Title:
TOP COVER ASSEMBLY, SECONDARY BATTERY, BATTERY MODULE AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/082758
Kind Code:
A1
Abstract:
The present application relates to a top cover assembly, a secondary battery, a battery module, and a device. The top cover assembly comprises: a top cover plate, which is provided with an electrode lead-out hole; an electrode terminal, which is disposed on a top cover plate and covers the electrode lead-out hole; a current collector, which comprises a protruding portion with an accommodating cavity and is at least partially disposed within the electrode lead-out hole and welded with the electrode terminal to form a welding portion facing the accommodating cavity, the current collector is provided with a connecting hole, the connecting hole is provided with a first opening disposed on a surface, away from the electrode terminal, of the current collector; an insulating protection member, which is disposed on one side, away from the electrode terminal, of the current collector, comprises a shielding portion and a connecting portion connected with the shielding portion, wherein the shielding portion shields a welding portion, and at least a portion of the connecting portion extends into the connecting hole through the first opening and is connected and fixed with the current collector. The top cover assembly of the present application can provide protection from dropping of the metal debris on the welding portion produced by welding connection between the current collector and the electrode terminal through the insulating protection member, thereby improving the safety of the secondary battery.
Inventors:
LEI YUYONG (CN)
XING CHENGYOU (CN)
WANG PENG (CN)
YANG JIANXIONG (CN)
KANG WENLONG (CN)
XING CHENGYOU (CN)
WANG PENG (CN)
YANG JIANXIONG (CN)
KANG WENLONG (CN)
Application Number:
PCT/CN2020/114713
Publication Date:
May 06, 2021
Filing Date:
September 11, 2020
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M2/04; H01M2/20
Foreign References:
| CN210743993U | 2020-06-12 | |||
| CN209880742U | 2019-12-31 | |||
| CN210403894U | 2020-04-24 | |||
| CN208256820U | 2018-12-18 | |||
| JP2011216402A | 2011-10-27 |
Other References:
See also references of EP 3926742A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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