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Electrical storage apparatus

A technology for storage devices and electrodes, which is applied to batteries, circuits, electrical components, etc., and can solve problems such as taking a long time

Active Publication Date: 2015-12-02
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When manufacturing a secondary battery, the electrolyte solution is injected into the casing through the injection hole, and the electrolyte solution is soaked into the active material in the casing, but it takes a long time for the electrolyte solution to soak into the active material.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Below, according to Figure 1 to Figure 7 An embodiment in which the power storage device is embodied as a secondary battery will be described.

[0017] Such as figure 1 , figure 2 as well as Figure 4 As shown in (a), the secondary battery 10 has an electrode assembly 14 as a charging and discharging element, an electrolytic solution 18 as an electrolyte, and a case 11 that accommodates the electrode assembly 14 and the electrolytic solution 18 . The housing 11 has a bottomed rectangular parallelepiped body member 12 and a rectangular plate-shaped cover member 13 , and the cover member 13 and the body member 12 are welded by laser welding. The main body member 12 includes a rectangular bottom plate 12a, short side walls 12b erected from a pair of opposing short side edges of the bottom plate 12a, and long side walls 12c erected from a pair of opposing long side edges of the bottom plate 12a. . The main body member 12 has an insertion opening 12d for inserting th...

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PUM

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Abstract

The present invention is capable of efficiently impregnating an electrolyte into an active substance. This electrical storage apparatus is provided with an electrode assembly having a plurality of first electrodes and a plurality of second electrodes, a case provided with a wall part having an electrolyte injection hole, and an insulation member for insulating between the electrode assembly and the case. The electrode assembly has a facing surface facing the wall part of the case, the first electrodes have first tabs protruding from one side, and the second electrodes have second tabs protruding from one side. The group of first tabs and the group of second tabs each have a first side surface and a second side surface on mutually opposite sides. The group of first tabs and the group of second tabs are separated from each other, and in each of the group of first tabs and the group of second tabs, the first side surface faces the facing surface, and the second side surface is bent into a condition facing the wall part of the case. The insulation member opens the entire facing surfaces of the electrode assembly to open outside the insulation member. The injection hole is disposed in a position sandwiched between regions of the wall part on which the group of first tabs and the group of second tabs are projected when viewing the wall part from a direction orthogonal to the facing surface.

Description

technical field [0001] The present invention relates to an electrical storage device having an electrolyte solution injection hole in a wall portion of a case. Background technique [0002] Vehicles such as EVs (Electric Vehicles) and PHVs (Plugin Hybrid Vehicles) are equipped with secondary batteries as power storage devices that store electric power supplied to running motors. Such as Figure 9 As shown, the secondary battery 80 includes an electrode assembly 83 having a plurality of positive electrodes 81 and a plurality of negative electrodes 82 stacked alternately, and a case 84 for accommodating the electrode assembly 83 . The positive electrode 81 and the negative electrode 82 are insulated from each other. Each of the positive electrode 81 and the negative electrode 82 has a metal foil and active materials arranged on both surfaces of the metal foil. A positive electrode tab 81 a is provided on one side of each positive electrode 81 . A negative electrode tab 82 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M2/14H01M2/26H01M2/36H01M50/103H01M50/119H01M50/176H01M50/474H01M50/477H01M50/54H01M50/55H01M50/553H01M50/627
CPCH01M2/14H01M2/266H01M2/362H01M10/0413Y02E60/10H01M50/54Y02P70/50H01M50/553H01M50/55H01M50/176H01M50/627H01M50/477H01M50/103H01M50/474H01M50/119H01M10/02H01M2220/20
Inventor 南形厚志奥田元章
Owner TOYOTA IND CORP