公开(公告)号：US20200225275A1

公开(公告)日：2020-07-16

申请号：US16577350

申请日：2019-09-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Baohai DU ,  Guoxiu WU ,  Weiqiang LI ,  Qiandeng LI

IPC: G01R31/12 ,  G01R31/3835 ,  G01R31/00

Abstract: The present disclosure provides an insulation detection circuit, a detection method and a battery management system. The insulation detection circuit includes an isolated power module, first positive and negative sampling modules, second positive and negative sampling modules, and a processor. A first end of the second positive sampling module is connected to a positive electrode of the isolated power module and a second end of the positive switch module, a second end of the second positive sampling module is connected to a second reference voltage terminal; a first end of the second negative sampling module is connected to the second reference voltage terminal, a second end of the second negative sampling module is respectively connected to a negative electrode of the isolated power module and a second end of the negative switch module; and the processor is connected to sampling points.

公开(公告)号：US20220018885A1

公开(公告)日：2022-01-20

申请号：US17491110

申请日：2021-09-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yanhui FU ,  Baohai DU ,  Guoxiu WU

IPC: G01R31/00 ,  B60L3/00 ,  G01R31/52

Abstract: Embodiments of this application relate to the technical field of electronics, and disclose an electrical control device detection circuit, a detection method, and an electric vehicle. In some embodiments of this application, the detection circuit is configured to detect a drive circuit of the electrical control device. The drive circuit includes a high-side switch unit. The detection circuit includes a first detection module and a control module. A first end of the first detection module is connected to a first end of the electrical control device. A second end of the first detection module is connected to a second end of the electrical control device. A third end of the first detection module is connected to the control module.

公开(公告)号：US20200088801A1

公开(公告)日：2020-03-19

申请号：US16548987

申请日：2019-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Sixia MENG ,  Guoxiu WU ,  Qiandeng LI

IPC: G01R31/382 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48

Abstract: Disclosed is a battery pack temperature detection system, comprising: a battery pack disposed with a plurality of temperature monitoring points; a plurality of sampling circuits, wherein each temperature monitoring point is disposed with at least two of the plurality of sampling circuits, and the at least two of the plurality of sampling circuits disposed for one temperature monitoring point are different sampling circuits; and a control module configured to acquire temperature data of each temperature monitoring point by each of the disposed sampling circuits, and determine a current temperature of the battery pack according to the temperature data to determine whether the temperature of the battery pack exceeds a preset value.

公开(公告)号：US20210107377A1

公开(公告)日：2021-04-15

申请号：US17130768

申请日：2020-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianwei ZHUO ,  Zhongliang GUO ,  Guoxiu WU ,  Qiandeng LI

IPC: B60L58/18 ,  G01R31/3835 ,  B60L58/12 ,  H01M10/42 ,  H01M10/48

Abstract: Embodiments of this application disclose a rechargeable battery monitoring system, a battery pack, and an electric vehicle. The rechargeable battery monitoring system includes multiple CMCs, a BMU, and a first bus. Each CMC is connected to the first bus and configured to monitor at least one battery module of a battery pack. The BMU is connected to the first bus and configured to communicate with at least one CMC. The rechargeable battery monitoring system further includes multiple pull-up and/or pull-down modules disposed on a communication path between two adjacent CMCs as part of the first bus. This rechargeable battery monitoring system can stabilize a level on the communication path between the two adjacent CMCs, mitigate an impact caused by external interference onto communication, and improve communication quality.

公开(公告)号：US20200088799A1

公开(公告)日：2020-03-19

申请号：US16357563

申请日：2019-03-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Kai WU ,  Guoxiu WU ,  Shushuai HU ,  Qiandeng LI ,  Yanhui FU

IPC: G01R31/36 ,  H01M2/10 ,  H01M10/42 ,  G01R31/382

Abstract: The present disclosure relates to a sampling assembly and a battery pack. The assembly comprises: a circuit board comprising a sampling unit; a first detector comprising a first and second connecting ends arranged at interval, wherein the first detector is connected to the circuit board via the first and second connecting ends to transmit information on first voltage between the first and second connecting ends to the circuit board, and the first detector is connectable in series to and between the two terminals to be detected; and a second detector located in a magnetic field generated by current flowing through the first detector and can generate information on second voltage according to the magnetic field, wherein the second detector comprises an output terminal and is connectable to the circuit board via the output terminal to transmit the information on second voltage to the sampling unit.