供电电压检测电路、供电电路及车辆
By using a voltage divider circuit and a transistor as a controlled switch in the voltage detection circuit, the problem of power supply voltage detection under conditions without a reference voltage is solved. This simplifies the circuit structure, reduces costs, and improves detection accuracy. It is suitable for applications with high noise requirements and ensures the safe power supply of the controller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING CHANGAN AUTOMOBILE CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, voltage detection circuits require an additional reference voltage to realize the voltage detection function, but they are difficult to apply to real vehicle controllers in the absence of a reference voltage.
Two voltage divider circuits and transistors are used as controlled switches. The upper and lower limits of the supply voltage range are converted into the conduction voltage of the controlled switches. The conduction status of the controlled switches is used to determine whether the supply voltage is within the voltage range. Different voltage detection results are output through a third controlled switch.
This technology simplifies the circuit structure, reduces costs, and can be widely applied in scenarios with high noise requirements without the need for additional reference voltage settings. It also improves the accuracy of voltage detection and the safe power supply of the controller.
Smart Images
Figure CN224518835U_ABST