Title:
CURRENT COLLECTOR, ELECTRODE SHEET, ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/221606
Kind Code:
A1
Abstract:
Provided in the present application are a current collector, an electrode sheet, an electrode assembly, a battery cell, a battery and an electric apparatus, belonging to the technical field of batteries. The current collector comprises a body part and reinforcement protrusions. In the thickness direction of the current collector, the body part is provided with two coated surfaces which are oppositely arranged. The reinforcement protrusions are arranged in a protruding mode on at least one of the two coated surfaces. In an electrode sheet having such a current collector, the current collector can increase the contact area between an active substance layer and the current collector, thus on one hand, facilitating improvement of the bonding strength of the current collector and the active substance layer, and reducing the contact resistance between the current collector and the active substance layer, and on the other hand, improving the structural strength of the current collector and reducing the minimum thickness requirement of the current collector; therefore, for an electrode sheet with the same overall thickness, while the structural strength of the current collector is ensured, the current collector can effectively increase the carrying capacity of the active material layer of the electrode sheet, and the electrolyte storing capacity of an electrode sheet can be improved.
Inventors:
GUO SUOGANG (CN)
FU CHENGHUA (CN)
YE YONGHUANG (CN)
CHANG WEN (CN)
FU CHENGHUA (CN)
YE YONGHUANG (CN)
CHANG WEN (CN)
Application Number:
PCT/CN2023/080133
Publication Date:
November 23, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/70
Foreign References:
| CN212485372U | 2021-02-05 | |||
| CN207303231U | 2018-05-01 | |||
| CN207732007U | 2018-08-14 | |||
| JP2012018785A | 2012-01-26 |
Attorney, Agent or Firm:
BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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