CN214324840U - Low-temperature heat pump air conditioner device of new energy automobile - Google Patents
Low-temperature heat pump air conditioner device of new energy automobile Download PDFInfo
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- CN214324840U CN214324840U CN202120121100.5U CN202120121100U CN214324840U CN 214324840 U CN214324840 U CN 214324840U CN 202120121100 U CN202120121100 U CN 202120121100U CN 214324840 U CN214324840 U CN 214324840U
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Abstract
The utility model belongs to the technical field of vehicle air conditioner, a new energy automobile low-temperature heat pump air conditioning device is disclosed, the right end of a plate heat exchanger is sequentially connected with an electronic water pump and a three-way solenoid valve, the other two ends of the three-way solenoid valve are respectively connected with a motor radiator and a battery pack, and the other ends of the motor radiator and the battery pack are respectively connected with the left end of the plate heat exchanger; the left end of the plate type heat exchanger uses an electronic expansion valve, the air-supplying enthalpy-increasing compressor is connected with an indoor condenser and an indoor evaporator of the HAVC assembly through an electromagnetic valve, an outdoor heat exchanger and a connecting pipeline respectively, and a gas-liquid separator is arranged between the air-supplying enthalpy-increasing compressor and the indoor evaporator. The utility model discloses an adopt plate heat exchanger to replace the economizer, can satisfy vehicle air conditioner's normal function, also can realize cooling motor and battery package through plate heat exchanger, can change according to battery package surface temperature simultaneously, confirm whether need carry out the auxiliary heating for the battery package through the water circuit that motor radiator and electronic water pump constitute.
Description
Technical Field
The utility model belongs to the technical field of vehicle air conditioner, especially, relate to a new energy automobile low temperature heat pump air conditioning equipment.
Background
At present: with the rapid development of the automobile industry and the continuous improvement of living conditions of people, automobiles become one of indispensable transportation tools for people to go out. The heating of new energy automobile generally adopts PTC (Positive Temperature Coefficient) electric heater, but PTC heating efficiency is low, increases power battery's power consumption, and the battery discharge capacity drops under the low Temperature condition, and these factors seriously reduce winter continuation of the journey mileage. The heat pump air conditioning system of the existing new energy automobile needs to intermittently defrost an evaporator when the external temperature is low, can not continuously heat, influences the comfort of a passenger compartment, and can not simultaneously meet the requirements of heating the passenger compartment and cooling a battery.
The existing heat pump air-conditioning system of the new energy automobile mainly comprises an air-supply enthalpy-increasing compressor, an HAVC assembly, an outdoor heat exchanger, electromagnetic valves, a P-T sensor, a flash evaporator (economizer), an electronic water pump, an electronic expansion valve, a one-way valve, an electromagnetic electronic expansion valve and a gas-liquid separator. However, the air conditioning system only can meet the requirements of air supplement for the compressor and gas-liquid separation for the refrigerant by using the economizer; the battery pack and the motor cannot be cooled by adopting an economizer; when the temperature of the battery pack is too low, the battery pack cannot be heated in an auxiliary manner through the water pump and the motor radiator.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) when the external temperature is low, the existing heat pump air conditioning system of the new energy automobile needs to defrost an evaporator intermittently, can not continuously heat, influences the comfort of a passenger cabin, and can not simultaneously meet the requirements of heating the passenger cabin and cooling a battery.
(2) The existing heat pump air-conditioning system of the new energy automobile only can supplement air to a compressor and separate gas and liquid of a refrigerant by using an economizer; the battery pack and the motor cannot be cooled by adopting an economizer; when the temperature of the battery pack is too low, the battery pack cannot be heated in an auxiliary manner through the water pump and the motor radiator.
The difficulty in solving the above problems and defects is: the economizer behaves as a compact heat exchanger that absorbs heat by throttling evaporation of the refrigerant itself, thereby subcooling another portion of the refrigerant. The plate heat exchanger consists of two cooling liquid inlet and outlet pipes, two refrigerant inlet and outlet pipes, a heat exchanger main body and an external evaporator, and the heat exchange function is realized by exchanging the refrigerant and the cooling liquid in the heat exchanger main body in a convection mode. The limitation of the structure and the function of the economizer causes that the economizer only has partial functions of the plate heat exchanger and cannot be replaced by the plate heat exchanger.
The significance of solving the problems and the defects is as follows: when the automobile does not use the air conditioning system, the automobile is only used as a battery heat management system, and the battery pack and the motor are cooled by performing heat interconversion on the refrigerant and the cooling liquid in the heat exchanger main body in a convection mode.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a new energy automobile low temperature heat pump air conditioning equipment.
The utility model discloses a realize like this, a new energy automobile low temperature heat pump air conditioning equipment is provided with:
a plate heat exchanger;
the right end of the plate heat exchanger is sequentially connected with an electronic water pump and a three-way electromagnetic valve, the other two ends of the three-way electromagnetic valve are respectively connected with a motor radiator and a battery pack, and the other ends of the motor radiator and the battery pack are respectively connected with the left end of the plate heat exchanger;
the left end of the plate heat exchanger is connected with an air-supplying enthalpy-increasing compressor through a connecting pipeline, the air-supplying enthalpy-increasing compressor is respectively connected with an indoor condenser and an indoor evaporator of the HAVC assembly through connecting pipelines, and a gas-liquid separator is arranged between the air-supplying enthalpy-increasing compressor and the indoor evaporator;
the indoor condenser right-hand member is connected with the second check valve through the connecting line, the second check valve other end is connected with electromagnetism electronic expansion valve and fifth solenoid valve through the connecting line respectively, the electromagnetism electronic expansion valve other end is connected with outdoor heat exchanger, the fifth solenoid valve other end is connected with the left end of plate heat exchanger through first electronic expansion valve.
Further, a fourth P-T sensor and a fourth electromagnetic valve are connected between the plate heat exchanger and the air-supplementing enthalpy-increasing compressor, and the plate heat exchanger and the fourth P-T sensor are communicated with a connecting pipeline between the air-supplementing enthalpy-increasing compressor and the gas-liquid separator through a seventh electromagnetic valve.
Furthermore, the right end of the indoor evaporator is connected with a second outdoor heat exchanger through a second electronic expansion valve and a second P-T sensor, a third P-T sensor and a first one-way valve are connected between the gas-liquid separator and the indoor evaporator, and a connecting pipeline between the third P-T sensor and the first one-way valve is communicated with a connecting pipeline between the second electronic expansion valve and the second P-T sensor through a second electromagnetic valve.
Furthermore, a first P-T sensor and a third electromagnetic valve are connected between the air-supplementing enthalpy-increasing compressor and the indoor condenser, and a connecting pipeline between the first P-T sensor and the third electromagnetic valve is communicated with a connecting pipeline between the first electromagnetic valve and a fifth electromagnetic valve as well as a second one-way valve.
Further, the outdoor heat exchanger is communicated with a connecting pipeline between the fifth electromagnetic valve and the first electronic expansion valve through a sixth electromagnetic valve.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are: the utility model discloses a giller (plate heat exchanger) replaces the economic ware, can satisfy the compressor tonifying qi, also can realize cooling down motor and battery package. And determining whether the battery pack needs to be heated in an auxiliary manner through a water loop of the motor radiator according to the surface temperature change of the battery pack.
The utility model discloses a control the opening and closing of a plurality of solenoid valves, realize changing the flow direction of refrigerant in the system, satisfy the system and can become the heat exchanger that the function is different under different modes. The system works in a low-temperature environment, and meanwhile, heat exchange is carried out between the refrigerant and the water medium in the air supplementing loop of the compressor by using a giller (plate heat exchanger), so that the cooling of the motor and the battery is met. The utility model can meet the working temperature range of-10 ℃ to 42 ℃.
The utility model discloses an adopt plate heat exchanger to replace the economizer, satisfy the compressor tonifying qi, also can realize cooling for motor and battery simultaneously. Whether the battery pack needs to be heated by a water loop of the motor radiator can be determined according to the surface temperature change of the battery pack.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a low-temperature heat pump air conditioning device for a new energy automobile provided by an embodiment of the invention.
Fig. 2 is a schematic diagram of a single refrigeration mode according to an embodiment of the present invention.
Fig. 3 is a flowchart of a single cooling mode according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a battery cooling operation mode according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a battery cooling operation mode according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a single heating mode according to an embodiment of the present invention.
Fig. 7 is a flowchart of a single heating mode according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of the operation of the cooling and battery cooling modes provided by the embodiment of the present invention.
Fig. 9 is a flowchart of the operation of the cooling plus battery cooling mode provided by the embodiment of the present invention.
Fig. 10 is a schematic diagram of the operation in the heating + battery cooling mode according to the embodiment of the present invention.
Fig. 11 is a flowchart of the operation of the heating + battery cooling mode provided by the embodiment of the present invention.
In the figure: 1. a vapor-supplementing and enthalpy-increasing compressor; 2. a gas-liquid separator; 3. an HAVC assembly; 4. a first solenoid valve; 5. a second solenoid valve; 6. a third electromagnetic valve; 7. a fourth solenoid valve; 8. a fifth solenoid valve; 9. a sixth electromagnetic valve; 10. a seventh electromagnetic valve; 11. a first P-T sensor; 12. a second P-T sensor; 13. a third P-T sensor; 14. a fourth P-T sensor; 15. a first check valve; 16. a second one-way valve; 17. an indoor condenser; 18. an indoor evaporator; 19. a motor radiator; 20. a battery pack; 21. a plate heat exchanger; 22. a first electronic expansion valve; 23. a second electronic expansion valve; 24. an electromagnetic electronic expansion valve; 25. an outdoor heat exchanger; 26. a three-way electromagnetic valve; 27. an electronic water pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following 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.
Problem to prior art existence, the utility model provides a new energy automobile low temperature heat pump air conditioning equipment, it is right to combine the figure below the utility model discloses do detailed description.
As shown in fig. 1, the right end of the plate heat exchanger 21 in the new energy automobile low-temperature heat pump air-conditioning device provided by the embodiment of the utility model is sequentially connected with an electronic water pump 27 and a three-way electromagnetic valve 26, the other two ends of the three-way electromagnetic valve 26 are respectively connected with a motor radiator 19 and a battery pack 20, and the other ends of the motor radiator 19 and the battery pack 20 are respectively connected with the left end of the plate heat exchanger; the left end of the plate heat exchanger 21 is connected with the air-supplying enthalpy-increasing compressor 1 through a connecting pipeline, the air-supplying enthalpy-increasing compressor 1 is respectively connected with the indoor condenser 17 and the indoor evaporator 18 of the HAVC assembly 3 through connecting pipelines, and a gas-liquid separator 2 is arranged between the air-supplying enthalpy-increasing compressor 1 and the indoor evaporator 18; the right end of the indoor condenser 17 is connected with a second one-way valve 16 through a connecting pipeline, the other end of the second one-way valve 16 is connected with an electromagnetic electronic expansion valve 24 and a fifth electromagnetic valve 8 through connecting pipelines respectively, the other end of the electromagnetic electronic expansion valve 24 is connected with an outdoor heat exchanger 25, and the other end of the fifth electromagnetic valve 8 is connected with the left end of the plate heat exchanger 21 through a first electronic expansion valve 22.
A fourth P-T sensor 14 and a fourth electromagnetic valve 7 are connected between the plate heat exchanger 21 and the air-supplementing enthalpy-increasing compressor 1, and the plate heat exchanger 21 and the fourth P-T sensor 14 are also communicated with a connecting pipeline between the air-supplementing enthalpy-increasing compressor 1 and the gas-liquid separator 2 through a seventh electromagnetic valve 10.
The right end of the indoor evaporator 18 is connected with a second outdoor heat exchanger 25 through a second electronic expansion valve 23 and a second P-T sensor 12, a third P-T sensor 13 and a first one-way valve 15 are connected between the gas-liquid separator 2 and the indoor evaporator 18, and a connecting pipeline between the third P-T sensor 13 and the first one-way valve 15 is communicated with a connecting pipeline between the second electronic expansion valve 23 and the second P-T sensor 12 through a second electromagnetic valve 5.
A first P-T sensor 11 and a third electromagnetic valve 6 are connected between the air-supplementing enthalpy-increasing compressor 1 and the indoor condenser 17, and a connecting pipeline between the first P-T sensor 11 and the third electromagnetic valve 6 is communicated with a connecting pipeline between the first electromagnetic valve 4 and the fifth electromagnetic valve 8 and the second one-way valve 16.
The outdoor heat exchanger 25 communicates with a connection line between the fifth solenoid valve 8 and the first electronic expansion valve 21 through the sixth solenoid valve 9.
The outdoor heat exchanger is an outdoor condenser in a cooling/defrosting mode, and is an outdoor evaporator in a heating mode.
The following is a description of the present invention with reference to five operation modes of the embodiment of the present invention.
1. A single refrigeration mode:
as shown in fig. 2 and 3, when the air conditioner controller is set to the single refrigeration mode, the high-pressure gaseous refrigerant passes through the electromagnetic valve 4 (fully opened), the electromagnetic electronic expansion valve 24 closes the electromagnetic valve 6, the electromagnetic valve 8 and the electromagnetic valve 9, enters the outdoor condenser to release heat and change into high-pressure liquid, the high-pressure liquid refrigerant enters the indoor evaporator through the electronic expansion valve 23 to change into low-pressure liquid, the low-pressure liquid heat absorption phase changes into low-pressure gas, enters the gas-liquid separator 2 through the one-way valve 15 to be separated, and returns to the compressor, so that one working cycle is completed, the next working cycle is performed again after the compressor is compressed, and the cycle is repeated, and the single refrigeration mode of the air conditioner is completed.
2. Battery cooling mode:
as shown in fig. 4 and 5, when the air conditioner controller is set to the battery cooling mode, the solenoid valve 6, the solenoid valve 8, the solenoid valve 5, the solenoid valve 7 and the electronic expansion valve 23 are closed, the high-pressure gaseous refrigerant passes through the solenoid valve 4 (fully open), the electromagnetic electronic expansion valve 24 enters the outdoor condenser to release heat, the phase is changed into a high-pressure liquid state, the liquid refrigerant passes through the solenoid valve 9 (fully open) and the electronic expansion valve 22 (fully open), the phase is changed into a gaseous state through evaporation of a giller, and the gaseous refrigerant directly returns to the compressor through the solenoid valve 10 (fully open). To do this, one cycle is completed and the next cycle is repeated through compressor compression, and the battery cooling mode is completed.
3. Single heating mode:
as shown in fig. 6 and 7, when the air conditioner controller is set to the single heating mode, the electromagnetic valve 4 is closed, the electromagnetic valve 6 is switched on, the electronic expansion valve 23 is fully closed, the high-pressure gaseous refrigerant enters the indoor condenser through the electromagnetic valve 6 to release heat and change into high-pressure liquid, enters the outdoor heat exchanger through the one-way valve 16 and the electromagnetic electronic expansion valve 24 to absorb heat and change into low-pressure gas, the electromagnetic valve 9 is fully closed, the gaseous refrigerant enters the gas-liquid separator through the electromagnetic valve 5 to be separated and then returns to the compressor, so that one working cycle is completed, the next working cycle is performed after the compressor is compressed, and the single heating mode of the air conditioner is completed in cycles.
4. Cooling + battery cooling mode:
as shown in fig. 8 and 9, when the air conditioner controller is adjusted to refrigerate and cool the battery, the solenoid valve 6, the solenoid valve 8 and the solenoid valve 10 are closed, the high-pressure gaseous refrigerant enters the outdoor condenser through the solenoid valve 4 (fully open) and the electromagnetic electronic expansion valve 24 to release heat and change phase into high-pressure liquid, the high-pressure liquid refrigerant enters the plate heat exchanger through the solenoid valve 9 (fully open) and the electronic expansion valve 22 to evaporate and change phase into gaseous state, and the gaseous refrigerant enters the compressor through the solenoid valve 7 (fully open) to supplement air; and closing the electromagnetic valve 5, enabling the high-pressure liquid refrigerant to enter the indoor evaporator through the electronic expansion valve 23 to absorb heat and phase to be changed into a low-pressure gas state, enabling the low-pressure gas state to enter the gas-liquid separator 2 through the one-way valve 15 to be separated, and returning to the compressor, so that one working cycle is completed, the next working cycle is performed again through the compression of the compressor, and the air-conditioning refrigeration and battery cooling modes are completed in a repeated way.
5. Heating + battery cooling mode:
as shown in fig. 10 and 11, when the air conditioner controller is adjusted to the heating + battery cooling mode, the electromagnetic valve 4 and the electromagnetic valve 9 are closed, the high-pressure gaseous refrigerant enters the indoor condenser through the electromagnetic valve 6 (fully open) to release heat and change into high-pressure liquid state, enters the plate heat exchanger through the one-way valve 16, the electromagnetic valve 8 (fully open) and the electronic expansion valve 22 (fully open) to evaporate and change into gaseous state, the electromagnetic valve 10 is closed, and the gaseous refrigerant enters the compressor through the electromagnetic valve 7 (fully open) to supplement air; high-pressure liquid enters the outdoor heat exchanger through the electromagnetic electronic expansion valve 24 to absorb heat and change into low-pressure gas, the electronic expansion valve 23 is closed, the gas refrigerant enters the gas-liquid separator through the electromagnetic valve 5 (fully opened) to be separated and then returns to the compressor, so that one working cycle is completed, the next working cycle is performed again through the compression of the compressor, and the air-conditioning heating and battery cooling modes are completed in a repeated mode.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.
Claims (5)
1. The utility model provides a new energy automobile low temperature heat pump air conditioner device which characterized in that, new energy automobile low temperature heat pump air conditioner device is provided with:
a plate heat exchanger;
the right end of the plate heat exchanger is sequentially connected with an electronic water pump and a three-way electromagnetic valve, the other two ends of the three-way electromagnetic valve are respectively connected with a motor radiator and a battery pack, and the other ends of the motor radiator and the battery pack are respectively connected with the left end of the plate heat exchanger;
the left end of the plate heat exchanger is connected with an air-supplying enthalpy-increasing compressor through a connecting pipeline, the air-supplying enthalpy-increasing compressor is respectively connected with an indoor condenser and an indoor evaporator of the HAVC assembly through connecting pipelines, and a gas-liquid separator is arranged between the air-supplying enthalpy-increasing compressor and the indoor evaporator;
the indoor condenser right-hand member is connected with the second check valve through the connecting line, the second check valve other end is connected with electromagnetism electronic expansion valve and fifth solenoid valve through the connecting line respectively, the electromagnetism electronic expansion valve other end is connected with outdoor heat exchanger, the fifth solenoid valve other end is connected with the left end of plate heat exchanger through first electronic expansion valve.
2. The low-temperature heat pump air-conditioning device of the new energy automobile as claimed in claim 1, wherein a fourth P-T sensor and a fourth solenoid valve are connected between the plate heat exchanger and the vapor-replenishing enthalpy-increasing compressor, and the plate heat exchanger and the fourth P-T sensor are further communicated with the vapor-replenishing enthalpy-increasing compressor and the vapor-liquid separator through connecting pipelines between a seventh solenoid valve and the vapor-replenishing enthalpy-increasing compressor.
3. The low-temperature heat pump air-conditioning device of the new energy automobile as claimed in claim 1, wherein the right end of the indoor evaporator is connected with the second outdoor heat exchanger through a second electronic expansion valve and a second P-T sensor, a third P-T sensor and a first one-way valve are connected between the gas-liquid separator and the indoor evaporator, and a connecting pipeline between the third P-T sensor and the first one-way valve is communicated with a connecting pipeline between the second electronic expansion valve and the second P-T sensor through a second solenoid valve.
4. The low-temperature heat pump air-conditioning device of the new energy automobile as claimed in claim 1, wherein a first P-T sensor and a third solenoid valve are connected between the air-supply enthalpy-increasing compressor and the indoor condenser, and a connecting pipeline between the first P-T sensor and the third solenoid valve is communicated with a connecting pipeline between the first solenoid valve and a fifth solenoid valve as well as a second one-way valve.
5. The low-temperature heat pump air-conditioning device of the new energy automobile as claimed in claim 1, wherein the outdoor heat exchanger is communicated with a connecting pipeline between the fifth solenoid valve and the first electronic expansion valve through a sixth solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120121100.5U CN214324840U (en) | 2021-01-15 | 2021-01-15 | Low-temperature heat pump air conditioner device of new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120121100.5U CN214324840U (en) | 2021-01-15 | 2021-01-15 | Low-temperature heat pump air conditioner device of new energy automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113895205A (en) * | 2021-10-11 | 2022-01-07 | 安徽江淮松芝空调有限公司 | Economical heat pump system with waste heat recovery function |
| CN114211930A (en) * | 2021-12-06 | 2022-03-22 | 徐州徐工基础工程机械有限公司 | Whole machine cooling and heating system for electric drive drilling machine |
| CN114274731A (en) * | 2021-12-30 | 2022-04-05 | 安徽江淮汽车集团股份有限公司 | Ultralow-temperature heat pump air conditioner control system and method and electric automobile |
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2021
- 2021-01-15 CN CN202120121100.5U patent/CN214324840U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113895205A (en) * | 2021-10-11 | 2022-01-07 | 安徽江淮松芝空调有限公司 | Economical heat pump system with waste heat recovery function |
| CN113895205B (en) * | 2021-10-11 | 2023-11-17 | 安徽江淮松芝空调有限公司 | Take waste heat recovery's economic heat pump system |
| CN114211930A (en) * | 2021-12-06 | 2022-03-22 | 徐州徐工基础工程机械有限公司 | Whole machine cooling and heating system for electric drive drilling machine |
| CN114274731A (en) * | 2021-12-30 | 2022-04-05 | 安徽江淮汽车集团股份有限公司 | Ultralow-temperature heat pump air conditioner control system and method and electric automobile |
| CN114274731B (en) * | 2021-12-30 | 2024-03-29 | 安徽江淮汽车集团股份有限公司 | Ultra-low temperature heat pump air conditioner control system and method and electric automobile |
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