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Title:
NEGATIVE ELECTRODE POLE PIECE, ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, ELECTRICAL DEVICE, AND METHOD AND DEVICE FOR MANUFACTURING NEGATIVE ELECTRODE POLE PIECE
Document Type and Number:
WIPO Patent Application WO/2023/159634
Kind Code:
A1
Abstract:
The present application provides a negative electrode pole piece, an electrode assembly, a battery cell, a battery, an electrical device, and a method and device for manufacturing the negative electrode pole piece. The negative electrode pole piece comprises a metal foam layer; a part of the metal foam layer is a filling area, and the pores of the filling area are filled with a filler; along the thickness direction of the metal foam layer, the projection of the filler is configured to at least partially overlap the projection of a coating area of a positive electrode pole piece. According to the negative electrode pole piece in the embodiments of the present application, a part of the metal foam layer is configured as the filling area, and the pores in the filling area are filled with the filler. Thus, the filling area has high degree of density and good supporting effect, so that the part in the metal foam layer where the filling area is has better pressure bearing capacity, thus improving deformation of negative electrode pole pieces when under pressure, and further alleviating the problem of electrode assemblies being prone to deformation.

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Inventors:
CHEN YUJIE (CN)
GE XIAOMING (CN)
FAN YULEI (CN)
Application Number:
PCT/CN2022/078471
Publication Date:
August 31, 2023
Filing Date:
February 28, 2022
Export Citation:
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Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/80; H01M4/13
Foreign References:
CN1120491A1996-04-17
CN107768673A2018-03-06
CN103779581A2014-05-07
CN101465416A2009-06-24
CN103282552A2013-09-04
CN105870491A2016-08-17
CN101136475A2008-03-05
CN208904141U2019-05-24
JPH10334898A1998-12-18
Attorney, Agent or Firm:
BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCYCO., LTD. (CN)
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