With the rapid development of the new energy vehicle industry, the reliability and performance of motor engines, hydrogen fuel cell engines and fuel engines have become the focus of attention. In order to meet this demand, a company has successfully developed advanced liquid cooling temperature control test equipment, which provides strong support for the research and development and testing of key components of new energy vehicles.

　　The liquid cooling temperature control test equipment is mainly used to simulate the high or low temperature environment and carry out the reliability test of the main components of the automobile. The equipment through the liquid energy unit to the measured part through liquid heating and cooling, because the liquid directly with the measured part of the heat exchange, high heat exchange efficiency, the temperature of the measured part reached quickly. This innovative technology has significantly shortened the research and development cycle and laid a solid foundation for the rapid development of new energy vehicles.

　　The device has a series of outstanding product features. First of all, in terms of flow indicators, the adjustment range reaches 4-40L/min, the control accuracy is as high as ±0.1L/min, and the two flows are controlled separately. Secondly, the temperature adjustment range covers 5℃-130℃, the control accuracy is ≤±0.5℃, and the PLC temperature control method is used. In the pressure index, the adjustment range is 0-400kpa, and the control accuracy reaches ±2kpa. In addition, the liquid cooling temperature control test equipment also has local and remote manual/automatic control functions, using the appropriate proportion of water and ethylene glycol mixture as the cooling medium.

　　The main components of liquid cooling temperature control test equipment require extremely high accuracy, including water tanks and pipes with pressure of 1.5MPa, pressure sensors with accuracy of ±0.1%, flow sensors with accuracy of ±0.25%, and temperature sensors with accuracy of ±0.2 ° C. The refrigeration system adopts the combination of refrigeration cycle, hot bypass and liquid jet cooling, and the intelligent controller for accurate temperature and pressure regulation. The circulating water tank is made of stainless steel and equipped with temperature and level sensors to ensure stable system operation.

　　It is worth mentioning that the equipment realizes the function of fast cooling and temperature control. The water cooler for the test bench can be cooled directly in the range of 5 ~ 130 ° C, and the temperature can be accurately controlled. Through the precise coordination of three kinds of solenoid valves, the compressor unit can achieve rapid cooling function. At the same time, the frequency converter is used to control the water supply pressure and flow of the external circulation pump to ensure the efficient operation of the system.

　　The liquid cooling temperature control test equipment also has the remote control function, which can remotely set the temperature value, temperature conversion rate and flow value, and run according to the set curve programming. Real-time reading of temperature, flow and pressure values provides a convenient means of data analysis for developers. The communication mode adopts RS485(CAN or Ethernet) communication interface and provides communication protocol remote parameter setting, which realizes the function of data acquisition and output.

　　In order to ensure the safe and stable operation of the system, the liquid cooling temperature control test equipment has taken a number of protection measures. Install protective measures such as pressure relief valve and exhaust valve, as well as alarm functions such as liquid refill port, liquid level monitoring and fault, to ensure that the system can send alarm and take corresponding measures in time under abnormal circumstances.

　　In summary, the liquid cooling temperature control test equipment provides a strong guarantee for the development and testing of new energy vehicle motors, hydrogen fuel cell engines and fuel engines with high heat exchange efficiency, precise control accuracy and rich product characteristics. With the continuous expansion of the new energy vehicle market and the continuous advancement of technological innovation, the equipment will play a more important role in the future, promoting the development of the new energy vehicle industry to a higher level.