公开(公告)号：US20240274893A1

公开(公告)日：2024-08-15

申请号：US18631349

申请日：2024-04-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huaichao TANG ,  Longqing PENG ,  Ting LI ,  Qianjun CHEN

IPC: H01M10/42 ,  H01M50/117 ,  H01M50/122 ,  H01M50/124 ,  H01M50/531

CPC classification number: H01M10/4235 ,  H01M50/117 ,  H01M50/122 ,  H01M50/1243 ,  H01M50/531 ,  H01M2220/20

Abstract: A cell core, a battery cell, a battery, and an electric device are described. The cell core includes a cell core body, where the cell core body includes at least one electrode assembly, the cell core body has two opposite end faces and a cell core side face connected between the two end faces, and tabs of any one of the electrode assemblies are led out from at least one end face of the two end faces; where the cell core further includes a cell core protection layer, the cell core protection layer covers at least a part of a side face of the cell core body, and the cell core protection layer includes an inorganic coating layer or an organic-inorganic composite structure coating layer. Such cell core helps reduce a risk of short circuit between the cell core and a housing.

公开(公告)号：US20240258584A1

公开(公告)日：2024-08-01

申请号：US18592946

申请日：2024-03-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ting LI ,  Haizu JIN ,  Shaojun NIU ,  Huaichao TANG ,  Longqing PENG

IPC: H01M10/42 ,  C23C16/02 ,  C23C16/34 ,  C23C16/40 ,  C23C16/44 ,  C23C16/505 ,  C23C16/56 ,  H01M10/04

CPC classification number: H01M10/4235 ,  C23C16/0245 ,  C23C16/345 ,  C23C16/401 ,  C23C16/403 ,  C23C16/405 ,  C23C16/407 ,  C23C16/4408 ,  C23C16/505 ,  C23C16/56 ,  H01M10/0404

Abstract: A protection method for a secondary battery includes evacuating the secondary battery through an injection opening of the secondary battery to within 100 kPa, introducing a first reactant into the secondary battery through the injection opening until a pressure of the secondary battery rises by more than 1 Pa and maintaining the pressure for more than 1 ms, evacuating the secondary battery through the injection opening to within 100 kPa, and introducing a second reactant into the secondary battery through the injection opening until the pressure rises by more than 1 Pa and maintaining the pressure for more than 1 ms, thereby forming a protection layer on an internal surface of the secondary battery.