US 12,424,614 B2
Positive electrode plate, negative electrode plate, battery cell, battery, and electric apparatus
Yangfang Ling, Ningde (CN); Shaocong Ouyang, Ningde (CN); Xiao Chen, Ningde (CN); Ziyi Yin, Ningde (CN); and Huanji Liu, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jan. 17, 2025, as Appl. No. 19/029,492.
Application 19/029,492 is a continuation of application No. PCT/CN2023/072808, filed on Jan. 18, 2023.
Prior Publication US 2025/0167207 A1, May 22, 2025
Int. Cl. H01M 4/136 (2010.01); H01M 4/02 (2006.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/1397 (2010.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 50/209 (2021.01)
CPC H01M 4/136 (2013.01) [H01M 4/131 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 50/209 (2021.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 4/1391 (2013.01); H01M 4/1397 (2013.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A positive electrode plate, comprising:
a positive current collector; and
a positive active material layer disposed on at least one side of the positive current collector, wherein the positive current collector comprises a positive body portion and at least one positive tab disposed at one end of the positive body portion;
wherein a width of a root of each positive tab along a machine direction (MD) is m1, measured in mm; a thickness of the root of each positive tab is d1, measured in mm; along the MD, a distance between central axes of two adjacent positive tabs is b1, measured in mm; a conductivity of the positive current collector is S1, measured in S/m; a width of the positive active material layer along a transverse direction (TD) is a1, measured in mm; a mass per unit area of the positive active material layer is CW1, measured in g/1540.25 mm2; and
wherein a design parameter of each positive tab is Fc, where

OG Complex Work Unit Math
measured in 15.4025S·mm·g−1, and a value of Fc satisfies Fc≥0.1.