公开(公告)号：US20230344085A1

公开(公告)日：2023-10-26

申请号：US18218593

申请日：2023-07-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yong HU ,  Chunmei SHI ,  Haiming ZHANG ,  Chenglong YANG ,  Linting DING ,  Daichun TANG

IPC: H01M50/489 ,  H01M50/42 ,  H01M50/434 ,  H01M50/451 ,  G01N21/64

CPC classification number: H01M50/489 ,  H01M50/42 ,  H01M50/434 ,  H01M50/451 ,  G01N21/643 ,  G01N2021/6439

Abstract: The present application provides a separator, a secondary battery, a battery module, a battery pack and an electrical apparatus. The separator may sequentially include a first region, a main region and a second region in a first direction. At least one surface of the first region and/or at least one surface of the second region may be provided with a fluorescent coating. The fluorescent coating may be used to identify whether the separator is folded or not.

公开(公告)号：US20220311054A1

公开(公告)日：2022-09-29

申请号：US17543850

申请日：2021-12-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ziyu BAI ,  Huihui SHANGGUAN ,  Xinxin DU ,  Yang HU ,  Daichun TANG

IPC: H01M10/0585 ,  H01M50/209 ,  H01M4/38 ,  H01M4/70

Abstract: The present application provides an electrode assembly, a batter cell, a battery, an electric apparatus, and a manufacturing method and device of the electrode assembly. A negative plate of the electrode assembly includes a plurality of first negative active material layers located in an abutting region, and a plurality of second negative active material layers located in a non-abutting region; a positive plate of the electrode assembly includes a plurality of first positive active material layers located in the abutting region, and a plurality of second positive active material layers located in the non-abutting region. An active material capacity per unit area of the first negative active material layer is greater than that of the second negative active material layer; and/or an active material capacity per unit area of the first positive active material layer is less than that of the second positive active material layer.

公开(公告)号：US20210135325A1

公开(公告)日：2021-05-06

申请号：US17145613

申请日：2021-01-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhoufu LI ,  Daichun TANG ,  Xigui LONG ,  Xiaoxi ZHANG ,  Baiqing LI ,  Lingyan JIANG

IPC: H01M50/70 ,  H01M10/052 ,  H01M10/0585 ,  H01M50/533 ,  H01M50/147

Abstract: A secondary battery, a battery pack, and an electric device. The secondary battery includes: a case with an inner cavity in which an electrolyte is included; a cap assembly covering an opening of the case; and an electrode assembly located in the inner cavity, the electrode assembly including an electrode unit and tabs, and along a length direction, the electrode unit including two side portions disposed oppositely, the tabs extending from the side portions; a connecting component configured to connect the tabs and the cap assembly; a flow guiding component located between a corresponding connecting component and a corresponding side portion, being connected to the connecting component and provided with an avoiding portion configured to avoid the tabs, and being in contact with the electrolyte, at least part of the flow guiding component being in contact with the corresponding side portion, and the flow guiding component.