燃料电池电堆冷却液加热的实验研究

Experiment study of coolant heated on automobile PEMFC

在-20和-10℃的环境仓内,对电堆进行不同初始温度、不同流量、不同加热功率和保温方法的实验研究。结果证明,冷却液的流量和电加热器的功率越大,电堆升温到0℃的时间就越短,在相同的条件下,当冷却液保温到0℃,电堆从-20和-10℃升温到0℃所需的时间分别缩短了264和185 s。在冰点以下的环境下,对燃料电池电堆而言,保温+电加热及停机吹扫方法是最有效、最快捷的低温起动方法。

The experiment studies with different initial temperatures, different flows, different heating powers, and heat preservation methods were carried out in the climate chamber of -20 and -10 ℃.The experiment results show that the coolant flow and the power of the electric heater is bigger, the time that the stack rises to 0℃ is shorter.Under the same conditions, the time that the stack rises to 0℃ reduces 264 and 185 s form -20 and -10 ℃ respectively when the coolant temperature keep warm to 0 ℃.The technique with heat preservation, electrical heating and purging is the most effective method.