公开(公告)号：US20240204172A1

公开(公告)日：2024-06-20

申请号：US18590277

申请日：2024-02-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu PAN ,  Xiaofu XU ,  Xinyu ZHANG ,  Yibo SHANG ,  Qian LIU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/366 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/624 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode active material includes a low-to-medium nickel ternary material and a high-lattice-volume-change positive electrode material. The low-to-medium nickel ternary material has a mass ratio W1≥45% in the positive electrode active material. The high-lattice-volume-change positive electrode material satisfies: the thickness change rate of the positive electrode active substance layer is ≥2.6%, and the thickness change rate is (H1−H2)/H1, where H1 is the fully discharged thickness of the positive electrode active substance layer, and H2 is the fully charged thickness of the positive electrode active substance layer.

公开(公告)号：US20240186479A1

公开(公告)日：2024-06-06

申请号：US18441607

申请日：2024-02-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dejun XIAO ,  Chunpeng YU ,  Jiahua CHEN ,  Quanguo LI ,  Jingxuan SUN ,  Qian LIU

IPC: H01M4/04 ,  H01M4/02 ,  H01M10/647 ,  H01M50/209 ,  H01M50/249

CPC classification number: H01M4/0404 ,  H01M10/647 ,  H01M50/209 ,  H01M50/249 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode plate includes a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector. The negative electrode film layer includes a middle coating region and edge coating regions located on two opposite sides of the middle coating region. Thickness A1 of the edge coating region in a fully-discharged state, thickness B1 of the edge coating region in a fully-charged state, thickness A2 of the middle coating region in the fully-discharged state, and thickness B2 of the middle coating region in the fully-charged state satisfy (B1−A1)/A1>(B2−A2)/A2.

公开(公告)号：US20240097272A1

公开(公告)日：2024-03-21

申请号：US18518611

申请日：2023-11-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wanqiu MENG ,  Qian LIU ,  Yonghuang YE ,  Yulian ZHENG ,  Longfei XUE ,  Xiaoxi ZHANG

IPC: H01M50/30

CPC classification number: H01M50/394

Abstract: A gas-exhausting apparatus includes a gas-exhausting body and a gas-exhausting mechanism. The gas-exhausting mechanism includes a connecting assembly and a gas-ventilating member. The connecting assembly includes first and second connecting members. The first connecting member is provided with a first through hole for communicating with an inside of the battery cell. The second connecting member is provided with a second through hole for communicating with an outside of the battery cell. The first connecting member is configured to attach to a surface of the gas-ventilating member facing the inside of the battery cell. The second connecting member is configured to attach to a surface of the gas-ventilating member facing away from the inside of the battery cell. An orthographic projection of the first through hole on the gas-ventilating member and an orthographic projection of the second through hole on the gas-ventilating member are arranged to be staggered from each other.

公开(公告)号：US20230307927A1

公开(公告)日：2023-09-28

申请号：US18324879

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Qian LIU ,  Yonghuang YE ,  Haizu JIN ,  Fajun HUANG ,  Xiaofu XU ,  Jun PENG

IPC: H02J7/00 ,  H01M10/42 ,  G01R31/382 ,  G01R31/367 ,  G01R31/36

CPC classification number: H02J7/0019 ,  H01M10/4207 ,  G01R31/382 ,  G01R31/367 ,  G01R31/3648 ,  H01M10/425 ,  H01M2010/4271

Abstract: A control method of a battery apparatus includes acquiring a state parameter of a first battery module of the battery apparatus, controlling the first battery module and a charging device to form a first charging loop in response to the state parameter of the first battery module being less than a preset threshold, and controlling the first battery module, a second battery module of the battery apparatus, and the charging device to be connected in series to form a second charging loop in response to the state parameter of the first battery module being greater than or equal to the preset threshold. A charging rate of the first charging loop is higher than a charging rate of the second charging loop.

公开(公告)号：US20230211701A1

公开(公告)日：2023-07-06

申请号：US18182841

申请日：2023-03-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chenxu LUO ,  Jianfu HE ,  Qian LIU ,  Yu YAN ,  Yonghuang YE ,  Haizu JIN

IPC: B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M10/44 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485

CPC classification number: B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M10/44 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485 ,  B60L2240/547 ,  B60L2240/545

Abstract: A charging method for a secondary battery including a lithium-supplementing material. The method includes acquiring a first state of health of the secondary battery in response to the secondary battery being at a preset charging node, activating the lithium-supplementing material in response to the first state of health being less than or equal to a first threshold to supplement lithium for the secondary battery, performing a charging process on the secondary battery, determining a second state of health of the secondary battery based on a working parameter of the secondary battery in the charging process, and charging the secondary battery in response to the second state of health being greater than a second threshold.

公开(公告)号：US20230061760A1

公开(公告)日：2023-03-02

申请号：US18053493

申请日：2022-11-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Chengdu LIANG ,  Haizu JIN ,  Qian LIU ,  Xia HU ,  Xiaofu XU

IPC: H01M10/658 ,  H01M50/375

Abstract: This application provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell, a second battery cell, and a first thermal insulation member. The second battery cell is disposed adjacent to the first battery cell, an energy density of the second battery cell is less than that of the first battery cell, and the first thermal insulation member is disposed between the first battery cell and the second battery cell.

公开(公告)号：US20220393291A1

公开(公告)日：2022-12-08

申请号：US17887644

申请日：2022-08-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu XU ,  Yonghuang YE ,  Qian LIU ,  Haizu JIN ,  Chengdu LIANG

IPC: H01M50/267 ,  H01M50/209 ,  H01M50/51 ,  H01M4/583 ,  H01M10/04

Abstract: The present application relates to a battery module, including a first-type battery cell and a second-type battery cell electrically connected at least in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, the first-type battery cell includes N first battery cell(s), the second-type battery cell includes M second battery cell(s); the first battery cell includes a first negative electrode plate, the second battery cell includes a second negative electrode plate, a ratio of a conductivity of an electrolyte solution (25° C.) of the first battery cell to a coating mass per unit area of the first negative electrode plate is denoted as Ml, and a ratio of a conductivity of an electrolyte solution (25° C.) of the second battery cell to a coating mass per unit area of the second negative electrode plate is denoted as M2, M1>M2, and 0.08≤M1≤11, 0.03≤M2≤4.62.

公开(公告)号：US20220311087A1

公开(公告)日：2022-09-29

申请号：US17842114

申请日：2022-06-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wanqiu MENG ,  Qian LIU ,  Yonghuang YE

IPC: H01M50/375 ,  H01M50/15 ,  H01M50/342

Abstract: Embodiments of the application provide a cover assembly, a battery cell, a battery, an electric device, a method and an apparatus. The cover assembly includes a cover plate, a fixing member, a breathable film and a support, the cover plate being provided with a first through hole, the fixing member being used for being connected to the cover plate and provided with a second through hole, where the second through hole is configured to be in gas communication with the first through hole, the breathable film being connected to the fixing member and used for covering the second through hole, the second through hole being filled with the support, and the support being connected to the fixing member. According to the application, a release requirement of gas in the battery cell can be met, and meanwhile, safety performance of the battery cell can be improved.

公开(公告)号：US20210336262A1

公开(公告)日：2021-10-28

申请号：US17371207

申请日：2021-07-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Wenguang Lin ,  Chengdu Liang ,  Yongsheng Guo

IPC: H01M4/525 ,  H01M10/054 ,  H01M4/505

Abstract: The present application discloses a positive electrode active material and its preparation method, a sodium ion battery and an apparatus containing the sodium ion battery. The positive electrode active material satisfies a chemical formula of Na1-xCuhFekMnlMmO2-y wherein M is one or more selected from Li, Be, B, Mg, Al, K, Ca, Ti, Co, Ni, Zn, Ga, Sr, Y, Nb, Mo, In, Sn, and Ba, 0

公开(公告)号：US20240372076A1

公开(公告)日：2024-11-07

申请号：US18776053

申请日：2024-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu XU ,  Yao JIANG ,  Qian LIU ,  Yonghuang YE

IPC: H01M4/36 ,  C01B25/45 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M4/58

Abstract: This application provides a mixed positive electrode active material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a first positive electrode active material and a second positive electrode active material, where the first positive electrode active material includes a compound LiNibCodMneMfO2, and the second positive electrode active material includes a compound LiaAxMn1-yByP1-zC2O4-nDn. In this application, with the first positive electrode active material and the second positive electrode active material mixed, the cycling capacity retention rate of the secondary battery is improved, the cycle life of the secondary battery is extended, and the safety of the secondary battery is improved.