单液流锌镍电池能量损失与效率初步研究

Energy loss and efficiency of single flow zinc nickel batteries

介绍了一种新型的单液流锌镍电池,研究分析了单液流锌镍电池充放电过程中能量损失的原因,该电池能量损失由电池自身充放电过程中形成的内部能量损失和由循环泵形成的外部能量损失组成。通过对300 Ah单液流锌镍电池不同恒流充放电模式的实验数据和结果的分析,实验结果反映单液流锌镍电池能量效率与系统效率的特性,表明改变恒流充放电电流可减少该电池的能量损失和提高系统效率,该电池系统效率存在进一步优化的空间。

A new type of single flow zinc nickel battery was presented and the reason of energy loss during the charging and discharging process was studied and analyzed. The energy loss consists of the internal energy loss caused by battery itself and the external energy loss caused by the pump. By means of analyzing the experimental results of 300 Ah single flow zinc nickel battery under different constant charge-discharge currents, the characteristics of energy efficiency and efficiency of single flow zinc nickel battery were revealed. When the charge-discharge current decreases, the energy efficiency increases. The system efficiency is higher when the current is 140 A, and it proves that the system efficiency can be optimized further.