公开(公告)号：US20240347785A1

公开(公告)日：2024-10-17

申请号：US18753676

申请日：2024-06-25

Applicant: BYD COMPANY LIMITED

Inventor： Denghai ZHONG ,  Yudong LEI ,  Dianda GUO ,  Jianwen LONG ,  Guokang FAN

IPC: H01M10/42 ,  H01M4/02 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/531 ,  H01M50/586 ,  H01M50/59

CPC classification number: H01M10/4235 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/531 ,  H01M50/586 ,  H01M50/59 ,  H01M2004/027 ,  H01M2004/028

Abstract: An electrode core includes a negative electrode, a negative electrode tab, and a positive electrode sheet. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material attached to the negative electrode current collector, and a negative electrode tab groove is disposed on the negative electrode active material. The negative electrode tab is disposed in the negative electrode tab groove. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material attached to the positive electrode current collector. A first groove is disposed on the positive electrode active material, the first groove disposed is opposite to the negative electrode tab groove, and a projection of the first groove on the negative electrode sheet is located in the negative electrode tab groove.