公开(公告)号：US20230307643A1

公开(公告)日：2023-09-28

申请号：US18041522

申请日：2021-04-15

Applicant: BYD COMPANY LIMITED

Inventor： Kaixiang CHEN ,  Xiaodi XIE ,  Biao ZENG ,  Haipeng YAN

IPC: H01M4/587 ,  H01M4/66 ,  H01M4/133

CPC classification number: H01M4/587 ,  H01M4/661 ,  H01M4/133 ,  H01M2004/027

Abstract: A negative electrode plate is provided, which includes a current collector, and a first negative electrode active material layer and a second negative electrode active material layer sequentially arranged on the current collector. A tortuosity of the first negative electrode active material layer and a tortuosity of the second negative electrode active material layer satisfy: 1