The following is a detailed introduction to the cooling system of new energy vehicles:
1. Purpose of cooling system
The battery system of new energy vehicles needs to work within a narrow temperature range, which involves battery life, mileage and safety issues. At too high a temperature, the battery life will be damaged and there may even be a risk of explosion; at too low a temperature, the battery energy density will decrease, resulting in a reduction in mileage. Therefore, it is very important to maintain the stability of the battery operating temperature. The main purpose of the heat dissipation system is to control and maintain the operating temperature of the battery and the motor, and to dissipate the heat generated by the battery and the motor in a timely manner to keep the overall temperature stable.
2. Design of cooling system
The design of cooling system for new energy vehicles needs to consider the following factors:
(1) Cooling area: The larger the cooling area of the battery or motor, the stronger the ability to absorb heat capacity, and the better it can regulate the temperature of the battery or motor.
(2) Cooling material: The selection of materials needs to consider factors such as thermal conductivity, weight and cost. In current designs, most cooling materials are aluminum or copper, because both materials have good thermal conductivity and high mechanical strength.
(3) Heat dissipation structure: The structural design of the heat dissipation system also needs to consider heat dissipation efficiency and safety. The more common structural design now uses components such as heat dissipation plates, heat dissipation grilles, and internal fans to dissipate heat from batteries or motors.
3. Working principle of cooling system
The cooling system usually cools the battery or motor by circulating the refrigerant in the heat sink. During the refrigerant circulation process, the cooling system usually needs to consider some additional factors, such as strong wind cooling mode and refrigerant delivery mode. In general, both modes can effectively reduce the temperature of the battery or motor, but the specific mode selection needs to be determined according to the actual use environment and needs of the vehicle.
4. Cooling system maintenance and care
In daily use, the cooling system of new energy vehicles needs to be controlled and maintained to ensure its normal operation. Some cooling system failures, such as oil pipe blockage, refrigerant leakage, etc., will cause overheating or overcooling of the battery or motor or even more serious problems, which will affect the performance of the car. Therefore, it is also very important to maintain and care for the cooling system.
In summary, the design, working principle and maintenance of the cooling system of new energy vehicles need to be paid attention to, which not only involves the performance of the car, but also the service life and user experience of new energy vehicles.
