Hybrid vehicle, method for assisting braking of hybrid vehicle, storage medium, and vehicle control unit

Abstract

The application discloses a hybrid vehicle and an auxiliary braking method thereof, a storage medium and a vehicle controller, and relates to the technical field of vehicles, wherein the hybrid vehicle comprises a transmission system, and the transmission system comprises a multi-gear gearbox; the auxiliary braking method comprises the following steps: when an auxiliary braking request instruction is received, the vehicle speed, road surface information and the state of charge of a battery are obtained; at least one of the vehicle speed, the road surface information and the state of charge is used to determine a target braking mode, wherein the target braking mode comprises a plurality of braking sub-modes, the transmission ratios of the plurality of braking sub-modes are different, or the paths of engine power flowing to wheels are different; the target braking sub-mode is determined based on the current state of the multi-gear gearbox, and the auxiliary braking is performed based on the target braking sub-mode. According to the auxiliary braking method, the braking mode and the transmission configuration can be adaptively selected and switched according to real-time vehicle states, so that the braking efficiency, the energy recovery efficiency and the smoothness of mode switching are improved.

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