Hydropower dual-purpose heating system and control method of hybrid electric vehicle

Abstract

The invention discloses a hydropower dual-purpose heating system of a hybrid electric vehicle. The hydropower dual-purpose heating system comprises a water radiator, an electric heater, an engine control unit, a temperature sensor, an entire vehicle control unit and an air conditioner control unit, wherein the water radiator is connected with an engine cooling water cycle; the engine control unit is used for controlling opening and closing of an engine; the temperature sensor is used for detecting ambient temperature; the entire vehicle control unit is used for monitoring the entire vehicle operation state; and the air conditioner control unit is used for controlling to turn on the water radiator according to a running mode signal and an engine working state signal of the entire vehicle control unit and an ambient temperature signal from the temperature sensor, and controlling to turn on the electric heater according to the running mode signal and a battery SOC (State of Charge) signal of the entire vehicle control unit and the ambient temperature signal from the temperature sensor. The invention also discloses a hydropower dual-purpose heating control method of the hybrid electric vehicle. According to the hydropower dual-purpose heating system and the hydropower dual-purpose heating control method, the consumtion ofelectric energy and fuel is optimized on the premise of guaranteeing a heating effect to reduce the energy consumption while a battery and engine cooling water are simultaneously used for heating.

Description

technical field [0001] The invention relates to the field of hybrid electric vehicles, in particular to a heating system and a control method for simultaneously utilizing engine cooling water and battery electric energy to generate heat. Background technique [0002] General hybrid vehicles can run in two modes: pure electric driving mode and range-extending driving mode, which are driven purely by the battery carried by the hybrid vehicle itself, or use the engine as a power source for extending the range. There are three main methods of air conditioning and heating for general hybrid vehicles: (1) Adopt heat pump air conditioning system, use four-way reversing valve to convert the evaporator into a condenser, and the condenser into an evaporator, so that the heat of the system can be passed through The condenser is lost into the car to achieve the purpose of heating. However, the structure and control of the heat pump air-conditioning system are complex, and the layout ta...

AI Technical Summary

Problems solved by technology

This method faces the problem of how to effectively control the work of the electric heater and water radiator, because if only the electric heater is used, it will inevitably have an impact on the pure electric mileage of the hybrid vehicle, and when the power battery is low , the air-conditioning system is difficult to turn on; and when only the water radiator is used for heating, the engine must be turned on, which increases fuel consumption, and the water cycle of the engine has to go through a small cycle before entering a large cycle, and the heating speed is low

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