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Busbar for assembled battery and assembled battery

A technology for battery packs and bus bars, which can be applied to battery pack components, small-sized batteries/battery packs, battery boxes/jackets, etc., and can solve problems such as poor welding and jointing.

Inactive Publication Date: 2015-05-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when connecting a plate-shaped connection bus bar and electrode terminals of a plurality of secondary batteries, due to variations in the height of the electrode terminals and errors in the shape of the connection bus bar, etc. If there is a gap between them, there is a possibility that the gap may cause poor welding joints.

Method used

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  • Busbar for assembled battery and assembled battery
  • Busbar for assembled battery and assembled battery
  • Busbar for assembled battery and assembled battery

Examples

Experimental program
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Embodiment Construction

[0022] A battery pack according to an embodiment will be described below with reference to the drawings.

[0023] Such as figure 1 As shown, the battery pack 10 of this embodiment includes: a housing 11 made of resin or the like; and a plurality of secondary batteries 12 accommodated inside the housing 11 .

[0024] Each battery of a plurality of secondary batteries 12 is, for example, a non-aqueous electrolyte secondary battery such as a lithium-ion battery, comprising: a flat substantially square-shaped outer container 21 formed of aluminum or an aluminum alloy; An electrode body (not shown) in the outer container 21 .

[0025] Each secondary battery 12 is interposed between a terminal insulator 24 made of an insulator such as synthetic resin or glass, and has an electrode body connected to the positive electrode at both ends in the longitudinal direction of the terminal surface 25 (for example, the upper end surface in the vertical direction). The positive terminal 22 and...

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PUM

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Abstract

According to one embodiment, a connecting busbar includes a pair of first connecting portions provided on first end portions, a pair of second connecting portions provided on second end portions, and a coupling portion that couples the first end portions and the second end portions. Each of the first connecting portions and the second connecting portions is provided with projecting portions that project toward each of positive electrode terminals and negative electrode terminals, and a connecting opening portion provided on a tip end of the projecting portion. The projecting portion is joined to the positive electrode terminal and the negative electrode terminal by performing welding such as laser welding on a thinned portion in a state that a surface of a curved portion contacts with the positive electrode terminal and the negative electrode terminal while the connecting opening approaches the positive electrode terminal and the negative electrode terminal.

Description

[0001] Associate application [0002] This application enjoys the priority of the basic application based on Japanese Patent Application No. 2013-240307 (filing date: November 20, 2013). This application incorporates the entire content of the basic application by referring to this basic application. technical field [0003] Embodiments of the present invention relate to a bus bar for a battery pack and a battery pack. Background technique [0004] Conventionally, there is known a secondary battery device in which a connecting bus bar connecting electrode terminals of a plurality of secondary batteries is welded to the electrode terminals by laser welding, electron beam welding, resistance welding, or the like. [0005] However, when connecting a plate-shaped connection bus bar and electrode terminals of a plurality of secondary batteries, due to variations in the height of the electrode terminals and errors in the shape of the connection bus bar, etc. If there is a gap bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M50/209H01M50/503H01M50/505H01M50/516H01M50/522H01M50/55
CPCH01R11/288H01M50/103H01M50/505H01M50/503H01M50/522H01M50/516H01M50/55H01M50/209Y02E60/10
Inventor 坂手洋一福田茂夫宫本英则榎本贵志星野光弘
Owner KK TOSHIBA
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