How many types of hybrid systems are there?
2 Answers
Hybrid vehicles have two structural forms: series and parallel. Classification by degree: Micro hybrid system, whose motor does not provide continuous power for vehicle driving; Mild hybrid system, represented by General Motors' hybrid pickup trucks; Full hybrid system, which uses 272-650V high-voltage starter motors with a higher degree of hybridization. Classification by drive: Series hybrid electric vehicles (HEVs), mainly composed of three major powertrains: engine, generator, and drive motor, forming an HEV power system in series; Parallel hybrid electric vehicles, where both the engine and generator are powertrains, and the power of the two major powertrains can be superimposed or output separately; Hybrid hybrid electric vehicles, mainly composed of three major powertrains: engine, electric generator, and drive motor.
I have been working in the automotive field for many years. Hybrid systems are mainly divided into three types: Parallel hybrid systems allow both the engine and the electric motor to directly drive the wheels, such as Honda's hybrid system, which offers strong acceleration and is suitable for high-speed driving. Series hybrid systems have the engine solely responsible for generating electricity, with the electric motor independently driving the wheels, like in range-extended electric vehicles, which are quiet and fuel-efficient for urban driving. Power-split hybrid systems combine both approaches, intelligently distributing power through planetary gear sets, with the Toyota Prius being a representative example, offering the lowest fuel consumption and being economical for daily commuting. Plug-in hybrid electric vehicles (PHEVs) are a variant that can be charged for longer distances but rely on charging stations. In terms of maintenance, series hybrids generally have fewer faults, while power-split hybrids are more complex to repair. The choice among these systems should be based on individual driving habits and cost considerations.
