Hybrid electric vehicle air conditioning system and control method therefor

Abstract

The invention discloses a hybrid electric vehicle air conditioning system and a control method therefor. The hybrid electric vehicle air conditioning system comprises a whole vehicle controller, an automatic air conditioner controller, a battery, a battery controller, a range extender, a refrigerating unit and a heating unit. The heating unit comprises a PTC heater and a heating core radiator; the battery controller is used for detecting the electric quantity of the battery in real time, and sending the detection result to the whole vehicle controller; the whole vehicle controller is used for receiving a heating request or a refrigerating request sent by the automatic air conditioner controller, for enabling the PTC heater when the charge state SOC value of the battery is more than the charge state SOC_Z value at the time a range extending mode is opening, and for enabling a heating core radiator when the charge state SOC value of the battery is smaller than or equal to the charge state SOC_Z value at the time the range extending mode is opening. According to the hybrid electric vehicle air conditioning system, the PTC heater is added, and the control method is changed, so that the air conditioning system can work under different SOC states, and the balance between comfort of the air conditioner and saving of oil and electricity is achieved.

Description

technical field [0001] The invention relates to the field of automobile air conditioning, in particular to a hybrid electric automobile air conditioning system and a control method thereof. Background technique [0002] Existing automobiles are mostly fuel automobiles. From a global perspective, automobile exhaust is an important factor of air pollution. In the face of the current depletion of non-renewable resources such as oil and the severe situation of environmental pollution, countries encourage the development of new energy vehicles. A hybrid vehicle refers to a vehicle whose drive system is composed of two or more single drive systems that can operate simultaneously. The research and development of new energy products is the focus of car companies, but there are still many technical difficulties that need to be overcome, among which the matching of air conditioning systems is a difficult point. [0003] Due to the different driving power of electric vehicles and fue...

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Problems solved by technology

[0007] However, the above three methods have disadvantages: the air-conditioning system developed by using method (1) has a complex structure, takes up a large space, and has poor heating effect in winter; The main mode of the air-conditioning system, the air-conditioning system uses the power of the power battery, which affects the mileage of the vehicle. When the power of the power battery is insufficient, the air-conditioning system is difficult to open; the air-conditioning system developed by using method (3) limits the power of the hybrid vehicle engine. No matter under any working conditions, turning on the air conditioner will start the engine, which is relatively fuel-efficient

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