Hybrid electric vehicle and thermal management system thereof
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A hybrid electric vehicle and thermal management system technology, applied in the field of automotive thermal management, can solve the problems of increased hardware costs and low energy utilization efficiency of the vehicle, and achieve the effects of improving efficiency, improving energy utilization efficiency, and reducing weight
Pending Publication Date: 2019-10-11
ZHENGZHOU YUTONG BUS CO LTD
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[0006] The purpose of the present invention is to provide a hybrid electric vehicle and its thermal management system, which is used to solve the problems that the existing thermal management system adopts an independent refrigeration cycle to increase the hardware cost and the energy utilization efficiency of the whole vehicle is low
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Embodiment 1
[0040] The present invention proposes a hybrid electric vehicle with a thermal management system such as figure 1 As shown, it includes the air-conditioning refrigeration cycle circuit, the motor heat exchange branch, the battery heat exchange branch and the engine heat exchange branch. Among them, the air-conditioning refrigeration cycle includes a compressor, a condenser, and a heat exchanger. The first set of interfaces of the heat exchanger is used to connect the condenser. The motor heat exchange branch, the battery heat exchange branch, and the engine heat exchange branch are connected in parallel. And connect the second group of ports of the heat exchanger through the water valve.
[0041] The motor heat exchange branch includes the motor heat exchange tube and the first water pump connected in sequence, the battery heat exchange branch includes the battery heat exchange tube and the second water pump connected in sequence, and the engine heat exchange branch includes t...
Embodiment 2
[0051] The present invention proposes a thermal management system for a hybrid electric vehicle, such as Figure 5 As shown, including air conditioning refrigeration cycle, battery natural heat dissipation cycle, battery forced cooling cycle, battery heating cycle, motor natural heat dissipation cycle, motor forced cooling cycle, engine natural heat dissipation cycle, defrosting and heating cycle .
[0052] Specifically, the air conditioner refrigeration cycle includes an air conditioner compressor 1 , a condenser 2 , an evaporator expansion valve 3 , an evaporator 4 , a heat exchanger expansion valve 5 , and a heat exchanger 6 .
[0053] The control process is to turn on the compressor, open the expansion valve 3 of the evaporator, and use the air conditioner to realize cooling in the car. The flow path of the refrigerant is compressor 1→condenser 2→expansion valve 3 of the evaporator→evaporator 4→compressor 1.
[0054] The battery natural cooling circuit includes a battery ...
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Abstract
The invention relates to a hybrid electric vehicle and a thermal management system thereof. The system includes an air conditioning refrigeration circulation loop, a motor heat exchange branch, a battery heat exchange branch, and an engine heat exchange branch, wherein the air conditioning refrigeration circulation loop comprises a compressor, a condenser, an evaporator, and a heat exchanger, a first group joint of the heat exchanger is used for connecting the evaporator, and the motor heat exchange branch, the battery heat exchange branch, and the engine heat exchange branch are connected inparallel and are connected with a second group joint of the heat exchanger through a water valve. The system achieves refrigeration inside a vehicle by controlling the air conditioning refrigeration circulation loop, achieves battery refrigeration by controlling the air conditioning refrigeration circulation loop and the battery heat exchange branch, achieves motor refrigeration by controlling theair conditioning refrigeration circulation loop and the motor heat exchange branch, achieves usage of engine residual heat for battery heating by the battery heat exchange branch and the engine heatexchange branch, achieves usage of residual heat of a motor for battery heating by the motor heat exchange branch and the battery heat exchange branch and achieves efficient utilization of energy of awhole vehicle.
Description
technical field [0001] The invention belongs to the technical field of automobile thermal management, and in particular relates to a hybrid electric vehicle and a thermal management system thereof. Background technique [0002] The sustainable development of the automobile industry faces energy and environmental challenges, and the development of new energy vehicles has become a global consensus. The hybrid electric vehicle comprehensively uses the two powers of the engine and the drive motor, and optimizes the work of the engine to the greatest possible extent through the power balance of the power battery, so that the fuel economy and emission performance are significantly improved compared with traditional power vehicles. It is considered to be an ideal vehicle at present. As a means of transportation, due to the different power sources from traditional cars, the heat management methods of hybrid cars are also completely different, mainly reflected in two aspects: (1) Unl...
Claims
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