Control Scheme of PTC Electric Heater
Air conditioning control framework
①The command input is completed by the air conditioner panel.
②The air conditioner panel sends the user's operation commands to the controller through CAN communication or ON/OFF PWM.
③After receiving the command signal, the plumbing PTC controller turns on the PTC in PWM mode according to the power requirements.
Design advantages:
①It adopts 4-channel PWM control mode, the bus impulse current is small, and the requirement for the relay in the whole vehicle loop is low.
②PWM mode control enables continuous power adjustment.
③The CAN communication mode can report the working status of the controller, which is convenient for the control and monitoring of the whole vehicle.
Block diagram of control principle
