CN115723510A - Air conditioning system for vehicle, method for adjusting temperature in vehicle and vehicle - Google Patents
Air conditioning system for vehicle, method for adjusting temperature in vehicle and vehicle Download PDFInfo
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- CN115723510A CN115723510A CN202111012560.5A CN202111012560A CN115723510A CN 115723510 A CN115723510 A CN 115723510A CN 202111012560 A CN202111012560 A CN 202111012560A CN 115723510 A CN115723510 A CN 115723510A
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Abstract
The invention provides an air conditioning system for a vehicle, a temperature adjusting method in the vehicle and the vehicle, wherein the air conditioning system for the vehicle comprises an air conditioning compressor, an indoor condenser, an outdoor condenser, an evaporator, a liquid storage tank, a stepless flow control three-way valve, a one-way stop valve and a connecting pipeline for guiding a refrigerant, the output end of the air conditioning compressor is connected to the input end of the stepless flow control three-way valve through the connecting pipeline, the first output end and the second output end of the stepless flow control three-way valve are respectively connected to the input ends of the indoor condenser and the outdoor condenser, the output ends of the indoor condenser and the outdoor condenser are respectively connected to the input end of the liquid storage tank through the one-way stop valve, the output end of the liquid storage tank is connected to the input end of the evaporator, the output end of the evaporator is connected to the input end of the air conditioning compressor, and the stepless flow control three-way valve can steplessly adjust the flow of the refrigerant flowing into the indoor condenser and the outdoor condenser from the air conditioning compressor.
Description
Technical Field
The invention relates to an air conditioning system for a vehicle, a method for adjusting temperature in the vehicle and the vehicle, in particular to an air conditioning system for the vehicle, which comprises a stepless flow control three-way valve.
Background
In a pure electric vehicle, an air conditioner and a battery system are much more complex than those in a traditional vehicle, and in order to enable the electric vehicle to have a good driving range when the air conditioner is used, simplify the structure of the air conditioner system, reduce the weight, and simultaneously consider the cooling of a power battery of the vehicle, it is necessary to improve the existing vehicle air conditioner system.
In conventional vehicle air conditioning systems, a simple reversing three-way valve is typically used to switch the refrigerant circuits of the indoor condenser, the outdoor condenser, and the battery cooling system.
Disclosure of Invention
The technical problem to be solved by one aspect of the present invention is how to more accurately control the refrigerant flows into different circuits in a vehicle air conditioning system.
In addition, other aspects of the present invention are directed to solving or alleviating other technical problems in the prior art.
The invention provides an air conditioning system for a vehicle, a temperature adjusting method in the vehicle and the vehicle, in particular, according to one aspect of the invention, the invention provides:
the utility model provides an air conditioning system for vehicle, wherein, it includes air condition compressor, indoor condenser, outdoor condenser, evaporimeter, liquid storage pot, stepless flow control three-way valve, one-way stop valve and is used for guiding the connecting line of refrigerant, through connecting line, air condition compressor's output is connected to stepless flow control three-way valve's input, and stepless flow control three-way valve's first output and second output are connected to indoor condenser and outdoor condenser's input respectively, and the output of indoor condenser and outdoor condenser is connected to the input of liquid storage pot through one-way stop valve respectively, and the output of liquid storage pot is connected to the input of evaporimeter, and the output of evaporimeter is connected to air condition compressor's input, stepless flow control three-way valve can steplessly adjust the size of the flow of the refrigerant that flows into indoor condenser and outdoor condenser from air condition compressor.
Optionally, according to an embodiment of the present invention, the vehicle air conditioning system further includes a battery cooling system, the battery cooling system includes an electric water pump, a cooler and a power battery which are connected to form a loop through a cooling pipeline, the output end of the liquid storage tank is further connected to the input end of the cooler through a connecting pipeline, and the output end of the cooler is connected to the input end of the air conditioning compressor.
Optionally, in accordance with an embodiment of the present invention, an output of the liquid storage tank is connected to an input of the evaporator via a first electronic expansion valve.
Optionally, in accordance with an embodiment of the present invention, an output of the liquid reservoir is connected to an input of the chiller via a second electronic expansion valve.
Alternatively, according to an embodiment of the present invention, the evaporator and the indoor condenser are disposed in the same air-conditioning case, and a blower is installed beside the air-conditioning case for blowing cool air generated by the evaporator or hot air generated by the indoor condenser into a passenger compartment of the automobile.
According to another aspect of the present invention, there is provided an in-vehicle temperature adjusting method for performing with the above-described vehicle air conditioning system, wherein when heating of the passenger compartment is required, the first output of the stepless flow control three-way valve is turned on, the second output is turned off, the first electronic expansion valve is turned off, the second electronic expansion valve is turned on, and when cooling of the passenger compartment is required, the first output of the stepless flow control three-way valve is turned off, the second output is turned on, the first electronic expansion valve is turned on, and the second electronic expansion valve is turned off.
Alternatively, according to an embodiment of another aspect of the present invention, when heating and dehumidifying of the passenger compartment are simultaneously required, the first output of the stepless flow control three-way valve is turned on, the second output is turned off, the first electronic expansion valve is opened, and the second electronic expansion valve is closed.
Alternatively, according to an embodiment of another aspect of the present invention, when both cooling of the passenger compartment and cooling of the power battery are required, the first output of the stepless flow control three-way valve is closed, the second output is open, and both the first electronic expansion valve and the second electronic expansion valve are opened.
Alternatively, according to an embodiment of another aspect of the present invention, when heating and dehumidifying the passenger compartment and cooling the power battery are simultaneously required, the first output and the second output of the stepless flow control three-way valve are both turned on, the first electronic expansion valve and the second electronic expansion valve are both opened, and the stepless flow control three-way valve reduces the flow rate of the refrigerant at the second output and simultaneously increases the flow rate of the refrigerant at the first output as the power battery cools.
According to still another aspect of the present invention, there is provided an automobile having the above-described air conditioning system for an automobile.
The beneficial effects of the invention include: the vehicle air-conditioning system can cool the battery while heating, refrigerating or dehumidifying the passenger compartment, can effectively utilize the waste heat of the battery, extends the low-temperature heating temperature range of the passenger compartment, promotes the energy conservation of the electric vehicle, improves the driving mileage of the vehicle in winter, and can greatly simplify the structure of the air-conditioning system, save the cost and reduce the weight.
Drawings
The above and other features of the present invention will become apparent with reference to the accompanying drawings, in which,
fig. 1 shows a schematic configuration diagram of an air conditioning system for a vehicle according to an embodiment of the present invention.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like are used for descriptive and descriptive purposes only and not for purposes of indication or implication as to the relative importance of the respective components.
Referring to fig. 1, a schematic structural view of an air conditioning system for a vehicle according to an embodiment of the present invention is shown. The vehicle air conditioning system comprises an air conditioning compressor 1, a stepless flow control three-way valve 2, an indoor condenser 3, an outdoor condenser 4, an evaporator 5, a liquid storage tank 6, a first one-way stop valve 7, a second one-way stop valve 8, a battery cooling system 9 and a connecting pipeline for guiding a refrigerant. When the refrigerant flows through the evaporator 5, the refrigerant absorbs heat and evaporates, so that moisture in the air is condensed into liquid water and is discharged out of the vehicle, and the purposes of refrigeration and dehumidification are achieved; when the refrigerant flows through the indoor condenser 3, heat is released to enter the passenger compartment, so that the passenger compartment is heated, and meanwhile, the refrigerant is cooled; as the refrigerant passes through the outdoor condenser 4, heat is released to the outside of the room, and the refrigerant is cooled. The stepless flow control three-way valve 2 has an input 201, a first output 202 and a second output 203, and unlike a conventional reversing three-way valve, the stepless flow control three-way valve 2 can control not only the opening and closing of the two outputs 202 and 203 thereof, but also the magnitude of the refrigerant flow flowing out of the two outputs 202 and 203 thereof steplessly. Therefore, the stepless flow control three-way valve 2 can be controlled by the automobile electronic control unit according to different vehicle running conditions and user use setting conditions, so that the proportion of the air-conditioning refrigerant passing through the indoor condenser 3 and the outdoor condenser 4 is reasonably distributed, the requirement on the comfort degree of a passenger compartment is met, and the thermal management of the power battery is also taken into consideration.
The battery cooling system 9 includes an electric water pump 901, a cooler 902, and a power battery 903, which are connected in a loop by a cooling line. The refrigerant in the vehicle air conditioning system can flow through the cooler 902 and cause heat exchange at the cooler 902 to lower the temperature of the coolant in the battery cooling system 9, and then cool the power battery 903 through the cooling loop of the battery cooling system 9.
In the vehicle air conditioning system of fig. 1, the output end of the air conditioning compressor 1 is connected to the input end 201 of the stepless flow control three-way valve 2 through a connecting pipeline, the first output end 202 and the second output end 203 of the stepless flow control three-way valve 2 are respectively connected to the input ends of the indoor condenser 3 and the outdoor condenser 4, the output ends of the indoor condenser 3 and the outdoor condenser 4 are respectively connected to the input end of the liquid storage tank 6 through the first one-way stop valve 7 and the second one-way stop valve 8, the one-way stop valves 7 and 8 enable the refrigerant to flow to the input end of the liquid storage tank 6 only from the output ends of the indoor condenser 3 and the outdoor condenser 4, but not to flow reversely. The output of the liquid reservoir 6 is connected to the input of the evaporator 5 via a first electronic expansion valve 10 and to the input of the cooler 902 via a second electronic expansion valve 11, the first electronic expansion valve 10 and the second electronic expansion valve 11 being capable of controlling the make-and-break of the connecting lines to switch the refrigerant to the evaporator 5 or the cooler 902. The output of the evaporator 5 is connected to the input of the air-conditioning compressor 1, and the output of the cooler 902 is connected to the input of the air-conditioning compressor 1. The evaporator 5 and the indoor condenser 3 are disposed in the same air-conditioning case, and a blower 12 for blowing cold air generated by the evaporator 5 or hot air generated by the indoor condenser 3 into the passenger compartment is installed beside the air-conditioning case.
Thus, four refrigerant circuits can be obtained in the vehicle air conditioning system, the first and second circuits being the refrigerant circuits when the first electronic expansion valve 10 is open and the second electronic expansion valve 11 is closed. The first loop is that the refrigerant is output from the air conditioner compressor 1, passes through the stepless flow control three-way valve 2, the indoor condenser 3, the first one-way stop valve 7, the liquid storage tank 6, the first electronic expansion valve 10 and the evaporator 5, and finally returns to the air conditioner compressor 1. The second loop is that the refrigerant is output from the air conditioner compressor 1, passes through the stepless flow control three-way valve 2, the outdoor condenser 4, the second one-way stop valve 8, the liquid storage tank 6, the first electronic expansion valve 10 and the evaporator 5, and finally returns to the air conditioner compressor 1. The third and fourth circuits are circuits relating to the battery cooling system 9, i.e. when the first electronic expansion valve 10 is closed and the second electronic expansion valve 11 is open. The third loop is that the refrigerant is output from the air conditioner compressor 1, passes through the stepless flow control three-way valve 2, the indoor condenser 3, the first one-way stop valve 7, the liquid storage tank 6, the second electronic expansion valve 11 and the cooler 902, and finally returns to the air conditioner compressor 1. The fourth loop is that the refrigerant is output from the air conditioner compressor 1, passes through the stepless flow control three-way valve 2, the outdoor condenser 4, the second one-way stop valve 8, the liquid storage tank 6, the second electronic expansion valve 11 and the cooler 902, and finally returns to the air conditioner compressor 1.
An in-vehicle temperature regulation method can be implemented by the vehicle air conditioning system to regulate the temperature in the passenger compartment of the vehicle. When it is desired to heat the passenger compartment, the first output 202 of the stepless flow three-way valve 2 is turned on, the second output 203 is turned off, and the first electronic expansion valve 10 is turned off, and the second electronic expansion valve 11 is opened, whereby the refrigerant goes through the third circuit, passes through the indoor condenser 3, the first one-way shutoff valve 7, the reservoir 6, the second electronic expansion valve 11, and the cooler 902, and finally returns to the air-conditioning compressor 1. During this time, the residual heat drawn into the power battery by the cooler 902 and the heat in the circuit heats the refrigerant, which helps to improve the thermal efficiency and increase the endurance of the vehicle. The refrigerant flows into the air-conditioning compressor 1 after being heated by the cooler, completing the heating process of the passenger compartment. In this process, the indoor condenser 3 emits heat, and is blown into the passenger compartment by the blower 12, whereby the passenger compartment is heated.
When the passenger compartment needs to be cooled, the first output 202 of the stepless flow three-way valve 2 is closed, the second output 203 is conducted, the first electronic expansion valve 10 is opened, and the second electronic expansion valve 11 is disconnected, so that the refrigerant flows through the second loop, i.e., the outdoor condenser 4, the second one-way stop valve 8, the liquid storage tank 6, the first electronic expansion valve 10 and the evaporator 5, and finally returns to the air-conditioning compressor 1. During this time, the evaporator 5 absorbs heat, lowers the air temperature and the generated cold air is blown into the passenger compartment by the blower 12 to perform a cooling function.
When the passenger compartment needs to be heated and dehumidified simultaneously, the first output 202 of the stepless flow three-way valve 2 is conducted, the second output 203 is closed, the first electronic expansion valve 10 is opened, and the second electronic expansion valve 11 is disconnected, so that the refrigerant flows through the first loop, passes through the indoor condenser 3, the first one-way stop valve 7, the liquid storage tank 6, the first electronic expansion valve 10 and the evaporator 5, and finally returns to the air-conditioning compressor 1. At this time, heat is radiated by the refrigerant in the indoor condenser 3, and hot gas is blown into the passenger compartment by the blower 12 to achieve heating. And the refrigerant is then evaporated in the evaporator 5 to absorb heat, thereby achieving the effect of dehumidification.
In both cases where the passenger compartment needs to be cooled and the passenger compartment needs to be heated and dehumidified, the second electronic expansion valve 11 may be opened to allow a portion of the refrigerant to flow through the cooler 902, and absorb heat from the coolant in the cooler 902 to cool the power battery 903, thereby improving thermal efficiency and increasing the range of the vehicle.
When strong cooling of the power battery 903 is required (i.e., when the temperature of the power battery 903 is increased too fast to be rapidly cooled when the power battery 903 is charged quickly) and heating and dehumidification of the passenger compartment are simultaneously required, the first output 202 and the second output 203 of the stepless flow three-way valve 2 are both conducted, and the first electronic expansion valve 10 and the second electronic expansion valve 11 are both opened, and at this time, the refrigerant can flow along the four circuits. The refrigerant radiates heat in the indoor condenser 3 in a circuit passing through the indoor condenser 3, and the heating of the passenger compartment is achieved by blowing hot gas into the passenger compartment by the blower 12. The refrigerant absorbs heat in the evaporator 5 in a circuit passing through the first electronic expansion valve 10, thereby achieving dehumidification of the passenger compartment. The refrigerant discharges heat to the outside at the outdoor condenser 4 in a circuit passing through the outdoor condenser 4, and absorbs heat at the cooler 902 in a circuit passing through the second electronic expansion valve 11, thereby achieving strong cooling of the power battery 903. With the power battery being cooled, the flow rate of the refrigerant at the second output end 203 of the stepless flow three-way valve 2 is gradually reduced, and the flow rate of the refrigerant at the first output end 202 of the stepless flow three-way valve is increased, that is, the cooling of the power battery 903 is continuously reduced, and the heating of the passenger compartment is continuously increased, so that the redundant heat of the power battery 903 can be fully utilized to heat, the heat efficiency is improved, and the cruising range of the vehicle is increased.
It should be understood that the vehicular air conditioning system of the present invention can be mounted on various vehicles including passenger cars, trucks, passenger cars, hybrid cars, electric vehicles, and the like. Therefore, the subject matter of the present invention is also intended to protect various vehicles equipped with the vehicular air conditioning system of the present invention.
It should be understood that all of the above preferred embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which would occur to persons skilled in the art upon consideration of the above teachings, are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides an air conditioning system for vehicle, its characterized in that, includes air condition compressor, indoor condenser, outdoor condenser, evaporimeter, liquid storage pot, stepless flow control three-way valve, one-way stop valve and is used for guiding the connecting line of refrigerant, through connecting line, air condition compressor's output is connected to stepless flow control three-way valve's input, and stepless flow control three-way valve's first output and second output are connected to indoor condenser and outdoor condenser's input respectively, and the output of indoor condenser and outdoor condenser is connected to the input of liquid storage pot through one-way stop valve respectively, and the output of liquid storage pot is connected to the input of evaporimeter, and the output of evaporimeter is connected to air condition compressor's input, stepless flow control three-way valve can infinitely adjust the size of the flow of the refrigerant that flows into indoor condenser and outdoor condenser from air condition compressor.
2. The vehicle air conditioning system of claim 1, further comprising a battery cooling system, wherein the battery cooling system comprises an electric water pump, a cooler, and a power battery connected in a loop by a cooling line, wherein the output of the liquid storage tank is further connected to the input of the cooler by a connecting line, and wherein the output of the cooler is connected to the input of the air conditioning compressor.
3. The vehicle air conditioning system of claim 2, wherein an output of the liquid storage tank is connected to an input of the evaporator via a first electronic expansion valve.
4. A vehicular air-conditioning system according to claim 3, characterized in that the output of the liquid reservoir is connected to the input of the cooler via a second electronic expansion valve.
5. The vehicle air conditioning system according to claim 4, wherein the evaporator and the indoor condenser are disposed in the same air conditioning case, and a blower is installed beside the air conditioning case for blowing cool air generated from the evaporator or hot air generated from the indoor condenser into a passenger compartment of the vehicle.
6. An in-vehicle temperature adjusting method for being performed by the air conditioning system for vehicles according to claim 5, wherein when heating of the passenger compartment is required, the first output of the stepless flow control three-way valve is turned on, the second output is turned off, the first electronic expansion valve is turned off, the second electronic expansion valve is turned on, and when cooling of the passenger compartment is required, the first output of the stepless flow control three-way valve is turned off, the second output is turned on, the first electronic expansion valve is turned on, and the second electronic expansion valve is turned off.
7. The in-vehicle temperature adjusting method according to claim 6, wherein when heating and dehumidification of the passenger compartment are simultaneously required, the first output of the stepless flow control three-way valve is turned on, the second output is turned off, the first electronic expansion valve is opened, and the second electronic expansion valve is closed.
8. The in-vehicle temperature adjusting method according to claim 6, wherein when cooling of the passenger compartment and cooling of the power battery are simultaneously required, the first output of the stepless flow control three-way valve is closed, the second output is conducted, and both the first electronic expansion valve and the second electronic expansion valve are opened.
9. The in-vehicle temperature adjusting method according to claim 7, wherein when heating and dehumidifying of the passenger compartment and cooling of the power battery are simultaneously required, both the first output and the second output of the stepless flow control three-way valve are conducted, both the first electronic expansion valve and the second electronic expansion valve are opened, and the stepless flow control three-way valve reduces the flow rate of the refrigerant at the second output and simultaneously increases the flow rate of the refrigerant at the first output as the power battery is cooled.
10. An automobile characterized in that the automobile has the vehicular air conditioning system according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012560.5A CN115723510A (en) | 2021-08-31 | 2021-08-31 | Air conditioning system for vehicle, method for adjusting temperature in vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012560.5A CN115723510A (en) | 2021-08-31 | 2021-08-31 | Air conditioning system for vehicle, method for adjusting temperature in vehicle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115723510A true CN115723510A (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111012560.5A Pending CN115723510A (en) | 2021-08-31 | 2021-08-31 | Air conditioning system for vehicle, method for adjusting temperature in vehicle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115723510A (en) |
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2021
- 2021-08-31 CN CN202111012560.5A patent/CN115723510A/en active Pending
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