公开(公告)号：US20240178365A1

公开(公告)日：2024-05-30

申请号：US18420790

申请日：2024-01-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu Xu ,  Jianfu He ,  Chenxu Luo ,  Qian Liu ,  Yonghuang Ye ,  Yibo Shang

IPC: H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M4/131 ,  H01M4/485 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided is a positive electrode plate, a secondary battery, and a powered device. The positive electrode plate may be a positive electrode plate of a wound cell, and includes a waist region provided close to a waist portion and an end region provided away from the waist portion. The waist region is provided with a first positive electrode film, and the end region is provided with a second positive electrode film. The positive electrode plate may be a positive electrode plate for a laminated cell, which includes a central region provided close to a center and an edge region provided away from the center. The central region is provided with a first positive electrode film, and the edge region is provided with a second positive electrode film.

公开(公告)号：US20230112421A1

公开(公告)日：2023-04-13

申请号：US17933855

申请日：2022-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tao Zhang ,  Jianfu He ,  Qian Liu ,  Xueyang Sun ,  Yonghuang Ye

IPC: H01M4/13

Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies 0

公开(公告)号：US20230344011A1

公开(公告)日：2023-10-26

申请号：US17935934

申请日：2022-09-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tao Zhang ,  Jianfu He ,  Qian Liu ,  Yonghuang Ye

IPC: H01M50/148 ,  H01M50/204 ,  H01M10/0585

CPC classification number: H01M10/0585 ,  H01M50/148 ,  H01M50/204 ,  H01M50/102

Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies CAP1=CAP2, in which CAP1 represents capacity of the first positive electrode film layer in Ah, CAP2 represents capacity of the second positive electrode film layer in Ah, and the electrode assembly satisfies |R4/R3-R2/R1|>0, in which R1 represents resistance of the first positive electrode film layer in Ω, R2 represents resistance of the second positive electrode film layer in Ω, R3 represents resistance of the first negative electrode film layer in mΩ and R4 represents resistance of the second negative film layer in mΩ. The present applicant may extend the cycle life of the secondary battery.

公开(公告)号：US20240170726A1

公开(公告)日：2024-05-23

申请号：US18426355

申请日：2024-01-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Huiling Chen ,  Changlong Han ,  Bin Jiang ,  Qian Liu ,  Jianfu He ,  Jingxuan Sun ,  Lei Huang

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028

Abstract: This application provides a non-aqueous electrolyte and a preparation method thereof, and a secondary battery and an electric apparatus containing the same. The non-aqueous electrolyte contains the non-aqueous solvent and lithium ions, first cations, and first anions dissolved therein, where the first cation is a metal cation Men+ other than the lithium ion, n representing a chemical valence of the metal cation; the first anion is a tetrafluoroborate anion BF4−; mass concentration of the first cations in the non-aqueous electrolyte is D1 ppm, and mass concentration of the first anions in the non-aqueous electrolyte is D2 ppm, both based on total mass of the non-aqueous electrolyte; and the non-aqueous electrolyte satisfies that D1 is 0.1 to 1250 and that D1/D2 is 0.02 to 2. The non-aqueous electrolyte in this application enables the secondary battery to have good cycling performance, safety performance, and kinetic performance.

公开(公告)号：US20240047813A1

公开(公告)日：2024-02-08

申请号：US18489834

申请日：2023-10-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu He ,  Qian Liu ,  Yonghuang Ye ,  Quanguo Li ,  Xiaofu Xu ,  Haizu Jin

IPC: H01M50/267 ,  H01M50/213 ,  H01M10/643 ,  H01M50/14

CPC classification number: H01M50/267 ,  H01M50/213 ,  H01M10/643 ,  H01M50/14 ,  H01M2220/20 ,  H01M10/625

Abstract: Provided are a battery pack and an electric apparatus. The battery pack of this application includes multiple battery cells arranged repeatedly in a unit structure, where the unit structure includes N1 first battery cells and N2 second battery cells, the N1 first battery cells surrounding the N2 second battery cells, N1 and N2 being integers greater than or equal to 1, and N1>N2. Given that the first battery cell has a volumetric energy density denoted as D1 and a direct current impedance denoted as R1, and that the second battery cell has a volumetric energy density denoted as D2 and a direct current impedance denoted as R2, the unit structure has a thermal stability factor μ=(D1×R1)/(D2×R2) satisfying 0.2≤μ≤1.

公开(公告)号：US11865943B2

公开(公告)日：2024-01-09

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: H02J7/00 ,  B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485 ,  H01M10/44

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

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：US11855297B2

公开(公告)日：2023-12-26

申请号：US18357389

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu He ,  Yonghuang Ye ,  Qian Liu ,  Jingxuan Sun ,  Xiaofu Xu ,  Xueyang Sun ,  Haizu Jin

IPC: H01M50/242

CPC classification number: H01M50/242 ,  H01M2220/20

Abstract: This application discloses a battery unit. The battery unit includes a housing, at least one cell, and a buffer. The at least one cell is accommodated in the housing, the buffer is disposed corresponding to a side wall of the cell, and the buffer is provided with an accommodating cavity. A periphery of the accommodating cavity includes at least one packaging structure, the packaging structure includes at least one level of packaging region with a predetermined length. When pressure in the accommodating cavity exceeds packaging strength of the packaging structure, the packaging region is opened to form a buffer space that communicates with the accommodating cavity, reducing influence caused by swelling of the cell.