公开(公告)号：US20230344047A1

公开(公告)日：2023-10-26

申请号：US18215850

申请日：2023-06-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rulai CAI ,  Xiaobo CHEN ,  Liwen JIANG ,  Fuping LUO ,  Yongshou LIN

IPC: H01M50/188 ,  H01M50/15

CPC classification number: H01M50/188 ,  H01M50/15

Abstract: An end cover assembly may include: a cover plate provided with an electrode lead-out hole; an electrode terminal located on one side of the cover plate in a thickness direction and covering the electrode lead-out hole; and a sealing element disposed between the electrode terminal and the cover plate so as to seal the electrode lead-out hole along a circumference of the electrode lead-out hole. The sealing element may include a body and a first insulating element. The first insulating element may be connected to the body and have a higher melting point than the body. The first insulating element may be configured to insulate the electrode terminal from the cover plate after the body is melted, so as to keep electrode terminals of two polarities insulated from each other at thermal runaway of a battery cell.

公开(公告)号：US20230387520A1

公开(公告)日：2023-11-30

申请号：US18446716

申请日：2023-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rulai CAI ,  Liwen JIANG ,  Fuping LUO ,  Tingting ZHU ,  Wumei FANG

IPC: H01M50/152 ,  H01M50/538 ,  H01M50/548 ,  H01M50/186 ,  H01M50/559 ,  H01M50/166

CPC classification number: H01M50/152 ,  H01M50/538 ,  H01M50/548 ,  H01M50/186 ,  H01M50/559 ,  H01M50/166 ,  H01M2220/20

Abstract: An end cover assembly applied to a battery cell includes an end cover provided with an electrode lead-out hole and including a first mating portion provided at a side, facing inside of the battery cell, of the end cover, an electrode terminal disposed at the end cover and covering the electrode lead-out hole, and a connecting member configured to electrically connect the electrode terminal and an electrode assembly of the battery cell. The connecting member includes a second mating portion configured to be mated with the first mating portion to provide deformation resistance of the connecting member along a radial direction of the electrode lead-out hole.

公开(公告)号：US20200006802A1

公开(公告)日：2020-01-02

申请号：US16443371

申请日：2019-06-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenzhu XU ,  Chuanmiao YAN ,  Fuping LUO ,  Xinxin DU ,  Jiao CAO

IPC: H01M10/0525 ,  H01M10/04

Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, the positive active material comprises a layered lithium-containing compound, the negative active material comprises graphite, the positive film and the negative film satisfy a relationship 0.3≤(OIc×PDc)/(OIa×PDa)≤20.0. The present disclosure can make the lithium-ion battery have smaller swelling and higher charging capability, and also make the lithium-ion battery have excellent cycle life and excellent safety performance during the long-term fast charging process.

公开(公告)号：US20220190623A1

公开(公告)日：2022-06-16

申请号：US17120453

申请日：2020-12-14

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xin FU ,  Fuping LUO ,  Shengwei WANG

IPC: H02J7/00 ,  H01M10/42

Abstract: A method, an apparatus and a system for controlling charging of a battery module are provided in the present disclosure. The method for controlling charging of the battery module may include: acquiring an internal pressure value of the battery module; determining a target pressure threshold range to which the acquired internal pressure value of the battery module belongs, based on a plurality of predefined pressure threshold ranges; obtaining a target charge cutoff voltage corresponding to the target pressure threshold range, based on a correspondence relationship between a plurality of predefined charge cutoff voltage and the plurality of predefined pressure threshold ranges; and controlling the battery module to be charged based on the obtained target charge cutoff voltage.

公开(公告)号：US20180316206A1

公开(公告)日：2018-11-01

申请号：US15965845

申请日：2018-04-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fuping LUO ,  Shengwei Wang ,  Xinxin Du ,  Xin Fu

IPC: H02J7/00 ,  G01R31/36 ,  H01M10/0525

Abstract: A method, an apparatus and a device for charging a battery are provided in the present disclosure. The method may include: defining a charging current In for an Nth charging stage of a charging process based on charging capability of the battery, wherein In Vn-1 and Vn is smaller than a theoretical charge cutoff voltage Vmax; in case that the N−1th charging stage is not a last charging stage, charging the battery with In-1 during the N−1th charging stage and proceeding to the Nth charging stage when a voltage across the battery reaches Vn-1; and in case that the N−1th charging stage is the last charging stage, charging the battery with In-1 during the N−1th charging stage and stopping charging when the voltage across the battery reaches Vn-1.