Title:
LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/257746
Kind Code:
A1
Abstract:
The present application discloses a lithium-ion battery, comprising a positive electrode sheet, a negative electrode sheet, a separator disposed between the positive electrode sheet and the negative electrode sheet, and an electrolyte. The positive electrode sheet comprises a positive electrode current collector, a positive electrode film attached to the surface of the positive electrode current collector, and a positive electrode tab; the negative electrode sheet comprises a negative electrode current collector, a negative electrode film attached to the surface of the negative electrode current collector, and a negative electrode tab; the negative electrode film is provided with a first recess; the negative electrode tab is provided in the first recess; a first insulating adhesive tape is provided on the positive electrode sheet opposite to the first recess; the positive electrode film at the edge of the first insulating adhesive tape is provided with a first adhesive tape recess. According to the present application, forming a recess for isolating the insulating adhesive tape on the positive electrode sheet prevents excessive lithium ions deintercalated from a positive active material layer around the insulating adhesive tape from migrating to a corresponding negative electrode area, thereby improving the electrical performance and safety performance of the lithium-ion battery.
Inventors:
HAN PAN (CN)
LI XIAOBIN (CN)
FANG SHUANGZHU (CN)
LI JUNYI (CN)
LI XIAOBIN (CN)
FANG SHUANGZHU (CN)
LI JUNYI (CN)
Application Number:
PCT/CN2022/094535
Publication Date:
December 15, 2022
Filing Date:
May 23, 2022
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M10/0525; H01M4/13; H01M10/0587
Foreign References:
| CN113381058A | 2021-09-10 | |||
| CN104157914A | 2014-11-19 | |||
| CN107834014A | 2018-03-23 | |||
| CN204905336U | 2015-12-23 | |||
| US20160126514A1 | 2016-05-05 | |||
| CN205159450U | 2016-04-13 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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