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.

公开(公告)号：US20230207938A1

公开(公告)日：2023-06-29

申请号：US18117400

申请日：2023-03-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaocong OUYANG ,  Chenghua FU ,  Miaomiao DONG ,  Yonghuang YE ,  Changfeng BIE

IPC: H01M50/204 ,  H01M4/525 ,  H01M4/505 ,  H01M10/44

CPC classification number: H01M50/204 ,  H01M4/525 ,  H01M4/505 ,  H01M10/441 ,  H01M2220/20 ,  H01M2004/028

Abstract: A battery pack may comprise a first battery cell type and a second battery cell type, wherein the first battery cell type may include n first battery cells, and the second battery cell type may include m second battery cells, with n and m being each independently selected from an integer of 1 or more. The second battery cell may have an internal resistance less than that of the first battery cell, the difference in internal resistance between the first battery cell and the second battery cell may be ≥0.15 mohm; the percentage by number of the first battery cells in the battery cells comprised in the area A may be 20% to 100%; and the percentage by number of the second battery cells in the battery cells comprised in the area B may be 5% to 100%.

公开(公告)号：US20230170491A1

公开(公告)日：2023-06-01

申请号：US18069067

申请日：2022-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Songjun SHI ,  Qian LIU ,  Jun PENG ,  Fajun HUANG

IPC: H01M4/62 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/628 ,  H01M4/525 ,  H01M4/625 ,  H01M4/623 ,  H01M4/505 ,  H01M2004/021

Abstract: A positive electrode sheet includes a current collector including a coating region and a non-coating region, a resistance layer disposed on the current collector and including a conductive agent, a first binder, and a first positive electrode active material, and a positive electrode active material layer including a second positive electrode active material, a conductive agent, and a second binder. A resistance of the resistance layer is greater than a resistance of the positive electrode active material layer. In a cross section of the positive electrode sheet, a projection of at least a part of the positive electrode active material layer on the current collector and a projection of the resistance layer on the current collector do not overlap. A polarization parameter P of the positive electrode sheet is in a range of 0.4-65.0 and equals ((1−S)/S)·(R1/R2).

公开(公告)号：US20230163419A1

公开(公告)日：2023-05-25

申请号：US18094415

申请日：2023-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/474

CPC classification number: H01M50/474

Abstract: A battery cell may include a housing, an electrode assembly, and a first support structure. The housing may be provided with an accommodating cavity. The electrode assembly may be accommodated in the accommodating cavity, and include a main body portion and a thinned portion. At least one end of the main body portion in a first direction may be connected to the thinned portion. The first support structure may be arranged corresponding to the thinned portion, and configured to support the thinned portion when the electrode assembly is expanded.

公开(公告)号：US20230070894A1

公开(公告)日：2023-03-09

申请号：US17985813

申请日：2022-11-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/342 ,  H01M50/375 ,  H01M10/613 ,  H01M10/48

Abstract: This application relates to the field of energy storage technologies, and provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell and a second battery cell. The first battery cell includes a first pressure relief mechanism, the second battery cell includes a second pressure relief mechanism, an energy density of the first battery cell is greater than an energy density of the second battery cell, and an area of the first pressure relief mechanism is greater than an area of the second pressure relief mechanism. The apparatus includes the foregoing battery.

公开(公告)号：US20230066562A1

公开(公告)日：2023-03-02

申请号：US18054698

申请日：2022-11-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/578 ,  H01M50/209 ,  H01M50/581

Abstract: A battery includes a protective box provided with a guiding channel and a plurality of battery cells in the protective box. The plurality of battery cells include a first battery cell and a second battery cell adjacent to each other. The first battery cell includes a pressure relief end provided with a pressure relief mechanism. The pressure relief mechanism is configured to actuate release of internal pressure of the first battery cell in response to the internal pressure or an internal temperature of the first battery cell reaching a threshold. The guiding channel is configured to guide emissions released from the pressure relief mechanism. The pressure relief end of the first battery cell is staggered with one end of the second battery cell that is close to the pressure relief end, in a direction leaving the guiding channel.

公开(公告)号：US20230048691A1

公开(公告)日：2023-02-16

申请号：US17963368

申请日：2022-10-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/505 ,  H01M50/133 ,  H01M10/42 ,  H01M4/525 ,  H01M50/204

Abstract: The present application relates to a battery module, which includes a first type of battery cells and a second type of battery cells electrically connected in series. The first type of battery cells and the second type of battery cells are battery cells with different chemical systems. The first type of battery cells includes N first battery cells, and the second type of battery cells includes M second battery cells, where N and M are greater than or equal one. The present application also relates to a battery pack and an electric apparatus including the battery module, and method and device for manufacturing the battery module.

公开(公告)号：US20220115686A1

公开(公告)日：2022-04-14

申请号：US17556991

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/04 ,  H01M10/0525

Abstract: The present application provides a battery and an apparatus. The battery includes: a first-type battery cell group and a second-type battery cell group which are connected in series, wherein the first-type battery cell group is composed of multiple first-type batteries connected in parallel, and the second type battery cell group is composed of at least one second type battery cell connected in parallel; the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, and the volume energy density of the first-type battery cell is less than that of the second-type battery cell; and the capacity Cap1 of the first-type battery cell group is greater than the capacity Cap2 of the second-type battery cell group, in which Cap1 is the sum of the capacities of the corresponding first-type battery cells, and Cap2 is the sum of the capacities of the corresponding second-type battery cells.