TOP COVER ASSEMBLY AND SECONDARY BATTERY - CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

Title:

TOP COVER ASSEMBLY AND SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2020/057442

Kind Code:

A1

Abstract:

A top cover assembly (30) and a secondary battery (100). The top cover assembly (30) comprises: a top cover sheet (31), provided with electrode lead-out holes (311); electrode terminals (32), covering the electrode lead-out holes (311), the electrode terminals (32) each comprising a body (321), and the side wall of the body (321) being provided with concave portions (322); insulation members (33), the insulation members (33) each being provided with an accommodating cavity (331), and the bodies (321) being accommodated in the accommodating cavities (331); and convex portions (34), connected to the inner wall of each of the isolation members (33), and extending in a direction close to the axis of the electrode lead-out holes (311). The convex portions (34) are accommodated in the concave portions (322) to prevent the bodies (321) from rotating relative to the isolation members (33); and the top cover assembly (30) is able to improve the overcurrent capability and stability of the electrode terminals (32).

Inventors:

ZHAO FENGGANG (CN)
ZENG YUQUN (CN)
GUO JIAN (CN)
LI QUANKUN (CN)
WANG PENG (CN)

Application Number:

PCT/CN2019/105714

Publication Date:

March 26, 2020

Filing Date:

September 12, 2019

Export Citation:

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Assignee:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

International Classes:

H01M50/176; H01M50/249; H01M50/271; H01M50/55; H01M50/552; H01M50/553; H01M50/588; H01M50/593

Foreign References:

CN208819925U	2019-05-03
CN207233790U	2018-04-13
CN107302064A	2017-10-27
CN102859747A	2013-01-02
JP2000106164A	2000-04-11
CN201821535665U	2018-09-19

Other References: