公开(公告)号：US20210119301A1

公开(公告)日：2021-04-22

申请号：US17133370

申请日：2020-12-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xianchun ZHU ,  Chao ZENG ,  Hua CAO

IPC: H01M50/383 ,  H01M10/42 ,  H01M50/249 ,  H01M50/204 ,  H01M50/375 ,  H01M50/581 ,  H01M10/48

Abstract: The present application relates to a battery pack. The battery pack comprises: two or more battery modules, each of the battery modules comprising a plurality of battery cells which are stacked in sequence, wherein each of the battery cells is provided with an explosion-proof valve; the battery pack further comprising a thermal alarm device and a battery management system, wherein the thermal alarm device is arranged corresponding to the explosion-proof valve; the thermal alarm device and the battery management system are connected to form a circuit; and a break of the circuit can be caused when the explosion-proof valve is exploded. The present application provides the thermal alarm device, and when thermal runaway occurs in the battery module, a circuit break is formed between the thermal alarm device and the battery management system, thus the thermal runaway status of the battery pack can be accurately reflected.

公开(公告)号：US20200350636A1

公开(公告)日：2020-11-05

申请号：US16691940

申请日：2019-11-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xianchun ZHU ,  Chao ZENG ,  Hua CAO ,  Chong WANG

IPC: H01M10/42 ,  H01M2/12 ,  H01M10/48

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a battery assembly, including a plurality of battery cells arranged in an array, wherein each of the battery cells includes a vent; a circuit board, including a plurality of sampling terminals connected to the battery cells and being capable of collecting electrical parameters and/or temperature parameters of the battery cells; and a thermal cable, located between the battery assembly and the circuit board and fixedly coupled to the circuit board, wherein a thermal circuit is formed inside the thermal cable, and the thermal circuit can provide a prompt signal indicating a bursting of the vent of any of the battery cells. When a thermal runaway of any of the battery cells occur, the corresponding vent bursts to heat the thermal cable, and the thermal cable can quickly sense a temperature change.

公开(公告)号：US20240380048A1

公开(公告)日：2024-11-14

申请号：US18782535

申请日：2024-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guize CHEN ,  Cong BAO ,  Chao ZENG

IPC: H01M50/242 ,  H01M50/262 ,  H01M50/505

Abstract: This application relates to a battery box, a battery, and an electric apparatus. A first end plate, a second end plate, and a first middle frame jointly enclose a semi-accommodating space with an opening at one end, and a height of the semi-accommodating space in an entry direction of a battery module entering the space is smaller than a height of the battery module in the direction, that is, the semi-accommodating space is shallower than the battery module. In this way, when the battery module is placed into the semi-accommodating space, it is less likely to fall and cause damage to the battery module. After the battery module is safely placed into the semi-accommodating space, a second middle frame is spliced with the first middle frame to seal the semi-accommodating space, thereby encapsulating the battery module.

公开(公告)号：US20240235220A1

公开(公告)日：2024-07-11

申请号：US18611754

申请日：2024-03-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhiqiang LI ,  Chao ZENG ,  Shaohua LUO ,  Shengwei WANG

IPC: H02J7/00 ,  H01M10/44

CPC classification number: H02J7/0024 ,  H01M10/441 ,  H01M10/443 ,  H02J7/0047 ,  H02J7/0063 ,  H02J7/007182 ,  H02J7/007194

Abstract: The present disclosure discloses a charging method and apparatus, an electronic device, and a storage medium. The method includes: obtaining charging parameters of each battery module in a battery pack in a current charging mode, wherein the battery pack has a plurality of battery modules, and the current charging mode includes a series charging mode; and after determining, based on the charging parameters of each battery module, that any two battery modules meet a charging switching condition, controlling the plurality of battery modules to switch from the series charging mode to a parallel charging mode.

公开(公告)号：US20210242530A1

公开(公告)日：2021-08-05

申请号：US16970180

申请日：2019-09-23

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xianchun ZHU ,  Chao ZENG ,  Hua CAO ,  Chong WANG

IPC: H01M50/383 ,  H01M50/176 ,  H01M50/143 ,  H01M50/581 ,  H01M10/42

Abstract: This disclosure provides a battery module and a battery pack. The battery module includes: a battery set including a plurality of batteries arranged in an array, each of the batteries includes an explosion-proof valve; a cover plate disposed on the battery set; and a thermosensitive assembly disposed between the battery set and the cover plate, the thermosensitive assembly being connected with the cover plate, the thermosensitive assembly including a thermosensitive wire, and thermosensitive wire can provide a prompt signal indicating that the explosion-proof valve of the battery is burst. The battery module according to embodiments of the present disclosure can accurately and effectively transmit the information regarding thermal runaway occurring in the battery to the outside, such that the battery module has a performance of alerting the thermal runaway.

公开(公告)号：US20240266633A1

公开(公告)日：2024-08-08

申请号：US18637019

申请日：2024-04-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chao ZENG ,  Zhiqiang Li ,  Qingrong CHEN ,  Shengwei WANG

IPC: H01M10/654 ,  H01M10/04 ,  H01M10/617 ,  H01M50/102

CPC classification number: H01M10/654 ,  H01M10/617 ,  H01M50/102 ,  H01M10/0431

Abstract: This application relates to a bottom support for battery cell, a battery cell, a battery, and an electric device. The bottom support is configured for supporting a jelly roll, and the bottom support includes a bottom plate, where the bottom plate includes a central region and a peripheral region surrounding the central region. The bottom plate is constructed to form at least one recessed group, and a recessed area increases gradually among the recessed group(s) in a direction from the peripheral region to the central region of the bottom plate. The bottom support for battery cell, the battery cell, the battery, and the electric device provided in this application reduce the probability of thermal runaway in the battery cell.

公开(公告)号：US20210111443A1

公开(公告)日：2021-04-15

申请号：US17130972

申请日：2020-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiao WANG ,  Chao ZENG ,  Jia XU ,  Zhimin DAN ,  Yizhen HOU ,  Wei ZHANG ,  Guoliang HU

IPC: H01M10/48 ,  B60L58/24 ,  H01M10/42

Abstract: This application provides a method, an apparatus, a system for detecting battery thermal runaway, and a battery management unit. The method includes: obtaining an output signal of an air pressure sensor located in a battery pack, and obtaining parameter information of the battery pack; determining state information of the air pressure sensor based on the output signal of the air pressure sensor; and generating an alarm signal indicating occurrence of thermal runaway in the battery pack based on the state information of the air pressure sensor and the parameter information of the battery pack. In this application, the thermal runaway detection for the battery pack may be implemented by considering parameter information of both the air pressure sensor and the battery pack, improving the reliability of the thermal runaway detection for the battery pack, reducing the probability of false positives and false negatives, and improving driving safety.

公开(公告)号：US20200350770A1

公开(公告)日：2020-11-05

申请号：US16555006

申请日：2019-08-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin DAN ,  Chao ZENG ,  Xiao WANG ,  Jia XU ,  Yizhen HOU ,  Wei ZHANG ,  Guoliang HU

IPC: H02J7/00 ,  G01R31/382 ,  G01R31/364

Abstract: The present disclosure provides a thermal runaway detection circuit and a method, which is directed to field of batteries. The circuit includes: a sensing module including a terminating resistor; a detection module including a first voltage dividing resistor set and a second voltage dividing resistor set; and a processing module connected to the detection module, wherein the processing module is configured to obtain thermal runaway detection data, and determine whether thermal runaway occurs in the battery pack based on the thermal runaway detection data. The thermal runaway detection data includes first sampled data and second sampled data. The technical solutions in the present disclosure can improve safety of the battery pack.