CN111942099A - Heat exchange system and vehicle - Google Patents
Heat exchange system and vehicle Download PDFInfo
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- CN111942099A CN111942099A CN201910414287.5A CN201910414287A CN111942099A CN 111942099 A CN111942099 A CN 111942099A CN 201910414287 A CN201910414287 A CN 201910414287A CN 111942099 A CN111942099 A CN 111942099A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 178
- 239000000110 cooling liquid Substances 0.000 claims abstract description 71
- 239000002826 coolant Substances 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract description 10
- 239000002918 waste heat Substances 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a heat exchange system and a vehicle, wherein the heat exchange system comprises: the heat pump comprises a gas-liquid separator, a refrigerant compressor, a condenser and a refrigerant circulating pipe, wherein a gas output port of the gas-liquid separator is communicated with an input port of the refrigerant compressor through the refrigerant circulating pipe, an output port of the refrigerant compressor is communicated with an input port of the condenser through the refrigerant circulating pipe, and an output port of the condenser is communicated with an input port of the gas-liquid separator through the refrigerant circulating pipe; and the cooling liquid circulating pipe is connected with a heating part of the vehicle and a refrigerant circulating pipe and is used for transferring the heat of the heating part to the refrigerant circulating pipe. Like this, utilize the coolant liquid to collect the waste heat of the part that generates heat and provide the heat for the refrigerant circulation, the refrigerant is heated the evaporation and is carried out normal heat transfer circulation, effectively solves the refrigerant and evaporates the difficulty under low temperature environment and lead to the lower technical problem of heat exchange efficiency, reduces the electric work consumption of refrigerant circulation in-process, and then reduces the decay of whole car continuation of the journey mileage under the heating operating mode.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a heat exchange system and a vehicle.
Background
Heat exchange systems have been widely used for heating rooms, workshops, and vehicles, for example, heat exchange systems used in electric vehicles use refrigerant circulation to dissipate heat. The refrigerant is difficult to evaporate in a low-temperature environment, so that the heating effect of the heat exchange system is poor and even the heat exchange system cannot be started.
Therefore, the existing heat exchange system has the problem of poor heat exchange effect caused by difficult evaporation of the refrigerant in a low-temperature environment.
Disclosure of Invention
The embodiment of the invention provides a heat exchange system and a vehicle, and aims to solve the problem that an existing heat exchange system is poor in heat exchange effect due to the fact that a refrigerant is difficult to evaporate in a low-temperature environment.
In order to achieve the purpose, the invention provides the following specific scheme:
in a first aspect, an embodiment of the present invention provides a heat exchange system for a vehicle, where the heat exchange system includes:
the heat pump comprises a gas-liquid separator, a refrigerant compressor, a condenser and a refrigerant circulating pipe, wherein a gas output port of the gas-liquid separator is communicated with an input port of the refrigerant compressor through the refrigerant circulating pipe, an output port of the refrigerant compressor is communicated with an input port of the condenser through the refrigerant circulating pipe, and an output port of the condenser is communicated with an input port of the gas-liquid separator through the refrigerant circulating pipe; and the cooling liquid circulating pipe is connected with a heat-generating component of the vehicle and the refrigerant circulating pipe and is used for transferring the heat of the heat-generating component to the refrigerant circulating pipe.
Optionally, the coolant circulation pipe is further connected to a heat-requiring component of the vehicle, and the coolant circulation pipe is further configured to transfer heat of the heat-generating component to the heat-requiring component.
Optionally, the heat pump further comprises:
the refrigerant input port of the water-cooled heat exchanger is communicated with the condenser through the refrigerant circulating pipe, and the refrigerant output port of the water-cooled heat exchanger is communicated with the gas-liquid separator through the refrigerant circulating pipe;
the cooling liquid circulating pipe is connected with the water-cooling heat exchanger, and the water-cooling heat exchanger is used for absorbing heat in the cooling liquid circulating pipe and transmitting the absorbed heat to the refrigerant circulating pipe.
Optionally, the heat exchange system further includes:
and the cooling liquid circulation driving structure is communicated with the cooling liquid circulation pipe and is used for driving the flow of the cooling liquid in the cooling liquid circulation pipe.
Optionally, the cooling liquid circulation driving structure includes a first water pump and a second water pump, the first water pump is disposed at the water outlet of the cooling liquid circulation pipe, and the second water pump is disposed at the water inlet of the cooling liquid circulation pipe.
Optionally, the heat pump further comprises:
and the input port of the evaporator is communicated with the output port of the condenser through the refrigerant circulating pipe, and the output port of the evaporator is communicated with the input port of the gas-liquid separator through the refrigerant circulating pipe.
Optionally, the heat pump further comprises:
a first heater disposed proximate to the input port of the gas-liquid separator.
Optionally, the heat pump further comprises:
and the second heater is arranged close to the output port of the refrigerant compressor.
Optionally, the cooling liquid circulation pipe is further connected to a low-temperature radiator of the vehicle, and the cooling liquid circulation pipe is further used for transferring heat of the heat generating component to the low-temperature radiator.
Optionally, the cooling liquid circulation is respectively communicated with the heat dissipation component, the low-temperature radiator and the water-cooled heat exchanger through a first three-way electromagnetic valve; and/or the presence of a gas in the gas,
and the cooling liquid circulating pipe is respectively communicated with the heat radiating component, the heat-requiring component and the water-cooling heat exchanger through a second three-way electromagnetic valve.
In a second aspect, embodiments of the present invention further provide a vehicle, including a heat generating component, and the heat exchange system according to any one of the first aspect;
and a cooling liquid circulating pipe of the heat exchange system is connected with the heating part and a refrigerant circulating pipe of the heat exchange system, and the cooling liquid circulating pipe is used for transferring the heat of the heating part to the refrigerant circulating pipe.
Optionally, the vehicle further comprises:
the cooling liquid circulating pipe is also used for transferring the heat of the heating component to the heat-requiring component.
Optionally, the heat-requiring component includes a battery pack of the vehicle.
Optionally, the vehicle further comprises:
the cooling liquid circulating pipe is also connected with the low-temperature radiator and is also used for transferring the heat of the heating component to the low-temperature radiator.
Optionally, the heat generating component of the vehicle includes any one of a dc-dc power supply, a motor controller, and a driving motor.
In the embodiment of the invention, the heat exchange system applied to the vehicle mainly comprises a heat pump and a cooling liquid circulating pipe, wherein the heat pump comprises a gas-liquid separator, a refrigerant compressor and a condenser which are sequentially communicated through the refrigerant circulating pipe, the circulation of a refrigerant is realized in a matching manner, and the refrigerant releases heat in the condenser to supply heat for the vehicle. The cooling liquid circulating pipe is connected with a heating part of the vehicle and a refrigerant circulating pipe, and transfers heat emitted by the heating part to the refrigerant circulating pipe to provide partial heat for the refrigerant circulation of the refrigerant circulating pipe. Like this, utilize the coolant liquid to collect the waste heat of the part that generates heat and provide the heat for the refrigerant circulation for the refrigerant can be heated the evaporation and carry out normal heat transfer circulation, effectively solve the refrigerant and evaporate the difficulty under low temperature environment and lead to the lower technical problem of heat exchange efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a heat exchange system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another heat exchange system provided in the embodiment of the present invention;
FIG. 3 is a schematic view of a first operation flow of a heat exchange system according to an embodiment of the present invention;
FIG. 4 is a schematic view of a second operation flow of the heat exchange system according to the embodiment of the present invention;
fig. 5 is a schematic view of a third operation flow of the heat exchange system according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a heat exchange system according to an embodiment of the present invention, where the heat exchange system is applied to a vehicle. As shown in fig. 1, the heat exchange system 100 mainly includes:
the heat pump 110 comprises a gas-liquid separator 111, a refrigerant compressor 112, a condenser 113 and a refrigerant circulating pipe 114, wherein a gas output port of the gas-liquid separator 111 is communicated with an input port of the refrigerant compressor 112 through the refrigerant circulating pipe 114, an output port of the refrigerant compressor 112 is communicated with an input port of the condenser 113 through the refrigerant circulating pipe 114, and an output port of the condenser 113 is communicated with an input port of the gas-liquid separator 111 through the refrigerant circulating pipe 114;
a coolant circulation pipe 120, the coolant circulation pipe 120 connecting the heat-generating component 210 of the vehicle and the coolant circulation pipe 114, the coolant circulation pipe 120 for transferring heat of the heat-generating component 210 to the coolant circulation pipe 114.
In this embodiment, the heat exchanging system 100 includes a heat pump 110 and a coolant circulation pipe 120, and the heat pump 110 is connected to the coolant circulation pipe 120 to cooperate with a refrigerant to ensure heating and heat circulation and utilization in the vehicle. The heat pump 110 is an efficient energy-saving device that fully utilizes low-grade heat energy, and forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation manner, so that a large heat supply amount can be obtained only by consuming a small amount of net work of the reverse circulation, and the low-grade heat energy which is difficult to apply is effectively utilized to achieve the purpose of energy conservation. In this embodiment, the refrigerant used may be R134a refrigerant, and the heat energy exchange efficiency is high. The heat exchange efficiency is affected by the restriction of the characteristics of the refrigerant, and the evaporation of the refrigerant is difficult in a low-temperature environment, so that a scheme for heating the refrigerant needs to be added.
As shown in fig. 1, the heat pump 110 mainly includes: the air-liquid separator 111, the refrigerant compressor 112, the condenser 113 and the refrigerant circulating pipe 114, wherein the refrigerant circulating pipe 114 comprises a plurality of separated pipelines, and each pipeline can be used for realizing the circulation of the refrigerant between adjacent devices. Specifically, the gas outlet of the gas-liquid separator 111 is communicated with the inlet of the refrigerant compressor 112 through the refrigerant circulating pipe 114, the outlet of the refrigerant compressor 112 is communicated with the inlet of the condenser 113 through the refrigerant circulating pipe 114, and the outlet of the condenser 113 is communicated with the inlet of the gas-liquid separator 111 through the refrigerant circulating pipe 114, so that the circulation of the refrigerant among the gas-liquid separator 111, the refrigerant compressor 112 and the condenser 113 through the refrigerant circulating pipe 114 can be realized, heat exchange is performed, and further heating is realized.
The heat pump 110 operates by separating the gas and liquid of the received mixed refrigerant by the gas-liquid separator 111, delivering the separated low-temperature and low-pressure gaseous refrigerant to the refrigerant compressor 112, and compressing the received refrigerant by the refrigerant compressor 112 into a high-temperature and high-pressure gaseous refrigerant. An output port of the refrigerant compressor 112 is communicated with an input port of the condenser 113, and the high-temperature and high-pressure gaseous refrigerant is conveyed into the condenser 113 to dissipate heat, so that the vehicle is heated, and the refrigerant is changed into the high-pressure and medium-temperature liquid refrigerant.
A cooling liquid, which may be cooling water or the like, flows inside the cooling liquid circulation pipe 120. The coolant circulation pipe 120 is connected to a heat-generating component 210 of the vehicle, and the heat-generating component 210 concerned may include: a dc-dc power supply 211, a motor controller 212, and a drive motor 213. When the cooling liquid flows through the heat generating component 210, the cooling liquid absorbs the heat emitted from the heat generating component 210, and the temperature of the cooling liquid itself increases. In addition, the coolant circulation pipe 120 is connected to the coolant circulation pipe 114 of the heat pump 110, so that when the coolant flows through the coolant circulation pipe 114, the coolant and the coolant perform heat exchange, and the heat absorbed by the coolant is transferred to the coolant, thereby providing heat for the coolant in the coolant circulation pipe 114. The cooling liquid decreases in temperature and flows back to the heat generating component 210 along the cooling liquid circulation pipe 120 to continue absorbing heat. The refrigerant absorbs heat and then the temperature rises, and the liquid refrigerant is changed into the gaseous refrigerant.
Optionally, the cooling liquid circulation pipe 120 is connected to a pipe in the cooling medium circulation pipe 114 between the output port of the condenser 113 and the gas-liquid separator 111, and provides heat for the cooling medium in the pipe, so that the liquid cooling medium output by the condenser 113 is changed into a gaseous cooling medium and enters the gas-liquid separator 111, and the total amount of the gaseous cooling medium participating in circulation is increased.
The heat exchange system provided by the embodiment of the invention mainly comprises a heat pump and a cooling liquid circulating pipe, wherein the heat pump comprises a gas-liquid separator, a refrigerant compressor and a condenser which are sequentially communicated through the refrigerant circulating pipe, the circulation of a refrigerant is realized in a matching manner, and the refrigerant releases heat in the condenser to supply heat for a vehicle. The cooling liquid circulating pipe is connected with a heating part of the vehicle and a refrigerant circulating pipe, and transfers heat emitted by the heating part to the refrigerant circulating pipe to provide partial heat for the refrigerant circulation of the refrigerant circulating pipe. Like this, utilize the coolant liquid to collect the waste heat of the part that generates heat for the refrigerant circulation provides the heat for the refrigerant can be heated the evaporation and carry out normal heat transfer circulation, effectively solve the refrigerant and evaporate the difficulty under low temperature environment and lead to the lower technical problem of heat exchange efficiency, reduce the electric power consumption of refrigerant circulation in-process, and then reduce the decay of whole car continuation of the journey mileage under the heating operating mode. Meanwhile, the cooling liquid circulating pipe also realizes the cooling of heating parts in the vehicle, a warm air core body is not required to be additionally arranged in the heat pump, the pipe is multipurpose, and the structure of a heat exchange system is simplified.
In one embodiment, as shown in fig. 1, the heat pump 110 may include:
a water-cooled heat exchanger 115, wherein a refrigerant inlet of the water-cooled heat exchanger 115 is communicated with the condenser 113 through the refrigerant circulating pipe 114, and a refrigerant outlet of the water-cooled heat exchanger 115 is communicated with the gas-liquid separator 111 through the refrigerant circulating pipe 114;
the cooling liquid circulation pipe 120 is connected to the water-cooled heat exchanger 115, and the water-cooled heat exchanger 115 is configured to absorb heat in the cooling liquid circulation pipe 120 and transfer the absorbed heat to the refrigerant circulation pipe 114.
In the present embodiment, a water-cooled heat exchanger 115 is added to the heat pump 110, the water-cooled heat exchanger 115 is connected between the condenser 113 and the gas-liquid separator 111 via a refrigerant circulation pipe 114, and the water-cooled heat exchanger 115 is also connected to a coolant circulation pipe 120. In this way, the water-cooled heat exchanger 115 may absorb heat in the coolant and transfer the absorbed heat to the refrigerant output through the condenser 113, so that the liquid refrigerant is gasified. The water-cooled heat exchanger 115 continuously exchanges heat with the coolant and the refrigerant, so that indirect heat transfer from the heat emitted from the heat generating component 210 to the refrigerant is realized, and the heat is effectively utilized.
In another embodiment, as shown in fig. 2, the coolant circulation tube 120 may be further connected to a heat-requiring component 220 of the vehicle, and the coolant circulation tube 120 is further used to transfer heat of the heat-generating component 210 to the heat-requiring component 220.
In the present embodiment, the coolant circulation pipe 120 is also used to transfer heat emitted from the heat generating component 210 to the heat requiring component 220 of the vehicle, so as to heat or keep warm the heat requiring component 220, thereby ensuring that the heat requiring component 220 can work normally. Specifically, the heat-generating component 220 may be a battery pack of a vehicle, and the coolant circulation tube 120 transfers heat emitted from the heat-generating component 210 to the heat-generating component 220 such as the battery pack, so that the battery pack can normally operate in a low-temperature environment, thereby ensuring normal driving of the vehicle.
In addition, as shown in fig. 2, the coolant circulation pipe 120 may be further connected to a low temperature radiator 230 of the vehicle, and the coolant circulation pipe 120 is further configured to transfer heat of the heat generating component 210 to the low temperature radiator 230, so as to realize heating in a low temperature environment.
Generally, after heat generated by a heat generating component is conducted to a heat sink, the heat radiated to the environment through the heat sink is at a human body safety temperature, so that the temperature in a vehicle is appropriate under the condition of ensuring safety.
In addition, the heat exchange system 100 may further include:
a coolant circulation driving structure communicating with the coolant circulation pipe 120 for driving the flow of the coolant in the coolant circulation pipe.
Specifically, as shown in fig. 2, the cooling liquid circulation driving structure includes a first water pump 131 and a second water pump 132, the first water pump 131 is disposed at the water outlet of the cooling liquid circulation pipe 120, and the second water pump 132 is disposed at the water inlet of the cooling liquid circulation pipe 120.
In the present embodiment, a cooling liquid circulation driving structure is added to drive the cooling liquid in the cooling liquid circulation pipe 120 to automatically flow, so as to realize the regular heat transfer between the heat generating component 210 and the cooling medium circulation pipe 114 and/or the heat requiring component 220. In a specific implementation, a first water pump 131 and a second water pump 132 are disposed in the coolant circulation pipe 120, the first water pump 131 is disposed in a water outlet pipe of the coolant circulation pipe 120, and is used for driving the coolant to flow out and flow to the heat generating component 210 for absorbing heat, and then flow to the coolant circulation pipe 114 and/or the heat requiring component 220 for releasing heat, and the second water pump 132 is used for recovering the coolant after absorbing and dissipating heat, and then is driven by the first water pump 131 for the next coolant circulation operation.
In this embodiment, by additionally providing the coolant driving structure, the coolant can be automatically circulated in an auxiliary manner, thereby improving the heat transfer efficiency.
In another embodiment, as shown in fig. 2, the heat exchange system 100 may further include:
an evaporator 116, an input port of the evaporator 116 is communicated with an output port of the condenser 113 through the refrigerant circulation pipe 114, and an output port of the evaporator 116 is communicated with an input port of the gas-liquid separator 111 through the refrigerant circulation pipe 114.
An evaporator 116 is additionally arranged in the vehicle, and the evaporator 116 is communicated between the condenser 113 and the gas-liquid separator 111 by a refrigerant circulating pipe 114, so that the liquid refrigerant output by the condenser 113 can obtain the heat in the surrounding environment absorbed by the evaporator 116, and the liquid refrigerant is changed into the gas refrigerant again and returns to the gas-liquid separator 111.
In addition, as shown in fig. 2, the heat pump 110 may further include:
a first heater 117, the first heater 117 being disposed near an input port of the gas-liquid separator 111.
In addition, as shown in fig. 2, the heat pump 110 may further include:
and a second heater 118, wherein the second heater 118 is disposed near an output port of the refrigerant compressor 112.
In the present embodiment, in order to further improve the evaporation efficiency of the refrigerant in the low temperature environment, the first heater 117 and the second heater 118 are added to assist the circulation process of the refrigerant. A first heater 117 is provided near the inlet of the gas-liquid separator 111 to heat the refrigerant introduced into the gas-liquid separator 111 so that the liquid refrigerant is vaporized as much as possible. A second heater 118 may be provided at the output of the refrigerant compressor 112 to increase the heat of the refrigerant entering the condenser 113.
The heat exchange system 100 is additionally provided with the first heater 117 and the second heater 118 to promote the circulation of the refrigerant and improve the heating efficiency of the refrigerant.
Further, as shown in fig. 2, the coolant circulation pipe 110 is respectively communicated with the heat radiating part 210, the low temperature radiator 230 and the water-cooled heat exchanger 115 through a first three-way solenoid valve 141; and/or the presence of a gas in the gas,
the cooling liquid circulation pipe 110 is respectively communicated with the heat radiating part 210, the heat requiring part 220 and the water-cooled heat exchanger 115 through a second three-way solenoid valve 142.
The cooling liquid exchange between the three-terminal equipment is realized through the first three-way electromagnetic valve 141 and the second three-way electromagnetic valve 142, and the pipeline connection and the control are convenient.
In order to facilitate the control of the circulation process of the refrigerant and the cooling liquid, as shown in fig. 2, other valves, such as a stop valve 143, a one-way valve 144, a first electronic expansion valve 145, a second electronic expansion valve 146, etc., may be added to further improve the control sensitivity of the heat exchange system 100. The operation of the heat exchange system 100 will be specifically explained below with reference to three operation modes of the heat exchange system 100.
As shown in fig. 3, the first operation mode is: the heat pump 110 heats and the water-cooled heat exchanger 115 recovers the waste heat of the heat generating component 210.
When the heat pump 110 is used for heating, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor to be changed into a high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant is subjected to heat dissipation and heating by the condenser 113 to be changed into a high-pressure and medium-temperature liquid refrigerant. Then, the refrigerant enters the water-cooled heat exchanger 115 through the second electronic expansion valve 146 for heat exchange, and is changed into a low-temperature and low-pressure gaseous refrigerant again, and the gaseous refrigerant returns to the gas-liquid separator 111, that is, the refrigerant cycle of the heat pump 110 under the heating condition is completed.
The cooling liquid passes through the first water pump 131, then sequentially passes through the direct current-to-direct current power supply 211, the motor controller 212, the driving motor 213 and other heat generating components 210 to absorb heat, then enters the water-cooled heat exchanger 115 through the second three-way electromagnetic valve 143 to exchange heat, finally returns to the first water pump 131 through the second water pump 132, and continues to circulate next cooling liquid.
As shown in fig. 4, the second operation mode is: the waste heat of the heat generating component 210 is recovered to keep the temperature of the battery pack.
When the heat pump 110 is used for heating, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor to be changed into a high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant is subjected to heat dissipation and heating by the condenser 113 to be changed into a high-pressure and medium-temperature liquid refrigerant. Then, the refrigerant enters the evaporator 116 through the first electronic expansion valve 145 to perform heat exchange, and is changed into a high-temperature and high-pressure gaseous refrigerant again to return to the gas-liquid separator 111, that is, the refrigerant cycle of the heat pump 110 under the heating condition is completed.
The cooling liquid passes through the first water pump 131, then sequentially passes through the direct current-to-direct current power supply 211, the motor controller 212, the driving motor 213 and other heat generating components 210 to absorb heat, then enters the battery pack through the first three-way electromagnetic valve 141 to exchange heat, finally returns to the first water pump 131 through the second water pump 132 to continue the next cooling liquid circulation, so that heat is provided for the battery pack while heat is dissipated by the heat generating components 210.
As shown in fig. 5, the third operation mode is: the waste heat of the heat generating component 210 is recovered for battery pack insulation and water-cooled heat exchanger 115 recovery.
When the heat pump 110 is used for heating, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor to be changed into a high-temperature and high-pressure gaseous refrigerant, and the gaseous refrigerant is subjected to heat dissipation and heating by the condenser 113 to be changed into a high-pressure and medium-temperature liquid refrigerant. Then, a part of the refrigerant enters the water-cooling heat exchanger 115 through the second electronic expansion valve 146 to undergo heat exchange, and is changed into a low-temperature and low-pressure gaseous refrigerant again to return to the gas-liquid separator 111, and another part of the refrigerant enters the evaporator 116 through the first electronic expansion valve 145 to undergo heat exchange, and is changed into a high-temperature and high-pressure gaseous refrigerant again to return to the gas-liquid separator 111, that is, the refrigerant cycle of the heating condition of the heat pump 110 is completed.
The cooling liquid passes through the first water pump 131, then sequentially passes through the direct current-to-direct current power supply 211, the motor controller 212, the driving motor 213 and other heat generating components 210 to absorb heat, part of the cooling liquid enters the battery pack through the first three-way electromagnetic valve 141 to exchange heat, finally returns to the first water pump 131 through the second water pump 132, the other part of the cooling liquid enters the water-cooling heat exchanger 115 through the second three-way electromagnetic valve 142 to exchange heat, finally returns to the first water pump 131 through the second water pump 132 to continue the next cooling liquid circulation, and provides heat preservation for the battery pack and heat recovery for the water-cooling heat exchanger 115.
An embodiment of the present invention further provides a vehicle, including a heat generating component, and a heat exchanging system, where the heat exchanging system may be the heat exchanging system in the embodiment shown in fig. 1 to 5;
and a cooling liquid circulating pipe of the heat exchange system is connected with the heating part and a refrigerant circulating pipe of the heat exchange system, and the cooling liquid circulating pipe is used for transferring the heat of the heating part to the refrigerant circulating pipe.
Optionally, the vehicle further comprises:
the cooling liquid circulating pipe is also used for transferring the heat of the heating component to the heat-requiring component.
Optionally, the heat-requiring component includes a battery pack of the vehicle.
Optionally, the vehicle further comprises:
the cooling liquid circulating pipe is also connected with the low-temperature radiator and is also used for transferring the heat of the heating component to the low-temperature radiator.
Optionally, the heat generating component of the vehicle includes any one of a dc-dc power supply, a motor controller, and a driving motor.
In the embodiment of the invention, the heat exchange system of the vehicle mainly comprises a heat pump and a cooling liquid circulating pipe, wherein the heat pump comprises a gas-liquid separator, a refrigerant compressor and a condenser which are sequentially communicated through the refrigerant circulating pipe, the circulation of a refrigerant is realized in a matching manner, and the refrigerant releases heat in the condenser to supply heat for the vehicle. The cooling liquid circulating pipe is connected with a heating part of the vehicle and a refrigerant circulating pipe, and transfers heat emitted by the heating part to the refrigerant circulating pipe to provide partial heat for the refrigerant circulation of the refrigerant circulating pipe. Therefore, the waste heat of the heating components is collected by the cooling liquid to provide heat for the refrigerant circulation, the cooling of the heating components in the vehicle is realized, the electric power consumption in the refrigerant circulation process is reduced, and the attenuation of the endurance mileage of the whole vehicle under the heating working condition is further reduced. And a warm air core body does not need to be additionally arranged in the heat pump, so that the structure of a heat exchange system is simplified. The specific implementation process of the vehicle according to the embodiment of the present invention may refer to the specific implementation process of the heat exchange system according to the embodiment shown in fig. 1 to fig. 5, and details are not repeated here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A heat exchange system, for use in a vehicle, the heat exchange system comprising:
the heat pump comprises a gas-liquid separator, a refrigerant compressor, a condenser and a refrigerant circulating pipe, wherein a gas output port of the gas-liquid separator is communicated with an input port of the refrigerant compressor through the refrigerant circulating pipe, an output port of the refrigerant compressor is communicated with an input port of the condenser through the refrigerant circulating pipe, and an output port of the condenser is communicated with an input port of the gas-liquid separator through the refrigerant circulating pipe;
and the cooling liquid circulating pipe is connected with a heat-generating component of the vehicle and the refrigerant circulating pipe and is used for transferring the heat of the heat-generating component to the refrigerant circulating pipe.
2. The heat exchange system of claim 1, wherein the coolant circulation tube is further connected to a heat-requiring component of the vehicle, the coolant circulation tube being further configured to transfer heat from the heat-generating component to the heat-requiring component.
3. The heat exchange system of claim 2, wherein the heat pump further comprises:
the refrigerant input port of the water-cooled heat exchanger is communicated with the condenser through the refrigerant circulating pipe, and the refrigerant output port of the water-cooled heat exchanger is communicated with the gas-liquid separator through the refrigerant circulating pipe;
the cooling liquid circulating pipe is connected with the water-cooling heat exchanger, and the water-cooling heat exchanger is used for absorbing heat in the cooling liquid circulating pipe and transmitting the absorbed heat to the refrigerant circulating pipe.
4. The heat exchange system of claim 1, further comprising:
and the cooling liquid circulation driving structure is communicated with the cooling liquid circulation pipe and is used for driving the flow of the cooling liquid in the cooling liquid circulation pipe.
5. The heat exchange system of claim 4, wherein the coolant circulation driving structure comprises a first water pump and a second water pump, the first water pump is disposed at the water outlet of the coolant circulation pipe, and the second water pump is disposed at the water inlet of the coolant circulation pipe.
6. The heat exchange system of claim 1, further comprising:
and the input port of the evaporator is communicated with the output port of the condenser through the refrigerant circulating pipe, and the output port of the evaporator is communicated with the input port of the gas-liquid separator through the refrigerant circulating pipe.
7. The heat exchange system of claim 1, wherein the heat pump further comprises:
a first heater disposed proximate to the input port of the gas-liquid separator.
8. The heat exchange system of claim 1, wherein the heat pump further comprises:
and the second heater is arranged close to the output port of the refrigerant compressor.
9. The heat exchange system of claim 3, wherein the coolant circulation tube is further connected to a low temperature radiator of the vehicle, the coolant circulation tube being further configured to transfer heat of the heat generating component to the low temperature radiator.
10. The heat exchange system according to claim 9, wherein the cooling liquid circulation is respectively communicated with the heat dissipation part, the low-temperature heat sink and the water-cooled heat exchanger through a first three-way solenoid valve; and/or the presence of a gas in the gas,
and the cooling liquid circulating pipe is respectively communicated with the heat radiating component, the heat-requiring component and the water-cooling heat exchanger through a second three-way electromagnetic valve.
11. A vehicle characterized by comprising a heat generating component, and the heat exchange system according to any one of claims 1 to 10;
and a cooling liquid circulating pipe of the heat exchange system is connected with the heating part and a refrigerant circulating pipe of the heat exchange system, and the cooling liquid circulating pipe is used for transferring the heat of the heating part to the refrigerant circulating pipe.
12. The vehicle of claim 11, further comprising:
the cooling liquid circulating pipe is also used for transferring the heat of the heating component to the heat-requiring component.
13. The vehicle of claim 12, wherein the heat-requiring component comprises a battery pack of the vehicle.
14. The vehicle of claim 2, further comprising:
the cooling liquid circulating pipe is also connected with the low-temperature radiator and is also used for transferring the heat of the heating component to the low-temperature radiator.
15. The vehicle according to any one of claims 11 to 14, characterized in that the heat generating component of the vehicle includes any one of a dc-dc power supply, a motor controller, and a drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414287.5A CN111942099A (en) | 2019-05-17 | 2019-05-17 | Heat exchange system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414287.5A CN111942099A (en) | 2019-05-17 | 2019-05-17 | Heat exchange system and vehicle |
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| Publication Number | Publication Date |
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| CN111942099A true CN111942099A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910414287.5A Pending CN111942099A (en) | 2019-05-17 | 2019-05-17 | Heat exchange system and vehicle |
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Application publication date: 20201117 |