The new energy vehicle control system is an important part of the new energy vehicles, and its performance and safety will directly affect the operation effect of the whole vehicle. The cooling machine refrigeration process is an important technology in the new energy vehicle control system, which is used to maintain the normal operation of the control system and prevent its overheating or overcooling.

Refrigeration process:

1. Refrigerant selection: The refrigerant has the characteristics of low boiling point, good chemical stability and thermal conductivity, according to the appropriate requirements of the control system and working environment. Generally, R22 is usually used at high temperature (+ 5℃ ~ + 35℃); environmental protection refrigerant R404A is used at medium temperature (-5℃ ~ -35℃); R23 is used at low temperature (-40℃ ~ -90℃). It can also be used flexibly according to the actual usage situation and design requirements.

2. Refrigeration system design: According to the characteristics of refrigerant, the design of appropriate refrigeration system, including compressor, condenser, evaporator, expansion valve and other components to form a closed circulation system, used to manufacture cooling capacity.

3. Refrigerant cycle: The cooling amount in the refrigeration system is transferred to the cooling agent, and the cooling agent then transfers the cooling amount to each component in the control system through the circulating flow to achieve the cooling effect.

Characteristics of refrigeration system:

1. High efficiency and energy saving: The chiller refrigeration system adopts advanced refrigeration technology and equipment, which can quickly and effectively reduce the temperature of the control system, and has a high energy efficiency ratio, which can save energy.

2. Environmental protection and pollution-free: The chiller refrigeration system adopts environmentally friendly refrigerant, which is harmless to the environment and can reduce the pollution to the environment.

3. High reliability: Chiller refrigeration system after strict design and manufacturing process, has high reliability and stability, can run for a long time and maintain stable performance.

Precautions for use:

1. When selecting the refrigerant, its chemical stability, thermal conductivity, boiling point and other characteristics should be fully considered to ensure the refrigeration effect and safety.

2. When designing and manufacturing the refrigeration system, the factors such as its energy efficiency ratio, reliability and stability should be fully considered to ensure its long-term and stable operation.

3. When using and maintaining the refrigeration system, the operation and maintenance shall be carried out in accordance with the prescribed requirements to ensure its normal operation and service life.