Electric storage element, metal part, and method for manufacturing electric storage element
A technology for storage elements and metal parts, which is applied to electrical elements, structural parts, battery pack parts, etc., can solve the problems of decreased mechanical strength of protruding parts, difficult processing of protruding parts, and difficult processing, etc. The effect of shape change
Active Publication Date: 2018-01-02
GS YUASA INT LTD
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Problems solved by technology
[0007] However, in the structure in which the entire protrusion is solid, the mechanical strength of the protrusion itself is strong, and the resistance when an external force acts on the protrusion is high, but the processing for forming the protrusion is not easy.
In addition, when it is desired to further deform the protrusion for assembling with other parts after the protrusion is formed, the processing is not easy.
[0008] In order to facilitate the processing of the protrusion, it is conceivable to form the entire protrusion into a cylindrical shape by press working or the like, but this means that the mechanical strength of the protrusion decreases.
[0009] In addition, when a solid protrusion is formed on a plate-shaped member by plastic deformation, since a part of the thickness of the plate-shaped member is used for forming the protrusion, there is also a possibility that the mechanical strength of the plate-shaped member will decrease.
Method used
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Embodiment Construction
[0069] Hereinafter, embodiments of the present invention will be described based on the drawings.
[0070] In the present embodiment, an electric storage element in which metal fittings having protrusions are used as a part of the housing is mainly shown.
[0071] As an electric storage element, a nonaqueous electrolyte secondary battery (specifically, a lithium ion battery) which is one example of a secondary battery will be described as an example.
[0072] Furthermore, the so-called power storage element is used in a broad concept including a secondary battery or a capacitor, which is an element (device) that can be charged and discharged.
[0073] (Configuration of storage device 100 (nonaqueous electrolyte secondary battery))
[0074] Such as figure 1 as well as figure 2 As shown, the storage device 100 of the present embodiment has a frame body 101 composed of a bottomed cylindrical (more specifically, bottomed rectangular cylindrical) can body 1 and a case that clos...
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Provided is an electric storage element in which a metal part in which a protrusion is formed by plastic working a metal plate-shaped member is used as a part of a frame, and the structural strength of the protrusion and its vicinity is ensured. The electricity storage element (100) uses a metal part (2) having a protrusion (2b) raised from the plate surface of a metal plate-shaped member as a part of the frame (101), and the protrusion (2b) is positioned in the direction of erection. The front end side has a cylindrical cylindrical portion (22) and a solid columnar base portion (21) extending from the plate surface of the metal fitting (2) to the cylindrical portion (22) in the standing direction.
Description
technical field [0001] The present invention relates to an electrical storage element in which a metal part having a protrusion formed thereon, which is processed and formed from a plate surface of a metal plate-shaped member, is used as a part of the frame, the metal part itself, and the plate of the plate-shaped member A method of manufacturing an electrical storage device in which a metal part standing upright is a part of a housing. Background technique [0002] Metal parts having protrusions are used in various applications. For example, as described in Patent Document 1 below, metal fittings and other components are positioned and fixed using protrusions. [0003] When forming a protrusion on a metal plate-shaped member, a solid protrusion as described in Patent Document 1 below is formed. [0004] (Prior art literature) [0005] (patent documents) [0006] Patent Document 1: Japanese Patent Laid-Open No. 2001-340928 [0007] However, in the structure in which the...
Claims
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IPC IPC(8): H01M2/02H01M2/04H01G2/10H01M50/176H01M50/184H01M50/188H01M50/55H01M50/553H01M50/562
CPCH01G11/70H01G11/82H01G2/106Y10T29/49204Y02E60/10H01M50/15Y02P70/50H01M50/562H01M50/184H01M50/55H01M50/553H01M50/176H01M50/188H01G9/008Y02E60/13
Inventor 白石悠伊藤瞬入江诚一
Owner GS YUASA INT LTD