PTC heater control system based on PWM control and automobile
By using an external PWM signal and adding a hysteresis comparator circuit in the PTC heater control system, the problems of large size and high cost of traditional PTC heater control systems are solved, realizing system miniaturization and cost reduction, while improving the reliability and service life of signal transmission.
CN224329594UActive Publication Date: 2026-06-05XIAOGAN HUAGONG GAOLI ELECTRONICS CO LTD
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Patent Information
- Application Number
- CN202520571060.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-06-05
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Technical Problem
Traditional high-voltage PTC heaters using relay control suffer from problems such as large size, high noise, and short lifespan. PTC heater systems based on PWM control are costly and still have a large overall size.
Method used
The PWM control signal is directly derived from an external system. By adding a hysteresis comparator circuit in the signal transmission path, the quality of the PWM control signal is improved, and the system size and cost are reduced.
Benefits of technology
It effectively reduces system size and cost while improving the reliability and quality of signal transmission, preventing false alarms, and extending service life.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides a PTC heater control system based on PWM control and an automobile, and belongs to the technical field of PTC heating, and the PTC heater control system comprises a PWM control signal receiving end capable of receiving a PWM control signal input from the outside of the system; the PTC driving circuit can output a corresponding PTC driving signal according to the received PWM control signal; the hysteresis comparator circuit is arranged between the PWM control signal receiving end and the PTC driving circuit, the inverted input end of the hysteresis comparator circuit is connected with the PWM control signal receiving end, and the output end of the hysteresis comparator circuit is connected with the PTC driving circuit. According to the technical scheme, the size of the PTC heater control system can be effectively reduced, and the cost is reduced.
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