公开(公告)号：US20200006750A1

公开(公告)日：2020-01-02

申请号：US16449196

申请日：2019-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Manfang Zhang ,  Shengwei Wang ,  Fuping Luo ,  Xinxin Du ,  Qiaoge Wang

IPC: H01M4/133 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/80 ,  H01M4/505 ,  H01M4/525

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 material having a chemical formula of LiaNixCoyMzO2, the negative active material comprises a graphite-type carbon material, the lithium-ion battery satisfies a relationship 58%≤KYa/(KYa+KYc)×100%≤72%. In the present disclosure, by reasonably matching the relationship between the anti-compression capability of the positive active material and the anti-compression capability of the negative active material, it can make the positive electrode plate and the negative electrode plate both have good surface integrity, and in turn make the lithium-ion battery have excellent dynamics performance and excellent cycle performance at the same time.

公开(公告)号：US20190097432A1

公开(公告)日：2019-03-28

申请号：US16134054

申请日：2018-09-18

Applicant: Contemporary Amperex Technology Co., Limited

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

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

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：US20180205236A1

公开(公告)日：2018-07-19

申请号：US15869318

申请日：2018-01-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xin Fu ,  Fuping Luo ,  Shengwei Wang

IPC: H02J7/00 ,  H01M2/34 ,  H01M10/44

CPC classification number: H02J7/007 ,  H01M2/34 ,  H01M2/345 ,  H01M10/44 ,  H01M10/445 ,  H01M10/48 ,  H01M2200/00 ,  H01M2200/20 ,  H02J7/0077 ,  H02J7/0088

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.