公开(公告)号：US20220352605A1

公开(公告)日：2022-11-03

申请号：US17709022

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Zhifang Dai ,  Sen Zhang ,  Hai Long

IPC: H01M50/533 ,  H01M10/0587 ,  H01M50/538 ,  H01M10/0525

Abstract: A battery cell is formed by winding a first electrode plate, a separator, and a second electrode plate, the first electrode plate includes a first current collector, a first active substance layer disposed on a surface of the first current collector, and at least one first tab; the first active substance layer is provided with a first groove, and the first tab is disposed in the first groove and electrically connected to the first current collector; the second electrode plate includes a second current collector, a second active substance layer disposed on a surface of the second current collector, and at least one second tab; and the second tab and the second current collector are integrally formed.