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A dual heat source heat pump system suitable for electric vehicles and its operating method

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

Active Publication Date: 2022-03-29
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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  • A dual heat source heat pump system suitable for electric vehicles and its operating method
  • A dual heat source heat pump system suitable for electric vehicles and its operating method
  • A dual heat source heat pump system suitable for electric vehicles and its operating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The dual heat source heat pump system suitable for electric vehicles includes a heat pump heating / cooling cycle system, a power battery system heating / cooling cycle system, a photovoltaic-power battery charging system, and a PVT evaporator heat dissipation system.

[0046] The heat pump heating / refrigerating cycle system includes a No. 1 four-way reversing valve 1, an expansion valve 2, a No. 1 air-cooled heat exchanger 3, a No. 1 solenoid valve 4, a No. 1 three-way valve 5, and a No. 2 four-way valve. Reversing valve 6, compressor 7, No. 1 heat exchanger 8 and PVT evaporator 26. No. 1 air-cooled heat exchanger 3 is connected to the inlet of PVT evaporator 26 through No. 1 three-way valve 5, the outlet of PVT evaporator 26 is connected to No. 2 four-way reversing valve 6, and No. 2 four-way reversing valve 6 is connected to compressor 7. No. 2 four-way reversing valve 6 is also connected to No. 1 heat exchanger 8, No. 1 heat exchanger 8 is connected to No. 1 four-way re...

Embodiment 2

[0055] The operation method of the dual heat source heat pump system suitable for electric vehicles includes heat pump heating / refrigeration cycle and power battery system heating / cooling cycle, and its operation method includes:

[0056] When the ambient temperature is low and the power battery system 22 needs to be heated to ensure the normal operation of the battery, there are three operation schemes:

[0057] (1) There is solar radiation and the heat pump can operate normally. The a-end of the No. 1 four-way reversing valve 1 is connected to the c-end, and the b-end is connected to the d-end; the a-end of the second four-way reversing valve 6 is connected to the b-end, and the c-end is connected to the d-end; 4 is closed; No. 1 three-way valve 5 is connected to end a and b; No. 2 three-way valve 10 is connected to end a; No. 2 solenoid valve 12 is opened; No. 5 solenoid valve 18 is opened; No. 4 solenoid valve 16 closure.

[0058] Heat pump heating cycle: the refrigerant...

Embodiment 3

[0067] The operation method of the dual heat source heat pump system suitable for electric vehicles also includes the operation of the PVT evaporator heat dissipation system, and the operation method includes:

[0068] The car is under solar radiation, the ambient temperature is relatively high, and the air conditioner in the car is turned off. Open No. 2 vent 25, No. 3 vent 30, No. 2 air-cooled heat exchanger 15 and fan 29 this moment. The air outside the car enters the car through the No. 2 air-cooled heat exchanger 15, then passes through the No. 2 vent 25, the air duct 27, and the fan 29 in turn, and finally discharges from the No. 3 vent 30 outside the car. Cool down to improve the comfort in the car. Second, it can cool down the PVT evaporator 26 to ensure the safety of the battery while improving power generation efficiency.

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

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Abstract

The invention relates to a dual heat source heat pump system suitable for electric vehicles, including a heat pump heating / refrigerating cycle system, a power battery system heating / cooling cycle system, a photovoltaic-power battery charging system and a PVT evaporator heat dissipation system; the heat pump heating / cooling system Refrigeration cycle system, including No. 1 four-way reversing valve, expansion valve, No. 1 air-cooled heat exchanger, No. 1 solenoid valve, No. 1 three-way valve, No. 2 four-way reversing valve, compressor and PVT evaporator; The heating / cooling circulation system of the power battery system includes a No. 1 heat exchanger, a liquid storage tank, a No. 2 three-way valve, an electric heater, a No. 2 solenoid valve, a No. 3 solenoid valve, a No. 1 pump, and a No. 2 air-cooled valve. Heat exchanger, No. 4 solenoid valve, power battery system and motor system. The beneficial effects of the present invention are: the present invention combines the PVT evaporator with the air source heat pump system of the electric vehicle, which can increase the heating coefficient of the heat pump system, reduce power consumption, and improve the battery life of the power battery system in winter.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a solar energy-based dual heat source heat pump system applicable to electric vehicles, which effectively improves the battery life and comfort of the electric vehicle. Background technique [0002] Electric vehicle technology is gradually maturing and has become an important part of the automotive industry. Endurance is one of the key indicators for evaluating the performance of electric vehicles. On the one hand, this indicator is related to the performance of the power battery itself, and on the other hand, it is related to the performance of the thermal management system of the electric vehicle. The electric vehicle thermal management system maintains the relatively stable operating temperature of the power battery and the motor by consuming a certain amount of electricity, thereby ensuring the high-performance operation of the power battery and the motor. comfortabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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