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Electric storage device and insulation bag

A technology of electric storage components and current collectors, which is applied in the direction of electrical components, battery pack components, circuits, etc., and can solve problems such as not being disclosed

Active Publication Date: 2012-11-28
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no disclosure on the structure for conductively bonding the "electrode foil with a plurality of positive and negative protruding laterally" and the current collector (that is, the junction structure of the electrode foil and the current collector)

Method used

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  • Electric storage device and insulation bag
  • Electric storage device and insulation bag
  • Electric storage device and insulation bag

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as Figure 2 to Figure 5 As shown, the nonaqueous electrolyte secondary battery (lithium ion secondary battery) A of Example 1 has an electrode body 1, a pair of current collectors 2 and 3, an electrolytic solution (not shown), and a battery containing them. shell4. The battery case 4 is made of a hard plate made of aluminum alloy or stainless steel alloy or the like. The battery case 4 has a substantially rectangular parallelepiped shape (square shape; box shape) thin in one direction.

[0023] Such as figure 2 as well as image 3 As shown in FIG. 2 , the battery case 4 has a box-like main body portion 4B without a lid and a top plate 4A. The case portion 4B and the top plate 4A may be integrally formed by laser welding or the like. A “positive electrode portion 5 electrically connected to the current collector 2 ” and a “negative electrode portion 6 electrically connected to the current collector 3 ” are provided on the top plate 4A of the battery case 4 . ...

Embodiment 2

[0054] The nonaqueous electrolyte secondary battery A of embodiment 2 is in the structure of the nonaqueous electrolyte secondary battery of embodiment 1, has the insulating bag 27 that is integrally formed with support member 13 (refer to Figure 9 ).

[0055] As mentioned above, the battery case 4 is formed of a conductive material such as aluminum alloy. Therefore, an insulating bag 27 is provided on the secondary battery A in order to insulate the battery case 4 from "the electrode body 1 and the current collectors 2 and 3 which are the built-in contents thereof". The insulating bag 27 is made of an insulating material. The insulating bag 27 is inserted into the battery case 4 in a state where the electrode body 1 and the current collectors 2 and 3 are accommodated.

[0056] In the secondary battery A of Example 2, such an insulating bag 27 is integrally formed with the supporting member 13 (refer to Figure 9 as well as Figure 13 ). Such as Figure 10 11 and 11 , i...

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Abstract

An electric storage device (A) includes: an electrode assembly (1) including a positive electrode sheet (7), a negative electrode sheet (8), and a separator (9) for insulating between the positive electrode sheet (7) and the negative electrode sheet (8); positive and negative current collectors (2 and 3) disposed on both ends of the electrode assembly (1); a case (4) in which the electrode assembly (1) and the current collectors (2 and 3) are housed and that fixes one ends of the positive and negative current collectors (2 and 3); and a support member (13) extending from the positive current collector (2) to the negative current collector (3).

Description

technical field [0001] One embodiment of the present invention relates to an electricity storage element and an insulating bag. Background technique [0002] The power storage element can be used, for example, as a "nonaqueous electrolyte secondary battery such as a lithium ion secondary battery". The electricity storage element has, for example, an electrode body and current collectors provided on both sides thereof. As such an energy storage element, a nonaqueous electrolyte secondary battery disclosed in JP-A-10-106536 is known. the bulletin Figure 4 The disclosed electrode body has "a spirally wound, strip-shaped positive electrode (5) and a strip-shaped negative electrode (6)". A "pair of separators (7) for securing insulation" is disposed between the positive electrode (5) and the negative electrode (6). The electrode body is as described in the gazette Figure 8 As shown in , it is crushed so that "the shape viewed from the axial direction of the scroll (vertical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/18H01M10/0525H01M50/103H01M50/119
CPCY02E60/12H01M2/0237H01M2/0262H01M2/0277Y02E60/10Y02P70/50H01M50/103H01M50/119
Inventor 吉竹伸介岸本知德温田敏之
Owner GS YUASA INT LTD
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