What is the Role of Electric Compressors for New Energy Vehicles
The on-board compressor needs to provide the necessary high-pressure gas to the on-board air conditioner, pneumatic brake device, pneumatic power steering device, fuel cell, etc. during the operation of the car. The electric compressor is powered by a battery, and the controller controls the motor speed, thereby controlling the cooling capacity and adjusting the temperature. The high efficiency and high speed tolerance of the scroll compressor determine that it is suitable for use with a high-speed motor, and the speed of the motor is adjusted by the electronic control unit to improve the energy efficiency of the air conditioning system.
1. Automotive air-conditioning compressor market Compressor is a key component of air-conditioning and one of the decisive factors affecting the performance of air-conditioning. The air conditioner compressor is the heart of the refrigeration system, which acts as a suction, compression, and circulation pump. The compressor can be regarded as the interface between the low-pressure side and the high-pressure side of the refrigerant circuit. The refrigerant is sucked and compressed from the low-pressure side to increase its temperature and pressure, and then pumped into the high-pressure side for a reciprocating cycle.
Taking passenger cars as an example, most traditional passenger car air conditioning systems use mechanically driven open piston compressors or screw compressors.
Most new energy passenger car air conditioners use variable frequency horizontal scroll compressors. At present, most air conditioner manufacturers purchase imported horizontal variable frequency scroll compressors.
Passenger car air-conditioning compressors mainly include swash plate type, scroll type and rotary vane type. The swash plate compressor is the leading product of the reciprocating compressor. It has been developed for many years, and the technology is relatively mature. It is mainly used in large-displacement passenger cars and has high energy consumption.
The scroll compressor has no reciprocating motion, and has relatively high efficiency, low noise, and stable operation. Compared with the variable-displacement swash-plate compressor, the cost is lower, and it is more suitable for small-displacement vehicles.
The rotary vane compressor is small in volume and weight, and is easy to arrange in a narrow engine compartment, and is suitable for miniature vehicles.
