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Storage element

A technology of a power storage device and an external body, which is applied in the directions of exhaust plug devices, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of difficult safety valve opening and welding, etc.

Inactive Publication Date: 2012-08-01
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the structure disclosed in Patent Document 1, only the cutout is formed on the protective film, so there is a possibility that the rising internal pressure cannot be moderated satisfactorily, such as welding of the cut line due to the influence of heat or the like.
[0007] In addition, in the structure disclosed in Patent Document 2, since the rubber valve member is pressed by the safety valve cover, it is difficult to accurately open the safety valve under a preset internal pressure.

Method used

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Embodiment Construction

[0047] Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that in the following descriptions, terms indicating specific directions and positions (for example, terms including "upper", "lower", "side", and "end") are used as required, but these terms are used only for The invention can be easily understood with reference to the accompanying drawings, but these terms are not used to limit the technical scope of the present invention. In addition, the following descriptions are only examples in essence, and are not intended to limit the present invention and its application objects and uses.

[0048] figure 1 A non-aqueous electrolyte secondary battery is shown as an example of a power storage device. Such as figure 2 As shown, this non-aqueous electrolyte secondary battery is configured by accommodating a power generating unit 2 in a battery container 1 and closing it with a lid 3 . Here, an exterior body i...

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Abstract

An external terminal (14) having an exposed surface which is exposed to the outside from a package (1,3), a current collector (13) which is disposed inside of the package and is connected to the external terminal, and an electrode assembly which is disposed inside of the package and is connected to the current collector are provided. The package includes a safe valve (9) and a protection member (44) covering the safe valve. The protection member (44) includes a space portion formed between the protection member and the safe valve, and a communicating portion communicating the space portion and the periphery of the protection member.

Description

technical field [0001] The present invention relates to electric storage devices such as batteries and capacitors. Background technique [0002] Conventionally, there is known a battery as an example of an electrical storage device, which comprises a protective film covering a vent hole formed on a battery sealing plate (cover), and forming a tongue-shaped cutting line on the protective film, thereby enabling The internal pressure of the battery is lowered (for example, refer to Patent Document 1). [0003] In addition, another battery is known in which a safety valve cover is integrated with a rubber valve member that closes a through hole in the cover, and the valve member is elastically deformed to form a gap due to an increase in the internal pressure of the battery, so that the fluid can be released. It flows out to the surrounding through the through hole formed in the safety valve cover. [0004] Patent Document 1: International Publication No. 98 / 56052 [0005] Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/05
CPCY02E60/12H01M2/1241H01M2/1294H01M2/1252H01M2/1229Y02E60/10H01M50/325H01M50/3425H01M50/342H01M50/30H01M50/35H01M50/147
Inventor 白石悠中本武志
Owner GS YUASA INT LTD