WO2019117436A1 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
WO2019117436A1
WO2019117436A1 PCT/KR2018/011652 KR2018011652W WO2019117436A1 WO 2019117436 A1 WO2019117436 A1 WO 2019117436A1 KR 2018011652 W KR2018011652 W KR 2018011652W WO 2019117436 A1 WO2019117436 A1 WO 2019117436A1
Authority
WO
WIPO (PCT)
Prior art keywords
input port
adhesive
battery cell
bus bar
input
Prior art date
Application number
PCT/KR2018/011652
Other languages
French (fr)
Korean (ko)
Inventor
윤철중
손기석
안재필
양승우
Original Assignee
삼성에스디아이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Priority to CN201880077794.8A priority Critical patent/CN111527640B/en
Publication of WO2019117436A1 publication Critical patent/WO2019117436A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery pack.
  • a secondary battery is a battery capable of charging and discharging, unlike a primary battery which can not be charged.
  • the secondary battery is used as an energy source for a mobile device, an electric vehicle, a hybrid vehicle, an electric bicycle, an uninterruptible power supply, etc., and may be used in the form of a single battery cell depending on the type of an external device. Or may be used in the form of a battery pack in which a plurality of battery cells are connected to one unit.
  • a small mobile device such as a mobile phone can operate for a predetermined time with the output and capacity of a single battery.
  • the battery pack can increase the output voltage or the output current according to the number of the built-in battery cells.
  • An embodiment of the present invention includes a battery pack in which a coupling structure between an input point and a battery cell side is improved so that electrical reliability can be improved at an input point where an electrical signal relating to state information of the battery cell is input .
  • a battery cell to which a signal input unit for acquiring status information is connected;
  • a wiring board for collecting status information of the battery cell
  • An input port coupled to the signal input unit; an output port coupled to the wiring board to output status information of the battery cell; and a sensing unit including a connection unit between the input port and the output port,
  • a first adhesive portion applied on an outer surface of the welded portion
  • the present invention in a configuration for acquiring status information of a battery cell through a conductive connection with a battery cell side and controlling charging and discharging operations of the battery cell based on collected status information,
  • the conductive connection portion with the battery cell side is doubly enclosed and protected from the external harmful environment so that the electrical signal relating to the state information of the battery cell is not distorted due to the deterioration of the part or the increase of the electric resistance,
  • a battery pack capable of improving reliability can be provided.
  • FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
  • Fig. 2 is an exploded perspective view of a part of the battery pack shown in Fig.
  • Fig. 3 is a view showing a part of the battery pack of Fig. 1 from above.
  • Fig. 4 is an exploded perspective view of a part of Fig.
  • FIG. 5 is an exploded perspective view for explaining the coupling structure of the sensing unit.
  • FIG. 6 and 7 are cross-sectional views taken along the line VI-VI of FIG. 5, wherein different cross-sectional views for illustrating the coupling structure of the sensing portion are shown.
  • Fig. 8 is an exploded perspective view of the sensing unit shown in Fig.
  • a battery cell to which a signal input unit for acquiring status information is connected;
  • a wiring board for collecting status information of the battery cell
  • An input port coupled to the signal input unit; an output port coupled to the wiring board to output status information of the battery cell; and a sensing unit including a connection unit between the input port and the output port,
  • a first adhesive portion applied on an outer surface of the welded portion
  • first and second adhesive portions may double-surround the welded portion.
  • the first bonding portion may be formed by solidification of the liquid bonding agent.
  • the second adhesive portion may be formed by a solid-state adhesive.
  • the second adhesive portion may include a double-sided tape.
  • the signal input unit and the input port may be coupled to each other via a second adhesive portion attached along the rim of the input port.
  • the second bonding portion may continuously surround the outer periphery of the welded portion between the signal input portion and the input port.
  • the first bonding portion may be filled in the filling region between the welding portion and the second bonding portion.
  • the input port may be provided with an injection hole for allowing the injection of the liquid adhesive forming the first adhesive portion.
  • the injection holes may be formed as slits formed in parallel with the opposing sides of the input ports.
  • the first bonding portion may be formed on the upper surface of the input port opposite to the welding portion.
  • first and second adhesive portions may be electrically insulative.
  • the welded portion may be an ultrasonic welded portion.
  • a push-in mark of an ultrasonic horn may be formed on the upper surface of the input port opposite to the welding portion.
  • the signal input unit may be a bus for electrically connecting neighboring battery cells
  • a voltage signal of the battery cell may be input to the input port coupled to the bus bar.
  • FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
  • Fig. 2 is an exploded perspective view of a part of the battery pack shown in Fig.
  • Fig. 3 is a view showing a part of the battery pack of Fig. 1 from above.
  • the battery pack of the present invention includes a battery cell B and a battery cell B arranged along one direction (Z1 direction, hereinafter the same) with the battery cell B, (C) for collecting state information of the battery cell (B) from the battery cell (B), which is seated on the frame (F) do.
  • the battery cells B may be arranged along one direction (Z1 direction).
  • a plurality of frames F may be arranged along one direction (Z1 direction) so as to be coupled with the battery cell (B) through the battery cell (B).
  • the frame F is arranged along one direction (Z1 direction), and the neighboring frames F are interposed between the neighboring frames F with the battery cell B interposed therebetween. .
  • the frame F may enclose the outer periphery of the battery cell B to accommodate the battery cell B and may extend along the outer edge of the battery cell B, (FA) can be defined. More specifically, the frame F may extend along the outer edge of the battery cell B across the upper, lower, right and left sides of the battery cell B.
  • the frame F includes a counterpart of an inner area where the battery cell B is accommodated and a counterpart that forms an electrical connection with the battery cell B, for example, a bus bar 15 And a supporting portion FS of an outer region where the wiring board C is supported.
  • the support part FS may be formed on a part of the frame F extending across the upper side of the battery cell B on which the electrode 10 is formed.
  • the frame F surrounds the battery cell B on the inner side and forms a support part FS on the outer side so as to form a counterpart that forms an electrical connection with the battery cell B.
  • the support base for the bar 15 and the wiring board C can be provided.
  • the frame F is arranged along one direction (Z1 direction, hereinafter the same), and the neighboring frames F are interposed between the adjacent frames F with the battery cell B interposed therebetween. have.
  • each of the battery cells B is surrounded by a frame F arranged forward and backward in one direction (Z1 direction), and the frame F arranged forward and backward is surrounded by the battery cells B interposed therebetween
  • the outer shape of the battery cell B may be enclosed to form an outer shape covering the battery cell B, and the battery cell B may be protected as a housing.
  • the array of the frames F arranged in one direction (Z1 direction) can substantially form the appearance of the battery pack, Inside the array, the battery cell B can be enclosed by the frame F and accommodated.
  • the frame F is arranged to alternate with the battery cells B along one direction (Z1 direction, hereinafter the same), and each frame F has a different accommodating capacity for accommodating different neighboring battery cells B (FA).
  • each frame F may include different receiving portions FA for accommodating different battery cells B arranged in the forward and backward directions along one direction (Z1 direction) (FA) can be separated from each other by the partition wall (W).
  • the partition walls W of the frame F can partition different receiving portions FA between different receiving portions FA and block electrical and thermal interference to different battery cells B .
  • the battery cell B may be connected to the bus bar 15 for electrical connection with another neighboring battery cell B and may be connected to the battery cell B such as the voltage or temperature of the battery cell B,
  • the wiring board C may be connected to the battery cell B in order to obtain information and collect status information of a plurality of battery cells B.
  • the bus bar 15 and the wiring board C may correspond to a counterpart forming an electrical connection with the battery cell B, Lt; / RTI >
  • the supporting part FS of the frame F may include a bus bar supporting part FSB supporting the bus bar 15 and a substrate supporting part FSC on which the wiring board C is seated and supported.
  • the bus bar support part FSB and the substrate support part FSC may be formed at different positions of the support part FS.
  • the bus bar support part FSB may be formed at the left edge or the right edge of the frame F to correspond to the position of the electrode 10 of the battery cell B.
  • the substrate support FSC may be formed at the center of the frame F.
  • the wiring board C supported on the substrate support FSC can be disposed at a central position of the plurality of battery cells B to easily collect the state information of the battery cells B collected from a plurality of locations .
  • a sensing unit S for transmitting status information from the battery cell B side may be connected to the wiring board C.
  • the wiring board C is disposed at a central position, The distance of the sensing unit S connected to a plurality of points can be balanced substantially equally and the electrical resistance of the sensing unit S connected to a plurality of points can be balanced to prevent signal distortion.
  • the bus bar support portion FSB and the substrate support portion FSC may be formed to have different widths.
  • the bus bar support portion FSB may be formed relatively narrowly so as not to interfere with the electrical connection between the bus bar 15 and the battery cell B (more specifically, the electrode 10 of the battery cell B) have.
  • the bus bar support portion FSB can support the front and rear ends of the bus bar 15 disposed on both sides of the bent portion 15a of the bus bar 15, To provide isolation.
  • the bus bar support portion FSB supports both ends of the bus bar 15 and supports the bus bar 15 between the adjacent bus bars 15 so that both ends of the bus bar 15 do not come into contact with the ends of the adjacent other bus bars 15. [ To provide electrical isolation.
  • the bus bar support portion FSB does not need to make physical contact with both ends of the bus bar 15, as long as the bus bar support portion FSB is interposed between neighboring bus bars 15 to provide electrical insulation.
  • the bus bar support part FSB may be interposed between neighboring bus bars 15 to prevent electrical contact between neighboring bus bars 15.
  • the bus bars 15 and the electrodes of the battery cells B 10 so as not to narrowly limit the energizing area between them.
  • the bus bar support portion FSB is formed to have a wide width like the substrate support portion FSC, the bus bar support portion FSB is provided between the bus bar 15 and the battery cell B (more specifically, the electrode 10 of the battery cell B) Electrical contact is obstructed and the energizing area between the bus bar 15 and the battery cell B is limited so that the electrical resistance of the entire charge and discharge path is increased and the electrical output may be lowered.
  • the bus bar support part FSB may be formed along the left and right edge positions of the support part FS corresponding to the different electrodes 10 formed on the right and left sides along the width direction of the battery cell B.
  • the frame F may be arranged in a pattern that is laterally reversed along one direction (Z1 direction), so that the bus bar support part FSB along the one direction (Z1 direction) They may be arranged in alternating patterns and arranged along the left and right edges.
  • the bus bar support part FSB may be formed at a left or right side of a substrate supporting part FSC formed at a central position of the frame F, and a plurality of frames F may extend in one direction (Z1 direction)
  • the bus bar supporting part FSB can be arranged on both sides of the substrate supporting part FSC along one direction (Z1 direction).
  • the substrate support FSC may be formed to have a relatively wide width so that the wiring board C can be stably mounted and supported.
  • the wiring board C may be disposed on the substrate supporting portions FSC of the respective frames F and the substrate supporting portions FSC of the respective frames F may be connected to each other along one direction (Z1 direction), and it is possible to provide a support base for supporting the entire wiring board (C). That is, the substrate supporting portions FSC of each frame F support the wiring substrate C, and the substrate supporting portions FSC of the respective frames F are connected to each other along one direction (Z1 direction)
  • a supporting surface extending in a long direction along the longitudinal direction of the wiring substrate C may be formed to provide a stable supporting base of the entire wiring board C.
  • the bus bar 15 is for connecting the neighboring battery cells B to each other.
  • the bus bars 15 connect the adjacent battery cells B in series or in parallel, or may be connected in a serial / parallel combination manner .
  • the bus bar 15 electrically connects the electrodes 10 of the neighboring battery cells B to electrically connect neighboring battery cells B to each other. More specifically, the bus bar 15 can form a parallel connection by connecting the same polarities of neighboring battery cells B, and by connecting the opposite polarities of neighboring battery cells B to each other, Can be formed.
  • the bus bar 15 is disposed to face the electrode 10 formed on the upper surface of the battery cell B and can connect the electrodes 10 of the battery cell B disposed adjacent to each other. More specifically, the bus bar 15 is electrically connected to the electrode 10 of the battery cell B adjacent to both sides of the bus bar 15, around the bent portion 15a formed at the central position of the bus bar 15 ). ≪ / RTI > The bus bar 15 may be formed to connect the electrodes 10 of a pair of adjacent battery cells B to each other.
  • the substrate support FSC may be formed at a central position between the bus bar supports FSB formed on the left and right edges.
  • the wiring board C may be seated on the substrate support FSC.
  • the wiring board C may include a plurality of conductive patterns (not shown) for collecting state information of the battery cell B and transferring the collected state information to a battery management unit (not shown).
  • the wiring board C is connected to a bus bar 15 for electrically coupling neighboring battery cells B to obtain voltage information of the battery cells B.
  • the wiring board C may be connected to a thermistor (not shown) disposed on the upper surface of the battery cell B to obtain temperature information of the battery cell B.
  • the wiring board C collects status information about the status information, for example, voltage and temperature, obtained from the plurality of battery cells B and transfers the collected status information to a separate battery management unit (not shown) Discharge operation of the battery cell B based on the state information obtained through the battery management unit provided with the wiring board C or to control the charge and discharge operations of the battery cell B Can be controlled.
  • a separate battery management unit not shown
  • a flexible sensing unit S may be connected to the wiring board C for mediating signal transmission related to the state information of the battery cell B.
  • FIG. The sensing unit S may be provided in a film form so as to be flexibly deformable.
  • the sensing unit S includes an input port SI connected to the battery cell B side (for example, a bus bar 15 electrically connected to the battery cell B) and an output port SI connected to the wiring board C side. (SO), and may include a connection part (SC) connecting the input port (SI) and the output port (SO).
  • SC connection part
  • the input port SI may correspond to a position where state information of the battery cell B is input from the battery cell B side (for example, the bus bar 15 electrically connected to the battery cell B)
  • the output port SO may correspond to a position where the state information of the battery cell B is output toward the wiring board C.
  • the connecting portion SC connects the input port SI and the output port SO and may be formed in a curved shape including a curved portion and disposed to overlap with each other.
  • the input port SI of the sensing unit S may be connected to the battery cell B side. More specifically, the input port SI of the sensing unit S may be connected to a bus bar 15 that electrically connects neighboring battery cells B, The voltage signal of the battery cell B from the bus bar 15 can be input. Although not shown in the drawings, in another embodiment of the present invention, the input port SI may be connected on a thermistor (not shown) disposed on the upper surface of the battery cell B, The temperature signal of the battery cell B can be input from the thermistor (not shown). In this sense, the input port SI of the sensing unit S may be connected to a signal input unit for acquiring status information of the battery cell B.
  • the signal input unit is connected to the battery cell B in order to acquire status information such as the voltage and the temperature of the battery cell B.
  • the signal input unit may include a bus bar electrically connected to the battery cell B, (Not shown) thermally connected to the battery cell 15 or the battery cell B.
  • the connection portion SC of the sensing portion S connects the input port SI and the output port SO and may be formed in a curved shape including a curved portion and disposed to overlap with each other.
  • the battery pack may include a frame F which is coupled to the battery cell B in the one direction (Z1 direction) in which the battery cells B are arranged to face each other via the battery cells B.
  • the battery cell B can experience swelling that swells along one direction (Z1 direction) in accordance with charging and discharging operations and can be swung along the Z1 direction in one direction (Z1 direction) via the battery cell (B)
  • the frame F is slid in one direction (Z1 direction) to accommodate deformation due to swelling of the battery cell B.
  • connection portions SC are formed in a curved shape that includes the curved portions and are disposed so as to overlap with each other, so that the connection portions SC follow the relative position extension between the input port SI and the output port SO according to the swelling, And the concentration of stress accumulated in the connection portion SC can be reduced.
  • the output port SO of the sensing unit S may be connected to a pad (not shown) of the wiring board C.
  • An electrical signal transmitted through the output port SO of the sensing unit S may be, (Not shown) on the wiring board C through a pad (not shown) of the wiring board C.
  • the output port SO of the sensing unit S may be welded or soldered on a pad (not shown) of the wiring board C or may be coupled using a conductive adhesive or the like.
  • FIG. 1 and 2 denote an end block E and an end plate 210.
  • the end block E and the end plate 210 are connected to a battery cell B to provide a fastening force for physically restricting the plurality of battery cells B constituting the battery pack.
  • Fig. 4 is an exploded perspective view of a part of Fig. 5 is an exploded perspective view for explaining the coupling structure of the sensing unit.
  • 6 and 7 are cross-sectional views taken along the line VI-VI of FIG. 5, wherein different cross-sectional views for illustrating the coupling structure of the sensing portion are shown.
  • the input port SI of the sensing unit S and the signal input unit are connected to each other by a coupling unit CP coupled to each other, Can be formed.
  • the coupling portion CP between the input port SI and the bus bar 15 includes the welded portion WD corresponding to the conductive coupling so that the voltage signal of the bus bar 15 passes through the input port SI, (S).
  • the first and second adhesive portions A1 and A2 may be formed around the welded portion WD of the input port SI.
  • the ultrasonic horn UH having a plurality of protruding tips formed thereon is pressed onto the input port SI,
  • the ultrasonic welding can be performed in such a manner that the input port SI and the bus bar 15 are fusion-bonded to each other by applying ultrasonic vibration to the SI.
  • the first and second adhesive portions A1 and A2 may be sequentially formed around the welded portion WD.
  • the first adhesive portion A1 may be formed of a liquid adhesive
  • the second adhesive portion A2 may be formed of a solid adhesive.
  • the first and second bonding portions A1 and A2 can function to protect the welded portion WD by enclosing the periphery of the welding portion WD in a double manner.
  • the first and second adhesive portions A1 and A2 may surround the welded portion WD in a double manner to insulate the welded portion WD from an external harmful environment such as moisture or oxygen, It is possible to prevent the deterioration of the welded portion WD such as oxidation of the welded portion WD and to prevent the increase in the electrical resistance of the welded portion WD.
  • the coupling part CP between the input port SI and the bus bar 15 includes a welding part WD, a first bonding part A1 applied on the outer surface of the welding part WD, And a second bonding portion A2 surrounding the outer periphery of the first bonding portion A1.
  • the welding portion WD corresponds to a conductive coupling capable of mediating an electrical connection between the input port SI and the bus bar 15.
  • the first and second bonding portions A1 and A2 are welded WD) to protect the welded portion WD, and may correspond to an insulating coupling that does not form a conductive bond.
  • the first bonding portion A1 is formed in a liquid phase and can be injected onto the welded portion WD so as to be applied to the outer surface of the welded portion WD. More specifically, in the input port SI, an injection hole IH for allowing the injection of the liquid adhesive can be formed for forming the first adhesive portion A1.
  • the injection hole IH may be formed at a plurality of positions of the input port SI so that the liquid adhesive injected through the injection hole IH can be uniformly applied along the outer surface of the welded portion WD. And may be formed symmetrically with respect to each other so that the first bonding portion A1 is applied at a uniform position along the outer surface of the welded portion WD. More specifically, the injection holes IH may be formed in the form of slits along the edge of the input port SI and may extend in parallel along a pair of opposing sides of the input port SI.
  • the liquid adhesive is injected through the injection hole IH of the input port SI in the formation of the first adhesive portion A1
  • a liquid adhesive can be applied on the outer surface of the weld WD formed between the input port SI and the bus bar 15 and the solid adhesive A1 is formed as the liquid adhesive coagulates .
  • the first adhesive portion A1 is formed by injecting a liquid adhesive so that it can be uniformly applied on the outer surface of the weld portion WD and can be uniformly applied to the inside of the filling region FF defined by the second adhesive portion A2, So as to cover the welded portion WD.
  • the first bonding portion A1 is formed on the outer surface of the welding portion WD to protect the welding portion WD and may be formed of an insulating adhesive having no conductivity.
  • a conductive adhesive other than an insulating adhesive may be used.
  • more stringent process control is required in the step of injecting the adhesive in order to avoid an electrical short circuit with other surrounding structures .
  • the second adhering portion A2 can form an adhered state between the input port SI and the bus bar 15 even before welding and is particularly formed in a solid state so as to maintain the shape even during welding such as ultrasonic welding,
  • the connection state between the port SI and the bus bar 15 can be maintained.
  • the input port SI may be disposed on the bus bar 15 such that the input port SI is connected to the bus bar 15 via the second bonding portion A2, And the input port SI and the bus bar 15 can be joined to each other via the second adhesive portion A2.
  • the second bonding portion A2 is formed in a solid state, the shape of the second bonding portion A2 can be maintained in spite of repetitive external forces such as ultrasonic vibration, and the bonding state between the input port SI and the bus bar 15 is firmly maintained .
  • the second adhesive portion A2 may be made of a solid adhesive so as to maintain its shape even by ultrasonic vibration, and may be provided as a double-sided tape, for example.
  • the second adhesive portion A2 may be attached along the rim between the input port SI and the bus bar 15. [ More specifically, the second adhesive portion A2 may be attached along the rim of the input port SI so as to surround the periphery of the welded portion WD to be formed between the input port SI and the bus bar 15. [ That is, the second bonding portion A2 and the welding portion WD can be spaced apart from each other via the filling region FF and the filling region FF between the second bonding portion A2 and the welding portion WD, The first bonding portion A1 may be formed.
  • the second adhering portion A2 along the rim of the input port SI, it is possible to form the filling region between the welding portion WD formed around the center position of the input port SI and the second adhering portion A2, (FF) is defined, and a liquid adhesive is injected into the filling region FF defined as described above to form the first bonding portion A1.
  • the second adhesive portion A2 defines a filling region FF filled with a first adhesive portion A1 formed of a liquid adhesive and the liquid adhesive uses a second adhesive portion A2 as a stopper, It may not leak to a position outside the port SI.
  • the first bonding portion A1 may be formed in the filling region between the second bonding portion A2 and the weld portion WD in accordance with the guidance of the second bonding portion A2 surrounding the outer periphery of the first bonding portion A1.
  • a sufficient height can be formed in the filling region FF by limiting the flow so that the second bonding portion A2 does not flow out of the filling region FF and the welding portion WD Can be sufficiently covered.
  • the second adhering portion A2 may be continuously formed along the periphery between the input port SI and the bus bar 15. [ That is, the second adhering portion A2 continuously surrounds the outer edge of the welded portion WD formed between the input port SI and the bus bar 15, thereby forming a gap between the welded portion WD and the second adhering portion A2 A solid filled region FF may be formed and the liquid adhesive of the first adhesive portion A1 filled in the filling region FF may be trapped by the second adhesive portion A2 and may not leak to the outside.
  • the second adhesive portion A2 can be continuously formed along the rim of the input port SI, and the second adhesive portion A2 is continuously formed along the outer edge of the first adhesive portion A1 ,
  • the liquid adhesive of the first bonding portion A1 can be prevented from flowing out, and the formation range of the first bonding portion A1 can be clearly restricted.
  • the second adhesive portion A2 is sandwiched between the input port SI and the bus bar 15 and is connected to the input port SI and the bus bar 15 in spite of the vibration of the ultrasonic horn UH, It is preferable that the adhesive agent has a cushioning property while being a solid adhesive so as to maintain the bonding state between the bars 15.
  • the second adhesive portion A2 may be provided as a double-sided tape. Since the input port SI and the bus bar 15 form a conductive connection through the welded portion WD, the second bonded portion A2 surrounding and protecting the welded portion WD is connected to the input port SI It is possible to form an insulating bond between the bus bars 15. If the second bonding portion A2 to which ultrasonic vibration is applied is formed of a conductive bond, more stringent process control may be required to prevent electrical short-circuiting with other peripheral structures.
  • the coupling between the input port SI and the bus bar 15 may be performed in the following order.
  • the input port SI is arranged on the bus bar 15 in such a manner that the input port SI is overlapped with the input port SI via the second bonding portion A2 between the input port SI and the bus bar 15.
  • the bus bar 15 are connected to each other.
  • Ultrasonic vibration is applied to the bus bar 15 and the input port SI to perform ultrasonic welding.
  • an ultrasonic welding portion WD can be formed between the input port SI and the bus bar 15 by providing the ultrasonic vibration by pressing the ultrasonic horn UH against the upper surface of the input port SI , And an imprinting station of the ultrasonic horn UH may be formed on the upper surface of the input port SI.
  • the upper surface of the input port SI may be a surface opposite to the welded portion WD of the input port SI, and an indentation mark by ultrasonic welding may be formed on the upper surface of the input port SI. have. Thereafter, the liquid adhesive is injected through the injection hole IH of the input port SI to form the first adhesive portion A1 coated on the outer surface of the welded portion WD.
  • the liquid adhesive When the liquid adhesive is injected for forming the first adhesive portion A1, the liquid adhesive can be applied on the upper surface of the input port SI, and the liquid adhesive applied on the input port SI Permeates between the input port SI and the bus bar 15 through the injection hole IH of the input port SI and penetrates into the filling region FF between the second adhering portion A2 and the welded portion WD It is possible to cover the welded portion WD.
  • the liquid adhesive (first adhesive portion A1) is filled in the filling port (SI) in such a manner that the liquid adhesive (first adhesive portion A1) is simply applied to the upper surface of the input port SI through the injection hole IH formed in the input port SI
  • the adhesive agent (first adhesive portion A1) in the liquid state can be adhered to the input port (SI) by the second adhesive portion A2 attached along the rim of the input port SI, SI to a height sufficient to cover the weld WD without flowing out to an external position outside the welded portion WD.
  • the second adhesive portion A2 defines the position where the first adhesive portion A1 is formed, and prevents the liquid adhesive forming the first adhesive portion A1 from flowing out to an external position out of the input port SI It can serve as a dam that is confined inside the filling area (FF).
  • the first bonding portion A1 includes not only the filling region FF between the input port SI and the signal input portion (for example, the bus bar 15 electrically connected to the battery cell B) And may also be formed on the upper surface of the input port SI.
  • the upper surface of the input port SI may be a surface opposite to the welded portion WD of the input port SI and the first adhesive portion A1 may be formed on the upper surface of the input port SI. have.
  • the input port SI of the sensing unit S may be coupled to a portion of the bus bar 15 disposed on the coupling support CB and may be relatively fixed by the coupling support CB And may be coupled to a portion of the bus bar 15 held at a high level.
  • the coupling between the input port SI and the bus bar 15 can be physically supported by the coupling support CB and the portion of the bus bar 15 associated with the input port SI can be supported by a relatively high It is possible to reduce the interference with other components in the formation of the first and second adhesive portions A1 and A2 including the ultrasonic welding between the input port SI and the bus bar 15, The ease of the process can be improved.
  • the coupling support CB may be formed on the bus bar support part FSB and integrally formed with the bus bar support part FSB.
  • Fig. 8 is an exploded perspective view of the sensing unit shown in Fig.
  • the sensing unit S includes a conductive line S10 for mediating signal transmission relating to state information of the battery cell B, a conductive line S10 for insulation of the conductive line S10, (Not shown).
  • the conductive line S10 may be formed in a copper foil pattern, and an insulating film S20 may be disposed to embed the conductive line S10 so that an electric signal transmitted through the conductive line S10 is supplied from the outside It can be insulated.
  • the input port SI of the sensing unit S is formed with an injection hole IH for allowing injection of the liquid adhesive corresponding to the first adhesive portion A1.
  • the injection hole IH may be formed in the conductive line S10 and the insulating film S20 may be formed to cover the conductive line S10 formed with the injection hole IH, An input port SI may be provided.
  • the periphery of the injection hole IH can be surrounded by the insulating film S20, and the remaining liquid adhesive (corresponding to the first adhesion portion A1) flows around the injection hole IH to other peripheral structures It is possible to block the flow of the liquid adhesive (corresponding to the first bonding portion A1).
  • the present invention can be applied to various devices using a battery pack as an energy source capable of charging and discharging and a battery pack as a driving power source.

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  • Chemical Kinetics & Catalysis (AREA)
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  • Engineering & Computer Science (AREA)
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Abstract

According to the present invention, a battery pack is disclosed. The battery pack comprises: a battery cell connected with a signal input unit for acquiring state information; a wiring substrate for collecting the state information of the battery cell; an input port coupled to the signal input unit; an output port coupled to the wiring substrate so as to output the state information of the battery cell; and a sensing unit including a connection part between the input port and the output port, and a coupling unit between the signal input unit and the input port include a welding part, a first bonding part coated on an outer surface of the welding part, and a second bonding part encompassing an outer part of the first bonding part. The present invention includes the battery pack having an improved coupling structure between an input point and the battery cell so as to increase electrical reliability with respect to the input point at which an electrical signal related to the state information of the battery cell is input.

Description

배터리 팩Battery pack
본 발명은 배터리 팩에 관한 것이다.The present invention relates to a battery pack.
통상적으로 이차 전지는 충전이 불가능한 일차 전지와는 달리, 충전 및 방전이 가능한 전지이다. 이차 전지는 모바일 기기, 전기 자동차, 하이브리드 자동차, 전기 자전거, 무정전 전원공급장치(uninterruptible power supply) 등의 에너지원으로 사용되며, 적용되는 외부기기의 종류에 따라 단일 배터리 셀의 형태로 사용되기도 하고, 다수의 배터리 셀들을 연결하여 하나의 단위로 묶은 배터리 팩의 형태로 사용되기도 한다.Generally, a secondary battery is a battery capable of charging and discharging, unlike a primary battery which can not be charged. The secondary battery is used as an energy source for a mobile device, an electric vehicle, a hybrid vehicle, an electric bicycle, an uninterruptible power supply, etc., and may be used in the form of a single battery cell depending on the type of an external device. Or may be used in the form of a battery pack in which a plurality of battery cells are connected to one unit.
휴대폰과 같은 소형 모바일 기기는 단일 전지의 출력과 용량으로 소정시간 동안 작동이 가능하지만, 전력소모가 많은 전기 자동차, 하이브리드 자동차와 같이 장시간 구동, 고전력 구동이 필요한 경우에는 출력 및 용량의 문제로 배터리 팩이 선호되며, 배터리 팩은 내장된 배터리 셀의 개수에 따라 출력전압이나 출력전류를 높일 수 있다.A small mobile device such as a mobile phone can operate for a predetermined time with the output and capacity of a single battery. However, in the case of long-time driving such as an electric vehicle or a hybrid vehicle with high power consumption, And the battery pack can increase the output voltage or the output current according to the number of the built-in battery cells.
본 발명의 일 실시형태는, 배터리 셀의 상태 정보에 관한 전기적인 신호가 입력되는 입력 개소에 대해, 전기적인 신뢰성을 높일 수 있도록 입력 개소와 배터리 셀 측 간의 결합 구조가 개선된 배터리 팩을 포함한다.An embodiment of the present invention includes a battery pack in which a coupling structure between an input point and a battery cell side is improved so that electrical reliability can be improved at an input point where an electrical signal relating to state information of the battery cell is input .
본 발명의 배터리 팩은,In the battery pack of the present invention,
상태 정보를 취득하기 위한 신호 입력부가 연결된 배터리 셀;A battery cell to which a signal input unit for acquiring status information is connected;
상기 배터리 셀의 상태 정보를 취합하기 위한 배선 기판; 및A wiring board for collecting status information of the battery cell; And
상기 신호 입력부에 결합되는 입력 포트와, 상기 배선 기판에 결합되어 상기 배터리 셀의 상태 정보가 출력되는 출력 포트와, 상기 입력 포트와 출력 포트 사이의 연결부를 포함하는 센싱부를 포함하되, An input port coupled to the signal input unit; an output port coupled to the wiring board to output status information of the battery cell; and a sensing unit including a connection unit between the input port and the output port,
상기 신호 입력부와 입력 포트 사이의 결합부는, And the coupling portion between the signal input portion and the input port,
용접부;Weld;
상기 용접부의 외면 상에 도포된 제1 접착부; 및A first adhesive portion applied on an outer surface of the welded portion; And
상기 제1 접착부의 외곽을 둘러싸는 제2 접착부를 포함한다.And a second adhesive portion surrounding the outer periphery of the first adhesive portion.
본 발명에 의하면, 배터리 셀 측과의 도전성 연결을 통하여 배터리 셀의 상태 정보를 입수하고 취합된 상태 정보에 근거하여 배터리 셀의 충, 방전 동작을 제어하는 구성에 있어, 배터리 셀 측과의 도전성 연결 부분이 변질되거나 또는 전기 저항의 증가 등으로 배터리 셀의 상태 정보에 관한 전기적인 신호가 왜곡되지 않도록 배터리 셀 측과의 도전성 연결 부분을 이중으로 둘러싸서 외부 유해환경으로부터 보호함으로써, 도전성 연결 부분의 전기적인 신뢰성을 높일 수 있는 배터리 팩이 제공된다.According to the present invention, in a configuration for acquiring status information of a battery cell through a conductive connection with a battery cell side and controlling charging and discharging operations of the battery cell based on collected status information, The conductive connection portion with the battery cell side is doubly enclosed and protected from the external harmful environment so that the electrical signal relating to the state information of the battery cell is not distorted due to the deterioration of the part or the increase of the electric resistance, A battery pack capable of improving reliability can be provided.
도 1에는 본 발명의 일 실시형태에 따른 배터리 팩의 분해 사시도가 도시되어 있다. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
도 2에는 도 1에 도시된 배터리 팩의 일부에 대한 분해 사시도가 도시되어 있다. Fig. 2 is an exploded perspective view of a part of the battery pack shown in Fig.
도 3에는 도 1의 배터리 팩의 일부를 상방에서 도시한 도면이 도시되어 있다.Fig. 3 is a view showing a part of the battery pack of Fig. 1 from above.
도 4에는 도 3의 일부에 대한 분해 사시도가 도시되어 있다. Fig. 4 is an exploded perspective view of a part of Fig.
도 5에는 센싱부의 결합 구조를 설명하기 위한 분해 사시도가 도시되어 있다.5 is an exploded perspective view for explaining the coupling structure of the sensing unit.
도 6 및 도 7에는, 도 5의 VI-VI 선을 따라 취한 단면도들로서, 센싱부의 결합 구조를 설명하기 위한 서로 다른 단면도들이 도시되어 있다.6 and 7 are cross-sectional views taken along the line VI-VI of FIG. 5, wherein different cross-sectional views for illustrating the coupling structure of the sensing portion are shown.
도 8에는, 도 4에 도시된 센싱부의 분해 사시도가 도시되어 있다.Fig. 8 is an exploded perspective view of the sensing unit shown in Fig.
본 발명의 배터리 팩은,In the battery pack of the present invention,
상태 정보를 취득하기 위한 신호 입력부가 연결된 배터리 셀;A battery cell to which a signal input unit for acquiring status information is connected;
상기 배터리 셀의 상태 정보를 취합하기 위한 배선 기판; 및A wiring board for collecting status information of the battery cell; And
상기 신호 입력부에 결합되는 입력 포트와, 상기 배선 기판에 결합되어 상기 배터리 셀의 상태 정보가 출력되는 출력 포트와, 상기 입력 포트와 출력 포트 사이의 연결부를 포함하는 센싱부를 포함하되, An input port coupled to the signal input unit; an output port coupled to the wiring board to output status information of the battery cell; and a sensing unit including a connection unit between the input port and the output port,
상기 신호 입력부와 입력 포트 사이의 결합부는, And the coupling portion between the signal input portion and the input port,
용접부;Weld;
상기 용접부의 외면 상에 도포된 제1 접착부; 및A first adhesive portion applied on an outer surface of the welded portion; And
상기 제1 접착부의 외곽을 둘러싸는 제2 접착부를 포함한다. And a second adhesive portion surrounding the outer periphery of the first adhesive portion.
예를 들어, 상기 제1, 제2 접착부는 상기 용접부를 이중으로 둘러쌀 수 있다. For example, the first and second adhesive portions may double-surround the welded portion.
예를 들어, 상기 제1 접착부는 액상 접착제의 응고에 의해 형성될 수 있다. For example, the first bonding portion may be formed by solidification of the liquid bonding agent.
예를 들어, 상기 제2 접착부는 고상 접착제에 의해 형성될 수 있다. For example, the second adhesive portion may be formed by a solid-state adhesive.
예를 들어, 상기 제2 접착부는 양면 테이프를 포함할 수 있다. For example, the second adhesive portion may include a double-sided tape.
예를 들어, 상기 신호 입력부와 입력 포트는, 상기 입력 포트의 테두리를 따라 부착된 제2 접착부를 개재하여 서로 마주하게 결합될 수 있다. For example, the signal input unit and the input port may be coupled to each other via a second adhesive portion attached along the rim of the input port.
예를 들어, 상기 제2 접착부는, 상기 신호 입력부와 입력 포트 사이에서 상기 용접부의 외곽을 연속적으로 둘러쌀 수 있다. For example, the second bonding portion may continuously surround the outer periphery of the welded portion between the signal input portion and the input port.
예를 들어, 상기 제1 접착부는, 상기 용접부와 상기 제2 접착부 사이의 충진 영역 내부에 채워져 있을 수 있다. For example, the first bonding portion may be filled in the filling region between the welding portion and the second bonding portion.
예를 들어, 상기 입력 포트에는, 제1 접착부를 형성하는 액상 접착제의 주입을 허용하기 위한 주입 홀이 형성될 수 있다. For example, the input port may be provided with an injection hole for allowing the injection of the liquid adhesive forming the first adhesive portion.
예를 들어, 상기 주입 홀은 상기 입력 포트의 서로 마주하는 변부를 따라 나란하게 형성된 슬릿으로 형성될 수 있다. For example, the injection holes may be formed as slits formed in parallel with the opposing sides of the input ports.
예를 들어, 상기 제1 접착부는, 상기 용접부와 반대되는 입력 포트의 상면에도 형성될 수 있다.For example, the first bonding portion may be formed on the upper surface of the input port opposite to the welding portion.
예를 들어, 상기 제1, 제2 접착부는 전기 절연성일 수 있다. For example, the first and second adhesive portions may be electrically insulative.
예를 들어, 상기 용접부는 초음파 용접부 일 수 있다. For example, the welded portion may be an ultrasonic welded portion.
예를 들어, 상기 용접부와 반대되는 입력 포트의 상면에는 초음파 혼의 압입 자국이 형성될 수 있다.For example, a push-in mark of an ultrasonic horn may be formed on the upper surface of the input port opposite to the welding portion.
예를 들어, 상기 신호 입력부는, 서로 이웃한 배터리 셀을 전기적으로 연결하기 위한 버스 바이고, For example, the signal input unit may be a bus for electrically connecting neighboring battery cells,
상기 버스 바에 결합된 입력 포트에는 배터리 셀의 전압 신호가 입력될 수 있다.A voltage signal of the battery cell may be input to the input port coupled to the bus bar.
이하, 첨부된 도면들을 참조하여, 본 발명의 바람직한 실시형태에 관한 배터리 팩에 대해 설명하기로 한다.Hereinafter, a battery pack according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
도 1에는 본 발명의 일 실시형태에 따른 배터리 팩의 분해 사시도가 도시되어 있다. 도 2에는 도 1에 도시된 배터리 팩의 일부에 대한 분해 사시도가 도시되어 있다. 도 3에는 도 1의 배터리 팩의 일부를 상방에서 도시한 도면이 도시되어 있다.1 is an exploded perspective view of a battery pack according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of a part of the battery pack shown in Fig. Fig. 3 is a view showing a part of the battery pack of Fig. 1 from above.
도면들을 함께 참조하면, 본 발명의 배터리 팩은, 배터리 셀(B)과, 배터리 셀(B)과 함께 일 방향(Z1 방향, 이하 같음)을 따라 배열되되, 상기 배터리 셀(B)을 사이에 개재하여 서로 마주하게 결합되는 프레임(F)과, 상기 프레임(F) 상에 안착되는 것으로, 상기 배터리 셀(B)로부터 배터리 셀(B)의 상태 정보를 취합하기 위한 배선 기판(C)을 포함한다.Referring to the drawings, the battery pack of the present invention includes a battery cell B and a battery cell B arranged along one direction (Z1 direction, hereinafter the same) with the battery cell B, (C) for collecting state information of the battery cell (B) from the battery cell (B), which is seated on the frame (F) do.
상기 배터리 셀(B)은 일 방향(Z1 방향)을 따라 배열될 수 있다. 그리고, 상기 배터리 셀(B)과 함께, 배터리 셀(B)을 사이에 개재하여 결합되도록 일 방향(Z1 방향)을 따라 다수의 프레임(F)이 배열될 수 있다. 예를 들어, 상기 프레임(F)은 일 방향(Z1 방향)을 따라 배열되되, 서로 이웃한 프레임(F) 사이마다 배터리 셀(B)을 개재하고 서로 이웃한 프레임(F)끼리 마주하게 결합될 수 있다.The battery cells B may be arranged along one direction (Z1 direction). A plurality of frames F may be arranged along one direction (Z1 direction) so as to be coupled with the battery cell (B) through the battery cell (B). For example, the frame F is arranged along one direction (Z1 direction), and the neighboring frames F are interposed between the neighboring frames F with the battery cell B interposed therebetween. .
상기 프레임(F)은, 배터리 셀(B)을 수용하도록 배터리 셀(B)의 외곽을 둘러쌀 수 있으며, 배터리 셀(B)의 외연을 따라 연장되면서, 배터리 셀(B)이 수용되는 수용부(FA)를 정의할 수 있다. 보다 구체적으로, 상기 프레임(F)은, 배터리 셀(B)의 상측, 하측, 좌우 측을 가로지르며 배터리 셀(B)의 외연을 따라 연장될 수 있다. 상기 프레임(F)은, 배터리 셀(B)이 수용되는 내측 영역의 수용부(FA)와, 상기 배터리 셀(B)과의 전기적인 연결을 형성하는 상대물, 예를 들어, 버스 바(15)와 배선 기판(C)이 지지되는 외측 영역의 지지부(FS)를 포함할 수 있다. 예를 들어, 상기 지지부(FS)는, 전극(10)이 형성된 배터리 셀(B)의 상측을 가로질러 연장되는 프레임(F)의 일부에 형성될 수 있다. 상기 프레임(F)은, 내측으로는 배터리 셀(B)을 둘러싸면서 외측으로는 지지부(FS)를 형성하여, 배터리 셀(B)과의 전기적인 연결을 형성하는 상대물, 예를 들어, 버스 바(15)와 배선 기판(C)에 대한 지지 기반을 제공할 수 있다. The frame F may enclose the outer periphery of the battery cell B to accommodate the battery cell B and may extend along the outer edge of the battery cell B, (FA) can be defined. More specifically, the frame F may extend along the outer edge of the battery cell B across the upper, lower, right and left sides of the battery cell B. The frame F includes a counterpart of an inner area where the battery cell B is accommodated and a counterpart that forms an electrical connection with the battery cell B, for example, a bus bar 15 And a supporting portion FS of an outer region where the wiring board C is supported. For example, the support part FS may be formed on a part of the frame F extending across the upper side of the battery cell B on which the electrode 10 is formed. The frame F surrounds the battery cell B on the inner side and forms a support part FS on the outer side so as to form a counterpart that forms an electrical connection with the battery cell B. For example, The support base for the bar 15 and the wiring board C can be provided.
상기 프레임(F)은 일 방향(Z1 방향, 이하 같음)을 따라 배열되되, 서로 이웃한 프레임(F) 사이마다 배터리 셀(B)을 개재하고 서로 이웃한 프레임(F)끼리 마주하게 결합될 수 있다. 환언하면, 각각의 배터리 셀(B)은 일 방향(Z1 방향)을 따라 전후로 배치되는 프레임(F)에 의해 둘러싸이고, 전후로 배치되는 프레임(F)은 그들 사이에 개재된 배터리 셀(B)의 외곽을 함께 둘러싸면서 배터리 셀(B)을 커버하는 외형을 형성하며, 배터리 셀(B)을 보호하는 하우징 기능을 할 수 있다. 다수의 배터리 셀(B)을 포함하는 전체 배터리 팩에 있어, 일 방향(Z1 방향)으로 배열되는 프레임(F)의 어레이는, 실질적으로 배터리 팩의 외관을 형성할 수 있고, 프레임(F)의 어레이 내부에서, 배터리 셀(B)은 프레임(F)에 의해 둘러싸여 수용될 수 있다.The frame F is arranged along one direction (Z1 direction, hereinafter the same), and the neighboring frames F are interposed between the adjacent frames F with the battery cell B interposed therebetween. have. In other words, each of the battery cells B is surrounded by a frame F arranged forward and backward in one direction (Z1 direction), and the frame F arranged forward and backward is surrounded by the battery cells B interposed therebetween The outer shape of the battery cell B may be enclosed to form an outer shape covering the battery cell B, and the battery cell B may be protected as a housing. In the entire battery pack including a plurality of battery cells B, the array of the frames F arranged in one direction (Z1 direction) can substantially form the appearance of the battery pack, Inside the array, the battery cell B can be enclosed by the frame F and accommodated.
상기 프레임(F)은 일 방향(Z1 방향, 이하 같음)을 따라 배터리 셀(B)과 교번되도록 배열되며, 각각의 프레임(F)은 서로 이웃한 다른 배터리 셀(B)을 수용하는 서로 다른 수용부(FA)를 포함할 수 있다. 예를 들어, 각각의 프레임(F)은 일 방향(Z1 방향)을 따라 전후로 배열된 서로 다른 배터리 셀(B)을 수용하는 서로 다른 수용부(FA)를 포함할 수 있으며, 상기 서로 다른 수용부(FA)는 격벽(W)에 의해 서로로부터 분리될 수 있다. 상기 프레임(F)의 격벽(W)은, 서로 다른 수용부(FA) 사이에서 서로 다른 수용부(FA)를 구획해줄 수 있으며, 서로 다른 배터리 셀(B)에 대한 전기적 및 열적 간섭을 차단해줄 수 있다.The frame F is arranged to alternate with the battery cells B along one direction (Z1 direction, hereinafter the same), and each frame F has a different accommodating capacity for accommodating different neighboring battery cells B (FA). For example, each frame F may include different receiving portions FA for accommodating different battery cells B arranged in the forward and backward directions along one direction (Z1 direction) (FA) can be separated from each other by the partition wall (W). The partition walls W of the frame F can partition different receiving portions FA between different receiving portions FA and block electrical and thermal interference to different battery cells B .
상기 배터리 셀(B)은 이웃한 다른 배터리 셀(B)과의 전기적인 접속을 위하여 버스 바(15)에 연결될 수 있으며, 배터리 셀(B)의 전압이나 온도와 같은 배터리 셀(B)의 상태 정보를 입수하고, 다수의 배터리 셀(B)의 상태 정보를 취합하기 위하여, 상기 배터리 셀(B)에는 배선 기판(C)이 연결될 수 있다. 이때, 상기 버스 바(15) 및 배선 기판(C)은, 배터리 셀(B)과의 전기적인 연결을 형성하는 상대물에 해당될 수 있고, 이러한 상대물은 프레임(F)의 지지부(FS) 상에 지지될 수 있다. The battery cell B may be connected to the bus bar 15 for electrical connection with another neighboring battery cell B and may be connected to the battery cell B such as the voltage or temperature of the battery cell B, The wiring board C may be connected to the battery cell B in order to obtain information and collect status information of a plurality of battery cells B. [ At this time, the bus bar 15 and the wiring board C may correspond to a counterpart forming an electrical connection with the battery cell B, Lt; / RTI >
상기 프레임(F)의 지지부(FS)는, 상기 버스 바(15)가 지지되는 버스 바 지지부(FSB)와, 상기 배선 기판(C)이 안착 지지되는 기판 지지부(FSC)를 포함할 수 있다. 상기 버스 바 지지부(FSB)와 기판 지지부(FSC)는, 지지부(FS)의 서로 다른 위치에 형성될 수 있다. 예를 들어, 상기 버스 바 지지부(FSB)는 프레임(F)의 좌측 가장자리 또는 우측 가장자리 위치에 형성되어 배터리 셀(B)의 전극(10) 위치와 대응되게 형성될 수 있다. 상기 기판 지지부(FSC)는, 프레임(F)의 중앙 위치에 형성될 수 있다. 상기 기판 지지부(FSC) 상에 지지되는 배선 기판(C)은 다수의 배터리 셀(B)의 중앙 위치에 배치되어 다수의 개소로부터 취합되는 배터리 셀(B)의 상태 정보를 용이하게 취합할 수 있다. 상기 배선 기판(C)에는, 배터리 셀(B) 측으로부터의 상태 정보를 전달하기 위한 센싱부(S)가 연결될 수 있으며, 상기 배선 기판(C)은 중앙 위치에 배치되어, 상기 배선 기판(C)으로부터 다수의 개소로 연결되는 센싱부(S)의 거리가 대체로 균등하게 균형을 이룰 수 있고, 다수의 개소로 연결된 센싱부(S)의 전기 저항이 균형을 이루어 신호 왜곡을 방지할 수 있다.The supporting part FS of the frame F may include a bus bar supporting part FSB supporting the bus bar 15 and a substrate supporting part FSC on which the wiring board C is seated and supported. The bus bar support part FSB and the substrate support part FSC may be formed at different positions of the support part FS. For example, the bus bar support part FSB may be formed at the left edge or the right edge of the frame F to correspond to the position of the electrode 10 of the battery cell B. The substrate support FSC may be formed at the center of the frame F. [ The wiring board C supported on the substrate support FSC can be disposed at a central position of the plurality of battery cells B to easily collect the state information of the battery cells B collected from a plurality of locations . A sensing unit S for transmitting status information from the battery cell B side may be connected to the wiring board C. The wiring board C is disposed at a central position, The distance of the sensing unit S connected to a plurality of points can be balanced substantially equally and the electrical resistance of the sensing unit S connected to a plurality of points can be balanced to prevent signal distortion.
상기 버스 바 지지부(FSB)와 기판 지지부(FSC)는, 서로 다른 폭으로 형성될 수 있다. 예를 들어, 상기 버스 바 지지부(FSB)는, 버스 바(15)와 배터리 셀(B, 보다 구체적으로, 배터리 셀 B의 전극 10) 간의 전기적인 연결을 방해하지 않도록 상대적으로 협폭으로 형성될 수 있다. 상기 버스 바 지지부(FSB)는, 버스 바(15)의 절곡부(15a)를 중심으로 양편으로 배치된 버스 바(15)의 전후 양단부를 지지해줄 수 있고, 서로 이웃한 버스 바(15) 사이에서 절연을 제공할 수 있다. 상기 버스 바 지지부(FSB)는 버스 바(15)의 양단부를 지지하고, 버스 바(15)의 양단부가 인접한 다른 버스 바(15)의 단부와 접촉하지 않도록, 서로 이웃한 버스 바(15) 사이에서 전기적인 절연을 제공할 수 있다. 상기 버스 바 지지부(FSB)는, 서로 이웃한 버스 바(15) 사이에 개재되어 전기적인 절연을 제공하는 한도에서, 버스 바(15)의 양단부와 물리적인 접촉을 할 필요는 없다. 상기 버스 바 지지부(FSB)는 이웃한 버스 바(15) 간의 전기적인 접촉을 방지하도록 이웃한 버스 바(15) 사이에 개재되면 충분하며, 버스 바(15)와 배터리 셀(B)의 전극(10) 간의 통전 면적을 협소하게 제한하지 않도록 협폭으로 형성될 수 있다. 만일 버스 바 지지부(FSB)가 기판 지지부(FSC)와 같이 광폭으로 형성되면, 버스 바 지지부(FSB)에 의해 버스 바(15)와 배터리 셀(B, 보다 구체적으로 배터리 셀 B의 전극 10) 간의 전기적인 접촉이 방해되고 버스 바(15)와 배터리 셀(B) 간의 통전 면적이 협소하게 제한되어, 전체적인 충, 방전 패스의 전기적인 저항이 증가하게 되고, 전기적인 출력이 떨어질 수 있다.The bus bar support portion FSB and the substrate support portion FSC may be formed to have different widths. For example, the bus bar support portion FSB may be formed relatively narrowly so as not to interfere with the electrical connection between the bus bar 15 and the battery cell B (more specifically, the electrode 10 of the battery cell B) have. The bus bar support portion FSB can support the front and rear ends of the bus bar 15 disposed on both sides of the bent portion 15a of the bus bar 15, To provide isolation. The bus bar support portion FSB supports both ends of the bus bar 15 and supports the bus bar 15 between the adjacent bus bars 15 so that both ends of the bus bar 15 do not come into contact with the ends of the adjacent other bus bars 15. [ To provide electrical isolation. The bus bar support portion FSB does not need to make physical contact with both ends of the bus bar 15, as long as the bus bar support portion FSB is interposed between neighboring bus bars 15 to provide electrical insulation. The bus bar support part FSB may be interposed between neighboring bus bars 15 to prevent electrical contact between neighboring bus bars 15. The bus bars 15 and the electrodes of the battery cells B 10 so as not to narrowly limit the energizing area between them. If the bus bar support portion FSB is formed to have a wide width like the substrate support portion FSC, the bus bar support portion FSB is provided between the bus bar 15 and the battery cell B (more specifically, the electrode 10 of the battery cell B) Electrical contact is obstructed and the energizing area between the bus bar 15 and the battery cell B is limited so that the electrical resistance of the entire charge and discharge path is increased and the electrical output may be lowered.
상기 버스 바 지지부(FSB)는, 상기 배터리 셀(B)의 폭 방향을 따라 좌우측에 형성된 서로 다른 전극(10)에 대응하여 지지부(FS)의 좌측 가장자리 및 우측 가장자리 위치를 따라 형성될 수 있다. 상기 프레임(F)은, 일 방향(Z1 방향)을 따라 좌우 반전되는 패턴으로 배열될 수 있으며, 이에 따라, 상기 일 방향(Z1 방향)을 따라 상기 버스 바 지지부(FSB)는, 좌우 가장자리를 따라 서로 교번되는 패턴으로 배열되어 좌측 및 우측 가장자리를 따라 배치될 수 있다. 예를 들어, 상기 버스 바 지지부(FSB)는 프레임(F)의 중앙 위치에 형성된 기판 지지부(FSC)의 좌우 어느 일 편에 형성될 수 있으며, 다수의 프레임(F)이 일 방향(Z1 방향)을 따라 좌우 반전되는 패턴으로 배열됨에 따라 상기 버스 바 지지부(FSB)는 일 방향(Z1 방향)을 따라 기판 지지부(FSC)의 좌우 양편으로 배열될 수 있다. The bus bar support part FSB may be formed along the left and right edge positions of the support part FS corresponding to the different electrodes 10 formed on the right and left sides along the width direction of the battery cell B. The frame F may be arranged in a pattern that is laterally reversed along one direction (Z1 direction), so that the bus bar support part FSB along the one direction (Z1 direction) They may be arranged in alternating patterns and arranged along the left and right edges. For example, the bus bar support part FSB may be formed at a left or right side of a substrate supporting part FSC formed at a central position of the frame F, and a plurality of frames F may extend in one direction (Z1 direction) The bus bar supporting part FSB can be arranged on both sides of the substrate supporting part FSC along one direction (Z1 direction).
상기 기판 지지부(FSC)는, 상기 배선 기판(C)이 안정적으로 안착 및 지지될 수 있도록 상대적으로 광폭으로 형성될 수 있다. 상기 배선 기판(C)은, 각 프레임(F)의 기판 지지부(FSC) 상에 배치될 수 있고, 일 방향(Z1 방향)을 따라 각 프레임(F)의 기판 지지부(FSC)가 서로 연결되면서 일 방향(Z1 방향)을 따라 길게 연장되는 지지면을 형성할 수 있으며, 전체 배선 기판(C)을 지지하기 위한 지지 기반을 제공할 수 있다. 즉, 각 프레임(F)의 기판 지지부(FSC)는 배선 기판(C)을 지지하되, 각 프레임(F)의 기판 지지부(FSC)가 일 방향(Z1 방향)을 따라 서로 연결되면서 일 방향(Z1 방향)을 따라 길게 연장된 지지면이 형성되어 전체 배선 기판(C)의 안정적인 지지 기반을 제공할 수 있다.The substrate support FSC may be formed to have a relatively wide width so that the wiring board C can be stably mounted and supported. The wiring board C may be disposed on the substrate supporting portions FSC of the respective frames F and the substrate supporting portions FSC of the respective frames F may be connected to each other along one direction (Z1 direction), and it is possible to provide a support base for supporting the entire wiring board (C). That is, the substrate supporting portions FSC of each frame F support the wiring substrate C, and the substrate supporting portions FSC of the respective frames F are connected to each other along one direction (Z1 direction) A supporting surface extending in a long direction along the longitudinal direction of the wiring substrate C may be formed to provide a stable supporting base of the entire wiring board C.
상기 버스 바(15)는, 서로 이웃한 배터리 셀(B)을 전기적으로 연결하기 위한 것으로, 서로 이웃한 배터리 셀(B)을 직렬로 접속하거나 병렬로 접속하거나 또는 직렬/병렬의 혼합 방식으로 연결할 수 있다. 상기 버스 바(15)는, 서로 이웃한 배터리 셀(B)의 전극(10)을 전기적으로 결속함으로써 서로 이웃한 배터리 셀(B)을 전기적으로 연결할 수 있다. 보다 구체적으로, 상기 버스 바(15)는, 서로 이웃한 배터리 셀(B)의 같은 극성끼리 연결함으로써 병렬 연결을 형성할 수 있고, 서로 이웃한 배터리 셀(B)의 반대 극성끼리 연결함으로써 직렬 연결을 형성할 수 있다.The bus bar 15 is for connecting the neighboring battery cells B to each other. The bus bars 15 connect the adjacent battery cells B in series or in parallel, or may be connected in a serial / parallel combination manner . The bus bar 15 electrically connects the electrodes 10 of the neighboring battery cells B to electrically connect neighboring battery cells B to each other. More specifically, the bus bar 15 can form a parallel connection by connecting the same polarities of neighboring battery cells B, and by connecting the opposite polarities of neighboring battery cells B to each other, Can be formed.
상기 버스 바(15)는, 배터리 셀(B)의 상면에 형성된 전극(10)과 마주하도록 배치되고, 서로 이웃하게 배치된 배터리 셀(B)의 전극(10)끼리를 서로 연결해줄 수 있다. 보다 구체적으로, 상기 버스 바(15)는, 버스 바(15)의 중앙 위치에 형성된 절곡부(15a)를 중심으로 버스 바(15)의 양편이 서로 이웃한 배터리 셀(B)의 전극(10)과 마주하도록 결합될 수 있다. 상기 버스 바(15)는, 서로 이웃한 한 쌍의 배터리 셀(B)의 전극(10)끼리를 연결하도록 다수로 형성될 수 있다.The bus bar 15 is disposed to face the electrode 10 formed on the upper surface of the battery cell B and can connect the electrodes 10 of the battery cell B disposed adjacent to each other. More specifically, the bus bar 15 is electrically connected to the electrode 10 of the battery cell B adjacent to both sides of the bus bar 15, around the bent portion 15a formed at the central position of the bus bar 15 ). ≪ / RTI > The bus bar 15 may be formed to connect the electrodes 10 of a pair of adjacent battery cells B to each other.
상기 기판 지지부(FSC)는, 좌우 가장자리에 형성된 버스 바 지지부(FSB) 사이의 중앙 위치에 형성될 수 있다. 상기 기판 지지부(FSC) 상에는 배선 기판(C)이 안착될 수 있다. 상기 배선 기판(C)은, 배터리 셀(B)의 상태 정보를 취합하고, 취합된 상태 정보를 배터리 관리부(미도시)로 전달하기 위한 다수의 도전 패턴(미도시)을 포함할 수 있다. 상기 배선 기판(C)은, 서로 이웃한 배터리 셀(B)을 전기적으로 결속하기 위한 버스 바(15)와 연결되어 배터리 셀(B)의 전압 정보를 입수할 수 있고, 도면에 도시되어 있지는 않지만, 상기 배선 기판(C)은, 배터리 셀(B)의 상면에 배치된 서미스터(미도시)와 연결되어 배터리 셀(B)의 온도 정보를 입수할 수도 있다. The substrate support FSC may be formed at a central position between the bus bar supports FSB formed on the left and right edges. The wiring board C may be seated on the substrate support FSC. The wiring board C may include a plurality of conductive patterns (not shown) for collecting state information of the battery cell B and transferring the collected state information to a battery management unit (not shown). The wiring board C is connected to a bus bar 15 for electrically coupling neighboring battery cells B to obtain voltage information of the battery cells B. Although not shown in the drawing The wiring board C may be connected to a thermistor (not shown) disposed on the upper surface of the battery cell B to obtain temperature information of the battery cell B.
상기 배선 기판(C)은, 다수의 배터리 셀(B)로부터 입수된 상태 정보, 예를 들어, 전압 및 온도에 관한 상태 정보를 취합하여 별도의 배터리 관리부(미도시)로 전달함으로써, 배터리 관리부(미도시)로 하여금 배터리 셀(B)의 충, 방전 동작을 제어하도록 하거나, 또는 배선 기판(C)과 함께 마련된 배터리 관리부를 통하여 입수된 상태 정보에 근거하여 배터리 셀(B)의 충, 방전 동작을 제어할 수 있다. The wiring board C collects status information about the status information, for example, voltage and temperature, obtained from the plurality of battery cells B and transfers the collected status information to a separate battery management unit (not shown) Discharge operation of the battery cell B based on the state information obtained through the battery management unit provided with the wiring board C or to control the charge and discharge operations of the battery cell B Can be controlled.
도 3을 참조하면, 상기 배선 기판(C)에는, 배터리 셀(B)의 상태 정보에 관한 신호 전달을 매개하기 위한 가요성의 센싱부(S)가 연결될 수 있다. 상기 센싱부(S)는 플렉서블하게 변형될 수 있도록 필름 형태로 마련될 수 있다. 상기 센싱부(S)는, 배터리 셀(B) 측(예를 들어, 배터리 셀 B과 전기적으로 연결된 버스 바 15)에 연결되는 입력 포트(SI)와 배선 기판(C) 측에 연결되는 출력 포트(SO)를 포함할 수 있고, 상기 입력 포트(SI)와 출력 포트(SO)를 연결하는 연결부(SC)를 포함할 수 있다. 3, a flexible sensing unit S may be connected to the wiring board C for mediating signal transmission related to the state information of the battery cell B. FIG. The sensing unit S may be provided in a film form so as to be flexibly deformable. The sensing unit S includes an input port SI connected to the battery cell B side (for example, a bus bar 15 electrically connected to the battery cell B) and an output port SI connected to the wiring board C side. (SO), and may include a connection part (SC) connecting the input port (SI) and the output port (SO).
상기 입력 포트(SI)는, 배터리 셀(B) 측(예를 들어, 배터리 셀 B과 전기적으로 연결된 버스 바 15)으로부터 배터리 셀(B)의 상태 정보가 입력되는 개소에 해당될 수 있고, 상기 출력 포트(SO)는, 배터리 셀(B)의 상태 정보가 배선 기판(C)을 향하여 출력되는 개소에 해당될 수 있다. 상기 연결부(SC)는 상기 입력 포트(SI)와 상기 출력 포트(SO)를 연결해주는 것으로, 만곡부를 포함하여 서로에 대해 겹쳐지게 배치되는 굴곡진 형태로 형성될 수 있다. The input port SI may correspond to a position where state information of the battery cell B is input from the battery cell B side (for example, the bus bar 15 electrically connected to the battery cell B) The output port SO may correspond to a position where the state information of the battery cell B is output toward the wiring board C. [ The connecting portion SC connects the input port SI and the output port SO and may be formed in a curved shape including a curved portion and disposed to overlap with each other.
상기 센싱부(S)의 입력 포트(SI)는, 배터리 셀(B) 측에 연결될 수 있다. 보다 구체적으로, 상기 센싱부(S)의 입력 포트(SI)는, 서로 이웃한 배터리 셀(B)을 전기적으로 연결해주는 버스 바(15) 상에 연결될 수 있고, 상기 입력 포트(SI)를 통하여 버스 바(15)로부터 배터리 셀(B)의 전압 신호가 입력될 수 있다. 도면에 도시되어 있지는 않지만, 본 발명의 다른 실시형태에서, 상기 입력 포트(SI)는 배터리 셀(B)의 상면에 배치된 서미스터(미도시) 상에 연결될 수 있고, 상기 입력 포트(SI)를 통하여 서미스터(미도시)로부터 배터리 셀(B)의 온도 신호가 입력될 수 있다. 이런 의미에서 상기 센싱부(S)의 입력 포트(SI)는, 배터리 셀(B)의 상태 정보를 취득하기 위한 신호 입력부에 연결된다고 할 수 있다. 상기 신호 입력부란, 배터리 셀(B)의 전압이나 온도와 같은 상태 정보를 취득하기 위해 배터리 셀(B)과 연결되어 있는 것으로, 예를 들어, 배터리 셀(B)과 전기적으로 연결되어 있는 버스 바(15) 또는 배터리 셀(B)과 열적으로 연결되어 있는 서미스터(미도시)를 의미할 수 있다. The input port SI of the sensing unit S may be connected to the battery cell B side. More specifically, the input port SI of the sensing unit S may be connected to a bus bar 15 that electrically connects neighboring battery cells B, The voltage signal of the battery cell B from the bus bar 15 can be input. Although not shown in the drawings, in another embodiment of the present invention, the input port SI may be connected on a thermistor (not shown) disposed on the upper surface of the battery cell B, The temperature signal of the battery cell B can be input from the thermistor (not shown). In this sense, the input port SI of the sensing unit S may be connected to a signal input unit for acquiring status information of the battery cell B. The signal input unit is connected to the battery cell B in order to acquire status information such as the voltage and the temperature of the battery cell B. For example, the signal input unit may include a bus bar electrically connected to the battery cell B, (Not shown) thermally connected to the battery cell 15 or the battery cell B.
상기 센싱부(S)의 연결부(SC)는 상기 입력 포트(SI)와 상기 출력 포트(SO)를 연결해주는 것으로, 만곡부를 포함하여 서로에 대해 겹쳐지게 배치되는 굴곡진 형태로 형성될 수 있다. 상기 배터리 팩은, 배터리 셀(B)이 배열되는 일 방향(Z1 방향)을 따라 배터리 셀(B)을 개재하여 서로 마주하게 결합되는 프레임(F)을 포함할 수 있다. 상기 배터리 셀(B)은, 충, 방전 동작에 따라 일 방향(Z1 방향)을 따라 팽창하는 스웰링을 경험할 수 있고, 배터리 셀(B)을 개재하여 일 방향(Z1 방향)을 따라 전후로 결합된 프레임(F)이 일 방향(Z1 방향)으로 슬라이딩되면서 배터리 셀(B)의 스웰링에 따른 변형을 수용할 수 있다. The connection portion SC of the sensing portion S connects the input port SI and the output port SO and may be formed in a curved shape including a curved portion and disposed to overlap with each other. The battery pack may include a frame F which is coupled to the battery cell B in the one direction (Z1 direction) in which the battery cells B are arranged to face each other via the battery cells B. The battery cell B can experience swelling that swells along one direction (Z1 direction) in accordance with charging and discharging operations and can be swung along the Z1 direction in one direction (Z1 direction) via the battery cell (B) The frame F is slid in one direction (Z1 direction) to accommodate deformation due to swelling of the battery cell B. [
이와 같이, 배터리 셀(B)의 스웰링에 따라, 배터리 셀(B)이 일 방향(Z1 방향)으로 팽창하면, 프레임(F)의 위치가 일 방향(Z1 방향)을 따라 이동하게 되며, 프레임(F) 상의 버스 바(15)에 결합된 입력 포트(SI)와 배선 기판(C)에 결합된 출력 포트(SO) 간의 상대적인 위치가 일 방향(Z1 방향)을 따라 신장하게 된다. 이에 따라 입력 포트(SI)와 출력 포트(SO)를 연결해주는 연결부(SC)가 일 방향(Z1 방향)을 따르는 변형을 수용하도록 변형이 강제된다. 이때, 상기 연결부(SC)는 만곡부를 포함하여 서로에 대해 겹쳐지게 배치되는 굴곡진 형태로 형성됨으로써, 스웰링에 따른 입력 포트(SI)와 출력 포트(SO) 간의 상대적인 위치 신장에 추종하여 용이하게 변형될 수 있으며, 연결부(SC) 내부에 축적되는 응력 집중을 경감시킬 수 있다. Thus, when the battery cell B expands in one direction (Z1 direction) in accordance with the swelling of the battery cell B, the position of the frame F moves in one direction (Z1 direction) The relative position between the input port SI coupled to the bus bar 15 on the wiring board F and the output port SO coupled to the wiring board C is elongated in one direction (Z1 direction). Thus, the deformation is forced so that the connection portion SC connecting the input port SI and the output port SO receives deformation along one direction (Z1 direction). At this time, the connection portions SC are formed in a curved shape that includes the curved portions and are disposed so as to overlap with each other, so that the connection portions SC follow the relative position extension between the input port SI and the output port SO according to the swelling, And the concentration of stress accumulated in the connection portion SC can be reduced.
상기 센싱부(S)의 출력 포트(SO)는, 배선 기판(C)의 패드(미도시) 상에 연결될 수 있으며, 센싱부(S)의 출력 포트(SO)를 통하여 전달되는 전기 신호는, 배선 기판(C)의 패드(미도시)를 통하여, 배선 기판(C) 상의 도전 패턴(미도시)으로 전달될 수 있다. 상기 센싱부(S)의 출력 포트(SO)는, 배선 기판(C)의 패드(미도시) 상에서 용접이나 솔더링 결합될 수 있으며, 도전성 접착제 등을 이용하여 결합될 수도 있다.The output port SO of the sensing unit S may be connected to a pad (not shown) of the wiring board C. An electrical signal transmitted through the output port SO of the sensing unit S may be, (Not shown) on the wiring board C through a pad (not shown) of the wiring board C. The output port SO of the sensing unit S may be welded or soldered on a pad (not shown) of the wiring board C or may be coupled using a conductive adhesive or the like.
도 1에서 미설명된 도면번호 E 및 210은, 각각 엔드 블록(E)과 엔드 플레이트(210)를 나타내는 것으로, 상기 엔드 블록(E) 및 엔드 플레이트(210)는 최외곽에 배치된 배터리 셀(B)의 외곽에 배치되어 배터리 팩을 구성하는 다수의 배터리 셀(B)을 물리적으로 구속하기 위한 체결력을 제공할 수 있다.1 and 2 denote an end block E and an end plate 210. The end block E and the end plate 210 are connected to a battery cell B to provide a fastening force for physically restricting the plurality of battery cells B constituting the battery pack.
도 4에는 도 3의 일부에 대한 분해 사시도가 도시되어 있다. 도 5에는 센싱부의 결합 구조를 설명하기 위한 분해 사시도가 도시되어 있다. 도 6 및 도 7에는, 도 5의 VI-VI 선을 따라 취한 단면도들로서, 센싱부의 결합 구조를 설명하기 위한 서로 다른 단면도들이 도시되어 있다.Fig. 4 is an exploded perspective view of a part of Fig. 5 is an exploded perspective view for explaining the coupling structure of the sensing unit. 6 and 7 are cross-sectional views taken along the line VI-VI of FIG. 5, wherein different cross-sectional views for illustrating the coupling structure of the sensing portion are shown.
도면들을 함께 참조하면, 센싱부(S)의 입력 포트(SI)와 신호 입력부(예를 들어, 배터리 셀 B과 전기적으로 연결되어 있는 버스 바 15)는, 서로에 대해 결합되는 결합부(CP)를 형성할 수 있다. 상기 입력 포트(SI)와 버스 바(15) 간의 결합부(CP)는 도전성 결합에 해당되는 용접부(WD)를 포함함으로써, 버스 바(15)의 전압 신호가 입력 포트(SI)를 통하여 센싱부(S)로 전달될 수 있다. 그리고, 상기 입력 포트(SI)의 용접부(WD) 주변으로는, 제1, 제2 접착부(A1,A2)가 형성될 수 있다. 보다 구체적으로, 상기 버스 바(15) 상에 입력 포트(SI)를 서로 겹쳐지게 배치한 상태에서, 다수의 돌출 팁이 형성된 초음파 혼(UH)을 입력 포트(SI) 상에 압착시키고, 입력 포트(SI)에 대해 초음파 진동을 가함으로써, 입력 포트(SI)와 버스 바(15)를 서로 용융 접합시키는 방식으로 초음파 용접이 수행될 수 있다. 상기 용접부(WD) 주변으로는, 제1, 제2 접착부(A1,A2)가 순차적으로 둘러싸도록 형성될 수 있다. 예를 들어, 상기 제1 접착부(A1)는 액상의 접착제로 형성될 수 있으며, 상기 제2 접착부(A2)는 고상의 접착제로 형성될 수 있다. 이들 제1, 제2 접착부(A1,A2)는, 용접부(WD)의 주변을 이중으로 둘러싸서, 용접부(WD)를 보호하는 기능을 할 수 있다. 예를 들어, 상기 제1, 제2 접착부(A1,A2)는, 용접부(WD)의 주변을 이중으로 둘러싸서 수분이나 산소와 같은 외부 유해환경으로부터 용접부(WD)를 절연시킴으로써, 용접부(WD)의 산화와 같은 용접부(WD)의 변질을 차단하고, 용접부(WD)의 전기 저항이 증가되는 것을 방지할 수 있다.The input port SI of the sensing unit S and the signal input unit (for example, the bus bar 15 electrically connected to the battery cell B) are connected to each other by a coupling unit CP coupled to each other, Can be formed. The coupling portion CP between the input port SI and the bus bar 15 includes the welded portion WD corresponding to the conductive coupling so that the voltage signal of the bus bar 15 passes through the input port SI, (S). The first and second adhesive portions A1 and A2 may be formed around the welded portion WD of the input port SI. More specifically, in a state where the input ports SI are disposed on the bus bar 15 in a superposed manner, the ultrasonic horn UH having a plurality of protruding tips formed thereon is pressed onto the input port SI, The ultrasonic welding can be performed in such a manner that the input port SI and the bus bar 15 are fusion-bonded to each other by applying ultrasonic vibration to the SI. The first and second adhesive portions A1 and A2 may be sequentially formed around the welded portion WD. For example, the first adhesive portion A1 may be formed of a liquid adhesive, and the second adhesive portion A2 may be formed of a solid adhesive. The first and second bonding portions A1 and A2 can function to protect the welded portion WD by enclosing the periphery of the welding portion WD in a double manner. For example, the first and second adhesive portions A1 and A2 may surround the welded portion WD in a double manner to insulate the welded portion WD from an external harmful environment such as moisture or oxygen, It is possible to prevent the deterioration of the welded portion WD such as oxidation of the welded portion WD and to prevent the increase in the electrical resistance of the welded portion WD.
다시 말하면, 상기 입력 포트(SI)와 버스 바(15) 간의 결합부(CP)는, 용접부(WD)와, 상기 용접부(WD)의 외면 상에 도포된 제1 접착부(A1)와, 상기 제1 접착부(A1)의 외곽을 둘러싸는 제2 접착부(A2)를 포함할 수 있다. 여기서, 상기 용접부(WD)는, 입력 포트(SI)와 버스 바(15) 간의 전기적인 연결을 매개할 수 있는 도전성 결합에 해당되며, 상기 제1, 제2 접착부(A1,A2)는 용접부(WD)를 이중으로 둘러싸서 용접부(WD)를 보호하기 위한 것으로, 도전성 결합을 형성하지 않는 절연성 결합에 해당될 수 있다.In other words, the coupling part CP between the input port SI and the bus bar 15 includes a welding part WD, a first bonding part A1 applied on the outer surface of the welding part WD, And a second bonding portion A2 surrounding the outer periphery of the first bonding portion A1. The welding portion WD corresponds to a conductive coupling capable of mediating an electrical connection between the input port SI and the bus bar 15. The first and second bonding portions A1 and A2 are welded WD) to protect the welded portion WD, and may correspond to an insulating coupling that does not form a conductive bond.
상기 제1 접착부(A1)는 액상으로 형성되어, 용접부(WD)의 외면에 도포되도록 용접부(WD) 상으로 주입될 수 있다. 보다 구체적으로, 상기 입력 포트(SI)에는 제1 접착부(A1)의 형성을 위하여, 액상 접착제의 주입을 허용하기 위한 주입 홀(IH)이 형성될 수 있다. 예를 들어, 상기 주입 홀(IH)을 통하여 주입된 액상의 접착제는, 용접부(WD)의 외면을 따라 균일하게 도포될 수 있도록 상기 주입 홀(IH)은 상기 입력 포트(SI)의 다수 개소에 형성될 수 있으며, 서로 대칭적인 위치에 형성되어 제1 접착부(A1)가 용접부(WD)의 외면을 따라 균일한 위치에 도포되도록 할 수 있다. 보다 구체적으로, 상기 주입 홀(IH)은 입력 포트(SI)의 가장자리를 따라 슬릿 형태로 형성될 수 있으며, 입력 포트(SI)의 서로 마주하는 한 쌍의 변부를 따라 나란하게 연장될 수 있다.The first bonding portion A1 is formed in a liquid phase and can be injected onto the welded portion WD so as to be applied to the outer surface of the welded portion WD. More specifically, in the input port SI, an injection hole IH for allowing the injection of the liquid adhesive can be formed for forming the first adhesive portion A1. For example, the injection hole IH may be formed at a plurality of positions of the input port SI so that the liquid adhesive injected through the injection hole IH can be uniformly applied along the outer surface of the welded portion WD. And may be formed symmetrically with respect to each other so that the first bonding portion A1 is applied at a uniform position along the outer surface of the welded portion WD. More specifically, the injection holes IH may be formed in the form of slits along the edge of the input port SI and may extend in parallel along a pair of opposing sides of the input port SI.
상기 제1 접착부(A1)의 형성에 대해, 상기 입력 포트(SI)와 버스 바(15) 간에 용접이 완료된 후에, 상기 입력 포트(SI)의 주입 홀(IH)을 통하여 액상의 접착제를 주입함으로써, 입력 포트(SI)와 버스 바(15) 사이에 형성된 용접부(WD)의 외면 상으로 액상의 접착제가 도포될 수 있고, 액상의 접착제가 응고되면서 고상 형태의 제1 접착부(A1)가 형성될 수 있다. 이와 같이, 상기 제1 접착부(A1)의 형성은, 입력 포트(SI)의 용접이 완료된 이후에 이루어질 수 있다. 상기 제1 접착부(A1)는 액상의 접착제를 주입하는 방식으로 형성됨으로써, 용접부(WD)의 외면 상에 균일하게 도포될 수 있으며, 제2 접착부(A2)에 의해 정의된 충진 영역(FF) 내부를 채우도록 주입되어 용접부(WD)를 덮어줄 수 있다. 상기 제1 접착부(A1)는 용접부(WD)의 외면 상에 도포되어 용접부(WD)를 보호하기 위한 것으로, 도전성이 없는 절연성 접착제로 형성될 수 있다. 상기 제1 접착부(A1)로서, 절연성 접착제가 아닌 도전성 접착제를 사용할 수도 있으나, 도전성 접착제를 사용할 경우에는, 주위 다른 구성과의 전기적인 단락을 피하기 위해 접착제의 주입 공정에서 보다 엄격한 공정 관리가 요구될 수 있다. After the welding between the input port SI and the bus bar 15 is completed, the liquid adhesive is injected through the injection hole IH of the input port SI in the formation of the first adhesive portion A1 A liquid adhesive can be applied on the outer surface of the weld WD formed between the input port SI and the bus bar 15 and the solid adhesive A1 is formed as the liquid adhesive coagulates . Thus, the formation of the first bonding portion A1 can be performed after the welding of the input port SI is completed. The first adhesive portion A1 is formed by injecting a liquid adhesive so that it can be uniformly applied on the outer surface of the weld portion WD and can be uniformly applied to the inside of the filling region FF defined by the second adhesive portion A2, So as to cover the welded portion WD. The first bonding portion A1 is formed on the outer surface of the welding portion WD to protect the welding portion WD and may be formed of an insulating adhesive having no conductivity. As the first bonding portion A1, a conductive adhesive other than an insulating adhesive may be used. However, in the case of using a conductive adhesive, more stringent process control is required in the step of injecting the adhesive in order to avoid an electrical short circuit with other surrounding structures .
상기 제2 접착부(A2)는 용접 이전에도, 입력 포트(SI)와 버스 바(15) 간의 가접합 상태를 형성할 수 있고, 특히 고상으로 형성되어, 초음파 용접과 같은 용접 중에도 형상을 유지하고 입력 포트(SI)와 버스 바(15) 간의 가접합 상태를 유지해줄 수 있다. 예를 들어, 상기 입력 포트(SI)는, 버스 바(15) 상에 겹쳐지도록 배치될 수 있는데, 이때, 상기 입력 포트(SI)는 제2 접착부(A2)를 개재하여 버스 바(15)와 마주하게 결합될 수 있으며, 제2 접착부(A2)를 통하여 입력 포트(SI)와 버스 바(15)는 서로 가접합될 수 있다. 이렇게 입력 포트(SI)와 버스 바(15) 간에 가접합이 이루어진 상태에서 용접이 진행됨으로써, 입력 포트(SI)와 버스 바(15) 간의 용접 위치가 어긋나지 않고, 초음파 진동이 가해지는 초음파 용접 중에도 입력 포트(SI)와 버스 바(15) 간의 위치 정렬이 흐트러지지 않고 용접 위치가 어긋나지 않게 된다. 상기 제2 접착부(A2)는 고상으로 형성됨으로써, 초음파 진동과 같은 반복적인 외력에도 불구하고 그 형상을 유지할 수 있고, 입력 포트(SI)와 버스 바(15) 간의 가접합 상태를 견고하게 유지해줄 수 있다. 상기 제2 접착부(A2)는 초음파 진동에도 그 형상을 유지할 수 있도록 고상의 접착제로 이루어질 수 있으며, 예를 들어, 양면 테이프로 마련될 수 있다. The second adhering portion A2 can form an adhered state between the input port SI and the bus bar 15 even before welding and is particularly formed in a solid state so as to maintain the shape even during welding such as ultrasonic welding, The connection state between the port SI and the bus bar 15 can be maintained. For example, the input port SI may be disposed on the bus bar 15 such that the input port SI is connected to the bus bar 15 via the second bonding portion A2, And the input port SI and the bus bar 15 can be joined to each other via the second adhesive portion A2. In this way, welding is performed in a state where the input port SI and the bus bar 15 are joined, so that the welding position between the input port SI and the bus bar 15 does not deviate, and during the ultrasonic welding in which the ultrasonic vibration is applied The positional alignment between the input port SI and the bus bar 15 is not disturbed and the welding position is not shifted. Since the second bonding portion A2 is formed in a solid state, the shape of the second bonding portion A2 can be maintained in spite of repetitive external forces such as ultrasonic vibration, and the bonding state between the input port SI and the bus bar 15 is firmly maintained . The second adhesive portion A2 may be made of a solid adhesive so as to maintain its shape even by ultrasonic vibration, and may be provided as a double-sided tape, for example.
상기 제2 접착부(A2)는, 입력 포트(SI)와 버스 바(15) 사이의 테두리를 따라 부착될 수 있다. 보다 구체적으로, 상기 제2 접착부(A2)는, 입력 포트(SI)와 버스 바(15) 사이에 형성될 용접부(WD) 주변을 둘러싸도록 입력 포트(SI)의 테두리를 따라 부착될 수 있다. 즉, 상기 제2 접착부(A2)와 용접부(WD)는, 충진 영역(FF)을 개재하여 서로로부터 이격될 수 있고, 상기 제2 접착부(A2)와 용접부(WD) 사이의 충진 영역(FF) 내에는 제1 접착부(A1)가 형성될 수 있다. 즉, 입력 포트(SI)의 테두리를 따라, 제2 접착부(A2)를 형성함으로써, 입력 포트(SI)의 중앙 위치를 중심으로 형성되는 용접부(WD)와 제2 접착부(A2) 사이에서 충진 영역(FF)을 정의하고, 이렇게 정의된 충진 영역(FF) 내로 액상의 접착제를 주입하여 제1 접착부(A1)를 형성할 수 있다. 상기 제2 접착부(A2)는, 액상의 접착제로 형성되는 제1 접착부(A1)가 채워지는 충진 영역(FF)을 정의하며, 액상의 접착제는, 제2 접착부(A2)를 스톱퍼로 하여, 입력 포트(SI)를 벗어난 위치로 유출되지 않을 수 있다. 예를 들어, 상기 제1 접착부(A1)는, 제1 접착부(A1)의 외곽을 둘러싸는 제2 접착부(A2)의 안내에 따라, 제2 접착부(A2)와 용접부(WD) 사이의 충진 영역(FF) 내부를 채울 수 있고, 제2 접착부(A2)에 의해 충진 영역(FF) 외부로 흘러나가지 않도록 유동이 제한됨으로써, 충진 영역(FF) 내에서 충분한 높이를 형성할 수 있고, 용접부(WD)를 충분히 덮을 수 있다. The second adhesive portion A2 may be attached along the rim between the input port SI and the bus bar 15. [ More specifically, the second adhesive portion A2 may be attached along the rim of the input port SI so as to surround the periphery of the welded portion WD to be formed between the input port SI and the bus bar 15. [ That is, the second bonding portion A2 and the welding portion WD can be spaced apart from each other via the filling region FF and the filling region FF between the second bonding portion A2 and the welding portion WD, The first bonding portion A1 may be formed. That is, by forming the second adhering portion A2 along the rim of the input port SI, it is possible to form the filling region between the welding portion WD formed around the center position of the input port SI and the second adhering portion A2, (FF) is defined, and a liquid adhesive is injected into the filling region FF defined as described above to form the first bonding portion A1. The second adhesive portion A2 defines a filling region FF filled with a first adhesive portion A1 formed of a liquid adhesive and the liquid adhesive uses a second adhesive portion A2 as a stopper, It may not leak to a position outside the port SI. For example, the first bonding portion A1 may be formed in the filling region between the second bonding portion A2 and the weld portion WD in accordance with the guidance of the second bonding portion A2 surrounding the outer periphery of the first bonding portion A1. A sufficient height can be formed in the filling region FF by limiting the flow so that the second bonding portion A2 does not flow out of the filling region FF and the welding portion WD Can be sufficiently covered.
상기 제2 접착부(A2)는, 입력 포트(SI)와 버스 바(15) 사이의 주변을 따라 연속적으로 형성될 수 있다. 즉, 상기 제2 접착부(A2)가 입력 포트(SI)와 버스 바(15) 사이에 형성된 용접부(WD)의 외곽을 연속적으로 둘러쌈으로써, 용접부(WD)와 제2 접착부(A2) 사이에는 밀실한 충진 영역(FF)이 형성될 수 있고, 충진 영역(FF) 내에 채워지는 제1 접착부(A1)의 액상 접착제가 제2 접착부(A2)에 의해 갇히게 되어, 외부로 유출되지 않을 수 있다. 이런 점에서, 상기 제2 접착부(A2)는 입력 포트(SI)의 테두리를 따라 연속적으로 형성될 수 있고, 상기 제2 접착부(A2)가 제1 접착부(A1)의 외곽을 따라 연속적으로 형성됨으로써, 제1 접착부(A1)의 액상 접착제가 유출되는 것을 방지할 수 있고, 제1 접착부(A1)의 형성 범위를 명확하게 제한할 수 있다.The second adhering portion A2 may be continuously formed along the periphery between the input port SI and the bus bar 15. [ That is, the second adhering portion A2 continuously surrounds the outer edge of the welded portion WD formed between the input port SI and the bus bar 15, thereby forming a gap between the welded portion WD and the second adhering portion A2 A solid filled region FF may be formed and the liquid adhesive of the first adhesive portion A1 filled in the filling region FF may be trapped by the second adhesive portion A2 and may not leak to the outside. In this regard, the second adhesive portion A2 can be continuously formed along the rim of the input port SI, and the second adhesive portion A2 is continuously formed along the outer edge of the first adhesive portion A1 , The liquid adhesive of the first bonding portion A1 can be prevented from flowing out, and the formation range of the first bonding portion A1 can be clearly restricted.
상기 제2 접착부(A2)는 입력 포트(SI)와 버스 바(15) 사이에 개재되고, 입력 포트(SI)에 가압 접촉된 초음파 혼(UH)의 진동에도 불구하고 입력 포트(SI)와 버스 바(15) 간의 가접합 상태를 유지할 수 있도록 고상의 접착제 이면서 완충 특성을 갖는 것이 바람직하다. 이를 위해, 상기 제2 접착부(A2)는 양면 테이프로 마련될 수 있다. 상기 입력 포트(SI)와 버스 바(15)는, 용접부(WD)를 통하여 도전성 결합을 형성하고 있으므로, 상기 용접부(WD)를 둘러싸서 보호하는 제2 접착부(A2)는 입력 포트(SI)와 버스 바(15) 사이에서 절연성 결합을 형성할 수 있다. 초음파 진동이 가해지는 제2 접착부(A2)를 도전성 결합으로 형성하면, 주변 다른 구성과의 전기적인 단락을 방지하기 위한 보다 엄격한 공정 관리가 요구될 수 있다.The second adhesive portion A2 is sandwiched between the input port SI and the bus bar 15 and is connected to the input port SI and the bus bar 15 in spite of the vibration of the ultrasonic horn UH, It is preferable that the adhesive agent has a cushioning property while being a solid adhesive so as to maintain the bonding state between the bars 15. To this end, the second adhesive portion A2 may be provided as a double-sided tape. Since the input port SI and the bus bar 15 form a conductive connection through the welded portion WD, the second bonded portion A2 surrounding and protecting the welded portion WD is connected to the input port SI It is possible to form an insulating bond between the bus bars 15. If the second bonding portion A2 to which ultrasonic vibration is applied is formed of a conductive bond, more stringent process control may be required to prevent electrical short-circuiting with other peripheral structures.
상기 입력 포트(SI)와 버스 바(15) 간의 결합은, 이하와 같은 순서로 진행될 수 있다. 먼저, 버스 바(15) 상에 입력 포트(SI)를 겹쳐지게 배치하는데, 이때, 입력 포트(SI)와 버스 바(15) 사이에 제2 접착부(A2)를 개재하여, 입력 포트(SI)와 버스 바(15) 간에 가접합을 형성한다. 그리고, 가접합된 버스 바(15)와 입력 포트(SI) 상에 초음파 진동을 가하여 초음파 용접을 수행한다. 이때, 입력 포트(SI)의 상면에 대해, 초음파 혼(UH)을 가압 접촉시켜 초음파 진동을 제공함으로써, 입력 포트(SI)와 버스 바(15) 사이에 초음파 용접부(WD)를 형성할 수 있으며, 입력 포트(SI)의 상면에는 초음파 혼(UH)의 압입 자국이 형성될 수 있다. 여기서, 입력 포트(SI)의 상면이란, 입력 포트(SI) 중에서 용접부(WD)와 반대되는 면을 의미할 수 있으며, 상기 입력 포트(SI)의 상면에는 초음파 용접에 의한 압입 자국이 형성될 수 있다. 그 다음에, 입력 포트(SI)의 주입 홀(IH)을 통하여 액상의 접착제를 주입하여 용접부(WD)의 외면 상으로 도포된 제1 접착부(A1)를 형성할 수 있다. The coupling between the input port SI and the bus bar 15 may be performed in the following order. The input port SI is arranged on the bus bar 15 in such a manner that the input port SI is overlapped with the input port SI via the second bonding portion A2 between the input port SI and the bus bar 15. [ And the bus bar 15 are connected to each other. Ultrasonic vibration is applied to the bus bar 15 and the input port SI to perform ultrasonic welding. At this time, an ultrasonic welding portion WD can be formed between the input port SI and the bus bar 15 by providing the ultrasonic vibration by pressing the ultrasonic horn UH against the upper surface of the input port SI , And an imprinting station of the ultrasonic horn UH may be formed on the upper surface of the input port SI. Here, the upper surface of the input port SI may be a surface opposite to the welded portion WD of the input port SI, and an indentation mark by ultrasonic welding may be formed on the upper surface of the input port SI. have. Thereafter, the liquid adhesive is injected through the injection hole IH of the input port SI to form the first adhesive portion A1 coated on the outer surface of the welded portion WD.
상기 제1 접착부(A1)의 형성을 위해 액상의 접착제를 주입할 때, 액상의 접착제는, 입력 포트(SI)의 상면 위에 도포될 수 있고, 입력 포트(SI) 상에 도포된 액상의 접착제는, 입력 포트(SI)의 주입 홀(IH)을 통하여 입력 포트(SI)와 버스 바(15) 사이로 스며들고, 제2 접착부(A2)와 용접부(WD) 사이의 충진 영역(FF) 내로 침투하여 용접부(WD)를 덮어줄 수 있다. 입력 포트(SI)에 형성된 주입 홀(IH)을 통하여, 액상의 접착제(제1 접착부 A1)를 단순히 입력 포트(SI)의 상면에 도포하는 방식으로, 액상의 접착제(제1 접착부 A1)는 충진 영역(FF) 내로 침투하여 용접부(WD)를 덮어줄 수 있으며, 입력 포트(SI)의 테두리를 따라 부착된 제2 접착부(A2)에 의해 액상의 접착제(제1 접착부 A1)는, 입력 포트(SI)를 벗어난 외부 위치로 유출되지 않고 용접부(WD)를 충분히 덮어줄 수 있는 높이까지 형성될 수 있다. 즉, 상기 제2 접착부(A2)는, 제1 접착부(A1)의 형성 위치를 정의해주며, 제1 접착부(A1)를 이루는 액상의 접착제가 입력 포트(SI)를 벗어난 외부 위치로 유출되지 않도록 충진 영역(FF) 내부에 가두어두는 댐의 역할을 할 수 있다. When the liquid adhesive is injected for forming the first adhesive portion A1, the liquid adhesive can be applied on the upper surface of the input port SI, and the liquid adhesive applied on the input port SI Permeates between the input port SI and the bus bar 15 through the injection hole IH of the input port SI and penetrates into the filling region FF between the second adhering portion A2 and the welded portion WD It is possible to cover the welded portion WD. The liquid adhesive (first adhesive portion A1) is filled in the filling port (SI) in such a manner that the liquid adhesive (first adhesive portion A1) is simply applied to the upper surface of the input port SI through the injection hole IH formed in the input port SI The adhesive agent (first adhesive portion A1) in the liquid state can be adhered to the input port (SI) by the second adhesive portion A2 attached along the rim of the input port SI, SI to a height sufficient to cover the weld WD without flowing out to an external position outside the welded portion WD. That is, the second adhesive portion A2 defines the position where the first adhesive portion A1 is formed, and prevents the liquid adhesive forming the first adhesive portion A1 from flowing out to an external position out of the input port SI It can serve as a dam that is confined inside the filling area (FF).
예를 들어, 상기 제1 접착부(A1) 중, 용접부(WD)와 제2 접착부(A2) 사이의 충진 영역(FF)을 채우고 남은 잔여의 제1 접착부(A1)는, 입력 포트(SI)의 상면에 잔존할 수 있다. 이런 의미에서, 상기 제1 접착부(A1)는, 입력 포트(SI)와 신호 입력부(예를 들어, 배터리 셀 B과 전기적으로 연결되어 있는 버스 바 15) 사이의 충진 영역(FF)은 물론이고, 입력 포트(SI)의 상면에도 형성될 수 있다. 여기서, 입력 포트(SI)의 상면이란, 입력 포트(SI) 중에서 용접부(WD)와 반대되는 면을 의미할 수 있고, 상기 입력 포트(SI)의 상면에는 제1 접착부(A1)가 형성될 수 있다. For example, the remaining first bonding portion A1 remaining after filling the filling region FF between the welded portion WD and the second bonding portion A2 among the first bonding portions A1, It may remain on the upper surface. In this sense, the first bonding portion A1 includes not only the filling region FF between the input port SI and the signal input portion (for example, the bus bar 15 electrically connected to the battery cell B) And may also be formed on the upper surface of the input port SI. The upper surface of the input port SI may be a surface opposite to the welded portion WD of the input port SI and the first adhesive portion A1 may be formed on the upper surface of the input port SI. have.
도 4를 참조하면, 상기 센싱부(S)의 입력 포트(SI)는, 결합 지지대(CB) 상에 배치된 버스 바(15) 부분과 결합될 수 있으며, 결합 지지대(CB)에 의해 상대적으로 높은 레벨로 떠받쳐진 버스 바(15) 부분과 결합될 수 있다. 상기 입력 포트(SI)와 버스 바(15) 간의 결합은, 상기 결합 지지대(CB)에 의해 물리적으로 지지될 수 있으며, 상기 입력 포트(SI)와 결합되는 버스 바(15) 부분을 상대적으로 높은 레벨로 떠받쳐 지지해줌으로써, 입력 포트(SI)와 버스 바(15) 간의 초음파 용접을 포함하여 제1, 제2 접착부(A1,A2)의 형성에서 다른 부품과의 간섭을 줄일 수 있고, 결합 공정의 편이성이 향상될 수 있다. 예를 들어, 상기 결합 지지대(CB)는, 버스 바 지지부(FSB) 상에 형성될 수 있으며, 버스 바 지지부(FSB)와 함께 일체적으로 형성될 수 있다. 4, the input port SI of the sensing unit S may be coupled to a portion of the bus bar 15 disposed on the coupling support CB and may be relatively fixed by the coupling support CB And may be coupled to a portion of the bus bar 15 held at a high level. The coupling between the input port SI and the bus bar 15 can be physically supported by the coupling support CB and the portion of the bus bar 15 associated with the input port SI can be supported by a relatively high It is possible to reduce the interference with other components in the formation of the first and second adhesive portions A1 and A2 including the ultrasonic welding between the input port SI and the bus bar 15, The ease of the process can be improved. For example, the coupling support CB may be formed on the bus bar support part FSB and integrally formed with the bus bar support part FSB.
도 8에는, 도 4에 도시된 센싱부의 분해 사시도가 도시되어 있다. Fig. 8 is an exploded perspective view of the sensing unit shown in Fig.
도면을 참조하면, 상기 센싱부(S)는, 배터리 셀(B)의 상태 정보에 관한 신호 전달을 매개하기 위한 도전 라인(S10)과, 상기 도전 라인(S10)의 절연을 위해 도전 라인(S10)을 매립하도록 형성된 절연 필름(S20)을 포함할 수 있다. 예를 들어, 상기 도전 라인(S10)은 동박 패턴으로 형성될 수 있으며, 도전 라인(S10)을 매립하도록 절연 필름(S20)이 배치되어 도전 라인(S10)을 통하여 전달되는 전기적인 신호를 외부로부터 절연시킬 수 있다. Referring to FIG. 1, the sensing unit S includes a conductive line S10 for mediating signal transmission relating to state information of the battery cell B, a conductive line S10 for insulation of the conductive line S10, (Not shown). For example, the conductive line S10 may be formed in a copper foil pattern, and an insulating film S20 may be disposed to embed the conductive line S10 so that an electric signal transmitted through the conductive line S10 is supplied from the outside It can be insulated.
앞서 설명된 바와 같이, 상기 센싱부(S)의 입력 포트(SI)에는 제1 접착부(A1)에 해당되는 액상 접착제의 주입을 허용하기 위한 주입 홀(IH)이 형성된다. 상기 주입 홀(IH)은, 상기 도전 라인(S10)에 형성될 수 있으며, 상기 주입 홀(IH)이 형성된 도전 라인(S10)을 덮도록 절연 필름(S20)이 형성됨으로써, 주입 홀(IH)이 형성된 입력 포트(SI)가 제공될 수 있다. 이에 따라, 상기 주입 홀(IH) 주변은 절연 필름(S20)에 의해 둘러싸일 수 있고, 주입 홀(IH) 주변에 잔여의 액상 접착제(제1 접착부 A1에 해당)가 주변의 다른 구성으로 흘러가지 못하도록 액상 접착제(제1 접착부 A1에 해당)의 유동을 차단할 수 있다. As described above, the input port SI of the sensing unit S is formed with an injection hole IH for allowing injection of the liquid adhesive corresponding to the first adhesive portion A1. The injection hole IH may be formed in the conductive line S10 and the insulating film S20 may be formed to cover the conductive line S10 formed with the injection hole IH, An input port SI may be provided. Thus, the periphery of the injection hole IH can be surrounded by the insulating film S20, and the remaining liquid adhesive (corresponding to the first adhesion portion A1) flows around the injection hole IH to other peripheral structures It is possible to block the flow of the liquid adhesive (corresponding to the first bonding portion A1).
본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.
본 발명은, 충전 및 방전이 가능한 에너지원으로서의 배터리 팩 및 배터리 팩을 구동 전원으로 사용하는 다양한 기기에 적용될 수 있다.INDUSTRIAL APPLICABILITY The present invention can be applied to various devices using a battery pack as an energy source capable of charging and discharging and a battery pack as a driving power source.

Claims (15)

  1. 상태 정보를 취득하기 위한 신호 입력부가 연결된 배터리 셀;A battery cell to which a signal input unit for acquiring status information is connected;
    상기 배터리 셀의 상태 정보를 취합하기 위한 배선 기판; 및A wiring board for collecting status information of the battery cell; And
    상기 신호 입력부에 결합되는 입력 포트와, 상기 배선 기판에 결합되어 상기 배터리 셀의 상태 정보가 출력되는 출력 포트와, 상기 입력 포트와 출력 포트 사이의 연결부를 포함하는 센싱부를 포함하되, An input port coupled to the signal input unit; an output port coupled to the wiring board to output status information of the battery cell; and a sensing unit including a connection unit between the input port and the output port,
    상기 신호 입력부와 입력 포트 사이의 결합부는, And the coupling portion between the signal input portion and the input port,
    용접부;Weld;
    상기 용접부의 외면 상에 도포된 제1 접착부; 및A first adhesive portion applied on an outer surface of the welded portion; And
    상기 제1 접착부의 외곽을 둘러싸는 제2 접착부를 포함하는 배터리 팩. And a second adhesive portion surrounding the outer periphery of the first adhesive portion.
  2. 제1항에 있어서,The method according to claim 1,
    상기 제1, 제2 접착부는 상기 용접부를 이중으로 둘러싸는 것을 특징으로 하는 배터리 팩.Wherein the first and second adhesive portions double-surround the welded portion.
  3. 제1항에 있어서,The method according to claim 1,
    상기 제1 접착부는 액상 접착제의 응고에 의해 형성된 것을 특징으로 하는 배터리 팩.Wherein the first adhesive portion is formed by solidification of the liquid adhesive.
  4. 제1항에 있어서,The method according to claim 1,
    상기 제2 접착부는 고상 접착제에 의해 형성되는 것을 특징으로 하는 배터리 팩. And the second adhesive portion is formed of a solid-state adhesive.
  5. 제4항에 있어서,5. The method of claim 4,
    상기 제2 접착부는 양면 테이프를 포함하는 것을 특징으로 하는 배터리 팩. Wherein the second adhesive portion comprises a double-sided tape.
  6. 제1항에 있어서,The method according to claim 1,
    상기 신호 입력부와 입력 포트는, 상기 입력 포트의 테두리를 따라 부착된 제2 접착부를 개재하여 서로 마주하게 결합되는 것을 특징으로 하는 배터리 팩. Wherein the signal input unit and the input port are coupled to each other via a second adhesive portion attached along the rim of the input port.
  7. 제1항에 있어서,The method according to claim 1,
    상기 제2 접착부는, 상기 신호 입력부와 입력 포트 사이에서 상기 용접부의 외곽을 연속적으로 둘러싸는 것을 특징으로 하는 배터리 팩.Wherein the second adhesive portion continuously surrounds the outer periphery of the welded portion between the signal input portion and the input port.
  8. 제1항에 있어서,The method according to claim 1,
    상기 제1 접착부는, 상기 용접부와 상기 제2 접착부 사이의 충진 영역 내부에 채워져 있는 것을 특징으로 하는 배터리 팩. Wherein the first bonding portion is filled in the filling region between the welding portion and the second bonding portion.
  9. 제1항에 있어서,The method according to claim 1,
    상기 입력 포트에는, 제1 접착부를 형성하는 액상 접착제의 주입을 허용하기 위한 주입 홀이 형성되어 있는 것을 특징으로 하는 배터리 팩.Wherein the input port is provided with an injection hole for allowing the injection of the liquid adhesive forming the first adhesive portion.
  10. 제9항에 있어서,10. The method of claim 9,
    상기 주입 홀은 상기 입력 포트의 서로 마주하는 변부를 따라 나란하게 형성된 슬릿으로 형성되는 것을 특징으로 하는 배터리 팩.Wherein the injection holes are formed as slits formed in parallel with the mutually opposing sides of the input port.
  11. 제1항에 있어서,The method according to claim 1,
    상기 제1 접착부는, 상기 용접부와 반대되는 입력 포트의 상면에도 형성되어 있는 것을 특징으로 하는 배터리 팩.Wherein the first bonding portion is also formed on an upper surface of an input port opposite to the welding portion.
  12. 제1항에 있어서,The method according to claim 1,
    상기 제1, 제2 접착부는 전기 절연성인 것을 특징으로 하는 배터리 팩.Wherein the first and second adhesive portions are electrically insulative.
  13. 제1항에 있어서,The method according to claim 1,
    상기 용접부는 초음파 용접부 인 것을 특징으로 하는 배터리 팩.Wherein the welding portion is an ultrasonic welding portion.
  14. 제1항에 있어서,The method according to claim 1,
    상기 용접부와 반대되는 입력 포트의 상면에는 초음파 혼의 압입 자국이 형성되어 있는 것을 특징으로 하는 배터리 팩.And an imprinting station of an ultrasonic horn is formed on an upper surface of the input port opposite to the welding portion.
  15. 제1항에 있어서,The method according to claim 1,
    상기 신호 입력부는, 서로 이웃한 배터리 셀을 전기적으로 연결하기 위한 버스 바이고, The signal input unit includes a bus for electrically connecting neighboring battery cells,
    상기 버스 바에 결합된 입력 포트에는 배터리 셀의 전압 신호가 입력되는 것을 특징으로 하는 배터리 팩.And a voltage signal of a battery cell is input to an input port coupled to the bus bar.
PCT/KR2018/011652 2017-12-11 2018-10-01 Battery pack WO2019117436A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111293374A (en) * 2020-05-06 2020-06-16 长沙德壹科技有限公司 Battery pack management method and device based on ultrasonic waves

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210070078A (en) * 2019-12-04 2021-06-14 주식회사 엘지에너지솔루션 Battery Module and Battery Pack
KR20220096955A (en) 2020-12-31 2022-07-07 삼성에스디아이 주식회사 Battery pack

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060019773A (en) * 2004-08-30 2006-03-06 삼성에스디아이 주식회사 Battery pack
KR20100117521A (en) * 2009-04-24 2010-11-03 산요덴키가부시키가이샤 Battery module, battery system and electric vehicle
KR20120022184A (en) * 2010-09-01 2012-03-12 삼성에스디아이 주식회사 Connecting structure between battery cell and connecting tab
KR20140002112A (en) * 2012-06-28 2014-01-08 에스케이이노베이션 주식회사 Battery module
KR20140079585A (en) * 2012-12-17 2014-06-27 주식회사 아이티엠반도체 Battery protection module package

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101101035B1 (en) * 2009-11-18 2011-12-29 삼성에스디아이 주식회사 Connection tab for connecting battery cells and battery module using the same
KR101289282B1 (en) * 2010-05-28 2013-07-24 주식회사 엘지화학 Battery Pack of Compact Structure
JP2013204225A (en) * 2012-03-27 2013-10-07 Yoshiaki Nagaura Method for attaching corrugated sheet-shaped galvanized plate, and machining method for the galvanized plate
US8693138B2 (en) * 2012-05-10 2014-04-08 Nidec Corporation Base unit
US9525195B2 (en) * 2013-07-30 2016-12-20 Johnson Controls Technology Corporation Remanufacturing methods for battery module
US9748548B2 (en) * 2013-07-30 2017-08-29 Johnson Controls Technology Company Pouch frame with integral circuitry for battery module
FR3030046A3 (en) * 2014-12-11 2016-06-17 Renault Sa METHOD AND DEVICE FOR INSPECTING A LINK, IN PARTICULAR A SOLDERED OR GLUE LINK BETWEEN TWO MATERIALS
CN206194912U (en) * 2016-09-28 2017-05-24 东莞市煜信恩能源科技有限公司 Large capacity lithium battery management system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060019773A (en) * 2004-08-30 2006-03-06 삼성에스디아이 주식회사 Battery pack
KR20100117521A (en) * 2009-04-24 2010-11-03 산요덴키가부시키가이샤 Battery module, battery system and electric vehicle
KR20120022184A (en) * 2010-09-01 2012-03-12 삼성에스디아이 주식회사 Connecting structure between battery cell and connecting tab
KR20140002112A (en) * 2012-06-28 2014-01-08 에스케이이노베이션 주식회사 Battery module
KR20140079585A (en) * 2012-12-17 2014-06-27 주식회사 아이티엠반도체 Battery protection module package

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111293374A (en) * 2020-05-06 2020-06-16 长沙德壹科技有限公司 Battery pack management method and device based on ultrasonic waves

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