Cover for battery box

A technology of a battery box and a cover body is applied in the field of cover bodies for battery boxes, which can solve the problems of cracking of the safety valve 5 and achieve the effect of reliable cracking.
CN103718332BActive Publication Date: 2016-05-18NISSHIN STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NISSHIN STEEL CO LTD
Publication Date
2016-05-18

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Abstract

In the present invention, in the structure in which the ring-shaped thin-walled part (50) is integrally formed with the cover main body (4) by embossing, it is formed with the cover main body (4) so ​​as to protrude from the cover main body (4). A pair of integral ribs (6, 7) extend along the short dimension direction (4a) of the cover main body (4), and the pair of ribs (6, 7) are arranged along the cover main body (4 ) on both sides of the annular thin-walled portion (50) in the longitudinal direction (4b).
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Description

technical field

[0001] The present invention relates to a battery box cover composed of a metal plate constituting the battery box of a battery, and more particularly to a new improvement in which a pair of The rib, or the annular thin portion provided between the short side of the cover main body and the rib can avoid excessive concentration of stress on a part of the annular thin portion, thereby enabling the safety valve to more reliably rupture. Background technique

[0002] As such a lid body for a battery box conventionally used, for example, the structure shown in patent document 1 etc. can be mentioned. Figure 8 It is an exploded perspective view showing a battery box using a conventional lid. In the figure, the cover 1 constitutes a battery case 3 together with a bottomed cylindrical case body 2 . The lid body 1 and the box main body 2 are made of metal plates such as aluminum, aluminum alloy, nickel-plated steel plate, or stainless steel. A cover main body 4 and...

Claims

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