CN217574787U - CO 2 Heat pump air conditioning system and vehicle - Google Patents
CO 2 Heat pump air conditioning system and vehicle Download PDFInfo
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- CN217574787U CN217574787U CN202221690737.7U CN202221690737U CN217574787U CN 217574787 U CN217574787 U CN 217574787U CN 202221690737 U CN202221690737 U CN 202221690737U CN 217574787 U CN217574787 U CN 217574787U
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Abstract
The utility model provides a CO 2 Heat pump air conditioning system and vehicle, the utility model discloses a CO 2 The heat pump air conditioning system comprises a refrigerant loop and a battery heat exchange loop, wherein the refrigerant loop comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and CO which are connected through refrigerant pipelines 2 The battery heat exchange loop comprises a radiator, a heat exchange pump and a battery which are connected through a heat exchange pipeline, wherein the indoor heat exchanger comprises an internal heat exchanger and an evaporator which are connected in series, and a heat exchanger for exchanging heat between the refrigerant loop and the battery heat exchange loop is arranged between the refrigerant loop and the battery heat exchange loop. The utility modelForm (A) of CO 2 The heat pump air conditioning system can not only heat the battery, but also refrigerate the battery, and simultaneously can also realize heat management of the passenger compartment and heat management of the battery, and through an optimized framework, the air conditioning system is simpler in structure and lower in cost, can simplify the carrying and arrangement of the whole vehicle, has higher integration level, is beneficial to the connection of pipelines, and has good use effect.
Description
Technical Field
The utility model relates to an air conditioner technical field, in particular to CO 2 A heat pump air conditioning system. The utility model also relates to an application that has this CO 2 A vehicle with a heat pump air conditioning system.
Background
Existing CO 2 The structure of the heat pump air conditioning system has the disadvantages of complex structure, more valves and high cost. In addition, existing CO 2 The air source heat pump mode and the dehumidification mode refrigerant flow path in the heat pump air conditioner type heating switching dehumidification process are different, and valve group switching is needed. The outdoor heat exchanger and the evaporator need to perform reversing operation and high-low pressure switching of the refrigerant flow direction, which can cause the problems of long switching time, switching noise during high-low pressure switching and the like.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a CO 2 The heat pump air conditioning system optimizes the system architecture, improves the integration level, reduces the cost and is beneficial to the arrangement of the whole vehicle carrying.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
CO (carbon monoxide) 2 The heat pump air conditioning system comprises a refrigerant loop and a battery heat exchange loop;
the refrigerant circuit comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and CO which are connected through refrigerant pipelines 2 A gas-liquid separator;
the battery heat exchange loop comprises a radiator, a heat exchange pump and a battery which are connected through a heat exchange pipeline;
the indoor heat exchanger comprises an internal heat exchanger and an evaporator which are arranged in series;
and a heat exchanger used for exchanging heat between the refrigerant loop and the battery heat exchange loop is arranged between the refrigerant loop and the battery heat exchange loop.
Further, the air heating PTC is arranged on one side of the indoor heat exchanger.
Furthermore, the battery heat exchange loop also comprises a motor heat dissipation module connected in parallel in the heat exchange pipeline, and the motor heat dissipation module is connected with a motor heat dissipation pump in series; and/or the battery heat exchange loop comprises a bypass pipeline connected in parallel in the heat exchange pipeline, and a bypass electronic expansion valve is arranged on the bypass pipeline.
Furthermore, a one-way valve positioned at one side of the battery is arranged in the heat exchange pipeline, and/or a water overflow tank is arranged in the battery heat exchange loop.
Furthermore, the outdoor heat exchanger is arranged on the air suction side of the heat dissipation fan.
Further, the heat exchanger is connected in parallel in the battery heat exchange loop.
Furthermore, the outlet of the compressor is connected with a four-way reversing valve, the four-way reversing valve is respectively connected with the internal heat exchanger through a first refrigerant pipeline, is connected with one end of the outdoor heat exchanger through a second refrigerant pipeline, and is connected with the inlet of the compressor through a third refrigerant pipeline; the other end of the outdoor heat exchanger is connected with the evaporator through a fourth refrigerant pipeline.
Further, the internal heat exchanger and the evaporator are connected in series by a fifth refrigerant line; said heat exchanger is connected in parallel between said fifth refrigerant line and said fourth refrigerant line by a sixth refrigerant line; a first electronic expansion valve is arranged on the fifth refrigerant pipeline and positioned between the sixth refrigerant pipeline connection point and the evaporator, and a second electronic expansion valve is arranged on the fourth refrigerant pipeline and positioned between the sixth refrigerant pipeline connection point and the evaporator; and a third electronic expansion valve and a fourth electronic expansion valve which are positioned on two sides of the heat exchanger are arranged on the sixth refrigerant pipeline.
Furthermore, the four-way reversing valve comprises four electric control stop valves which are sequentially connected end to end, and a valve port is arranged between every two adjacent electric control stop valves.
Compared with the prior art, the utility model discloses following advantage has:
CO of the utility model 2 The heat pump air conditioning system can not only heat the battery, but also refrigerate the battery through the heat exchanger arranged between the refrigerant loop and the heat exchange tube loop. And the passenger compartment heat management and the battery heat management can be realized through different combined loops of the refrigerant loop and the heat exchange tube loop. And by optimizing the architecture, make the bookCO of utility model 2 The heat pump air-conditioning system has the advantages of simple structure, low cost, high integration level and favorable pipeline connection, and can simplify the arrangement carried by the whole vehicle, thereby having good use effect.
Another object of the present invention is to provide a vehicle, wherein the CO is disposed in the vehicle 2 A heat pump air conditioning system.
The utility model discloses a vehicle and foretell CO 2 Compared with the prior art, the heat pump air conditioning system has the same beneficial effects, and the details are not repeated.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 shows a CO according to an embodiment of the present invention 2 The structural schematic diagram of the heat pump air conditioning system;
fig. 2 is a schematic structural view of a four-way reversing valve according to an embodiment of the present invention;
description of reference numerals:
1. a heat sink; 2. an outdoor heat exchanger; 3. a heat radiation fan; 4. a motor heat dissipation pump; 5. a motor heat dissipation module; 6. a heat exchange pump; 7. a battery; 8. a one-way valve; 9. a heat exchanger; 11. a four-way reversing valve; 12. a compressor; 13. a CO2 gas-liquid separator; 14. a water overflow tank; 15. an HVAC assembly; 152. an internal heat exchanger; 153. an evaporator; 17. a wind-heating PTC; 19. bypassing the electronic expansion valve;
32. a heat exchange line; 33. a first refrigerant line; 34. a second refrigerant line; 35. a third refrigerant line; 36. a fourth refrigerant line; 37. a fifth refrigerant line; 38. a sixth refrigerant line; 39. a bypass line;
10. a first electronic expansion valve; 20. a second electronic expansion valve; 30. a third electronic expansion valve; 40. a fourth electronic expansion valve; 111. a first electrically controlled stop valve; 112. a second electrically controlled stop valve; 113. a third electrically controlled stop valve; 114. and a fourth electrically controlled stop valve.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that if terms indicating directions or positional relationships such as "up", "down", "inside", "outside", etc. appear, they are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same order, but are to be construed as referring to the same order.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection may be fixed, detachable, or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The present embodiment relates to a CO 2 The heat pump air conditioning system not only can heat and refrigerate the battery 7, but also can realize heat management of the passenger compartment and heat management of the battery, and has the advantages of simple structure and high integration level through optimizing the framework, thereby simplifying the arrangement carried by the whole vehicle and being beneficial to the connection of pipelines.
CO of the present embodiment in terms of overall constitution 2 Heat pump air conditioning System, as an exemplary configuration, the CO is shown in FIG. 1 2 The heat pump air conditioning system mainly comprises a refrigerant loop and a battery heat exchange loop. Wherein, a heat exchanger 9 for exchanging heat between the refrigerant loop and the battery heat exchange loop is arranged between the refrigerant loop and the battery heat exchange loop.
The refrigerant circuit of the present embodiment includes a compressor 12, an outdoor heat exchanger 2, an indoor heat exchanger, and CO connected by refrigerant lines 2 A gas-liquid separator 13. The indoor heat exchanger includes an inner heat exchanger 152 and an evaporator 153, which are disposed in series.
In detail, as shown in fig. 1, the four-way reversing valve 11 is connected to the outlet of the compressor 12, and the four-way reversing valve 11 is connected to the inner heat exchanger 152 through the first refrigerant line 33, connected to one end of the outdoor heat exchanger 2 through the second refrigerant line 34, and connected to the inlet of the compressor 12 through the third refrigerant line 35. The other end of the outdoor heat exchanger 2 is connected to the evaporator 153 through the fourth refrigerant line 36.
As shown in fig. 2 in combination with fig. 1, the four-way selector valve 11 of the present embodiment is structurally, specifically, four electrically controlled stop valves, that is, a first electrically controlled stop valve 111, a second electrically controlled stop valve 112, a third electrically controlled stop valve 113, and a fourth electrically controlled stop valve 114, which are shown in fig. 2 and connected end to end in sequence. And a valve port is arranged between every two adjacent electrically controlled stop valves 111. The switching loop can be realized by the combined opening and closing of the four electric control stop valves 111.
It should be noted that in this embodiment, the four-way reversing valve 11 is formed by using four electrically controlled stop valves 111, so that the problem of immaturity of the four-way valve applied to the automobile in the prior art can be solved, and the circuit switching can be timely and reliable.
As a preferred embodiment of the present embodiment, in the present embodiment, the internal heat exchanger 152 and the evaporator 153 are connected in series through the fifth refrigeration line 37. And, be equipped with the heat exchanger 9 that is used for heat exchange between the two between refrigerant circuit and the battery heat exchange circuit, through setting up the heat exchanger 9 that sets up between refrigerant circuit and heat exchange tube circuit, can realize the heat exchange of refrigerant and coolant to not only can realize heating for battery 7, also can realize giving battery 7 refrigeration.
Specifically, with continued reference to fig. 1, in this embodiment, the heat exchanger 9 is connected in parallel in the battery heat exchange circuit and in parallel between the fifth refrigerant line 37 and the fourth refrigerant line 36 by a sixth refrigerant line 38. The fifth refrigerant line 37 is provided with the first electronic expansion valve 10 located between the connection point of the sixth refrigerant line 38 and the evaporator 153, and the fourth refrigerant line 36 is provided with the second electronic expansion valve 20 located between the connection point of the sixth refrigerant line 38 and the evaporator 153.
Meanwhile, a third electronic expansion valve 30 and a fourth electronic expansion valve 40 are provided on the sixth refrigerant pipe 38 on both sides of the heat exchanger 9. Thus, by providing the first electronic expansion valve 10, the second electronic expansion valve 20, the third electronic expansion valve 30, and the fourth electronic expansion valve 40, it is advantageous to precisely control the flow rate of the refrigerant according to the temperature or pressure in the pipe.
In this embodiment, through each refrigeration pipeline that sets up, can adopt less connecting pipe and valve to realize the thermal management function of system, make the structure comparatively simple moreover, and the cost is lower to also be convenient for arrange the installation.
In addition, CO of the present example 2 The heat pump air conditioning system further includes a wind-warming PTC17, and the wind-warming PTC17 is particularly disposed at one side of the indoor heat exchanger. Compared with the structural form of adopting the water heating PTC, the air heating PTC17 can save the four-way valve, the overflow tank, the water pump, the connecting pipeline and the like, and can greatly save the system cost.
It is worth explaining here that the Air-warming PTC17, the interior heat exchanger 152 and the evaporator 153 are disposed in an HVAC (Heating, ventilation and Air Conditioning) assembly 15. Therefore, the air heating PTC17, the internal heat exchanger 152 and the evaporator 153 are integrated in the HVAC assembly 15, the integration level of parts can be improved, and the whole vehicle arrangement is facilitated.
The battery heat exchange circuit of the present embodiment comprises a heat sink 1, a heat exchange pump 6 and a battery 7 connected by a heat exchange line 32. Wherein, in the battery heat exchange loop, a one-way valve 8 is further arranged, and the one-way valve 8 is specifically positioned at one side of the battery 7 and is used for controlling the flow direction of the cooling liquid and preventing the reverse flow of the cooling liquid.
And as a preferred embodiment, the battery heat exchange loop further comprises a motor heat dissipation module 5 connected in parallel in the heat exchange pipeline 32, and the motor heat dissipation module 5 is connected in series with the motor heat dissipation pump 4. From this for the coolant liquid flows through motor heat dissipation module 5 to can carry out cooling to motor heat dissipation module 5, simultaneously, motor heat dissipation module 5's heat is taken away by the coolant liquid, can transmit to the refrigerant through heat exchanger 9, thereby but make full use of the heat production of motor 7 during operation, reach the effect that reduces the heating energy consumption.
It should be noted that the motor heat dissipation module 5 may adopt a structure in the prior art, and the motor heat dissipation module 5 includes a module connected to an outlet of the motor heat dissipation pump 4 and having a vehicle-mounted charger, a distribution box and a power converter, and a multi-domain controller module and a motor sequentially connected in series with the module.
In addition, in the present embodiment, a bypass line 39 is connected in parallel to the heat exchange circuit of the battery 7, and the bypass line 39 is provided with a bypass electronic expansion valve 19, so that whether the bypass line 39 is conducted or not can be controlled by opening or closing the bypass electronic expansion valve 19.
In addition, CO of the present example 2 The heat pump air-conditioning system also comprises a cooling fan 3, and the radiator 1 and the outdoor heat exchanger 2 are sequentially arranged on the air suction side of the cooling fan 3, so that heat exchange is favorably carried out on the air flow near the outdoor heat exchanger 2 and the radiator 1.
In addition, as a preferable arrangement form of the present embodiment, in the present embodiment, the overflow tanks 14 are provided in the heat exchange loops of the batteries 7.
It should be noted that the first electronic expansion valve 10, the second electronic expansion valve 20, the third electronic expansion valve 30, the fourth electronic expansion valve 40, the heat exchanger 9 and the CO2 gas-liquid separator 13 of the present embodiment can be integrated into one thermal management module. In addition, it should be noted that the four-way valve 1 may also be integrated into an integrated component, or the four-way valve 11 may also be integrated into a thermal management module, so that the integration level of the components may be improved, the loops are not overlapped, the whole vehicle carrying arrangement is facilitated, the pipeline cost may be saved, the pipeline butt joint interface may be reduced, and the annual leakage amount may be reduced.
CO of the example 2 The heat pump air-conditioning system can realize various vehicle heat management modes in the vehicle work by controlling the opening and closing of each electronic expansion valve.
Specifically, for example, by starting the first electronic expansion valve 10, the second electronic expansion valve 20, the first electronic control stop valve 111, and the third electronic control stop valve 113, and closing the third electronic expansion valve 30, the fourth electronic expansion valve 40, the second electronic control stop valve 112, and the fourth electronic control stop valve 114, a passenger compartment cooling operation mode can be realized, so as to cool the passenger compartment, and meet the air conditioning use requirements of the passengers in summer.
By starting the first electronic expansion valve 10, the second electronic expansion valve 20, the second electronic control stop valve 112 and the fourth electronic control stop valve 114 and closing the third electronic expansion valve 30, the fourth electronic expansion valve 40, the first electronic control stop valve 111 and the third electronic control stop valve 113, the heating mode of the member cabin can be realized at the moment, and the air conditioner use requirements of the members in winter can be met.
By starting the first electronic expansion valve 10, the second electronic expansion valve 20, the third electronic expansion valve 30, the fourth electronic expansion valve 40, the first electronic control stop valve 111 and the third electronic control stop valve 113 and closing the second electronic control stop valve 112 and the fourth electronic control stop valve 114, a double refrigeration working mode of the passenger compartment and the battery can be realized at the moment, so that the passenger compartment and the battery can be simultaneously refrigerated, the battery can be at the optimal working temperature in a high temperature environment in summer, and meanwhile, the air conditioner use requirement of the passenger in summer can be met.
By starting the third electronic expansion valve 30, the fourth electronic expansion valve 40, the first electronic control stop valve 111 and the third electronic control stop valve 113, and closing the first electronic expansion valve 10, the second electronic expansion valve 20, the second electronic control stop valve 112 and the fourth electronic control stop valve 114, the refrigeration of the battery can be realized, so that the battery can be at the optimal working temperature even under the condition of high external temperature in summer, and the service life of the battery can be prolonged.
By starting the third electronic expansion valve 30, the fourth electronic expansion valve 40, the second electronic stop valve 112 and the fourth electronic stop valve 114 and closing the first electronic expansion valve 10, the second electronic expansion valve 20, the first electronic stop valve 111 and the third electronic stop valve 113, the second electronic expansion valve 20 is in a throttling state, and at the moment, the battery can be heated, so that the battery can be at the optimal working temperature even under the condition of low external temperature in winter, and the service life of the battery is prolonged.
By starting the first electronic expansion valve 10, the second electronic expansion valve 20, the third electronic expansion valve 30, the fourth electronic expansion valve 40, the second electronic stop valve 112 and the fourth electronic stop valve 114 and closing the first electronic stop valve 111 and the third electronic stop valve 113, wherein the second electronic expansion valve 20 and the fourth electronic expansion valve 40 are in a throttling state, and the third electronic expansion valve 30 can regulate the temperature by regulating the flow, a double heating working mode of a passenger compartment and a battery can be realized at the moment, so that the battery can be in an optimal working temperature in a low-temperature environment in winter, and meanwhile, the air-conditioning use requirements of the passenger in winter can be met.
CO of the example 2 The heat pump air conditioning system utilizes the heat exchangers in the HVAC assembly 15 in a combined mode, can be a condenser in an extremely cold environment, can be an evaporator 153 in an extremely hot environment, and can meet all-weather working conditions by one condenser and one evaporator 153 under the dehumidification working condition in spring and autumn. And the system performance and the energy efficiency ratio can be improved under the extremely hot working condition and the extremely cold working condition. In addition, under the limit working condition, such as the cold storage vehicle-forbidden working condition in summer, the battery can be heated by the refrigerant loop, the passenger compartment can also be cooled, and the dependence of the air conditioning system on the PTC is reduced.
Meanwhile, CO of the present example 2 The heat pump air conditioning system has the characteristics of simple structure and low cost, can simplify the arrangement carried by the whole vehicle, can achieve high integration level, is favorable for the connection of pipelines, and has good use effect.
Example two
The present embodiment relates to a vehicle having a CO as described in the first embodiment 2 A heat pump air conditioning system.
CO of the embodiment is used for vehicle passing 2 The heat pump air conditioning system is beneficial to improving the service performance of the vehicle and has good use effect.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. CO (carbon monoxide) 2 The heat pump air conditioning system is characterized in that:
the system comprises a refrigerant loop and a battery heat exchange loop;
the refrigerant circuit comprises a compressor (12), an outdoor heat exchanger (2), an indoor heat exchanger and CO which are connected through refrigerant pipelines 2 A gas-liquid separator (13);
the battery heat exchange loop comprises a radiator (1), a heat exchange pump (6) and a battery (7) which are connected through a heat exchange pipeline (32);
wherein the content of the first and second substances,
the indoor heat exchanger comprises an internal heat exchanger (152) and an evaporator (153) which are arranged in series;
and a heat exchanger (9) for exchanging heat between the refrigerant loop and the battery heat exchange loop is arranged between the refrigerant loop and the battery heat exchange loop.
2. CO according to claim 1 2 The heat pump air conditioning system is characterized in that:
and the air heating PTC (17) is arranged on one side of the indoor heat exchanger, and the air heating PTC (17) is arranged on one side of the indoor heat exchanger.
3. CO according to claim 1 2 The heat pump air conditioning system is characterized in that:
the battery heat exchange loop also comprises a motor heat dissipation module (5) connected in parallel in the heat exchange pipeline (32), and the motor heat dissipation module (5) is connected with a motor heat dissipation pump (4) in series; and/or the presence of a gas in the gas,
the battery heat exchange loop comprises a bypass pipeline (39) connected in parallel in the heat exchange pipeline (32), and a bypass electronic expansion valve (19) is arranged on the bypass pipeline (39).
4. CO according to claim 1 2 The heat pump air conditioning system is characterized in that:
a one-way valve (8) positioned at one side of the battery (7) is arranged in the heat exchange pipeline (32), and/or a water overflow tank (14) is arranged in the battery heat exchange loop.
5. CO according to claim 1 2 The heat pump air conditioning system is characterized in that:
the outdoor heat exchanger is characterized by further comprising a heat radiation fan (3), and the heat radiator (1) and the outdoor heat exchanger (2) are sequentially arranged on the air suction side of the heat radiation fan (3).
6. CO according to claim 1 2 The heat pump air conditioning system is characterized in that:
the heat exchanger (9) is connected in parallel in the battery heat exchange loop.
7. CO according to any one of claims 1 to 6 2 The heat pump air conditioning system is characterized in that:
the outlet of the compressor (12) is connected with a four-way reversing valve (11), the four-way reversing valve (11) is respectively connected with the internal heat exchanger (152) through a first refrigerant pipeline (33), connected with one end of the outdoor heat exchanger (2) through a second refrigerant pipeline (34) and connected with the inlet of the compressor (12) through a third refrigerant pipeline (35);
the other end of the outdoor heat exchanger (2) is connected with the evaporator (153) through a fourth refrigerant pipeline (36).
8. CO according to claim 7 2 The heat pump air conditioning system is characterized in that:
said internal heat exchanger (152) and said evaporator (153) being connected in series by a fifth refrigerant line (37);
said heat exchanger (9) being connected in parallel between said fifth refrigerant line (37) and said fourth refrigerant line (36) by a sixth refrigerant line (38);
a first electronic expansion valve (10) positioned between the connection point of the sixth refrigerant pipeline (38) and the evaporator (153) is arranged on the fifth refrigerant pipeline (37), and a second electronic expansion valve (20) positioned between the connection point of the sixth refrigerant pipeline (38) and the evaporator (153) is arranged on the fourth refrigerant pipeline (36);
and a third electronic expansion valve (30) and a fourth electronic expansion valve (40) which are positioned at two sides of the heat exchanger (9) are arranged on the sixth refrigerant pipeline (38).
9. CO according to claim 7 2 The heat pump air conditioning system is characterized in that:
the four-way reversing valve (11) comprises four electric control stop valves which are sequentially connected end to end, and a valve port is arranged between every two adjacent electric control stop valves.
10. A vehicle, characterized in that:
the vehicle being provided with a CO according to any one of claims 1 to 9 2 A heat pump air conditioning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221690737.7U CN217574787U (en) | 2022-06-30 | 2022-06-30 | CO 2 Heat pump air conditioning system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221690737.7U CN217574787U (en) | 2022-06-30 | 2022-06-30 | CO 2 Heat pump air conditioning system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217574787U true CN217574787U (en) | 2022-10-14 |
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ID=83533880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221690737.7U Active CN217574787U (en) | 2022-06-30 | 2022-06-30 | CO 2 Heat pump air conditioning system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217574787U (en) |
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2022
- 2022-06-30 CN CN202221690737.7U patent/CN217574787U/en active Active
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