公开(公告)号：US20220123313A1

公开(公告)日：2022-04-21

申请号：US17281383

申请日：2020-05-20

Applicant: Ningde Amperex Technology Limited

Inventor： Pan WANG ,  Tingling LEI ,  Hai LONG ,  Huijun LIU

IPC: H01M4/62 ,  H01M10/0587

Abstract: A battery cell includes a first electrode plate, a second electrode plate, and an insulating adhesive. The first electrode plate includes a first current collector, a first coating, and a first active layer, the first coating is disposed between the first current collector and the first active layer and includes a thermal expansion material. The first electrode plate and the second electrode plate are wound at intervals, the first electrode plate is the outermost electrode plate of the battery cell and further includes a first end which is a winding ending end, a surface of the first current collector at the first end facing toward the center of the battery cell is provided with the first active layer. The insulating adhesive includes a first sub-insulating adhesive disposed on a surface of the first current collector on the outermost side of the battery cell facing away from the first active layer.