Abstract:

The influence of different operating condition and battery position on the wind cooling heat dissipation performance of electric vehicle running on highway is researched. The results show that the thermal power of battery increases with the decrease in environmental temperature and increases with increase in the charge and discharge rates; the heat dissipation performance of natural wind cooling of power cabin in electric vehicle is improved with the increase in vehicle speed and the environmental temperature and the decrease in charge and discharge rates; the heat dissipation performance of natural wind cooling of power cabin in electric vehicle is improved and then decreased with the increase in distance between battery and power cabin, and the distance of 230 mm meets the best heat dissipation performance.

Key words: thermology, electric vehicle, running on highway, battery position, heat dissipation performance, charge and discharge rate