基于超级电容与蓄电池复合动力电源的研究

Research of composite power supply based on supercapacitor and storage battery

作为化学储能的主要方式,蓄电池在功率密度、充电速度、能量转换效率、寿命等方面存在着严重的不足,致使许多以蓄电池为主动力的新型产业存在着技术瓶颈。而超级电容作为一种新型的储能方式,恰恰在这些方面具有优良的特性,与蓄电池形成了良好的性能互补。通过分析这两种电池的基本性能,设计了以蓄电池为主动力系统,以超级电容器为辅助动力系统的复合电源,阐述了复合电源的拓扑结构及功率分配控制方法。研究结果表明:采用复合电源工作的电源设备,相比于单一蓄电池电源的情况,具有更好的动力性和可靠性,同时还具有蓄电池的保护作用,有效地提高了系统的寿命。

As a primary means of chemical energy storage, storage battery has serious shortages in battery power density, charge rate, the energy conversion efficiency, longevity, and other aspects. The storage battery as the main power source causes many technical bottlenecks in the new industries. As a new way of energy storage, the supercapacitor has excellent characteristics in these aspects, which is a good performance complementary with battery. The basic properties of these two batteries were analyzed, a composite power supply with battery as the main power system and capacitor as the auxiliary power system was designed, and the topological structure and the power allocation and control method of the composite power supply was expounded. The results show that compared to a single power supply, the power equipment using composite power supply has better dynamic performance and reliability, at the same time, and also have the function of battery protection, which effectively improved the longevity of the system.