CN114590096A - Thermal management system and automobile - Google Patents

Thermal management system and automobile Download PDF

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Publication number
CN114590096A
CN114590096A CN202110350875.4A CN202110350875A CN114590096A CN 114590096 A CN114590096 A CN 114590096A CN 202110350875 A CN202110350875 A CN 202110350875A CN 114590096 A CN114590096 A CN 114590096A
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CN
China
Prior art keywords
warm air
loop
refrigerant
management system
heat
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Pending
Application number
CN202110350875.4A
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Chinese (zh)
Inventor
宋大力
郭玉学
丁国峰
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Publication date
Application filed by Great Wall Motor Co Ltd filed Critical Great Wall Motor Co Ltd
Priority to CN202110350875.4A priority Critical patent/CN114590096A/en
Publication of CN114590096A publication Critical patent/CN114590096A/en
Pending legal-status Critical Current

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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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • 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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The invention is suitable for the technical field of vehicles, and provides a thermal management system and an automobile. The heat management system comprises a refrigerant loop, a first warm air loop and a second warm air loop, wherein the refrigerant loop is provided with a liquid cooling condenser and communicated with the liquid cooling condenser, and the second warm air loop is communicated with the liquid cooling condenser and used for exchanging heat with the refrigerant loop. According to the heat management system provided by the invention, the first warm air loop which is relatively independent from the refrigerant loop and is provided with the heater and the second warm air loop which exchanges heat with the refrigerant loop are arranged, so that the high pressure ratio of the refrigerant loop caused by the second warm air loop in low-temperature use is avoided, the lower limit of the working temperature of the refrigerant loop is reduced, and the waste of heat generated by the heater in the environment is avoided.

Description

Thermal management system and automobile
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to a thermal management system and an automobile.
Background
In order to reduce the heating energy consumption of the air conditioner, more and more new energy automobiles adopt a heat pump air conditioning system. In order to reduce the risk of electric leakage caused by a high-voltage PTC (Positive Temperature Coefficient) heater, when most vehicles are designed with a thermal management framework, a water heating PTC heater is used for heating, and the PTC heater and cooling liquid exchange heat to achieve the purpose of heating a passenger compartment, while a heat pump air conditioner is used as another heat source for heating, and the heat pump and the PTC heater can only heat the cooling liquid through a liquid cooling condenser and provide the cooling liquid for heating of the vehicles.
Due to the heating and heat dissipation requirements of various passenger cabins and batteries of the whole vehicle heat management and the sharing of cooling liquid, the vehicle has the following disadvantages: the liquid cooling condenser dissipates heat during heating, and the return water temperature of the warm air core is too high, so that the high pressure of one side of the refrigerant loop is very high during heating, and the low pressure is very low for absorbing heat from low temperature, so that a large pressure ratio (pressure ratio of high pressure to low pressure) is formed, the large pressure ratio is not beneficial to the reliability of a compressor in the refrigerant loop, and the flow of the refrigerant is limited to influence the heat absorption effect.
Disclosure of Invention
The invention provides a thermal management system which can reduce the pressure ratio of a refrigerant circuit.
In order to achieve the above object, the present invention adopts a technical solution in which a thermal management system is provided, including:
a refrigerant loop communicated with the liquid cooling condenser is arranged;
the first warm air loop comprises a first pump, a heater and a first warm air core body which are connected in series; and
and the second warm air loop is communicated with the liquid cooling condenser and used for exchanging heat with the refrigerant loop and comprises a second pump and a second warm air core body which are connected in series.
Further, the first warm air loop further comprises a first overflow tank connected in series with the first pump, the heater and the first warm air core.
Furthermore, the second warm air loop also comprises a second water overflow tank connected with the second pump, the liquid cooling condenser and the second warm air core in series.
Compared with the prior art, the heat management system provided by the invention has the advantages that the first warm air loop which is relatively independent from the refrigerant loop and is provided with the heater and the second warm air loop which exchanges heat with the refrigerant loop are arranged, so that the large pressure ratio of the refrigerant loop caused by the second warm air loop in low-temperature use is avoided, the lower limit of the working temperature of the refrigerant loop is reduced, and the waste of heat generated by the heater in the environment is avoided.
It is another object of the present invention to provide another thermal management system, comprising:
a refrigerant loop communicated with the liquid cooling condenser is arranged; and
the first warm air loop is selectively communicated with the liquid cooling condenser and comprises a first pump, a heater and a first warm air core body which are connected in series.
Further, the first warm air circuit further comprises a three-way valve having a heat exchange state in which the refrigerant circuit exchanges heat with the first warm air circuit and a separated state in which the refrigerant circuit does not exchange heat with the first warm air circuit; when the three-way valve is in a heat exchange state, the liquid-cooled condenser is connected with the first warm air loop in series; when the three-way valve is in a separation state, working medium in the first warm air loop does not flow through the liquid cooling condenser.
Further, the liquid cooling condenser has working medium import and working medium export, first warm braw return circuit has head end and end, the head end with working medium import intercommunication, the three-way valve has first inlet, second inlet and liquid outlet, first inlet optionally with the head end intercommunication, the second inlet optionally with working medium export intercommunication, the liquid outlet with end intercommunication.
Furthermore, the first warm air loop also comprises a first overflow tank which is connected with the first pump, the heater and the first warm air core body in series.
Compared with the prior art, the heat management system provided by the invention has the advantages that the first warm air loop which can optionally exchange heat with the refrigerant loop is arranged, so that the high pressure ratio of the refrigerant loop is avoided when the heat management system is used at low temperature, the lower limit of the working temperature of the refrigerant loop is reduced, and the waste of heat generated by the heater in the environment is avoided at low temperature.
It is a further object of the present invention to provide an automobile including a thermal management system as described above.
Drawings
FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a thermal management system according to a second embodiment of the present invention.
In the figure: 100. a first warm air loop; 110. a first pump; 120. a first warm air core body; 130. a heater; 140. a first overflow tank; 150. a three-way valve; 200. a second warm air circuit; 210. a second pump; 220. a second warm air core body; 230. a second overflow tank; 300. a refrigerant circuit; 310. a liquid-cooled condenser; 400. a fan.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, are used for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
Example one
Referring to fig. 1, a first embodiment of the thermal management system of the present invention will now be described. The thermal management system is applied to a vehicle and comprises a first warm air circuit 100, a second warm air circuit 200 and a refrigerant circuit 300. The refrigerant circuit 300 is a conventional technology, and a refrigerant circulates in the circuit, so that heat exchange and cooling can be performed on a battery of a new energy automobile, and the refrigerant can generally selectively exchange heat with the outside. The refrigerant circuit 300 is provided with a liquid-cooled condenser 310.
The second warm air loop 200 is communicated with the liquid-cooled condenser 310, that is, the working medium in the second warm air loop 200 flows through the liquid-cooled condenser 310 and exchanges heat with the refrigerant loop 300, specifically, the working medium in the second warm air loop 200 is heated in the liquid-cooled condenser 310, and the refrigerant is cooled in the liquid-cooled condenser 310. The second warm air loop 200 includes at least a second pump 210 and a second warm air core 220 connected in series, although the second warm air loop 200 is necessarily provided with corresponding connecting pipes. The second pump 210 is used for providing power for the working medium circulation in the second warm air loop 200, and the working medium obtains heat in the liquid cooling condenser 310 and then flows to the second warm air core 220 for heat dissipation. The heat source of the second warm air circuit 200 is the supply from the refrigerant circuit 300.
The first warm air circuit 100 includes a first pump 110, a heater 130, and a first warm air core 120 connected in series. The first warm air circuit 100 is relatively independent from the second warm air circuit 200 and the refrigerant circuit 300. The first pump 110 is used for providing power for the working medium circulation in the first warm air loop 100, and the working medium is heated in the heater 130 to obtain heat, and then flows to the first warm air core 120 for heat dissipation.
In the present embodiment, the second heater core 220 and the first heater core 120 are used together as a heat source of the air conditioner, and the fan 400 of the air conditioner blows the heat generated by the second heater core 220 and the first heater core 120 to the passenger compartment by blowing air. Of course, the refrigerant circuit 300, the first warm air circuit 100 (or the first pump 110 and the heater 130), and the second warm air circuit 200 (or the second pump 210) are controlled by the vehicle computer system.
Thus, the thermal management system according to the first embodiment of the present invention has a set of second heater circuits 200, which are provided with heat sources by the refrigerant circuits 300, and a set of first heater circuits 100, which are capable of generating heat sources by themselves (i.e., are independent of the refrigerant circuits 300), and the first heater circuits 100 and the second heater circuits 200 do not interfere with each other, and the first heater circuits 100 and the refrigerant circuits 300 do not interfere with each other. The heat source of the first warm air circuit 100 (i.e., generated by the heater 130) does not exchange heat with the refrigerant circuit 300, and the refrigerant circuit 300 serves as a heat source provider to provide heat for the second warm air circuit 200, so that when the air conditioner is used in a low-temperature environment, because the working medium temperature in the second warm air circuit 200 is not high, the refrigerant circuit 300 hardly generates a large pressure ratio as in the prior art, and the compressor discharge pressure and discharge temperature are low, the heat absorption effect of the refrigerant circuit 300 (i.e., the heat dissipation effect of the battery) is not affected. Therefore, the present embodiment can avoid the influence of the high return water temperature of the second warm air circuit 200 on the refrigerant circuit 300, and the lower limit of the operating temperature of the refrigerant circuit 300 can be greatly reduced, and simultaneously, the heating efficiency at low temperature can be improved.
When the automobile needs battery heat dissipation and the passenger compartment needs warm air, the refrigerant loop 300 is started to dissipate the heat of the battery, the second warm air loop 200 exchanges heat with the refrigerant loop 300, and the first warm air loop 100 is started as required (if the heat provided by the second warm air core 220 is enough for the passenger compartment, the first warm air loop 100 can not be started, if the heat provided by the second warm air core 220 is not enough, the first warm air loop 100 is started, and in addition, after the room temperature of the passenger compartment reaches a calibrated value, the first warm air loop 100 can not be started).
In addition, the high-power output of the battery of the existing pure electric vehicle inevitably causes the temperature rise of the battery in use, and the correlation with the ambient temperature is very small, so that the air conditioner is possibly required to radiate the heat of the battery at any ambient temperature. The battery heat dissipation needs to release a large amount of heat, and when the temperature of the passenger compartment reaches a temperature target, the warm air loop does not need to exchange heat with the refrigerant loop 300 any more, and the refrigerant loop 300 can only exchange heat with the outdoor environment to dissipate the heat of the battery, but the refrigerant loop 300 passes through the liquid-cooled condenser, and heat exchange is still inevitably generated between the refrigerant side and the warm air loop on the liquid-cooled condenser, which can lead the heat heated by the heater to be taken out to the environment by the refrigerant, and thus energy loss is caused. In the present embodiment, the first heater circuit 100 does not exchange heat with the refrigerant circuit 300, and the heat generated by the first heater circuit 100 (i.e. the heater 130) is substantially sent to the passenger compartment through the first heater core 120, and is not wasted in the environment due to heat exchange with the refrigerant circuit 300 as in the prior art.
Compared with the prior art, the heat management system provided by the embodiment of the invention has the advantages that the first warm air loop which is relatively independent from the refrigerant loop and is provided with the heater and the second warm air loop which exchanges heat with the refrigerant loop are arranged, so that the high pressure ratio of the refrigerant loop caused by the second warm air loop in low-temperature use is avoided, the lower limit of the working temperature of the refrigerant loop is reduced, and the waste of heat generated by the heater in the environment is avoided.
As a specific embodiment of the thermal management system provided by the present invention, the refrigerant circuit 300 includes, in addition to the liquid-cooled condenser 310, a compressor, a pressure-reducing throttling device (such as a capillary tube or an expansion valve), an outdoor radiator, and the like, and the liquid-cooled condenser 310, the compressor, the pressure-reducing throttling device, the outdoor radiator, and the like are connected in series, and the refrigerant circuit 300 is the prior art and will not be described herein again. The liquid cooling condenser 310 has a refrigerant inlet, a refrigerant outlet, a working medium inlet and a working medium outlet, the refrigerant inlet and the refrigerant outlet are connected to the refrigerant circuit 300, and the working medium inlet and the working medium outlet are connected to the second warm air circuit 200.
As a specific embodiment of the thermal management system provided by the present invention, the heater 130 is a water heating type PTC heater.
Referring to fig. 1, as an embodiment of the thermal management system provided in the present invention, the first warm air circuit 100 further includes a first overflow tank 140. The first overflow tank 140, the first pump 110, the heater 130, and the first heater core 120 are connected in series.
Referring to fig. 1, as an embodiment of the thermal management system provided in the present invention, the second warm air loop 200 further includes a second overflow tank 230. The second overflow tank 230, the liquid-cooled condenser 310, the second pump 210, and the second warm air core 220 are connected in series.
Referring to fig. 1, as an embodiment of the thermal management system provided by the present invention, in the second warm air loop 200, the second pump 210, the liquid-cooled condenser 310, the second overflow tank 230 and the second warm air core 220 are sequentially connected in series along the flowing direction of the working medium to form a loop.
As a specific embodiment of the thermal management system provided by the present invention, the working mediums in the second warm air circuit 200 and the first warm air circuit 100 are both aqueous solutions.
Example two
Referring to fig. 2, a second embodiment of the thermal management system of the present invention will now be described. The thermal management system, which is applied to a vehicle, includes a first warm air circuit 100 and a refrigerant circuit 300. The refrigerant circuit 300 is a conventional technology, and a refrigerant flows in the circuit, so that heat exchange and cooling can be performed on a battery of the new energy automobile, and the refrigerant can selectively exchange heat with the outside. A liquid-cooled condenser 310 is provided in the refrigerant circuit 300.
The first warm air circuit 100 includes a first pump 110, a heater 130, and a first warm air core 120 connected in series. The first pump 110 is used for providing power for the working medium circulation in the first warm air loop 100, and the working medium is heated in the heater 130 to obtain heat, and then flows to the first warm air core 120 for heat dissipation.
In the present embodiment, the first heater core 120 is used as a heat source of the air conditioner, and the fan 400 of the air conditioner blows the heat generated by the first heater core 120 toward the passenger compartment by blowing air. Of course, the refrigerant circuit 300 and the first heater circuit 100 (or the first pump 110 and the heater 130) are controlled by the driving computer system. The first warm air circuit 100 is selectively in communication with the liquid-cooled condenser 310, i.e., the first warm air circuit 100 is commanded to selectively exchange heat with the refrigerant circuit 300.
When the first warm air loop 100 is communicated with the liquid-cooled condenser 310, the liquid-cooled condenser 310 is connected in series with the first pump 110, the heater 130 and the first warm air core 120, the working medium of the first warm air loop 100 exchanges heat with the refrigerant loop 300 when flowing through the liquid-cooled condenser 310, usually, the working medium of the first warm air loop 100 obtains heat in the liquid-cooled condenser 310, and the refrigerant in the refrigerant loop 300 radiates heat in the liquid-cooled condenser 310.
When the first warm air circuit 100 is not communicated with the liquid-cooled condenser 310, the first warm air circuit 100 does not exchange heat with the refrigerant circuit 300, that is, the first warm air circuit 100 and the refrigerant circuit 300 operate independently, and the first warm air circuit 100 and the refrigerant circuit 300 do not interfere with each other.
Thus, the thermal management system provided by the second embodiment of the present invention has two states. Under the low-temperature environment, when the automobile needs battery heat dissipation and the passenger cabin needs warm air, the first warm air loop 100 is not communicated with the liquid cooling condenser 310, the refrigerant loop 300 and the first warm air loop 100 do not exchange heat, the refrigerant loop 300 and the first warm air loop 100 do not interfere with each other, the refrigerant loop 300 only provides cooling for the battery, and the first warm air loop 100 provides a heat source for the passenger cabin. Since the refrigerant circuit 300 does not exchange heat with the first warm air circuit 100, a large pressure ratio hardly occurs, and the compressor discharge pressure and discharge temperature are low, and therefore the heat absorption effect of the refrigerant circuit 300 (that is, the heat radiation effect of the battery) is not affected. Therefore, the present embodiment can avoid the influence of the high return temperature of the first warm air loop 100 on the refrigerant loop 300, the lower limit of the working temperature of the refrigerant loop 300 can be greatly reduced, the heating efficiency at low temperature is improved, and the heat of the first warm air loop 100 (through the liquid-cooled condenser 310) is prevented from being dissipated to the environment at low temperature.
When the ambient temperature is relatively high and the vehicle needs battery heat dissipation while the passenger compartment needs warm air, the first warm air loop 100 is communicated with the liquid-cooled condenser 310, the refrigerant loop 300 and the first warm air loop 100 perform heat exchange, the refrigerant loop 300 heats working media in the first warm air loop 100 through the liquid-cooled condenser 310, and the power output of the heater 130 is reduced.
Compared with the prior art, the heat management system provided by the embodiment of the invention has the advantages that the first warm air loop which can optionally exchange heat with the refrigerant loop is arranged, so that the high pressure ratio of the refrigerant loop is avoided when the heat management system is used at low temperature, the lower limit of the working temperature of the refrigerant loop is reduced, and the waste of heat generated by the heater in the environment is avoided at low temperature.
As a specific embodiment of the thermal management system provided in the present invention, the heater 130 is a water heating type PTC heater.
Referring to fig. 2, as an embodiment of the thermal management system provided in the present invention, the first warm air circuit 100 further includes a first overflow tank 140. The first overflow tank 140, the first pump 110, the heater 130, and the first heater core 120 are connected in series.
As a specific embodiment of the thermal management system provided by the present invention, the working medium in the first warm air loop 100 is an aqueous solution.
Referring to fig. 2, as an embodiment of the thermal management system according to the present invention, the first warm air circuit 100 further includes a three-way valve 150, and the three-way valve 150 is a component for selectively connecting the liquid-cooled condenser 310 and the first warm air circuit 100.
The three-way valve 150 has a heat exchange state in which the refrigerant circuit 300 exchanges heat with the first warm air circuit 100 and a separated state in which the refrigerant circuit 300 does not exchange heat with the first warm air circuit 100. When three-way valve 150 is in a heat exchange state, liquid-cooled condenser 310 is connected in series with first warm air circuit 100; when three-way valve 150 is in the disengaged state, the working fluid in first warm air circuit 100 does not flow through liquid-cooled condenser 310, and at this time, liquid-cooled condenser 310 is "short-circuited" by the working fluid in first warm air circuit 100.
As a specific embodiment of the thermal management system provided in the present invention, three-way valve 150 may be a two-position one-way solenoid valve, and of course, three-way valve 150 should also be controlled by an instruction from a driving computer system.
Referring to fig. 2, as an embodiment of the thermal management system provided by the present invention, the liquid-cooled condenser 310 has a working medium inlet and a working medium outlet, and the first warm air loop 100 as a loop can be considered to have a head end and a tail end, and of course, the head end and the tail end can be considered to be any two adjacent positions (points) in the first warm air loop 100, the head end can be considered to be a starting point of a loop cycle, and the tail end can be considered to be an ending point of the loop cycle.
The head end of the first warm air loop 100 is communicated with the working medium inlet. The three-way valve 150 has a first inlet port, a second inlet port and a liquid outlet port, the first inlet port is selectively communicated with the head end of the first warm air loop, the second inlet port is selectively communicated with the working medium outlet port, and the liquid outlet port is always communicated with the tail end of the first warm air loop. The first liquid inlet and the second liquid inlet can not be communicated simultaneously, when the first liquid inlet is communicated with the head end of the first warm air loop, the second liquid inlet is not communicated with the working medium outlet, at the moment, the liquid-cooled condenser 310 is in short circuit connection, and the working medium in the first warm air loop 100 can not flow through the liquid-cooled condenser 310; when the first liquid inlet is not communicated with the head end of the first warm air loop, the second liquid inlet is communicated with the working medium outlet, and at the moment, the working medium in the first warm air loop 100 flows through the liquid-cooled condenser 310.
As a specific embodiment of the thermal management system provided by the present invention, the refrigerant circuit 300 includes, in addition to the liquid-cooled condenser 310, a compressor, a pressure-reducing throttling device (such as a capillary tube or an expansion valve), an outdoor radiator, and the like, and the liquid-cooled condenser 310, the compressor, the pressure-reducing throttling device, the outdoor radiator, and the like are connected in series, and the refrigerant circuit 300 is the prior art and will not be described herein again. The liquid-cooled condenser 310 has a refrigerant inlet and a refrigerant outlet in addition to the working medium inlet and the working medium outlet, the refrigerant inlet and the refrigerant outlet are connected to the refrigerant circuit 300, and the working medium inlet and the working medium outlet are connected to the second warm air circuit 200.
Referring to fig. 2, as an embodiment of the thermal management system according to the present invention, when the liquid-cooled condenser 310 is connected to the first warm air loop 100, the first pump 110, the liquid-cooled condenser 310, the three-way valve 150, the heater 130, the first warm air core 120, and the first overflow tank 140 are connected in series in sequence along the flowing direction of the working medium to form a loop.
The invention further provides an automobile comprising the thermal management system in the embodiment.
Compared with the prior art, the automobile provided by the embodiment of the invention can avoid the large pressure ratio of the refrigerant circuit caused by low-temperature use, reduce the lower limit of the working temperature of the refrigerant circuit and avoid the waste of heat generated by the heater in the environment at low temperature.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A thermal management system, comprising:
a refrigerant loop communicated with the liquid cooling condenser is arranged;
the first warm air loop comprises a first pump, a heater and a first warm air core body which are connected in series; and
and the second warm air loop is communicated with the liquid cooling condenser and is used for exchanging heat with the refrigerant loop and comprises a second pump and a second warm air core body which are connected in series.
2. The thermal management system of claim 1, wherein said first warm air circuit further comprises a first spill tank connected in series with said first pump, said heater, and said first warm air core.
3. The thermal management system of claim 1, wherein said second warm air circuit further comprises a second flash tank in series with said second pump, liquid cooled condenser, and said second warm air core.
4. A thermal management system, comprising:
a refrigerant loop communicated with the liquid cooling condenser is arranged; and
the first warm air loop is selectively communicated with the liquid cooling condenser and comprises a first pump, a heater and a first warm air core body which are connected in series.
5. The thermal management system of claim 4, wherein the first warm air circuit further comprises a three-way valve having a heat exchange state in which the refrigerant circuit exchanges heat with the first warm air circuit and a separate state in which the refrigerant circuit does not exchange heat with the first warm air circuit; when the three-way valve is in a heat exchange state, the liquid-cooled condenser is connected with the first warm air loop in series; when the three-way valve is in a separation state, working medium in the first warm air loop does not flow through the liquid cooling condenser.
6. The thermal management system of claim 5, wherein said liquid cooled condenser has a working fluid inlet and a working fluid outlet, said first warm air circuit has a head end and a tail end, said head end in communication with said working fluid inlet, said three-way valve has a first inlet port, a second inlet port, and a liquid outlet port, said first inlet port in optional communication with said head end, said second inlet port in optional communication with said working fluid outlet port, said liquid outlet port in communication with said tail end.
7. The thermal management system of claim 4, further comprising a first spill tank in series with said first pump, said heater, and said first warm air core in said first warm air circuit.
8. Automobile, characterized in that it comprises a thermal management system according to any one of claims 1 to 7.
CN202110350875.4A 2021-03-31 2021-03-31 Thermal management system and automobile Pending CN114590096A (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN110039973A (en) * 2019-05-21 2019-07-23 威马智慧出行科技（上海）有限公司 A kind of heat management system of electric vehicle
CN209466956U (en) * 2018-11-29 2019-10-08 比亚迪股份有限公司 Vehicle heat management system and vehicle
CN111716993A (en) * 2020-06-23 2020-09-29 重庆长安新能源汽车科技有限公司 Low-energy-consumption heat management system
CN111746225A (en) * 2020-06-17 2020-10-09 北京新能源汽车股份有限公司 Electric automobile's thermal management system and electric automobile that has it
CN111791663A (en) * 2019-04-09 2020-10-20 广州汽车集团股份有限公司 Electric vehicle thermal management system
CN112406461A (en) * 2020-10-21 2021-02-26 东风汽车集团有限公司 Whole car thermal management system and electric motor car of electric motor car

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209466956U (en) * 2018-11-29 2019-10-08 比亚迪股份有限公司 Vehicle heat management system and vehicle
CN111791663A (en) * 2019-04-09 2020-10-20 广州汽车集团股份有限公司 Electric vehicle thermal management system
CN110039973A (en) * 2019-05-21 2019-07-23 威马智慧出行科技（上海）有限公司 A kind of heat management system of electric vehicle
CN111746225A (en) * 2020-06-17 2020-10-09 北京新能源汽车股份有限公司 Electric automobile's thermal management system and electric automobile that has it
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