公开(公告)号：US11502328B2

公开(公告)日：2022-11-15

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：US20190097433A1

公开(公告)日：2019-03-28

申请号：US16138470

申请日：2018-09-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qifan ZOU ,  Fuping Luo ,  Xinxin Du ,  Shengwei Wang ,  Wenzhu Xu

IPC: H02J7/00 ,  H01M10/48 ,  H01M4/58 ,  H01M10/44

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 corresponding to a charging cut-off SOC Sn for the nth charging stage, according to the acquired battery temperature and a preset mapping relationship between a charging cut-off SOC S and a charging current value I for different temperature ranges; charging the battery with Ij in the jth charging stage; acquiring a SOC of the battery at the current time; if the SOC is less than Sj, continuing to charge the battery with if the SOC is not less than Sj and j

公开(公告)号：US11552286B2

公开(公告)日：2023-01-10

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 ,  H01M4/505 ,  H01M4/525 ,  H01M4/80 ,  H01M10/0525 ,  H01M4/02

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：US10930932B2

公开(公告)日：2021-02-23

申请号：US16268326

申请日：2019-02-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanyun Tan ,  Fuping Luo ,  Shengwei Wang ,  Xinxin Du ,  Qiaoge Wang

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/02

Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.

公开(公告)号：US10742058B2

公开(公告)日：2020-08-11

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 ,  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：US20200006765A1

公开(公告)日：2020-01-02

申请号：US16268326

申请日：2019-02-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yanyun Tan ,  Fuping Luo ,  Shengwei WANG ,  Xinxin DU ,  Qiaoge WANG

IPC: H01M4/525 ,  H01M4/505

Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.

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：US11482876B2

公开(公告)日：2022-10-25

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：US20220135133A1

公开(公告)日：2022-05-05

申请号：US17564454

申请日：2021-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: B62D21/14 ,  B60K1/04

Abstract: The present application provides a chassis, a vehicle, a device for manufacturing a vehicle and a method for manufacturing a vehicle. The chassis includes at least two movable bodies that are continuously arranged along a first preset direction, and by adjusting a position of at least one movable body in the first preset direction, a length of the chassis in the first preset direction can be changed so as to enable the chassis to adapt to the vehicle body of a different length. Since each movable body is provided at an adjacent movable body thereof with a position adjustable in a preset direction, the chassis is made into a telescopic structure that is adjustable in length. The length of the chassis can be adjusted according to the requirements to enable the chassis to adapt to the vehicle body of a different length.

公开(公告)号：US11031622B2

公开(公告)日：2021-06-08

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 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0566 ,  H01M4/583 ,  H01M4/133 ,  H01M4/131

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.