关键词: 插电式混合动力汽车；再生制动；控制策略

Abstract: Plug-in hybrid electric vehicle can use both power grid and engine power. At present, it is an important vehicle to solve energy shortage and environmental pollution. Regenerative braking energy control strategy, as one of the key technologies of plug-in hybrid vehicle, determines the ability of vehicle to recover ability. This paper mainly describes the traditional pneumatic braking and regenerative braking system of a hybrid electric bus. The structure and working principle of regenerative braking are studied, and the calculation and analysis of regenerative braking are carried out for a hybrid electric bus. A braking power distribution scheme of rational distribution of mechanical and regenerative braking with proportional relay valves installed in front and rear wheels is put forward, which not only meets the ECE braking regulations of vehicle at empty and full load, but also achieves the maximum braking energy recovery control strategy.

Key words: Plug-in hybrid electric vehicle; Regenerative braking; Control strategy