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WO2018155090A1 - Bloc-batterie et barre omnibus pour bloc-batterie - Google Patents

Bloc-batterie et barre omnibus pour bloc-batterie Download PDF

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Publication number
WO2018155090A1
WO2018155090A1 PCT/JP2018/002838 JP2018002838W WO2018155090A1 WO 2018155090 A1 WO2018155090 A1 WO 2018155090A1 JP 2018002838 W JP2018002838 W JP 2018002838W WO 2018155090 A1 WO2018155090 A1 WO 2018155090A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat
bus bar
pair
battery module
portions
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/002838
Other languages
English (en)
Japanese (ja)
Inventor
和則 小島
堀　浩文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Hitachi Automotive Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Automotive Systems Ltd filed Critical Hitachi Automotive Systems Ltd
Priority to JP2019501161A priority Critical patent/JP6782830B2/ja
Publication of WO2018155090A1 publication Critical patent/WO2018155090A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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 an assembled battery in which a plurality of flat rectangular secondary cells are connected, and a bus bar for the assembled battery.
  • An assembled battery constructed by connecting a plurality of flat rectangular secondary cells is a fixing member (hereinafter referred to as an engineering member or the like) that holds a plurality of single cells and single cells.
  • a fixing member hereinafter referred to as an engineering member or the like
  • Single cell holder and end plate hereinafter referred to as end plate
  • side plate mainly made of a metal rigid body
  • side plate It is maintained as a structure by applying (hereinafter referred to as lashing force).
  • lashing force As shown in Patent Document 1, flat rectangular secondary unit cells use a metal flat plate called a bus bar for electrical connection of the unit cells.
  • Battery packs installed in automobiles, etc. must be repeatedly used for charging and discharging with a large current due to the required performance and necessity. As a result, expansion and contraction of the flat area of the battery cell due to changes in internal cell pressure Is prompted.
  • the bus bar is provided with a bent portion for the purpose of absorbing vibration and shock, and the relaxation is achieved.
  • a metal material mainly using dissimilar metal bonding can be mentioned.
  • the dissimilar metals often use a metal mainly made of aluminum and a metal mainly made of copper. Since the bus bar having the bent portion is stressed when the refracting portion is provided, conventionally, a joint portion of different metals has been provided so as to avoid the bent portion.
  • the means for solving the above problems are, for example, as follows.
  • a bus bar having a plurality of secondary batteries, a pair of flat portions, and a bent portion disposed between one flat portion and the other flat portion of the pair of flat portions, and connecting the plurality of secondary batteries to each other.
  • the bus bar is a clad material in which different metals are bonded to each other, and a bonding portion that is a bonding end portion of the different metals is formed between the one flat portion and the other flat portion.
  • a battery module characterized by being arranged in each.
  • the height can be suppressed (low profile), and a bus bar resistant to stress can be provided.
  • FIG. Perspective view of unit cell 2 The figure which looked at the bus bar of Example 1 from the battery cover direction The figure which looked at the bus bar of Example 1 from the arrangement direction The figure which looked at the bus bar of Example 1 from the width direction The perspective view of the bus bar 9 of the comparative example 1 The figure which looked at the bus bar of the comparative example 1 from the battery cover direction The figure which looked at the bus bar of the comparative example 1 from the arrangement direction The figure which looked at the bus bar of the comparative example 1 from the width direction The figure which looked at the bus bar of Example 2 from the battery cover direction The figure which looked at the bus bar of Example 2 from the arrangement direction The figure which looked at the bus bar of Example 2 from the width direction
  • FIG. 1 is an external perspective view of the assembled battery 1
  • FIG. 2 is a perspective view showing a state in which a part of the assembled battery 1 shown in FIG. 1 is disassembled.
  • the assembled battery 1 includes a plurality of unit cells 2 stacked, a pair of end holders 3 provided at ends of the plurality of unit cells stacked, and a plurality of individual cells interposed between the plurality of unit cells 2.
  • the cell holder 4, the end plate 5 disposed at both ends in the arrangement direction (X direction) of the plurality of unit cells 2 and sandwiched from both sides in the arrangement direction, along the width direction (Y direction) both ends of the plurality of unit cells 2 It has a pair of side plates 6 arranged and extending from one end to the other end in the arrangement direction and fixed to the pair of end plates 5.
  • the end plate 5 and the side plate 6 are fixed by a fixing member 7 such as a rivet.
  • the unit cell 2 has a pair of wide surfaces 201w, a pair of narrow surfaces 201n, a lid 202, and a can bottom 201b.
  • the unit cells 2 are arranged in the arrangement direction with the wide surfaces 201 w facing each other.
  • the lids 202 of the plurality of unit cells 202 are arranged on one side in the height direction (Z direction) of the arranged unit cells 2, and the positive terminal 203 and the negative terminal 204 provided on the lid 202 of the adjacent unit cell 2.
  • the single cells 2 are arranged in such a manner that the positive electrode terminal and the negative electrode terminal are alternately switched in the width direction.
  • the bus bar 9 is divided and provided in a bus bar case 8 provided to face the lid of the unit cell 2.
  • the bus bar case 8 has a hole through which the cell terminal and the bus bar 9 are connected.
  • FIG. 3 is a perspective view of the unit cell 2.
  • the unit cell 2 has a pair of wide surfaces 201w and a pair of narrow surfaces 201n, a lid 202, and a can bottom 201b.
  • the lid 202 is provided with a positive terminal 203 and a negative terminal 204.
  • the positive terminal 203 and the negative terminal 203 have a plane connected to the bus bar 9.
  • the lid 202 may be provided with a gas discharge valve 202b, an electrolyte injection hole 202, and the like.
  • FIG. 4 is a view of the bus bar of the first embodiment as viewed from the battery lid direction
  • FIG. 5 is a view of the bus bar of the first embodiment as viewed from the arrangement direction
  • FIG. 6 is a view of the bus bar of the first embodiment as viewed from the width direction. .
  • the bus bar 9 has a pair of flat portions 912 and 911 connected to the positive electrode terminal and the negative electrode terminal, respectively, and bent portions 910 and 914 provided between the pair of flat portions 912 and 911.
  • the pair of flat portions 912 and 911 includes a pair of rising bent portions 910 that rise from the flat portion 912, a U-shaped bent portion 914 that connects the pair of rising bent portions, and, in some cases, between the U-shaped bent portion 914 and the rising bent portion. It is connected by the middle part provided. It is possible to reduce the height of the bus bar 9 by not having the intermediate part or by making the intermediate part small. When the intermediate portion is not provided, the pair of rising bent portions 910 are directly connected by the U-shaped bent portion 914.
  • the rising bent part 910 may rise up perpendicularly to the surface of the flat part, or may rise up at an angle.
  • the U-shaped bent portion may be bent with a corner other than the U-shape.
  • a clad material obtained by joining different kinds of metals can be used.
  • a metal mainly made of aluminum and a metal mainly made of copper can be used, and each material is bonded with a bonding portion as a boundary. It is preferable that the both ends (joint part) of the joining edge part of dissimilar metals are each arrange
  • the joint portion 916 is linearly provided from the one flat portion 912 toward the other flat portion 911 via the bent portions 914 and 910.
  • the joint is a place where dissimilar metals are joined together, it is less resistant to peeling than other places. Therefore, conventionally, such a joint has been provided at a place other than the bent portion, for example, the intermediate portion 913 so that the stress applied during the manufacturing of the bent portions 914 and 910 is not applied.
  • a joint is provided in the middle.
  • the height of the bus bar 9 is increased because the length of the intermediate portion must be increased.
  • the risk of peeling is reduced as compared with the case where joint portions are provided in the bent portions.
  • the height of the bus bar 9 can be reduced as compared with the case where the joint portion is provided in the intermediate portion.
  • the bus bar 9 is often stressed in the cell arrangement direction. Therefore, it is possible to obtain a structure in which the bonding portion is less likely to be peeled off by providing an angle with respect to the stress than in the case where the bonding portion is provided perpendicular to the arrangement direction.
  • an aluminum plate and a copper plate are brought into contact with each other to be clad, punched so that the joint is oblique to the plate of the bus bar 9 as shown in the figure, and then a bent portion is formed. It is manufactured by letting.
  • the bus bar 9 is connected to the unit cell by welding the flat portion 912 and the positive terminal 203 and welding the flat portion 911 and the negative terminal 912 (welded portion 917).
  • the flat portion 912 and the positive electrode terminal are preferably welded at a position where the dissimilar metals of the bus bar are not mixed in the flat portion, and the connection between the flat portion 911 and the negative electrode terminal is the same.
  • the bus bar 9 has a welded portion welded to the terminal. The welded portion is provided at a position that is flatter than the joint portion 916 and does not overlap the joint portion 916.
  • Comparative Example 1 a comparative example is shown as a comparison with the first embodiment.
  • FIG. 7 is a perspective view of the bus bar 9 of the first comparative example.
  • FIG. 8 is a view of the bus bar of Comparative Example 1 viewed from the battery lid direction
  • FIG. 9 is a view of the bus bar of Comparative Example 1 viewed from the arrangement direction
  • FIG. 10 is a view of the bus bar of Comparative Example 1 viewed from the width direction. .
  • the bus bar 9 is made of a clad material of a metal mainly made of aluminum and a metal mainly made of copper, as in the first embodiment, and is the same as the embodiment except for the position of the joint portion 916.
  • the joint part 916 is provided in the intermediate part 913.
  • the joint portion 916 By providing the joint portion 916 at a place other than the bent portions 910 and 914, it is possible to reduce a risk that the joint portion is peeled off when the bent portions 910 and 914 are formed.
  • the height of the bus bar 9 increases due to the increase in the intermediate portion by providing the joint portion 916 in the intermediate portion 913.
  • the joint portion is provided substantially perpendicular to the stress applied when the battery is used.
  • Example 1 has a higher peel strength because there is an angle with respect to stress than perpendicular.
  • Example 2 11 is a view of the bus bar of Example 2 as viewed from the battery lid direction
  • FIG. 12 is a view of the bus bar of Example 2 as viewed from the arrangement direction
  • FIG. 13 is a view of the bus bar of Example 2 as viewed from the width direction. .
  • the bus bar 9 is made of a clad material of a metal mainly made of aluminum and a metal mainly made of copper, as in the first embodiment, and is the same as the embodiment except for the position of the joint portion 916.
  • the joint portion 916 is disposed on each of the pair of flat portions as in the first embodiment. Therefore, the risk of peeling can be reduced as compared with the case where the joint portion is provided in the bent portion, and the height of the bus bar 9 can be reduced as compared with the case where the joint portion is provided in the intermediate portion.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Dans l'état de la technique, une section dans laquelle des métaux dissemblables sont mutuellement joints est fournie d'une manière qui évite une section de pliage. Cependant, dans de tels cas, un problème est que l'espace pour fournir la section de jonction est requis de telle sorte que le profil de la barre omnibus est difficile. Le module de batterie de l'invention comprend une pluralité de batteries secondaires, et une barre omnibus ayant une paire de sections plates et une section de pliage disposée entre l'une des sections plates et l'autre section plate à partir de la paire de sections plates, pour connecter la pluralité de batteries secondaires les unes aux autres. Le module de batterie est caractérisé en ce que : la barre omnibus est un matériau de revêtement dans lequel les métaux dissemblables ont été joints mutuellement; et, les sections de jonction, qui sont les sections d'extrémité à partir de la jonction mutuelle entre les métaux dissemblables, sont disposées respectivement dans la section plate et l'autre section plate.
PCT/JP2018/002838 2017-02-27 2018-01-30 Bloc-batterie et barre omnibus pour bloc-batterie Ceased WO2018155090A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019501161A JP6782830B2 (ja) 2017-02-27 2018-01-30 電池モジュール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017034275 2017-02-27
JP2017-034275 2017-02-27

Publications (1)

Publication Number Publication Date
WO2018155090A1 true WO2018155090A1 (fr) 2018-08-30

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PCT/JP2018/002838 Ceased WO2018155090A1 (fr) 2017-02-27 2018-01-30 Bloc-batterie et barre omnibus pour bloc-batterie

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JP (1) JP6782830B2 (fr)
WO (1) WO2018155090A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020090492A1 (fr) * 2018-10-31 2020-05-07 ビークルエナジージャパン株式会社 Module de batterie
WO2023085437A1 (fr) 2021-11-15 2023-05-19 ビークルエナジージャパン株式会社 Bloc-batterie

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06140020A (ja) * 1992-10-22 1994-05-20 Yazaki Corp バッテリー接続端子
JPH0992259A (ja) * 1995-07-19 1997-04-04 Yazaki Corp バッテリの電極ポスト接続端子およびその製造方法
JP2002151045A (ja) * 2000-11-10 2002-05-24 Honda Motor Co Ltd 電池モジュール用バスバーおよび電池モジュール
JP2009087761A (ja) * 2007-09-28 2009-04-23 Toshiba Corp バスバー
WO2010087472A1 (fr) * 2009-02-02 2010-08-05 株式会社Ｇｓユアサ Conducteur de connexion de bornes, batterie assemblée et procédé de fabrication d'une batterie assemblée
US20100266889A1 (en) * 2009-04-16 2010-10-21 Yongsam Kim Secondary battery module
JP2012018904A (ja) * 2010-07-06 2012-01-26 Samsung Electro-Mechanics Co Ltd エネルギー貯蔵モジュール
WO2014178114A1 (fr) * 2013-04-30 2014-11-06 日立オートモティブシステムズ株式会社 Barre omnibus de batterie assemblée et batterie assemblée
WO2015087438A1 (fr) * 2013-12-13 2015-06-18 日立オートモティブシステムズ株式会社 Module de cellule secondaire
JP2016046023A (ja) * 2014-08-21 2016-04-04 日産自動車株式会社 組電池
JP2016115601A (ja) * 2014-12-17 2016-06-23 日立オートモティブシステムズ株式会社 蓄電モジュール

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06140020A (ja) * 1992-10-22 1994-05-20 Yazaki Corp バッテリー接続端子
JPH0992259A (ja) * 1995-07-19 1997-04-04 Yazaki Corp バッテリの電極ポスト接続端子およびその製造方法
JP2002151045A (ja) * 2000-11-10 2002-05-24 Honda Motor Co Ltd 電池モジュール用バスバーおよび電池モジュール
JP2009087761A (ja) * 2007-09-28 2009-04-23 Toshiba Corp バスバー
WO2010087472A1 (fr) * 2009-02-02 2010-08-05 株式会社Ｇｓユアサ Conducteur de connexion de bornes, batterie assemblée et procédé de fabrication d'une batterie assemblée
US20100266889A1 (en) * 2009-04-16 2010-10-21 Yongsam Kim Secondary battery module
JP2012018904A (ja) * 2010-07-06 2012-01-26 Samsung Electro-Mechanics Co Ltd エネルギー貯蔵モジュール
WO2014178114A1 (fr) * 2013-04-30 2014-11-06 日立オートモティブシステムズ株式会社 Barre omnibus de batterie assemblée et batterie assemblée
WO2015087438A1 (fr) * 2013-12-13 2015-06-18 日立オートモティブシステムズ株式会社 Module de cellule secondaire
JP2016046023A (ja) * 2014-08-21 2016-04-04 日産自動車株式会社 組電池
JP2016115601A (ja) * 2014-12-17 2016-06-23 日立オートモティブシステムズ株式会社 蓄電モジュール

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020090492A1 (fr) * 2018-10-31 2020-05-07 ビークルエナジージャパン株式会社 Module de batterie
CN112889180A (zh) * 2018-10-31 2021-06-01 日本汽车能源株式会社 电池模块
JP2022159332A (ja) * 2018-10-31 2022-10-17 ビークルエナジージャパン株式会社 電池モジュール
JP7324349B2 (ja) 2018-10-31 2023-08-09 ビークルエナジージャパン株式会社 電池モジュール
CN112889180B (zh) * 2018-10-31 2024-01-23 日本汽车能源株式会社 电池模块
US12021266B2 (en) 2018-10-31 2024-06-25 Vehicle Energy Japan Inc. Battery module
WO2023085437A1 (fr) 2021-11-15 2023-05-19 ビークルエナジージャパン株式会社 Bloc-batterie
EP4435959A4 (fr) * 2021-11-15 2025-04-16 Vehicle Energy Japan Inc. Bloc-batterie

Also Published As

Publication number Publication date
JPWO2018155090A1 (ja) 2019-06-27
JP6782830B2 (ja) 2020-11-11

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