蓄电池式地下装载机电池组的散热结构设计

为了解决蓄电池式地下装载机由于电池组容量大、工作时间长而引发的发热严重问题,建立了电池组生热与散热数学模型,研究了常规循环工况以及1 C充放电情况下电池组的散热效果,分析了出风口位置、出风口尺寸和隔板间隙宽度等散热结构对电池组散热特性的影响。结果表明:当电池组处于1 C持续充放电情况时,电池组的最高温度达到了63℃;出风口在第3层电池组的左右两侧时,这层的电池组散热效果最佳,但是其他两层电池组散热效果并没有明显改善;当隔板间隙宽度为10 mm、出风口长度为800 mm时,电池组整体散热效果最佳,最高温度降低了7.7%。

Heat dissipation structure design of battery packs for battery powered AC load haul dump

A mathematical model of heat generation and heat dissipation of battery packs was set up for the battery packs of battery powered alternating current(AC)load haul dump to solve the problem of severe heat generation due to its large capacity and a long working time.The heat dissipation effect of battery packs was investigated under the condition of normal cycle and 1 C charge and discharge.And it was also studied that the influence of air outlet position,air outlet size and partition width on the heat dissipation of battery packs.The results show that the maximum temperature of battery packs reaches 63℃when battery packs are under the condition of 1 C continuous charging and discharging.The best heat dissipation is achieved when an air outlet is located on left and right sides of the third floor leading,but that of the other two floors of battery packs has not been improved significantly.The overall heat dissipation of the battery packs is the best and the maximum temperature is reduced by 7.7%when the gap width of the separator is 10 mm and the length of the air outlet is 800 mm.