Since 2009, most electric vehicles have adopted PTC heaters. Electric vehicles (mainly passenger cars) launched in the past few years generally use PTC water heater systems or PTC air heater systems to achieve heating functions.
For pure electric vehicles, PTC air heating is generally used. This method only needs to replace the traditional car air-conditioning heater core with a PTC air heater, and supplemented with necessary control equipment, it can be directly applied to electric vehicles. .
Plug-in hybrid electric vehicles generally use PTC coolant heaters. In this method, the traditional car air-conditioning warm air core is connected in series with the PTC water heater. The liquid heated by the PTC water heater is supplied to the air-conditioning warm air core, and the air passes through it. The warm air core is heated to increase the temperature of the outlet air and then blown directly into the car to realize the heating function in the car.
However, PTC heating consumes a lot of power batteries in winter, seriously shortening the driving range of electric vehicles. Therefore, many current solutions use heat pump systems to achieve air conditioning and heating, and the thermal efficiency can be significantly improved.
Post time: Jun-04-2024
