公开(公告)号：US20230369636A1

公开(公告)日：2023-11-16

申请号：US18357408

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xitong WANG ,  Daichun TANG ,  Xinxin DU ,  Honggang YU

IPC: H01M10/04 ,  H01M10/42 ,  H01M50/383 ,  H01M50/103

CPC classification number: H01M10/0431 ,  H01M10/4235 ,  H01M50/383 ,  H01M50/103

Abstract: An electrode assembly, a battery cell, a battery, and an electric device are described. The electrode assembly includes a first electrode plate, a second electrode plate, and a first insulation layer, the first electrode plate and the second electrode plate being wound to form the electrode assembly, where a winding terminating end of the first electrode plate exceeds a winding terminating end of the second electrode plate by at least half a turn so that the first electrode plate entirely covers an outer surface of an outermost turn of the second electrode plate, and the first insulation layer being applied on an outer surface of an outermost turn of the first electrode plate. According to this application, the terminating end of the first electrode plate is set to exceed the second electrode plate by at least half a turn.

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：US20200335984A1

公开(公告)日：2020-10-22

申请号：US16919109

申请日：2020-07-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xinxin DU ,  Fuping Luo ,  Shengwei Wang ,  Xin Fu

IPC: H02J7/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/48

Abstract: The present disclosure provides a method, apparatus, and device for charging a battery, and storage medium. The method for charging a battery includes acquiring a battery temperature; determining a charging current value In for the nth charging stage of the battery, according to the battery temperature and a mapping relationship between different temperature ranges and charging current values I, wherein a preset charging cut-off voltage value Vn for the nth charging stage is greater than Vn-1; charging the battery with Ij in the jth charging stage; acquiring a voltage value of the battery at the current time; if the voltage value is less than Vj, continuing to charge the battery with Ij; if the voltage value is not less than Vj and j

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.