In view of the requirements of the special structural features of a series-parallel hybrid electric bus on its control strategy, an optimization simulation on its energy management strategy, which determines the power distribution between engine and battery, is conducted by using Pontryagin's minimum principle and based on the solution flow chart designed and the simulation model built, with battery power as control variable and minimizing fuel consumption as objective. The results demonstrate the marked effects of optimization on energy management strategy based on Pontryagin's minimum principle with the fuel consumption per 100km 18. 33% lower than that with rule-based control strategy.%针对一款混联式混合动力客车特殊的结构特点对控制策略的要求,以电池功率为控制变量,以燃油消耗最小为目标,采用极小值原理,并基于所设计的求解流程和所建立的模型,对确定发动机和电池之间功率分配的能量控制策略进行优化仿真.结果表明,采用极小值原理对能量控制策略的优化效果显著,与规则控制策略相比,100km油耗降低了18.33％.
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