WO2021060219A1 - Module de stockage d'énergie - Google Patents

Module de stockage d'énergie Download PDF

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Publication number
WO2021060219A1
WO2021060219A1 PCT/JP2020/035646 JP2020035646W WO2021060219A1 WO 2021060219 A1 WO2021060219 A1 WO 2021060219A1 JP 2020035646 W JP2020035646 W JP 2020035646W WO 2021060219 A1 WO2021060219 A1 WO 2021060219A1
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WO
WIPO (PCT)
Prior art keywords
power storage
holder
bus bar
device group
storage module
Prior art date
Application number
PCT/JP2020/035646
Other languages
English (en)
Japanese (ja)
Inventor
小林　亨
章平 山中
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.)
Filing date
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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 JP2021548896A priority Critical patent/JPWO2021060219A1/ja
Publication of WO2021060219A1 publication Critical patent/WO2021060219A1/fr

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    • 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
    • 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
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/18—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
    • 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
    • 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
    • H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • 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
    • 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.
  • Patent Document 1 describes a battery bag in which a battery pack composed of a group of batteries of a plurality of cells is provided in a battery case.
  • a predetermined number of cells are arranged in the front-rear direction of the battery case so that their positive terminals face the same direction to form a battery unit, and the battery unit and the positive terminal have opposite directions. And are adjacent to each other to form a battery block, and a predetermined number of battery blocks are arranged in the left-right direction of the battery case to form a battery set.
  • a predetermined number of single batteries of the battery unit are connected in parallel, two battery units are connected in series, and a predetermined number of battery blocks are connected in series by a bus bar.
  • the above battery pack can be mounted on a vehicle such as a hybrid vehicle or an electric vehicle as a power supply device, for example.
  • the battery pack is likely to be vibrated while the vehicle is running. If the battery pack does not have sufficient seismic resistance, vibration may lead to damage to the battery pack such as breakage between each cell and the bus bar.
  • an object of the present invention is to provide a power storage module having excellent vibration resistance.
  • the main aspect of the present invention relates to a power storage module.
  • the power storage module according to this embodiment is electrically connected between a plurality of power storage devices having a positive electrode terminal at one end and a negative electrode terminal at the other end, a holder unit holding the plurality of power storage devices, and the plurality of power storage devices. It is equipped with a bus bar to connect to the target.
  • the plurality of power storage devices include a first device group in which one end thereof is arranged so as to face the first direction, and the holder unit includes a first holder and a second holder. Then, the first device group is sandwiched and held between the first holder and the second holder.
  • FIG. 1 is a perspective view of a power storage module according to an embodiment.
  • FIG. 2 is a perspective view of the core unit according to the embodiment.
  • FIG. 3 is an exploded perspective view of the core unit according to the embodiment.
  • FIG. 4 is an exploded perspective view of the power storage device block according to the embodiment.
  • FIG. 5A is a perspective view of the first single-sided holder viewed from the right front according to the embodiment, and
  • FIG. 5B is a perspective view of the first single-sided holder viewed from the left rear according to the embodiment. It is a perspective view of.
  • FIG. 6A is a perspective view of the first double-sided holder viewed from the right front according to the embodiment, and FIG.
  • FIG. 6B is a perspective view of the first double-sided holder viewed from the left rear according to the embodiment. It is a perspective view of.
  • FIG. 7A is a perspective view of the second double-sided holder viewed from the front right according to the embodiment, and FIG. 7B is a second double-sided holder viewed from the rear left according to the embodiment.
  • FIG. 8A is a perspective view of the upper busbar unit according to the embodiment, and FIG. 8B is an upper busbar and a positive electrode output busbar according to the embodiment in a state where the outer body is not covered. It is a perspective view of the negative electrode output bus bar.
  • FIG. 9A is a perspective view of the lower busbar unit according to the embodiment, and FIG.
  • FIG. 9B is a perspective view of the lower busbar unit according to the embodiment without being covered with an exterior body. is there.
  • FIG. 10A is a side sectional view of the upper busbar unit according to the embodiment
  • FIG. 10B is a side sectional view of the lower busbar unit according to the embodiment.
  • 11 (a) and 11 (b) are perspective views of the positive electrode external output terminal and the negative electrode external output terminal, respectively, according to the embodiment.
  • FIG. 12 is a perspective view of the circuit board according to the embodiment.
  • FIG. 13 is a plan sectional view of the power storage device block according to the embodiment.
  • FIG. 14 is a perspective view of the upper bus bar unit according to the first modification.
  • 15 (a) and 15 (b) are a perspective view and a plan sectional view of the first double-sided holder according to the second modification, respectively.
  • the upward device group 100A corresponds to the "first device group” and the "third device group” described in the claims
  • the downward device group 100B corresponds to the "first device group” and the "third device group” described in the claims.
  • the first single-sided holder 210A corresponds to the "first holder” described in the claims
  • the second single-sided holder 210B corresponds to the "third holder” described in the claims.
  • the first double-sided holder 220 corresponds to the "second holder” and the "fourth holder” described in the claims
  • the second double-sided holder 230 becomes the "first holder" and the "third holder”.
  • first through holes 213, 225, 235 and the second through holes 214, 226, 236 correspond to the "through holes” described in the claims.
  • the upper bus bar 410 corresponds to the "bus bar” and the “second bus bar” described in the claims
  • the lower bus bar 510 corresponds to the "bus bar” and the “first bus bar” described in the claims.
  • the opening 412a corresponds to the "first opening” described in the claims
  • the opening 441 corresponds to the "second opening” described in the claims.
  • FIG. 1 is a perspective view of the power storage module 1.
  • FIG. 2 is a perspective view of the core unit 10.
  • the upper bus bar unit 20 is drawn so that the portions covered by the exterior body 440 of the upper bus bar 410, the positive electrode output bus bar 420, and the negative electrode output bus bar 430 can be seen.
  • the power storage module 1 includes a core unit 10, an upper bus bar unit 20, a lower bus bar unit 30, a positive electrode external output terminal 40, a negative electrode external output terminal 50, and a circuit board 60.
  • the core unit 10 includes a plurality of (112) power storage devices 100 held by the holder unit 200.
  • the upper bus bar unit 20 and the lower bus bar unit 30 are mounted on the upper surface and the lower surface of the core unit 10, respectively, and include a plurality of upper bus bars 410 and a lower bus bar 510 that electrically connect a plurality of power storage devices 100.
  • the positive electrode external output terminal 40 is attached to the right end of the upper surface of the core unit 10 and is electrically connected to the positive electrode output bus bar 420 of the upper bus bar unit 20.
  • the negative electrode external output terminal 50 is attached to the left end portion of the upper surface of the core unit 10 and is electrically connected to the negative electrode output bus bar 430 of the upper bus bar unit 20.
  • the electric power of the plurality of power storage devices 100 is supplied to the outside of the power storage module 1 through the positive electrode external output terminal 40 and the negative electrode external output terminal 50.
  • the circuit board 60 is mounted on the front side surface of the core unit 10.
  • a plurality of upper bus bars 410 and lower bus bars 510 are electrically connected to the circuit board 60.
  • FIG. 3 is an exploded perspective view of the core unit 10.
  • FIG. 4 is an exploded perspective view of the power storage device block 70.
  • the core unit 10 includes a power storage device block 70 in which a plurality of power storage devices 100 are held by the holder unit 200, and a binding frame 80 surrounding the power storage device block 70.
  • the power storage device block 70 is provided with 112 power storage devices 100. That is, in the power storage device block 70, seven sets of upward device groups 100A and seven sets of downward device groups 100B are alternately arranged in the left-right direction.
  • the upward device group 100A is configured by arranging eight power storage devices 100 in the front-rear direction so that their end faces having the positive electrode terminals 110 face upward.
  • the downward device group 100B is configured by arranging eight power storage devices 100 in the front-rear direction so that their end faces having the positive electrode terminals 110 face downward.
  • 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 is formed in a cylindrical shape (cylindrical shape), has a positive electrode terminal 110 on one end face, and has a negative electrode terminal 120 on the other end face.
  • the electric power stored in the power storage device 100 is drawn out through the positive electrode terminal 110 and the negative electrode terminal 120.
  • a hole (not shown) connected to the inside of the power storage device 100 is formed in the positive electrode terminal 110, that is, one end face, 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.
  • the holder unit 200 includes a first single-sided holder 210A, a second single-sided holder 210B, seven first double-sided holders 220, and six second double-sided holders 230 connected in the left-right direction.
  • the first single-sided holder 210A, the second single-sided holder 210B, the first double-sided holder 220, and the second double-sided holder 230 are formed of a resin material such as polybutylene terephthalate (PBT) or polyphenylene sulfide (PPS).
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • the first single-sided holder 210A is arranged at the right end of the holder unit 200
  • the second single-sided holder 210B is arranged at the left end of the holder unit 200.
  • the first double-sided holder 220 and the second double-sided holder 230 are alternately arranged in the left-right direction.
  • FIG. 5A is a perspective view of the first single-sided holder 210A viewed from the front right
  • FIG. 5B is a perspective view of the first single-sided holder 210A viewed from the rear left.
  • the first single-sided holder 210A has a substantially rectangular parallelepiped shape that is long in the front-rear direction and thin in the left-right direction.
  • eight accommodating portions 211 for accommodating and holding each power storage device 100 of the upward device group 100A are provided so as to be continuous in the front-rear direction.
  • Each accommodating portion 211 is a recess recessed in a semi-cylindrical shape, and the upper end surface and the lower end surface thereof are opened by leaving a semicircular rib 212 at the edge portion.
  • the eight accommodating portions 211 are slightly displaced rearward.
  • Each accommodating portion 211 is formed with a first through hole 213 penetrating in the left-right direction at the central portion in the front-rear direction of the upper part and the lower part. Further, in the first single-sided holder 210A, the position between the two adjacent accommodating portions 211, that is, the position of the wall portion partitioning the two recesses, and the same height position as the upper and lower first through holes 213. A second through hole 214 penetrating in the left-right direction is formed. As a result, on the right side surface of the first single-sided holder 210A, eight first through holes 213 and eight second through holes 214 are alternately arranged in the upper part and the lower part, respectively.
  • positioning protrusions 215 are formed on the front lower end portion and the rear lower end portion, and positioning holes 216 are formed on the front upper end portion and the rear upper end portion.
  • a rectangular fitting recess 217 elongated in the front-rear direction is formed between the rows of the first through holes 213 and the second through holes 214. Further, on the right side surface of the first single-sided holder 210A, two upper and lower mounting holes 218 are formed at the front end portion and the rear end portion.
  • Positioning protrusions 219 are formed on the upper surface of the first single-sided holder 210A at the front and rear portions. Further, metal nuts 240 are embedded in six places on the upper surface of the first single-sided holder 210A. The six nuts 240 are also provided on the lower surface of the first single-sided holder 210A.
  • the second single-sided holder 210B has the same configuration as the first single-sided holder 210A, and the first single-sided holder 210A is arranged upside down in front, back, left, and right. Therefore, FIGS. 5A and 5B are perspective views of the second single-sided holder 210B as viewed from the left rear and the right front, respectively.
  • the eight accommodating portions 211 are for accommodating and holding each power storage device 100 of the downward device group 100B.
  • the protrusion 215 at the front end is not used for positioning, so it is cut off before being connected to the first double-sided holder 220.
  • the protrusion 215 at the rear end is not used for positioning, and is therefore cut off before being connected to the second double-sided holder 230.
  • FIG. 6A is a perspective view of the first double-sided holder 220 seen from the front right
  • FIG. 6B is a perspective view of the first double-sided holder 220 seen from the rear left.
  • the first double-sided holder 220 has a substantially rectangular parallelepiped shape that is long in the front-rear direction and thin in the left-right direction.
  • eight first accommodating portions 221 for accommodating and holding each power storage device 100 of the upward device group 100A are provided so as to be continuous in the front-rear direction.
  • eight second accommodating portions 222 for accommodating and holding each power storage device 100 of the downward device group 100B are provided so as to be continuous in the front-rear direction.
  • Each of the first accommodating portions 221 and each second accommodating portion 222 is a recess recessed in a semi-cylindrical shape, and the upper end surface and the lower end surface thereof are opened by leaving semicircular ribs 223 and 224 at the edge portion.
  • the eight first accommodating portions 221 are slightly displaced forward, and the eight second accommodating portions 222 are slightly displaced rearward.
  • the eight first accommodating portions 221 and the eight second accommodating portions 222 have their own accommodating portions located between the two adjacent accommodating portions.
  • Each first accommodating portion 221 is formed with a first through hole 225 penetrating in the left-right direction at the central portion in the front-rear direction of the upper part and the lower part.
  • the first through hole 225 passes between two adjacent second accommodating portions 222, that is, a wall portion that separates the two recesses, on the left side surface side of the first double-sided holder 220.
  • a second through hole 226 that penetrates in the left-right direction is formed at the same height position as the first through hole 225, which is the central portion in the front-rear direction of the upper part and the lower part.
  • the second through hole 226 passes between two adjacent first accommodating portions 221 on the right side surface side of the first double-sided holder 220, that is, a wall portion that separates the two recesses.
  • positioning protrusions 227 and holes 228 are formed at the rear upper end portion and the rear lower end portion, respectively.
  • a mounting hole 229 is formed in the central portion in the front-rear direction on the upper surface of the first double-sided holder 220.
  • the temperature sensor 250 is inserted and fixed in the mounting hole 229 of the central first double-sided holder 220.
  • the temperature sensor 250 is provided in the holder unit 200.
  • the temperature sensor 250 is connected to the circuit board 60 via a cable (not shown).
  • FIG. 7 (a) is a perspective view of the second double-sided holder 230 seen from the front right
  • FIG. 7 (b) is a perspective view of the second double-sided holder 230 seen from the rear left.
  • the second double-sided holder 230 has a mirrored shape with the first double-sided holder 220, and eight first accommodating portions 231 are provided on the left side surface thereof, and eight second accommodating portions 232 are provided on the right side surface thereof. ..
  • the upper end surface and the lower end surface of each first accommodating portion 231 and each second accommodating portion 232 are opened with ribs 233 and 234 left at the edges.
  • First through holes 235 are formed in the upper part and the lower part of each first accommodating portion 231, and second through holes 236 are formed in the upper part and the lower part of each of the second accommodating portions 232.
  • positioning protrusions 237 and holes 238 are formed at the rear lower end portion and the rear upper end portion, respectively.
  • the upward device group 100A located at the right end is sandwiched and held between the first single-sided holder 210A and the first double-sided holder 220 at the right end.
  • the first single-sided holder 210A and the first are formed by a snap structure (not shown).
  • the double-sided holder 220 is connected.
  • each power storage device 100 of the upward device group 100A is housed in each accommodating portion 211 of the first single-sided holder 210A, and the other half is accommodated in each first accommodating portion 221 of the first double-sided holder 220.
  • Each power storage device 100 is stopped by the upper and lower ribs 212 and 223 so that it cannot be pulled out from the two holders 210A and 220 in the vertical direction.
  • the downward device group 100B located at the left end is sandwiched and held between the second single-sided holder 210B and the first double-sided holder 220 at the left end.
  • the second single-sided holder 210B and the first are formed by a snap structure (not shown).
  • the double-sided holder 220 is connected.
  • each power storage device 100 of the downward device group 100B is housed in each accommodating portion 211 of the second single-sided holder 210B, and the other half is accommodated in each second accommodating portion 222 of the first double-sided holder 220.
  • Each power storage device 100 is stopped by the upper and lower ribs 212 and 224 so that it cannot be pulled out from the two holders 210B and 220 in the vertical direction.
  • the other six upward device groups 100A and the five downward device groups 100B are sandwiched and held between the first double-sided holder 220 and the second double-sided holder 230.
  • the first double-sided holder 220 and the second are provided by a snap structure (not shown).
  • the double-sided holder 230 is connected.
  • each power storage device 100 of the upward device group 100A is housed in each first storage part 221 of the first double-sided holder 220, and the other half is housed in each first storage part 231 of the second double-sided holder 230. ..
  • Each power storage device 100 is stopped by the upper and lower ribs 223 and 233 so that it cannot be pulled out from the two holders 220 and 230 in the vertical direction.
  • half of the peripheral surface of each power storage device 100 of the downward device group 100B is housed in each second storage part 222 of the first double-sided holder 220, and the other half is housed in each second storage part 232 of the second double-sided holder 230. Will be done.
  • Each power storage device 100 is stopped by the upper and lower ribs 224 and 234 so that it cannot be pulled out from the two holders 220 and 230 in the vertical direction.
  • Each power storage device 100 is fixed to the inner surfaces of the corresponding accommodating portions 211, the first accommodating portions 221 and 231 and the second accommodating portions 222 and 232 with an adhesive. Therefore, between the peripheral surface of each power storage device 100 and the inner surfaces of the accommodating portions 211, the first accommodating portions 221 and 231 and the second accommodating portions 222 and 232, the amount of cooling air described later is equal to the thickness of the adhesive. There will be a gap for the air to pass through.
  • a binding frame 80 is attached around the power storage device block 70.
  • the binding frame 80 is composed of a front plate 310, a rear plate 320, a left plate 330, and a right plate 340.
  • the front plate 310 and the rear plate 320 are made of a metal material such as aluminum and have a long rectangular shape in the left-right direction.
  • the left plate 330 and the right plate 340 are made of a metal material such as aluminum and have a long rectangular shape in the front-rear direction.
  • a plurality (7) oval openings 311 are formed in the front plate 310 so as to be arranged in the left-right direction. Further, the front plate 310 is formed with two upper and lower insertion holes 312 on the left and right side surfaces. Further, the front plate 310 is formed with six mounting bosses 313 for the substrate.
  • a plurality (7) oval openings 321 are formed in the rear plate 320 so as to be arranged in the left-right direction. Further, the rear plate 320 is formed with two upper and lower insertion holes 322 on the left and right side surfaces.
  • the left plate 330 is formed with an elongated rectangular opening 331 in the front-rear direction at the upper part and the lower part. Further, the left plate 330 is formed with two upper and lower insertion holes 332 at the front end portion and the rear end portion. Further, the left plate 330 is provided with a fitting portion 333 having a shape corresponding to the fitting recess 217 of the second single-sided holder 210B on the surface facing the left side surface of the power storage device block 70. Further, the left plate 330 is provided with mounting tabs 334 having mounting holes at the lower ends of the front and rear portions.
  • the right plate 340 has the same configuration as the left plate 330, and has two openings 341, four insertion holes 342, a fitting portion 343, and two mounting tabs 344.
  • the left plate 330 and the right plate 340 are mounted on the left side surface and the right side surface of the power storage device block 70, respectively.
  • the fitting portion 333 of the left plate 330 is fitted into the fitting recess 217 of the second single-sided holder 210B
  • the fitting portion 343 of the right plate 340 is fitted into the fitting recess 217 of the first single-sided holder 210A.
  • the front plate 310 and the rear plate 320 are mounted on the front side surface and the rear side surface of the power storage device block 70, respectively.
  • the insertion holes 312 and 322 of the front plate 310 and the rear plate 320 overlap the insertion holes 332 and 342 of the left plate 330 and the right plate 340 from the outside.
  • Screws 350 are passed through two overlapping two insertion holes 312, 322, 332, and 342, respectively, and four mounting holes 218 of the first single-sided holder 210A and four mounting holes 218 of the second single-sided holder 210B, respectively. Can be stopped by.
  • the core unit 10 is completed as shown in FIG.
  • the holders 210A, 210B, 220, and 230 of the holder unit 200 are bound by the binding frame 80.
  • the positive electrode terminal 110 and the negative electrode terminal 120 of each power storage device 100 face the outside from the openings 200a of the holder unit 200 formed above and below each power storage device 100.
  • the upper and lower openings 341 of the right plate 340 of the binding frame 80 overlap the upper and lower first through holes 213 and the second through holes 214 of the first single-sided holder 210A, and these first ones.
  • the through hole 213 and the second through hole 214 are opened to the outside (see FIG. 2).
  • the upper and lower openings 331 of the left plate 330 of the binding frame 80 overlap the upper and lower first through holes 213 and the second through holes 214 of the second single-sided holder 210B.
  • the first through hole 213 and the second through hole 214 are open to the outside.
  • FIG. 8A is a perspective view of the upper bus bar unit 20
  • FIG. 8B is a perspective view of the upper bus bar 410, the positive electrode output bus bar 420, and the negative electrode output bus bar 430 in a state where the outer body 440 is not covered.
  • Is. 9 (a) is a perspective view of the lower bus bar unit 30, and FIG. 9 (b) is a perspective view of the lower bus bar 510 in a state where the lower bus bar unit 30 is not covered with the exterior body 520.
  • 10 (a) is a side sectional view of the upper bus bar unit 20, and FIG. 10 (b) is a side sectional view of the lower bus bar unit 30.
  • the upper bus bar unit 20 is drawn so that the portion covered by the exterior body 440 of the upper bus bar 410, the positive electrode output bus bar 420, and the negative electrode output bus bar 430 can be seen for convenience.
  • the lower bus bar unit 30 is drawn so that the portion covered by the exterior body 520 of the lower bus bar 510 can be seen for convenience.
  • the upper bus bar unit 20 includes six upper bus bars 410 arranged in the left-right direction, a positive electrode output bus bar 420 and a negative electrode output bus bar 430 arranged on the right and left sides of the six upper bus bars 410, respectively, and the upper bus bar 410 and the positive output bus bar. Includes 420 and an exterior body 440 that covers the negative electrode output busbar 430.
  • the upper bus bar 410, the positive electrode output bus bar 420, and the negative electrode output bus bar 430 are formed by cutting out a conductive material such as aluminum or copper into a predetermined shape and performing processing such as bending.
  • the exterior body 440 is formed of a non-soft resin material such as PBT and PPS. By insert molding, six upper bus bars 410, a positive electrode output bus bar 420, and a negative electrode output bus bar 430 are embedded inside the exterior body 440.
  • the upper bus bar 410 has 16 terminal portions 411 connected to the positive electrode terminal 110 or the negative electrode terminal 120 of the power storage device 100, a conductive portion 412 connecting between these terminal portions 411, and a substrate connection connected to the circuit board 60. Includes part 413 and.
  • the conductive portion 412 has a predetermined shape and a long plate shape in the front-rear direction.
  • the conductive portion 412 is formed with 16 circular openings 412a arranged so as to be arranged in eight in the front-rear direction and two in the left-right direction.
  • the eight openings 412a in the front-rear direction are arranged at the same spacing as the storage devices 100 of the upward device group 100A and the downward device group 100B. Further, the eight openings 412a in the left column and the eight openings 412a in the right column are displaced from each other according to the positional deviation between the upward device group 100A and the downward device group 100B in the front-rear direction.
  • Each of the 16 terminal portions 411 is formed from the front edge of each opening 412a of the conductive portion 412 and extends rearward.
  • Each terminal portion 411 has a shape that extends rearward, then bends and extends in an oblique downward direction, and further bends and extends rearward. That is, since the tip end portion of each terminal portion 411 is lowered one step from the base end portion, it is easy to contact the positive electrode terminal 110 or the negative electrode terminal 120 of the power storage device 100, and each terminal portion 411 has a spring property in the contact direction. It has been done.
  • the board connection portion 413 is formed from the central portion of the front end of the conductive portion 412 and extends forward.
  • the substrate connection portion 413 has a thin plate shape whose tip side is bent downward.
  • An insertion hole 413a through which the screw 920 is passed is formed at the tip of the board connection portion 413.
  • the positive electrode output bus bar 420 includes eight terminal portions 421 connected to the positive electrode terminals 110 of the power storage device 100, a conductive portion 422 connecting between these terminal portions 421, and a substrate connecting portion 423 connected to the circuit board 60. Includes a terminal connection portion 424 connected to the positive electrode external output terminal 40.
  • the conductive portion 422 has a predetermined shape and a long plate shape in the front-rear direction. Eight circular openings 422a are formed in the conductive portion 422 so as to be arranged in the front-rear direction. The eight openings 422a are arranged at the same intervals as the intervals between the power storage devices 100 of the upward device group 100A.
  • Each of the eight terminal portions 421 is formed from the front edge of each opening 422a of the conductive portion 422 and extends rearward.
  • the configuration of each terminal portion 421 is the same as the configuration of each terminal portion 411 of the upper bus bar 410.
  • the board connecting portion 423 is formed from the left front end of the conductive portion 422 and extends forward.
  • the configuration of the substrate connecting portion 423 is the same as the configuration of the substrate connecting portion 413 of the upper bus bar 410, and an insertion hole 423a is formed at the tip portion thereof.
  • the terminal connection portion 424 is formed so as to project from the conductive portion 422 to the right side, and has a long plate shape in the front-rear direction.
  • Four insertion holes 424a are formed in the terminal connection portion 424 so as to be arranged in the front-rear direction. Further, a positioning hole 424b is formed at the rear end of the terminal connection portion 424.
  • the negative electrode output bus bar 430 includes eight terminal portions 431 connected to the negative electrode terminals 120 of the power storage device 100, a conductive portion 432 connecting between these terminal portions 431, and a substrate connecting portion 433 connected to the circuit board 60. Includes a terminal connection portion 434 connected to the negative electrode external output terminal 50.
  • the conductive portion 432 has a predetermined shape and a long plate shape in the front-rear direction. Eight circular openings 432a are formed in the conductive portion 432 so as to be arranged in the front-rear direction. The eight openings 432a are arranged at the same intervals as the intervals between the power storage devices 100 of the downward device group 100B.
  • Each of the eight terminal portions 431 is formed from the front edge of each opening 432a of the conductive portion 432 and extends rearward.
  • the configuration of each terminal portion 431 is the same as the configuration of each terminal portion 411 of the upper bus bar 410.
  • the board connecting portion 433 is formed from the right front end of the conductive portion 432 and extends forward.
  • the configuration of the substrate connecting portion 433 is the same as the configuration of the substrate connecting portion 413 of the upper bus bar 410, and an insertion hole 433a is formed at the tip portion thereof.
  • the terminal connection portion 434 is formed so as to project from the conductive portion 432 to the left side, and has a long plate shape in the front-rear direction.
  • Four insertion holes 434a are formed in the terminal connection portion 434 so as to be arranged in the front-rear direction.
  • a positioning hole 434b is formed at the front end portion of the terminal connection portion 424.
  • the exterior body 440 covers the portions of the conductive portions 412, 422, and 432 of the bus bars 410, 420, and 430 except for the openings 412a, 422a, and 432a.
  • the exterior body 440 includes a coating layer 440a that covers the upper surface of the conductive portions 412, 422, and 432, and a coating layer 440b that covers the lower surface of the conductive portions 412, 422, and 432.
  • the exterior body 440 that is, the coating layers 440a and 440b, is formed with openings 441 that overlap the openings 412a, 422a, and 432a.
  • the exterior body 440 covers the portions of the board connecting portions 413, 423, and 433 of the bus bars 410, 420, and 430, except for the tip portion. Therefore, in the upper bus bar 410, each terminal portion 411 and the tip portion of the substrate connecting portion 413 are exposed to the outside of the exterior body 440, and in the positive electrode output bus bar 420 and the negative electrode output bus bar 430, the terminal portions 421 and 431 are connected to the substrate. The tip portions of the portions 423 and 433 and the terminal connection portions 424 and 434 are exposed to the outside of the exterior body 440.
  • the exterior body 440 is integrally formed with a positive electrode terminal block 450 and a negative electrode terminal block 460 at the right end and the left end, respectively.
  • Two mounting holes 451 and 461 arranged in the front and rear are formed in the positive electrode terminal block 450 and the negative electrode terminal block 460.
  • Metal nuts (not shown) are installed in the mounting holes 451 and 461.
  • the lower bus bar unit 30 includes seven lower bus bars 510 arranged in the left-right direction and an exterior body 520 covering these lower bus bars 510.
  • the lower bus bar 510 and the outer body 520 are formed of the same material as the upper bus bar 410 and the outer body 440, respectively, and seven lower bus bars 510 are embedded inside the outer body 520 by insert molding.
  • the lower bus bar 510 has a configuration in which the upper bus bar 410 is turned upside down, and includes 16 terminal portions 511, a conductive portion 512 having 16 openings 512a, and a substrate connecting portion 513 having an insertion hole 513a. ..
  • the exterior body 520 covers the portion of the lower bus bar 510 of the conductive portion 512 except for each opening 512a.
  • the exterior body 520 includes a coating layer 520a that covers the upper surface of the conductive portion 512 and a coating layer 520b that covers the lower surface of the conductive portion 512.
  • An opening 521 that overlaps each opening 512a is formed in the exterior body 520, that is, the coating layers 520a and 520b.
  • the exterior body 520 covers a portion of the lower bus bar 510 other than the tip portion of the substrate connection portion 513. Therefore, in the lower bus bar 510, each terminal portion 511 and the tip portion of the substrate connecting portion 513 are exposed to the outside of the exterior body 520.
  • insertion holes 522 and 523 are formed at the right end and the left end of the exterior body 520 so as to be arranged in the front-rear direction, respectively.
  • 11 (a) and 11 (b) are perspective views of the positive electrode external output terminal 40 and the negative electrode external output terminal 50, respectively.
  • the positive electrode external output terminal 40 is formed of a conductive material such as aluminum or copper, and has a rectangular plate-shaped connection terminal portion 610 elongated in the front-rear direction and a rectangle extending from the right end to the right end of the connection terminal portion 610. Includes an output terminal portion 620 having a plate shape of.
  • Four insertion holes 611 are formed in the connection terminal portion 610 so as to be arranged in the front-rear direction.
  • a positioning hole 612 is formed at the rear end portion, and a positioning elongated hole 613 is formed at the front end portion.
  • Two mounting holes 621 arranged in the front-rear direction are formed in the output terminal portion 620.
  • the negative electrode external output terminal 50 has a configuration in which the positive electrode external output terminal 40 is turned upside down in the front-rear and left-right directions, and has a connection terminal portion 710 having four insertion holes 711, a positioning hole 712 and an elongated hole 713, and two. Includes an output terminal portion 720 having a mounting hole 721.
  • FIG. 12 is a perspective view of the circuit board 60.
  • the circuit board 60 is formed by mounting an electronic circuit 820 on a printed circuit board 810 having a square shape.
  • the electronic circuit 820 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 electronic circuit 820 also includes a temperature detection circuit connected to the temperature sensor 250.
  • the circuit board 60 is a printed circuit board for connection with the board connection portions 413, 423, 433 of each bus bar 410, 420, 420 of the upper bus bar unit 20 and the board connection portion 513 of the lower bus bar 510 of the lower bus bar unit 30.
  • Each input terminal 830 is formed with a mounting hole 831 to which the screw 920 is fastened.
  • the printed circuit board 810 is formed with insertion holes 811 at the four corners and at the center of the upper end and the lower end, respectively, through which the mounting screws 910 are passed.
  • the circuit board 60 is first attached to the core unit 10, that is, the six mounting bosses 313 on the front side surface of the binding frame 80 by the six screws 910. As a result, the circuit board 60 is arranged so that its substrate surface faces the front side surface of the holder unit 200 (the surface along the direction in which the upper bus bar 410 and the lower bus bar 510 are arranged).
  • the upper bus bar unit 20 is mounted on the upper surface of the core unit 10.
  • the hole 424b of the positive electrode output bus bar 420 fits into the protrusion 219 of the first single-sided holder 210A
  • the hole 434b of the negative electrode output bus bar 430 fits into the protrusion 219 of the second single-sided holder 210B, so that the upper bus bar unit 20 can be positioned. Be done.
  • the terminal portions 411, 421, and 431 of the bus bars 410, 420, and 430 come into contact with the positive electrode terminal 110 or the negative electrode terminal 120 of the corresponding power storage device 100 through the openings 200a of the holder unit 200.
  • the positive electrode external output terminal 40 and the negative electrode external output terminal 50 are placed on the right end portion and the left end portion of the upper bus bar unit 20, respectively.
  • the connection terminal portion 610 contacts the terminal connection portion 424 of the positive electrode output bus bar 420, and the output terminal portion 620 is arranged on the positive electrode terminal block 450.
  • the connection terminal portion 710 is in contact with the terminal connection portion 434 of the negative electrode output bus bar 430, and the output terminal portion 720 is arranged on the negative electrode terminal block 460.
  • the positive electrode external output terminal 40 is positioned by fitting the hole 612 and the elongated hole 613 of the positive electrode external output terminal 40 into the protrusion 219 of the first single-sided holder 210A.
  • the negative electrode external output terminal 50 is positioned by fitting the hole 712 and the elongated hole 713 of the negative electrode external output terminal 50 into the protrusion 219 of the second single-sided holder 210B.
  • the screw 930 passed through the two insertion holes 611 and 424a is fastened to the nut 240.
  • the four insertion holes 711 of the negative electrode external output terminal 50 and the four insertion holes 434a of the negative electrode output bus bar 430 overlap the four nuts 240 of the second single-sided holder 210B. Screws 930 through the two insertion holes 711 and 434a are fastened to the nut 240.
  • the upper bus bar unit 20, the positive electrode external output terminal 40, and the negative electrode external output terminal 50 are fixed to the upper surface of the core unit 10.
  • the positive electrode output bus bar 420 and the positive electrode external output terminal 40 are electrically connected, and the negative electrode output bus bar 430 and the negative electrode external output terminal 50 are electrically connected.
  • each terminal portion 511 of the lower bus bar 510 contacts the positive electrode terminal 110 or the negative electrode terminal 120 of the corresponding power storage device 100 through each opening 200a of the holder unit 200.
  • the four insertion holes 522 at the right end of the lower bus bar unit 30 overlap the four nuts 240 of the first single-sided holder 210A. A screw (not shown) that has been passed through the insertion hole 522 is fastened to the nut 240. Similarly, the four insertion holes 523 at the left end of the lower bus bar unit 30 overlap the four nuts 240 of the second single-sided holder 210B. A screw (not shown) that has been passed through the insertion hole 522 is fastened to the nut 240. As a result, the lower bus bar unit 30 is fixed to the lower surface of the core unit 10.
  • terminal portions 411, 421, and 431 of the bus bars 410, 420, and 430 of the upper bus bar unit 20 are connected to the positive electrode terminal 110 or the negative electrode terminal 120 of the power storage device 100 corresponding to each by a joining method such as spot welding. Be joined. Further, each terminal portion 511 of the lower bus bar 510 of the lower bus bar unit 30 is joined to the positive electrode terminal 110 or the negative electrode terminal 120 of the corresponding power storage device 100 by a joining method such as spot welding.
  • the six upper bus bars 410 of the upper bus bar unit 20, the positive electrode output bus bar 420, and the substrate connection portions 413, 423, 433 of the negative electrode output bus bar 430 are connected to the input terminals 830 of the circuit board 60 corresponding to them by screws 920. Will be done.
  • the six upper bus bars 410, the positive electrode output bus bar 420, and the negative electrode output bus bar 430 of the upper bus bar unit 20 are electrically connected to the circuit board 60.
  • the board connection portions 513 of the seven lower bus bars 510 of the lower bus bar unit 30 are connected to the input terminals 830 of the circuit board 60 corresponding to them by screws 920.
  • the seven lower bus bars 510 of the lower bus bar unit 30 are electrically connected to the circuit board 60.
  • the power storage module 1 is completed.
  • the six upper bus bars 410 of the upper bus bar unit 20 correspond to the downward device groups 100A and the six downward device groups 100B, excluding the upward device group 100A at the right end and the downward device group 100B at the left end, respectively.
  • An electrical connection is made between the negative electrode terminal 120 and the positive electrode terminal 110 of the power storage device 100 of the upward device group 100A to the left of the negative electrode terminal 120.
  • the positive electrode output bus bar 420 of the upper bus bar unit 20 electrically connects the positive electrode terminals 110 of the power storage device 100 of the upward device group 100A at the right end to each other, and the positive electrode terminal 110 of the power storage device 100 of the upward device group 100A at the right end. And the positive electrode external output terminal 40 are electrically connected.
  • the negative electrode output bus bar 430 of the upper bus bar unit 20 is electrically connected to the negative electrode terminals 120 of the power storage device 100 of the downward device group 100B at the left end, and the negative electrode terminal 120 of the power storage device 100 of the downward device group 100B at the left end. And the negative electrode external output terminal 50 are electrically connected.
  • the seven lower bus bars 510 of the lower bus bar unit 30 are electrically connected to each other of the negative electrode terminals 120 of the power storage device 100 of the upward device group 100A corresponding to each, and the power storage device 100 of the downward device group 100B adjacent to the left side thereof. Electrically connect the positive electrode terminals 110 to each other, and electrically connect the negative electrode terminal 120 of the power storage device 100 of the upward device group 100A and the positive electrode terminal 110 of the power storage device 100 of the downward device group 100B to the left of the negative terminal 120. ..
  • the power storage module 1 has a configuration in which eight power storage devices 100 are connected in parallel and 14 sets of device groups 100A and 100B consisting of these eight power storage devices 100 are connected in series, and the output voltage based on this configuration. And electric capacity can be obtained.
  • a plurality of power storage modules 1 are housed in a housing as a set to form a power storage unit.
  • a cooling fan is provided in the housing, and cooling air, which is a cooling fluid, is forcibly sent to the power storage module 1.
  • the sent cooling air is in the left-right direction of the power storage module 1, that is, in the direction in which the power storage devices 100 are connected in series, and in the direction in which the holders 210A, 210B, 220, and 230 of the holder unit 200 are lined up. It has a flowing cooling structure. For example, as shown in FIG. 1, the cooling air is supplied to the power storage module 1 so as to flow to the left.
  • FIG. 13 is a plan sectional view of the power storage device block 70. In FIG. 13, for convenience, the central portion of the power storage device block 70 is not shown. Further, in FIG. 13, the flow of cooling air is indicated by arrows for a part of the cooling paths inside the power storage device block 70.
  • each of the second through holes 226 and the first single-sided holder 210A of the first double-sided holder 220 is connected to the second through hole 214.
  • each first through hole 225 of the first double-sided holder 220 and the second double-sided holder 230 to the left of the first through hole 225 are provided.
  • the first through holes 235 of the above are connected, and the second through holes 236 of the second double-sided holder 230 and the second through holes 226 of the first double-sided holder 220 to the left of the second through holes 236 are connected. Further, in the second single-sided holder 210B and the leftmost first double-sided holder 220, each first through hole 225 of the first double-sided holder 220 and each second through hole 214 of the second single-sided holder 210B are connected.
  • Eight second cooling paths CR2 penetrating the seven storage spaces 202 in which 100 are housed in the left-right direction are alternately formed in the front-rear direction.
  • the cooling air flowing into the power storage module 1 enters each of the first through holes 213 and each second through hole 214 of the first single-sided holder 210A.
  • the cooling air that has entered each first cooling path CR1 from each first through hole 213 cools the power storage device 100 in the accommodation space 201 through the seven accommodation spaces 201 as shown by the arrows in FIG. 13, and the second It is discharged to the outside from the second through hole 214 of the single-sided holder 210B.
  • the cooling air that has entered each of the second cooling paths CR2 from each of the second through holes 214 cools the power storage device 100 in the accommodation space 202 through the seven accommodation spaces 202 as shown by the arrows in FIG. It is discharged to the outside from the first through hole 213 of the second single-sided holder 210B.
  • each power storage device 100 of the upward device group 100A and each power storage device 100 of the downward device group 100B are individually cooled by the cooling air flowing through the first cooling path CR1 and the second cooling path CR2, respectively. Will be done.
  • the accommodation space 201 of the adjacent first cooling path CR1 and the accommodation space 202 of the adjacent second cooling path CR2 are closely spaced in the front-rear direction, the accommodation space of the first cooling path CR1 is small.
  • the cooling air flowing through the respective cooling paths CR1 and CR2 may be slightly mixed in these communicating portions.
  • the communication portion is eliminated, and the first cooling path CR1 and the second cooling path CR2 are completely separated. It may be in a state.
  • the power storage module 1 has a plurality of power storage devices 100 having a positive electrode terminal 110 at one end and a negative electrode terminal 120 at the other end, a holder unit 200 holding a plurality of (112) power storage devices 100, and a plurality of power storage devices 100.
  • the bus bars 410 and 510 are electrically connected to each other.
  • the plurality of power storage devices 100 include an upward device group 100A in which one end is arranged facing upward, and the holder unit 200 includes a first single-sided holder 210A (second double-sided holder 230) and a first double-sided holder. Includes 220 and. Then, the upward device group 100A is sandwiched and held between the first single-sided holder 210A (second double-sided holder 230) and the first double-sided holder 220.
  • each power storage device 100 of the upward device group 100A is firmly held on both sides of its side surface (peripheral surface) by the first single-sided holder 210A (second double-sided holder 230) and the first double-sided holder 220. .. This improves the seismic resistance of the power storage module 1.
  • the bus bars 410 and 510 include a plurality of terminal parts 411 and 511 connected to each of the plurality of power storage devices 100 and conductive parts 412 and 512 connecting between the plurality of terminal parts 411 and 511. , And both surfaces of the conductive portions 412 and 512 are covered with exterior bodies 440 and 520, that is, coating layers 440a, 440b, 520a and 520b.
  • the plate-shaped bus bars 410 and 510 are reinforced by the coating layers 440a, 440b, 520a, and 520b, so that the bus bars 410 and 510 are distorted, deformed, or the like when vibration or the like occurs in the power storage module 1. Can be suppressed.
  • the plurality of power storage devices 100 include a downward device group 100B in which one end is arranged facing downward, and the holder unit 200 includes a second double-sided holder 230 (second single-sided holder 210B). Including. Then, the downward device group 100B is sandwiched and held between the first double-sided holder 220 and the second double-sided holder 230 (second single-sided holder 210B).
  • each power storage device 100 of the upward device group 100A is firmly held on both sides of its side surface (peripheral surface) by the first single-sided holder 210A (second double-sided holder 230) and the first double-sided holder 220.
  • Each power storage device 100 of the downward device group 100B is firmly held on both sides of its side surface (peripheral surface) by the first double-sided holder 220 and the second double-sided holder 230 (second single-sided holder 210B).
  • This improves the seismic resistance of the power storage module 1.
  • the first double-sided holder 220 is used for holding both the upward device group 100A and the downward device group 100B, the number of holders constituting the holder unit 200 can be reduced.
  • the first single-sided holder 210A, the first double-sided holder 220), the second double-sided holder 230, and the second single-sided holder 210B are passed through the cooling air to bring the cooling air into contact with the plurality of power storage devices 100.
  • Through holes 213, 214, 225, 226, 235, and 236 are provided.
  • the power storage device 100 can be cooled by the cooling air, and the temperature rise of the plurality of power storage devices 100 can be suppressed.
  • the first double-sided holder 220 and the second double-sided holder 230 are housed on one side surface in which a plurality of (8) power storage devices 100 in the upward device group 100A are arranged and accommodated in one direction.
  • a plurality of (8) first accommodating portions 221 and 231 are provided, and each of the plurality (8) power storage devices 100 in the downward device group 100B is arranged in one direction on the other side surface facing one side surface. It has a plurality (8 pieces) of second accommodating portions 222 and 232.
  • the plurality of second accommodating portions 222 and 232 are provided so that one of the plurality of second accommodating portions 222 and 232 is located between the two adjacent accommodating portions of the plurality of first accommodating portions 221, 231. Be done.
  • the through holes are formed in the first accommodating portions 221, 231 and formed in the first accommodating portions 225 and 235 and the second accommodating portions 222 and 232 passing between the two adjacent second accommodating portions 222 and 232.
  • the plurality of first accommodating portions 221 and 231 and the plurality of second accommodating portions 222 are arranged in a staggered manner so that the holder unit 200 is arranged in the arrangement direction of the respective holders 210A, 210B, 220, 230.
  • the power storage device 100 housed and held in the first storage units 221 and 231 and the power storage device 100 housed and held in the second storage units 222 and 232 are provided in the first through holes 225 and 235, respectively. Since it can be cooled by the cooling air passing through the second through hole 226 and 236 and the cold air passing through the second through holes 226 and 236, the cooling efficiency of the plurality of power storage devices 100 can be improved.
  • the plurality of power storage devices 100 in the upward device group 100A are connected in parallel by the bus bars 410 and 510
  • the plurality of power storage devices 100 in the downward device group 100B are connected in parallel by the bus bars 410 and 510.
  • the upward device group 100A and the downward device group 100B are connected in series by the bus bars 410 and 510.
  • the cooling air flows in the direction from the upward device group 100A to the downward device group 100B through the through holes 225, 226, 235, and 236.
  • cooling air flows in the holder unit 200 so as to be orthogonal to the direction in which the storage devices 100 connected in parallel by the bus bars 410 and 510 are arranged, so that the cooling contacts the storage devices 100 connected in parallel. Air has a similar temperature. Therefore, each power storage device 100 connected in parallel can be uniformly cooled.
  • the plurality of power storage devices 100 include another upward device group 100A in which one end is arranged upward, and the holder unit 200 includes another first double-sided holder 220.
  • the other upward device group 100A is sandwiched and held between the second double-sided holder 230 and the other first double-sided holder 220.
  • the bus bar connects the negative electrode terminals 120 of the upward device group 100A, the positive electrode terminals 110 of the downward device group 100B, and the negative electrode terminals 120 of the upward device group 100A and the positive electrode terminals 110 of the downward device group 100B.
  • the lower bus bar 510 to be connected, the negative electrode terminals 120 of the downward device group 100B, the positive electrode terminals 110 of the other upward device group 100A, and the negative electrode terminals 120 of the downward device group 100B and another upward device group 100A.
  • the upper bus bar 410 for connecting to the positive electrode terminal 110 is included.
  • each power storage device 100 of the upward device group 100A is firmly held on both sides of its side surface (peripheral surface) by the first single-sided holder 210A (second double-sided holder 230) and the first double-sided holder 220.
  • Each power storage device 100 of the downward device group 100B is firmly held on both sides of its side surface (peripheral surface) by the first double-sided holder 220 and the second double-sided holder 230
  • each power storage device 100 of the other upward device group 100A is Both sides of the side surface (peripheral surface) are firmly held by the second double-sided holder 230 and the other first double-sided holder 220. This improves the seismic resistance of the power storage module 1.
  • the first double-sided holder 220 is used to hold both the upward device group 100A and the downward device group 100B
  • the second double-sided holder 230 is used to hold both the downward device group 100B and the other upward device group 100A. Since it is used, the number of holders constituting the holder unit 200 can be reduced.
  • the upper bus bar 410 and the lower bus bar 510 can connect each storage device 100 of the upward device group 100A, the downward device group 100B, and another upward device group 100A in parallel, and the upward device group 100A and the downward device group 100B can be connected.
  • One upward device group 100A can be connected in series.
  • the power storage module 1 is provided with a circuit board 60 to which the lower bus bar 510 and the upper bus bar 410 are connected.
  • the circuit board 60 is arranged so that its substrate surface faces the surface (front side surface) of the holder unit 200 along the direction (vertical direction) in which the lower bus bar 510 and the upper bus bar 410 are arranged.
  • the lower bus bar 510 and the upper bus bar 410 can be connected to the circuit board 60 by a short route from both sides in the direction in which the lower bus bar 510 and the upper bus bar 410 are lined up. Further, it is possible to prevent the size of the power storage module 1 from increasing in the direction in which the holder unit 200 and the circuit board 60 are lined up, and it is possible to reduce the size of the power storage module 1.
  • the holder unit 200 is provided with a temperature sensor 250.
  • the temperature sensor 250 can detect abnormal overheating of a plurality of power storage devices 100.
  • FIG. 14 is a perspective view of the upper bus bar unit 20 according to the first modification.
  • annular wall portion 442 surrounding the periphery of each opening 441 is formed on the upper surface of the exterior body 440, that is, the surface of the upper covering layer 440a.
  • the internal electrolytic solution may scatter from the end face.
  • the scattered electrolytic solution hits the wall portion 442 formed in each opening 441, so that it is difficult to leak to the periphery of the opening 441. Further, even if the scattered electrolytic solution leaks around the opening 441 and falls on the upper surface of the exterior body 440, the electrolytic solution is blocked by the wall portion 442 of the surrounding opening 441, so that the electrolytic solution enters the opening 441. The invasion of the electrolytic solution is prevented.
  • the lower bus bar unit 30 may also be provided with an annular wall portion that surrounds the periphery of each opening 521, similarly to the upper bus bar unit 20. In this way, even if the lower end surface of the power storage device 100 is damaged and the electrolytic solution is scattered, the electrolytic solution hits the wall formed in each opening 521 and spreads around the opening 521. It becomes difficult.
  • 15 (a) and 15 (b) are a perspective view and a plan sectional view of the first double-sided holder 220 according to the second modification, respectively.
  • groove portions 221a extending in the front-rear direction in which the first accommodating portions 221 are lined up are formed on the upper and lower portions of the inner surface of each first accommodating portion 221. These groove portions 221a are formed at the position of the first through hole 225 with the same width as the width of the first through hole 225 in the vertical direction, and the groove portions are connected to each other in the front-rear direction. Further, a front groove portion 221b and a rear groove portion 221c connected to the groove portion 221a are formed at the front end portion and the rear end portion of the right side surface of the first double-sided holder 220, respectively.
  • groove portions 222a extending in the front-rear direction in which the second accommodating portions 222 are lined up are formed on the upper and lower portions of the inner surface of each of the second accommodating portions 222. These groove portions 222a are formed at the position of the second through hole 226 with the same width as the width of the second through hole 226 in the vertical direction, and the groove portions are connected to each other in the front-rear direction. Further, a front groove portion 222b and a rear groove portion 222c connected to the groove portion 222a are formed at the front end portion and the rear end portion of the left side surface of the first double-sided holder 220, respectively.
  • the second double-sided holder 230 also has the same groove portion, front groove portion and front groove portion as the first double-sided holder 220 on the left side surface and the right side surface on which the first accommodating portion 231 and the second accommodating portion 232 are formed.
  • a rear groove is formed.
  • the first single-sided holder 210A and the second single-sided holder 210B are also formed with a groove portion, a front groove portion, and a rear groove portion similar to the first double-sided holder 220 on the surface on which the accommodating portion 211 is formed.
  • the upward device group 100A and the downward device group 100B are composed of eight power storage devices 100.
  • the number of power storage devices 100 constituting the upward device group 100A and the downward device group 100B is not limited to the above, and may be any number as long as there are a plurality of them.
  • the power storage device block 70 includes 7 sets of upward device group 100A and 7 sets of downward device group 100B.
  • the number of the upward device group 100A and the downward device group 100B is not limited to the above number, and may be any number.
  • the number of the first double-sided holder 220 and the second double-sided holder 230 of the holder unit 200, and the number of the upper bus bar 410 and the lower bus bar 510 are changed according to, for example, the number of the upward device group 100A and the downward device group 100B.
  • the holder unit 200 includes a first single-sided holder 210A, two first double-sided holders 220, and the like. It includes one second double-sided holder 230 and a second single-sided holder 210B.
  • the upper bus bar unit 20 includes one upper bus bar 410, a positive electrode output bus bar 420, and a negative electrode output bus bar 430
  • the lower bus bar unit 30 includes two lower bus bars 510.
  • the holder unit 200 includes the first single-sided holder 210A, one first double-sided holder 220, and the like. Includes the second single-sided holder 210B and does not include the second double-sided holder 230.
  • the upper bus bar unit 20 includes a positive electrode output bus bar 420 and a negative electrode output bus bar 430, does not include the upper bus bar 410
  • the lower bus bar unit 30 includes one lower bus bar 510.
  • each holder 210A, 210B, 220, 230 may be formed with one or three or more first through holes 213, 225, 235 and second through holes 214, 226, 236 in the vertical direction. ..
  • both the upper and lower surfaces of the conductive portions 412 and 512 of the upper bus bar 410 and the lower bus bar 510 are coated layers 440a, 440b, 520a, 520b.
  • a configuration may be adopted in which the surface of any one of the conductive portions 412 and 512 is not covered by the coating layers 440a, 440b, 520a, and 520b.
  • a configuration may be adopted in which both the upper and lower surfaces of the conductive portions 412 and 512 or a part of one of the surfaces is covered with the coating layers 440a, 440b, 520a and 520b.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention porte sur un module de stockage d'énergie comprenant : une pluralité de dispositifs de stockage d'énergie 100 ayant chacun une borne d'électrode positive 110 à une extrémité et une borne d'électrode négative 120 à l'autre extrémité ; une unité de support 200 qui maintient la pluralité de dispositifs de stockage d'énergie 100 ; et une barre omnibus qui connecte électriquement la pluralité de dispositifs de stockage d'énergie 100. La pluralité de dispositifs de stockage d'énergie 100 comprend un groupe de dispositifs orientés vers le haut 100A, dont une extrémité est positionnée orientée vers le haut, et l'unité de support 200 comprend un premier support à surface simple 210A et un premier support à surface double 220. Le groupe de dispositifs orientés vers le haut 100A est maintenu en étant pris en sandwich entre le premier support à surface simple 210A et le premier support à surface double 220.
PCT/JP2020/035646 2019-09-27 2020-09-18 Module de stockage d'énergie WO2021060219A1 (fr)

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JP2019-176934 2019-09-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220223980A1 (en) * 2019-05-22 2022-07-14 Sanyo Electric Co., Ltd. Bus bar plate
WO2023176227A1 (fr) * 2022-03-18 2023-09-21 パナソニックエナジー株式会社 Bloc-batterie et son procédé de fabrication
WO2024070212A1 (fr) * 2022-09-26 2024-04-04 パナソニックエナジー株式会社 Dispositif électrique et son procédé de fabrication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001155789A (ja) * 1999-11-24 2001-06-08 Shin Kobe Electric Mach Co Ltd 電気自動車用電池
JP2009205979A (ja) * 2008-02-28 2009-09-10 Sanyo Electric Co Ltd 組電池
JP2010282811A (ja) * 2009-06-04 2010-12-16 Sanyo Electric Co Ltd パック電池
JP2013235827A (ja) * 2012-04-13 2013-11-21 Hitachi Vehicle Energy Ltd 電池ブロック及び二次電池モジュール

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4283833B2 (ja) * 2006-09-06 2009-06-24 日立ビークルエナジー株式会社 二次電池モジュール
JP2008311130A (ja) * 2007-06-15 2008-12-25 Hitachi Vehicle Energy Ltd 電源装置及びその冷却方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001155789A (ja) * 1999-11-24 2001-06-08 Shin Kobe Electric Mach Co Ltd 電気自動車用電池
JP2009205979A (ja) * 2008-02-28 2009-09-10 Sanyo Electric Co Ltd 組電池
JP2010282811A (ja) * 2009-06-04 2010-12-16 Sanyo Electric Co Ltd パック電池
JP2013235827A (ja) * 2012-04-13 2013-11-21 Hitachi Vehicle Energy Ltd 電池ブロック及び二次電池モジュール

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220223980A1 (en) * 2019-05-22 2022-07-14 Sanyo Electric Co., Ltd. Bus bar plate
WO2023176227A1 (fr) * 2022-03-18 2023-09-21 パナソニックエナジー株式会社 Bloc-batterie et son procédé de fabrication
WO2024070212A1 (fr) * 2022-09-26 2024-04-04 パナソニックエナジー株式会社 Dispositif électrique et son procédé de fabrication

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