Automobile heat pump system and integrated module thereof

Abstract

The invention discloses an automobile heat pump system and a refrigeration integration module thereof. The refrigeration integration module comprises a supporting assembly, a first flow valve, a second flow valve, a liquid storage tank, a battery heat exchanger and a super-cooling plate, the first flow valve, the second flow valve, the liquid storage tank, the battery heat exchanger and the super-cooling plate are installed on the supporting assembly, the battery heat exchanger is fixedly connected with the super-cooling plate, and the super-cooling plate is provided with a heat exchange channel to exchange heat with a refrigerant channel in the battery heat exchanger; the supporting assembly comprises a support and a mounting base, the first flow valve and the second flow valve are connected to the first side face of the mounting base through fasteners, the supercooling plate and the battery heat exchanger are connected to the second side face, opposite to the first side face, of the mounting base through fasteners, and the support is provided with a containing part matched with the liquid storage tank in appearance. The liquid storage tank is contained in the containing part of the support, and the supercooling plate is connected with the support through a fastener. The overall space utilization rate of the automobile can be increased, and the leakage risk caused by too many connecting pipelines is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle heat pump air conditioning systems, and particularly relates to an integrated module for an electric vehicle heat pump air conditioning system. Background Art

[0002] With the booming development of new energy vehicles, in order to further improve the overall vehicle endurance, more and more heat pump air conditioning systems are being used. The refrigerant valves, sensors, and air conditioning pipelines related to the heat pump air conditioning system are relatively complex and have many functions. The main function of the air conditioning pipeline is to connect components such as the evaporator, condenser, compressor, electronic expansion valve, liquid storage tank, and battery cooler, and transport the refrigerant to each main component of the air conditioning system to assist the air conditioning system in realizing functions such as refrigeration, heating, defrosting, and heat exchange of the battery / electronic components. The main function of the refrigerant valve is to throttle and depressurize the system and control the refrigerant flow rate, and the function of the refrigerant sensor is to detect the pressure or temperature at different positions of the system.

[0003] Currently, in the traditional automotive refrigeration system, due to the dispersion of components, a large number of connecting pipelines, large occupied space, and the flow resistance and heat loss of the refrigerant in the pipelines, the heat transfer efficiency of the refrigeration system is low; in addition, there are many interfaces and sealing points between the connecting pipelines, and refrigerant leakage and other problems are likely to occur in these places, resulting in low refrigeration reliability. Summary of the Invention

[0004] For this reason, the present invention proposes a refrigeration integrated module for an electric vehicle heat pump air conditioning system.

[0005] In view of the above technical problems, the present invention provides the following technical solutions:

[0006] A refrigeration integrated module for an automotive heat pump system, comprising: a support assembly, and a first flow valve, a second flow valve, a liquid storage tank, a battery heat exchanger, and a subcooling plate mounted on the support assembly. Among them, the battery heat exchanger is fixedly connected to the subcooling plate, and the subcooling plate is provided with a heat exchange channel to exchange heat with the coolant channel in the battery heat exchanger; the support assembly includes a bracket and a mounting seat. The first flow valve and the second flow valve are connected to the first side surface of the mounting seat through fasteners. The subcooling plate and the battery heat exchanger are connected to the second side surface of the mounting seat opposite to the first side surface through fasteners. The bracket has a receiving portion matching the outer shape of the liquid storage tank, the liquid storage tank is received in the receiving portion of the bracket, and the subcooling plate is connected to the bracket through fasteners.

[0007] In some embodiments of the present invention, a first temperature sensor is further included, and the first temperature sensor is mounted on the liquid inlet interface of the liquid storage tank.

[0008] In some embodiments of the present invention, a second temperature and pressure sensor is further included, and the second temperature and pressure sensor is installed on the pipeline between the liquid outlet interface of the liquid storage tank and the liquid inlet interface of the subcooling plate.

[0009] In some embodiments of the present invention, a third temperature sensor is further included, and the third temperature sensor is installed on the liquid outlet interface of the subcooling plate.

[0010] In some embodiments of the present invention, the accommodating part of the bracket is configured as an openable and closable hoop, which is wrapped around the outer cylindrical surface of the liquid storage tank.

[0011] In some embodiments of the present invention, a first electronic expansion valve is further included, and the first electronic expansion valve is installed at the refrigerant inlet of the battery heat exchanger.

[0012] In some embodiments of the present invention, a coolant inlet and a coolant outlet are provided on the side of the battery heat exchanger away from the subcooling plate.

[0013] In some embodiments of the present invention, the liquid outlet interface of the liquid storage tank and the liquid inlet interface of the subcooling plate are connected through a refrigerant channel provided in the mounting seat.

[0014] The present invention also provides an automotive heat pump system, including a compressor, an in-cabin condenser, an out-of-cabin condenser, a second electronic expansion valve, an evaporator, and the refrigeration integration module described above; wherein, the outlet of the compressor is connected to the inlets of the first flow valve and the second flow valve, the outlet of the first flow valve is connected to the inlet of the out-of-cabin condenser, the outlet of the second flow valve is connected to the inlet of the in-cabin condenser, the two inlets of the liquid storage tank are respectively connected to the outlet of the out-of-cabin condenser and the outlet of the in-cabin condenser, and the outlet of the subcooling plate is connected to the second electronic expansion valve.

[0015] In some embodiments of the present invention, the refrigeration integration module is installed in the front cabin of the vehicle.

[0016] The technical solution of the present invention has the following technical effects compared with the prior art:

[0017] In the automotive heat pump system and its refrigeration integration module provided by the present invention, a compact module structure is formed by integrating multiple key refrigeration components. This enables the vehicle to reasonably arrange more functional components within a limited space, improving the utilization efficiency of the overall vehicle space. Components such as the first flow valve, the second flow valve, the liquid storage tank, the battery heat exchanger, and the subcooling plate are fixedly connected through the mounting seats and brackets of the support assembly. Compared with the traditional decentralized installation method, the leakage risk caused by excessive connecting pipelines between components is reduced. The setting of the subcooling plate and the battery heat exchanger can perform secondary cooling on the liquid refrigerant flowing out of the liquid storage tank, enhancing the subcooling degree of the refrigerant and effectively increasing the latent heat capacity of the refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the drawings, which will help to understand the objectives and advantages of the present invention, wherein:

[0019] Figure 1 is a schematic structural diagram of a specific embodiment of the refrigeration integration module of the automotive heat pump system of the present invention;

[0020] Figure 2 is an exploded view of a specific embodiment of the refrigeration integration module of the automotive heat pump system of the present invention;

[0021] Figure 3 is a top view of a specific embodiment of the refrigeration integration module of the automotive heat pump system of the present invention;

[0022] Figure 4 is a schematic structural diagram of a specific embodiment of the refrigeration integration module of the automotive heat pump system of the present invention;

[0023] Figure 5 is Figure 3 a sectional view taken along line E-E of

[0024] Figure 6 is a schematic structural diagram of a specific embodiment of the refrigeration integration module of the automotive heat pump system of the present invention;

[0025] Figure 7 is a system schematic diagram of a specific embodiment of the automotive heat pump system of the present invention;

[0026] Figure 8 is a connection relationship diagram of the refrigeration integration module and other refrigeration components in the automotive heat pump system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] As Figures 1-6 shown is a specific embodiment of the refrigeration integration module (hereinafter referred to as the refrigeration integration module) of the automotive heat pump system provided by the present invention. The refrigeration integration module includes a support assembly and a first flow valve 1, a second flow valve 2, a liquid storage tank 3, a battery heat exchanger 4, and a subcooling plate 5 installed on the support assembly. Among them, the battery heat exchanger 4 is fixedly connected to the subcooling plate 5, and the subcooling plate 5 is provided with a heat exchange channel to exchange heat with the coolant channel in the battery heat exchanger 4; the support assembly includes a bracket 6 and a mounting seat 7. The first flow valve 1 and the second flow valve 2 are connected to the first side surface of the mounting seat 7 through fasteners. The subcooling plate 5 and the battery heat exchanger 4 are connected to the second side surface of the mounting seat 7 opposite to the first side surface through fasteners. The bracket 6 has a receiving portion 61 matching the outer shape of the liquid storage tank 3. The liquid storage tank 3 is received in the receiving portion 61 of the bracket 6, and the subcooling plate 5 is connected to the bracket 6 through fasteners.

[0032] The above-mentioned refrigeration integrated module forms a compact module structure by integrating multiple key refrigeration components, such as a first flow valve 1, a second flow valve 2, a liquid storage tank 3, a battery heat exchanger 4, and a subcooling plate 5. The bracket 6 of the support assembly and the mounting seat 7 rationally plan the installation positions of the components. For example, the first flow valve 1 and the second flow valve 2 are installed on the first side of the mounting seat 7, the subcooling plate 5 and the battery heat exchanger 4 are installed on the opposite second side, and the liquid storage tank 3 is accommodated in a specific accommodating portion 61 of the bracket 6. This layout greatly saves the space in the front engine compartment of the vehicle, enabling the vehicle to reasonably arrange more functional components in a limited space and improving the utilization efficiency of the overall vehicle space.

[0033] Meanwhile, the refrigeration integrated module reduces the number of pipelines and interfaces for independent connection between components. For example, components such as the first flow valve 1, the second flow valve 2, the liquid storage tank 3, the battery heat exchanger 4, and the subcooling plate 5 are fixedly connected through the mounting seat 7 and the bracket 6 of the support assembly. Compared with the traditional decentralized installation method, the leakage risk caused by excessive connection pipelines between components is reduced. Fewer connection points mean that during the operation of the system, the number of leakage points is significantly reduced, improving the sealing performance and reliability of the system.

[0034] In addition, when a fault occurs in the heat pump system, since the refrigeration integrated module adopts a modular design, the entire module can be disassembled from the front engine compartment of the vehicle for repair or replacement. Compared with the traditional decentralized system, it is not necessary to check and disassemble each individual component one by one, greatly shortening the repair time.

[0035] Specifically, the battery heat exchanger 4 is used to realize heat exchange between the refrigerant channel and the coolant channel. Wherein, a coolant inlet 41 and a coolant outlet 42 are provided on one side of the battery heat exchanger 4 away from the subcooling plate 5. The heat generated by the battery pack is transferred to the battery heat exchanger 4 through the coolant. Inside the battery heat exchanger 4, the coolant exchanges heat with the refrigerant, and the refrigerant absorbs the heat of the coolant, thereby reducing the temperature of the coolant and achieving the purpose of cooling the battery pack. At the same time, the coolant channel of the battery heat exchanger 4 exchanges heat with the refrigerant channel flowing through the subcooling plate 5, which can increase the subcooling degree of the refrigerant and effectively increase the latent heat capacity of the refrigerant.

[0036] Specifically, as Figure 2 、 Figure 5 shown, the refrigeration integrated module further includes a first electronic expansion valve 11, and the first electronic expansion valve 11 is installed at the refrigerant inlet of the battery heat exchanger 4.

[0037] Specifically, in an optional implementation manner, as Figure 3As shown, two mounting cavities are provided on the upper surface of the mounting base 7. The first flow valve 1 and the second flow valve 2 are arranged in the mounting cavities and fixedly connected to the mounting base 7 through a plurality of fasteners A. The battery heat exchanger 4 and the subcooling plate 5 are integrally welded, and the side of the subcooling plate 5 is fixedly connected to the mounting base 7 through two fastening screws A (see Figure 4 ). The upper side of the liquid storage tank 3 is connected to the mounting base 7 through a fastening screw A (see Figure 4 ), so that the mounting base 7 can be indirectly connected to the bracket 6, which can greatly improve the support reliability of the support assembly.

[0038] Specifically, as shown in Figure 5 , the refrigerant in the liquid storage tank 3 is communicated with the refrigerant channel 51 in the subcooling plate 5 through the refrigerant channel provided in the mounting base 7. By providing the refrigerant channel in the mounting base 7, the number of external pipelines of the refrigeration integration module is further reduced, and each component is reasonably utilized, further reducing the leakage risk of the connecting pipeline.

[0039] The refrigeration integration module further includes a first temperature sensor 8 and a second temperature and pressure sensor 10. The first temperature sensor 8 is installed on the liquid inlet interface of the liquid storage tank 3. The second temperature and pressure sensor 10 is installed on the pipeline between the liquid storage tank 3 and the subcooling plate 5. The first temperature sensor 8 and the second temperature and pressure sensor 10 can monitor the temperature and pressure changes of the liquid inlet and outlet of the liquid storage tank 3 in real time, and timely detect possible leakage problems, further ensuring the safe operation of the system. More specifically, as shown in Figure 5 , an interface communicating with the liquid inlet interface of the subcooling plate 5 is provided on the side of the mounting base 7, and the second temperature and pressure sensor 10 is installed on the interface of the mounting base 7 for easy replacement and maintenance of the second temperature and pressure sensor 10.

[0040] Specifically, in an optional implementation manner, as shown in Figure 2 、 Figure 6 , the refrigeration integration module further includes a third temperature sensor 9, and the third temperature sensor 9 is installed on the liquid outlet of the subcooling plate 5 to measure the temperature of the refrigerant passing through the subcooling plate 5.

[0041] Specifically, in an optional implementation manner, the accommodating part 61 of the bracket 6 is constructed in the form of an openable and closable hoop, which is wrapped around the outer cylindrical surface of the liquid storage tank 3. This design can facilitate the opening of the hoop for operation when installing and maintaining the liquid storage tank 3, and then closing the hoop after installation to ensure the stable installation of the liquid storage tank 3. At the same time, the hoop structure is more conformable to the outer shape of the liquid storage tank 3 in terms of space utilization, reducing unnecessary space occupation compared with the traditional open bracket, and further optimizing the overall space layout.

[0042] The present invention also provides a specific implementation manner of an automotive heat pump system, such as Figure 7 , Figure 8 shown, which includes a compressor 12, an in-cabin condenser 13, an out-of-cabin condenser 14, a second electronic expansion valve 15, an evaporator 16, and the above-mentioned refrigeration integration module; wherein, the outlet of the compressor 12 is communicated with the inlets of the first flow valve 1 and the second flow valve 2, the outlet of the first flow valve 1 is communicated with the inlet of the out-of-cabin condenser 14, the outlet of the second flow valve 2 is communicated with the inlet of the in-cabin condenser 13, the two inlets of the liquid storage tank 3 are respectively communicated with the outlet of the out-of-cabin condenser 14 and the outlet of the in-cabin condenser 13, the outlet of the liquid storage tank 3 is communicated with the inlet of the subcooling plate 5, and the outlet of the subcooling plate 5 is communicated with the second electronic expansion valve 15.

[0043] In this heat pump system, the liquid refrigerant flowing out of the liquid storage tank 3 can be secondarily cooled through the heat exchange between the subcooling plate 5 and the battery heat exchanger 4, improving the subcooling degree of the refrigerant and effectively increasing the latent heat capacity of the refrigerant. For example, in the passenger cabin refrigeration mode, the subcooling plate 5 secondarily cools the liquid refrigerant flowing out of the liquid storage tank 3, and the subcooling degree is increased by 5-8°C, effectively increasing the latent heat capacity of the refrigerant, enabling the refrigerant to absorb more heat in the passenger cabin in the evaporator 16, thereby achieving a more efficient refrigeration effect; in the passenger cabin heating mode and the battery pack cooling mode, the liquid refrigerant is also secondarily cooled to increase the latent heat capacity of the refrigerant, providing a better basis for subsequent heat exchange, and being able to improve the heating efficiency by 15-20% in the heating mode and better realizing the cooling of the battery pack in the battery pack cooling mode.

[0044] Specifically, the refrigeration integration module is installed in the front cabin of the vehicle through a support assembly, and the bracket 6 and the mounting seat 7 of the support assembly provide a stable installation basis for each component. The accommodating portion 61 of the bracket 6 tightly wraps the liquid storage tank 3, and the subcooling plate 5 is connected to the bracket 6 through fasteners, making the entire module form a stable overall structure. During the driving of the vehicle, in the face of vibrations generated by various road conditions, the support assembly can effectively absorb and disperse the vibration energy, reduce the influence of vibrations on each component, prevent the components from loosening and being damaged due to vibrations, and improve the anti-vibration performance of the entire system.

[0045] The above heat pump system can be switched between the passenger cabin refrigeration mode, the passenger cabin heating mode, the dehumidification mode, the battery pack cooling mode, and the passenger cabin refrigeration and battery pack cooling mode.

[0046] Among them, the working principle of the passenger cabin refrigeration mode is as follows:

[0047] The high-temperature and high-pressure refrigerant compressed by the compressor 12 enters the external condenser 14 through the first flow valve 1, and undergoes forced convection heat exchange with the outside air in the external condenser 14. The temperature of the refrigerant drops to 45 - 55 °C (still maintaining high-pressure liquid state). The liquid refrigerant enters the liquid storage tank 3 for gas-liquid separation and impurity filtration. The sub-cooling plate 5 performs secondary cooling on the liquid refrigerant (the sub-cooling degree is increased by 5 - 8 °C), effectively increasing the latent heat capacity of the refrigerant. Then, it passes through the second electronic expansion valve 15 to throttle and reduce the pressure to 0.3 - 0.5 MPa, forming a low-temperature and low-pressure gas-liquid mixed refrigerant that enters the evaporator 16. The refrigerant absorbs the heat of the air in the passenger compartment and completely vaporizes (the temperature drops to 5 - 10 °C) and then flows into the compressor 12. In this working mode, the refrigerant absorbs the heat generated in the passenger compartment in the evaporator 16 to achieve the refrigeration of the passenger compartment.

[0048] The working principle of the passenger compartment heating mode is as follows:

[0049] The high-temperature and high-pressure refrigerant compressed by the compressor 12 enters the internal condenser 13 through the second flow valve 2. The internal condenser 13 is used reversely as an evaporator. The high-temperature refrigerant releases sensible heat to the air in the passenger compartment, and the refrigerant condenses into high-pressure liquid (the temperature drops to 50 - 60 °C) during this process. The liquid refrigerant enters the liquid storage tank 3 for gas-liquid separation and impurity filtration. The sub-cooling plate 5 performs secondary cooling on the liquid refrigerant, effectively increasing the latent heat capacity of the refrigerant. Then, it forms a low-temperature and low-pressure gas-liquid mixed refrigerant through the first electronic expansion valve 11 and enters the battery heat exchanger 4. The coolant circuit of the battery pack exchanges heat with the refrigerant to recover the waste heat of the battery system (the heating efficiency is increased by 15 - 20%). The refrigerant flows into the compressor 12 after passing through the battery heat exchanger 4.

[0050] The working principle of the battery pack cooling mode is as follows:

[0051] The high-temperature and high-pressure refrigerant compressed by the compressor 12 enters the external condenser 14 through the first flow valve 1, and undergoes forced convection heat exchange with the outside air in the external condenser 14 to form liquid refrigerant. The liquid refrigerant enters the liquid storage tank 3 for gas-liquid separation and impurity filtration. The sub-cooling plate 5 performs secondary cooling on the liquid refrigerant, effectively increasing the latent heat capacity of the refrigerant. Then, it forms a low-temperature and low-pressure gas-liquid mixed refrigerant through the first electronic expansion valve 11 and enters the battery heat exchanger 4. The coolant circuit of the battery pack exchanges heat with the refrigerant, and the refrigerant vaporized after passing through the battery heat exchanger 4 flows into the compressor 12. In this working mode, the refrigerant absorbs the heat generated by the battery pack brought by the coolant in the battery heat exchanger to achieve the refrigeration of the battery pack.

[0052] The working principle of the passenger compartment refrigeration and battery cooling mode is as follows:

[0053] The refrigerant flow in this mode is as follows: Compressor 12 → First flow valve 1 → Outdoor condenser 14 → Liquid storage tank 3 → Subcooling plate 5. After the subcooling plate 5, the refrigerant is divided into two paths: one path passes through the second electronic expansion valve 15 → Evaporator 16 → Compressor 12; the other path passes through the first electronic expansion valve 11 → Battery heat exchanger 4 → Compressor 12. In this operating mode, one path of the refrigerant absorbs the heat generated by the battery pack brought by the coolant in the battery heat exchanger to achieve battery pack refrigeration, and the other path of the refrigerant absorbs the heat generated in the passenger compartment in the evaporator 16 to achieve passenger compartment refrigeration.

[0054] The working principle of the dehumidification mode is as follows:

[0055] The refrigerant flow in this mode is as follows: The outlet of the compressor 12 is divided into two paths: one path passes through the first flow valve 1 → Outdoor condenser 14 → Liquid storage tank 3; the other path passes through the second flow valve 2 → Indoor condenser 13 → Liquid storage tank 3; the refrigerant aggregated through the liquid storage tank 3 is divided into two paths after passing through the subcooling plate 5: one path passes through the second electronic expansion valve 15 → Evaporator 16 → Compressor 12, and the other path passes through the first electronic expansion valve 11 → Battery heat exchanger 4 → Compressor 12. This mode uses the indoor condenser 13 to achieve sensible heat dehumidification and the evaporator 16 to achieve latent heat dehumidification to form a dual dehumidification mechanism. Specifically, the flow ratio of the two condensers can be controlled by the detection signal of the indoor humidity sensor to improve the dehumidification efficiency. For example, when it is detected that the indoor humidity is too high, such as when there is a risk of glass fogging, the flow rate on the side of the indoor condenser 13 is automatically increased to 40%-50% to achieve the purpose of rapid dehumidification.

[0056] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A refrigeration integrated module for an automobile heat pump system, characterized in that: include: A support assembly and a first flow valve, a second flow valve, a liquid storage tank, a battery heat exchanger and a supercooling plate installed on the support assembly, wherein the battery heat exchanger is fixedly connected to the supercooling plate, and the supercooling plate is provided with a heat exchange channel to exchange heat with a coolant channel in the battery heat exchanger; The support assembly includes a bracket and a mounting seat, the first flow valve and the second flow valve are connected to a first side surface of the mounting seat by fasteners, the supercooling plate and the battery heat exchanger are connected to a second side surface of the mounting seat opposite to the first side surface by fasteners, the bracket has a receiving portion matching the shape of the liquid storage tank, the liquid storage tank is received in the receiving portion of the bracket, and the supercooling plate is connected to the bracket by fasteners.

2. The refrigeration integrated module of the automotive heat pump system according to claim 1, characterized in that: It also includes a first temperature sensor, which is installed on the liquid inlet interface of the liquid storage tank.

3. A refrigeration integrated module for an automotive heat pump system according to claim 1 or 2, characterized in that: It also includes a second temperature and pressure sensor, which is installed on the pipeline between the liquid outlet interface of the liquid storage tank and the liquid inlet interface of the supercooling plate.

4. The refrigeration integrated module of the automotive heat pump system according to claim 3, characterized in that: It also includes a third temperature sensor, which is installed on the liquid outlet interface of the supercooling plate.

5. The refrigeration integrated module of the automotive heat pump system according to claim 1, characterized in that: The accommodating portion of the bracket is constructed as an openable and closable sleeve, which is covered on the outer cylinder surface of the liquid storage tank.

6. The refrigeration integrated module of the automotive heat pump system according to claim 1, characterized in that: The invention also includes a first electronic expansion valve installed at a refrigerant inlet of the battery heat exchanger.

7. The refrigeration integrated module of the automotive heat pump system according to claim 1, characterized in that: A coolant inlet and a coolant outlet are provided on a side of the battery heat exchanger away from the supercooling plate.

8. The refrigeration integrated module of the automotive heat pump system according to claim 1, characterized in that: The liquid outlet interface of the liquid storage tank is communicated with the liquid inlet interface of the supercooling plate through a refrigerant channel arranged in the mounting seat.

9. An automobile heat pump system, characterized in that: It includes a compressor, an in-cabin condenser, an out-cabin condenser, a second electronic expansion valve, an evaporator and a refrigeration integrated module as described in any one of claims 1 to 8; wherein the outlet of the compressor is connected to the inlets of the first flow valve and the second flow valve, the outlet of the first flow valve is connected to the inlet of the out-cabin condenser, the outlet of the second flow valve is connected to the inlet of the in-cabin condenser, the two inlets of the liquid storage tank are connected to the outlet of the out-cabin condenser and the outlet of the in-cabin condenser respectively, and the outlet of the subcooling plate is connected to the second electronic expansion valve.

10. The automotive heat pump system according to claim 9, characterized in that: The refrigeration integrated module is installed in the front cabin of the car.

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