动力型铅酸及LiFePO_4锂离子电池的容量特性

Capacity characteristics of power lead-acid and LiFePO_4 Li-ion batteries

对12 V/55 Ah(C/20)动力型阀控铅酸(VRLA)电池和3.2 V/11 Ah动力型LiFePO4锂离子电池进行了容量实验,探讨了它们的容量特性和放电电流、放电起始电压、放电温升和环境温度的关系。LiFePO4锂离子电池的容量在2C电流下仅有约10%的衰减,而VRLA电池的衰减在1.5C时有近50%。

The capacity experiments of 12 V/55 Ah（C/20） power valve regulated lead-acid（VRLA） battery and 3.2 V/11 Ah power LiFePO4 Li-ion battery were carried out. The relations between their capacity characteristics and discharge current, discharge start voltage, temperature rise and the ambient temperature were investigated. The capacity of LiFePO4 Li-ion battery had only about 10% decrease at 2 C current discharge while the VRLA battery had near 50% decrease at 1.5 C.