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Double-heat-source heat pump system suitable for electric automobile and operation method thereof

A heat pump system and electric vehicle technology, applied in the field of solar energy utilization, can solve problems such as poor battery life, achieve the effects of improving power generation efficiency, increasing heating coefficient, and reducing HVAC energy consumption

Active Publication Date: 2021-07-13
ZHEJIANG ZHENENG TECHN RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a dual heat source heat pump system and its operating method suitable for electric vehicles, and solve the problem of poor battery life of electric vehicles during winter operation

Method used

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  • Double-heat-source heat pump system suitable for electric automobile and operation method thereof
  • Double-heat-source heat pump system suitable for electric automobile and operation method thereof
  • Double-heat-source heat pump system suitable for electric automobile and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The double heat source heat pump system suitable for electric vehicles, including heat pump heat / refrigeration cycle systems, powertrain system warming / cooling circulation system, photovoltaic-powered battery charging system and PVT evaporator heat dissipation system.

[0046] The heat pump heat / refrigeration circulation system includes a four-way reversing valve 1, an expansion valve 2, a hot-cooling heat-cooling heat exchanger 3, a No. 1 solenoid valve 4, a three-way valve 5, and No. 2 The reversing valve 6, the compressor 7, the first heat exchanger 8, and the PVT evaporator 26. The first ventilation heat exchanger 3 connects the PVT evaporator 26 inlet by one three-way valve 5, and the PVT evaporator 26 is connected to the second four-way commutation valve 6, the second four-way reversing valve 6 is connected to the compressor 7, The second four-way reverse valve 6 is also connected to the first heat exchanger 8, one heat exchanger 8 connected to the four-way reve...

Embodiment 2

[0055] The operation method of the double heat source heat pump system suitable for electric vehicles, including heat pump heat / refrigeration cycles and power battery systems for warming / cooling cycles, the operation methods include:

[0056] When the ambient temperature is low, it is necessary to heat the power battery system 22 to ensure that the battery is working properly, there are three running schemes:

[0057] (1) There is solar irradiation and the heat pump can operate normally. The A end and C-terminal communication, B-terminal and D end connectivity, B-terminal and D-terminal communication; the second four-way reversing valve 6, C-terminal and D-terminal communication; No. 1 solenoid valve 4 Turn off; the A end and B end of the three-way valve 5; the A end and B end of the second three-way valve 10; the No. 2 solenoid valve 12 is opened; the No. 5 solenoid valve is opened; the four solenoid valve 16 shut down.

[0058] Heat pump heat cycle: refrigerant absorbs the h...

Embodiment 3

[0067] The operation method of the double heat source heat pump system suitable for electric vehicles also includes a PVT evaporator heat dissipation system, and its operational methods include:

[0068] The car is under solar radiation, the ambient temperature is high, and the air conditioner in the vehicle is closed. At this time, the second type 25, the third ventilator 15, and the second air cooling heat exchanger 15 and the fan 29 are opened. The air outside the car passes through the No. 2 air-cooling heat transfer, and then sequentially passes through the No. 2 ventilation port 25, the air passage 27, the fan 29, and finally drain the car from the three vents 30, one can give the car Cooling, improving the comfort of the car, two, can cool the PVT evaporator 26 to ensure the safety of the battery while increasing power generation efficiency.

[0069] The car is under solar radiation, the ambient temperature is high, and the air conditioner in the vehicle is in operation. At...

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Abstract

The invention relates to a double-heat-source heat pump system suitable for an electric automobile. The double-heat-source heat pump system comprises a heat pump heating / refrigerating circulating system, a power battery system heating / cooling circulating system, a photovoltaic-power battery charging system and a PVT evaporator cooling system. The heat pump heating / refrigerating circulating system comprises a first four-way reversing valve, an expansion valve, a first air cooling heat exchanger, a first electromagnetic valve, a first three-way valve, a second four-way reversing valve, a compressor and a PVT evaporator. The power battery system heating / cooling circulation system comprises a first heat exchanger, a liquid storage tank, a second three-way valve, an electric heater, a second electromagnetic valve, a third electromagnetic valve, a first pump, a second air cooling heat exchanger, a fourth electromagnetic valve, a power battery system and a motor system. The double-heat-source heat pump system has the beneficial effects that the PVT evaporator is combined with the electric vehicle air source heat pump system, the heating coefficient of the heat pump system can be increased, the power consumption is reduced, and the durability of a power battery system in winter is improved.

Description

Technical field [0001] The present invention relates to the field of solar energy utilization, and more particularly to solar energy-based thermal heat pump systems that can be applied to electric vehicles, effectively improve the battery life and comfort of electric vehicles. Background technique [0002] Electric automotive technology is gradually maturing and has become an important part of the automotive industry. During life is one of the key indicators of evaluating electric vehicle performance, the indicator is related to the power battery itself, and on the other hand, it is related to the performance of electric vehicle thermal management system. The electric vehicle thermal management system maintains the relative stability of the power battery and the operating temperature of the motor and the motor, which is maintained by consuming a certain amount of power, thereby ensuring the high performance operation of the power battery and the motor, and is also used in the car...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H1/22B60H1/32
CPCB60H1/00392B60H1/00278B60H1/00271B60H1/22B60H1/3204B60H1/3227B60H2001/00307
Inventor 彭浩王静毅寿春晖代彦军邬荣敏吴田姚剑沈曲丁莞尔洪凌贺海晏金胜利黄绵吉李晓洁周剑武纪培栋
Owner ZHEJIANG ZHENENG TECHN RES INST
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