A relay drive circuit

CN224366773UActive Publication Date: 2026-06-16ZHONGSHAN CHUNQIAO ELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN CHUNQIAO ELECTRONIC TECH CO LTD
Filing Date
2025-07-31
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

In the existing DC drive method, if the control chip crashes or malfunctions, the relay may conduct abnormally, leading to the burning of household appliances or safety accidents.

⚗Method used

The relay drive circuit uses pulse drive signals to drive the relay to work through the switching module according to the pulse drive signals, and stops output when the main control module crashes or freezes. Combined with signal amplification and filtering units, it ensures signal quality and reliability.

🎯Benefits of technology

To prevent household appliances from burning out or causing safety accidents, reduce the average power consumption of the relay coil, extend the service life of the relay, and enhance the anti-interference capability of the drive circuit.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a relay driving circuit, comprising a power module, a starting switch, a main control module and a switch module, the power module is used for providing stable working voltage for the system, the starting switch is used for outputting a starting signal of the relay, a control signal input end of the main control module is connected with the starting switch, the main control module is used for outputting a corresponding pulse driving signal according to the starting signal, an input end of the switch module is connected with a control signal output end of the main control module, an output end of the switch module is electrically connected with the relay, and the switch module is used for driving the relay to work according to the pulse driving signal. The switch module of the application can drive the relay to work according to the pulse driving signal, compared with the traditional relay directly driven by the switch, when the program of the main control module runs out of control or crashes, the pulse driving signal will stop outputting, thereby stopping driving the relay and making the load stop working, and further preventing the household appliance from burning or the occurrence of safety accidents.
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