公开(公告)号：US20230223660A1

公开(公告)日：2023-07-13

申请号：US18105725

申请日：2023-02-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xitong Wang ,  Daichung Tang ,  Xinxin Du ,  Honggang Yu

IPC: H01M50/491 ,  H01M50/446 ,  H01M4/04

CPC classification number: H01M50/491 ,  H01M50/446 ,  H01M4/0404 ,  H01M4/0471

Abstract: An electrode sheet and a secondary battery comprising the same are provided. The electrode sheet comprises a current collector and an active material layer provided on at least one surface of the current collector. A first inorganic separation layer and a second inorganic separation layer are sequentially formed on the active material layer. The first inorganic separation layer comprises a plurality of pores having a diameter of 300 nm to 600 nm, and each of the plurality of pores extends from the first inorganic separation layer toward the second inorganic separation layer and penetrates through the second inorganic separation layer. The pore diameter of the pores in the second inorganic separation layer is uniform.

公开(公告)号：US11515588B2

公开(公告)日：2022-11-29

申请号：US16860408

申请日：2020-04-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinxin Du ,  Zhimin Dan ,  Fuping Luo ,  Shengwei Wang ,  Tiancong Wang ,  Xiyang Zuo

IPC: H01M10/637 ,  H01M10/615 ,  H02J7/00

Abstract: Disclosed are a heating method for a rechargeable battery, a control unit and a heating circuit. The heating method comprises: determining a frequency value of a pulse current for heating the rechargeable battery in response to a heating command of the rechargeable battery; determining a current value of the pulse current according to the frequency value and an acquired state parameter of the rechargeable battery; judging whether the current value satisfies a preset heating demand; if the current value satisfies the heating demand, generating the pulse current under control according to the frequency value; if the current value does not satisfy the heating demand, re-determining the frequency value and the current value of the pulse current. The embodiments of the present disclosure further provide a control unit and a heating circuit.

公开(公告)号：US10965138B2

公开(公告)日：2021-03-30

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：US11843119B2

公开(公告)日：2023-12-12

申请号：US18055623

申请日：2022-11-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Honggang Yu ,  Songjun Shi ,  Haizu Jin ,  Shutao Song ,  Bing Chen ,  Xinxin Du

IPC: H01M4/62 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M4/628 ,  H01M10/0587 ,  H01M2004/021

Abstract: An electrode assembly includes a positive electrode plate and a negative electrode plate wound or stacked to form a bend region, and a barrier layer provided at the bend region. At least part of the barrier layer is located between the positive electrode plate and the negative electrode plate that are adjacent to each other, and is configured to prevent at least part of ions deintercalated from the positive electrode plate from being intercalated into the negative electrode plate in the bend region.

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：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.