To improve comprehensive efficiency of the power system in high-temperature environments, a
power distribution strategy for hybrid electric vehicles was proposed considering battery thermal management. The thermal management in an electric vehicle and the EV energy consumption model were analyzed.The simulation was conducted, taking into consideration the single power supply, the composite power supply and the power distribution strategy under CATC and NEDC conditions. The results show that compared with the single power supply, the energy recovery of the composite power supply is increased by more than 3.6%, the energy consumption is reduced by more than 3.3% and the final battery temperature is decreased by
more than 3.51℃. Compared with the conventional strategy, the power distribution strategy considering the battery thermal management increases the energy recovery of the power system by about 1.8% by improving the ultra-capacitor performance, reduces the energy consumption by about 1.2% and reduces the final temperature of the battery by about 1.25℃ .The proposed strategy has been proved an effective way to improve the battery thermal management performance in high temperature environments and to enhance the efficiency of composite power supply. |