关键词: 电池, 热管理, 控制, 策略, 能耗

Abstract: The appropriate thermal management control strategy in the battery system is of great significance for improving the energy utilization efficiency of the vehicle. This paper evaluates the energy consumption and strategy based on the verified simulation model. The results show that the control water temperature is too high or too low will lead to the increase of thermal management energy consumption, and there is an optimal solution for controlling water temperature; The control flow is within a certain range, and the thermal management energy consumption increases with the increase of flow. In addition, based on the three performance indicators of thermal management energy consumption, constant temperature ratio and temperature drop rate, this paper adopts weighted comprehensive evaluation method to judge the advantages and disadvantages of different water temperature strategies; the result shows that when the water temperature is controlled at 20℃, the comprehensive performance evaluation value is the highest.

Key words: Battery, Thermal management, Control, Strategy, Energy consumption