How does AC work on EV cars?

Exactly — in electric vehicles, the air conditioning (AC) system still works on the same refrigeration principles as in gasoline cars, but the power source and compressor design are different. Here’s a breakdown of how AC works in EVs:

 1. Power Source

• In internal combustion engine (ICE) cars, the compressor is belt-driven by the engine’s crankshaft.

• In EVs, the compressor has a dedicated electric motor powered directly by the high-voltage battery pack.

 2. Electric Compressor Components

• Built-in motor: Drives the compressor without needing engine rotation.

• Inverter: Converts DC (direct current) from the battery into AC (alternating current) for the motor.

• Oil separator: Separates compressor oil from refrigerant, ensuring efficient lubrication and cooling.

 3. Refrigerant Cycle (same principle as ICE cars)

1. Compression: The electric compressor pressurizes the refrigerant gas.

2. Condensation: Refrigerant passes through the condenser, releasing heat to the outside air and becoming liquid.

3. Expansion: Liquid refrigerant passes through an expansion valve, lowering its pressure and temperature.

4. Evaporation: The cold refrigerant absorbs heat from cabin air in the evaporator, cooling the interior.