CN212124785U - Overhead multi-interface battery heat integration heat pump air conditioner product - Google Patents
Overhead multi-interface battery heat integration heat pump air conditioner product Download PDFInfo
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- CN212124785U CN212124785U CN202020665006.1U CN202020665006U CN212124785U CN 212124785 U CN212124785 U CN 212124785U CN 202020665006 U CN202020665006 U CN 202020665006U CN 212124785 U CN212124785 U CN 212124785U
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Abstract
The utility model discloses a many interfaces of overhead battery heat integration heat pump air conditioner product is used in the pure [ electric ] motor coach of new forms of energy, and this heat pump air conditioner product includes condenser, condensation fan, defroster, battery thermal management system, battery side system and defrosting side system, and wherein battery side system and defrosting side system share condenser and condensation fan, and battery side system and battery thermal management system integration are the battery heat integration system, and defrosting side system and defroster integration are the defrosting integration system. The utility model provides a many interfaces of overhead battery heat integration heat pump air conditioner product provides a plurality of heat exchange medium interfaces for each heat exchange system of new forms of energy passenger train, realizes sharing with the accessory of similar function product wherein, effectively improves integrating of whole car spare part, reduces product cost, weight, fault rate, reduces whole car space and occupies, alleviates whole car spare part spatial arrangement pressure.
Description
Technical Field
The utility model belongs to new forms of energy passenger train heat pump air conditioner product field, concretely relates to many interfaces of overhead battery heat integration heat pump air conditioner product.
Background
Under the large background of energy conservation and consumption reduction of the current new energy passenger car, the pure electric air conditioning system takes high performance, low energy consumption, light weight and low cost as development targets. And if accessories of products with similar functions are shared, the integration of the parts of the whole vehicle is effectively improved, the product cost, the weight and the failure rate are reduced, and the occupied space of the whole vehicle is reduced. It would be one way to overcome this technical challenge by providing different kinds of heat exchange medium interfaces for each part. The technical problems to be solved by the new energy air conditioner are solved by how to realize the heat exchange of different media of each part and the coordination of each part among product control, which parts can be integrated, the structure establishment of a product platform and the like.
Most of the existing pure electric air conditioners adopt R407c refrigerant, refrigeration is performed by a compressor to drive refrigerant to circulate in an air conditioning system, and heat in the vehicle is discharged out of the vehicle; the heating modes mainly comprise heat pump type heating and PTC electric auxiliary heating, and the two modes can be configured independently or in a combined mode according to regional climate conditions of the vehicle to ensure normal heating requirements of the vehicle.
The battery thermal management adopts an independent refrigeration system, a refrigerant and water are adopted, refrigeration discharges heat out of the vehicle after acting on the refrigerant through a compressor, the refrigerant and an aqueous medium exchange heat, and the heat generated by the battery work is taken away by the aqueous medium to cool the battery.
The cold and warm defroster adopts a built-in small air conditioning unit and adopts refrigerant and PTC, refrigeration exchanges heat with the air side through the refrigerant of an external refrigeration system, and the temperature of indoor air is reduced to cool a driver; the heating adopts PTC electric heating to warm the driver area and defrost the windshield.
The heat exchange system for the mainstream new energy passenger car in the current market mainly comprises a passenger car air conditioner, a battery heat management module and a cooling and heating defroster, and three independent heat exchange systems easily cause the problems of various parts and materials, large occupied space, high failure rate, high product cost, high weight and the like. Each product function is complicated, and the whole car is connected with pipeline, circuit more, influences the product pleasing to the eye, increases and arranges the degree of difficulty. The requirements of reducing weight and saving energy to improve the endurance mileage of the vehicle are completely contradictory, and a lot of obstacles are caused for the promotion of new energy products.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above-mentioned prior art, the utility model aims at providing a many interfaces of overhead battery heat integration heat pump air conditioner product.
The purpose of the utility model is realized through the following technical scheme.
The utility model provides an overhead many interfaces battery heat integration heat pump air conditioner product, includes condenser, condensation fan, defroster and battery thermal management system, still includes:
a battery side system and a defrosting side system which share the condenser and the condensing fan;
the battery-side system includes:
a left evaporator, a left gas-liquid separator and a left compressor which are communicated with the condenser in turn,
and a left four-way valve component for changing the flow direction of the refrigerant of the battery side system, wherein the left four-way valve component is respectively communicated with the condenser, the left evaporator, the left compressor and the left gas-liquid separator,
and plate heat exchangers connected in parallel at both ends of the left evaporator,
the battery thermal management system is communicated with two ends of the plate heat exchanger;
the defrost side system includes:
a right evaporator, a right gas-liquid separator and a right compressor which are communicated with the condenser in turn,
and a right four-way valve component for changing the flow direction of the refrigerant of the defrosting side system, the right four-way valve component is respectively communicated with the condenser, the right evaporator, the right compressor and the right gas-liquid separator,
the defroster is connected in parallel at two ends of the right evaporator.
A first PTC electric heater is arranged on a refrigerant pipeline of the battery thermal management system, and an expansion water tank is connected to the refrigerant pipeline of the battery thermal management system.
The defroster department is provided with second PTC electrical heating, the both ends of defroster are provided with the stop valve.
A left dryer, a left electronic expansion valve and a left filter are sequentially arranged between the condenser and the left evaporator, one end of the plate type heat exchanger is connected between the left dryer and the left electronic expansion valve in a side mode, and an auxiliary electronic expansion valve is arranged between the plate type heat exchanger and the side connection point.
And a right dryer, a right electronic expansion valve and a right filter are sequentially arranged between the condenser and the right evaporator, and one end of the defroster is connected between the right dryer and the right electronic expansion valve.
Further comprising:
the high-voltage electric control box is provided for the heat pump air-conditioning product,
and a power module for providing low voltage electricity for the heat pump air conditioner product.
And third PTC electric heaters are arranged at the left evaporator and the right evaporator.
The utility model has the advantages that: the utility model provides a many interfaces of overhead battery heat integration heat pump air conditioner product provides a plurality of heat exchange medium interfaces for each heat exchange system of new forms of energy passenger train, realizes sharing with the accessory of similar function product wherein, effectively improves integrating of whole car spare part, reduces product cost, weight, fault rate, reduces whole car space and occupies, alleviates whole car spare part spatial arrangement pressure. The two functions of refrigeration and heating are improved for the new energy passenger car through the combination of cold medium mass flow direction conversion and electric auxiliary heat.
Drawings
Fig. 1 is a schematic structural view of the heat pump air conditioner product of the present invention.
Fig. 2 is a system schematic diagram of the heat pump air conditioner product of the present invention.
In the drawing, 10 is a condenser, 11 is a condensing fan, 20 is a left compressor, 21 is a left evaporator, 22 is a left evaporating fan, 23 is a left gas-liquid separator, 24 is a left four-way valve assembly, 25 is a left dryer, 26 is a left electronic expansion valve, 27 is a left filter, 28 is a plate heat exchanger, 29 is an auxiliary electronic expansion valve, 30 is a right compressor, 31 is a right evaporator, 32 is a right evaporating fan, 33 is a right gas-liquid separator, 34 is a right four-way valve assembly, 35 is a right dryer, 36 is a right electronic expansion valve, 37 is a right filter, 40 is a battery thermal management system, 41 is a first PTC electrical heating, 42 is an expansion tank, 43 is a water pump, 50 is a defroster, 51 is a second PTC electrical heating, 52 is a stop valve, 53 is a defroster expansion valve, 54 is a defroster evaporator, 55 is a defroster evaporating fan, 60 is a high-pressure switch, 61 is a low-pressure switch, 62 is an exhaust temperature sensor, 63 is an air suction temperature sensor, 64 is a coil pipe temperature sensor, 65 is a temperature pressure sensor, 66 is a return water temperature sensor, 67 is an outlet water temperature sensor, 68 is an outdoor temperature sensor, 70 is an electric cabinet, 71 is a power supply module, and 72 is a third PTC electric heating.
Detailed Description
As shown in fig. 1 to 2, an overhead multi-interface battery heat integration heat pump air-conditioning product is used in a new energy electric bus, and includes a condenser 10, a condensing fan 11, a defroster 50, a battery heat management system 40, a battery side system and a defrosting side system, an electric cabinet 70 for providing high voltage electricity for the heat pump air-conditioning product, and a power module 71 for providing low voltage electricity for the heat pump air-conditioning product. The battery side system and the defrosting side system share a condenser 10 and a condensing fan 11, the battery side system and the battery thermal management system 40 are integrated into a battery thermal integration system, and the battery thermal integration system participates in the refrigeration and heating of the passenger car on one hand and cools the battery of the passenger car on the other hand; the defrosting side system and the defroster 50 are integrated into a defrosting integrated system, and the defrosting integrated system participates in the refrigeration and heating of the passenger car on one hand and provides the refrigeration and heating for the driver area of the passenger car on the other hand. It should be noted that, the battery thermal management system 40 and the defroster 50 are both prior art on the existing electric passenger car, and do not belong to the design concept of the present invention.
The battery side system comprises a left evaporator 21, a left gas-liquid separator 23 and a left compressor 20 which are sequentially communicated with the condenser 10, and a left four-way valve assembly 24 for changing the flow direction of a refrigerant of the battery side system, wherein the left four-way valve assembly 24 is respectively communicated with the condenser 10, the left evaporator 21, the left compressor 20 and the left gas-liquid separator 23, and during refrigeration, the flow direction of the refrigerant of the battery side system is as follows: the left compressor 20, the condenser 10, the left evaporator 21, the left gas-liquid separator 23 and the left compressor 20 change the flow direction of a refrigerant through the left four-way valve assembly 24 during heating, and the changed flow direction of the refrigerant is changed into: left compressor 20-left evaporator-21 condenser 10-left gas-liquid separator 23-left compressor 20.
The plate heat exchangers 28 are connected in parallel at two ends of the left evaporator 21, and the battery thermal management system 40 is communicated with two ends of the plate heat exchangers 28; the cooling medium in the battery thermal management system 40 exchanges heat with the refrigerant of the battery side system through the plate heat exchanger 28, so as to reduce the temperature of the refrigerant in the battery thermal management system 40, and further reduce the temperature of the battery.
The defrosting side system comprises a right evaporator 31, a right gas-liquid separator 33 and a right compressor 30 which are sequentially communicated with the condenser 10, and a right four-way valve assembly 34 for changing the flow direction of the defrosting side system refrigerant, wherein the right four-way valve assembly 34 is respectively communicated with the condenser 10, the right evaporator 31, the right compressor 30 and the right gas-liquid separator 33, and during refrigeration, the flow direction of the defrosting side system refrigerant is as follows: during heating, the right compressor 30, the condenser 10, the right evaporator 31, the right gas-liquid separator 33 and the right compressor 30 change the flow direction of a refrigerant through the right four-way valve assembly 34, and the changed flow direction of the refrigerant is changed into: right compressor 30-right evaporator 31-condenser 10-right gas-liquid separator 33-right compressor 30.
The two ends of the right evaporator 31 are connected in parallel with the defroster 50, so that the refrigerant in the defroster 50 participates in the refrigerant cycle of the defrosting-side system, and it should be noted that the refrigerant in the defroster 50 and the refrigerant in the defrosting-side system are the same refrigerant medium, and the refrigerant in the battery thermal management system 40 and the refrigerant in the battery-side system may be different refrigerant media.
Further, a refrigerant pipeline of the battery thermal management system 40 is provided with a first PTC electric heater 41, and the first PTC electric heater 41 is used for heating a refrigerant in the battery thermal management system 40 to heat the battery. An expansion water tank 42 is connected beside a refrigerant pipeline of the battery thermal management system 40, the expansion water tank 42 is preferably connected beside a water outlet refrigerant pipeline of the battery thermal management system 40, and the expansion water tank 42 is used for supplementing a refrigerant medium to the battery thermal management system 40 and providing a charging port.
Further, a second PTC electric heater 51 is arranged at the defroster 50, when the defroster 50 needs to be heated, the second PTC electric heater 51 is used for heating, and does not participate in the heating cycle of the defrosting side system, in order to ensure that the defroster 50 is turned on and off, stop valves 52 are arranged at two ends of the defroster 50, and the stop valves 52 are respectively arranged on a defroster air return pipe and a defroster liquid outlet pipe.
Further, a left dryer 25, a left electronic expansion valve 26, and a left filter 27 are sequentially disposed between the condenser 10 and the left evaporator 21, one end of a plate heat exchanger 28 is connected in a side-by-side manner between the left dryer 25 and the left electronic expansion valve 26, and an auxiliary electronic expansion valve 29 is disposed between the plate heat exchanger 28 and the side-by-side point.
Further, a right dryer 35, a right electronic expansion valve 36, and a right filter 37 are sequentially disposed between the condenser 10 and the right evaporator 31, and one end of the defroster 50 is connected between the right dryer 35 and the right electronic expansion valve 36.
Further, the left evaporator 21 and the right evaporator 31 are both provided with a third PTC electric heater 72, and the third PTC electric heater 72 participates in operation in a low-temperature environment and under the condition that the heat pump air conditioner heating performance is insufficient, and heats air in the vehicle after being turned on.
The utility model provides an overhead multi-interface battery heat integration heat pump air conditioner product, a high-voltage switch 60 and a low-voltage switch 61 are arranged in a battery side system and a defrosting side system, and the high-voltage switch 60 and the low-voltage switch 61 are arranged at two sides of a compressor; a coil temperature sensor 64 for detecting a coil temperature, the coil temperature sensor 64 being disposed between the condenser 10 and the dryer; a discharge temperature sensor 62 for detecting a discharge temperature, a suction temperature sensor 63 for detecting a suction temperature, the discharge temperature sensor 62 and the suction temperature sensor 63 being disposed at both sides of the compressor; a temperature and pressure sensor 65 for detecting the temperature and pressure of the refrigerant in the pipe of the plate heat exchanger 28, wherein the temperature and pressure sensor 65 is arranged in the pipe where the plate heat exchanger 28 is located; a return water temperature sensor 66 and an outlet water temperature sensor 67 for detecting the return water temperature and the outlet water temperature of the refrigerant in the battery thermal management system 40, wherein the return water temperature sensor 66 and the outlet water temperature sensor 67 are arranged at the return water end and the outlet water end of the plate heat exchanger 28; an outdoor temperature sensor 68 for detecting an outdoor temperature, the outdoor temperature sensor 68 being disposed between the condenser 10 and the dryer. The sensors are all connected with a controller of the heat pump air conditioner product.
The utility model discloses a working method does: the utility model provides a many interfaces of overhead battery heat integration heat pump air conditioner product adopts two compressors, wherein battery side system and battery thermal management system 40 share same left desicator 25, left vapour and liquid separator 23 and left compressor 21, the antifreeze is adopted to the cold medium matter in the battery thermal management system 40, the antifreeze medium is added into battery thermal management system 40 by expansion tank 42 after passenger train heat pump air conditioner product hookup, refrigerant in the battery side system fills in advance to left vapour and liquid separator 23 in like R407c etc.. The defrosting side system and the defroster 50 share the same right dryer 35, the right gas-liquid separator 33 and the right compressor 30, the refrigerant of the defroster 50 and the refrigerant in the battery side system are the same type of refrigerant, the refrigerant in the defrosting side system is filled into the right gas-liquid separator 33 in advance, the refrigerant leakage is prevented by closing the stop valve 52, the stop valve 52 is opened after the defroster 50 is vacuumized after the connection of the passenger car heat pump air-conditioning product, and the refrigerant circulates. The double compressors share the same condenser 10 and condensing fan 11, fully integrating similar functional accessories.
When the heat pump air conditioner product is in refrigeration operation: the electric cabinet 70 provides high voltage electricity for the heat pump air conditioner product, the power module 71 provides low voltage electricity, the heat pump air conditioner product is started, the gaseous refrigerant is compressed by the left compressor 20 and the right compressor 30, then gathered by the corresponding left four-way valve assembly 24 and the right four-way valve assembly 34, enters the condenser 10, exchanges heat with the outside air under the action of the condensing fan 11, the gaseous refrigerant is condensed into liquid refrigerant after the heat exchange, the liquid refrigerant is dried by the corresponding left drier 25 and the right drier 35, the dried liquid refrigerant is throttled by the corresponding left electronic expansion valve 26 and the right electronic expansion valve 36, then is converted into gas-liquid mixed refrigerant, enters the corresponding left evaporator 21 and the right evaporator 31, exchanges heat with the air in the vehicle and then is evaporated into the gaseous refrigerant under the action of the corresponding evaporating fans, refrigerating air in the vehicle; and then the gaseous refrigerant passes through the left four-way valve assembly 24, the left gas-liquid separator 23, the right four-way valve assembly 34 and the right gas-liquid separator 33 which respectively correspond to the gaseous refrigerant and finally returns to the left compressor 20 and the right compressor 30, and a refrigerant cycle is completed.
When the battery thermal management system is started, the auxiliary electronic expansion valve 29 is opened, the liquid refrigerant flowing through the left dryer 25 enters a pipeline where the plate heat exchanger 28 is located through a three-way pipe, the liquid refrigerant is converted into a gas-liquid mixed refrigerant after being throttled by the auxiliary electronic expansion valve 29 and enters the plate heat exchanger 28, the gas refrigerant exchanges heat with the antifreeze flowing through the plate heat exchanger 28 and is converted into a gaseous refrigerant, the temperature of the antifreeze is reduced, the gaseous refrigerant is converged with the refrigerant flowing through the left evaporator 21 and then enters the left gas-liquid separator 23, and finally enters the left compressor 20, and circulation is completed; the cooled antifreeze flows to the battery to absorb heat and cool the battery, is drained by the water pump 43 and circularly enters the plate heat exchanger 28 again to release heat to a refrigerant, is supplemented by the expansion water tank 42 when the circulating antifreeze of the battery thermal management system 40 is reduced, and provides a filling port for filling the antifreeze during maintenance.
When the defroster 50 works, the stop valve 52 is in an open state, the liquid refrigerant flowing through the right dryer 35 enters the defroster 50 through the three-way pipe, the liquid refrigerant passes through the defroster 50 and is converted into the gaseous refrigerant, the gaseous refrigerant is merged with the gaseous refrigerant flowing through the right evaporator 31 and then enters the right gas-liquid separator 33, and finally enters the right compressor 30 to complete the cycle. It should be noted that the defroster 50 also includes a defroster expansion valve 53, a defroster evaporator 54 and a defroster evaporator fan 55, the liquid refrigerant is throttled by the defroster expansion valve 53 and then converted into a gas-liquid mixed refrigerant to enter the defroster evaporator 54, heat exchange with the driver side in the evaporation process is performed to realize a cooling function for the driver, and the liquid refrigerant is converted into a gaseous refrigerant after evaporation.
When the heat pump air conditioner product is in heating operation: the electric cabinet 70 provides high voltage electricity for the heat pump air conditioner product, the power module 71 provides low voltage electricity, at this time, the left four-way valve assembly 24 and the right four-way valve assembly 34 are reversed, the gaseous refrigerant is compressed by the left compressor 20 and the right compressor 30, then collected by the left four-way valve assembly 24 and the right four-way valve assembly 34 and enters the corresponding left evaporator 21 and right evaporator 31 respectively, heat exchange is carried out with cold air in the vehicle under the action of the corresponding left evaporation fan 22 and right evaporation fan 33 respectively, the gaseous refrigerant is condensed into liquid refrigerant after heat exchange, the liquid refrigerant is throttled by the corresponding left electronic expansion valve 26 and right electronic expansion valve 36 respectively and then converted into gas-liquid mixed refrigerant, the gas-liquid mixed refrigerant is dried by the corresponding left drier 25 and right drier 35 respectively, the dried liquid refrigerant enters the condenser 10, under the action of the condensing fan 11, the gas-liquid mixed refrigerant is evaporated into a gaseous refrigerant after heat exchange with the external air, and then the gaseous refrigerant finally returns to the left compressor 20 and the right compressor 30 through the corresponding left four-way valve assembly 24, the left gas-liquid separator 23, the right four-way valve assembly 34, and the right gas-liquid separator 33, thereby completing a refrigerant cycle. Meanwhile, the heat pump air conditioner product has an electrified auxiliary heating function, and the third PTC electric heater 72 participates in working under the conditions of low-temperature environment and insufficient air conditioner heating performance and heats air in the vehicle after being turned on.
When the battery needs to be heated in an ultralow-temperature environment, the auxiliary electronic expansion valve 29 on the pipeline of the plate heat exchanger 28 is completely closed, the antifreeze circulates in the battery thermal management system 40, the antifreeze is heated by adopting first PTC electric heating, and the antifreeze flows through the battery to release heat and circulates to the first PTC electric heating part through the water pump 43; and the expansion tank 42 supplements the anti-freezing solution to the battery thermal management system 40.
When the defroster 50 heats, the defroster expansion valve 53 in the defroster 50 is closed, the stop valves 52 at the two ends of the defroster 50 are completely closed, and the air at the driver side is heated by adopting the second PTC electric heating, so that the purposes of heating and defrosting the driver area are achieved.
The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, and it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.
Claims (7)
1. An overhead multi-interface battery heat integrated heat pump air conditioner product, comprising a condenser (10), a condensing fan (11), a defroster (50) and a battery thermal management system (40), characterized by further comprising:
a battery side system and a defrosting side system which share a condenser (10) and a condensing fan (11);
the battery-side system includes:
a left evaporator (21), a left gas-liquid separator (23) and a left compressor (20) which are communicated with the condenser (10) in turn,
and a left four-way valve assembly (24) for changing the flow direction of the refrigerant of the battery side system, wherein the left four-way valve assembly (24) is respectively communicated with the condenser (10), the left evaporator (21), the left compressor (20) and the left gas-liquid separator (23),
and a plate heat exchanger (28) connected in parallel at both ends of the left evaporator (21),
the battery thermal management system (40) is communicated with two ends of the plate type heat exchanger (28);
the defrost side system includes:
a right evaporator (31), a right gas-liquid separator (33) and a right compressor (30) which are communicated with the condenser (10) in turn,
and a right four-way valve assembly (34) for changing the flow direction of the refrigerant of the defrosting side system, wherein the right four-way valve assembly (34) is respectively communicated with the condenser (10), the right evaporator (31), the right compressor (30) and the right gas-liquid separator (33),
the defroster (50) is connected in parallel to both ends of the right evaporator (31).
2. The overhead multi-interface battery heat integrated heat pump air-conditioning product according to claim 1, wherein a first PTC electrical heater (41) is disposed on a refrigerant pipeline of the battery thermal management system (40), and an expansion water tank (42) is connected to a refrigerant pipeline of the battery thermal management system (40).
3. The overhead multi-interface battery heat integrated heat pump air-conditioning product of claim 1, wherein a second PTC electrical heater (51) is provided at the defroster (50), and a shut-off valve (52) is provided at both ends of the defroster (50).
4. The overhead multi-interface battery heat integrated heat pump air-conditioning product according to claim 1, wherein a left dryer (25), a left electronic expansion valve (26) and a left filter (27) are sequentially disposed between the condenser (10) and the left evaporator (21), one end of the plate heat exchanger (28) is connected between the left dryer (25) and the left electronic expansion valve (26), and an auxiliary electronic expansion valve (29) is disposed between the plate heat exchanger (28) and the bypass point.
5. The overhead multi-interface battery heat integrated heat pump air-conditioning product according to claim 1, wherein a right dryer (35), a right electronic expansion valve (36) and a right filter (37) are sequentially disposed between the condenser (10) and the right evaporator (31), and one end of the defroster (50) is connected by-pass between the right dryer (35) and the right electronic expansion valve (36).
6. The overhead multi-interface battery heat integrated heat pump air conditioning product of claim 1, further comprising:
an electric control box (70) for providing high voltage electricity for the heat pump air conditioning product,
and a power module (71) for providing low voltage electricity for the heat pump air conditioning product.
7. The overhead multi-interface battery heat integrated heat pump air-conditioning product of claim 1, wherein a third PTC electrical heater (72) is provided at both the left evaporator (21) and the right evaporator (31).
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| CN202020665006.1U CN212124785U (en) | 2020-04-27 | 2020-04-27 | Overhead multi-interface battery heat integration heat pump air conditioner product |
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| CN202020665006.1U CN212124785U (en) | 2020-04-27 | 2020-04-27 | Overhead multi-interface battery heat integration heat pump air conditioner product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829833A (en) * | 2021-09-29 | 2021-12-24 | 浙江吉利控股集团有限公司 | Heat pump air conditioning system and automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829833A (en) * | 2021-09-29 | 2021-12-24 | 浙江吉利控股集团有限公司 | Heat pump air conditioning system and automobile |
| CN113829833B (en) * | 2021-09-29 | 2024-06-07 | 浙江吉利控股集团有限公司 | Heat pump air conditioning system and car |
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