There are many research methods for electric vehicle cooling systems, such as experiments, simulations, and theoretical calculations. In this paper, double-inlet and double-outlet fluid cooling systems are selected as research objects, and the thermal characteristics of 2 and 12 strings of battery modules are tested using experimental methods. analysis. Analysis of Thermal Characteristics of Battery Modules Based on Heat Dissipation of Double-inlet and Double-outlet Liquid Cooling System --- Liquid Cooling Test System and Liquid Cooling Test System Assembly and Measurement Point of Charge and Discharge Process as Liquid Cooling Test System Assembly Deionized water is used as a coolant. Because the pump operates at a higher temperature, it is placed above the sink to reduce the temperature of the pump. When constructing a liquid-cooled test system, full consideration should be given to system leakage and overpressure, while also considering the stability of the feed flow. Based on the liquid cooling system heat dissipation, the standard module of the single-module battery system battery consists of a 55Ah single cell and a 1mm-thick copper nickel-plated jumper 2 and 12 strings, and the temperature measurement points are arranged. The standard module of the battery temperature measurement point is arranged in double inlet and double outlet flow paths. The water cooling plate is a double inlet and a double outlet flow path. The cooling liquid enters through the two outer ports and flows through three side-by-side inlet channels through the bottom baffle. Fold back, flow through the three side-by-side discharge channels, and finally flow out from the other two outlets on the outside. Double-inlet and double-outflow water-cooled plate flow channel diagram Three charge-discharge cycles The test process is 1C100%SOC three charge-discharge cycles, the initial state is full battery, the cycle is as follows: 1 constant current discharge, current 110A, when When any cell voltage reaches 2.5V, it will cut off; 2 Shelve 3 constant current and constant voltage charge, current 110A, when any one cell voltage reaches 3.65V, it will transfer to constant voltage charge, cut-off current 5.5A; 5 cycles 1 to 4 three times 6 End of the liquid cooling system cooling performance target assessment battery pack cooling system cooling performance indicators are mainly the maximum temperature rise of the battery pack and the maximum internal temperature difference (define the battery pack maximum temperature and ambient temperature difference is the maximum temperature rise of the battery pack, the battery pack maximum temperature and The difference between the lowest temperature is the maximum internal temperature difference. If the maximum temperature rise of the battery pack and the maximum internal temperature difference is small, the heat dissipation performance is superior. The design goal of the liquid cooling system is as follows: The maximum temperature rise of the battery pack is less than 10°C, and the maximum internal temperature difference is less than 5°C. Induction Curing Oven,Automatic Curing Oven,Automatic Induction Curing Oven,Tin Can Induction Curing Oven Golden Eagle , https://www.goldeneaglecanmachinery.com