WO2020203734A1 - 蓄電モジュールおよび蓄電モジュールの製造方法 - Google Patents

蓄電モジュールおよび蓄電モジュールの製造方法 Download PDF

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Publication number
WO2020203734A1
WO2020203734A1 PCT/JP2020/013936 JP2020013936W WO2020203734A1 WO 2020203734 A1 WO2020203734 A1 WO 2020203734A1 JP 2020013936 W JP2020013936 W JP 2020013936W WO 2020203734 A1 WO2020203734 A1 WO 2020203734A1
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WO
WIPO (PCT)
Prior art keywords
power storage
storage module
terminal
bus bar
hole
Prior art date
Application number
PCT/JP2020/013936
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English (en)
French (fr)
Japanese (ja)
Inventor
小林　亨
利崇 小林
Original Assignee
パナソニックＩｐマネジメント株式会社
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.)
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2021511976A priority Critical patent/JPWO2020203734A1/ja
Publication of WO2020203734A1 publication Critical patent/WO2020203734A1/ja

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10—Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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 power storage module and a method for manufacturing the power storage module.
  • Patent Document 1 describes a power storage unit in which a plurality of power storage elements are housed in a holder and adjacent power storage elements are electrically connected by a bus bar.
  • the bus bar is formed by press-molding aluminum, has a substantially L-shaped plate shape, and is connected to the peripheral electrode of one power storage element and the end face electrode of the other power storage element by welding.
  • the above power storage unit is mounted on a vehicle such as an electric vehicle or a hybrid vehicle and used as an auxiliary power source or the like.
  • the power storage unit is likely to be vibrated when the vehicle is running.
  • the bus bar resonates due to the vibration of the power storage unit, the bus bar has a plate shape and therefore tends to swing greatly in the thickness direction.
  • an object of the present invention is to provide a power storage module and a method for manufacturing a power storage module, which can secure high vibration resistance by making it difficult for the bus bar to be damaged.
  • the first aspect of the present invention relates to a power storage module.
  • the power storage module according to this embodiment is provided with a power storage device having a terminal portion on an end surface, a holder for holding the power storage device, a bus bar connected to the terminal portion, and the holder, and the bus bar is fixed. It is provided with a fixed portion.
  • the bus bar includes a terminal connecting portion connected to the terminal portion and a fixed portion fixed to the fixed portion.
  • the second aspect of the present invention relates to a method for manufacturing a power storage module.
  • the manufacturing method according to this embodiment includes a first mounting step of holding a power storage device having a terminal portion on an end surface in a holder, a first fixing step of fixing a bus bar to a fixing portion of the holder, and the bus bar being the terminal. It includes a first connection step of connecting to the unit.
  • the bus bar includes a terminal connecting portion connected to the terminal portion and a fixed portion fixed to the fixed portion, and the fixed portion includes a hole portion. Then, in the first fixing step, the fixed portion is inserted into the hole portion.
  • the present invention it is possible to provide a power storage module and a method for manufacturing a power storage module that can secure high vibration resistance by making the bus bar less likely to be damaged.
  • FIG. 1A is a perspective view of the power storage module according to the embodiment
  • FIG. 1B is a perspective view of the power storage module with the cover removed according to the embodiment
  • FIG. 2 is a perspective view of the power storage module in a state where the cover and the circuit board are removed according to the embodiment.
  • 3A and 3B are perspective views of the power storage device according to the embodiment.
  • 4 (a) and 4 (b) are perspective views of the first output bus bar viewed from two different directions according to the embodiment, and FIGS. 4 (c) and 4 (d) relate to the embodiment.
  • It is a perspective view of the second output bus bar seen from two different directions.
  • 5 (a) and 5 (b) are perspective views of the relay bus bar viewed from two different directions according to the embodiment
  • FIG. 6 is a perspective view of the hold case according to the embodiment.
  • 7 (a) is a plan view of the upper side surface portion of the hold case according to the embodiment, and
  • FIG. 7 (b) is a line AA'of FIG. 7 (a) according to the embodiment.
  • FIG. 8A is a plan view of a lower side surface portion of the hold case according to the embodiment, and
  • FIG. 8B is a line BB'of FIG. 8A according to the embodiment. It is sectional drawing of the cut hold case.
  • FIG. 9 (a) and 9 (b) are top and bottom views of the hold case according to the embodiment, respectively, and FIG. 9 (c) is C of FIG. 9 (a) according to the embodiment. It is sectional drawing of the upper side surface part of the hold case cut by the C'line.
  • FIG. 10A is a plan view of the circuit board according to the embodiment, and FIG. 10B is a perspective view of the cover according to the embodiment.
  • FIG. 11 is a flowchart showing an assembling procedure of the power storage module according to the embodiment.
  • FIG. 12A is a diagram for explaining a power storage device mounting process according to the embodiment
  • FIG. 12B is a diagram for explaining a bus bar fixing process according to the embodiment.
  • FIG. 12 (c) is a diagram for explaining the external output terminal fixing step according to the embodiment.
  • FIG. 13A is a diagram for explaining a substrate mounting process according to an embodiment
  • FIG. 13B is a diagram for explaining a cover mounting process according to an embodiment.
  • FIG. 14 is a cross-sectional view showing a state in which the main body portion of the relay bus bar according to the embodiment is press-fitted into the hole portion of the third fixing portion provided on the upper side surface portion.
  • FIG. 15 shows the upper side surface portion of the hold case in which the first output bus bar, the second output bus bar, and the relay bus bar according to the embodiment are fixed to the first fixed portion, the second fixed portion, and the third fixed portion.
  • FIG. 16 is a side sectional view of an upper side surface portion of the hold case showing a state in which the external output terminal is fixed to the terminal block according to the embodiment.
  • FIG. 17 (a) is a perspective view of the power storage unit according to the modified example
  • FIG. 17 (b) is a schematic view showing another configuration example of the power storage unit according to the modified example
  • FIG. 17 (c). ) Is a schematic diagram showing still another configuration example of the power storage unit according to the modified example.
  • the power storage module 1 according to the present embodiment will be described with reference to the drawings.
  • each figure is appropriately marked with front-back, left-right, and up-down directions.
  • the illustrated direction merely indicates the relative direction of the power storage module 1, and does not indicate the absolute direction.
  • names may be given according to the directions shown in the drawings.
  • the positive electrode terminal portion 110 and the negative electrode terminal portion 120 correspond to the "terminal portion” described in the claims.
  • the first output bus bar 200 and the second output bus bar 300 correspond to the "bus bar” and the “second bus bar” described in the claims.
  • the relay bus bar 400 corresponds to the "bus bar” and the "first bus bar” described in the claims.
  • the main body portions 210, 310, 410 correspond to the "fixed portion” described in the claims.
  • the wide end portions 210a, 310a, 410a correspond to the "second end portion” described in the claims
  • the narrow end portions 210b, 310b, 410b correspond to the "first end portion” described in the claims. Corresponds to.
  • the return portions 213, 313, and 413 correspond to the "protruding portions” described in the claims.
  • the first terminal connection portions 220, 320, 420 correspond to the “terminal connection portion” described in the claims.
  • the first relay units 230, 330, 430 correspond to the "relay unit” described in the claims.
  • the second terminal connection portions 240 and 340 correspond to the "other terminal connection portions” described in the claims.
  • the hold case 600 corresponds to the "holder” described in the claims.
  • the upper side surface portion 602 and the lower side surface portion 603 correspond to the "side surface portion” described in the claims.
  • the first fixing portion 620, the second fixing portion 630 and the third fixing portion 640 correspond to the "fixing portion” described in the claims.
  • the wall surfaces 623a, 623b, 633a, 633b, 643a, 643b correspond to the "wall surface” described in the claims.
  • the ultrasonic horn H corresponds to the "welded member” described in the claims.
  • the power storage device mounting step S1 corresponds to the "first mounting step” described in the claims.
  • the bus bar fixing step S2 corresponds to the "first fixing step” described in the claims.
  • the bus bar connection step S3 corresponds to the "first connection step” described in the claims.
  • the external output terminal fixing step S4 corresponds to the "second fixing step” described in the claims.
  • the external output terminal connecting step S5 corresponds to the "second connecting step” described in the claims.
  • the substrate mounting step S6 corresponds to the "second mounting step” described in the claims.
  • FIG. 1A is a perspective view of the power storage module 1
  • FIG. 1B is a perspective view of the power storage module 1 with the cover 800 removed.
  • FIG. 2 is a perspective view of the power storage module 1 with the cover 800 and the circuit board 700 removed.
  • the power storage module 1 includes four power storage devices 100, a first output bus bar 200, a second output bus bar 300, three relay bus bars 400, two external output terminals 500, a hold case 600, and a circuit board 700. , Cover 800.
  • the four power storage devices 100 are held inside the hold case 600 in a state where the side surfaces (peripheral surfaces) of the four power storage devices 100 are arranged so as to be adjacent to each other.
  • the two external output terminals 500 are provided to output the electric power of the power storage device 100 to the outside of the power storage module 1, and are fixed to the terminal block 650 provided in the hold case 600.
  • the first output bus bar 200 is fixed to the first fixed portion 620 provided in the hold case 600, and electrically connects the positive electrode terminal portion of the power storage device 100 and the external output terminal 500 on the positive electrode side.
  • the second output bus bar 300 is fixed to the second fixing portion 630 provided in the hold case 600, and electrically connects the negative electrode terminal portion of the power storage device 100 and the external output terminal 500 on the negative electrode side.
  • the three relay bus bars 400 are fixed to a third fixing portion 640 provided in the hold case 600, and electrically connect the positive electrode terminal portion and the negative electrode terminal portion of the adjacent power storage device 100.
  • the four power storage devices 100 are connected in series by the three relay bus bars 400.
  • the circuit board 700 is attached to the hold case 600 so as to cover the opening 600a formed on one surface of the hold case 600.
  • the circuit board 700 overlaps the four power storage devices 100 so that the board surface faces the side surfaces of the four power storage devices 100.
  • the circuit board 700 is electrically connected to the positive electrode terminal portion and the negative electrode terminal portion of the four power storage devices 100 by the first output bus bar 200, the second output bus bar 300, and the three relay bus bars 400.
  • the cover 800 is attached to the hold case 600 so as to cover the opening 600a from the outside of the circuit board 700.
  • 3 (a) and 3 (b) are perspective views of the power storage device 100.
  • the power storage device 100 is, for example, a lithium ion secondary battery in which the active material of the positive electrode is a lithium transition metal oxide such as lithium cobalt oxide, and the active material of the negative electrode is a carbon material.
  • the power storage device 100 is not limited to the non-aqueous electrolyte secondary battery, and may be a secondary battery other than the non-aqueous electrolyte secondary battery, or may be a primary battery.
  • the power storage device 100 may be a capacitor such as a lithium ion capacitor. Further, the power storage device 100 may use a conductive polymer as the active material of the positive electrode. Examples of the conductive polymer include polyaniline, polypyrrole or polythiophene and derivatives thereof, and a plurality of types of conductive polymers may be used.
  • the power storage device 100 has a columnar shape (cylindrical shape), has a positive electrode terminal portion 110 on one end face, and has a negative electrode terminal portion 120 on the other end face.
  • the electric power stored in the power storage device 100 is extracted through the positive electrode terminal 110 and the negative electrode 120.
  • a hole (not shown) connected to the inside of the power storage device 100 is formed in the positive electrode terminal portion 110, that is, one end surface, and this hole is closed by a disk-shaped sealing body 130 made of a rubber material.
  • the power storage device 100 may have a prismatic shape (square tubular shape) instead of a cylindrical shape.
  • FIGS. 4 (a) and 4 (b) are perspective views of the first output bus bar 200 viewed from two different directions
  • FIGS. 4 (c) and 4 (d) are second outputs viewed from two different directions. It is a perspective view of a bus bar 300.
  • 5 (a) and 5 (b) are perspective views of the relay bus bar 400 as viewed from two different directions.
  • the first output bus bar 200, the second output bus bar 300, and the three relay bus bars 400 are each formed by cutting out a conductive metal plate, for example, a copper plate into a predetermined shape and performing processing such as bending, and form a predetermined solid. It has a plate-like shape.
  • the first output bus bar 200 includes a main body 210, a first terminal connection 220, a first relay 230, a second terminal connection 240, and a second. 2 A relay unit 250 and a board connection unit 260 are included.
  • the main body 210 has a shape in which a relatively wide wide portion 211 having a square shape and a relatively narrow narrow portion 212 are continuous in one direction.
  • the wide portion 211 extends to one side with respect to the narrow portion 212.
  • the width of the end 210a (hereinafter, referred to as “wide end 210a”) existing on the wide portion 211 side in the long direction in which the wide portion 211 and the narrow portion 212 are continuous is wide. It is wider than the width of the end portion 210b (hereinafter, referred to as "narrow end portion 210b”) existing on the 212 side.
  • the narrow end portion 210b of the main body portion 210 is formed with a triangular return portion 213 protruding from both end faces in the short direction.
  • the main body 210 has a first surface 210c and a second surface 210d that face each other.
  • a ridge portion 214 extending in the elongated direction extending over the wide portion 211 and the narrow portion 212 is formed by denting a portion of the first surface 210c corresponding to the ridge portion 214.
  • the ridge portion 214 may be formed on the second surface 210d by making the thickness of the portion of the main body portion 210 corresponding to the ridge portion 214 larger than that of the other portions.
  • the first terminal connection portion 220 is located on the side of the wide portion 211 of the main body portion 210, closer to the narrow portion 212, and the second terminal connection portion 240 is located on the side far from the narrow portion 212.
  • the first terminal connection portion 220 has a rectangular shape, is located away from the main body portion 210 in the direction in which the first surface 210c faces, and faces the same direction as the main body portion 210.
  • the main body 210 and the first terminal connection 220 are connected by the first relay 230.
  • the first relay unit 230 extends slightly laterally from the main body 210 and then diagonally extends toward the first terminal connection 220 and connects to the first terminal connection 220.
  • the second terminal connection portion 240 has a rectangular shape, is located on the opposite side of the main body portion 210 from the first terminal connection portion 220, and faces a direction orthogonal to the direction in which the main body portion 210 faces.
  • the main body 210 and the second terminal connection 240 are connected by the second relay 250.
  • the board connection portion 260 has a square shape in which the tip portion is largely rounded, and protrudes from the wide end portion 210a of the main body portion 210 in the elongated direction of the main body portion 210.
  • a circular through hole 261 is formed in the substrate connection portion 260.
  • the second output bus bar 300 includes a main body 310, a first terminal connection 320, a first relay 330, a second terminal connection 340, and a second. 2
  • the relay unit 350 and the board connection unit 360 are included.
  • the second output bus bar 300 has a shape symmetrical to the left and right of the first output bus bar 200 when viewed from the direction in which the surface of the main body 310 faces.
  • the configuration of the main body 310, the first terminal connection 320, the first relay 330, the second terminal connection 340, the second relay 350, and the board connection 360 is the main body 210, the first of the first output bus bar 200. This is the same as the terminal connection unit 220, the first relay unit 230, the second terminal connection unit 240, the second relay unit 250, and the board connection unit 260. That is, the main body 310 is composed of a wide portion 311 and a narrow portion 312, and the width of the end portion 310a (hereinafter, referred to as “wide end portion 310a”) existing on the wide portion 311 side is on the narrow portion 312 side.
  • narrow end portion 310b It is wider than the width of the existing end portion 310b (hereinafter referred to as "narrow end portion 310b"). Further, return portions 313 are formed on both end faces of the narrow end portion 310b. Further, the main body portion 310 has a first surface 310c and a second surface 310d, and a ridge portion 314 is formed on the second surface 310d. A through hole 361 is formed in the substrate connection portion 360.
  • each relay bus bar 400 has a main body 410, two first terminal connection units 420, two first relay units 430, and a board connection unit 440. Including.
  • the main body 410 has a shape in which a relatively wide wide portion 411 having a square shape and a relatively narrow narrow portion 412 are continuous in one direction.
  • the wide portion 411 extends to both sides with respect to the narrow portion 412.
  • the width of the end 410a (hereinafter, referred to as “wide end 410a”) existing on the wide portion 411 side in the long direction in which the wide portion 411 and the narrow portion 412 are continuous is the narrow portion. It is wider than the width of the end portion 410b (hereinafter, referred to as "narrow end portion 410a”) existing on the 412 side.
  • the narrow end portion 410b of the main body portion 410 is formed with a triangular return portion 413 protruding from both end faces in the short direction.
  • the main body 410 has a first surface 410c and a second surface 410d that face each other.
  • a ridge portion 414 extending in the elongated direction extending over the wide portion 411 and the narrow portion 412 is formed by denting a portion of the first surface 410c corresponding to the ridge portion 414.
  • the ridge portion 414 may be formed on the second surface 410d by making the thickness of the portion of the main body portion 410 corresponding to the ridge portion 414 larger than that of the other portions.
  • Two first terminal connection portions 420 are located on both sides of the narrow portion 412 of the main body portion 410 and in the vicinity of the wide portion 411.
  • Each first terminal connection portion 420 has a rectangular shape, is located away from the main body portion 410 in the direction in which the first surface 410c faces, and faces the same direction as the main body portion 410.
  • the main body 410 and the two first terminal connection units 420 are connected by two first relay units 430.
  • Each of the first relay portions 430 extends slightly laterally from the main body portion 410 and then extends obliquely toward the first terminal connection portion 420 side and is connected to the first terminal connection portion 420.
  • the board connection portion 440 has a square shape in which the tip portion is largely rounded, and protrudes from the wide end portion 410a of the main body portion 410 in the elongated direction of the main body portion 410.
  • a circular through hole 441 is formed in the substrate connection portion 440.
  • 5 (c) and 5 (d) are perspective views of the external output terminal 500 as viewed from two different directions.
  • the two external output terminals 500 are formed by cutting out a conductive metal plate, for example, a copper plate into a predetermined shape and performing processing such as bending, and have a predetermined three-dimensional plate shape.
  • the wall thickness of the external output terminal 500 is larger than the wall thickness of the first output bus bar 200, the second output bus bar 300, and the relay bus bar 400.
  • the two external output terminals 500 have the same configuration but are oriented in opposite directions when each is fixed to the hold case 600.
  • the external output terminal 500 includes a connection terminal portion 510 and two fitting portions 520.
  • the connection terminal portion 510 has a rectangular shape.
  • the connection terminal portion 510 is formed with a circular connection hole 511 in the central portion.
  • the two fitting portions 520 are formed at both ends of the connection terminal portion 510 in the elongated direction, and are bent perpendicular to the connection terminal portion 510.
  • Each fitting portion 520 has a rectangular shape that is long in the short direction of the connection terminal portion 510.
  • One side portion of each fitting portion 520 is connected to the connection terminal portion 510, and each fitting portion 520 has a circular through hole 521 on this one side portion.
  • FIG. 6 is a perspective view of the hold case 600.
  • 7 (a) is a plan view of the upper side surface portion 602 of the hold case 600
  • FIG. 7 (b) is a cross-sectional view of the hold case 600 cut along the AA'line of FIG. 7 (a).
  • .. 8 (a) is a plan view of the lower side surface portion 603 of the hold case 600
  • FIG. 8 (b) is a cross-sectional view of the hold case 600 cut along the line BB'of FIG. 8 (a).
  • .. 9 (a) and 9 (b) are a top view and a bottom view of the hold case 600, respectively
  • FIG. 9 (c) shows the hold case 600 cut along the CC'line of FIG. 9 (a). It is sectional drawing of the upper side surface part 602.
  • the hold case 600 is made of a resin material such as polybutylene terephthalate (PBT) or polyphenylene sulfide (PPS), and has a square box shape with one side open.
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • Each holding portion 610 is formed in a tubular shape having a U-shaped cross section, and includes a semicircular arcuate portion 611 and a linear linear portion 612 extending from both ends of the arcuate portion 611 to the opening end. Adjacent holding portions 610 share a linear portion 612. The four continuous arcuate portions 611 form the bottom surface portion 601 of the hold case 600.
  • the hold case 600 has four side surface portions, an upper side surface portion 602, a lower side surface portion 603, a left side surface portion 604, and a right side surface portion 605, which surround the four holding portions 610.
  • Circular screw holes 606 are formed on the opening 600a side at the four corners of the hold case 600. These screw holes 606 are used for attaching the cover 800 to the hold case 600.
  • the end faces of the upper side surface portion 602 and the lower side surface portion 603 on the opening 600a side that is, the front end faces 602a and 603a, have a portion that receives the circuit board 700 and is recessed slightly larger than the thickness of the circuit board 700.
  • a screw hole 607 is formed in the hole. These screw holes 607 are used for attaching the circuit board 700 to the hold case 600. Further, the outer surfaces 602b and 603b of the upper side surface portion 602 and the lower side surface portion 603 are recessed inward as a whole.
  • the upper side surface portion 602 includes a first fixing portion 620 for fixing the first output bus bar 200, a second fixing portion 630 for fixing the second output bus bar 300, and a relay bus bar 400 on the inner surface 602c side.
  • a third fixing portion 640 for fixing is provided.
  • the first fixing portion 620 is provided at a position between the two holding portions 610 on the right side
  • the second fixing portion 630 is provided at a position between the two holding portions 610 on the left side.
  • the fixing portion 640 is provided at a position between the two central holding portions 610.
  • the lower side surface portion 603 is provided with two third fixing portions 640 on the inner surface 603c side.
  • the third fixing portion 640 on the right side is provided at a position between the two holding portions 610 on the right side
  • the third fixing portion 640 on the left side is provided at a position between the two holding portions 610 on the left side.
  • the first fixing portion 620 has an elongated bottomed hole portion 621 on the left and right.
  • the inside of the hole 621 is formed in a shape corresponding to the first output bus bar 200.
  • the hole 621 has two wall surfaces 621a and 621b facing each other in the short direction.
  • the wall surface 621a located on the outer surface 602b side of the upper side surface portion 602 is slightly recessed in part thereof in order to avoid the ridge portion 214 formed on the main body portion 210 of the first output bus bar 200.
  • the wall surface 621b located on the inner surface 602c side of the upper side surface portion 602 extends from the entrance of the hole portion 621 toward the bottom at a position on the right side of the center, and communicates the hole portion 621 with the inside of the hold case 600.
  • a groove 622 is formed.
  • the hole portion 621 has a press-fitting portion 623 on the bottom side thereof into which the narrow end portion 210b of the main body portion 210 of the first output bus bar 200 is press-fitted.
  • the press-fitting portion 623 has two wall surfaces 623a and 623b facing the elongated direction of the hole portion 621 and orthogonal to the two wall surfaces 621a and 621b.
  • the width between the two wall surfaces 623a and 623b is slightly smaller than the width of the narrow end portion 210b because the narrow end portion 210b has the return portion 213.
  • the second fixing portion 630 has a bottomed hole 631 elongated on the left and right.
  • the inside of the hole 631 is formed in a shape corresponding to the second output bus bar 300.
  • the hole 631 has two wall surfaces 631a and 631b facing each other in the short direction.
  • the wall surface 631a located on the outer surface 602b side of the upper side surface portion 602 is slightly recessed in part thereof in order to avoid the ridge portion 314 formed in the main body portion 310 of the second output bus bar 300.
  • the wall surface 631b located on the inner surface 602c side of the upper side surface portion 602 extends from the entrance of the hole portion 631 toward the bottom at a position on the left side of the center, and communicates the hole portion 631 with the inside of the hold case 600.
  • a groove 632 is formed.
  • the hole portion 631 has a press-fitting portion 633 on the bottom side thereof into which the narrow end portion 310b of the main body portion 310 of the second output bus bar 300 is press-fitted.
  • the press-fitting portion 633 has two wall surfaces 633a and 633b that face each other in the elongated direction of the hole portion 631 and are orthogonal to the two wall surfaces 631a and 631b.
  • the width between the two wall surfaces 633a and 633b is slightly smaller than the width of the narrow end portion 310b because the narrow end portion 310b has the return portion 313.
  • the third fixing portion 640 has an elongated bottomed hole portion 641 on the left and right.
  • the inside of the hole 641 is formed in a shape corresponding to the relay bus bar 400.
  • the hole portion 641 has two wall surfaces 641a and 641b facing each other in the short direction.
  • the wall surface 641a located on the outer surface 602b and 603b side of the upper side surface portion 602 and the lower side surface portion 603 is slightly recessed in part thereof in order to avoid the ridge portion 414 formed in the main body portion 410 of the relay bus bar 400.
  • wall surfaces 641a located on the inner surfaces 602c and 603c of the upper side surface portion 602 and the lower side surface portion 603 extend from the entrance of the hole portion 641 toward the bottom to the inside of the hole portion 641 and the hold case 600 at both ends.
  • a groove 642 is formed to communicate the two.
  • the hole portion 641 has a press-fitting portion 643 on the bottom side thereof into which the narrow end portion 410b of the main body portion 410 of the relay bus bar 400 is press-fitted.
  • the press-fitting portion 643 has two wall surfaces 643a and 643b facing the long direction of the hole portion 641 and orthogonal to the two wall surfaces 641a and 641b.
  • the width between the two wall surfaces 643a and 643b is slightly smaller than the width of the narrow end portion 410b because the narrow end portion 410b has the return portion 413.
  • the upper side surface portion 602 has upper side surface portions on the right side of the hole portion 621 of the first fixing portion 620, the left side of the hole portion 631 of the second fixing portion 630, and the left and right sides of the hole portion 641 of the third fixing portion 640.
  • a square through hole 608 that penetrates 602 is formed.
  • the lower side surface portion 603 is also formed with square through holes 608 penetrating the lower side surface portion 603 on both the left and right sides of the holes 641 of the two third fixing portions 640.
  • the hold case 600 is provided with two terminal blocks 650 in symmetrical directions on the outer surface 602b of the upper side surface portion 602.
  • the terminal block 650 on the right side is provided at the same position as the first fixing portion 620 in the left-right direction, and the terminal block 650 on the left side is provided at the same position as the second fixing portion 630 in the left-right direction.
  • the two terminal blocks 650 have a shape corresponding to the external output terminal 500.
  • a nut 660 is embedded and fixed on the upper surface of each terminal block 650.
  • fitting hole portions 651 having a shape corresponding to the fitting portion 520 of the external output terminal 500 are provided.
  • a circular screw hole 652 is formed on the inner wall surface on the nut 660 side.
  • An opening 653 is formed in the front end surface 602a of the upper side surface portion 602 at a position corresponding to the two terminal blocks 650 on the left and right.
  • Each opening 653 has a predetermined shape and is connected to a fitting hole 651 on the front side of the terminal block 650.
  • the screw hole 652 on the front side of the terminal block 650 is exposed to the outside through the opening 653.
  • the opening 653 on the right side is connected to the first fixing portion 620, and when the first output bus bar 200 is fixed to the first fixing portion 620, the second terminal connecting portion 240 of the first output bus bar 200 opens this opening. It is housed in part 653.
  • the opening 653 on the left side is connected to the second fixing portion 630, and when the second output bus bar 300 is fixed to the second fixing portion 630, the second terminal connecting portion 340 of the second output bus bar 300 opens this opening. It is housed in part 653.
  • the end surface of the upper side surface portion 602 on the bottom surface portion 601 side that is, the rear end surface 602d, has a circular shape connected to the rear fitting hole portion 651 at a position corresponding to the rear screw hole 652 of the two left and right terminal blocks 650. Opening 654 is formed. The rear screw hole 652 is exposed to the outside through the opening 654.
  • the hold case 600 is provided with a connecting portion 670 used when connecting a plurality of power storage modules 1 to the left side surface portion 604 and the right side surface portion 605.
  • Each connecting portion 670 is composed of an upper claw portion 671 located on the upper side and having a downward hook shape, and a lower claw portion 672 located on the lower side and having an upward hook shape.
  • the portion where the upper claw portion 671 and the lower claw portion 672 are provided is recessed inward, whereby the recessed surface is connected between the upper claw portion 671 and the lower claw portion 672.
  • a gap is formed for the member (not shown) to enter.
  • a power storage unit is configured by connecting a plurality of power storage modules 1.
  • FIG. 10A is a plan view of the circuit board 700.
  • the circuit board 700 has a square shape, and an electric circuit is mounted on the printed circuit board.
  • the electronic circuit includes, for example, a voltage detection circuit that detects the voltage of each power storage device 100 and a balance circuit that aligns the voltage of each power storage device 100 according to the voltage detected by the voltage detection circuit.
  • the size of the circuit board 700 in the direction corresponding to the axial direction of the four power storage devices 100 is larger than the axial dimension of the four power storage devices 100.
  • the circuit board 700 has a first overhanging region 700a and a second overhanging region 700b shown by the alternate long and short dash line in FIG. 10A.
  • the first overhanging area 700a and the second overhanging area 700b are end faces and lower side surface portions 603 located on the upper side surface portion 602 side of the four power storage devices 100 in a state where the circuit board 700 is attached to the hold case 600. Each overhangs outward from the end face located on the side.
  • FIG. 10A for convenience, the positions of the four power storage devices 100 when the circuit board 700 is attached to the hold case 600 are shown by broken lines.
  • the circuit board 700 has a first through hole 701 corresponding to the board connection portion 260 of the first output bus bar 200 and a second through corresponding to the board connection portion 360 of the second output bus bar 300 in the first overhanging region 700a.
  • a hole 702 and a third through hole 703 corresponding to the board connection portion 440 of the relay bus bar 400 are formed, and two through-holes 703 corresponding to the board connection portion 440 of the two relay bus bars 400 are formed in the second overhanging area 700b.
  • a third through hole 703 is formed.
  • the first through hole 701, the second through hole 702, and the third through hole 703 are elongated holes, and the inside thereof is plated with metal. Further, the circuit board 700 is formed with circular mounting holes 704 at four corners.
  • FIG. 10B is a perspective view of the cover 800.
  • the cover 800 is formed in a square shape by a resin material such as polybutylene terephthalate (PBT) and polyphenylene sulfide (PPS), and has almost the same size as the hold case 600.
  • the cover 800 is formed with circular mounting holes 801 at four corners. The surface of the cover 800 is recessed around each mounting hole 801.
  • FIG. 11 is a flowchart showing an assembly procedure of the power storage module 1.
  • FIG. 12A is a diagram for explaining the power storage device mounting step S1
  • FIG. 12B is a diagram for explaining the bus bar fixing step S2
  • FIG. 12C is an external output. It is a figure for demonstrating the terminal fixing process S4.
  • FIG. 13A is a diagram for explaining the substrate mounting process S6, and
  • FIG. 13B is a diagram for explaining the cover mounting process S7.
  • the power storage module 1 includes a power storage device mounting step S1, a bus bar fixing step S2, a bus bar connecting step S3, an external output terminal fixing step S4, an external output terminal connecting step S5, and a substrate mounting step. It is assembled by performing S6 and the cover mounting step S7.
  • the power storage device mounting step S1 is performed.
  • the four power storage devices 100 are mounted on the four holding portions 610 of the hold case 600 and are held by the holding portions 610.
  • each power storage device 100 can be fixed to each holding part 610 by a double-sided adhesive tape (not shown) attached between each power storage device 100 and each holding part 610.
  • four power storage devices 100 are connected in series. Therefore, the four power storage devices 100 are arranged so that the adjacent power storage devices 100 face each other in opposite directions and the positive electrode terminal portion 110 and the negative electrode terminal portion 120 are adjacent to each other.
  • the bus bar fixing step S2 is performed.
  • the first output bus bar 200, the second output bus bar 300, and the three relay bus bars 400 have the first fixed portion 620, the second fixed portion 630, and 3, respectively. It is attached to the hold case 600 by being fixed to the third fixing portion 640.
  • the main bodies 210, 310, 410 of these bus bars 200, 300, 400 are press-fitted into the holes 621, 631, 641 of the corresponding fixing portions 620, 630, 640 and fixed to the fixing portions 620, 630, 640. Will be done.
  • FIG. 14 is a cross-sectional view showing a state in which the main body 410 of the relay bus bar 400 is press-fitted into the hole 641 of the third fixing portion 640 provided in the upper side surface portion 602.
  • the relay bus bar 400 is drawn in a transparent state.
  • the main body 410 of the relay bus bar 400 is inserted into the hole 641 of the third fixing portion 640 from the narrow end 410b side thereof, and the narrow end 410b is press-fitted into the press-fit portion 643 of the hole 641.
  • the press-fitting portion 643 as shown by the broken line in FIG. 14, the two wall surfaces 643a and 643b are pressed by the return portion 413 of the narrow end portion 410b to be elastically deformed and expanded. In this way, the main body 410 of the relay bus bar 400 is in a state of being difficult to come off from the hole 641 of the third fixed portion 640.
  • This is the same as the press-fit fixing of the third fixing portion 640 of the main body 410 of the relay bus bar 400 into the hole 641.
  • FIG. 15 shows the upper side surface of the hold case 600 in which the first output bus bar 200, the second output bus bar 300, and the relay bus bar 400 are fixed to the first fixed portion 620, the second fixed portion 630, and the third fixed portion 640.
  • 602 is a plan sectional view which cut at the position of the 1st terminal connection part 220, 320, 420 of each bus bar 200, 300, 400.
  • the two surfaces 210c and 210d of the main body portion 210 of the first output bus bar 200 become the two wall surfaces 621a of the hole portion 621 of the first fixing portion 620. It is sandwiched by 621b. At this time, the wall surface 621b of the hole 621 comes into contact with or approaches the first surface 210c of the main body 210, and the wall surface 621a of the hole 621 comes into contact with or approaches the second surface 210d of the main body 210.
  • the first relay portion 230 is passed through the groove 622 of the first fixing portion 620, and the first terminal connection portion 220 is connected to the positive electrode terminal portion 110 of the power storage device 100 and the inner surface 602c of the upper side surface portion 602. Located between.
  • the first terminal connection portion 220 is slightly separated from the positive electrode terminal portion 110.
  • the first terminal connecting portion 220 is aligned with the through hole 608 provided on the side of the first fixing portion 620, and the first terminal connecting portion 220 can be seen from the outside of the hold case 600 through the through hole 608.
  • the two surfaces 310c and 310d of the main body portion 310 of the second output bus bar 300 become the two wall surfaces 631a of the hole portion 631 of the second fixing portion 630. It is sandwiched by 631b. At this time, the wall surface 631b of the hole 631 comes into contact with or close to the first surface 310c of the main body 310, and the wall surface 631a of the hole 631 comes into contact with or close to the second surface 310d of the main body 310.
  • the first relay portion 330 is passed through the groove 632 of the second fixing portion 630, and the first terminal connection portion 320 is connected to the negative electrode terminal portion 120 of the power storage device 100 and the inner surface 602c of the upper side surface portion 602. Located between.
  • the first terminal connection portion 320 is slightly separated from the negative electrode terminal portion 120.
  • the first terminal connecting portion 320 is aligned with the through hole 608 provided on the side of the second fixing portion 630, and the first terminal connecting portion 320 can be seen from the outside of the hold case 600 through the through hole 608.
  • the two surfaces 410c and 410d of the main body portion 410 of the relay bus bar 400 are sandwiched by the two wall surfaces 641a and 641b of the hole portion 641 of the third fixing portion 640. .. At this time, the wall surface 641b of the hole 641 comes into contact with or close to the first surface 410c of the main body 410, and the wall surface 641a of the hole 641 comes into contact with or close to the second surface 410d of the main body 410.
  • two first relay portions 430 are passed through two grooves 642 of the third fixed portion 640, and one first terminal connection portion 420 is the positive electrode terminal portion 110 and the upper side surface of one power storage device 100. It is located between the inner surface 602c of the portion 602, and the other first terminal connection portion 420 is located between the negative electrode terminal portion 120 of the other power storage device 100 and the inner surface 602c of the upper side surface portion 602.
  • one of the first terminal connection portions 420 is slightly separated from the positive electrode terminal portion 110, and the other first terminal connection portion 420 is separated from the negative electrode terminal portion 120. Slightly separated.
  • the two first terminal connection portions 420 are aligned with the through holes 608 provided on both sides of the third fixing portion 640, and the first terminal connection portion 420 can be seen from the outside of the hold case 600 through the through holes 608.
  • the bus bar connecting step S3 is subsequently performed.
  • ultrasonic welding is performed using an ultrasonic welding machine (not shown).
  • the ultrasonic welding machine is provided with an ultrasonic horn H that generates ultrasonic vibration.
  • the ultrasonic horn H is schematically shown by a alternate long and short dash line.
  • An ultrasonic horn H for welding the first output bus bar 200 is passed through the through hole 608 and pushes the first terminal connection portion 220 of the first output bus bar 200 toward the positive electrode terminal portion 110 of the power storage device 100. ..
  • the first terminal connection portion 220 moves due to the elastic action of the first relay portion 230 and comes into contact with the positive electrode terminal portion 110. After that, the first terminal connection portion 220 is in a state of being pressed against the positive electrode terminal portion 110 by the ultrasonic horn H.
  • the ultrasonic horn H for welding the second output bus bar 300 is passed through the through hole 608, and the first terminal connection portion 320 of the second output bus bar 300 is connected to the negative electrode terminal of the power storage device 100 by the ultrasonic horn H.
  • the first terminal connection portions 220, 320, 420 of the first output bus bar 200, the second output bus bar 300, and the three relay bus bars 400 are applied. Is welded and fixed to the positive electrode terminal portion 110 or the negative electrode terminal portion 120 of the power storage device 100 corresponding to each.
  • the external output terminal fixing step S4 is performed.
  • the external output terminal fixing step S4 as shown in FIG. 12C, two external output terminals 500 are fixed to the corresponding terminal blocks 650 by screws 910.
  • FIG. 16 is a side sectional view of the upper side surface portion 602 of the hold case 600 showing a state in which the external output terminal 500 is fixed to the terminal block 650.
  • the second terminal connection portion 240 of the first output bus bar 200 which is not originally shown, is shown by a broken line.
  • the two fitting portions 520 of the external output terminal 500 are fitted into the two fitting holes 651 of the terminal block 650.
  • the through hole 521 of each fitting portion 520 matches the screw hole 652 provided in the fitting hole portion 651.
  • the connection hole 511 of the connection terminal portion 510 of the external output terminal 500 is aligned with the screw hole of the nut 660 of the terminal block 650.
  • the screw 910 is passed through the through hole 521 of the fitting portion 520 from the opening 653 on the front end surface 602a side of the upper side surface portion 602 and is fixed to the screw hole 652.
  • each external output terminal 500 is fixed to each terminal block 650.
  • the second terminal connecting portion 240 of the first output bus bar 200 is arranged in the opening 653 on the right side of the front end surface 602a of the upper side surface portion 602.
  • the hold case 600 overlaps the second terminal connecting portion 240 and the fitting portion 520 in the opening direction. (See FIGS. 2 and 16).
  • the second terminal connecting portion 340 of the second output bus bar 300 is arranged in the opening 653 on the left side of the front end surface 602a of the upper side surface portion 602.
  • the external output terminal connecting step S5 is subsequently performed.
  • ultrasonic welding is performed using an ultrasonic welding machine.
  • FIG. 16 the ultrasonic horn H of an ultrasonic welding machine is schematically shown by a chain line.
  • the ultrasonic horn H for welding the external output terminal 500 on the right side comes into contact with the second terminal connection portion 240 of the first output bus bar 200 from the opening 600a side of the hold case 600.
  • the ultrasonic horn H for welding the external output terminal 500 on the left side comes into contact with the second terminal connection portion 340 of the second output bus bar 300 from the opening 600a side of the hold case 600.
  • the second terminal connection portions 240 and 340 of the first output bus bar 200 and the second output bus bar 300 are subjected to the corresponding external outputs. It is welded to and fixed to the terminal 500.
  • the substrate mounting step S6 is performed.
  • the circuit board 700 is attached to the hold case 600 so as to cover the opening 600a.
  • the circuit board 700 is fitted into the recessed portions formed in the front end surface 602a of the upper side surface portion 602 and the front end surface 603a of the lower side surface portion 603.
  • the four mounting holes 704 of the circuit board 700 align with the four screw holes 607 of the hold case 600.
  • Four screws 920 are passed through each mounting hole 704 and fastened to each screw hole 607.
  • the circuit board 700 is fixed to the hold case 600.
  • the board connection portion 260 of the first output bus bar 200, the board connection portion 360 of the second output bus bar 300, and the board connection portion of the relay bus bar 400 is passed through the first through hole 701, the second through hole 702, and the third through hole 703 in the first overhanging region 700a of the circuit board 700, respectively, and these through holes 701, 702, and 703 are soldered. It is electrically connected to and fixed to the circuit board 700.
  • the board connection portion 440 of the two relay bus bars 400 is passed through the two third through holes 703 in the second overhanging region 700b of the circuit board 700 and soldered. Is electrically connected to these third through holes 703 and fixed to the circuit board 700.
  • the cover mounting step S7 is performed.
  • the cover 800 is mounted on the hold case 600 so as to cover the opening 600a from the outside of the circuit board 700.
  • the four mounting holes 801 of the cover 800 align with the four screw holes 606 of the hold case 600.
  • Four screws 930 are passed through the mounting holes 801 and fastened to the screw holes 606.
  • the cover 800 is fixed to the hold case 600.
  • the bus bar fixing step S2 is performed after the power storage device mounting step S1, but the power storage device mounting step S1 may be performed after the bus bar fixing step S2. That is, which of the power storage device mounting step S1 and the bus bar fixing step S2 may be performed first.
  • the power storage module 1 can be used as an auxiliary power source for, for example, an electric vehicle or a hybrid vehicle.
  • the external output terminal 500 on the right side serves as a terminal on the positive electrode side
  • the external output terminal 500 on the left side serves as a terminal on the negative electrode side.
  • the positive electrode side external terminal 500 and the negative electrode side external output terminal 500 are screwed to the connection holes 511, respectively. It is fixed by a stop.
  • the power storage module 1 includes a power storage device 100 having terminal portions (positive electrode terminal portion 110, negative electrode terminal portion 120) on end faces, a hold case 600 in which the power storage device 100 is held, and a bus bar connected to the terminal portions 110 and 120.
  • First output bus bar 200, second output bus bar 300, relay bus bar 400) and fixed portions (first fixed portion 620, second fixed portion 630, which are provided in the hold case 600 and to which the bus bars 200, 300, 400 are fixed.
  • a third fixing portion 640 is provided.
  • the bus bars 200, 300, 400 include first terminal connection portions 220, 320, 420 connected to the terminal portions 110, 120, and main body portions 210, 310, 410 fixed to the fixed portions 620, 630, 640. Including.
  • the hold case 600 a plurality of (four) power storage devices 100 are held in a state where their side surfaces are arranged so as to be adjacent to each other.
  • the fixing portions 620, 630, 640 sandwich the surfaces 210c, 210d, 310c, 310d, 410c, 410d of the main body portions 210, 310, 410, that is, the main body portions 210, 310, 410 are in the thickness direction thereof. It has two wall surfaces 621a, 621b, 631a, 631b, 641a, 641b sandwiched between the two walls.
  • the main body portions 210, 310, 410 are fixed to the fixed portions 620, 630, 640, when the power storage module 1 vibrates, it is difficult to swing in the thickness direction thereof. Therefore, when the power storage module 1 vibrates, the bus bars 200, 300, and 400 are less likely to swing in the thickness direction as a whole, so that damage to the bus bars 200, 300, and 400 can be prevented.
  • the fixing portions 620, 630 and 640 include the holes 621, 631 and 641, and the main body portions 210, 310 and 410 are press-fitted into the holes 621, 631 and 641.
  • the holes 621, 631, 641 include two wall surfaces 623a, 623b, 633a, 633b, 643a, 643b
  • the main body portions 210, 310, 410 include two wall surfaces 623a
  • Two return portions 213, 313, 413 are provided to project from the two end faces facing the 623b, 633a, 633b, 643a, 643b and press the wall surfaces 623a, 623b, 633a, 633b, 643a, 643b, respectively.
  • the main body portions 210, 310, 410 are press-fitted into the holes 621, 631, 641, it is difficult to remove them from the holes 621, 631, 641. Further, since the main body portions 210, 310, 410 are more difficult to move in the holes 621, 631, 641, when the power storage module 1 vibrates, it is more difficult to swing in the thickness direction thereof, and is orthogonal to the thickness direction. It becomes difficult to swing in the direction of
  • main body portions 210, 310, 410 are on opposite sides of the narrow end portions 210b, 310b, 410b and the narrow end portions 210b, 310b, 410b, and are wider than the narrow end portions 210b, 310b, 410b. It includes wide end portions 210a, 310a, 410a and is press-fitted into holes 621, 631, 641 from the narrow end portions 210b, 310b, 410b side.
  • the main body portions 210, 310, 410 when the main body portions 210, 310, 410 are press-fitted into the holes 621, 631, 641, the wide end portions 210a, 310a, 410a of the main body portions 210, 310, 410 can be easily pressed.
  • the main body portions 210, 310, 410 can be smoothly press-fitted into the holes 621, 631, 641, and the bus bars 200, 300, 400 can be firmly fixed to the fixing portions 620, 630, 640.
  • main body portions 210, 310, 410 have protrusions 214, 314 extending in a direction in which at least a part of one surface (second surface 210d, 310d, 410d) protrudes and is press-fitted into the holes 621, 631, 641. It has 414.
  • the main bodies 210, 310, 410 when the main bodies 210, 310, 410 are press-fitted into the holes 621, 631, 641, the main bodies 210, 310, 410 are less likely to bend or break, so that the main bodies 210, 310 , 410 can be smoothly press-fitted into the holes 621, 631, 641, and the bus bars 200, 300, 400 can be firmly fixed to the fixing portions 620, 630, 640.
  • the main bodies 210, 310, and 410 are reinforced by the ridges 214, 314, and 414, the main bodies 210, 310, and 410 are less likely to swing in the thickness direction when the power storage module 1 vibrates. As a result, the bus bars 200, 300, and 400 are less likely to swing in the thickness direction as a whole, and damage to the bus bars 200, 300, and 400 is more likely to be prevented.
  • the main bodies 210, 310, 410 are located apart from the terminal portions 110, 120 and the first terminal connection portions 220, 320, 420, and the main bodies 210, 310, 410 and the main bodies 210, 310, 410.
  • the configuration is such that the first terminal connection portions 220, 320, 420 are connected by the first relay portions 230, 330, 430.
  • the outer peripheral side portion of the hold case 600 is easily fixed to the installation portion. Therefore, when the power storage module 1 vibrates, the amplitude at the central portion of the hold case 600 tends to be larger than the amplitude at the outer peripheral portion.
  • the main body portions 210, 310, 410 of the bus bars 200, 300, 400 are separated from the terminal portions 110, 120, so that they are separated from the central portion of the hold case 600. Therefore, the power storage module 1 When the body vibrates, the main body 210, 310, 410 becomes more difficult to swing in the thickness direction. As a result, the bus bars 200, 300, and 400 are less likely to swing in the thickness direction as a whole, and damage to the bus bars 200, 300, and 400 is more likely to be prevented.
  • terminal portions 110 and 120 of the power storage device 100 face the side surface portions (upper side surface portion 602 and lower side surface portion 603) of the hold case 600, and the first terminal connection portions 220 and 320 of the bus bars 200, 300 and 400,
  • the 420 is connected to the terminal portions 110 and 120 between the terminal portions 110 and 120 and the side surface portions 602 and 603.
  • the side surface portions 602 and 603 are provided with through holes 608 at positions where the first terminal connection portions 220, 320 and 420 can be seen from the outside of the hold case 600.
  • the ultrasonic horn H passed through the through hole 608 is brought into contact with the first terminal connection portions 220, 320, 420, and the terminal portions 110, 120 and the second One terminal connection portions 220, 320, 420 can be welded. Therefore, with the plurality of power storage devices 100 and the bus bars 200, 300, 400 mounted on the hold case 600, the terminal portions 110, 120 and the bus bars 200, 300, 400 can be connected by welding.
  • the power storage module 1 is fixed to the hold case 600, and further includes an external output terminal 500 for outputting the electric power of the plurality of power storage devices 100 to the outside of the power storage module 1.
  • the bus bar includes a relay bus bar 400 that electrically connects the terminals 110 and 120 of the adjacent power storage devices 100, and a first output bus bar 200 and a first output bus bar that electrically connects the terminals 110 and 120 and the external output terminal 500. Includes a two-output bus bar 300.
  • the first output bus bar 200 and the second output bus bar 300 have second terminal connection portions 240 and 340 connected to the external output terminal 500.
  • the second terminal connection portions 240 and 340 overlap the external output terminal 500 in the direction in which the hold case 600 opens.
  • the ultrasonic horn H can be brought into contact with the second terminal connection portion 240 and 340 from the opening direction of the hold case 600 to weld the second terminal connection portion 240 and 340 and the external output terminal 500. Therefore, in a state where the plurality of power storage devices 100, bus bars 200, 300, 400 and the external output terminal 500 are mounted on the hold case 600, the first output bus bar 200, the second output bus bar 300 and the external output terminal 500 are welded together. You can connect.
  • the external output terminal 500 has a fitting portion 520
  • the hold case 600 has a fitting hole portion 651 into which the fitting portion 520 is fitted and an opening 653 connected to the fitting hole portion 651. There is. Then, the second terminal connection portion 240, 340 overlaps the fitting portion 520 through the opening 653.
  • the external output terminal 500 is firmly fixed to the hold case 600 by fitting the fitting portion 520 into the fitting hole portion 651.
  • the second terminal connection portion 240, 340 is configured to overlap the fitting portion 520 fitted into the fitting hole portion 651 through the opening 653, the fitting portion 520 is used to be used.
  • the two-terminal connection portions 240 and 340 can be fixedly connected to the external output terminal 500.
  • the power storage module 1 further includes a circuit board 700 whose board surface faces the side surface of the power storage device 100.
  • the bus bars 200, 300, and 400 are provided with substrate connection portions 260, 360, and 440 that extend from the main body portions 210, 310, and 410 and are connected to the circuit board 700.
  • the terminals 110 and 120 of the power storage device 100 and the circuit board 700 can be electrically connected by the bus bars 200, 300 and 400. Further, since the circuit board 700 is superposed on the power storage device 100 so that the board surface of the circuit board 700 faces the side surface of the power storage device 100, the power storage module 1 can be miniaturized.
  • the circuit board 700 has an overhanging region (first overhanging region 700a, second overhanging region 700b) extending outward from the end face of the power storage device 100, and the bus bars 200, 300, and 400 overhang. It is connected to the circuit board 700 in the regions 700a and 700b.
  • the terminal portions 110 and 120 on one end surface facing the inner surface 602c of the upper side surface portion 602 are connected to the circuit board 700 in the first overhanging region 700a projecting outward from the one end surface.
  • the terminal portions 110 and 120 on the other end face of the lower side surface portion 603 facing the inner surface 603c of the power storage device 100 are connected to the circuit board 700 in the second overhanging region 700b overhanging the other end face. Will be done.
  • the bus bars 200, 300, 400 connected to the terminal portions 110, 120 of the power storage device 100 are extended toward the overhanging regions 700a, 700b in the direction along the end face of the power storage device 100 to form a circuit. Since the board 700 can be connected, the bus bars 200, 300, and 400 are less likely to be long. Therefore, when the power storage module 1 vibrates, the bus bars 200, 300, and 400 are less likely to swing in the thickness direction thereof, and damage to the bus bars 200, 300, and 400 can be prevented.
  • fixing portions (first fixing portion 620, second fixing portion 630, third fixing portion 640) are provided on the side surface portions (upper side surface portion 602, lower side surface portion 603) of the hold case 600. ing.
  • the outer peripheral side portion of the hold case 600 is easily fixed to the installation portion. Therefore, when the power storage module 1 vibrates, the amplitude at the side surface portions 602 and 603 of the hold case 600 tends to be smaller than the amplitude inside the hold case 600.
  • the bus bars 200, 300, 400 are fixed to the fixing portions 620, 630, 640 provided on the side surface portions 602, 603, the bus bars 200, 300, 400 further swing in the thickness direction. It becomes difficult to prevent damage to the bus bars 200, 300, 400, and the like.
  • the bus bars 200, 300, and 400 do not have a portion facing the side surface of the power storage device 100.
  • the bus bars 200, 300, 400 do not exist in the central region of the hold case 600 where the side surface of the power storage device 100 exists. Therefore, when the power storage module 1 vibrates, the bus bars 200, 300, 400 Is less likely to swing in the thickness direction, and damage to the bus bars 200, 300, 400 and the like can be prevented.
  • the method of manufacturing the power storage module 1 includes a power storage device mounting step S1 for holding the power storage device 100 having terminals 110 and 120 on the end faces in the hold case 600, and fixing portions 620 and 630 of the hold case 600 for the bus bars 200, 300 and 400.
  • 640 includes a bus bar fixing step S2, and a bus bar connecting step S3 for connecting the bus bars 200, 300, 400 to the terminal portions 110, 120.
  • the bus bars 200, 300, 400 include first terminal connection portions 220, 320, 420 connected to the terminal portions 110, 120, and main body portions 210, 310, 410 fixed to the fixed portions 620, 630, 640.
  • Including, fixing portions 620, 630, 640 include holes 621, 631, 641.
  • the main body portions 210, 310, 410 are inserted into the holes 621, 631, 641.
  • the main bodies 210, 310, 410 are less likely to swing in the thickness direction thereof. Therefore, when the power storage module 1 vibrates, the bus bars 200, 300, and 400 are less likely to swing in the thickness direction as a whole, so that damage to the bus bars 200, 300, and 400 can be prevented.
  • the main body portions 210, 310 and 410 are press-fitted into the holes 621, 631 and 641.
  • the holes 621, 631, 641 include two wall surfaces 623a, 623b, 633a, 633b, 643a, 643b
  • the main body portions 210, 310, 410 include two wall surfaces 623a, 623b, 633a
  • Two return portions 213, 313, and 413 are provided, respectively, protruding from the two end faces facing the 633b, 643a, and 643b.
  • the two return portions 213, 313, 413 press the two wall surfaces 623a, 623b, 633a, 633b, 643a, 643b.
  • the main body portions 210, 310, 410 are less likely to come off from the holes 621, 631, 641. Further, when the power storage module 1 vibrates, the main body portions 210, 310, and 410 are less likely to swing in the thickness direction thereof, and are also less likely to swing in the direction orthogonal to the thickness direction.
  • main body portions 210, 310, 410 are on opposite sides of the narrow end portions 210b, 310b, 410b and the narrow end portions 210b, 310b, 410b, and are wider than the narrow end portions 210b, 310b, 410b. Includes wide wide end portions 210a, 310a, 410a.
  • the main body portions 210, 310, 410 are press-fitted into the holes 621, 631, 641 from the narrow end portions 210b, 310b, 410b side.
  • the main body portions 210, 310, 410 when the main body portions 210, 310, 410 are press-fitted into the holes 621, 631, 641, the wide end portions 210a, 310a, 410a of the main body portions 210, 310, 410 can be easily pressed.
  • the main body portions 210, 310, 410 can be smoothly press-fitted into the holes 621, 631, 641, and the bus bars 200, 300, 400 can be firmly fixed to the fixing portions 620, 630, 640.
  • main body portions 210, 310, 410 are formed with ridge portions 214, 314, 414 in which at least a part of the second surfaces 210d, 310d, 410d protrudes and extends in one direction.
  • the main body portions 210, 310, 410 are press-fitted into the holes 621, 631, 641 along the one direction.
  • the main bodies 210, 310, 410 when the main bodies 210, 310, 410 are press-fitted into the holes 621, 631, 641, the main bodies 210, 310, 410 are less likely to bend or break, so that the main bodies 210, 310 , 410 can be smoothly press-fitted into the holes 621, 631, 641, and the bus bars 200, 300, 400 can be firmly fixed to the fixing portions 620, 630, 640.
  • the side surface portions 602 and 603 of the hold case 600 are provided with through holes 608 at positions where the first terminal connection portions 220, 320 and 420 can be seen from the outside of the hold case 600.
  • the ultrasonic horn H passed through the through hole 608 is brought into contact with the first terminal connection portions 220, 320, 420 to bring the terminal portions 110, 120 and the first terminal connection portions 220, 320, 420. To weld.
  • the terminal portions 110, 120 and the bus bars 200, 300, 400 can be connected by welding while the plurality of power storage devices 100 and the bus bars 200, 300, 400 are mounted on the hold case 600.
  • the bus bars 200, 300, 400 include first relay units 230, 330, 430 that connect the first terminal connection portions 220, 320, 420 and the main body units 210, 310, 410, and the first terminal connection portions 220, 320, 420 is a position separated from the terminals 110 and 120 (broken line in FIG. 15) and a contact position in contact with the terminals 110 and 120 (solid line in FIG. 15) due to the elastic action of the first relay portions 230, 330 and 430. It is configured to be displaceable between.
  • the first terminal connecting portions 220, 320, 420 at the separated positions are moved to the contact positions by pressing with the ultrasonic horn H and welded to the terminal portions 110, 120.
  • the bus bar fixing step S2 when the bus bars 200, 300, 400 are fixed to the fixing portions 620, 630, 640, the first terminal connecting portions 220, 320, 420 move to the separated positions. , It is less likely to interfere with the terminal portions 110 and 120, and smooth fixing can be performed.
  • the bus bar connection step S3 the first terminal connection portions 220, 320, 420 move to the contact position and come into contact with the terminal portions 110, 120, so that the first terminal connection portions 220, 320, 420 and the terminal portion 110 , 120 can be easily welded.
  • the manufacturing method of the power storage module 1 further includes an external output terminal fixing step S4 for fixing the external output terminal 500 for outputting the electric power of the plurality of power storage devices 100 to the outside of the power storage module 1 to the hold case 600.
  • the bus bar includes a relay bus bar 400 that electrically connects the terminals 110 and 120 of the adjacent power storage devices 100, and a first output bus bar 200 and a first output bus bar that electrically connects the terminals 110 and 120 and the external output terminal 500. Includes a two-output bus bar 300.
  • the first output bus bar 200 and the second output bus bar 300 include second terminal connection portions 240 and 340 that are connected to the external output terminal 500 in the direction in which the hold case 600 opens.
  • the ultrasonic horn H is brought into contact with the second terminal connection portion 240, 340 from the opening direction of the hold case 600, and the second terminal connection portion 240, 340 and the external output terminal 500 are brought into contact with each other.
  • the external output terminal connecting step S5 to be welded is further included.
  • the first output bus bar 200, the second output bus bar 300 and the external output terminal It can be connected to 500 by welding.
  • bus bars 200, 300, 400 are provided with substrate connecting portions 260, 360, 440 extending from the main body portions 210, 310, 410. Then, in the method of manufacturing the power storage module 1, the circuit board 700 is mounted on the hold case 600 so that the board surface faces the side surface of the power storage device 100, and the board connection portions 260, 360, and 440 are connected to the circuit board 700.
  • the substrate mounting step S6 is further included.
  • the terminals 110 and 120 of the power storage device 100 and the circuit board 700 can be electrically connected by the bus bars 200, 300 and 400. Further, since the circuit board 700 is stacked on the power storage device 100 so that the board surface of the circuit board 700 faces the side surface of the power storage device 100, the power storage module 1 can be miniaturized.
  • a power storage unit can be configured by combining a plurality of power storage modules 1 of the above embodiment.
  • a power storage unit 10 composed of four power storage modules 1 having no cover 800 will be described.
  • a power storage unit in which another number of power storage modules 1 are combined can be realized.
  • FIG. 17A is a perspective view of the power storage unit 10 according to the modified example.
  • the connecting member 950 is shown by a alternate long and short dash line.
  • FIG. 17 (b) is a schematic view showing another configuration example of the power storage unit 10 according to the modified example
  • FIG. 17 (c) shows still another configuration example of the power storage unit 10 according to the modified example. It is a schematic diagram.
  • the power storage unit 10 includes four power storage modules 1 having no cover 800 and two connecting members 950 for connecting the power storage modules 1.
  • the four power storage modules 1 having no cover 800 are arranged so as to be in close contact with each other in the direction in which the four power storage devices 100 and the circuit board 700 provided therein are lined up, and the left and right connecting portions 670. It is connected by the connecting member 950 mounted on each of the above.
  • the four power storage modules 1 are all oriented in the same direction, and the opening 600a of the hold case 600 of the power storage module 1 on the rear side and the bottom surface portion 601 of the hold case 600 of the power storage module 1 on the front side face each other.
  • the two connecting members 950 may be fixed to the left and right side surface portions 604 and 605 of the hold case 600 of the front power storage module 1 and the rearmost power storage module 1 by screwing or the like.
  • the circuit boards 700 of the three power storage modules 1 are covered with the power storage modules 1 existing in front of each power storage module 1. Therefore, the circuit board 700 can be protected even if there is no cover 800 that covers the opening 600a of the hold case 600.
  • the circuit board 700 may be left exposed to the outside as shown in FIG. 17 (a), but it is held as shown in FIG. 17 (b). It is better to protect the circuit board 700 by covering the opening 600a of the case 600 with the cover 800.
  • the four power storage modules 1 can be connected.
  • the power storage unit 10 may be configured. In this configuration, the circuit board 700 can be protected without the cover 800 in all four power storage modules 1.
  • the power storage device 100 is held inside the square box-shaped hold case 600.
  • the power storage device 100 may be held in a holder having a predetermined shape other than the square box-shaped hold case 600.
  • the positive electrode terminal portion 110 and the negative electrode terminal portion 120 of the power storage device 100, and the first terminal connection portions 220, 320, 420 of the first output bus bar 200, the second output bus bar 300 and the relay bus bar 400 may be connected and fixed by ultrasonic welding, it may be connected and fixed by welding other than ultrasonic welding, or may be connected and fixed by a joining method other than welding, for example, soldering.
  • the main bodies 210, 310, and 410 of the first output bus bar 200, the second output bus bar 300, and the relay bus bar 400 have the first fixed portion 620, the second fixed portion 630, and the third fixed portion 640. It was press-fitted into the holes 621, 631 and 641 of the above. However, even if the main body portions 210, 310, 410 of these bus bars 200, 300, 400 are embedded by insert molding at positions corresponding to the fixing portions on the upper side surface portion 602 and the lower side surface portion 603 of the hold case 600. Good.
  • both surfaces 210c, 210d, 310c, 310d, 410c, 410d are sandwiched by the two wall surfaces facing the two surfaces 210c, 210d, 310c, 310d, 410c, 410d of the main body 210, 310, 410. It will be.
  • the power storage module 1 is not limited to this, and other numbers of power storage devices 100 including one case are used for the power storage module 1. May be good. Further, the power storage module 1 may have a configuration in which the plurality of power storage devices 100 are connected in parallel instead of being connected in series.
  • the power storage module includes a power storage device having a terminal portion on an end surface, a holder for holding the power storage device, a circuit board whose substrate surface faces the side surface of the power storage device, and the like.
  • a bus bar for electrically connecting the terminal portion and the circuit board is provided.
  • the circuit board has an overhanging region that projects outward from the end face of the power storage device, and the bus bar is connected to the circuit board in the overhanging region.
  • the power storage device has a first terminal portion on one end face and a second terminal portion on the other end face opposite to the one end face.
  • the circuit board has a first overhanging region that projects outward from one end face of the power storage device, and a second overhanging region that projects outward from the other end face of the power storage device.
  • the first terminal portion is connected to the first overhang region by the bus bar, and the second terminal portion is connected to the second overhang region by the bus bar.
  • the bus bar is provided at a terminal connection portion connected to the terminal portion, a main body portion located away from the terminal portion from the terminal connection portion, and an end portion of the main body portion.
  • a board connection portion to be connected to the circuit board.
  • the main body portion has a ridge portion in which at least a part of one surface of the main body portion protrudes.
  • a fixing portion for fixing the bus bar is provided on the side surface portion of the holder.
  • the power storage module includes a power storage device having a terminal portion on an end surface, a holder for holding the power storage device, a circuit board whose substrate surface faces the side surface of the power storage device, and the like.
  • a bus bar for electrically connecting the terminal portion and the circuit board is provided. The bus bar does not have a portion facing the side surface of the power storage device.
  • the power storage module includes the plurality of the power storage devices.
  • the plurality of power storage devices are held in the holder in a state where the side surfaces thereof are arranged side by side.
  • the bus bar includes a relay bus bar having two terminal connection parts for electrically connecting the terminal parts of the adjacent power storage devices.
  • the power storage unit includes a plurality of power storage modules according to the first aspect or the second aspect.
  • the circuit board is housed inside the holder, and the power storage device and the circuit board are arranged and connected in a line-up direction.
  • the plurality of power storage modules each include a plurality of the power storage devices.
  • the plurality of power storage devices are held in the holder in a state where the side surfaces thereof are arranged side by side.
  • the present invention is useful for power storage modules used in various electronic devices, electrical devices, industrial devices, electrical components of vehicles, and the like.
  • Power storage module 10 Power storage unit 100 Power storage device 110 Positive electrode terminal (terminal) 120 Negative electrode terminal (terminal) 200 1st output bus bar (bus bar, 2nd bus bar) 210 Main body (fixed part) 210a Wide end (second end) 210b Narrow end (first end) 213 Return part (protruding part) 214 Protruding part 220 First terminal connection part (terminal connection part) 230 1st relay section (relay section) 240 2nd terminal connection (other terminal connection) 260 Board connection 300 2nd output bus bar (bus bar, 2nd bus bar) 310 Main body (fixed part) 310a wide end (second end) 310b narrow end (first end) 313 Return part (protruding part) 314 Protrusion part 320 1st terminal connection part (terminal connection part) 330 1st relay section (relay section) 340 2nd terminal connection (other terminal connection) 360 Board connection 400 Relay bus bar (bus bar, 1st bus bar) 410 Main body (fixed part) 410a wide end

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)
PCT/JP2020/013936 2019-03-29 2020-03-27 蓄電モジュールおよび蓄電モジュールの製造方法 WO2020203734A1 (ja)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007012487A (ja) * 2005-06-30 2007-01-18 Sanyo Electric Co Ltd 電源装置
US20150171404A1 (en) * 2013-12-16 2015-06-18 Samsung Sdi Co., Ltd. Battery module
WO2019049671A1 (ja) * 2017-09-05 2019-03-14 株式会社オートネットワーク技術研究所 サーミスタの取付け構造

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Publication number Priority date Publication date Assignee Title
JPH01168953U (enrdf_load_stackoverflow) * 1988-05-19 1989-11-29
JPH0527960U (ja) * 1991-09-18 1993-04-09 三菱電機株式会社 電池ボツクス
JPH0543461U (ja) * 1991-11-11 1993-06-11 株式会社田宮模型 電池ボツクス
JPH0613050U (ja) * 1992-07-20 1994-02-18 村田機械株式会社 電池ホルダの電極板取付構造
JP2000323109A (ja) * 1999-05-12 2000-11-24 Toyota Central Res & Dev Lab Inc 電池モジュール
CN111902961B (zh) * 2018-03-27 2023-05-30 松下知识产权经营株式会社 蓄电模块

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007012487A (ja) * 2005-06-30 2007-01-18 Sanyo Electric Co Ltd 電源装置
US20150171404A1 (en) * 2013-12-16 2015-06-18 Samsung Sdi Co., Ltd. Battery module
WO2019049671A1 (ja) * 2017-09-05 2019-03-14 株式会社オートネットワーク技術研究所 サーミスタの取付け構造

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