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Electricity-storage device

A technology for electric storage devices and electric storage components, which is applied in the direction of circuits, conductive connections, electrical components, etc., and can solve problems such as poor welding

Active Publication Date: 2020-06-12
BLUE ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if a welding failure during manufacture or a chip due to use occurs in this part, the bus bar 102 is very likely to be peeled off from the electrode part 104, which becomes a problem.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0039] The power storage device of this embodiment includes:

[0040] a plurality of storage elements having external terminals;

[0041] a bus bar that electrically connects the external terminals of the different energy storage elements to each other;

[0042] The bus bar includes a pair of connecting parts arranged to overlap the external terminals,

[0043] A plurality of curvilinear welded portions are formed on each of the pair of connected portions, and the curved welded portion is convexly bent toward the inner side of the first direction in which the paired connected portions are arranged,

[0044] The plurality of curved welding portions are formed in a row in the first direction.

[0045] In the power storage device configured as described above, when a bending force is applied to the bus bar, a stress corresponding to the bending force tends to be applied to the curved curved weld portion that is convexly curved inward in the first direction. That is, the curved...

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PUM

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Abstract

An electricity-storage device according to the present embodiment is provided with a plurality of electricity-storage elements having external terminals, and a busbar connecting the external terminalsof different electricity-storage elements in a conductive manner. The electricity-storage device is characterized in that the busbar is provided with a pair of connecting portions disposed overlapping the external terminals, each of the pair of connecting portions being formed with a plurality of curved welding portions having a curved shape curving and protruding toward the inside in a first direction in which the pair of connecting portions are arranged, wherein the plurality of curved welding portions are formed so as to be arranged in the first direction.

Description

[0001] Cross-references to related applications [0002] This application claims the priority of Japanese Patent Application No. 2017-205983, and incorporates the contents of Japanese Patent Application No. 2017-205983 into the description of this application by reference. technical field [0003] The present invention relates to a power storage device including a plurality of power storage elements connected to each other by bus bars. Background technique [0004] Currently, it is known that there is a Figure 16 The power supply device 100 shown in which a plurality of battery cells 101 are connected through a bus bar 102 (refer to Patent Document 1 Figure 15 ). [0005] Each battery cell 101 is a square shape whose width is greater than its thickness. In addition, each battery cell 101 is adjacent to other battery cells 101 in a stacked state in the thickness direction. [0006] Furthermore, on the sealing plate 103 that is the upper surface of the battery cell 101 , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01G11/10H01G11/76H01M50/50H01M50/503
CPCH01G11/10H01G11/76Y02E60/10H01M50/209H01M50/505H01M50/503H01M50/50
Inventor 山本雄太
Owner BLUE ENERGY CO LTD