公开(公告)号：US20230083594A1

公开(公告)日：2023-03-16

申请号：US18055623

申请日：2022-11-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang YU ,  Songjun SHI ,  Haizu JIN ,  Shutao SONG ,  Bing CHEN ,  Xinxin DU

IPC: H01M4/62 ,  H01M10/0587

Abstract: 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.

公开(公告)号：US20240347836A1

公开(公告)日：2024-10-17

申请号：US18756745

申请日：2024-06-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofeng ZHEN ,  Mingfeng LIN ,  Bing CHEN ,  Yuping HUANG ,  Yidong SHEN ,  Zhiling LI ,  Haikun ZHAO ,  Bangyong WANG

IPC: H01M50/242 ,  H01M50/209 ,  H01M50/291

CPC classification number: H01M50/242 ,  H01M50/209 ,  H01M50/291 ,  H01M2220/20

Abstract: A battery includes a plurality of arranged battery cells; and a pressure regulating apparatus, including a body portion and a regulating valve, where the body portion is arranged between adjacent battery cells, a gas pipeline being formed in the body portion, and the regulating valve is arranged in the gas pipeline and configured to regulate pressure in the gas pipeline so as to adjust a gap between adjacent battery cells.

公开(公告)号：US20240014401A1

公开(公告)日：2024-01-11

申请号：US18470231

申请日：2023-09-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang YU ,  Songjun SHI ,  Haizu JIN ,  Shutao SONG ,  Bing CHEN ,  Xinxin DU

IPC: H01M4/62 ,  H01M10/0587

CPC classification number: H01M4/628 ,  H01M10/0587 ,  H01M2004/021

Abstract: 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. A ratio of a thickness of the barrier layer to a porosity of the barrier layer is larger than or equal to 3.5 microns and smaller than or equal to 2000 microns.

公开(公告)号：US20230317932A1

公开(公告)日：2023-10-05

申请号：US18331260

申请日：2023-06-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiyu XIA ,  Yunjian MA ,  Mingfeng LIN ,  Bing CHEN ,  Yuping HUANG ,  Jianping ZHANG ,  Yanhui LI ,  Yumeng LIU

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/134

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M4/134

Abstract: This application provides a yolk core-shell structured composite material, a preparation method of the material, and a secondary battery containing the material. The yolk core-shell structured composite material includes a core and a shell. A cavity exists between the core and the shell. The core includes a phosphorus-doped silicon material, and the shell includes a nitrogen-doped carbon material. This application can improve a capacity and a capacity retention rate of the battery.

公开(公告)号：US20190267582A1

公开(公告)日：2019-08-29

申请号：US16358366

申请日：2019-03-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bing CHEN ,  Zhijun Guo ,  Peng Wang ,  Zhiyu Wang ,  Jie Zhang

IPC: H01M2/04 ,  H01M2/12 ,  H01M2/36

Abstract: The present disclosure provides a cap assembly and a secondary battery. The cap assembly comprises a cap plate, a reinforcement structure and a vent piece. The cap plate is provided with a through-hole; the vent piece is fixed with the cap plate and covers the through-hole from above. The reinforcement structure is provided in the through-hole and fixed with an inner wall of the through-hole, and the reinforcement structure partially blocks the through-hole. The secondary battery comprises: a case having an opening in a top thereof, an electrode assembly received in the case, and the cap assembly according to the first aspect of the present disclosure fixed with the case in the top. When the secondary battery works normally, a certain amount of gas will be generated inside the secondary battery, thereby leading to a pressure inside the secondary battery increasing. By providing the reinforcement structure in the through-hole, it can increase the strength of the cap plate, thereby reducing deformation of the cap plate when the pressure inside the secondary battery increases, especially deformation of the cap plate at the through-hole, and in turn ensuring the connecting strength between the vent piece and the cap plate, improving the stability and the consistency of vent function of the cap assembly, and promoting the safety performance of the secondary battery.