US 11,949,059 B2
Winding method, winding machine, electrode assembly, and battery cell
Zhiyang Wu, Fujian (CN); Yiruo Wang, Fujian (CN); Gang Lin, Fujian (CN); and Guohang Liao, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Fujian (CN)
Filed on Jun. 23, 2023, as Appl. No. 18/213,277.
Application 18/213,277 is a continuation of application No. PCT/CN2022/123442, filed on Sep. 30, 2022.
Claims priority of application No. 202111162507.3 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0335778 A1, Oct. 19, 2023
Int. Cl. H01M 10/0587 (2010.01); H01M 10/04 (2006.01)
CPC H01M 10/0409 (2013.01) [H01M 10/0431 (2013.01); H01M 10/0587 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A winding method for winding a cathode plate, an anode plate and a separator to form an electrode assembly, the winding method comprising:
clamping heads of the cathode plate, the anode plate and the separator between a first half winding needle and a second half winding needle of a winding needle assembly at a winding station;
rotating the winding needle assembly at the winding station to wind the cathode plate, the anode plate and the separator to form the electrode assembly;
cutting off only the cathode plate at the upstream of the winding station;
moving the winding needle assembly from the winding station to a downstream non-winding station;
moving a further winding needle assembly located at the non-winding station to the winding station;
the further winding needle assembly located at the winding station clamping the heads of the cathode plate, the anode plate and the separator to form a next electrode assembly; and
cutting off the anode plate and the separator between the winding station and the non-winding station.