WANG Jian, GUO Hang, YE Fang, et al. Numerical simulation of effect of heat pipe cooling device on temperature distribution in lithium-ion battery pack of vehicle[J]. CIESC Journal, 2016, (S2): 340-347.
WANG Jian, GUO Hang, YE Fang, et al. Numerical simulation of effect of heat pipe cooling device on temperature distribution in lithium-ion battery pack of vehicle[J]. CIESC Journal, 2016, (S2): 340-347.DOI: 10.11949/j.issn.0438-1157.20161404.
Too high temperature of a lithium-ion battery pack will reduce the discharge efficiency and accelerate the decay of battery life.In order to lower the temperature of the battery pack
a cooling system which inserted heat pipes among the batteries was designed.Based on the actual speed of electric vehicle
the temperature distribution of the battery pack under different speeds was numerically calculated.The results showed that the discharge current and the heat production increased sharply with the increase of vehicle speed
the discharge current reached up to 143 A at a vehicle speed of 120 km·h-1
and the battery pack temperature exceeded 50℃ when the batteries discharged ending.Compared with the natural convection cooling system
the heat pipe cooling system made the average temperature of the battery pack reduce 4.6℃ and the temperature difference reduce 2.2℃.The temperature of battery pack was effectively reduced with the increase in length of condensation section of heat pipes.A satisfactory cooling requirement of the battery pack was obtained when the length of heat pipe condensing section was 50 mm.