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：US10910860B2

公开(公告)日：2021-02-02

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 ,  H01M10/44 ,  H01M2/34 ,  H01M10/48

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：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：US20200014061A1

公开(公告)日：2020-01-09

申请号：US16443455

申请日：2019-06-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qiaoge Wang ,  Shengwei Wang ,  Chuanmiao Yan ,  Fuping Luo ,  Yanyun Tan ,  Manfang Zhang

IPC: H01M10/0525 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0566 ,  H01M4/587

Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5≤(m×C)/(ρ×Cap)≤6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.

公开(公告)号：US12002992B2

公开(公告)日：2024-06-04

申请号：US17875174

申请日：2022-07-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rulai Cai ,  Liwen Jiang ,  Fuping Luo ,  Tingting Zhu ,  Wumei Fang

IPC: H01M50/50 ,  H01M50/20 ,  H01M50/213 ,  H01M50/503 ,  H01M50/516 ,  H01M50/526 ,  H01M50/548

CPC classification number: H01M50/503 ,  H01M50/213 ,  H01M50/516 ,  H01M50/526 ,  H01M50/548 ,  H01M2220/20

Abstract: This application discloses a battery, an electrical device, and a method and device for manufacturing a battery. The battery includes: a plurality of battery cells arranged along a first direction, where electrode terminals are disposed on two end faces of each of the battery cells along the first direction respectively; and a busbar component, configured to connect the two electrode terminals to implement electrical connection between two battery cells. The busbar component includes a flexible bend portion. The flexible bend portion is configured to adjust a relative position between the two electrode terminals. A maximum width of the flexible bend portion along the first direction is greater than a distance between the two electrode terminals. The flexible bend portion disposed in the busbar component can be bent in various forms to meet a requirement of electrically connecting the two battery cells arranged at a variety of relative positions.

公开(公告)号：US20240113273A1

公开(公告)日：2024-04-04

申请号：US17959991

申请日：2022-10-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenzhu Xu ,  Chuanmiao Yan ,  Fuping Luo ,  Xinxin Du ,  Jiao Cao

IPC: H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021

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：US10886766B2

公开(公告)日：2021-01-05

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: H01M10/44 ,  H02J7/00 ,  H01M10/0525 ,  G01R31/382 ,  H01M10/48

Abstract: A method, an apparatus and a device for charging a battery are provided. 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-1 th 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.

公开(公告)号：US20200381788A1

公开(公告)日：2020-12-03

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 ,  H02J7/00 ,  H01M10/615

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：US20230148174A1

公开(公告)日：2023-05-11

申请号：US18149167

申请日：2023-01-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Liwen Jiang ,  Rulai Cai ,  Fuping Luo ,  Tingting Zhu ,  Wumei Fang

IPC: H01M50/559 ,  H01M50/213 ,  H01M50/548

CPC classification number: H01M50/559 ,  H01M50/213 ,  H01M50/548

Abstract: A battery, an electrical device, and a method and device for manufacturing a battery are provided. In some embodiments, the battery includes: a plurality of battery cells arranged along a first direction, where a plate-like electrode terminal is disposed on each end face of each of the battery cells along a first direction, so that two electrode terminals of two battery cells are disposed between two end faces opposite to each other along the first direction; and the two electrode terminals are configured to be at least partly stacked and fixedly connected between the two end faces along a thickness direction of the electrode terminal to enable electrical connection between the two battery cells. By fixedly connecting the electrode terminals of the battery cells directly, electrical connection is implemented between the two battery cells.

公开(公告)号：US20220376360A1

公开(公告)日：2022-11-24

申请号：US17875174

申请日：2022-07-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rulai CAI ,  Liwen Jiang ,  Fuping Luo ,  Tingting Zhu ,  Wumei Fang

IPC: H01M50/503 ,  H01M50/213 ,  H01M50/548 ,  H01M50/516 ,  H01M50/526

Abstract: This application discloses a battery, an electrical device, and a method and device for manufacturing a battery. The battery includes: a plurality of battery cells arranged along a first direction, where electrode terminals are disposed on two end faces of each of the battery cells along the first direction respectively; and a busbar component, configured to connect the two electrode terminals to implement electrical connection between two battery cells. The busbar component includes a flexible bend portion. The flexible bend portion is configured to adjust a relative position between the two electrode terminals. A maximum width of the flexible bend portion along the first direction is greater than a distance between the two electrode terminals. The flexible bend portion disposed in the busbar component can be bent in various forms to meet a requirement of electrically connecting the two battery cells arranged at a variety of relative positions.