公开(公告)号：US20230046770A1

公开(公告)日：2023-02-16

申请号：US17980591

申请日：2022-11-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu XU ,  Yonghuang YE ,  Qian LIU ,  Jianfu HE ,  Xueyang SUN ,  Jingxuan SUN ,  Haizu JIN

IPC: H01M50/609 ,  H01M50/102 ,  H01M50/204 ,  H01M50/673

Abstract: The present application discloses a battery cell, a battery and a power consumption apparatus. The battery cell may include: a housing filled with an electrolyte inside; at least one core assembly arranged in the housing and at least one closed liquid bladder holding the electrolyte, the liquid bladder being arranged in the housing, and at least being provided corresponding to a side wall of the core assembly; at least one weakened structure being provided on the liquid bladder. Under a condition that a pressure in the liquid bladder reaches a threshold value, the electrolyte in the liquid bladder may break through the weakened structure and flow out of the liquid bladder.

公开(公告)号：US20220399607A1

公开(公告)日：2022-12-15

申请号：US17887220

申请日：2022-08-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/267 ,  H01M50/204 ,  H01M50/51 ,  H01M4/583 ,  H01M4/485 ,  H01M4/38 ,  H01M50/249

Abstract: The present application relates to a battery module including a first-type battery cell and a second-type battery cell at least connected in series, where 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), and the second-type battery cell includes M second battery cell(s), where N and M are positive integers; and when a battery state of health (SOH) of a first battery cell is the same as an SOH of a second battery cell, and a state of charge (SOC) of the first battery cell is the same as an SOC of the second battery cell, a ratio of a total charge capacity of a first negative electrode sheet of the first battery cell to a total charge capacity of a second negative electrode sheet of the second battery cell is 0.8 to 1.2.

公开(公告)号：US20220393292A1

公开(公告)日：2022-12-08

申请号：US17889422

申请日：2022-08-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Chengdu Liang ,  Xiaofu Xu ,  Quanguo Li ,  Yonghuang Ye ,  Haizu Jin

IPC: H01M50/267 ,  H01M50/204 ,  H01M50/51 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505

Abstract: The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first and second type of battery cells are battery cells of different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.

公开(公告)号：US20220393227A1

公开(公告)日：2022-12-08

申请号：US17887800

申请日：2022-08-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qian LIU ,  Yonghuang YE ,  Haizu JIN ,  Chengdu LIANG ,  Quanguo LI

IPC: H01M10/058 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M50/51

Abstract: The present application relates to a battery module, and the battery module includes a first-type battery cell and a second-type battery cell at least connected 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), N and M are positive integers, a specific surface area of a positive active substance of the first battery cell is S1, a specific surface area of a positive active substance of the second battery cell is S2, and S1 and S2 satisfy: 1≤S1/S2≤60.

公开(公告)号：US20210359335A1

公开(公告)日：2021-11-18

申请号：US17391064

申请日：2021-08-02

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/054 ,  H01M4/485 ,  H01M4/583 ,  H01M4/58 ,  H01M4/04 ,  H01M4/64

Abstract: The present application discloses a sodium-ion battery and an apparatus comprising the same. The sodium-ion battery comprises a positive electrode plate and a negative electrode plate; the positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer comprises a positive electrode active material; the negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer comprises a negative electrode active material, and the negative electrode active material is hard carbon; wherein a ratio of a median particle size A of the positive electrode active material to a median particle size B of the negative electrode active material satisfies 0.05≤A/B≤3.

公开(公告)号：US20240258602A1

公开(公告)日：2024-08-01

申请号：US18604554

申请日：2024-03-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu HE ,  Qian LIU ,  Yonghuang YE ,  Quanguo LI ,  Xiaofu XU ,  Haizu JIN

IPC: H01M10/617 ,  H01M10/625 ,  H01M10/651 ,  H01M10/658 ,  H01M50/289

CPC classification number: H01M10/617 ,  H01M10/625 ,  H01M10/651 ,  H01M10/658 ,  H01M50/289 ,  H01M2220/20

Abstract: The present application provides a battery pack and a power consuming device. The battery pack includes a battery pack case; and first battery cells and second battery cells that are accommodated in the battery pack case, wherein compared with the second battery cells, the first battery cells are arranged at positions where heat exchange with surroundings is more likely to occur in the battery pack case. It is assumed that the first battery cells each have a capacity C1 and a direct-current impedance R1, wherein X1=C1*R1, the second battery cells each have a capacity C2 and a direct-current impedance R2, wherein X2=C2*R2, and X1 and X2 satisfy 1.1≤X1/X2≤2.0.

公开(公告)号：US20240162544A1

公开(公告)日：2024-05-16

申请号：US18423607

申请日：2024-01-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Qian LIU ,  Jianfu HE ,  Xiaofu XU

IPC: H01M50/209 ,  H01M50/264

CPC classification number: H01M50/209 ,  H01M50/264

Abstract: A battery module includes at least two rows of battery cells stacked together along the width direction of the battery cells, the at least two rows of battery cells comprising a first row of battery cells and a second row of battery cells that are adjacent to each other. The first row of battery cells and the second row of battery cells include a plurality of battery cells in total, where some of the battery cells in the plurality of battery cells have different lengths from the remaining battery cells. Along the width direction of the battery cells, a centerline along the length direction of at least one battery cell in the first row of battery cells is not collinear with a centerline along the length direction of at least one battery cell in the second row of battery cells.

公开(公告)号：US20240145785A1

公开(公告)日：2024-05-02

申请号：US18409809

申请日：2024-01-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu HE ,  Qian LIU ,  Yonghuang YE ,  Haizu JIN ,  Tao ZHANG ,  Xueyang SUN

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M10/647 ,  H01M50/249

CPC classification number: H01M10/0587 ,  H01M10/0525 ,  H01M10/647 ,  H01M50/249 ,  H01M2220/20

Abstract: This application provides an electrode assembly, a battery cell, a battery, and an electric apparatus, and pertains to the field of battery technologies. The electrode assembly may include a negative electrode plate and a positive electrode plate. The negative electrode plate may include a negative electrode active substance layer, and a first electrolyte storage trough may be disposed on the negative electrode active substance layer. The positive electrode plate may include a positive electrode active substance layer, the positive electrode active substance layer and the negative electrode active substance layer may be disposed opposite each other in a first direction, and a second electrolyte storage trough may be disposed on the positive electrode active substance layer, the second electrolyte storage trough and the first electrolyte storage trough being disposed opposite each other in the first direction.

公开(公告)号：US20230369701A1

公开(公告)日：2023-11-16

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.

公开(公告)号：US20230307720A1

公开(公告)日：2023-09-28

申请号：US18327674

申请日：2023-06-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qian LIU ,  Quanguo LI ,  Yonghuang YE ,  Haizu JIN

IPC: H01M10/42 ,  H01M50/267 ,  H01M10/0585 ,  H01M50/471 ,  H01M4/80

CPC classification number: H01M10/4207 ,  H01M50/267 ,  H01M10/0585 ,  H01M50/471 ,  H01M4/80 ,  H01M2004/027

Abstract: A hybrid series battery module includes a first-type battery cell including a first negative electrode plate and a second-type battery cell including a second negative electrode plate. Energy density of the first-type battery cell is less than energy density of the second-type battery cell. A first interlayer spacing of a negative electrode active material of the first negative electrode plate is greater than a second interlayer spacing of a negative electrode active material of the second negative electrode plate. In a state of charge of 0%, a ratio of the first interlayer spacing to the second interlayer spacing falls within a range of greater than or equal to 1.005 and less than or equal to 1.600.