Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Limited

Zhiyang Wu

Yiruo Wang

Keqiang Li

Gang Lin

Chao Xie

Xiaosong Liu

Qinglin Bai

Mingjian Liu

Yuqun Zeng

Fenggang Zhao

Bin Xie

Chao Yang

Xiao Wang

Yuqian Wen

Lingyan Jiang

Shisong Li

Chao Guo

Zhihua Wen

Zhihui Wang

Yongli Zhang

Jiacai Cai

Yi Lu

Dajun Ni

Peng Jin

Lijun Li

Guoda Huang

Jiayi Zhao

Jianlei Wang

Ruhu Liao

Qingyuan Jiang

Liangzhen Dai

Changsheng He

Wang Zhang

Bo Han

Gang Zeng

Ya Dai

Guohang Liao

Chengcheng Jiang

Chaonan Liu

Chunyang Peng

Shan Gao

Yunzhi Li

Yongsheng Yu

Provided an etching device that is capable of effectively realizing an opening structure with low cost and simplified process. The etching device includes: a porous roller, the porous roller being a hollow structure with openings at both ends, an etching liquid being accommodated in the hollow structure, and the porous roller being provided with a plurality of openings; a pressing roller, attached to the porous roller and arranged above the liquid level of the etching liquid, for pressing and attaching a metal layer to be etched onto the surface of the porous roller; wherein during rotation of the porous roller, the etching liquid passes through at least part of the openings of the plurality of openings and continuously soaks the metal layer in contact with the at least part of the openings, so as to continuously etch the metal layer in contact with the at least part of the openings.

Etching device

The present application relates to a secondary battery, a battery module and an apparatus. The secondary battery includes an electrode assembly and a casing. The electrode assembly includes a main body portion and a tab portion, the tab portion extending out from the main body portion along an end of the main body portion and including an outer peripheral surface. The casing includes an accommodating hole for accommodating the electrode assembly. The casing includes a limiting protrusion. The outer peripheral surface extends around an axis of the accommodating hole. The limiting protrusion protrudes toward the tab portion and presses against the outer peripheral surface of the tab portion. The limiting protrusion is adapted to limit a position of the tab portion. The secondary battery provided by the present application can reduce the possibility of fatigue fracture of the adapting piece.

Secondary battery, battery module, and apparatus

An electrode assembly manufacturing device includes a winding mechanism, a heating mechanism, a conveyor belt arranged between the heating mechanism and the winding mechanism, and a forming mechanism. The winding mechanism is configured to wind a positive electrode sheet, a separator, and a negative electrode sheet into an electrode assembly. The conveyor belt is configured to transfer the electrode assembly from the winding mechanism to the heating mechanism. The heating mechanism is configured to heat the electrode assembly. The forming mechanism is configured to press and form the electrode assembly.

Electrode assembly manufacturing device

This application relates to a conveyor and a baking device. A traction rope may bring an electrode plate to move in a transport space. The traction rope may be of high flexibility and can more smoothly bring the electrode plate to move in various complex environments such as an arcuate oven, thereby effectively avoiding derailment or jamming of the conveyor in the oven and conveying the electrode plate more smoothly in the oven.

Conveyor and baking device

Provided are an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes first electrode plates and a second electrode plate that are of opposite polarities. The second electrode plate and two first electrode plates are stacked and wound to form the electrode assembly. The second electrode plate is located between the two first electrode plates. Each of the first electrode plates includes a first composite current collector and a first active material layer. The first active material layer is disposed on a surface that is of the first composite current collector and that is oriented back from the second electrode plate. The first composite current collector is configured to dielectrically isolate the first active material layer from the second electrode plate and allow passage of ions transmitted between the first active material layer and the second electrode plate.

Electrode assembly, battery cell, battery, and electrical device

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.

Method and apparatus for manufacturing electrode assembly of secondary battery

A winding method may comprise clamping heads of an anode plate, a cathode plate and a separator between a first half winding needle and a second half winding needle of a winding needle assembly at a winding station; and rotating the winding needle assembly at the winding station to wind the anode plate, the cathode plate and the separator to form an electrode assembly.

Winding method, winding machine, electrode assembly, and battery cell

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.

Electrode plate rolling apparatus and electrode plate rolling method

The present disclosure relates to a secondary battery and a method of manufacturing the secondary battery. The secondary battery includes: a case; an electrode assembly, accommodated in the case and including a main body and a tab connected to the main body; a cap plate, coupled to the case; an electrode terminal, located on an outer side of the cap plate and including a first metal layer and a second metal layer disposed one on top of another; and a current collecting member, connected between the tab and the electrode terminal.

Secondary battery and method of manufacturing the secondary battery

Growing community of inventors

Ningde, China

Zhiyang Wu