公开(公告)号：US11353515B2

公开(公告)日：2022-06-07

申请号：US16559644

申请日：2019-09-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiao Wang ,  Chao Zeng ,  Jia Xu ,  Zhimin Dan ,  Yizhen Hou ,  Wei Zhang ,  Guoliang Hu

IPC: G01R31/392 ,  G01R31/3842 ,  G01K3/00 ,  G01K3/10 ,  G01K13/00 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00

Abstract: The disclosure provides a thermal runaway detection circuit and method, and relates to batteries. The thermal runaway detection circuit includes: a sensing module including a sensing cable; a detection module connected to the sensing cable and including at least one set of voltage dividing resistors; 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, wherein the thermal runaway detection data includes battery pack data and sampled data collected from sampling points, and the sampling points are disposed between the two connected voltage dividing resistor sets. The technical solutions in the present disclosure can improve safety of the battery pack.

公开(公告)号：US20230029931A1

公开(公告)日：2023-02-02

申请号：US17566696

申请日：2021-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Longzhen Lin ,  Yu Yan ,  Xiao Wang

IPC: B60L55/00 ,  H04L67/12 ,  B60L53/68

Abstract: The application provides a method, a charging-discharging device, a cloud server, a system and a medium for charging-discharging interaction, which belong to the fields of electric power technologies. The method for charging-discharging interaction includes: the charging-discharging device transmits a vehicle-to-grid V2G function confirmation message to a battery management system of a target vehicle; when no V2G function feedback message fed back by the battery management system is received within a preset period of time after transmitting the V2G function confirmation message, the charging-discharging device transmits a first indication message to a cloud server to indicate that the target vehicle is V2G-disabled; in response to a non-V2G charging instruction received from the cloud server, the charging-discharging device performs a non-V2G charging for the target vehicle. The availability of the charging-discharging device can be improved according to embodiments of the present application.

公开(公告)号：US11961955B2

公开(公告)日：2024-04-16

申请号：US17712087

申请日：2022-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yiruo Wang ,  Zhiyang Wu ,  Xiao Wang ,  Chengcheng Jiang ,  Chao Xie ,  Liangzhen Dai

IPC: H01M10/04 ,  H01M10/0525 ,  H01M50/10 ,  H01M50/103

CPC classification number: H01M10/0409 ,  H01M10/0431 ,  H01M10/0468 ,  H01M50/103

Abstract: The present application relates to a method and an apparatus for manufacturing an electrode assembly of a secondary battery. Embodiments of the present application propose a method for manufacturing an electrode assembly of a secondary battery, the method comprising joining a positive electrode plate and a first separator to form a positive electrode composite plate body; joining a negative electrode plate and a second separator to form a negative electrode composite plate body; winding the positive electrode composite plate body and the negative electrode composite plate body together to form an electrode assembly, wherein the positive electrode plate and the negative electrode plate are disposed to isolate from each other by the first separator and the second separator.

公开(公告)号：US12043139B2

公开(公告)日：2024-07-23

申请号：US17566718

申请日：2021-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiao Wang ,  Zhimin Dan

IPC: B60L58/12 ,  B60L53/22 ,  H01M10/42

CPC classification number: B60L58/12 ,  B60L53/22 ,  H01M10/425 ,  B60L2210/10 ,  B60L2240/547 ,  H01M2010/4271 ,  H01M2220/20

Abstract: The embodiments of the present application provide a low-voltage power transmission system, a DCDC converter and a control method, a device and a medium, relating to the field of battery power. The control method includes: acquiring a charging signal; acquiring a vehicle start signal; acquiring an enabling signal; when each of the charging signal, the vehicle activating start signal, and the enabling signal is at a low level, and no communication message sent by a battery management system (BMS) is received, determining that a vehicle is in a power-off state and enters a sleep mode; when a duration of the sleep mode reaches a preset duration, performing self-awakening, and outputting, to the BMS, an awakening signal for awakening the BMS and making the BMS enter a working mode.

公开(公告)号：US12027680B2

公开(公告)日：2024-07-02

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 ,  H01M50/569

CPC classification number: H01M10/486 ,  B60L58/24 ,  H01M10/4257 ,  B60L2250/10 ,  H01M2010/4271 ,  H01M50/569

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：US11929464B2

公开(公告)日：2024-03-12

申请号：US16964324

申请日：2019-10-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yiruo Wang ,  Xiaowei Zhang ,  Hongwen Chang ,  Xiao Wang ,  Peichao Wang ,  Xi Chen

IPC: H01M10/0587 ,  B65H23/26 ,  H01M4/04

CPC classification number: H01M10/0587 ,  B65H23/26 ,  H01M4/04 ,  B65H2601/2531 ,  B65H2601/525

Abstract: The present disclosure relates to a conveying roller for conveying a cell pole piece, the cell pole piece comprising a main body and pole tabs, the main body comprising a bearing area and a transition area, each of the pole tabs comprising a root portion connected to the transition area, a middle section and a top portion, and the conveying roller comprising: a central axis, a first end face and a second end face disposed opposite to each other along the central axis, a transmission portion and an avoidance position provided between the first end face and the second end face, wherein the transmission portion is rotatable around the central axis, the bearing area is contactable with the transmission portion, so that the transmission portion applies a transmission friction force to the cell pole piece, and the avoidance position is capable of avoiding the transition area and the pole tabs.

公开(公告)号：US11926242B2

公开(公告)日：2024-03-12

申请号：US17566696

申请日：2021-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Longzhen Lin ,  Yu Yan ,  Xiao Wang

IPC: B60L55/00 ,  B60L53/68 ,  H04L67/12

CPC classification number: B60L55/00 ,  B60L53/68 ,  H04L67/12 ,  Y04S10/126

Abstract: The application provides a method, a charging-discharging device, a cloud server, a system and a medium for charging-discharging interaction, which belong to the fields of electric power technologies. The method for charging-discharging interaction includes: the charging-discharging device transmits a vehicle-to-grid V2G function confirmation message to a battery management system of a target vehicle; when no V2G function feedback message fed back by the battery management system is received within a preset period of time after transmitting the V2G function confirmation message, the charging-discharging device transmits a first indication message to a cloud server to indicate that the target vehicle is V2G-disabled; in response to a non-V2G charging instruction received from the cloud server, the charging-discharging device performs a non-V2G charging for the target vehicle. The availability of the charging-discharging device can be improved according to embodiments of the present application.

公开(公告)号：US11476492B2

公开(公告)日：2022-10-18

申请号：US17058463

申请日：2020-06-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Yiruo Wang ,  Chao Yang ,  Minghao Tang ,  Xiao Wang ,  Jiang Lin ,  Chuangchuang Xiang

IPC: H01M10/04

Abstract: The present application relates to a device for preparing an electrode assembly and a preparation method of the electrode assembly. Wherein the device for preparing the electrode assembly includes: a winding assembly; a plurality of first electrode plate unwinding apparatuses, configured to provide a plurality of first electrode plates for the winding assembly; and at least one second electrode plate unwinding apparatus, configured to provide at least one second electrode plate for the winding assembly, wherein a polarity of the first electrode plate is opposite to a polarity of the second electrode plate; and wherein the winding assembly is configured to wind the plurality of first electrode plates and the at least one second electrode plate, to form an electrode assembly. The present application is used for improving winding efficiency of the electrode assembly.

公开(公告)号：US20220223897A1

公开(公告)日：2022-07-14

申请号：US17712087

申请日：2022-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yiruo Wang ,  Zhiyang Wu ,  Xiao Wang ,  Chengcheng Jiang ,  Chao Xie ,  Liangzhen Dai

IPC: H01M10/04

Abstract: The present application relates to a method and an apparatus for manufacturing an electrode assembly of a secondary battery. Embodiments of the present application propose a method for manufacturing an electrode assembly of a secondary battery, the method comprising joining a positive electrode plate and a first separator to form a positive electrode composite plate body; joining a negative electrode plate and a second separator to form a negative electrode composite plate body; winding the positive electrode composite plate body and the negative electrode composite plate body together to form an electrode assembly, wherein the positive electrode plate and the negative electrode plate are disposed to isolate from each other by the first separator and the second separator.

公开(公告)号：US10985575B2

公开(公告)日：2021-04-20

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 ,  G01K7/02

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.