との間の接続不良の発生を防ぐことができ、単電池と組み合わせて組電池モジュールを構成するのに際して、各電気的接続の信頼性および安定性を保持することができる。なお、本発明の電池接続用具の用途は、上記記載により制限ないし限定されない。 By doing in this way, the battery connection tool of this embodiment can be electrically connected to both negative electrodes in the two cylindrical unit cells, and can be physically firmly connected. As a result, the negative electrode 212a of the unit cell 211a and the negative electrode 212b of the unit cell 211b are connected in parallel by the battery connection tool of the present embodiment and are physically firmly connected. Therefore, the battery connection tool of the present embodiment can be suitably used, for example, for parallel connection of the negative electrodes of two unit cells in an assembled battery module. As a result, in the parallel connection of the negative electrodes of two cylindrical unit cells, it is possible to prevent the occurrence of connection failure between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, in combination with the unit cell. When configuring the assembled battery module, the reliability and stability of each electrical connection can be maintained. In addition, the use of the battery connection tool of the present invention is not limited or limited by the above description.
〔実施形態6〕
 本実施形態の組電池モジュールは、2本以上の単電池の接続に、実施形態2、実施形態4および実施形態5で示した電池接続用具を用いていることを特徴とする。
[Embodiment 6]
The assembled battery module of the present embodiment is characterized in that the battery connection tool shown in the second, fourth, and fifth embodiments is used to connect two or more unit cells.
 図22に、本実施形態の組電池モジュールの一例の構成を示す。図22において、(a)は本実施形態の組電池モジュールの平面図、(b)は同組電池モジュールを、(a)とは反対側から見た平面図である。前記両図に示すとおり、この組電池モジュール220は、2個の組電池モジュール160aおよび160bと、電池接続用具180および200とを含む。2個の組電池モジュール160aおよび160bは、実施形態3(図16)で示した組電池モジュールであり、図示しない枠体(ホルダ)で遊動しないように固定されている。電池接続用具180は、実施形態4で示した電池接続用具である(図18)。電池接続用具200は、実施形態5で示した電池接続用具である(図20)。なお、図面を見やすくするために、図22(a)において、図22(b)側に見える電極に接続される各電池接続用具のキャップ部分は、図示を省略している。また、図22(b)において、図22(a)側に見える電極に接続される各電池接続用具のキャップ部分は、図示を省略している。 FIG. 22 shows an exemplary configuration of the assembled battery module of the present embodiment. 22A is a plan view of the assembled battery module of the present embodiment, and FIG. 22B is a plan view of the assembled battery module as viewed from the opposite side to FIG. As shown in both the drawings, the assembled battery module 220 includes two assembled battery modules 160a and 160b and battery connecting tools 180 and 200. The two assembled battery modules 160a and 160b are the assembled battery modules shown in the third embodiment (FIG. 16), and are fixed so as not to float by a frame (holder) (not shown). The battery connection tool 180 is the battery connection tool shown in the fourth embodiment (FIG. 18). The battery connection tool 200 is the battery connection tool shown in the fifth embodiment (FIG. 20). In order to make the drawing easy to see, in FIG. 22A, the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22B is not shown. Also, in FIG. 22B, the cap portion of each battery connection tool connected to the electrode visible on the side of FIG. 22A is not shown.
 両組電池モジュールの単電池161a-1および161a-2における負極162a-1および162a-2は、実施形態3における電池接続用具10aに代えて、電池接続用具200により並列に接続されている。両組電池モジュールの単電池161e-1および161e-2における正極163e-1および163e-2は、実施形態3における電池接続用具10bに代えて、電池接続用具180により並列に接続されている。このようにすることで、組電池モジュール160aおよび160bは、並列に接続されている。各単電池と各電池接続用具とを接続する方法は、例えば、前述の実施形態2、4および5で示した方法と同様である。両組電池モジュールの単電池161a-1および161a-2における負極162a-1および162a-2は、例えば、電池接続用具200の接続端子を介して、外部付加の出力端(外部端子)に接続可能である。両組電池モジュールの単電池161e-1および161e-2における正極163e-1および163e-2は、例えば、電池接続用具180の接続端子を介して、外部付加の入力端(外部端子)に接続可能である。 The negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both assembled battery modules are connected in parallel by the battery connecting tool 200 instead of the battery connecting tool 10a in the third embodiment. The positive electrodes 163e-1 and 163e-2 in the unit cells 161e-1 and 161e-2 of both assembled battery modules are connected in parallel by a battery connecting tool 180 instead of the battery connecting tool 10b in the third embodiment. By doing in this way, the assembled battery modules 160a and 160b are connected in parallel. The method of connecting each single cell and each battery connection tool is the same as the method shown in the above-described Embodiments 2, 4, and 5, for example. The negative electrodes 162a-1 and 162a-2 in the unit cells 161a-1 and 161a-2 of both battery modules can be connected to an externally added output terminal (external terminal) via the connection terminal of the battery connection tool 200, for example. It is. The positive electrodes 163e-1 and 163e-2 of the unit cells 161e-1 and 161e-2 of both battery modules can be connected to an externally added input terminal (external terminal) via the connection terminal of the battery connection tool 180, for example. It is.
 本実施形態の組電池モジュールは、前述の実施形態3に記載の組電池モジュール2個を並列に電気的に接続したものである。 The assembled battery module of this embodiment is obtained by electrically connecting two assembled battery modules described in the above-described Embodiment 3 in parallel.
 このように、本発明の電池接続用具を用いて構成された組電池モジュールを複数個用い、かつ、適宜直列または並列に電気的接続を行うことにより、例えば、前述の実施形態3に記載の組電池モジュールで設定された電圧・電力・電流の条件とは、その設定条件が異なる組電池モジュールを提供可能である。 As described above, by using a plurality of assembled battery modules configured using the battery connection tool of the present invention and electrically connecting them in series or in parallel as appropriate, for example, the assembly described in Embodiment 3 above. It is possible to provide an assembled battery module in which the setting conditions differ from the voltage / power / current conditions set in the battery module.
 以上のとおり、本発明の電池接続用具は、振動または充放電時に発する熱による電極と接続端子との間の接続不良の発生を防ぐことができ、組電池モジュールを構成するに際して、各電気的接続の信頼性および安定性を保持することができる。このため、本発明の電池接続用具を用いて接続した組電池モジュールは、例えば、各電気的接続の信頼性および安定性を保持される。したがって、本発明の組電池モジュールは、例えば、車載用予備電源、車載用太陽光発電用蓄電池等として使用することができる。また、その用途としては、例えば、電気自動車・ハイブリッド型自動車、各種電装設備、電動自転車、電動バイク、産業機械、ロボット等への駆動電源のような、集電効率を高めた出力性能が要求される部分への電源があげられる。ただし、その用途は制限されず、広い分野に適用可能である。 As described above, the battery connection tool of the present invention can prevent the occurrence of poor connection between the electrode and the connection terminal due to vibration or heat generated during charging and discharging, and each electrical connection when configuring the assembled battery module Reliability and stability can be maintained. For this reason, the assembled battery module connected using the battery connection tool of the present invention maintains the reliability and stability of each electrical connection, for example. Therefore, the assembled battery module of the present invention can be used as, for example, an in-vehicle standby power supply, an in-vehicle photovoltaic power storage battery, or the like. In addition, as its application, for example, output performance with improved current collection efficiency is required, such as a drive power source for electric vehicles / hybrid vehicles, various electrical equipment, electric bicycles, electric motorcycles, industrial machines, robots, etc. Power to the part to be raised. However, its use is not limited and can be applied to a wide range of fields.
10、10a、10b、10c、10d、30、50、70、90、110、130、130a、130b、130c、130d、130e、130f、130g、130h、130i、150、150c、180、200  電池接続用具
11、31、111  キャップ(電極取付部)
11a、111a、131a、132a、181a、182a、201a、202a  プレート(電極接触部)
11A、111A  プレートの電極接触面
11b、131b、132b、181b、182b、201b、202b  爪(固定部)
13、13a、13b、13c、13d、133、133a、133b、133c、153、183a、203a  接続端子
21、141a、141b、161a、161a-1、161a-2、161b、161c、161d、161e、161e-1、161e-2、171a、171b、171c、171d、171e、171f、191a、191b、211a、211b  単電池
22、142b、162a、162a-1、162a-2、162b、162c、162d、162e、172a、172b、172c、172d、172e、172f、212a、212b  負極
23、143a、163a、163b、163c、163d、163e、163e-1、163e-2、173a、173b、173c、173d、173e、173f、193a、193b  正極
24、25、44、144a、144b、194a、194b、214a、214b  かしめ部
31b  スカート(固定部)
54、134a、134b、184a、184b、204a、204b  スリット
61、81、145a、145b、195a、195b、215a、215b  溶接部
75   プロジェクション(突起部)
96、96A、96B、96C  針状突起(突起)
96a  バイト
96b  はんだ
96c  針
131、181、182  正極用キャップ(正極用取付部)
132、201、202  負極用キャップ(負極用取付部)
158  電圧監視端子
160、160a、160b、170、220  組電池モジュール
10, 10a, 10b, 10c, 10d, 30, 50, 70, 90, 110, 130, 130a, 130b, 130c, 130d, 130e, 130f, 130g, 130h, 130i, 150, 150c, 180, 200 Battery connection tool 11, 31, 111 Cap (electrode mounting part)
11a, 111a, 131a, 132a, 181a, 182a, 201a, 202a Plate (electrode contact part)
11A, 111A Plate electrode contact surface 11b, 131b, 132b, 181b, 182b, 201b, 202b Claw (fixing part)
13, 13a, 13b, 13c, 13d, 133, 133a, 133b, 133c, 153, 183a, 203a Connection terminals 21, 141a, 141b, 161a, 161a-1, 161a-2, 161b, 161c, 161d, 161e, 161e -1, 161e-2, 171a, 171b, 171c, 171d, 171e, 171f, 191a, 191b, 211a, 211b Unit cells 22, 142b, 162a, 162a-1, 162a-2, 162b, 162c, 162d, 162e, 172a, 172b, 172c, 172d, 172e, 172f, 212a, 212b Negative electrode 23, 143a, 163a, 163b, 163c, 163d, 163e, 163e-1, 163e-2, 173a, 173b, 173c, 173d, 173 , 173f, 193a, 193b cathode 24,25,44,144a, 144b, 194a, 194b, 214a, 214b crimped portion 31b skirt (fixing portion)
54, 134a, 134b, 184a, 184b, 204a, 204b Slit 61, 81, 145a, 145b, 195a, 195b, 215a, 215b Welded portion 75 Projection (projection)
96, 96A, 96B, 96C Needle-like protrusion (protrusion)
96a Bit 96b Solder 96c Needle 131, 181, 182 Cap for positive electrode (attachment portion for positive electrode)
132, 201, 202 Cap for negative electrode (attachment portion for negative electrode)
158 Voltage monitoring terminal 160, 160a, 160b, 170, 220 Assembly battery module

Claims (17)

  1. 電極取付部および接続端子を含み、
    前記接続端子が、前記電極取付部に接続され、
    前記電極取付部が、電極の上面上に配置される電極接触部と、電極の側面上または電池本体の側面上に配置される固定部とを含む、
    ことを特徴とする電池接続用具。
    Including electrode mounting part and connection terminal,
    The connection terminal is connected to the electrode mounting portion;
    The electrode mounting portion includes an electrode contact portion disposed on the upper surface of the electrode and a fixing portion disposed on the side surface of the electrode or the side surface of the battery body.
    The battery connection tool characterized by the above-mentioned.
  2. 前記電極接触部の縁部に、少なくとも二つの前記固定部が、相互に間隔をおいて設けられていることを特徴とする請求の範囲1記載の電池接続用具。 The battery connection tool according to claim 1, wherein at least two of the fixing portions are provided at an interval from each other at an edge portion of the electrode contact portion.
  3. 前記固定部が環状であって、前記電極接触部の縁部に、前記環状の固定部が設けられていることを特徴とする請求の範囲1記載の電池接続用具。 The battery connection tool according to claim 1, wherein the fixing portion is annular, and the annular fixing portion is provided at an edge of the electrode contact portion.
  4. 前記固定部の少なくとも一部が、電極の側面または電池本体の側面に食い込み可能であることを特徴とする請求の範囲1から3のいずれか一項に記載の電池接続用具。 4. The battery connection tool according to claim 1, wherein at least a part of the fixing portion can bite into a side surface of the electrode or a side surface of the battery main body. 5.
  5. 前記電極接触部が板状であり、前記電極接触部が、電極側に向かって凸状に湾曲していることを特徴とする請求の範囲1から4のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 4, wherein the electrode contact portion is plate-shaped, and the electrode contact portion is curved in a convex shape toward the electrode side. .
  6. 前記電極接触部の電極接触面に突起が形成されていることを特徴とする請求の範囲1から5のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 5, wherein a protrusion is formed on an electrode contact surface of the electrode contact portion.
  7. 前記電極接触部の電極接触面に、導電性樹脂層が形成されていることを特徴とする請求の範囲1から6のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 6, wherein a conductive resin layer is formed on an electrode contact surface of the electrode contact portion.
  8. さらに、電圧監視端子を含み、前記電圧監視端子が、前記接続端子に接続されていることを特徴とする請求の範囲1から7のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 7, further comprising a voltage monitoring terminal, wherein the voltage monitoring terminal is connected to the connection terminal.
  9. 二次電池接続用であることを特徴とする請求の範囲1から8のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 8, wherein the battery connection tool is used for connecting a secondary battery.
  10. 二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されていることを特徴とする請求の範囲1から9のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 9, comprising two electrode mounting portions, wherein the two electrode mounting portions are connected by the connection terminals.
  11. 二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、一方の前記電極取付部が単電池の正極に取り付け可能な電極取付部であり、他方の前記電極取付部が単電池の負極に取り付け可能な電極取付部であることを特徴とする請求の範囲1から10のいずれか一項に記載の電池接続用具。 Including the two electrode attachment portions, the two electrode attachment portions being connected by the connection terminal, one of the electrode attachment portions being an electrode attachment portion attachable to a positive electrode of a unit cell, and the other electrode The battery connecting tool according to any one of claims 1 to 10, wherein the attachment portion is an electrode attachment portion that can be attached to a negative electrode of a single battery.
  12. 二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両方の電極取付部が単電池の正極に取り付け可能な電極取付部であることを特徴とする請求の範囲1から10のいずれか一項に記載の電池接続用具。 It includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminal, and both the electrode mounting portions are electrode mounting portions that can be mounted on a positive electrode of a unit cell. The battery connection tool according to any one of claims 1 to 10.
  13. 二つの前記電極取付部を含み、前記二つの電極取付部が前記接続端子で接続されており、前記両方の電極取付部が単電池の負極に取り付け可能な電極取付部であることを特徴とする請求の範囲1から10のいずれか一項に記載の電池接続用具。 It includes two electrode mounting portions, the two electrode mounting portions are connected by the connection terminal, and both the electrode mounting portions are electrode mounting portions that can be mounted on the negative electrode of the unit cell. The battery connection tool according to any one of claims 1 to 10.
  14. 前記電極取付部が一つであり、前記接続端子が、外部端子との接続用の接続端子であることを特徴とする請求の範囲1から9のいずれか一項に記載の電池接続用具。 The battery connection tool according to any one of claims 1 to 9, wherein the number of the electrode attachment portions is one, and the connection terminal is a connection terminal for connection to an external terminal.
  15. 二つ以上の電池を接続した組電池モジュールであって、前記二つ以上の電池の接続に、請求の範囲10から13のいずれか一項に記載の電池接続用具を用いたことを特徴とする組電池モジュール。 An assembled battery module in which two or more batteries are connected, wherein the battery connecting tool according to any one of claims 10 to 13 is used to connect the two or more batteries. Battery module.
  16. 少なくとも一つの電池の電極が外部端子に接続可能であり、前記外部端子との接続に、請求の範囲14記載の電池接続用具を用いたことを特徴とする請求の範囲15記載の組電池モジュール。 16. The assembled battery module according to claim 15, wherein at least one electrode of the battery is connectable to an external terminal, and the battery connection tool according to claim 14 is used for connection with the external terminal.
  17. 前記電池が二次電池であることを特徴とする請求の範囲15または16記載の組電池モジュール。 The assembled battery module according to claim 15 or 16, wherein the battery is a secondary battery.
PCT/JP2011/055445 2010-03-10 2011-03-09 Battery connecting tool and battery pack module using same WO2011111721A1 (en)

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FR2979472A1 (en) * 2011-08-29 2013-03-01 Batscap Sa CONNECTOR ARRANGED BETWEEN TWO ENERGY STORAGE ASSEMBLIES
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