Researches on heating low-temperature lithium-ion power battery in electric vehicles

A review on thermal management of lithium-ion batteries for electric vehicles

“…The design of thermal resistance, bypass flow and inefficient spacing still needs further study. Li et al [45] battery cell, PTC resistance wire winding 35 W, -40 °C 25 min 0 °C poor temperature uniformity Lei et al [46] battery pack, wide wire metal film 90 W, -40 °C 15 min the same as working at 0 °C the structure of the heating device is simple Jaguemont et al [47] battery cell, high current heating Lei et al [49] battery pack, intermittent self-heating heating for 0.1 s stopping heating for 0.3 s last 30 s ∆T=2-3 °C good temperature uniformity Jiang et al [50] battery cell, direct current and alternating current 754 Hz, -20 °C 10 min 2.1 °C the structure of the heating device is complex Yang et al [51] battery pack, an active terminal added nickel foil heating elements added 10 s Tmax=50 °C Tmin=-28 °C rapid temperature rise local overheating poor temperature uniformity Ji and Wang [56] battery cell, convection heating 60 Hz, -20 °C 3 min 20 °C rapid temperature rise Complex device system By comparing different heating methods of lithium-ion batteries, it can be found that the scholars have made contributions to ensuring the normal operation of LIBs of EVs at low temperatures from multiple perspectives, such as energy consumption, heating temperature, heating rate, temperature uniformity inside the battery, simplicity of heating device structure. Table 1 briefly summarizes the various heating methods used for LIBs.…”

“…Li et al [45] have improved the performance of LIB at low temperature by heating an aluminum sheet with positive temperature coefficient (PTC) resistance wire winding. LiMn2O4 power battery with nominal voltage of 3.7 V and capacity of 35 Ah was selected as the research object.…”

Investigation of temperature performance of Lithium-ion batteries for electric vehicles

“…Figure 5, Figure 6 and Figure 7 show that the performance of the battery charge is weaker compared with the battery discharge characteristics. And the attenuation of high cur- rent charging is more significant [5]. Figure 5 clearly shows that the battery charging voltage increases with the drop ping temperature for the constant current discharging case of 25A.…”

“…In the same battery pack at the same ambient temperature, the battery discharge voltage decreases slower for the one with lower temperature. 5. The cycle life test of battery shows that the temperature has great influence on the performance of lithium battery.…”