An equalization charging system,which consists of double power supplies,is developed to keep the energy uniformity of each cell of the serially connected ultracapacitor using in the electric bus.

• 动力型超级电容器组作为电动城市公交客车能量源时,必须保证电容单体在充、放电过程中的能量均衡,为此提出了双电源的均衡充电系统结构。