Contemporary Amperex Technology Co., Ltd.

Guoxiu Wu

Qiandeng Li

Baohai Du

Yanhui Fu

Kai Wu

Yuqun Zeng

Changjian Liu

Jianwei Zhuo

Weiqiang Li

Zhongliang Guo

Sixia Meng

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.

Rechargeable battery monitoring system, battery pack and electric vehicle

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.

Electrical control device detection circuit, detection method, and electric vehicle

The application discloses a high voltage interlock circuit and a detection method thereof. The circuit comprises: a first switching module; a second switching module, comprising a first driving unit and a first switching unit arranged in isolation, the first switching unit is arranged between a second power supply and a second power ground; a third switching module, comprising a second driving unit and a second switching unit arranged in isolation; a fourth switching module, arranged between the fourth power supply and the first power ground; a controller. The embodiments of the application improve the accuracy of fault detection.

High voltage interlock circuit and detection method thereof

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.

Battery pack temperature detection system

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.

Growing community of inventors

Ningde, China

Guoxiu Wu