公开(公告)号：US11777072B2

公开(公告)日：2023-10-03

申请号：US17137047

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiyang Wu ,  Wang Zhang ,  Shisong Li ,  Chao Guo ,  Chao Yang

IPC: H01M4/04 ,  B05C11/02

CPC classification number: H01M4/0435 ,  B05C11/025

Abstract: This application discloses an electrode plate rolling apparatus and an electrode plate rolling method that are configured to roll an electrode plate. The electrode plate includes a coated region and an uncoated region. The electrode plate rolling apparatus includes a roller group, a heating part, and a cooling part. The heating part is configured to heat the electrode plate, and the cooling part is configured to cool the electrode plate. The heating part further includes an extension assembly, and the extension assembly can extend the uncoated region when the heating part heats the electrode plate. The electrode plate passes through the cooling part after passing through the heating part. The heating part and the cooling part are configured to reduce a difference between an extensibility parameter of the uncoated region and an extensibility parameter of the coated region.

公开(公告)号：US20220223897A1

公开(公告)日：2022-07-14

申请号：US17712087

申请日：2022-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yiruo Wang ,  Zhiyang Wu ,  Xiao Wang ,  Chengcheng Jiang ,  Chao Xie ,  Liangzhen Dai

IPC: H01M10/04

Abstract: The present application relates to a method and an apparatus for manufacturing an electrode assembly of a secondary battery. Embodiments of the present application propose a method for manufacturing an electrode assembly of a secondary battery, the method comprising joining a positive electrode plate and a first separator to form a positive electrode composite plate body; joining a negative electrode plate and a second separator to form a negative electrode composite plate body; winding the positive electrode composite plate body and the negative electrode composite plate body together to form an electrode assembly, wherein the positive electrode plate and the negative electrode plate are disposed to isolate from each other by the first separator and the second separator.

公开(公告)号：US20220021016A1

公开(公告)日：2022-01-20

申请号：US17489666

申请日：2021-09-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fenggang ZHAO ,  Zhiyang Wu ,  Ruhu Liao ,  Gang Zeng ,  Ya Dai ,  Yongsheng Yu

IPC: H01M10/04

Abstract: The disclosure relates to an electrode assembly and its forming method and a manufacturing system, a secondary battery, a battery module and a device. The electrode assembly includes: a first electrode plate including a plurality of bending sections and a plurality of stacked first stacking sections, each bending section being configured to connect two adjacent first stacking sections, herein the bending section includes a guiding portion for guiding the bending section to be bent during production; and a second electrode plate with a polarity opposite to that of the first electrode plate, the second electrode plate including a plurality of second stacking sections, and each second stacking section being disposed between two adjacent first stacking sections.