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：US20230352743A1

公开(公告)日：2023-11-02

申请号：US18325134

申请日：2023-05-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jun Ni ,  Honggang Yu ,  Huihui Shangguan ,  Xinxin Du ,  Daichun Tang

IPC: H01M10/0587 ,  H01M4/04 ,  H01M50/102 ,  H01M50/147 ,  H01M50/449

CPC classification number: H01M10/0587 ,  H01M4/0402 ,  H01M50/102 ,  H01M50/147 ,  H01M50/449 ,  H01M2220/20 ,  H01M10/0525

Abstract: An electrode assembly and a processing method and device therefor, a battery cell, a battery and a power consuming apparatus. In some embodiments, the electrode assembly comprises: a cathode plate, an anode plate, a separator and an electrically conductive layer, wherein the separator is used to separate the cathode plate and the anode plate; the cathode plate, the separator and the anode plate are wound to form a bent region; and the electrically conductive layer is configured such that at least a part of the electrically conductive layer is provided on a surface of the cathode plate in the bent region, the cathode plate comprising a covered region that is covered by the electrically conductive layer, and the electrically conductive layer being in parallel connection with the covered region.

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：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：US11862768B2

公开(公告)日：2024-01-02

申请号：US17547535

申请日：2021-12-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui Shangguan ,  Daichun Tang ,  Xinxin Du ,  Ziyu Bai ,  Ruihuan Qin

IPC: H01M10/0587 ,  H01M50/538

CPC classification number: H01M10/0587 ,  H01M50/538 ,  H01M2220/20

Abstract: The embodiments of the present application provide a winding type electrode assembly including a positive electrode plate and a negative electrode plate; the positive electrode plate includes a first positive winding end portion and a positive winding middle section; the negative electrode plate includes a first portion and a second portion; and an active material layer of the negative electrode plate exceeds an active material layer of the positive electrode plate, and a difference between a maximum width of a negative active material layer of the first portion and a minimum width of a positive active material layer of the first positive winding end portion is larger than a difference between a maximum width of a negative active material layer of the second portion and a minimum width of a positive active material layer of the positive winding middle section.

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：US12062811B2

公开(公告)日：2024-08-13

申请号：US18105725

申请日：2023-02-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/00 ,  H01M4/04 ,  H01M50/403 ,  H01M50/431 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/489 ,  H01M50/491

CPC classification number: H01M50/491 ,  H01M4/0404 ,  H01M4/0471 ,  H01M50/403 ,  H01M50/431 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449 ,  H01M50/489

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.