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Title:
ELECTROCHEMICAL DEVICE AND ELECTRIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/236070
Kind Code:
A1
Abstract:
An electrochemical device and an electric apparatus. The electrochemical device comprises an electrode assembly, and the electrode assembly is formed by winding a first plate, a second plate and a separator in a first direction, wherein the first direction refers to a winding direction, and a second direction is perpendicular to the first direction; the first plate comprises a first active material layer, and the second plate comprises a second active material layer; and in the first direction, the difference between the widths of the first active material layer and the second active material layer in the second direction is increased. In the electrochemical device, the distance between an edge of the first active material layer and an edge of the second active material layer increases in the second direction, so that a large movement space can be provided between the first active material layer and the second active material layer, and the distance between the edge of the first active material layer and the edge of the second active material layer can be better controlled during winding, thus reducing the probability of the edge of the first active material layer exceeding the edge of the second active material layer during winding, and improving the volumetric energy density and safety performance of the electrochemical device.

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Inventors:
ZHOU WEIYUAN (CN)
HAO HAIJIAO (CN)
Application Number:
PCT/CN2022/097533
Publication Date:
December 14, 2023
Filing Date:
June 08, 2022
Export Citation:
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Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
DONGGUAN POWERAMP TECH LIMITED (CN)
International Classes:
H01M4/13; H01M10/0525; H01M10/054; H01M10/0587
Foreign References:
JP2006079942A2006-03-23
CN201490267U2010-05-26
CN106356499A2017-01-25
CN102263256A2011-11-30
CN106356497A2017-01-25
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
Download PDF:
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