Battery Package Thermal Management System Using the Composite PCM in Electrical Vehicle

摘要

Now a day's most of automobile industries are depending on IC(Internal Combustion) engines, these engines are producing more pollution due to exhaust gases and also as fuel resources are going down, to overcome this problem of pollution and fuel scarcity , some of the automobile industries are developing Electric Vehicles(EVs). This EVs produces zero emissions. Due to above reasons, in future electric vehicles rule the automobile industries. In this point of view, most of automobile industries are developing EVs. But the efficiency and mileage of EVs are very lower than SI(Spark Ignition) and CI(Combustion Ignition ). Because the battery can withstand the temperatures in between 15 0C to 45 0C , if the temperature is more than 45 0C or less than the 15 0C the battery is going to critical condition. Due to uneven heating or cooling of the battery that results in poor thermal management system. As battery plays a key role in the electric vehicle, it is also mandatory to improve the thermal performance of the battery. So, if we stabilize the temperature of the battery, it is possible to improve the battery performance. For this reasons, in this project we are developing a new technology of battery packing thermal management system by using composite pcm material. For this system we proposed battery package modeling. This battery package consists of PCM with Li-ion Battery. The packing body is made by aluminum material. Hence we chosen a composite pcm material which is very cheap and enhanced thermal conductivity to improve the thermal performance of the Li- ion Batteries. The composite phase change materials we selected are PCM(paraffin) + Aluminum alloy and PCM + copper alloys. Also a coolant fluid is circulating around the battery pack to extract heat and cool from pcm. In this paper we propose energy storage system ( this energy either heat energy in summer season or cold energy in winter season), this energy can utilize for car air-conditioning, which means seasonal energy storage system.