Title:
ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/082271
Kind Code:
A1
Abstract:
The present application relates to the technical field of batteries, and provides an electrode assembly, a battery cell, a battery and an electrical device. The battery cell comprises a negative pole piece and a positive pole piece. The negative pole piece comprises a porous current collector and a first tab connected to at least one end of the porous current collector. The positive pole piece comprises a body portion and a second tab connected to at least one end of the body portion. In the thickness direction of the porous current collector, the body portion and the porous current collector are stacked. In a first direction, two ends of the porous current collector do not exceed the body portion, and the first direction is perpendicular to the thickness direction of the porous current collector. According to the electrode assembly of the described type of structure, a certain binding force can be applied to the edge of the porous current collector in the first direction, and lithium metal on the porous current collector is induced for uniform deposition so as to mitigate the phenomenon in which lithium metal is deposited on the edge of the porous current collector and forms crystal dendrites, thereby effectively inhibiting the growth of lithium metal crystal dendrites, and helping to reduce the risk of the electrode assembly short-circuiting.
Inventors:
WANG MANMAN (CN)
WANG YIHENG (CN)
GE XIAOMING (CN)
ZHANG ZHENGFANG (CN)
FAN YULEI (CN)
WANG YIHENG (CN)
GE XIAOMING (CN)
ZHANG ZHENGFANG (CN)
FAN YULEI (CN)
Application Number:
PCT/CN2022/126724
Publication Date:
April 25, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/80; H01M4/70
Foreign References:
| JP2013045795A | 2013-03-04 | |||
| CN114597476A | 2022-06-07 | |||
| CN214588915U | 2021-11-02 | |||
| CN216120663U | 2022-03-22 | |||
| US20210296744A1 | 2021-09-23 |
Attorney, Agent or Firm:
BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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