CN116021945A - Compact thermal management system for vehicles - Google Patents
Compact thermal management system for vehicles Download PDFInfo
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- CN116021945A CN116021945A CN202111250721.4A CN202111250721A CN116021945A CN 116021945 A CN116021945 A CN 116021945A CN 202111250721 A CN202111250721 A CN 202111250721A CN 116021945 A CN116021945 A CN 116021945A
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- 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 provides a compact thermal management system for a vehicle, comprising a refrigerant loop and a cooling liquid loop; wherein the refrigerant circuit comprises a passenger compartment circuit and a battery circuit; comprises a compressor, a condenser, a refrigeration expansion valve and an evaporator; the compressor, the condenser, the refrigeration expansion valve and the evaporator are sequentially connected in series through pipelines; the battery loop comprises a compressor, a condenser, a cold water machine expansion valve and a cold water machine; the compressor, the condenser, the expansion valve of the water chiller and the water chiller are sequentially connected in series to form a closed loop; the cooling liquid loop comprises a water chiller, a heat exchanger of a power battery, a water pump and an electric heating device, and the water chiller, the power battery, the water pump and the electric heating device are sequentially connected in series to form a closed loop; the thermal management system provided by the patent has the advantages that the structure is compact, all parts can be integrated in a small space, the function is complete, the comfort level is excellent, the weight is light, the efficiency is high, the refrigerating/heating of the passenger compartment and the cooling/heating of the battery can be realized at the same time, and the comfort of the passenger compartment and the safety of the battery are ensured.
Description
Technical Field
The present invention relates to thermal management systems, and more particularly to thermal management systems for compact vehicles.
Background
By 2030, more than 60% of the world population will live in the city and traffic congestion will become more severe. The air travel is carried out in the city, which is the best scheme for dealing with the urban travel challenges, and the market potential of the urban air taxis is huge. The thermal management system of the electric vehicle directly determines the comfort of the passenger cabin, the endurance of the battery and the service life of the battery; the household air conditioning system comprises the four-way reversing valve, so that the flow direction of the refrigerant can be controlled, and the household air conditioning system can realize the functions of refrigeration and heating. The air conditioning system of the new energy electric vehicle is different from a household air conditioning system, a four-way reversing valve is not adopted in the vehicle-mounted air conditioning system of the new energy electric vehicle, only a refrigerating function can be realized under the condition, and in order to realize passenger cabin heat pump and battery heating, one of the prior patent schemes is to add a water-cooling condenser except for two heat exchangers, namely an outdoor condenser and an indoor evaporator, in a refrigerant loop, heat exchange is carried out between a high-temperature refrigerant and cooling liquid, the temperature of the cooling liquid is improved, and a heating function is realized through a cooling liquid loop. Because of adding a water-cooled condenser and related connecting pipelines, the scheme of the vehicle type (such as a flying vehicle) with high weight requirement needs to be further optimized. On the other hand, in the prior art, in the water-cooling condenser heating process, the heat of the refrigerant is required to be transferred to the circulating cooling liquid, and the circulating cooling liquid exchanges heat with air, so that the requirement is met, and the process needs two heat exchange processes, and the heat exchange efficiency is lower.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a compact thermal management system for vehicles, which is used for solving the problem that the total weight of vehicles is increased and the total weight requirement of vehicles is not satisfied after adding a water-cooled condenser and related connecting pipelines in a refrigeration circuit in the prior art; and the problems of reducing the heat exchange process and improving the heat exchange efficiency are solved.
To achieve the above and other related objects, the present invention provides a thermal management system for a compact vehicle, including a refrigerant circuit and a coolant circuit; the refrigerant circuit comprises a passenger cabin circuit and a battery circuit, wherein the passenger cabin circuit comprises a condenser and an evaporator; the evaporator is connected with a cold air duct for introducing cold air subjected to heat exchange by the evaporator into the passenger cabin; the condenser is connected with a warm air duct for introducing warm air after heat exchange of the condenser into the passenger cabin.
In an embodiment of the invention, the passenger compartment circuit further comprises a compressor and a refrigeration expansion valve, the compressor, the condenser, the refrigeration expansion valve, and the evaporator each comprising a first port and a second port; the first port of the compressor is communicated with the second port of the condenser, the first port of the condenser is communicated with the second port of the refrigeration expansion valve, the first port of the refrigeration expansion valve is communicated with the second port of the evaporator, and the first port of the evaporator is communicated with the second port of the compressor.
In an embodiment of the invention, the cooling liquid loop comprises a water chiller, a battery heat exchanger, a water pump and an electric heating device; the water chiller, the battery heat exchanger, the electric heating device and the water pump all comprise a first port and a second port; the first port of the water cooler is communicated with the second port of the electric heating device, the first port of the electric heating device is communicated with the second port of the water pump, the first port of the water pump is communicated with the second port of the battery heat exchanger, and the first port of the battery heat exchanger is communicated with the second port of the water cooler.
In an embodiment of the invention, the battery circuit includes the compressor, the condenser, the chiller expansion valve, and the chiller; the water chiller further comprises a third port and a fourth port, and the water chiller expansion valve comprises a first port and a second port; in the battery loop, a first port of the compressor is communicated with a second port of the condenser, the first port of the condenser is communicated with a second port of the expansion valve of the water chiller, the first port of the expansion valve of the water chiller is communicated with a fourth port of the water chiller, and a third port of the water chiller is communicated with a second port of the compressor.
In an embodiment of the invention, the cold air duct further includes a first cold air port and a second cold air port, wherein the first cold air port is communicated with the passenger compartment, and the second cold air port is communicated with the outside.
In an embodiment of the invention, the compact thermal management system for a vehicle further includes a cool air switch for switching a cool air outlet channel.
In an embodiment of the invention, the warm air duct further includes a first warm air port and a second warm air port, wherein the first warm air port is communicated with the passenger compartment, and the second warm air port is communicated with the outside.
In an embodiment of the invention, the compact thermal management system for a vehicle further includes a warm air switch for switching a warm air outlet channel.
In one embodiment of the present invention, the compact thermal management system for a vehicle further comprises an indoor fan connected to the right end of the evaporator.
In one embodiment of the invention, the compact thermal vehicle management system further comprises an outdoor fan connected to the right end of the condenser.
As described above, the thermal management system for a compact vehicle of the present invention has the following advantageous effects:
(1) The outdoor condenser is used for functioning as a water-cooled condenser, so that compared with the prior art, one heat exchange process is reduced, and the heat exchange efficiency is improved;
(2) The structure is simpler, the weight is lighter, and the requirement of the weight of a vehicle (particularly an air travel vehicle) is met.
(3) The structure is compact, each part can be integrated in a narrow space, hot air is blown out from the feet through the air duct, cold air is blown out from the head, dehumidification and heating can be realized, the function is complete, and the comfort is better;
(4) The cooling/heating of the passenger cabin and the cooling/heating of the battery can be realized at the same time, and the comfort of the passenger cabin and the safety of the power battery are ensured.
Drawings
FIG. 1 shows a schematic diagram of a compact thermal management system for a vehicle in accordance with an embodiment of the present invention.
FIG. 2 is a schematic diagram of a compact thermal management system for a vehicle according to an embodiment of the present invention.
Description of element reference numerals
1-a condenser; 2-an evaporator; 3-a refrigeration expansion valve; 4-an outdoor fan; 5-compressor;
6-a first air cooling port; 61-a second air cooling port;
7-a first warm air port; 71-a second warm air inlet;
8-an indoor fan; 9-a water chiller; 10-a cold water machine expansion valve; 11-a power cell; 12-an electric heating device; 13-a water pump;
14-a battery water inlet; 15-a battery water outlet;
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1-2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Referring to fig. 1-2, the present invention provides a compact thermal management system for a vehicle, comprising a refrigerant circuit and a coolant circuit; the refrigerant circuit comprises a passenger cabin circuit and a battery circuit, and the passenger cabin circuit comprises a condenser 1 and an evaporator 2; the evaporator 2 is connected with a cold air duct for introducing cold air after heat exchange of the evaporator 2 into the passenger cabin; the condenser 1 is connected with a warm air duct for introducing warm air after heat exchange of the condenser 1 into the passenger cabin.
Preferably, the passenger cabin circuit further comprises a compressor 5 and a refrigeration expansion valve 3, the compressor 5, the condenser 1, the refrigeration expansion valve 3 and the evaporator 2 each comprising a first port and a second port; the first port of the compressor 5 is communicated with the second port of the condenser 1, the first port of the condenser 1 is communicated with the second port of the refrigeration expansion valve 3, the first port of the refrigeration expansion valve 3 is communicated with the second port of the evaporator 2, and the first port of the evaporator 2 is communicated with the second port of the compressor 5.
Specifically, the refrigerant circulates in the passenger cabin loop, when the refrigerant passes through the compressor 5, the refrigerant is compressed into high-temperature high-pressure gas, the high-temperature high-pressure gas is condensed and released by the condenser 1 to become liquid, when the liquid refrigerant passes through the refrigeration expansion valve 3, the liquid refrigerant becomes low-temperature low-pressure wet vapor due to pressure reduction, and when the low-temperature low-pressure wet vapor passes through the evaporator 2, the low-temperature low-pressure wet vapor exchanges heat with the passenger cabin, absorbs heat and gasifies further, and the heat of the passenger cabin is taken away, so that the refrigerating effect is achieved.
Preferably, the coolant loop comprises a chiller 9, a battery heat exchanger, a water pump 13 and an electrical heating device (WPTC) 12; the water chiller 9, the battery heat exchanger, the electric heating device 12 and the water pump 13 all comprise a first port and a second port; wherein, the first port of the water chiller 9 is communicated with the second port of the electric heating device 12, the first port of the electric heating device 12 is communicated with the second port of the water pump 13, the first port of the water pump 13 is communicated with the second port of the battery heat exchanger, and the first port of the battery heat exchanger is communicated with the second port of the water chiller 9. In the embodiment of the invention, the electric heating device adopts an electric heating plate, and in other embodiments, the electric heating device can be freely selected according to the power.
Further, the first port of the water chiller 9 is the battery water inlet 14 in fig. 2, and the second port of the water chiller 9 is the battery water outlet 15 in fig. 2.
Further, the chiller 9 is configured to cool a cooling liquid, and the cooling liquid flows through the chiller 9 (chiller) to exchange heat with the chiller 9 and then to lower the temperature; the electric heating device 12 is used for heating the cooling liquid, and the cooling liquid flows through the electric heating device 12 and is subjected to heat exchange with the electric heating device 12 to rise in temperature; the water pump 13 provides power for the circulation of the cooling liquid;
further, the cooling liquid loop also comprises a power battery 11, and a battery heat exchanger is used for exchanging heat with the power battery 11;
further, the working environment of the power battery 11 has a certain temperature requirement, and the working efficiency of the power battery 11 is reduced due to the fact that the temperature is too high or too low; when the power battery 11 needs to be cooled, the electric heating device 12 is turned off, the water chiller 9 is turned on, and the low-temperature condensed water cools the power battery 11 through the battery heat exchanger; when the power battery 11 needs to be heated, the water chiller 9 is turned off, the electric heating device 12 is turned on, and the high-temperature condensed water heats the power battery 11 through the battery heat exchanger;
preferably, the battery loop comprises a compressor 5, a condenser 1, a chiller expansion valve 10 and a chiller 9; the water chiller 9 further comprises a third port and a fourth port, and the water chiller expansion valve 10 comprises a first port and a second port; in the battery circuit, a first port of the compressor 5 is communicated with a second port of the condenser 1, a first port of the condenser 1 is communicated with a second port of the chiller expansion valve 10, a first port of the chiller expansion valve 10 is communicated with a fourth port of the chiller 9, and a third port of the chiller 9 is communicated with a second port of the compressor 5.
Further, the battery loop is used for providing the refrigerant in a low-temperature state for the water chiller 9; specifically, the refrigerant flowing out of the condenser 1 flows through the cold water machine expansion valve 10 to become a low-temperature low-pressure refrigerant, and the low-temperature low-pressure refrigerant exchanges heat with condensed water in the cold water machine 9 to take away heat in the condensed water, so that the condensed water maintains a low-temperature state.
Further, when the power battery 11 needs to be cooled, the water chiller 9 and the expansion valve 10 of the water chiller are required to be opened simultaneously, so that the low-temperature low-pressure refrigerant is led into the water chiller 9 through the expansion valve.
Preferably, the cold air duct further comprises a first cold air port 6 and a second cold air port 61, wherein the first cold air port 6 is communicated with the passenger cabin, and the second cold air port 61 is communicated with the outside.
Preferably, the compact thermal management system for a vehicle further comprises a cool air switch for switching the cool air outlet passage.
Preferably, the warm air duct further includes a first warm air port 7 and a second warm air port 71, the first warm air port 7 being in communication with the passenger compartment, the second warm air port 71 being in communication with the outside.
Preferably, the compact thermal management system for a vehicle further comprises a warm air switch for switching a warm air outlet passage.
Preferably, the compact thermal management system for a vehicle further comprises an indoor fan 8, the indoor fan 8 being connected to the right end of the evaporator 2. Is used for supplying air into the cold air duct.
Preferably, the compact thermal management system for a vehicle further comprises an outdoor fan 4, the outdoor fan 4 being connected to the right end of the condenser 1. Is used for supplying air into the warm air duct.
The thermal management system for a compact vehicle of the present invention comprises a plurality of operating states:
(1) When the passenger cabin has a heating requirement, cold air generated after heat exchange with the evaporator 2 can be guided into the second cold air port 61 through the cold air switch, and the cold air is discharged to the outside; the hot air generated after heat exchange with the condenser 1 is guided into the first warm air port 7 through the warm air switch, and the warm air enters the passenger cabin.
(2) When the passenger cabin has a refrigerating requirement, cold air generated after heat exchange with the evaporator 2 can be guided into the first cold air port 6 through the cold air switch, and enters the passenger cabin; the hot air generated after heat exchange with the condenser 1 is introduced into the second warm air inlet 71 through the warm air switch.
(3) At the same time, when cool air passing through the evaporator 2 and hot air passing through the condenser 1 are blown toward the passenger compartment, dehumidification heating can be achieved.
(4) When the battery has a cooling requirement, the expansion valve 10 of the water chiller is opened to a certain value, part of refrigerant enters the water chiller 9 after being throttled and cooled by the expansion valve 10 of the water chiller, the water pump 13 in the cooling liquid loop is opened, the electric heating device 12 does not work, the refrigerant and the cooling liquid realize heat exchange in the water chiller 9, the temperature of the cooling liquid coming out of the water chiller 9 is reduced, and the cooling liquid flows through the power battery 11 and exchanges heat with the heat exchanger of the battery, so that the power battery 11 is cooled.
(5) When the battery has a heating requirement, the expansion valve 10 of the water chiller is closed, the water pump 13 in the cooling liquid loop is opened, the electric heating device 12 works to raise the temperature of the cooling liquid flowing through the electric heating device 12, and when the high-temperature cooling liquid flows through the heat exchanger of the battery, the temperature of the power battery 11 is raised.
In summary, according to the compact thermal management system for the vehicle, the outdoor condenser is used for functioning as the water-cooled condenser, so that compared with the prior art, one heat exchange process is reduced, and the heat exchange efficiency is improved; the structure is simpler, the weight is lighter, and the requirement of the weight of a vehicle (particularly an air travel vehicle) is met. The structure is compact, each part can be integrated in a narrow space, hot air is blown out from the feet through the air duct, cold air is blown out from the head, dehumidification and heating can be realized, the function is complete, and the comfort is better; the cooling/heating of the passenger cabin and the cooling/heating of the battery can be realized at the same time, and the comfort of the passenger cabin and the safety of the power battery are ensured. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A thermal management system for a compact vehicle includes a refrigerant circuit and a coolant circuit; the refrigerant circuit comprises a passenger cabin circuit and a battery circuit, wherein the passenger cabin circuit comprises a condenser and an evaporator;
the device is characterized in that the evaporator is connected with a cold air duct for introducing cold air after heat exchange of the evaporator into the passenger cabin; the condenser is connected with a warm air duct for introducing warm air after heat exchange of the condenser into the passenger cabin.
2. A compact vehicle thermal management system according to claim 1, wherein: the passenger cabin loop further comprises a compressor and a refrigeration expansion valve, wherein the compressor, the condenser, the refrigeration expansion valve and the evaporator all comprise a first port and a second port; the first port of the compressor is communicated with the second port of the condenser, the first port of the condenser is communicated with the second port of the refrigeration expansion valve, the first port of the refrigeration expansion valve is communicated with the second port of the evaporator, and the first port of the evaporator is communicated with the second port of the compressor.
3. The compact vehicle thermal management system of claim 2, wherein: the cooling liquid loop comprises a water chiller, a battery heat exchanger, a water pump and an electric heating device; the water chiller, the battery heat exchanger, the electric heating device and the water pump all comprise a first port and a second port; the first port of the water cooler is communicated with the second port of the electric heating device, the first port of the electric heating device is communicated with the second port of the water pump, the first port of the water pump is communicated with the second port of the battery heat exchanger, and the first port of the battery heat exchanger is communicated with the second port of the water cooler.
4. A compact thermal vehicle management system according to claim 3, wherein: the battery loop comprises the compressor, the condenser, the expansion valve of the water chiller and the water chiller; the water chiller further comprises a third port and a fourth port, and the water chiller expansion valve comprises a first port and a second port; in the battery loop, a first port of the compressor is communicated with a second port of the condenser, the first port of the condenser is communicated with a second port of the expansion valve of the water chiller, the first port of the expansion valve of the water chiller is communicated with a fourth port of the water chiller, and a third port of the water chiller is communicated with a second port of the compressor.
5. The compact vehicle thermal management system of claim 1, wherein: the cold air duct further comprises a first cold air port and a second cold air port, wherein the first cold air port is communicated with the passenger cabin, and the second cold air port is communicated with the outside.
6. The compact vehicle thermal management system of claim 5, wherein: the compact thermal management system for a vehicle further includes a cool air switch for switching a cool air outlet passage.
7. The compact vehicle thermal management system of claim 1, wherein: the warm air duct further comprises a first warm air port and a second warm air port, the first warm air port is communicated with the passenger cabin, and the second warm air port is communicated with the outside.
8. The compact vehicle thermal management system of claim 7, wherein: the compact thermal management system for a vehicle further includes a warm air switch for switching a warm air outlet passage.
9. The compact vehicle thermal management system of claim 7, wherein: the compact thermal management system for a vehicle further includes an indoor fan connected with the right end of the evaporator.
10. The compact vehicle thermal management system of claim 7, wherein: the compact thermal management system for a vehicle further includes an outdoor fan connected to the right end of the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250721.4A CN116021945A (en) | 2021-10-26 | 2021-10-26 | Compact thermal management system for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250721.4A CN116021945A (en) | 2021-10-26 | 2021-10-26 | Compact thermal management system for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116021945A true CN116021945A (en) | 2023-04-28 |
Family
ID=86069279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111250721.4A Pending CN116021945A (en) | 2021-10-26 | 2021-10-26 | Compact thermal management system for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116021945A (en) |
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2021
- 2021-10-26 CN CN202111250721.4A patent/CN116021945A/en active Pending
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