Heat pump air conditioning system suitable for new energy vehicles
By designing a combination of a changing process vehicle external heat exchanger and a water-cooled heat exchanger, the insufficient heating and frosting problems of electric vehicle heat pump and air conditioning systems under low temperature conditions are solved, and the system structure is simplified and the operating efficiency is improved.
Patent Information
- Application Number
- CN201911095153.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-11
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2039-11-11
AI Technical Summary
In the existing electric vehicle heat pump air conditioning system, the external heat exchanger is insufficient in low temperature conditions and is prone to frost, and the inconsistent import and export leads to complex system pipeline connections.
Design a process-change-process external heat exchanger to make its inlet and outlet consistent in the condenser and evaporator states, simplify pipeline arrangement, reduce the number of valves, and use water-cooled heat exchanger as a battery cooler and waste heat recovery heat exchanger , improve the heating effect and stability of the system.
It realizes improving the heating effect of the heat pump and air conditioning system in a low temperature environment, avoiding frost from the outside heat exchanger, simplifying the system structure, reducing costs, and improving the operating efficiency and stability of the system.
Smart Images

Figure CN110774862B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of thermal management of new energy vehicles, and in particular, to a heat pump air-conditioning system suitable for new energy vehicles, and in particular to a new energy vehicle heat pump air-conditioning system with a variable-flow external heat exchanger and a vehicle thereof. Background Art
[0002] With the development of automobile technology, the share of electric vehicles in vehicles is getting higher and higher, and the heat pump air conditioning technology of electric vehicles is also increasingly being studied and applied. Many electric vehicles at home and abroad have been equipped with heat pump air conditioning systems. The outdoor heat exchanger is not only used as a condenser but also as an evaporator in the heat pump air conditioning system. It is an important component in the heat pump air conditioning system. Its structural design affects the heat exchange effect and complexity of the system. The insufficient heating capacity of the heat pump air conditioning system under low temperature conditions and the frosting of the outdoor heat exchanger also need to be solved urgently. At present, most electric vehicle heat pump air conditioning systems use outdoor heat exchangers as condensers and evaporators, and the inlet and outlet are inconsistent, which increases the complexity of the system pipeline connection. Therefore, it is necessary to develop a new energy vehicle heat pump air conditioning system in which the outdoor heat exchanger is used as a condenser and an evaporator, the inlet and outlet are consistent, and the heat exchange effect of the outdoor heat exchanger is guaranteed, the number of valves is small, and the system heating effect can be effectively improved in a low temperature environment, and the frosting of the outdoor heat exchanger can be avoided. This not only makes the system structure simple, but also greatly reduces the cost, and improves the efficiency and stability of the system operation, which is conducive to the promotion of heat pump systems in new energy vehicles.
[0003] Patent document CN109695917A discloses an air conditioning system, which includes: an outdoor unit including an outdoor heat exchanger (5); an indoor unit including an indoor heat exchanger 7 connected to the outdoor heat exchanger 5; and an air suspension centrifugal compressor 1 connected to both the outdoor heat exchanger 5 and the indoor heat exchanger 7. This patent cannot be well applied to heat pump air conditioning systems for new energy vehicles. Summary of the invention
[0004] In view of the defects in the prior art, an object of the present invention is to provide a heat pump air-conditioning system suitable for new energy vehicles.
[0005] According to the present invention, a heat pump air conditioning system suitable for new energy vehicles comprises: a compressor component 1, an air conditioning box 2, an in-vehicle condenser component 3, an outdoor heat exchanger 4, a water-cooled heat exchanger 5, an in-vehicle evaporator 6, a gas-liquid separator 7, a blower 8, a first full-pass electronic expansion valve 9, a second full-pass electronic expansion valve 10, a solenoid valve 11, a thermal expansion valve with a cut-off function 12, and a temperature damper 13; the temperature damper 13 is arranged between the in-vehicle condenser component (3) and the in-vehicle evaporator (6) to play an air flow cut-off role; the in-vehicle condenser component 3 and the compressor component 1, the first full-pass electronic expansion valve 9, the second full-pass electronic expansion valve 10, the solenoid valve 11, the thermal expansion valve with a cut-off function 12, and the temperature damper 13. The first full-pass electronic expansion valve 9 is connected to the outdoor heat exchanger 4; the outdoor heat exchanger 4 is connected to the second full-pass electronic expansion valve 10; the second full-pass electronic expansion valve 10 is connected to the water-cooled heat exchanger 5; the outdoor heat exchanger 4 is connected to the thermal expansion valve 12; the thermal expansion valve 12 is connected to the in-vehicle evaporator 6; one end of the gas-liquid separator 7 is connected to the thermal expansion valve 12 and the water-cooled heat exchanger 5; the other end of the gas-liquid separator 7 is connected to the compressor component 1; the blower 8, the temperature damper 13, the in-vehicle condenser component 3, and the in-vehicle evaporator 6 are arranged in the air-conditioning box 2.
[0006] Preferably, it further comprises: a solenoid valve 11 ; the solenoid valve 11 is connected to the first full-pass electronic expansion valve 9 , the in-vehicle condenser component 3 , and the thermal expansion valve 12 respectively.
[0007] Preferably, the thermal expansion valve 12 has a solenoid valve integrated structure.
[0008] Preferably, the off-vehicle heat exchanger 4 includes: a first header 14, an inlet assembly 15, an outlet assembly 16, a second header 21, and a flat tube component 22; the inlet assembly 15 is connected to the first header 14; the outlet assembly 16 is connected to the first header 14; the flat tube component 22 is connected to the first header 14 and the second header 21 respectively; the off-vehicle heat exchanger 4 also includes: a first bellows regulating valve 17, a second bellows regulating valve 19, a first side plate 18 and a second side plate 2 0; the first bellows regulating valve 17 and the first side plate 18 are arranged at one end of the first collecting pipe 14; the second bellows regulating valve 19 and the second side plate 20 are arranged at the other end of the first collecting pipe 14; the first bellows regulating valve 17 can be closed or separated from the first side plate 18; the second bellows regulating valve 19 can be closed or separated from the second side plate 20; the inlet component is adjacent to the second bellows regulating valve 19; the outlet component is adjacent to the first bellows regulating valve 17.
[0009] Preferably, when the first bellows regulating valve 17 and the first side plate 18 are closed, and the second bellows regulating valve 19 and the second side plate 20 are closed, the first collecting pipe 14 is divided into the following three areas: - the first collecting pipe first area; - the first collecting pipe second area; - the first collecting pipe third area; the first collecting pipe first area, the first collecting pipe second area, and the first collecting pipe third area are respectively connected to the flat tube component 22.
[0010] Preferably, the flat tube component 22 includes: an upper side plate, a lower side plate, and a flat tube; the upper side plate and the lower side plate are parallel to the flat tube.
[0011] Preferably, one or more fins 23 are provided on the upper plate and the flat tube, and there is a gap between two adjacent fins 23 .
[0012] Preferably, the first bellows regulating valve 17 and the second bellows regulating valve 19 constitute a bellows regulating valve; the bellows regulating valve comprises: a bellows, a valve stem, and a valve stem sealing ring; the bellows is connected to the valve stem; the valve stem sealing ring is arranged on the top rod of the valve stem.
[0013] Preferably, the off-board heat exchanger 4 adopts any one of the following states: - condenser state; - evaporator state.
[0014] Preferably, the flat tube component 22 further comprises: one or more channels; the channels are arranged along the length direction of the flat tube component (22); and the multiple channels are arranged in parallel.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. The present invention uses a variable-flow external heat exchanger, which has the same inlet and outlet when used as a condenser and an evaporator, has a simple pipeline layout, fewer system valves, and does not affect the heat exchange effect of the system.
[0017] 2. The water-cooled heat exchanger in the present invention can be used as both a battery cooler and a waste heat recovery heat exchanger, thereby reducing the number of water-cooled heat exchangers and simplifying the system structure.
[0018] 3. In the present invention, when the ambient temperature is low and the humidity is high, the external heat exchanger is bypassed, and the internal evaporator and the water-cooled heat exchanger are used as the evaporator. There is no need to worry about the frost on the external heat exchanger, and the heat pump system can work continuously and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:
[0020] Figure 1 It is a structural schematic diagram of the present invention.
[0021] Figure 2 Schematic diagram of the cooling mode implementation scheme in the embodiment of the present invention.
[0022] Figure 3 Schematic diagram of the heating mode implementation scheme in an embodiment of the present invention.
[0023] Figure 4 It is a schematic diagram of the structure of the implementation scheme of the dehumidification and heating mode in an embodiment of the present invention.
[0024] Figure 5 Schematic diagram of the structure of an off-vehicle heat exchanger in an embodiment of the present invention.
[0025] Figure 6 This is a schematic diagram of the structure of an off-vehicle heat exchanger used as a condenser in an embodiment of the present invention.
[0026] Figure 7 Schematic diagram of the structure of an off-vehicle heat exchanger used as an evaporator in an embodiment of the present invention.
[0027] In the figure:
[0028] Compressor component 1 Solenoid valve 11
[0029] Air conditioning box 2 Thermal expansion valve 12
[0030] In-vehicle condenser components 3 Temperature damper 13
[0031] External heat exchanger 4 First header 14
[0032] Water-cooled heat exchanger 5 Imported components 15
[0033] In-vehicle evaporator 6 outlet assembly 16
[0034] Gas-liquid separator 7 Second header 21
[0035] Blower 8 Flat tube parts 22
[0036] First full-pass electronic expansion valve 9 fin 23
[0037] Second full-pass electronic expansion valve 10 DETAILED DESCRIPTION
[0038] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0039] According to the present invention, a heat pump air conditioning system suitable for new energy vehicles comprises: a compressor component 1, an air conditioning box 2, an in-vehicle condenser component 3, an outdoor heat exchanger 4, a water-cooled heat exchanger 5, an in-vehicle evaporator 6, a gas-liquid separator 7, a blower 8, a first full-pass electronic expansion valve 9, a second full-pass electronic expansion valve 10, a solenoid valve 11, a thermal expansion valve with a cut-off function 12, and a temperature damper 13; the temperature damper 13 is arranged between the in-vehicle condenser component (3) and the in-vehicle evaporator (6) to play an air flow cut-off role; the in-vehicle condenser component 3 and the compressor component 1, the first full-pass electronic expansion valve 9, the second full-pass electronic expansion valve 10, the solenoid valve 11, the thermal expansion valve with a cut-off function 12, and the temperature damper 13. The first full-pass electronic expansion valve 9 is connected to the outdoor heat exchanger 4; the outdoor heat exchanger 4 is connected to the second full-pass electronic expansion valve 10; the second full-pass electronic expansion valve 10 is connected to the water-cooled heat exchanger 5; the outdoor heat exchanger 4 is connected to the thermal expansion valve 12; the thermal expansion valve 12 is connected to the in-vehicle evaporator 6; one end of the gas-liquid separator 7 is connected to the thermal expansion valve 12 and the water-cooled heat exchanger 5; the other end of the gas-liquid separator 7 is connected to the compressor component 1; the blower 8, the temperature damper 13, the in-vehicle condenser component 3, and the in-vehicle evaporator 6 are arranged in the air-conditioning box 2.
[0040] Preferably, it further comprises: a solenoid valve 11 ; the solenoid valve 11 is connected to the first full-pass electronic expansion valve 9 , the in-vehicle condenser component 3 , and the thermal expansion valve 12 respectively.
[0041] Preferably, the thermal expansion valve 12 has a solenoid valve integrated structure.
[0042] Preferably, the off-vehicle heat exchanger 4 includes: a first header 14, an inlet assembly 15, an outlet assembly 16, a second header 21, and a flat tube component 22; the inlet assembly 15 is connected to the first header 14; the outlet assembly 16 is connected to the first header 14; the flat tube component 22 is connected to the first header 14 and the second header 21 respectively; the off-vehicle heat exchanger 4 also includes: a first bellows regulating valve 17, a second bellows regulating valve 19, a first side plate 18 and a second side plate 2 0; the first bellows regulating valve 17 and the first side plate 18 are arranged at one end of the first collecting pipe 14; the second bellows regulating valve 19 and the second side plate 20 are arranged at the other end of the first collecting pipe 14; the first bellows regulating valve 17 can be closed or separated from the first side plate 18; the second bellows regulating valve 19 can be closed or separated from the second side plate 20; the inlet component is adjacent to the second bellows regulating valve 19; the outlet component is adjacent to the first bellows regulating valve 17.
[0043] Preferably, when the first bellows regulating valve 17 and the first side plate 18 are closed, and the second bellows regulating valve 19 and the second side plate 20 are closed, the first collecting pipe 14 is divided into the following three areas: - the first collecting pipe first area; - the first collecting pipe second area; - the first collecting pipe third area; the first collecting pipe first area, the first collecting pipe second area, and the first collecting pipe third area are respectively connected to the flat tube component 22.
[0044] Preferably, the flat tube component 22 includes: an upper side plate, a lower side plate, and a flat tube; the upper side plate and the lower side plate are parallel to the flat tube.
[0045] Preferably, one or more fins 23 are provided on the upper plate and the flat tube, and there is a gap between two adjacent fins 23 .
[0046] Preferably, the first bellows regulating valve 17 and the second bellows regulating valve 19 constitute a bellows regulating valve; the bellows regulating valve comprises: a bellows, a valve stem, and a valve stem sealing ring; the bellows is connected to the valve stem; the valve stem sealing ring is arranged on the top rod of the valve stem.
[0047] Preferably, the off-board heat exchanger 4 adopts any one of the following states: - condenser state; - evaporator state.
[0048] Preferably, the flat tube component 22 further comprises: one or more channels; the channels are arranged along the length direction of the flat tube (4); and the multiple channels are arranged in parallel.
[0049] Specifically, in one embodiment, Figure 1 , Figure 2 As shown, in a heat pump air conditioning system, the temperature damper 13 closes the air flow channel of the in-vehicle condenser, and the high-temperature and high-pressure refrigerant gas from the compressor passes through the in-vehicle condenser (at this time, the in-vehicle condenser hardly exchanges heat) and then passes through the first full-pass electronic expansion valve. The expansion valve is fully open and has no throttling function, and the high-temperature and high-pressure refrigerant gas enters the outdoor heat exchanger (at this time, the outdoor heat exchanger serves as a condenser, and the process distribution is that there are more flat tubes in the first process and fewer flat tubes in the second process). After condensation and heat release, one path of the refrigerant passes through the second full-pass electronic expansion valve, and the second full-pass electronic expansion valve throttles and reduces the pressure of the incoming refrigerant and then enters the water-cooled heat exchanger. The water-cooled heat exchanger serves as a battery cooler (the water path is not drawn) to cool the battery; the other path is throttled by a thermal expansion valve with a cut-off function and then enters the in-vehicle evaporator to cool the passenger compartment; the refrigerant gas coming out of the water-cooled heat exchanger and the in-vehicle evaporator passes through a gas-liquid separator and then returns to the compressor.
[0050] like Figure 3As shown, the temperature damper 13 opens the air flow channel of the in-vehicle condenser, and the high-temperature and high-pressure refrigerant gas from the compressor passes through the in-vehicle condenser (at this time, the in-vehicle condenser exchanges heat to heat the passenger compartment) and then passes through the first full-pass electronic expansion valve. The first full-pass electronic expansion valve throttles and reduces the pressure of the refrigerant coming out of the in-vehicle condenser and then enters the outdoor heat exchanger (at this time, the outdoor heat exchanger serves as an evaporator, and the process distribution is that the first process has fewer flat tubes and the second process has more flat tubes). The refrigerant coming out of the outdoor heat exchanger enters the water-cooled heat exchanger after passing through the second full-pass electronic expansion valve. At this time, the thermal expansion valve with a shut-off function is closed, and the second full-pass electronic expansion valve is fully open without throttling. The water-cooled heat exchanger serves as a waste heat recovery heat exchanger to recover heat from electrical appliances such as batteries or motors (the water path is not drawn), and the refrigerant coming out of the water-cooled heat exchanger enters the gas-liquid separator and then returns to the compressor.
[0051] like Figure 4 As shown, the temperature damper 13 opens the air flow channel of the in-vehicle condenser, and the high-temperature and high-pressure refrigerant gas from the compressor passes through the in-vehicle condenser (at this time, the in-vehicle condenser exchanges heat to heat the passenger compartment), the first full-pass electronic expansion valve is closed, the solenoid valve 11 and the thermal expansion valve with a cut-off function are opened, and the refrigerant coming out of the in-vehicle condenser passes through the solenoid valve 11, and then one path is throttled by the thermal expansion valve with a cut-off function and enters the in-vehicle evaporator to dehumidify and cool the incoming air; the other path is throttled by the second full-pass electronic expansion valve and then enters the water-cooled heat exchanger, the water-cooled heat exchanger can absorb the heat of the battery as well as the heat of electrical appliances such as motors, and the water-cooled heat exchanger merges with the refrigerant coming out of the in-vehicle evaporator and returns to the compressor through the gas-liquid separator.
[0052] like Figure 5 , Figure 6 As shown, high-temperature and high-pressure refrigerant gas enters the first manifold from the inlet, and the first manifold includes two bellows regulating valves and two side plates. The high-pressure refrigerant gas pushes open the valve stem of the first bellows regulating valve (the refrigerant pressure is greater than the bellows preload), so that the first side plate channel is opened, and the high-pressure refrigerant gas passes through to the first side plate. The high pressure makes the valve stem of the second bellows regulating valve and the second side plate tightly closed, so that the first flow path is formed between the second side plate and the inlet, and the refrigerant gas passes through the flat tube to reach the second manifold and then passes through the flat tube to reach the outlet, that is, the second flow path.
[0053] like Figure 7 As shown, the low-temperature and low-pressure two-phase refrigerant enters the first header from the inlet. At this time, the valve stem of the first bellows regulating valve is tightly closed with the first side plate (the refrigerant pressure is less than the bellows preload), and the refrigerant cannot pass through. The second side plate and the inlet form a first flow process; the refrigerant reaches the second header through the flat tube. At this time, the valve stem of the second bellows regulating valve is separated from the second side plate, the second side plate channel is opened, and the refrigerant reaches the outlet through the remaining flat tubes.
[0054] The present invention uses a variable-flow external heat exchanger, which has the same input and output when used as a condenser and an evaporator. The pipeline layout is simple, the system valves are relatively few, and the heat exchange effect of the system is not affected. The water-cooled heat exchanger in the present invention can be used as both a battery cooler and a waste heat recovery heat exchanger, which reduces the number of water-cooled heat exchangers and simplifies the system structure. In the present invention, when the ambient temperature is low and the humidity is high, the external heat exchanger is bypassed, and the evaporator in the vehicle and the water-cooled heat exchanger are used as the evaporator. There is no need to worry about the frosting of the external heat exchanger, and the heat pump system can work continuously and efficiently.
[0055] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.
[0056] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0057] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.
Claims
1. A heat pump air conditioning system suitable for new energy vehicles, characterized in that: include: Compressor component (1), air conditioner housing (2), in-vehicle condenser component (3), out-vehicle heat exchanger (4), water-cooled heat exchanger (5), in-vehicle evaporator (6), gas-liquid separator (7), blower (8), first full-pass electronic expansion valve (9), second full-pass electronic expansion valve (10), solenoid valve (11), thermal expansion valve (12), temperature damper (13); The temperature damper (13) is disposed between the in-vehicle condenser component (3) and the in-vehicle evaporator (6); The in-vehicle condenser component (3) is connected to the compressor component (1) and the first full-pass electronic expansion valve (9); The first full-pass electronic expansion valve (9) is connected to the off-vehicle heat exchanger (4); The off-board heat exchanger (4) is connected to a second full-pass electronic expansion valve (10); The second full-pass electronic expansion valve (10) is connected to the water-cooled heat exchanger (5); The off-vehicle heat exchanger (4) is connected to a thermal expansion valve (12); The thermal expansion valve (12) is connected to the in-vehicle evaporator (6); One end of the gas-liquid separator (7) is connected to a thermal expansion valve (12) and a water-cooled heat exchanger (5); The other end of the gas-liquid separator (7) is connected to the compressor component (1); The blower (8), the temperature damper (13), the in-vehicle condenser component (3), and the in-vehicle evaporator (6) are arranged in the air conditioning box (2); The solenoid valve (11) is connected to the first full-pass electronic expansion valve (9), the in-vehicle condenser component (3), and the thermal expansion valve (12) respectively; The off-vehicle heat exchanger (4) comprises: a first header (14), an inlet assembly (15), an outlet assembly (16), a second header (21), and a flat tube component (22); The inlet assembly (15) is connected to the first header (14); The outlet assembly (16) is connected to the first header (14); The flat tube component (22) is connected to the first header (14) and the second header (21) respectively; The off-vehicle heat exchanger (4) further comprises: a first bellows regulating valve (17), a second bellows regulating valve (19), a first side plate (18) and a second side plate (20); The first bellows regulating valve (17) and the first side plate (18) are arranged at one end of the first manifold (14); The second bellows regulating valve (19) and the second side plate (20) are arranged at the other end of the first manifold (14); The first bellows regulating valve (17) can be closed or separated from the first side plate (18); The second bellows regulating valve (19) can be closed or separated from the second side plate (20); The inlet assembly is adjacent to a second bellows regulating valve (19); The outlet assembly is adjacent to the first bellows regulating valve (17).
2. The heat pump air conditioning system suitable for new energy vehicles according to claim 1, characterized in that: The thermal expansion valve (12) has a solenoid valve integrated structure.
3. The heat pump air conditioning system suitable for new energy vehicles according to claim 1, characterized in that: When the first bellows regulating valve (17) and the first side plate (18) are closed, and the second bellows regulating valve (19) and the second side plate (20) are closed, the first header (14) is divided into the following three areas: - a first region of a first header; - a second region of the first header; - the third region of the first header; The first region of the first current collecting pipe, the second region of the first current collecting pipe and the third region of the first current collecting pipe are respectively connected to the flat tube component (22).
4. The heat pump air conditioning system suitable for new energy vehicles according to claim 1, characterized in that: The flat tube component (22) comprises: an upper side plate, a lower side plate, and a flat tube; The upper side plate and the lower side plate are both parallel to the flat tube.
5. The heat pump air conditioning system suitable for new energy vehicles according to claim 4, characterized in that: One or more fins (23) are arranged on the upper plate and the flat tube, and a gap exists between two adjacent fins (23).
6. The heat pump air conditioning system suitable for new energy vehicles according to claim 1, characterized in that: The first bellows regulating valve (17) and the second bellows regulating valve (19) constitute a bellows regulating valve; The bellows regulating valve comprises: a bellows, a valve stem, and a valve stem sealing ring; The bellows is connected to the valve stem; The valve stem sealing ring is arranged on the top rod of the valve stem.
7. The heat pump air conditioning system suitable for new energy vehicles according to claim 1, characterized in that: The off-board heat exchanger (4) adopts any of the following states: -Condenser status; - Evaporator status.
8. The heat pump air conditioning system suitable for new energy vehicles according to claim 4, characterized in that: The flat tube component (22) further includes: one or more holes; The hole is arranged along the length direction of the flat tube component (22); The multiple channels are arranged in parallel.
Citation Information
Patent Citations
Air conditioning system
CN109695917A
Automobile heat pump air conditioning system with multifunctional liquid storage device and operation method of automobile heat pump air conditioning system
CN110303849A
The system is suitable for heat pump air-conditioning systems of new energy vehicles
CN211335510U