Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Limited

Honggang Yu

Xinxin Du

Haizu Jin

Daichun Tang

Huihui Shangguan

Songjun Shi

Yunjian Ma

Jun Ni

Yidong Shen

Jianping Zhang

Bing Chen

Yanhui Li

Mingfeng Lin

Shutao Song

Yuping Huang

Yu Dai

Xitong Wang

A battery, a battery module, a battery pack and an electric device are provided. In some embodiments, the battery includes: a positive electrode, a separator and a negative electrode, wherein the separator includes a base film, a first coating provided on a first surface of the base film, and a second coating provided on a second surface of the base film, the first coating includes a first polar substance, and hydrogen bonds are formed between the first polar substance and a positive binder; hydrogen bonds are formed between the second polar substance and a negative binder and/or a negative active component. In the present disclosure, binding forces between the separator and the positive electrode and the negative electrode may be increased by the hydrogen bonds, thus reducing a cycle expansion rate of a bare cell and improving a high-rate discharge performance and a cycle performance of the battery.

Battery, battery module, battery pack and electric device

An electrode sheet and a secondary battery comprising the same are provided. The electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector. A first inorganic separation layer and a second inorganic separation layer are sequentially formed on the active material layer. The first inorganic separation layer comprises a plurality of pores having a diameter of 300 nm to 600 nm, and each of the plurality of pores extends from the first inorganic separation layer toward the second inorganic separation layer and penetrates through the second inorganic separation layer. The pore diameter of the pores in the second inorganic separation layer is uniform.

Electrode sheet and secondary battery comprising the same

An electrode assembly includes a positive electrode plate and a negative electrode plate wound or stacked to form a bend region, and a barrier layer provided at the bend region. At least part of the barrier layer is located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and is configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region.

Electrode assembly, battery cell, battery, and method and apparatus for manufacturing electrode assembly

Growing community of inventors

Ningde, China

Honggang Yu