公开(公告)号：US20240363871A1

公开(公告)日：2024-10-31

申请号：US18765349

申请日：2024-07-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Manman Wang ,  Feng Liu ,  Xiaoming Ge

IPC: H01M4/80 ,  H01M4/66

CPC classification number: H01M4/808 ,  H01M4/661

Abstract: An electrode sheet, a battery cell, a battery, an electrical device, and a manufacturing method for the electrode are provided. The electrode sheet includes a porous current collector, the porous current collector includes a main body and an end portion which are integrally formed, the weight per unit volume of the end portion is larger than the weight per unit volume of the main body, the thickness of the end portion is smaller than the thickness of the main body, the thickness of the end portion is D1, satisfying 5 μm≤D1≤100 μm.

公开(公告)号：US20240274977A1

公开(公告)日：2024-08-15

申请号：US18628843

申请日：2024-04-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Feng Liu ,  Yulei Fan ,  Wei Zhong ,  Xiaoming Ge ,  Chuying Ouyang

IPC: H01M50/446 ,  H01M50/403 ,  H01M50/414 ,  H01M50/434 ,  H01M50/443 ,  H01M50/491

CPC classification number: H01M50/446 ,  H01M50/403 ,  H01M50/414 ,  H01M50/434 ,  H01M50/443 ,  H01M50/491

Abstract: The present application relates to a separator, comprising: two layers of substrate and a coating formed between the two layers of substrate, wherein the coating contains inorganic particles, and 30 wt % to 70 wt % of the inorganic particles have a surface coated with a coating layer, and 70 wt % to 30 wt % of the inorganic particles have an uncoated surface, based on the total weight of the inorganic particle. The separator may realize a high mechanical strength, a high wettability, and a good interfacial bonding, and may also effectively inhibit the growth of lithium dendrites, and thus improve the cycling performance of a secondary battery.

公开(公告)号：US20240283091A1

公开(公告)日：2024-08-22

申请号：US18623037

申请日：2024-04-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wei Zhong ,  Xiaoming Ge ,  Chuying Ouyang ,  Yulei Fan ,  Feng Liu

IPC: H01M50/457 ,  H01M50/403 ,  H01M50/414 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451

CPC classification number: H01M50/457 ,  H01M50/403 ,  H01M50/414 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451

Abstract: Provided are a separator comprising a base film and a coating on the base film, wherein the coating comprises a ceramic layer partially embedded in the base film and a boehmite-like layer on the ceramic layer. The separator of the present application may effectively consume lithium dendrites, avoids the lithium dendrites from piercing the separator, and at the same time has a relatively low internal resistance. The present application further provides a method for preparing the separator, and a secondary battery, a battery module using the separator, a battery pack, and a power consuming device.