WO2021153436A1 - Barre omnibus - Google Patents

Barre omnibus Download PDF

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Publication number
WO2021153436A1
WO2021153436A1 PCT/JP2021/002164 JP2021002164W WO2021153436A1 WO 2021153436 A1 WO2021153436 A1 WO 2021153436A1 JP 2021002164 W JP2021002164 W JP 2021002164W WO 2021153436 A1 WO2021153436 A1 WO 2021153436A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
inspection range
index unit
connection
index
Prior art date
Application number
PCT/JP2021/002164
Other languages
English (en)
Japanese (ja)
Inventor
善久 山口
Original Assignee
住友電装株式会社
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
Publication date
Application filed by 住友電装株式会社 filed Critical 住友電装株式会社
Publication of WO2021153436A1 publication Critical patent/WO2021153436A1/fr

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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
    • H01M50/50—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
    • 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

  • This disclosure relates to a bus bar.
  • Patent Document 1 describes a bus bar used for a battery wiring module.
  • the bus bar is connected to a connection target such as an electrode terminal of a battery cell by, for example, laser welding.
  • the purpose is to provide a bus bar that can improve the yield.
  • the bus bar of the present disclosure includes a connection portion connected to the connection target and an index portion indicating an inspection range including the connection portion.
  • FIG. 1 is a plan view of the bus bar according to the embodiment.
  • FIG. 2 is a schematic view showing a mode of laser welding between the bus bar and the connection target in the same embodiment.
  • connection unit connected to the connection target and an index unit indicating an inspection range including the connection unit are provided.
  • the inspection range when visually inspecting the presence or absence of scratches or dirt on the bus bar, the inspection range can be easily grasped by the index unit. Therefore, defective products having scratches or stains within the inspection range can be more clearly identified, and as a result, the yield can be improved.
  • the index unit preferably has a linear shape along the outer peripheral edge of the inspection range.
  • the inspection range can be more preferably grasped by the linear index unit.
  • the index portion is formed in a closed loop shape along the outer peripheral edge of the inspection range.
  • the inspection range can be more preferably grasped by the closed loop index unit.
  • the index portion preferably has a groove shape recessed in the surface of the bus bar.
  • the bus bar is less likely to get dirty when the index portion is formed, as compared with the case where the index portion is formed by printing or the like.
  • connection portion is preferably a laser welded portion that is laser welded to the connection target.
  • the bus bar 10 of the present embodiment shown in FIG. 1 is used, for example, in a battery wiring module for a vehicle.
  • the bus bar 10 of the present embodiment is formed by pressing from a metal plate material and has a plate shape.
  • the bus bar 10 includes a plurality of connection portions 12 to which the connection target is to be connected on the first main surface 11 of the bus bar 10.
  • the bus bar 10 of the present embodiment is connected to the battery cell 20 in the battery wiring module (see FIG. 2).
  • the battery cell 20 includes an electrode terminal 21 as a connection target, and the electrode terminal 21 is connected to each connection portion 12 of the bus bar 10 by laser welding.
  • each connecting portion 12 is a laser welding portion that is laser welded to the electrode terminal 21 to be connected.
  • the electrode terminal 21 of this embodiment is composed of, for example, a tab lead of a battery cell 20. Further, at the time of laser welding between the electrode terminal 21 and the bus bar 10, the electrode terminal 21 is brought into contact with the connecting portion 12 of the first main surface 11, and the second main surface 13 on the back side of the first main surface 11 is maintained. The laser beam L is irradiated from the side to the portion corresponding to the connecting portion 12.
  • an index unit 14 indicating an inspection range A in an inspection for visually confirming the presence or absence of scratches or stains is formed on the first main surface 11 of the bus bar 10.
  • the inspection range A is set for each connection portion 12.
  • Each inspection range A is set to a range including the corresponding connection portion 12.
  • the index unit 14 of the present embodiment has a groove shape recessed in the first main surface 11.
  • the index unit 14 is formed during press molding of the bus bar 10.
  • the index unit 14 has a linear shape along the outer peripheral edge of the inspection range A in a plan view. Further, the index unit 14 is formed in a continuous ring shape along the outer peripheral edge of the inspection range A. For example, the index unit 14 has a closed loop shape.
  • the inspection range A is clarified by the index unit 14. Therefore, it is possible to contribute to the improvement of the yield without making the bus bar 10 having scratches or stains outside the inspection range A a defective product.
  • connection portion 12 of the bus bar 10 If the connection portion 12 of the bus bar 10 is scratched, a gap due to the scratch is generated between the bus bar 10 and the electrode terminal 21 during laser welding. Further, even when dirt such as oil is attached to the connecting portion 12 of the bus bar 10, the oil is evaporated during laser welding to form a gap between the bus bar 10 and the electrode terminal 21. If there is a gap between the connection portion 12 of the bus bar 10 and the electrode terminal 21, the desired connection strength may not be obtained at the portion where they are laser welded. Therefore, the bus bar 10 having scratches or stains in the inspection range A is treated as a defective product.
  • the bus bar 10 includes an index unit 14 indicating an inspection range A including a connection unit 12 connected to the electrode terminal 21 of the battery cell 20. According to this configuration, when visually inspecting the presence or absence of scratches or stains on the bus bar 10, the inspection range A can be easily grasped by the index unit 14. Therefore, defective products having scratches or stains within the inspection range A can be more clearly identified, and as a result, the yield of the bus bar 10 can be improved.
  • the linear index unit 14 can more preferably grasp the inspection range A.
  • the index unit 14 is formed in a closed loop shape along the outer peripheral edge of the inspection range A.
  • the inspection range A can be more preferably grasped by the closed loop-shaped index unit 14 as compared with the case where the index unit 14 has an intermittent dotted line shape along the outer peripheral edge of the inspection range A. ..
  • the index unit 14 has a groove shape recessed in the first main surface 11 of the bus bar 10. Therefore, as compared with the case where the index portion 14 is formed by printing or the like, it is more preferable that the bus bar 10 is less likely to be stained when the index portion 14 is formed.
  • connection portion 12 is a laser welded portion connected to the electrode terminal 21 of the battery cell 20 by laser welding. According to this configuration, it is possible to improve the yield in the bus bar 10 that is laser-welded to the connection target.
  • This embodiment can be implemented by changing as follows.
  • the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
  • the configuration of the index unit 14 is not limited to the above embodiment, and may be, for example, a dotted line along the outer peripheral edge of the inspection range A. Further, the index unit 14 is not limited to the groove shape recessed in the first main surface 11, and may be printed on the first main surface 11 with ink or the like.
  • the configuration such as the shape of the bus bar 10 and the number of connecting portions 12 is not limited to the above embodiment, and can be appropriately changed according to the configuration of the battery wiring module and the like.
  • connection between the connecting portion 12 of the bus bar 10 and the electrode terminal 21 is not limited to laser welding, but may be, for example, ultrasonic welding or resistance welding.
  • the second main surface 13 of the bus bar 10 also has a connection portion to which the electrode terminal or pressure detection terminal of the battery cell is connected, an index portion indicating the inspection range including the connection portion of the second main surface 13 is used. It may be provided on the second main surface 13.
  • bus bar 10 is not limited to the battery wiring module for vehicles, and may be used for other devices.
  • connection target connected to the bus bar 10 is not limited to the electrode terminal 21 of the battery cell 20.
  • the index unit 14 may coincide with the entire outer peripheral edge of the inspection range A.
  • the inspection range A of the embodiment may be referred to as an inspection required range, and the surface of the first main surface 11 excluding the inspection range A may be referred to as an inspection unnecessary range.
  • the index unit 14 may be configured to visually indicate the boundary between the inspection range A and the inspection-unnecessary range.
  • the index unit 14 may be configured to visually indicate all angles of each inspection range A.
  • the first main surface 11 of the bus bar 10 of the embodiment may be a flat surface or a smooth surface except for the index unit 14.
  • the first main surface 11 may be flat or smooth.
  • each inspection range A has a larger area than the corresponding connection portion 12.
  • the inspection range A can include the entire corresponding connection portion 12 and a predetermined margin area.
  • the predetermined margin region can be determined in advance according to, for example, the manufacturing tolerance of the bus bar 10, the manufacturing tolerance of the electrode terminal 21, and / or the assembly tolerance of the bus bar 10 and the electrode terminal 21.
  • the inspection range A does not have to include the margin region, and the outer peripheral edge (index unit 14) of the inspection range A may coincide with the outer peripheral edge of the connection portion 12.
  • Bus bar 11 1st main surface 12 Connection part (laser welded part) 13 2nd main surface 14 Indicator 20 Battery cell 21 Electrode terminal (connection target) A Inspection range L Laser light

Landscapes

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

Abstract

La présente invention concerne selon un mode de réalisation une barre omnibus qui permet d'améliorer le rendement. La barre omnibus (10) selon le mode de réalisation de la présente invention comprend : des parties de connexion (12) destinées à être connectées à des objets de connexion tels que des bornes d'électrode de cellules de batterie ; et des parties d'indice (14) indiquant des plages d'inspection contenant les parties de connexion (12). Les parties d'indice (14) peuvent être configurées de telle sorte que les plages d'inspection peuvent être visuellement déterminées lors de l'inspection de la barre omnibus (10) pour rechercher la présence/l'absence de défauts et de taches.
PCT/JP2021/002164 2020-01-29 2021-01-22 Barre omnibus WO2021153436A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020012566A JP2021118154A (ja) 2020-01-29 2020-01-29 バスバー
JP2020-012566 2020-01-29

Publications (1)

Publication Number Publication Date
WO2021153436A1 true WO2021153436A1 (fr) 2021-08-05

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ID=77079758

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/002164 WO2021153436A1 (fr) 2020-01-29 2021-01-22 Barre omnibus

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JP (1) JP2021118154A (fr)
WO (1) WO2021153436A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023074117A (ja) * 2021-11-17 2023-05-29 矢崎総業株式会社 バスバー、バスバーと回路基板との接続構造、および、バスバーと回路基板との接続方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121289A (en) * 1979-03-12 1980-09-18 Sumitomo Electric Industries Method of welding cable conductor
JPH063718U (ja) * 1991-01-30 1994-01-18 ダイハツ工業株式会社 フューエルタンクのパイプ取付け構体
JPH0750353A (ja) * 1993-08-04 1995-02-21 Sony Corp 光学機能素子
JPH07182605A (ja) * 1993-12-22 1995-07-21 Sony Corp 磁気ヘッド装置
JP2012193454A (ja) * 2012-05-25 2012-10-11 Dowa Holdings Co Ltd 銀粉およびその製造方法
WO2018087818A1 (fr) * 2016-11-08 2018-05-17 新日鐵住金株式会社 Appareil et procédé de surveillance de soudage
JP2019003857A (ja) * 2017-06-16 2019-01-10 株式会社オートネットワーク技術研究所 バスバーおよび当該バスバーを備えた接続モジュール

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55121289A (en) * 1979-03-12 1980-09-18 Sumitomo Electric Industries Method of welding cable conductor
JPH063718U (ja) * 1991-01-30 1994-01-18 ダイハツ工業株式会社 フューエルタンクのパイプ取付け構体
JPH0750353A (ja) * 1993-08-04 1995-02-21 Sony Corp 光学機能素子
JPH07182605A (ja) * 1993-12-22 1995-07-21 Sony Corp 磁気ヘッド装置
JP2012193454A (ja) * 2012-05-25 2012-10-11 Dowa Holdings Co Ltd 銀粉およびその製造方法
WO2018087818A1 (fr) * 2016-11-08 2018-05-17 新日鐵住金株式会社 Appareil et procédé de surveillance de soudage
JP2019003857A (ja) * 2017-06-16 2019-01-10 株式会社オートネットワーク技術研究所 バスバーおよび当該バスバーを備えた接続モジュール

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JP2021118154A (ja) 2021-08-10

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