WO2012164837A1 - Power supply apparatus - Google Patents

Power supply apparatus Download PDF

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Publication number
WO2012164837A1
WO2012164837A1 PCT/JP2012/003111 JP2012003111W WO2012164837A1 WO 2012164837 A1 WO2012164837 A1 WO 2012164837A1 JP 2012003111 W JP2012003111 W JP 2012003111W WO 2012164837 A1 WO2012164837 A1 WO 2012164837A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
power supply
assembled battery
battery
supply device
Prior art date
Application number
PCT/JP2012/003111
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French (fr)
Japanese (ja)
Inventor
細谷　直人
仰 奥谷
Original Assignee
パナソニック株式会社
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Filing date
Publication date
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Publication of WO2012164837A1 publication Critical patent/WO2012164837A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries

Definitions

  • the present invention relates to a power supply device, and more particularly to a power supply device in which assembled batteries including a plurality of single cells are electrically connected to each other.
  • an object of the present invention is to increase the energy density of a power supply device by reducing the volume of an electrical connection portion of a battery unit (assembled battery) and to easily perform electrical connection between assembled batteries. .
  • the assembled battery B includes a plurality of cylindrical unit cells b, an electrode plate ⁇ -1 disposed at the top of the unit cell b, and an electrode plate ⁇ -2 disposed at the bottom of the unit cell b.
  • the bus bar connects the electrode plate ⁇ -1 disposed at the top of the unit cell a and the electrode plate ⁇ -2 disposed at the bottom of the unit cell b, according to [1].
  • [3] The power supply device according to [1] or [2], wherein at least a part of the bus bar is disposed in a gap between the cells b of the assembled battery B.
  • the power supply device according to [1] or [2], wherein the bus bar is copper, iron, nickel, aluminum, or an alloy thereof, or a multilayer plywood containing them.
  • the bus bar is a solid bar having an outer diameter of ⁇ 5 to 20 mm.
  • the bus bar is a hollow bar having an outer diameter of 5 to 20 mm and an inner diameter of 4 to 19 mm.
  • the hollow portion of the bus bar serves as an exhaust passage for gas discharged from the single cell a or the single cell b.
  • the power supply apparatus according to [1] or [2], wherein the assembled battery A or the assembled battery B includes a housing that holds a plurality of single cells, and the bus bar is separated from the housing.
  • the power source according to [1] or [2], wherein a temperature or voltage sensor is disposed in a gap between the single cells a of the assembled battery A or a single cell b of the assembled battery B. apparatus.
  • An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged.
  • 1st battery module which is electrically connected with the electrode of the assembled battery B through the bus bar, and at least a part of the bus bar is disposed in the gap between the cells a, and manufactured in the same manner as the first battery module
  • the first and second battery modules are arranged such that the anode sides face each other, the anode at one end of the first battery module, and the second battery module A power supply device in which a negative electrode at one end is electrically connected via a bus bar.
  • the power supply device according to [11] further including an explosion-proof hood disposed on the anodes of the first and second battery modules.
  • An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged.
  • 1st battery module which is electrically connected with the electrode of the assembled battery B through the bus bar, and at least a part of the bus bar is disposed in the gap between the cells a, and manufactured in the same manner as the first battery module A second battery module, and the anode side of the first battery module and the anode side of the second battery module are arranged to face each other, and the anode at one end of the first battery module
  • the power supply device in which the negative electrode at one end of the second battery module is electrically connected via a bus bar.
  • the power supply device of the present invention has a large capacity by electrically connecting a plurality of assembled batteries having a plurality of single cells. And since the electrical connection part of assembled batteries is compact, the energy density of a power supply device increases. Therefore, it can be used for a power supply device for applications where an increase in capacity and an improvement in energy density are desired.
  • FIG. 1A is a perspective view of an example of an assembled battery constituting a power supply device.
  • FIG. 1B is an exploded perspective view of an example of an assembled battery constituting the power supply device.
  • FIG. 2A is a side view of the assembled battery 100 in FIG. 1A as viewed from the arrow X1 side.
  • FIG. 2B is a side view of the assembled battery 100 in FIG. 1A as viewed from the side of the arrow X2.
  • FIG. 2C is a side view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Y.
  • FIG. 2D is a top view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Z.
  • FIG. 1A is a perspective view of an example of an assembled battery constituting a power supply device.
  • FIG. 1B is an exploded perspective view of an example of an assembled battery constituting the power supply device.
  • FIG. 2A is a side view of the assembled battery 100 in FIG
  • FIG. 3A is a perspective view showing a position where a bus bar is arranged in a case where a group of unit cells is arranged in the closest packing.
  • FIG. 3B is a top view showing a position where the bus bars are arranged when the group of single cells is arranged in the closest packing.
  • FIG. 3C is a perspective view showing a position where a bus bar is arranged when a group of unit cells is arranged in a cube.
  • FIG. 3D is a top view showing a position where the bus bar is arranged when the group of single cells is arranged in a cube.
  • FIG. 4A is a perspective view of an example of an assembled battery constituting a power supply device having an explosion-proof structure.
  • FIG. 4A is a perspective view of an example of an assembled battery constituting a power supply device having an explosion-proof structure.
  • FIG. 4B is an exploded perspective view of an example of an assembled battery constituting a power supply device having an explosion-proof structure. It is a figure which shows the state which connects two assembled batteries.
  • FIG. 6A is an external perspective view of one embodiment of a power supply device.
  • FIG. 6B is an internal perspective view of one embodiment of the power supply device.
  • FIG. 6C is an internal top view of one embodiment of the power supply.
  • FIG. 7 is an internal top view of a modification of the embodiment of the power supply device.
  • the power supply device of the present invention includes two or more assembled batteries, and the assembled batteries are electrically connected to each other.
  • the electrical connection between the assembled batteries may be a series connection or a parallel connection.
  • the battery pack is electrically connected through a bus bar.
  • each unit cell is preferably arranged on the same plane.
  • the battery pack includes a plurality of columnar unit cells, an electrode plate disposed on the column top of the unit cell, and an electrode plate disposed on the column bottom of the unit cell.
  • the electrode plate arranged at the column top of the unit cell is connected to the electrode terminal at the column top of the unit cell.
  • the electrode plate arranged at the column bottom of the unit cell is connected to the electrode terminal at the column bottom of the unit cell.
  • the plurality of single cells included in the assembled battery may be supported by a housing member called a housing.
  • the housing can be, for example, an assembly of pipe-shaped members that can accommodate each unit cell (see the pipe-shaped member 30 in FIG. 1), a casting that has holes that can accommodate each unit cell, and the like.
  • the bus bar may be a conductor member that electrically connects the assembled batteries, and may be a flexible wiring member or a rigid metal bar. However, from the viewpoint of facilitating connection work between the assembled batteries, a rigid metal rod may be used.
  • the metal bar may be a solid bar or a hollow bar. Examples of metals include copper, iron, nickel, aluminum, or alloys thereof.
  • the bus bar may be a multilayer plywood containing those metals.
  • the metal bar constituting the bus bar preferably has an outer diameter of ⁇ 5 to 20 mm. Sufficient strength is obtained by setting the outer diameter ⁇ to 5 mm or more. On the other hand, when the outer diameter ⁇ is 20 mm or less, the assembled batteries can be connected to each other in a space efficient manner. Further, the metal bar constituting the bus bar may be a solid bar or a hollow bar (pipe shape).
  • FIG. 1A is a perspective view of an assembled battery 100 constituting a power supply device.
  • FIG. 1B is an exploded perspective view of the assembled battery 100 constituting the power supply device.
  • the assembled battery 100 includes an electrode plate 10, a holder 20, a housing formed of a plurality of pipe-shaped members 30 (30a, 30b,... 30t), and a plurality of single cells 40 (40a, 40b). ,..., 40t), a holder 50, an electrode plate 60, and a bus bar 70.
  • Each cell 40 is accommodated in the pipe-shaped member 30.
  • the accommodated unit cell 40 is supported by the holder 20 and the holder 50.
  • One electrode 41 of the unit cell is connected to the electrode plate 10, and the other electrode 42 is connected to the electrode plate 60.
  • the bus bar 70 is connected to the electrode plate 10, but is not connected to the electrode plate 60.
  • the bus bar 70 may be inseparably connected to the electrode plate 10 or may be detachably connected. For example, if the bus bar 70 is metallurgically joined to the electrode plate 10, it is usually inseparable. If the bus bar 70 is fixed to the electrode plate 10 with a screw, it is detachably connected.
  • FIG. 2A is a side view of the assembled battery 100 in FIG. 1A as viewed from the arrow X1 side.
  • FIG. 2B is a side view of the assembled battery 100 in FIG. 1A as viewed from the side of the arrow X2.
  • FIG. 2C is a side view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Y.
  • FIG. 2D is a top view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Z.
  • a bus bar 70 is disposed at one end in the length direction of the electrode plate 10 (the assembled battery 100). One end of the bus bar 70 is joined to the electrode plate 10. On the other hand, the other end of the bus bar 70 is not joined to the electrode plate 60 but can be joined to another member.
  • the bus bar 70 is bonded to the electrode plate 10 by mechanical or metallurgical bonding.
  • the cells in the assembled battery are preferably arranged in the same plane.
  • the arrangement is not particularly limited, but it is necessary to provide a gap between the arranged cells.
  • the cells may be arranged in the closest packing.
  • they may be arranged in a cube.
  • FIG. 3A is a perspective view showing a state in which a plurality of unit cells 40 (40a, 40b,... 40t) are arranged in the closest packed arrangement.
  • FIG. 3B is a top view of the plurality of unit cells 40 corresponding to FIG. 3A.
  • the plurality of single cells 40 (40a, 40b,... 40t) are arranged in three rows in a close-packed state.
  • the bus bar 70 is disposed along a dotted line 71 between the cells 40g at the right end of the first row and the cells 40t at the right end of the third row.
  • the bus bar 70 is arranged at the right end in the length (X) direction and the position 72 in the second row in the width (Y) direction of the plurality of unit cells 40. By arranging the bus bar 70 in this way, a part of the bus bar 70 is arranged in the gap between the single cells 40.
  • FIG. 3C is a perspective view showing a state in which a plurality of unit cells 40 (40a, 40b,... 40t) are arranged in a cubic manner.
  • FIG. 3D is a top view of the plurality of unit cells 40 corresponding to FIG. 3C.
  • the plurality of single cells 40 (40a, 40b,... 40t) are arranged in three rows in a cubic arrangement state.
  • the bus bar 70 is arranged along a dotted line 71 between the cells 40g at the right end of the first row and the cells 40t at the right end of the third row. Further, as shown in FIG.
  • the bus bar 70 is disposed at the right end in the length (X) direction and the position 72 in the second row in the width (Y) direction of the plurality of unit cells 40.
  • the bus bar 70 is arranged in this way, a part of the bus bar 70 is arranged in the gap between the single cells 40.
  • the space for arranging the bus bars can be minimized. Therefore, when the power supply device is manufactured by combining the assembled batteries 100A and 100B, the volume of the entire power supply device can be reduced.
  • bus bar 70 should just be arrange
  • FIG. For example, as shown in the dotted lines in FIG. 3B and FIG. 3D, it is only necessary that a part of the bus bar 70 is disposed inside the straight line (common tangent line) connecting the edges of the unit cells. .
  • bus bar 70 is disposed in the gap between the single cells 40, it is preferable that the bus bars 70 are separated without contacting the single cells 40 or the pipe-shaped member 30 covering the single cells 40. This is to prevent heat generation of the assembled battery during power generation by flowing the refrigerant through the separation portion.
  • the bus bar 70 may be a pipe-shaped hollow bar. In that case, you may use the hollow part of a hollow bar as an exhaust flow path.
  • Each unit cell 40 has a possibility of thermal runaway due to some trouble. For such fear, each cell 40 preferably has a safety valve called an explosion-proof valve 43 (see FIG. 4B).
  • the explosion-proof valve 43 prevents the single cell 40 from exploding by releasing the internal pressure when the internal pressure of the single cell 40 increases excessively.
  • the gas when the explosion-proof valve 43 is opened can be exhausted to the outside through a flow path composed of the hollow portions of the explosion-proof hood 80 and the bus bar 70.
  • FIG. 4A and 4B show an assembled battery 100 'having an explosion-proof structure.
  • FIG. 4A is a perspective view of the battery pack 100 ′.
  • FIG. 4B is an exploded perspective view of the battery pack 100 ′.
  • the assembled battery 100 ′ includes an explosion-proof hood 80, an electrode plate 10, a holder 20, a housing including a plurality of pipe-shaped members 30, a plurality of unit cells 40 ′, and a holder 50.
  • the electrode plate 60 and the bus bar 70 are provided.
  • the electrode plate 10, the holder 20, a housing made up of a plurality of pipe-shaped members 30, the holder 50, the electrode plate 60, and the bus bar 70 are the same as those shown in FIG. 1A.
  • the unit cell 40 ′ of the assembled battery 100 ′ has an explosion-proof valve 43. Further, the explosion-proof hood 80 forms a sealed space above the unit cell 40 '. The sealed space formed by the explosion-proof hood 80 communicates with the hollow portion of the bus bar 70. Therefore, if the explosion-proof valve of the unit cell 40 ′ is opened, the exhaust gas is produced outside the assembled battery 100 ′ through the sealed space formed by the explosion-proof hood 80 and the hollow portion of the bus bar 70.
  • FIG. 5 shows a state where two assembled batteries (100A and 100B) are connected via a bus bar.
  • the assembled battery 100A includes a plurality of pipe-shaped members 30A that accommodate the unit cells 40A, and further includes an electrode plate 10A and an electrode plate 60A.
  • the assembled battery 100B includes a plurality of pipe-shaped members 30B that accommodate the unit cells 40B, and includes an electrode plate 10B and an electrode plate 60B.
  • the assembled battery 100A has a bus bar 70A, and one end of the bus bar 70A is connected to the electrode plate 10A, but the other end is not connected to the electrode plate 60A.
  • the electrode plate 60B of the assembled battery 100B has a connection part 61B for connecting the other end of the bus bar 70A.
  • the assembled battery 100B may also have a bus bar 70B (not shown) connected to the electrode plate 10B, similarly to the assembled battery 100A.
  • the bus bar 70B may be connected to the connection portion 61C of the electrode plate 60C of the assembled battery 100C (not shown) to obtain a higher-capacity power supply device.
  • FIG. 6A is an external perspective view of one embodiment of a power supply device.
  • FIG. 6B is an internal perspective view of one embodiment of the power supply device.
  • FIG. 6C is an internal top view of one embodiment of the power supply.
  • the power supply device 200 includes a rectangular parallelepiped main body case 201 and a lid body 202 disposed on the upper surface of the main body case. In the body case 201, as shown in FIG.
  • At least a part of the bus bar is disposed in a gap between the cells a at one end in the length direction of the assembled battery 100A.
  • FIG. 7 is an internal top view of a modification of the embodiment of the power supply device.
  • the first and second battery modules 301 and 302 may be arranged so that the anode side of the first battery module 301 and the negative electrode side of the second battery module 302 face each other. Good.
  • the anode at one end of the first battery module 301 and the anode at one end of the second battery module 302 are preferably electrically connected via the bus bar 70.
  • the arrangement shown in FIG. 6C is preferable. This is because the number of members can be reduced because only one explosion-proof hood is required.
  • the power supply device of the present invention is a large-capacity power supply device because it has a plurality of assembled batteries electrically connected to each other. And since the connection part which electrically connects an assembled battery is compact, it is a power supply device with high energy density. Therefore, it can be used for a power supply device for applications where an increase in capacity and an improvement in energy density are desired.
  • Electrode plate 20 Holder 30, 30A, 30B Pipe-like member 40 Single cell 40 'Single cell with explosion-proof valve 41 Electrode 42 Electrode 43 Explosion-proof valve 50 Holder 60, 60A, 60B Electrode plate 70, 70A, 70B Bus bar 80 Explosion-proof hood 100, 100A, 100B Battery pack 100 'Battery pack having explosion-proof structure 200 Power supply device 201 Main body case 202 Lid 301 First battery module 302 Second battery module

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)

Abstract

This power supply apparatus includes an assembled battery (A) having a plurality of unit batteries (a) disposed on a same plane, and an assembled battery (B) having a plurality of unit batteries (b) disposed on a same plane. In the power supply apparatus, the electrodes of the assembled battery (A), and the electrodes of the assembled battery (B) are electrically connected to each other via a bus bar, and at least a part of the bus bar is disposed in a gap between the unit batteries (a) of the assembled battery (A). In this power supply apparatus having the assembled batteries connected therein, energy density of the power supply apparatus can be easily increased and the assembled batteries can be easily electrically connected to each other by reducing the capacity of an electrically connecting section of the assembled batteries.

Description

電源装置Power supply
　本発明は、電源装置、特に複数の単電池を含む組電池同士を電気接続した電源装置に関する。 The present invention relates to a power supply device, and more particularly to a power supply device in which assembled batteries including a plurality of single cells are electrically connected to each other.
　大容量の電源装置を得るために、複数の単電池を収容する電池ユニット（組電池）を複数電気接続して、電源装置とすることがある（特許文献１を参照）。特許文献１は、各電池ユニットに金属リード板を設けて、金属リード板を介して電池ユニット同士を電気接続することを提案している。このとき、金属リード板同士を直接接触させてもよいし、リード線で接続してもよいし、半田付けして連結してもよいとされている。
　その他にも、例えば、特許文献２，３には、複数の組電池がバスバーを介して直列に接続された電源装置が提案されている。しかし、バスバーを配置するための空間が必要となり、電源装置全体の体積が増大するという問題があった。 In order to obtain a large-capacity power supply device, a plurality of battery units (assembled batteries) that accommodate a plurality of single cells may be electrically connected to form a power supply device (see Patent Document 1). Patent Document 1 proposes that each battery unit is provided with a metal lead plate and the battery units are electrically connected to each other via the metal lead plate. At this time, the metal lead plates may be brought into direct contact with each other, may be connected with lead wires, or may be connected by soldering.
In addition, for example, Patent Documents 2 and 3 propose a power supply device in which a plurality of assembled batteries are connected in series via a bus bar. However, there is a problem that a space for arranging the bus bars is required, and the volume of the entire power supply apparatus is increased.
特開２０００－１３３２２７号公報JP 2000-133227 A 特開２００３-４５５０４号公報JP 2003-45504 A 米国特許出願公開第２０１１/０１０４５５US Patent Application Publication No. 2011/010455
　近年、電源装置の大容量化とともに、その容積を低減すること、つまりエネルギー密度の高い電源装置が求められている。一方で、電源装置を構成する電池ユニット（組電池）の電気接続作業が簡便であることが求められている。 In recent years, there has been a demand for a power supply apparatus having a large energy density, that is, a capacity reduction of the power supply apparatus, that is, a high energy density. On the other hand, the electrical connection work of the battery unit (assembled battery) constituting the power supply device is required to be simple.
　そこで本発明は、電池ユニット（組電池）の電気接続部の容積を低減して電源装置のエネルギー密度を高めること、および組電池同士の電気接続を容易に行えるようにすること、を目的とする。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to increase the energy density of a power supply device by reducing the volume of an electrical connection portion of a battery unit (assembled battery) and to easily perform electrical connection between assembled batteries. .
　すなわち本発明は、以下に示す電源装置に関する。
　［１］複数の単電池ａを同一平面に配列した組電池Ａと、複数の単電池ｂを同一平面に配列した組電池Ｂと、を含む電源装置であって、組電池Ａの電極と組電池Ｂの電極とは、バスバーを介して電気接続されており、かつバスバーの少なくとも一部は、組電池Ａの単電池ａ同士の隙間に配置されている、電源装置。
　［２］組電池Ａは、複数の円柱状の単電池ａと、単電池ａの頂部に配置された電極板α-１と、単電池ａの底部に配置された電極板α-２とを含み、組電池Ｂは、複数の円柱状の単電池ｂと、単電池ｂの頂部に配置された電極板β-１と、単電池ｂの底部に配置された電極板β-２とを含み、かつバスバーは、単電池ａの頂部に配置された電極板α-１と、単電池ｂの底部に配置された電極板β-２とを接続する、［１］に記載の電源装置。
　［３］バスバーの少なくとも一部は、組電池Ｂの単電池ｂ同士の隙間に配置されている、［１］または［２］に記載の電源装置。 That is, this invention relates to the power supply device shown below.
[1] A power supply device including an assembled battery A in which a plurality of unit cells a are arranged on the same plane and an assembled battery B in which a plurality of unit cells b are arranged on the same plane, The battery B is electrically connected to the electrode of the battery B through a bus bar, and at least a part of the bus bar is disposed in the gap between the cells a of the assembled battery A.
[2] The assembled battery A includes a plurality of cylindrical unit cells a, an electrode plate α-1 disposed at the top of the unit cell a, and an electrode plate α-2 disposed at the bottom of the unit cell a. The assembled battery B includes a plurality of cylindrical unit cells b, an electrode plate β-1 disposed at the top of the unit cell b, and an electrode plate β-2 disposed at the bottom of the unit cell b. The bus bar connects the electrode plate α-1 disposed at the top of the unit cell a and the electrode plate β-2 disposed at the bottom of the unit cell b, according to [1].
[3] The power supply device according to [1] or [2], wherein at least a part of the bus bar is disposed in a gap between the cells b of the assembled battery B.
　［４］バスバーは、銅、鉄，ニッケル，アルミニウム、またはそれらの合金、もしくはそれらを含む複層の合板である、［１］または［２］に記載の電源装置。
　［５］バスバーは、外径Φ５～２０ｍｍの中実バーである、［１］または［２］に記載の電源装置。
　［６］バスバーは、外径Φ５～２０ｍｍ、内径４～１９ｍｍの中空バーである、［１］または［２］に記載の電源装置。
　［７］バスバーの中空部は、単電池ａまたは単電池ｂから排出されるガスの排気流路となる、［６］に記載の電源装置。 [4] The power supply device according to [1] or [2], wherein the bus bar is copper, iron, nickel, aluminum, or an alloy thereof, or a multilayer plywood containing them.
[5] The power supply device according to [1] or [2], wherein the bus bar is a solid bar having an outer diameter of Φ5 to 20 mm.
[6] The power supply device according to [1] or [2], wherein the bus bar is a hollow bar having an outer diameter of 5 to 20 mm and an inner diameter of 4 to 19 mm.
[7] The power supply device according to [6], wherein the hollow portion of the bus bar serves as an exhaust passage for gas discharged from the single cell a or the single cell b.
　［８］バスバーは、電極板α－１または電極板β－２に、機械的または冶金的に接合されている、［２］に記載の電源装置。 [8] The power supply device according to [2], wherein the bus bar is mechanically or metallurgically joined to the electrode plate α-1 or the electrode plate β-2.
　［９］組電池Ａまたは組電池Ｂは、複数の単電池を保持するハウジングを有し、かつバスバーは、ハウジングと離間している、［１］またま［２］に記載の電源装置。
　［１０］組電池Ａの単電池ａ同士の隙間、または組電池Ｂの単電池ｂ同士の隙間には、温度または電圧のセンサーが配置されている、［１］または［２］に記載の電源装置。
　［１１］複数の単電池ａが同一平面に配列された組電池Ａと複数の単電池ｂが同一平面に配列された組電池Ｂとが交互に連続して配置され、組電池Ａの電極と組電池Ｂの電極とがバスバーを介して電気接続され、バスバーの少なくとも一部は単電池ａ同士の隙間に配置されている、第１の電池モジュールと、第１の電池モジュールと同様にして製造された第２の電池モジュールと、を有し、第１、第２の電池モジュールは、各陽極側が互いに向かい合うように配置され、第１の電池モジュールの一端の陽極と、第２の電池モジュールの一端の負極とがバスバーを介して電気接続されている、電源装置。
　［１２］第１、第２の電池モジュールの陽極上に配置された、防爆フードをさらに備える、［１１］に記載の電源装置。
　［１３］複数の単電池ａが同一平面に配列された組電池Ａと複数の単電池ｂが同一平面に配列された組電池Ｂとが交互に連続して配置され、組電池Ａの電極と組電池Ｂの電極とがバスバーを介して電気接続され、バスバーの少なくとも一部は単電池ａ同士の隙間に配置されている、第１の電池モジュールと、第１の電池モジュールと同様にして製造された第２の電池モジュールと、を有し、第１の電池モジュールの陽極側と、第２の電池モジュールの負極側とがそれぞれ向かい合うように配置され、第１の電池モジュールの一端の陽極と、第２の電池モジュールの一端の負極とがバスバーを介して電気接続されている、電源装置。 [9] The power supply apparatus according to [1] or [2], wherein the assembled battery A or the assembled battery B includes a housing that holds a plurality of single cells, and the bus bar is separated from the housing.
[10] The power source according to [1] or [2], wherein a temperature or voltage sensor is disposed in a gap between the single cells a of the assembled battery A or a single cell b of the assembled battery B. apparatus.
[11] An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged. 1st battery module which is electrically connected with the electrode of the assembled battery B through the bus bar, and at least a part of the bus bar is disposed in the gap between the cells a, and manufactured in the same manner as the first battery module The first and second battery modules are arranged such that the anode sides face each other, the anode at one end of the first battery module, and the second battery module A power supply device in which a negative electrode at one end is electrically connected via a bus bar.
[12] The power supply device according to [11], further including an explosion-proof hood disposed on the anodes of the first and second battery modules.
[13] An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged. 1st battery module which is electrically connected with the electrode of the assembled battery B through the bus bar, and at least a part of the bus bar is disposed in the gap between the cells a, and manufactured in the same manner as the first battery module A second battery module, and the anode side of the first battery module and the anode side of the second battery module are arranged to face each other, and the anode at one end of the first battery module The power supply device in which the negative electrode at one end of the second battery module is electrically connected via a bus bar.
　本発明の電源装置は、複数の単電池を有する組電池の複数を電気接続することで、大容量化されている。しかも、組電池同士の電気接続部がコンパクトであるので、電源装置のエネルギー密度が高まる。よって、大容量化とともに、エネルギー密度の向上が望まれる用途の電源装置に用いられうる。 The power supply device of the present invention has a large capacity by electrically connecting a plurality of assembled batteries having a plurality of single cells. And since the electrical connection part of assembled batteries is compact, the energy density of a power supply device increases. Therefore, it can be used for a power supply device for applications where an increase in capacity and an improvement in energy density are desired.
図１Ａは電源装置を構成する組電池の例の斜視図である。図１Ｂは電源装置を構成する組電池の例の分解斜視図である。FIG. 1A is a perspective view of an example of an assembled battery constituting a power supply device. FIG. 1B is an exploded perspective view of an example of an assembled battery constituting the power supply device. 図２Ａは、図１Ａにおける組電池１００を矢印Ｘ１の側から見た側面図である。図２Ｂは、図１Ａにおける組電池１００を矢印Ｘ２の側から見た側面図である。図２Ｃは、図１Ａにおける組電池１００を矢印Ｙの方向から見た側面図である。図２Ｄは、図１Ａにおける組電池１００を矢印Ｚの方向から見た上面図である。FIG. 2A is a side view of the assembled battery 100 in FIG. 1A as viewed from the arrow X1 side. FIG. 2B is a side view of the assembled battery 100 in FIG. 1A as viewed from the side of the arrow X2. FIG. 2C is a side view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Y. FIG. 2D is a top view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Z. 図３Ａは単電池の群が最密重点配列されている場合のバスバーが配置される位置を示す斜視図である。図３Ｂは単電池の群が最密重点配列されている場合のバスバーが配置される位置を示す上面図である。図３Ｃは単電池の群が立方配列されている場合のバスバーが配置される位置を示す斜視図である。図３Ｄは単電池の群が立方配列されている場合のバスバーが配置される位置を示す上面図である。FIG. 3A is a perspective view showing a position where a bus bar is arranged in a case where a group of unit cells is arranged in the closest packing. FIG. 3B is a top view showing a position where the bus bars are arranged when the group of single cells is arranged in the closest packing. FIG. 3C is a perspective view showing a position where a bus bar is arranged when a group of unit cells is arranged in a cube. FIG. 3D is a top view showing a position where the bus bar is arranged when the group of single cells is arranged in a cube. 図４Ａは防爆構造を備える電源装置を構成する組電池の例の斜視図である。図４Ｂは防爆構造を備える電源装置を構成する組電池の例の分解斜視図である。FIG. 4A is a perspective view of an example of an assembled battery constituting a power supply device having an explosion-proof structure. FIG. 4B is an exploded perspective view of an example of an assembled battery constituting a power supply device having an explosion-proof structure. ２つの組電池を接続する状態を示す図である。It is a figure which shows the state which connects two assembled batteries. 図６Ａは、電源装置の１実施形態の外観斜視図である。図６Ｂは、電源装置の１実施形態の内部斜視図である。図６Ｃは、電源装置の１実施形態の内部上面図である。FIG. 6A is an external perspective view of one embodiment of a power supply device. FIG. 6B is an internal perspective view of one embodiment of the power supply device. FIG. 6C is an internal top view of one embodiment of the power supply. 図７は、電源装置の１実施形態の変形例の内部上面図である。FIG. 7 is an internal top view of a modification of the embodiment of the power supply device.
　本発明の電源装置は、２以上の組電池を含み、組電池同士が電気接続されている。組電池同士の電気接続は、直列接続であっても、並列接続であってもよい。組電池同士の電気接続を、バスバーを介して行うことを特徴とする。 The power supply device of the present invention includes two or more assembled batteries, and the assembled batteries are electrically connected to each other. The electrical connection between the assembled batteries may be a series connection or a parallel connection. The battery pack is electrically connected through a bus bar.
　組電池において、各単電池は同一平面に配列されていることが好ましい。具体的には、組電池は、複数の円柱状の単電池と、単電池の柱頂部に配置された電極板と、単電池の柱底部に配置された電極板と、を有する。単電池の柱頂部に配置された電極板は、単電池の柱頂部の電極端子と接続している。単電池の柱底部に配置された電極板は、単電池の柱底部の電極端子と接続している。 In the assembled battery, each unit cell is preferably arranged on the same plane. Specifically, the battery pack includes a plurality of columnar unit cells, an electrode plate disposed on the column top of the unit cell, and an electrode plate disposed on the column bottom of the unit cell. The electrode plate arranged at the column top of the unit cell is connected to the electrode terminal at the column top of the unit cell. The electrode plate arranged at the column bottom of the unit cell is connected to the electrode terminal at the column bottom of the unit cell.
　組電池に含まれる複数の単電池は、ハウジングと称される収容部材に支持されていてもよい。ハウジングは、例えば、各単電池を収容可能なパイプ状部材の集合体（図１におけるパイプ状部材３０を参照）、各単電池を収容可能な孔を設けた鋳物などでありうる。 The plurality of single cells included in the assembled battery may be supported by a housing member called a housing. The housing can be, for example, an assembly of pipe-shaped members that can accommodate each unit cell (see the pipe-shaped member 30 in FIG. 1), a casting that has holes that can accommodate each unit cell, and the like.
　バスバーは、組電池同士を電気接続させる導体部材であればよく、柔軟な配線部材であってもよいし、剛直な金属棒であってもよい。しかし、組電池同士の接続作業を容易にするという視点から、剛直な金属棒とする場合もある。金属棒は、中実の棒材であってもよく、中空の棒材であってもよい。金属の例には、銅、鉄，ニッケル，アルミニウム、またはそれらの合金が含まれる。バスバーは、それらの金属を含む複層の合板であってもよい。 The bus bar may be a conductor member that electrically connects the assembled batteries, and may be a flexible wiring member or a rigid metal bar. However, from the viewpoint of facilitating connection work between the assembled batteries, a rigid metal rod may be used. The metal bar may be a solid bar or a hollow bar. Examples of metals include copper, iron, nickel, aluminum, or alloys thereof. The bus bar may be a multilayer plywood containing those metals.
　バスバーを構成する金属棒は、外径Φ５～２０ｍｍであることが好ましい。外径Φを５ｍｍ以上とすることで、十分な強度を得る。一方、外径Φを２０ｍｍ以下とすることで、組電池同士をスペース効率よく接続させることができる。さらに、バスバーを構成する金属棒は、中実バーであってもよいし、中空バー（パイプ状）であってもよい。 The metal bar constituting the bus bar preferably has an outer diameter of Φ5 to 20 mm. Sufficient strength is obtained by setting the outer diameter Φ to 5 mm or more. On the other hand, when the outer diameter Φ is 20 mm or less, the assembled batteries can be connected to each other in a space efficient manner. Further, the metal bar constituting the bus bar may be a solid bar or a hollow bar (pipe shape).
　図１Ａは、電源装置を構成する組電池１００の斜視図である。図１Ｂは、電源装置を構成する組電池１００の分解斜視図である。図１Ｂに示されるように、組電池１００は、電極板１０と、ホルダー２０と、複数のパイプ状部材３０（３０ａ，３０ｂ，…３０ｔ）からなるハウジングと、複数の単電池４０（４０ａ，４０ｂ，…、４０ｔ）と、ホルダー５０と、電極板６０と、バスバー７０とを有する。 FIG. 1A is a perspective view of an assembled battery 100 constituting a power supply device. FIG. 1B is an exploded perspective view of the assembled battery 100 constituting the power supply device. As shown in FIG. 1B, the assembled battery 100 includes an electrode plate 10, a holder 20, a housing formed of a plurality of pipe-shaped members 30 (30a, 30b,... 30t), and a plurality of single cells 40 (40a, 40b). ,..., 40t), a holder 50, an electrode plate 60, and a bus bar 70.
　各単電池４０は、パイプ状部材３０に収容される。収容された単電池４０は、ホルダー２０およびホルダー５０で支持される。単電池の一方の電極４１は電極板１０に接続し、他方の電極４２は電極板６０に接続する。 Each cell 40 is accommodated in the pipe-shaped member 30. The accommodated unit cell 40 is supported by the holder 20 and the holder 50. One electrode 41 of the unit cell is connected to the electrode plate 10, and the other electrode 42 is connected to the electrode plate 60.
　バスバー７０は、電極板１０には接続しているが、一方で、電極板６０には接続していない。バスバー７０は、電極板１０に一体不可分に接続されていてもよいし、着脱可能に接続されていてもよい。例えば、電極版１０にバスバー７０を冶金的に接合すれば、通常は一体不可分になる。電極板１０にバスバー７０をねじで固定すれば、脱着可能に接続される。 The bus bar 70 is connected to the electrode plate 10, but is not connected to the electrode plate 60. The bus bar 70 may be inseparably connected to the electrode plate 10 or may be detachably connected. For example, if the bus bar 70 is metallurgically joined to the electrode plate 10, it is usually inseparable. If the bus bar 70 is fixed to the electrode plate 10 with a screw, it is detachably connected.
　図２Ａは、図１Ａにおける組電池１００を矢印Ｘ１の側から見た側面図である。図２Ｂは、図１Ａにおける組電池１００を矢印Ｘ２の側から見た側面図である。図２Ｃは、図１Ａにおける組電池１００を矢印Ｙの方向から見た側面図である。図２Ｄは、図１Ａにおける組電池１００を矢印Ｚの方向から見た上面図である。 FIG. 2A is a side view of the assembled battery 100 in FIG. 1A as viewed from the arrow X1 side. FIG. 2B is a side view of the assembled battery 100 in FIG. 1A as viewed from the side of the arrow X2. FIG. 2C is a side view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Y. FIG. 2D is a top view of the assembled battery 100 in FIG. 1A as viewed from the direction of the arrow Z.
　図２Ａに示されるように、一方の側面のパイプ状部材３０ｇ、３０ｔ同士の間に、バスバー７０が挟まれている。一方、図２Ｂに示されるように、他方の側面、即ち３０ａ、３０ｎ同士の間には、バスバー７０は配置されていない。そして、図２Ｃに示されるように、バスバー７０の一部は、パイプ状部材３０同士の隙間に入り込んでいる。このように、バスバー７０の軸方向と、単電池４０の軸方向とは平行していることが好ましい。 As shown in FIG. 2A, a bus bar 70 is sandwiched between the pipe-shaped members 30g and 30t on one side surface. On the other hand, as shown in FIG. 2B, the bus bar 70 is not disposed between the other side surfaces, that is, between 30a and 30n. As shown in FIG. 2C, a part of the bus bar 70 enters the gap between the pipe-shaped members 30. Thus, it is preferable that the axial direction of the bus bar 70 and the axial direction of the unit cell 40 are parallel.
　図２Ｄに示されるように、電極板１０（組電池１００）の長さ方向の一端にバスバー７０が配置されている。バスバー７０の一端は電極板１０に接合している。一方、バスバー７０の他端は、電極板６０に接合しておらず、他の部材に接合することができる。バスバー７０の電極板１０への接合は、機械的または冶金的接合される。 As shown in FIG. 2D, a bus bar 70 is disposed at one end in the length direction of the electrode plate 10 (the assembled battery 100). One end of the bus bar 70 is joined to the electrode plate 10. On the other hand, the other end of the bus bar 70 is not joined to the electrode plate 60 but can be joined to another member. The bus bar 70 is bonded to the electrode plate 10 by mechanical or metallurgical bonding.
　また、図２Ｃに示されるように、電極板６０は、バスバー７０が配置される側とは反対側に、接続部位６１を有している。接続部位６１は、他の組電極のバスバー７０が接続する部位となりうる（図５参照）。 Further, as shown in FIG. 2C, the electrode plate 60 has a connection portion 61 on the side opposite to the side where the bus bar 70 is disposed. The connection part 61 can be a part to which the bus bar 70 of another assembled electrode is connected (see FIG. 5).
　組電池における単電池は、同一平面に配列されていることが好ましい。その配列は特に限定されないが、配列された単電池同士の隙間が設けられる必要がある。単電池は、例えば、図３Ａ、図３Ｂに示されるように、最密重点配列されていてもよい。また図３Ｃ、図３Ｄに示されるように、立方配列されていてもよい。 The cells in the assembled battery are preferably arranged in the same plane. The arrangement is not particularly limited, but it is necessary to provide a gap between the arranged cells. For example, as shown in FIGS. 3A and 3B, the cells may be arranged in the closest packing. Further, as shown in FIG. 3C and FIG. 3D, they may be arranged in a cube.
　図３Ａは複数の単電池４０（４０ａ、４０ｂ、…４０ｔ）が最密充点配列されている状態を示す斜視図である。図３Ｂは、図３Ａに対応する複数の単電池４０の上面図である。図３Ｂに示すように、複数の単電池４０（４０ａ、４０ｂ、…４０ｔ）は、最密充填状態で３列に配置されている。バスバー７０は、図３Ａに示すように1列目右端の単電池４０ｇと３列目右端の単電池４０ｔの間の点線７１に沿って配置されている。またバスバー７０は、図３Ｂに示すように複数の単電池４０の長さ（Ｘ）方向の右端、幅（Ｙ）方向の２列目の位置７２に配置されている。このようにバスバー７０を配置することで、バスバー７０の一部が、単電池４０同士の隙間に配置される。 FIG. 3A is a perspective view showing a state in which a plurality of unit cells 40 (40a, 40b,... 40t) are arranged in the closest packed arrangement. FIG. 3B is a top view of the plurality of unit cells 40 corresponding to FIG. 3A. As shown in FIG. 3B, the plurality of single cells 40 (40a, 40b,... 40t) are arranged in three rows in a close-packed state. As shown in FIG. 3A, the bus bar 70 is disposed along a dotted line 71 between the cells 40g at the right end of the first row and the cells 40t at the right end of the third row. 3B, the bus bar 70 is arranged at the right end in the length (X) direction and the position 72 in the second row in the width (Y) direction of the plurality of unit cells 40. By arranging the bus bar 70 in this way, a part of the bus bar 70 is arranged in the gap between the single cells 40.
　また、図３Ｃは複数の単電池４０（４０ａ、４０ｂ、…４０ｔ）が立方配列されている状態を示す斜視図である。図３Ｄは、図３Ｃに対応する複数の単電池４０の上面図である。図３Ｄに示すように、複数の単電池４０（４０ａ、４０ｂ、…４０ｔ）は、立方配列状態で３列に配置されている。バスバー７０は、図３Ｃに示すように1列目右端の単電池４０ｇと３列目右端の単電池４０ｔの間の点線７１に沿って配置されている。またバスバー７０は、図３Ｄに示すように複数の単電池４０の長さ（Ｘ）方向の右端、幅（Ｙ）方向の２列目の位置７２に配置されている。このようにバスバー７０を配置することで、バスバー７０の一部が、単電池４０同士の隙間に配置される。
　以上のように、図３Ａ～図３Ｄに示すように複数の単電池４０を配置することで、バスバーを配置する空間を最小限にすることができる。そのため、組電池１００Ａ，１００Ｂを組み合わして、電源装置を製造した際に、電源装置全体の体積を小さくすることができる。 3C is a perspective view showing a state in which a plurality of unit cells 40 (40a, 40b,... 40t) are arranged in a cubic manner. FIG. 3D is a top view of the plurality of unit cells 40 corresponding to FIG. 3C. As shown in FIG. 3D, the plurality of single cells 40 (40a, 40b,... 40t) are arranged in three rows in a cubic arrangement state. As shown in FIG. 3C, the bus bar 70 is arranged along a dotted line 71 between the cells 40g at the right end of the first row and the cells 40t at the right end of the third row. Further, as shown in FIG. 3D, the bus bar 70 is disposed at the right end in the length (X) direction and the position 72 in the second row in the width (Y) direction of the plurality of unit cells 40. By arranging the bus bar 70 in this way, a part of the bus bar 70 is arranged in the gap between the single cells 40.
As described above, by arranging the plurality of single cells 40 as shown in FIGS. 3A to 3D, the space for arranging the bus bars can be minimized. Therefore, when the power supply device is manufactured by combining the assembled batteries 100A and 100B, the volume of the entire power supply device can be reduced.
　バスバー７０の一部が、単電池４０同士の隙間に配置されていればよい。隙間に配置されるとは、例えば図３Ｂおよび図３Ｄの点線に示されるように、単電池の縁を結ぶ直線（共通の接線）よりも内部にバスバー７０の一部が配置されていればよい。 A part of bus bar 70 should just be arrange | positioned in the clearance gap between the single cells 40. FIG. For example, as shown in the dotted lines in FIG. 3B and FIG. 3D, it is only necessary that a part of the bus bar 70 is disposed inside the straight line (common tangent line) connecting the edges of the unit cells. .
　バスバー７０は、単電池４０同士の隙間に配置されるが、単電池４０またはそれを覆うパイプ状部材３０には接触せずに、離間していることが好ましい。離間部に冷媒を流すことで、発電中の組電池の発熱を抑制するためである。 Although the bus bar 70 is disposed in the gap between the single cells 40, it is preferable that the bus bars 70 are separated without contacting the single cells 40 or the pipe-shaped member 30 covering the single cells 40. This is to prevent heat generation of the assembled battery during power generation by flowing the refrigerant through the separation portion.
　前述の通り、バスバー７０はパイプ状の中空バーであってもよい。その場合には、中空バーの中空部分を、排気流路として用いてもよい。各単電池４０は、何らかの不具合により、熱暴走が起こる可能性を有している。そのような恐れに対して、各単電池４０は、防爆弁４３と称される安全弁を有していることが好ましい（図４Ｂ参照）。防爆弁４３は、単電池４０の内部の圧力が過剰に高まったときに、内部圧力を解放することで、単電池４０が爆発することを防止する。防爆弁４３が開放したときのガスを、防爆フード８０とバスバー７０の中空部分からなる流路を通して、外部に排気することができる。 As described above, the bus bar 70 may be a pipe-shaped hollow bar. In that case, you may use the hollow part of a hollow bar as an exhaust flow path. Each unit cell 40 has a possibility of thermal runaway due to some trouble. For such fear, each cell 40 preferably has a safety valve called an explosion-proof valve 43 (see FIG. 4B). The explosion-proof valve 43 prevents the single cell 40 from exploding by releasing the internal pressure when the internal pressure of the single cell 40 increases excessively. The gas when the explosion-proof valve 43 is opened can be exhausted to the outside through a flow path composed of the hollow portions of the explosion-proof hood 80 and the bus bar 70.
　図４Ａ、図４Ｂには、防爆構造を有する組電池１００’が示される。図４Ａは、組電池１００’の斜視図である。図４Ｂは、組電池１００’の分解斜視図である。図４Ｂに示されるように、組電池１００’は、防爆フード８０と、電極板１０と、ホルダー２０と、複数のパイプ状部材３０からなるハウジングと、複数の単電池４０’と、ホルダー５０と、電極板６０と、バスバー７０とを有する。電極板１０と、ホルダー２０と、複数のパイプ状部材３０からなるハウジングと、ホルダー５０と、電極板６０と、バスバー７０とは、図１Ａに示されるものと同様である。 4A and 4B show an assembled battery 100 'having an explosion-proof structure. FIG. 4A is a perspective view of the battery pack 100 ′. FIG. 4B is an exploded perspective view of the battery pack 100 ′. As shown in FIG. 4B, the assembled battery 100 ′ includes an explosion-proof hood 80, an electrode plate 10, a holder 20, a housing including a plurality of pipe-shaped members 30, a plurality of unit cells 40 ′, and a holder 50. The electrode plate 60 and the bus bar 70 are provided. The electrode plate 10, the holder 20, a housing made up of a plurality of pipe-shaped members 30, the holder 50, the electrode plate 60, and the bus bar 70 are the same as those shown in FIG. 1A.
　組電池１００’の単電池４０’は、防爆弁４３を有する。さらに、防爆フード８０は、単電池４０’の上部に密閉空間を形成する。防爆フード８０が形成する密閉空間は、バスバー７０の中空部と連通している。従って、仮に単電池４０’の防爆弁が開いた場合には、その排ガスは防爆フード８０が形成する密閉空間と、バスバー７０の中空部とを経て、組電池１００’の外部に輩出される。 The unit cell 40 ′ of the assembled battery 100 ′ has an explosion-proof valve 43. Further, the explosion-proof hood 80 forms a sealed space above the unit cell 40 '. The sealed space formed by the explosion-proof hood 80 communicates with the hollow portion of the bus bar 70. Therefore, if the explosion-proof valve of the unit cell 40 ′ is opened, the exhaust gas is produced outside the assembled battery 100 ′ through the sealed space formed by the explosion-proof hood 80 and the hollow portion of the bus bar 70.
　図５には、２つの組電池（１００Ａと１００Ｂ）を、バスバーを介して接続する状態が示される。組電池１００Ａは、単電池４０Ａを収容するパイプ状部材３０Ａを複数含み、さらに電極板１０Ａと電極板６０Ａを有する。一方、組電池１００Ｂは、単電池４０Ｂを収容するパイプ状部材３０Ｂを複数含み、電極板１０Ｂと電極板６０Ｂを有する。 FIG. 5 shows a state where two assembled batteries (100A and 100B) are connected via a bus bar. The assembled battery 100A includes a plurality of pipe-shaped members 30A that accommodate the unit cells 40A, and further includes an electrode plate 10A and an electrode plate 60A. On the other hand, the assembled battery 100B includes a plurality of pipe-shaped members 30B that accommodate the unit cells 40B, and includes an electrode plate 10B and an electrode plate 60B.
　組電池１００Ａはバスバー７０Ａを有しており、バスバー７０Ａの一端は電極板１０Ａに接続しているが、他端は電極板６０Ａに接続していない。一方、組電池１００Ｂの電極板６０Ｂは、バスバー７０Ａの他端が接続するための接続部位６１Ｂを有する。 The assembled battery 100A has a bus bar 70A, and one end of the bus bar 70A is connected to the electrode plate 10A, but the other end is not connected to the electrode plate 60A. On the other hand, the electrode plate 60B of the assembled battery 100B has a connection part 61B for connecting the other end of the bus bar 70A.
　組電池１００Ａと組電池１００Ｂとを接続して電源装置とする場合には、組電池１００Ａのバスバー７０Ａを、組電池１００Ｂの接続部位６１Ｂに接続すればよい。バスバー７０Ａは、接続部位６１Ｂに機械的または冶金的に接合されうる。バスバー７０Ａは剛直体であるので、接続部位６１Ｂに位置あわせしやすく、接続作業が容易である。また、バスバー７０Ａと接続部位６１Ｂとをねじ固定すれば、容易に再分離することもできるので、電源装置のメンテナンスなども容易になる。 When the assembled battery 100A and the assembled battery 100B are connected to form a power supply device, the bus bar 70A of the assembled battery 100A may be connected to the connection part 61B of the assembled battery 100B. The bus bar 70A can be mechanically or metallurgically joined to the connection portion 61B. Since the bus bar 70A is a rigid body, it is easy to align with the connection part 61B, and the connection work is easy. Further, if the bus bar 70A and the connection part 61B are fixed with screws, the bus bar 70A and the connection part 61B can be easily re-separated.
　さらに、組電池１００Ｂも、組電池１００Ａと同様に、電極板１０Ｂに接続したバスバー７０Ｂ（不図示）を有していてもよい。バスバー７０Ｂは、組電池１００Ｃ（不図示）の電極板６０Ｃの接続部位６１Ｃに接続することで、さらに高容量の電源装置を得てもよい。 Furthermore, the assembled battery 100B may also have a bus bar 70B (not shown) connected to the electrode plate 10B, similarly to the assembled battery 100A. The bus bar 70B may be connected to the connection portion 61C of the electrode plate 60C of the assembled battery 100C (not shown) to obtain a higher-capacity power supply device.
　上述の組電池１００Ａ、１００Ｂの使用例として、組電池１００Ａ、１００Ｂを備える、電源装置の１実施形態を挙げて説明する。
　図６Ａは、電源装置の１実施形態の外観斜視図である。図６Ｂは、電源装置の１実施形態の内部斜視図である。図６Ｃは、電源装置の１実施形態の内部上面図である。
　図６Ａに示すように、電源装置２００は、直方体状の本体ケース２０１と、本体ケースの上面に配置された蓋体２０２とを備える。本体ケース２０１の内部には、図６Ｂに示すように、複数の単電池ａが同一平面に配列された組電池１００Ａと複数の単電池ｂが同一平面に配列された組電池１００Ｂとが交互に連続して配置された第１の電池モジュール３０１と、第1の電池モジュール３０１と同様に製造された第２の電池モジュール３０２とが納められている。第１の電池モジュール３０１と第２の電池モジュール３０２は、各陽極側が互いに向かい合うように配置されている。第１の電池モジュール３０１の一端の陽極と、第２の電池モジュール３０２の一端の負極とはバスバー７０を介して電気接続されている。なお、図６Ｃに示すように、組電池１００Ａの電極と組電池１００Ｂの電極とはバスバーを介して電気接続されている。バスバーの少なくとも一部は、組電池１００Ａの長さ方向の一端の単電池ａ同士の隙間に配置されている。
　図６Ｃに仮想線で示すように、第１、第２の電池モジュール３０１、３０２の陽極上には、防爆フード８０を設けることが好ましい。万が一、単電池ａ(ｂ)が破裂した場合であっても、電源装置２００の外部に部品の飛散を防止して、電源装置２００の安全性を向上できるからである。 As an example of use of the above-described assembled batteries 100A and 100B, an embodiment of a power supply device including the assembled batteries 100A and 100B will be described.
FIG. 6A is an external perspective view of one embodiment of a power supply device. FIG. 6B is an internal perspective view of one embodiment of the power supply device. FIG. 6C is an internal top view of one embodiment of the power supply.
As shown in FIG. 6A, the power supply device 200 includes a rectangular parallelepiped main body case 201 and a lid body 202 disposed on the upper surface of the main body case. In the body case 201, as shown in FIG. 6B, assembled batteries 100A in which a plurality of single cells a are arranged on the same plane and assembled batteries 100B in which a plurality of single cells b are arranged on the same plane are alternately arranged. A first battery module 301 arranged continuously and a second battery module 302 manufactured in the same manner as the first battery module 301 are housed. The first battery module 301 and the second battery module 302 are arranged so that the anode sides face each other. The anode at one end of the first battery module 301 and the negative electrode at one end of the second battery module 302 are electrically connected via a bus bar 70. 6C, the electrode of the assembled battery 100A and the electrode of the assembled battery 100B are electrically connected via a bus bar. At least a part of the bus bar is disposed in a gap between the cells a at one end in the length direction of the assembled battery 100A.
As indicated by phantom lines in FIG. 6C, it is preferable to provide an explosion-proof hood 80 on the anodes of the first and second battery modules 301 and 302. This is because even if the unit cell a (b) is ruptured, parts can be prevented from being scattered outside the power supply device 200, and the safety of the power supply device 200 can be improved.
　図７は、電源装置の１実施形態の変形例の内部上面図である。図７に示すように、第１、第２の電池モジュール３０１、３０２は、第１の電池モジュール３０１の陽極側と、第２の電池モジュール３０２の負極側とがそれぞれ向かい合うように配置してもよい。その際は、第１の電池モジュール３０１の一端の陽極と、第２の電池モジュール３０２の一端の負極とはバスバー７０を介して電気接続されることが好ましい。また図７に仮想線で示すように、第１、第２の電池モジュール３０１、３０２のそれぞれの陽極上に、防爆フード８０を設けることが好ましい。上述と同様に電源装置２００の安全性が向上するからである。
　図６Ｃ、図７に示す第１、第２の電池モジュール３０１、３０２の配置の中では、図６Ｃに示す配置が好ましい。防爆フードを1つ配置すればよい点で、部材数を少なくできるからである。 FIG. 7 is an internal top view of a modification of the embodiment of the power supply device. As shown in FIG. 7, the first and second battery modules 301 and 302 may be arranged so that the anode side of the first battery module 301 and the negative electrode side of the second battery module 302 face each other. Good. In that case, the anode at one end of the first battery module 301 and the anode at one end of the second battery module 302 are preferably electrically connected via the bus bar 70. Further, as indicated by phantom lines in FIG. 7, it is preferable to provide an explosion-proof hood 80 on each anode of the first and second battery modules 301 and 302. This is because the safety of the power supply device 200 is improved as described above.
Among the arrangements of the first and second battery modules 301 and 302 shown in FIGS. 6C and 7, the arrangement shown in FIG. 6C is preferable. This is because the number of members can be reduced because only one explosion-proof hood is required.
　本出願は、同出願人により先にされた日本国特許出願、すなわち、特願２０１１－１２１６４０号（出願日２０１１年５月３１日）に基づく優先権主張を伴うものであって、これらの明細書の内容を参照して本発明の一部としてここに組み込むものとする。 This application is accompanied by a priority claim based on a Japanese patent application filed earlier by the same applicant, ie, Japanese Patent Application No. 2011-121640 (filing date: May 31, 2011). The contents of which are incorporated herein as part of the present invention.
　本発明の電源装置は、互いに電気接続された複数の組電池を有するので大容量の電源装置である。しかも、組電池を電気接続する接続部がコンパクトであるので、エネルギー密度の高い電源装置である。よって、大容量化とともに、エネルギー密度の向上が望まれる用途の電源装置に用いられうる。 The power supply device of the present invention is a large-capacity power supply device because it has a plurality of assembled batteries electrically connected to each other. And since the connection part which electrically connects an assembled battery is compact, it is a power supply device with high energy density. Therefore, it can be used for a power supply device for applications where an increase in capacity and an improvement in energy density are desired.
　１０，１０Ａ，１０Ｂ　電極板
　２０　ホルダー
　３０，３０Ａ，３０Ｂ　パイプ状部材
　４０　単電池
　４０’　防爆弁を有する単電池
　４１　電極
　４２　電極
　４３　防爆弁
　５０　ホルダー
　６０，６０Ａ，６０Ｂ　電極板
　７０，７０Ａ，７０Ｂ　バスバー
　８０　防爆フード
　１００，１００Ａ，１００Ｂ　組電池
　１００’　防爆構造を有する組電池
　２００　電源装置
　２０１　本体ケース
　２０２　蓋体
　３０１　第１の電池モジュール
　３０２　第２の電池モジュール 10, 10A, 10B Electrode plate 20 Holder 30, 30A, 30B Pipe-like member 40 Single cell 40 'Single cell with explosion-proof valve 41 Electrode 42 Electrode 43 Explosion-proof valve 50 Holder 60, 60A, 60B Electrode plate 70, 70A, 70B Bus bar 80 Explosion- proof hood 100, 100A, 100B Battery pack 100 'Battery pack having explosion-proof structure 200 Power supply device 201 Main body case 202 Lid 301 First battery module 302 Second battery module

Claims (13)

  1. 　複数の単電池ａを同一平面に配列した組電池Ａと、複数の単電池ｂを同一平面に配列した組電池Ｂと、を含む電源装置であって、
    　前記組電池Ａの電極と前記組電池Ｂの電極とは、バスバーを介して電気接続されており、かつ前記バスバーの少なくとも一部は、前記組電池Ａの前記単電池ａ同士の隙間に配置されている、電源装置。     A power supply device including an assembled battery A in which a plurality of single cells a are arranged on the same plane, and an assembled battery B in which a plurality of single cells b are arranged on the same plane,
    The electrode of the assembled battery A and the electrode of the assembled battery B are electrically connected via a bus bar, and at least a part of the bus bar is disposed in a gap between the unit cells a of the assembled battery A. The power supply.
  2. 　前記組電池Ａは、複数の円柱状の単電池ａと、前記単電池ａの頂部に配置された電極板α-１と、前記単電池ａの底部に配置された電極板α-２とを含み、
    　前記組電池Ｂは、複数の円柱状の単電池ｂと、前記単電池ｂの頂部に配置された電極板β-１と、前記単電池ｂの底部に配置された電極板β-２とを含み、かつ
    　前記バスバーは、前記単電池ａの頂部に配置された電極板α-１と、前記単電池ｂの底部に配置された電極板β-２とを接続する、請求項１に記載の電源装置。     The assembled battery A includes a plurality of cylindrical unit cells a, an electrode plate α-1 disposed at the top of the unit cell a, and an electrode plate α-2 disposed at the bottom of the unit cell a. Including
    The assembled battery B includes a plurality of cylindrical unit cells b, an electrode plate β-1 disposed at the top of the unit cell b, and an electrode plate β-2 disposed at the bottom of the unit cell b. The bus bar includes: an electrode plate α-1 disposed on a top portion of the unit cell a and an electrode plate β-2 disposed on a bottom portion of the unit cell b. Power supply.
  3. 　前記バスバーの少なくとも一部は、前記組電池Ｂの前記単電池ｂ同士の隙間に配置されている、請求項１または２に記載の電源装置。 The power supply device according to claim 1 or 2, wherein at least a part of the bus bar is disposed in a gap between the unit cells b of the assembled battery B.
  4. 　前記バスバーは、銅、鉄，ニッケル，アルミニウム、またはそれらの合金、もしくはそれらを含む複層の合板である、請求項１または２に記載の電源装置。 The power supply device according to claim 1 or 2, wherein the bus bar is copper, iron, nickel, aluminum, an alloy thereof, or a multilayer plywood containing them.
  5. 　前記バスバーは、外径Φ５～２０ｍｍの中実バーである、請求項１または２に記載の電源装置。 The power supply device according to claim 1 or 2, wherein the bus bar is a solid bar having an outer diameter of Φ5 to 20 mm.
  6. 　前記バスバーは、外径Φ５～２０ｍｍ、内径４～１９ｍｍの中空バーである、請求項１または２に記載の電源装置。 3. The power supply device according to claim 1, wherein the bus bar is a hollow bar having an outer diameter of 5 to 20 mm and an inner diameter of 4 to 19 mm.
  7. 　前記バスバーの中空部は、前記単電池ａまたは前記単電池ｂから排出されるガスの排気流路となる、請求項６に記載の電源装置。 The power supply device according to claim 6, wherein the hollow portion of the bus bar serves as an exhaust passage for gas discharged from the unit cell a or the unit cell b.
  8. 　前記バスバーは、前記電極板α-１または前記電極板β-２に、機械的または冶金的に接合されている、請求項２に記載の電源装置。 The power supply device according to claim 2, wherein the bus bar is mechanically or metallurgically joined to the electrode plate α-1 or the electrode plate β-2.
  9. 　前記組電池Ａまたは前記組電池Ｂは、前記複数の単電池を保持するハウジングを有し、かつ
    　前記バスバーは、前記ハウジングと離間している、請求項１または２に記載の電源装置。     3. The power supply device according to claim 1, wherein the assembled battery A or the assembled battery B includes a housing that holds the plurality of unit cells, and the bus bar is separated from the housing.
  10. 　前記組電池Ａの前記単電池ａ同士の隙間、または前記組電池Ｂの前記単電池ｂ同士の隙間には、温度または電圧のセンサーが配置されている、請求項１または２に記載の電源装置。 3. The power supply device according to claim 1, wherein a temperature or voltage sensor is disposed in a gap between the single cells a of the assembled battery A or a gap between the single cells b of the assembled battery B. 4. .
  11. 　複数の単電池ａが同一平面に配列された組電池Ａと複数の単電池ｂが同一平面に配列された組電池Ｂとが交互に連続して配置され、前記組電池Ａの電極と前記組電池Ｂの電極とがバスバーを介して電気接続され、前記バスバーの少なくとも一部は前記単電池ａ同士の隙間に配置されている、第１の電池モジュールと、
    　前記第１の電池モジュールと同様にして製造された第２の電池モジュールと、を有し、
    　前記第１、第２の電池モジュールは、各陽極側が互いに向かい合うように配置され、前記第１の電池モジュールの一端の陽極と、前記第２の電池モジュールの一端の負極とがバスバーを介して電気接続されている、電源装置。     An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged, and the electrode of the assembled battery A and the set A first battery module electrically connected to the electrode of the battery B via a bus bar, wherein at least a part of the bus bar is disposed in a gap between the unit cells a;
    A second battery module manufactured in the same manner as the first battery module,
    The first and second battery modules are arranged so that the anode sides face each other, and an anode at one end of the first battery module and an anode at one end of the second battery module are electrically connected via a bus bar. Connected power supply.
  12. 　前記第１、第２の電池モジュールの陽極上に配置された、防爆フードをさらに備える、請求項１１に記載の電源装置。 The power supply device according to claim 11, further comprising an explosion-proof hood disposed on the anodes of the first and second battery modules.
  13. 　複数の単電池ａが同一平面に配列された組電池Ａと複数の単電池ｂが同一平面に配列された組電池Ｂとが交互に連続して配置され、前記組電池Ａの電極と前記組電池Ｂの電極とがバスバーを介して電気接続され、前記バスバーの少なくとも一部は前記単電池ａ同士の隙間に配置されている、第１の電池モジュールと、
    　前記第１の電池モジュールと同様にして製造された第２の電池モジュールと、を有し、
    　前記第１の電池モジュールの陽極側と、前記第２の電池モジュールの負極側とがそれぞれ向かい合うように配置され、前記第１の電池モジュールの一端の陽極と、前記第２の電池モジュールの一端の負極とがバスバーを介して電気接続されている、電源装置。     An assembled battery A in which a plurality of single cells a are arranged on the same plane and an assembled battery B in which a plurality of single cells b are arranged on the same plane are alternately and continuously arranged, and the electrode of the assembled battery A and the set A first battery module electrically connected to the electrode of the battery B via a bus bar, wherein at least a part of the bus bar is disposed in a gap between the unit cells a;
    A second battery module manufactured in the same manner as the first battery module,
    The anode side of the first battery module and the anode side of the second battery module are arranged to face each other, and the anode at one end of the first battery module and the one end of the second battery module are arranged. A power supply device in which the negative electrode is electrically connected via a bus bar.
PCT/JP2012/003111 2011-05-31 2012-05-11 Power supply apparatus WO2012164837A1 (en)

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CN108899464A (en) * 2018-07-02 2018-11-27 中兴高能技术有限责任公司 A kind of busbar connector and battery modules of battery modules
CN110752341A (en) * 2019-09-20 2020-02-04 杭州乾代科技有限公司 Parallel terminal suitable for modular lithium battery module and manufacturing method thereof

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