According to the different degree of mixing in the hybrid power system, the hybrid power system can also be divided into the following four categories:
① Micro hybrid system. The representative models are PSA's hybrid version C3 and Toyota's hybrid version Vitz. Strictly speaking, a car with a micro-hybrid system is not a true hybrid car, because its electric motor does not provide continuous power for the car.
②Light hybrid power system. The representative model is GM's hybrid pickup truck. In addition to the fact that the light hybrid power system can control the start and stop of the engine with a generator, it can also achieve: (1) Part of the energy is absorbed under deceleration and braking conditions; (2) During driving, the engine is at a constant speed In operation, the energy produced by the engine can be adjusted between the driving demand of the wheels and the charging demand of the generator. The blending degree of light hybrid power system is generally below 20%.
③Medium hybrid power system. Honda's Hybrid Insight, Accord and Civic all belong to this system. The hybrid system uses a high-voltage motor. In addition, the mid-hybrid power system also adds a function: when the car is under acceleration or heavy load conditions, the electric motor can assist in driving the wheels, thereby supplementing the lack of power output of the engine itself, thereby better improving the performance of the vehicle. The mixing degree of this system is relatively high, which can reach about 30%. The current technology is mature and widely used. ④ is a complete hybrid system. Toyota's Prius and future Estima are fully hybrid systems. The system uses a 272-650v high-voltage starter motor with a higher degree of mixing. Compared with the mid-hybrid system, the hybrid system of the complete hybrid system can reach or exceed 50%. The development of technology will make the complete hybrid system gradually become the main development direction of hybrid technology.