Numerical simulation and analysis of heat dissipation characteristics of battery box of electric vehicle based on coupling model

In order to reduce the heat loss of battery in the process of electric vehicle moving, a numerical simulation analysis method based on coupling model is proposed. According to the actual consumption demand of the heat dissipation structure of the battery box, the center difference value level of the heat dissipation coefficient is calculated, and then the heat dissipation coefficient of the battery box of the electric vehicle is processed according to the separation principle of the boundary heat dissipation authority. On this basis, a standardized simulation grid is established by combining the characteristic coupling numerical value, and the comprehensive simulation processing of the thermal characteristic numerical value is realized by calculating the angle deflection of the thermal domain of the battery, and the successful application of the numerical simulation analysis method of the thermal characteristic of the battery box of the electric vehicle based on the coupling model is completed. The results show that, compared with the conventional numerical processing, the DSI and PSI coefficients of the new numerical simulation method show a significant downward trend, and the heat loss of the battery in the process of electric vehicle moving is effectively controlled.