Performance of serpentine channel based Li‐ion battery thermal management system: An experimental investigation

Abstract

Thermal management of large-scale Li-ion battery packs is of great significance to their safety and life cycle, which would impact their applicability in electric vehicles. Of the many strategies developed for this purpose, indirect liquid cooling has already demonstrated quite high potentials in thermal regulation of such battery systems. In this study, a compact lightweight serpentine wavy channel configuration was chosen to construct an indirect liquid cooling system for a battery module of cylindrical Li-ion cells. The serpentine channel has a number of six internal minichannels. Experimental test data were used to conduct a comprehensive thermal analysis to examine the highest temperature, the maximum temperature difference, and the heat accumulation percentages, and so forth within the battery pack. Results have revealed the ability of the cooling system to maintain the module temperature within appropriate working conditions for electric vehicle applications for most cycling tests including two driving cycles. Furthermore, the analysis insights raised by this study could be useful in understanding the cooling performance of the liquid-based thermal management systems for electric vehicles. K E Y W O R D S battery thermal management, compact lightweight vehicle, Li-ion battery module, liquid cooling, serpentine channel 1 | INTRODUCTION Due to the immense importance of transportation in present-day societys' economic engine, transition into an electrified transportation sector can be viewed as the next step in their sustainable development process. 1 It was not until recently that efforts to manifest such a transition have gained enough momentum to put into effect resolutions that bred new policies and laws grounded in the United Nations Framework Convention on Climate

A Novel Method for Heat Exchange Evaluation in EV

“…Battery thermal management technology can be divided into air cooling [13][14][15][16][17][18][19][20], liquid cooling [21][22][23][24][25][26][27][28] and phase change material (PCM) cooling [29][30][31][32][33][34][35] according to different cooling media. Air cooling is one of the most common and widely used cooling methods.…”

“…The battery cooling under high temperature conditions and the battery heating function under low temperature conditions were experimentally studied. Reference [28] adopted an indirect liquid cooling system to cool the cylindrical lithium-ion battery module, performed various single-rate charge-discharge cycles on the battery, and simulated the working conditions of the battery under actual driving conditions. A comprehensive thermal analysis was carried out on the maximum temperature, the maximum temperature difference, and the percentage of heat storage.…”

Parameters of liquid cooling thermal management system effect on the Li-ion battery temperature distribution

“…Subsequently, the irregular channel type also be considered as a research factor, such as serpentine channel. Ibrahim et al [24] proposed a serpentine channel with a count of six mini-channels, and take the temperature, temperature difference, and the heat accumulation fraction as evaluation indicators, It has shown that the cooling ability is able to keep the battery pack within an appropriate temperature range for most cycling tests. Similarly, Zhang et al [25] proposed a snake-type channel with a guide plate, and the results show that this snake-type channel with a guide plate possessed better thermal exchange efficiency than an ordinary snake-type channel, thus could avoiding the heat accumulation.…”

Study on synthesis of spinel LiNi 0 . 5 Mn 1 . 5 O 4 cathode material and its electrochemical properties by two‐stage roasting

“…3,[11][12][13][14][15][16][17][18][19][20][21][22][23] At present, LIB is mainly used in mobile electronic equipment, and its application has begun to develop to the small size and lightweight of microelectrical appliances, as well as large electric equipment. [24][25][26][27][28] By contrast with traditional LIB materials such as LiCoO 2 , LiNiO 2 , LiMn 2 O 4 , LiFePO 4 , and so on. [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] LiFePO 4 is a commonly used positive electrode material for power lithium-ion batteries, which has the advantages of high safety, but its specific energy is not high, so it is difficult to meet the needs of new energy vehicles with longer driving range.…”

“…Lithium‐ion battery (LIB) is the best comprehensive rechargeable battery system software at this stage 3,11‐23 . At present, LIB is mainly used in mobile electronic equipment, and its application has begun to develop to the small size and lightweight of microelectrical appliances, as well as large electric equipment 24‐28 . By contrast with traditional LIB materials such as LiCoO 2 , LiNiO 2 , LiMn 2 O 4 , LiFePO 4 , and so on 29‐45 .…”