受限空间中PEM燃料电池和锂离子电池组的热分析
Thermal Analysis of PEM Fuel Cell and Lithium Ion Battery Pack in Confined Space
摘要：
混合储能系统（HESS）在行业中占据了一席之地。HESS提高了系统效率，降低了整体成本，延长了系统的使用寿命。质子交换膜（PEM）燃料电池与锂离子电池（LIB）混合用于车辆应用、机器人应用等。在具有几何空间约束的应用中，能量存储元件的温度受对流热传递的影响。本文利用COMSOL Multiphysics软件包对不同放电率（C率）的锂离子电池和不同电压的质子交换膜-锂离子电池混杂系统的几何结构进行了热分析。当与PEM电池紧密接近放置时，LIB包的温度的额外升高在4 ℃下在0.03-0.6 $^0$ ℃的范围内。锂离子电池组的电池温度随着C速率的增加和PEM电池电压的降低而增加。
英文摘要：
Hybrid energy storage systems (HESS) have carved a niche in the industry. HESS improve the system efficiency, reduce the overall cost and increase the lifespan of the system. The proton exchange membrane (PEM) fuel cell is hybridized with Li-ion batteries (LIB) for vehicular applications, robotic applications etc. In applications which have geometrical space constraints, the temperature of the energy storage elements is influenced by convective heat transfer. In this paper the thermal analysis of the geometry of PEM-LIB hybrid system is carried out using COMSOL Multiphysics Software package for different discharge rates (C rates) of the LIB and different voltages of the PEM cell. The additional rise in temperature of the LIB pack when placed in close proximity with PEM cell was in the range of 0.03-0.6$^0$C at 4C. The cell temperature of the LIB pack increased with increase in C rate and decrease in PEM cell voltage.
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