Valve group integration module, vehicle thermal management system and vehicle

Abstract

The present disclosure relates to a valve group integrated module, a vehicle thermal management system, and a vehicle, the module comprising a base and a valve group provided on the base, the valve group comprising a first on-off valve, a second on-off valve, and a first expansion valve, the base is formed with an indoor condenser outlet interface for connecting to an outlet of an indoor condenser outside the base, an outdoor heat exchanger outlet interface for connecting to an outlet of an outdoor heat exchanger outside the base, and a battery pack heat exchanger inlet interface for connecting to a refrigerant inlet of a battery pack heat exchanger outside the base, a first flow path is formed within the base, the inlet of the first on-off valve is connected to the indoor condenser outlet interface, the outlet of the first on-off valve is connected to the first flow path, the inlet of the first expansion valve is connected to the first flow path, the outlet of the first expansion valve is connected to the battery pack heat exchanger inlet interface, the outdoor heat exchanger outlet interface is connected to the inlet of the second on-off valve, and the outlet of the second on-off valve is connected to the first flow path.

Description

[Technical field]

[0001] The present disclosure is in the field of vehicle technology, and more particularly, to a valve group integration module, a vehicle thermal management system, and a vehicle. [Background technology]

[0002] Vehicle thermal management systems are important components of vehicles, and can play a role in changing the temperature environment in the passenger compartment, thereby improving the driving experience of the driver and the riding experience of the passengers. In the prior art, since the vehicle thermal management system has different operating modes and the refrigerant has different flow paths in different operating modes, it is usually necessary to install multiple valve members (such as expansion valves, on-off valves, etc.), and the multiple valve members are connected to corresponding devices through piping. In some vehicle thermal management systems, multiple valve members may need to be connected to the same device, which requires multiple pipes and joints, increasing the number of pipes and the number of joints. In addition, the valve members are distributed randomly, which makes the piping arrangement easy to become messy, and makes installation and later maintenance difficult. Summary of the Invention [Problem to be solved by the invention]

[0003] An object of the present disclosure is to provide a valve group integrated module, a vehicle thermal management system, and a vehicle that can reduce the complexity of piping layout in a vehicle thermal management system and reduce space occupation rate. [Means for solving the problem]

[0004] In order to achieve the above object, according to one aspect of the present disclosure, the present disclosure provides a valve group integrated module, comprising: a base; and a valve group provided on the base, the valve group comprising a first on-off valve, a second on-off valve, and a first expansion valve; The substrate is provided with an indoor condenser outlet interface for connecting to an outlet of an indoor condenser outside the substrate, an outdoor heat exchanger outlet interface for connecting to an outlet of an outdoor heat exchanger outside the substrate, and a battery pack heat exchanger inlet interface for connecting to a refrigerant inlet of a battery pack heat exchanger outside the substrate; A first flow path is formed in the base, an inlet of the first on-off valve is connected to the indoor condenser outlet interface, an outlet of the first on-off valve is connected to the first flow path, an inlet of the first expansion valve is connected to the first flow path, an outlet of the first expansion valve is connected to the battery pack heat exchanger inlet interface, the outdoor heat exchanger outlet interface is connected to the inlet of the second on-off valve, and an outlet of the second on-off valve is connected to the first flow path.

[0005] Optionally, the valve group further includes a second expansion valve, and the base is further formed with an indoor evaporator inlet interface for connecting to an inlet of an indoor evaporator outside the base, the inlet of the second expansion valve being connected to the first flow path, and the outlet of the second expansion valve being connected to the indoor evaporator inlet interface.

[0006] Optionally, the valve group further includes a third on-off valve, and the base is further formed with an outdoor heat exchanger inlet interface for connecting to an inlet of the outdoor heat exchanger, and a second flow path is further formed within the base, the indoor condenser outlet interface is connected to the second flow path, the inlet of the first on-off valve is connected to the second flow path, the inlet of the third on-off valve is connected to the second flow path, and the outlet of the third on-off valve is connected to the outdoor heat exchanger inlet interface.

[0007] Selectably, by turning on or off the first on-off valve and turning on or off the third on-off valve, the refrigerant flowing from the indoor condenser outlet interface to the second flow path can be made to flow into the first flow path via the first on-off valve, or to flow out from the outdoor heat exchanger inlet interface via the third on-off valve.

[0008] Optionally, the valve group further includes a third expansion valve, and a third flow path is further formed in the base, the outdoor heat exchanger inlet interface is connected to the third flow path, the outlet of the third on-off valve is connected to the third flow path, the inlet of the third expansion valve is connected to the second flow path, and the outlet of the third expansion valve is connected to the third flow path.

[0009] Selectably, by conducting or blocking the third on-off valve and throttling or blocking the third expansion valve, the refrigerant flowing from the indoor condenser outlet interface into the second flow path can be made to flow into the third flow path via the third on-off valve or into the third flow path via the third expansion valve.

[0010] Optionally, the base body comprises a first part and a second part, the first part including a first connecting surface and the second part including a second connecting surface, the first connecting surface being sealingly connected to the second connecting surface, the first connecting surface recessed inwardly to form a first groove, a second groove and a third groove, the second connecting surface and the first groove together defining the first flow path, the second connecting surface and the second groove together defining the second flow path, and the second connecting surface and the third groove together defining the third flow path; The first on-off valve, the second on-off valve, the third on-off valve, the first expansion valve, and the third expansion valve are all provided in the first separate body, or the first on-off valve, the second on-off valve, the third on-off valve, the first expansion valve, and the third expansion valve are all provided in the second separate body.

[0011] Optionally, at least one of the first groove, the second groove and the third groove is a curved groove.

[0012] Optionally, the valve group further includes a fourth on-off valve, and a reflux inlet interface is further formed in the base for connecting to an inlet of a compressor outside the base or an inlet of a gas-liquid separator connected to the compressor, a fourth flow path is further formed in the base, the outdoor heat exchanger outlet interface is connected to the fourth flow path, the inlet of the second on-off valve is connected to the fourth flow path, the inlet of the fourth on-off valve is connected to the fourth flow path, and the outlet of the fourth on-off valve is connected to the reflux inlet interface.

[0013] Optionally, a fifth flow path is further formed in the base, the outlet of the fourth on-off valve is connected to the fifth flow path, the reflux inlet interface is connected to the fifth flow path, and a battery pack heat exchanger outlet interface is further formed in the base for connecting to a refrigerant outlet of a battery pack heat exchanger, and the battery pack heat exchanger outlet interface is connected to the fifth flow path.

[0014] Optionally, a fifth flow passage is further formed in the base, the outlet of the fourth on-off valve is connected to the fifth flow passage, the reflux inlet interface is connected to the fifth flow passage, and an indoor evaporator outlet interface is further formed in the base for connecting to an outlet of an indoor evaporator, and the indoor evaporator outlet interface is connected to the fifth flow passage.

[0015] Optionally, the valve group integration module further comprises a temperature sensor, wherein a first through-hole, a second through-hole and a third through-hole are formed in the fifth flow path, the second through-hole is located between the first through-hole and the third through-hole, the first through-hole is connected to the indoor evaporator outlet interface, and the third through-hole is connected to the return inlet interface, the temperature sensor is provided on the base, and a detection end of the temperature sensor is located in the fifth flow path through the second through-hole.

[0016] Optionally, the base body comprises a first member and a second member, the first member including a first connecting surface and the second member including a second connecting surface, the first connecting surface being sealingly connected to the second connecting surface, the first connecting surface recessed inwardly to form a fourth groove and a fifth groove, the second connecting surface and the fourth groove together defining the fourth flow passage, and the second connecting surface and the fifth groove together defining the fifth flow passage; The fourth on-off valve is provided in the first separate body or the second separate body.

[0017] Optionally, at least one of the fourth groove and the fifth groove is a curved groove.

[0018] According to another aspect of the present disclosure, there is provided a vehicle thermal management system including the valve group integration module described above.

[0019] According to a further aspect of the present disclosure, there is provided a vehicle including the vehicle thermal management system described above.

[0020] According to the above technical solution, the first on-off valve, the second on-off valve and the first expansion valve are all integrated into the base and connected to the first flow path formed in the base, so there is no need to connect the inlet of the first expansion valve to the outlet of the first on-off valve and the outlet of the second on-off valve respectively through multiple different pipes; that is, in the present disclosure, the first flow path formed in the base can replace multiple external pipes of the inlet of the first expansion valve for connecting the outlet of the first on-off valve and the outlet of the second on-off valve, thereby reducing the number of pipes and joints between the first on-off valve and the second on-off valve and the first expansion valve, and reducing the complexity of the piping arrangement.

[0021] In addition, the base is formed with an indoor condenser outlet interface, an outdoor heat exchanger outlet interface, and a battery pack heat exchanger inlet interface. The first on-off valve provided on the base is connected between the indoor condenser outlet interface and the first flow path, the second on-off valve is connected between the outdoor heat exchanger outlet interface and the first flow path, and the first expansion valve is connected between the first flow path and the battery pack heat exchanger inlet interface. During assembly, the outlet of the indoor condenser is connected to the indoor condenser outlet interface through a pipe, the outlet of the outdoor heat exchanger is connected to the outdoor heat exchanger outlet interface through a pipe, and the refrigerant inlet of the battery pack heat exchanger is connected to the battery pack heat exchanger inlet interface through a pipe, thereby realizing the connection between the indoor condenser, the outdoor heat exchanger, and the battery pack heat exchanger. There is no need for multiple connecting pipes to be complicatedly assembled between the first on-off valve, the second on-off valve, and the first expansion valve group and the indoor condenser, the outdoor heat exchanger, and the battery pack heat exchanger, and the assembly process is simple and convenient. In addition, the first expansion valve, the first on-off valve and the second on-off valve are all mounted on the base and form a modular form with the base, which solves problems such as high space occupancy and inconvenience in assembly and maintenance due to the first expansion valve, the first on-off valve and the second on-off valve being distributed separately inside the vehicle.

[0022] Other features and advantages of the present disclosure are described in detail in the detailed description that follows. [Brief description of the drawings]

[0023] The drawings are provided for a further understanding of the present disclosure, constitute a part of the specification, and are used to interpret the present disclosure together with the following detailed description, but are not intended to limit the disclosure. [Figure 1] FIG. 1 is a perspective view of a valve group integration module according to an exemplary embodiment of the present disclosure. [Diagram 2] FIG. 1 is an exploded view of a valve group integration module according to an exemplary embodiment of the present disclosure. [Diagram 3]FIG. 2 is a perspective view of a first separate body of a valve group integration module according to an exemplary embodiment of the present disclosure. [Figure 4] FIG. 4 is a perspective view (at a different angle than FIG. 3) of a first separate part of a base of a valve group integration module according to an exemplary embodiment of the present disclosure. [Diagram 5] FIG. 2 is a front view of a first separate portion of a base of a valve group integration module according to an exemplary embodiment of the present disclosure. [Figure 6] 1 is a flow path schematic of a vehicle thermal management system according to an exemplary embodiment of the present disclosure. [Figure 7] 1 is a flow path schematic of a vehicle thermal management system according to an exemplary embodiment of the present disclosure, also showing the valves integrated into the valve group integration module and the interfaces on the valve group integration module. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the drawings. It should be understood that the specific embodiments described herein are merely for the purpose of explaining and interpreting the present disclosure, and are not intended to limit the present disclosure.

[0025] In the present disclosure, unless otherwise stated, the terms "first" and "second" are for distinguishing and describing, and are not to be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, it is necessary to further explain that, unless otherwise clearly specified and limited, the terms "install", "connect", and "mount" appearing may be, for example, fixedly connected, detachably connected or integrally connected, directly connected, or indirectly connected, and "connected" may be a direct or indirect connection between two elements, and should be understood in a broad sense, and the parties concerned may understand the specific meaning of the above terms in the present disclosure according to the specific circumstances.

[0026] In the case of a hybrid vehicle or a pure electric vehicle, a battery pack 97 is installed in the hybrid vehicle or the pure electric vehicle, and in order to ensure that the battery pack 97 is within a suitable operating temperature range, when the temperature of the battery pack 97 is too high, the battery pack 97 needs to be cooled. As shown in FIG. 6, in order to realize the cooling of the battery pack 97 by using the cold heat of the refrigerant, a battery pack heat exchanger 96 connected in series to the battery pack 97 is installed in the vehicle thermal management system according to the present disclosure, and when the battery pack 97 is individually cooled, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor 91 dissipates heat to the outside air in the exterior heat exchanger 93, and then flows into the battery pack heat exchanger 96 after being throttled and reduced in pressure by the first expansion valve 21, in the battery pack heat exchanger 96, the low-temperature and low-pressure refrigerant absorbs the heat of the high-temperature coolant, so that the low-temperature coolant flows out from the coolant outlet of the battery pack heat exchanger 96, and the low-temperature cooling absorbs the heat of the battery pack 97 when flowing through the battery pack 97, thereby realizing the cooling and temperature reduction of the battery pack 97.

[0027] 6, in contrast to the conventional passenger compartment heating mode, the high-temperature, high-pressure refrigerant flowing out from the outlet of the compressor 91 dissipates heat to the passenger compartment in the interior condenser 92, raising the temperature of the passenger compartment, and the refrigerant after dissipating heat that flows out from the outlet of the interior condenser 92 absorbs heat from the outside air in the exterior heat exchanger 93 and then returns to the compressor 91. However, if the temperature of the external environment is not significantly different from the temperature of the refrigerant in the exterior heat exchanger 93, the refrigerant is limited in absorbing heat in the exterior heat exchanger 93, which affects the heating capacity of the passenger compartment. In contrast, since the battery pack 97 generates heat when it is operated, the vehicle thermal management system according to the present disclosure further has a passenger compartment heating mode that utilizes the heat of the battery pack 97. Specifically, as shown in FIG. 6, the refrigerant flowing out from the outlet of the interior condenser 92 does not flow into the exterior heat exchanger 93, but instead flows into the battery pack heat exchanger 96 after being throttled down and reduced in pressure by the first expansion valve 21. The heat of the high-temperature coolant is absorbed in the battery pack heat exchanger 96, and the heat generated by the battery pack 97 is transported to the air conditioning system and used to heat the passenger compartment.

[0028] In different operating modes of the vehicle thermal management system, it is necessary to control the conductivity between the inlet of the first expansion valve 21 and different devices. For example, in the independent cooling mode of the battery pack 97, the inlet of the first expansion valve 21 needs to be connected to the outlet of the exterior heat exchanger 93, and in the passenger compartment heating mode that utilizes the heat of the battery pack 97, the inlet of the first expansion valve 21 needs to be connected to the outlet of the interior condenser 92. Therefore, it is necessary to install a first on-off valve 11 between the outlet of the interior condenser 92 and the inlet of the first expansion valve 21, and a second on-off valve 12 needs to be installed between the outlet of the exterior heat exchanger 93 and the inlet of the first expansion valve 21. However, this increases the number of pipes and joints in the vehicle thermal management system, making the piping arrangement very complicated, and these valves are distributed randomly in the piping, making them unsuitable for installation.

[0029] Therefore, in order to reduce the complexity of the piping arrangement of the vehicle thermal management system and to reduce the number of pipes and joints, according to one embodiment of the present disclosure, as shown in Figures 1 to 7, a valve group integrated module is provided, which includes a base 60 and a valve group provided on the base 60, and the valve group includes a first on-off valve 11, a second on-off valve 12, and a first expansion valve 21. As shown in Figures 3 and 4, the base 60 is formed with an indoor condenser outlet interface 67 for connecting to an outlet of an indoor condenser 92 outside the base 60, an outdoor heat exchanger outlet interface 64 for connecting to an outlet of an outdoor heat exchanger 93 outside the base 60, and a battery pack heat exchanger inlet interface 68 for connecting to a refrigerant inlet of a battery pack heat exchanger 96 outside the base 60. As shown in Figures 3 to 5, a first flow path 101 is formed in the base 60, the inlet of the first on-off valve 11 is connected to the indoor condenser outlet interface 67, the outlet of the first on-off valve 11 is connected to the first flow path 101, the inlet of the first expansion valve 21 is connected to the first flow path 101, the outlet of the first expansion valve 21 is connected to the battery pack heat exchanger inlet interface 68, the outdoor heat exchanger outlet interface 64 is connected to the inlet of the second on-off valve 12, and the outlet of the second on-off valve 12 is connected to the first flow path 101.

[0030] When the vehicle thermal management system is in the independent cooling mode of the battery pack 97, the second on-off valve 12 is open to allow the refrigerant to flow, the first on-off valve 11 is closed to not allow the refrigerant to pass, and the first expansion valve 21 is open to allow the refrigerant to pass and throttle, the high-temperature, high-pressure refrigerant flowing out from the outlet of the compressor 91 dissipates heat in the exterior heat exchanger 93, the refrigerant flowing out from the outlet of the exterior heat exchanger 93 flows into the second on-off valve 12 via the exterior heat exchanger outlet interface 64, and flows into the first flow path 101 from the outlet of the second on-off valve 12, the refrigerant in the first flow path 101 is throttled and reduced in pressure by the first expansion valve 21, then flows out from the battery pack heat exchanger inlet interface 68 and further flows into the battery pack heat exchanger 96, cooling the battery pack 97. In this mode, the first on-off valve 11 connected to the first flow path 101 is in a closed state, and the refrigerant in the first flow path 101 cannot flow to the indoor condenser outlet interface 67 through the first on-off valve 11, so that the first on-off valve 11 can play a role in preventing the refrigerant in the first flow path 101 from flowing back to the indoor condenser 92.

[0031] When the vehicle thermal management system is in a passenger compartment heating mode that utilizes the heat of the battery pack 97, the first on-off valve 11 is open to allow the refrigerant to flow, the second on-off valve 12 is closed to prevent the refrigerant from passing, and the first expansion valve 21 is open to allow the refrigerant to pass through and throttle the refrigerant. The high-temperature, high-pressure refrigerant flowing out from the outlet of the compressor 91 first flows into the interior condenser 92, where it dissipates heat to the passenger compartment and raises the temperature of the passenger compartment. The refrigerant flowing out from the outlet of the interior condenser 92 flows into the first on-off valve 11 through the interior condenser outlet interface 67, flows out from the outlet of the first on-off valve 11 and enters the first flow path 101. The refrigerant in the first flow path 101 is throttled and reduced in pressure by the first expansion valve 21, then flows out from the battery pack heat exchanger inlet interface 68, and further flows into the battery pack heat exchanger 96, absorbing the heat of the battery pack 97 and finally returning to the compressor 91. In this mode, the second on-off valve 12 connected to the first flow path 101 is in a closed state, and the refrigerant in the first flow path 101 cannot flow to the outdoor heat exchanger outlet interface 64 through the second on-off valve 12, so that the second on-off valve 12 can play a role in preventing the refrigerant in the first flow path 101 from flowing back to the outdoor heat exchanger 93.

[0032] According to the above technical solution, the first on-off valve 11, the second on-off valve 12 and the first expansion valve 21 are all integrated into the base 60 and connected to the first flow path 101 formed in the base 60, so there is no need to connect the inlet of the first expansion valve 21 to the outlet of the first on-off valve 11 and the outlet of the second on-off valve 12 respectively through multiple different pipes. That is, in the present disclosure, the first flow path 101 formed in the base 60 can replace multiple external pipes at the inlet of the first expansion valve 21 for connecting the outlet of the first on-off valve 11 and the outlet of the second on-off valve 12, thereby reducing the number of pipes and joints between the first on-off valve 11 and the second on-off valve 12 and the first expansion valve 21, and reducing the complexity of the piping arrangement.

[0033] In addition, an indoor condenser outlet interface 67, an outdoor heat exchanger outlet interface 64, and a battery pack heat exchanger inlet interface 68 are formed on the base 60, and the first on-off valve 11 provided on the base 60 is connected between the indoor condenser outlet interface 67 and a first flow path 101, the second on-off valve 12 is connected between the outdoor heat exchanger outlet interface 64 and the first flow path 101, and the first expansion valve 21 is connected between the first flow path 101 and the battery pack heat exchanger inlet interface 68. During assembly, the outlet of the indoor condenser 92 is connected to the indoor condenser outlet interface 67 via a piping. The refrigerant inlet of the battery pack heat exchanger 96 is connected to the battery pack heat exchanger inlet interface 68 through a pipe, and thus the connections between the indoor condenser 92, the outdoor heat exchanger 93, and the battery pack heat exchanger 96 can be realized, and multiple connection pipes for complexly assembling the first on-off valve 11, the second on-off valve 12, and the first expansion valve 21 between the indoor condenser 92, the outdoor heat exchanger 93, and the battery pack heat exchanger 96 are not required, and the assembly process is simple and convenient. In addition, the first expansion valve 21, the first on-off valve 11, and the second on-off valve 12 are all mounted on the base 60, and form a module with the base 60, which solves the problems of high space occupancy and inconvenience in assembly and maintenance due to the first expansion valve 21, the first on-off valve 11, and the second on-off valve 12 being distributed randomly in the vehicle.

[0034] Optionally, to improve the riding experience of the driver and passengers, the vehicle thermal management system may have a passenger compartment cooling mode, in which, as shown in Fig. 6, in the passenger compartment cooling mode, the refrigerant flowing out from the outlet of the exterior heat exchanger 93 is throttled and reduced in pressure by the second expansion valve 22, and then flows into the interior evaporator 94, which absorbs heat from the passenger compartment to realize cooling of the passenger compartment. Since the inlet of the second expansion valve 22 also needs to be connected to the outlet of the exterior heat exchanger 93, the second expansion valve 22 can be integrated to improve the integration degree of the valve group integration module according to the present disclosure. Specifically, as shown in Figures 1 and 2, the valve group may further include a second expansion valve 22, and as shown in Figure 3, an indoor evaporator inlet interface 65 is further formed on the substrate 60 for connecting to the inlet of the indoor evaporator 94 outside the substrate 60, the inlet of the second expansion valve 22 is connected to the first flow path 101, and the outlet of the second expansion valve 22 is connected to the indoor evaporator inlet interface 65. In this way, the first flow path 101 can not only replace a plurality of external pipes of the inlet of the first expansion valve 21 for connecting the outlet of the first on-off valve 11 and the outlet of the second on-off valve 12, but also replace a plurality of external pipes of the inlet of the second expansion valve 22 for connecting the outlet of the first on-off valve 11 and the outlet of the second on-off valve 12, and the integration degree of the valve group integrated module according to the present disclosure is higher.

[0035] During cooling of the passenger compartment, the second on-off valve 12 is in an open state, the second expansion valve 22 is in an open state, and the first on-off valve 11 is in a closed state, and the refrigerant flowing out from the outlet of the exterior heat exchanger 93 flows into the second on-off valve 12 from the exterior heat exchanger outlet interface 64, and flows into the first flow path 101 from the outlet of the second on-off valve 12. The refrigerant in the first flow path 101 is throttled and lowered in pressure by the second expansion valve 22, and then flows out from the interior evaporator inlet interface 65 and flows into the interior evaporator 94. During cooling of the passenger compartment, the first on-off valve 11 is in a closed state, and therefore the refrigerant in the first flow path 101 does not flow back to the interior condenser 92 via the first on-off valve 11. When cooling the passenger compartment, if it is necessary to cool the battery pack 97, the first expansion valve 21 may be opened, and thus the refrigerant in the first flow path 101 can be divided into two parts, one part flowing to the battery pack heat exchanger 96 via the first expansion valve 21, and the other part flowing to the interior evaporator 94 via the second expansion valve 22.

[0036] In addition, in the case of cooling the passenger compartment, as shown in Fig. 6, the refrigerant flowing out from the outlet of the compressor 91 first flows into the interior condenser 92, and at this time, since the refrigerant is not blown onto the interior condenser 92 by a fan or a blower, the refrigerant does not dissipate heat to the passenger compartment in the interior condenser 92, that is, the interior condenser 92 is used as a flow passage, and the refrigerant flowing out from the outlet of the interior condenser 92 needs to enter the exterior heat exchanger 93 to dissipate heat. For this reason, the outlet of the interior condenser 92 can be connected to the inlet of the exterior heat exchanger 93 via the third on-off valve 13.

[0037] In order to integrate the third on-off valve 13 into the valve group integration module and reduce the number of connecting pipes and joints between the outlet of the indoor condenser 92, the inlet of the third on-off valve 13, and the inlet of the first on-off valve 11, in one exemplary embodiment, the valve group further includes a third on-off valve 13, and as shown in Figures 4 and 5, an outdoor heat exchanger inlet interface 66 connected to the inlet of the outdoor heat exchanger 93 is further formed in the base 60, a second flow path 102 is further formed in the base 60, the indoor condenser outlet interface 67 is connected to the second flow path 102, the inlet of the first on-off valve 11 is connected to the second flow path 102, the inlet of the third on-off valve 13 is connected to the second flow path 102, and the outlet of the third on-off valve 13 is connected to the outdoor heat exchanger inlet interface 66.

[0038] In this way, by turning on or off the first on-off valve 11 and turning on or off the third on-off valve 13, the refrigerant flowing from the indoor condenser outlet interface 67 to the second flow path 102 can flow into the first flow path 101 via the first on-off valve 11, or flow out from the outdoor heat exchanger inlet interface 66 via the third on-off valve 13. In other words, the refrigerant flowing out from the outlet of the indoor condenser 92 can enter the second flow path 102 through the indoor condenser outlet interface 67, and at this time, when the first on-off valve 11 is in an open state, the refrigerant in the second flow path 102 can flow into the first flow path 101 through the first on-off valve 11, and can further flow into the battery pack heat exchanger 96 and / or the indoor evaporator 94 through the first expansion valve 21 and the second expansion valve 22, and when the third on-off valve 13 is in an open state, the refrigerant in the second flow path 102 can flow out from the outdoor heat exchanger inlet interface 66 through the third on-off valve 13, and can further flow into the outdoor heat exchanger 93.

[0039] The inlet of the third on-off valve 13 and the inlet of the first on-off valve 11 are both connected to the second flow path 102 formed in the base 60, and the second flow path 102 is further connected to the interior condenser outlet interface 67 for connecting to the outlet of the interior condenser 92. Therefore, the second flow path 102 in the base 60 replaces the multiple pipes and joints between the outlet of the interior condenser 92 and the inlet of the first on-off valve 11 and the inlet of the third on-off valve 13, thereby further improving the integration degree of the valve group integration module and simplifying the complexity of the piping arrangement of the vehicle thermal management system.

[0040] In a vehicle thermal management system, in the case of a conventional passenger compartment heating mode, the refrigerant after heat dissipation in the interior condenser 92 must be throttled and reduced in pressure by the third expansion valve 23 before entering the exterior heat exchanger 93 to absorb heat from the outside air, and the third expansion valve 23 and the third opening / closing valve 13 are connected in parallel between the interior condenser 92 and the exterior heat exchanger 93. In order to integrate the third expansion valve 23, optionally, the valve group further includes a third expansion valve 23, and as shown in Figures 4 and 5, a third flow path 103 is formed in the base 60, the outdoor heat exchanger inlet interface 66 is connected to the third flow path 103, and the outlet of the third on-off valve 13 is connected to the third flow path 103, thereby connected to the outdoor heat exchanger inlet interface 66 via the third flow path 103, the inlet of the third expansion valve 23 is connected to the second flow path 102, and the outlet of the third expansion valve 23 is connected to the third flow path 103, thereby connected to the outdoor heat exchanger inlet interface 66 via the third flow path 103.

[0041] In this way, by turning on or off the third on-off valve 13 and throttling or blocking the third expansion valve 23, the refrigerant that flows into the second flow path 102 from the indoor condenser outlet interface 67 can flow into the third flow path 103 via the third on-off valve 13, or can flow into the third flow path 103 via the third expansion valve 23, so that the refrigerant flowing out from the outlet of the indoor condenser 92 can selectively be throttled and reduced in pressure by the third expansion valve 23 before flowing into the outdoor heat exchanger 93, or can flow directly into the outdoor heat exchanger 93 without being throttled by the third on-off valve 13 and without being affected. Here, it is necessary to explain that since the first expansion valve 21, the second expansion valve 22 and the third expansion valve 23 are valves that can realize throttling and pressure reduction, in the present disclosure, throttling or blocking of the expansion valves can be understood as opening or closing of the expansion valves, and when the expansion valves are opened, the refrigerant flows through the expansion valve and is throttled and pressure reduced by the expansion valve, and when the expansion valves are closed, the refrigerant cannot flow through the expansion valves.

[0042] The second flow path 102 is connected to the indoor condenser outlet interface 67, and the inlet of the first on-off valve 11, the inlet of the third expansion valve 23, and the inlet of the third on-off valve 13 are all connected to the second flow path 102, so that the second flow path 102 replaces the multiple pipes and joints connected between the outlet of the indoor condenser 92 and the inlet of the first on-off valve 11, the inlet of the third on-off valve 13, and the inlet of the third expansion valve 23, thereby further reducing the number of pipes in the vehicle thermal management system. The third flow path 103 is connected to the outdoor heat exchanger inlet interface 66, and the outlet of the third on-off valve 13 and the outlet of the third expansion valve 23 are all connected to the third flow path 103, so that the third flow path 103 replaces the multiple pipes connected between the outlet of the third on-off valve 13, the outlet of the third expansion valve 23, and the inlet of the outdoor heat exchanger 93, thereby achieving the purpose of reducing the number of pipes in the vehicle thermal management system.

[0043] In addition, in the case of the conventional passenger compartment heating mode, the refrigerant flowing out from the outlet of the exterior heat exchanger 93 flows directly into the inlet of the compressor 91 or passes through a gas-liquid separator 95 before flowing into the inlet of the compressor 91, and a third on-off valve 13 is installed between the outlet of the exterior heat exchanger 93 and the inlet of the compressor 91 or the inlet of the gas-liquid separator 95 connected to the compressor 91. Since the inlet of the third on-off valve 13 and the inlet of the first on-off valve 11 are both connected to the outlet of the outdoor heat exchanger 93, in order to integrate the third on-off valve 13, the valve group optionally further includes a fourth on-off valve 14, and as shown in FIG. 3, a return inlet interface 62 is further formed in the base 60 for connecting to the inlet of the compressor 91 outside the base 60 or the inlet of the gas-liquid separator 95 connected to the compressor 91, and a fourth flow path 104 is further formed in the base 60, the outdoor heat exchanger outlet interface 64 is connected to the fourth flow path 104, the inlet of the second on-off valve 12 is connected to the fourth flow path 104, the inlet of the fourth on-off valve 14 is connected to the fourth flow path 104, and the outlet of the fourth on-off valve 14 is connected to the return inlet interface 62.

[0044] Since the fourth flow path 104 is connected to the exterior heat exchanger outlet interface 64, and the inlet of the second on-off valve 12 and the inlet of the fourth on-off valve 14 are both connected to the fourth flow path 104, the fourth flow path 104 in the base 60 replaces the multiple pipes connecting the outlet of the exterior heat exchanger 93 to the inlet of the second on-off valve 12 and the inlet of the fourth on-off valve 14, further reducing the number of pipes in the vehicle thermal management system.

[0045] As shown in FIG. 6, the refrigerant flowing out from the refrigerant outlet of the battery pack heat exchanger 96 needs to flow into the inlet of the compressor 91, or pass through the gas-liquid separator 95 before flowing into the inlet of the compressor 91. In order to reduce the number of connecting pipes between the refrigerant outlet of the battery pack heat exchanger 96, the outlet of the fourth on-off valve 14, and the compressor 91 or the gas-liquid separator 95, in one embodiment according to the present disclosure, as shown in FIG. 4 and FIG. 5, a fifth flow path 105 is further formed in the base 60, the outlet of the fourth on-off valve 14 is connected to the fifth flow path 105, the reflux inlet interface 62 is connected to the fifth flow path 105, and a battery pack heat exchanger outlet interface 61 for connecting to the refrigerant outlet of the battery pack heat exchanger 96 is further formed in the base 60, and the battery pack heat exchanger outlet interface 61 is connected to the fifth flow path 105. In this way, whether the refrigerant flows out from the refrigerant outlet of the battery pack heat exchanger 96 or the refrigerant flows out from the outlet of the fourth on-off valve 14, it can flow into the fifth flow path 105 and flow through the return inlet interface 62 into the compressor 91 or the gas-liquid separator 95 connected to the compressor 91.

[0046] In addition, the refrigerant flowing out from the outlet of the indoor evaporator 94 also needs to flow into the inlet of the compressor 91, or pass through the gas-liquid separator 95 before flowing into the inlet of the compressor 91. Optionally, as shown in Figures 3 and 5, an indoor evaporator outlet interface 63 for connecting to the outlet of the indoor evaporator 94 may be formed on the base 60, and the indoor evaporator outlet interface 63 is connected to the fifth flow path 105. In this way, the refrigerant flowing out from the outlet of the indoor evaporator 94 can also flow into the compressor 91 or the gas-liquid separator 95 connected to the compressor 91 through the fifth flow path 105 and the reflux inlet interface 62 connected to the fifth flow path 105.

[0047] A temperature sensor 30 may also be integrated into the valve group integrated module to facilitate detection of the temperature of the refrigerant flowing out of the outlet of the indoor evaporator 94. As an optional embodiment, as shown in Figures 1, 2 and 5, the valve group integrated module further includes a temperature sensor 30, in which a first through hole 813, a second through hole 814 and a third through hole 815 are formed in the fifth flow passage 105, the second through hole 814 is located between the first through hole 813 and the third through hole 815, the first through hole 813 is connected to the indoor evaporator outlet interface 63, and the third through hole 815 is connected to the return inlet interface 62, the temperature sensor 30 is mounted on the base 60, and the detection end of the temperature sensor 30 passes through the second through hole 814 and is located in the fourth sub-flow passage. The refrigerant flowing out from the outlet of the indoor evaporator 94 passes through the indoor evaporator outlet interface 63 and the first through hole 813 and flows into the fifth flow path 105, flows toward the third through hole 815 in the fifth flow path 105, and flows into the inlet of the compressor 91 or the inlet of the gas-liquid separator 95 via the return inlet interface 62 connected to the third through hole 815, and the detection end of the temperature sensor 30 is located between the first through hole 813 and the second through hole 814, and the refrigerant flowing out from the outlet of the indoor evaporator 94 passes through the detection end of the temperature sensor 30 as it flows in the fifth flow path 105, thereby allowing the temperature sensor 30 to detect the temperature of the refrigerant in the fifth flow path 105.

[0048] Optionally, as shown in Figures 4 and 5, a fourth through hole 816 may be further formed in the fifth flow path 105, and the fourth through hole 816 is used to communicate with the battery pack heat exchanger outlet interface 61.

[0049] Optionally, as shown in Fig. 5, a first on-off valve outlet interface 808, a second on-off valve outlet interface 807, a first expansion valve inlet interface 819, and a second expansion valve inlet interface 818 may be formed in the first flow path 101. The first on-off valve outlet interface 808 may be indirectly connected to the outlet of the first on-off valve 11 via a first transition flow path, or may be directly docked to the outlet of the first on-off valve 11 without a transition flow path. The second on-off valve outlet interface 807 may be indirectly connected to the outlet of the second on-off valve 12 via a second transition flow path, or may be directly docked to the outlet of the second on-off valve 12 without a transition flow path. The first expansion valve inlet interface 819 can be indirectly connected to the outlet of the first expansion valve 21 via a third transition passage or can be directly docked to the inlet of the first expansion valve 21 without a transition passage, the outlet of the first expansion valve 21 can be indirectly connected to the battery pack heat exchanger inlet interface 68 via a fourth transition passage or can be directly docked to the battery pack heat exchanger inlet interface 68 without a transition passage. The second expansion valve inlet interface 818 can be indirectly connected to the outlet of the second expansion valve 22 via a fifth transition passage or can be directly docked to the inlet of the second expansion valve 22 without a transition passage, the outlet of the second expansion valve 22 can be indirectly connected to the indoor evaporator inlet interface 65 via a sixth transition passage or can be directly docked to the indoor evaporator inlet interface 65 without a transition passage.

[0050] Optionally, as shown in FIG. 5, a first on-off valve inlet interface 803, a third on-off valve inlet interface 801, a third expansion valve inlet interface 817, and a second flow path inlet 802 may be formed in the second flow path 102. The first on-off valve inlet interface 803 may be indirectly connected to the inlet of the first on-off valve 11 via a seventh transition flow path, or may be directly docked to the inlet of the first on-off valve 11 without a transition flow path. The third on-off valve inlet interface 801 may be indirectly connected to the inlet of the third on-off valve 13 via an eighth transition flow path, or may be directly docked to the inlet of the third on-off valve 13 without a transition flow path. The third expansion valve inlet interface 817 may be indirectly connected to the inlet of the third expansion valve 23 via a ninth transition flow path, or may be directly docked to the inlet of the third expansion valve 23 without a transition flow path. The second flow passage inlet 802 may be indirectly connected to the indoor condenser outlet interface 67 via a tenth transition flow passage.

[0051] Optionally, as shown in FIG. 5, a third on-off valve outlet interface 806, a third expansion valve outlet interface 805, and a third flow path outlet 804 may be formed in the third flow path 103. The third on-off valve outlet interface 806 may be indirectly connected to the outlet of the third on-off valve 13 via an eleventh transition flow path, or may be directly docked to the outlet of the third on-off valve 13 without a transition flow path. The third expansion valve outlet interface 805 may be indirectly connected to the outlet of the third expansion valve 23 via a twelfth transition flow path, or may be directly docked to the outlet of the third expansion valve 23 without a transition flow path. The outdoor heat exchanger inlet interface 66 may be indirectly connected to the third flow path outlet 804 via a thirteenth transition flow path.

[0052] Optionally, as shown in FIG. 5, a second on-off valve inlet interface 809, a fourth on-off valve inlet interface 811, and a fourth flow path inlet 810 may be formed in the fourth flow path 104. The second on-off valve inlet interface 809 may be indirectly connected to the inlet of the second on-off valve 12 via a fourteenth transition flow path, or may be directly docked to the inlet of the second on-off valve 12 without a transition flow path. The fourth on-off valve inlet interface 811 may be indirectly connected to the inlet of the fourth on-off valve 14 via a fifteenth transition flow path, or may be directly docked to the inlet of the fourth on-off valve 14 without a transition flow path. The outdoor heat exchanger outlet interface 64 may be connected to the fourth flow path inlet 810 via a sixteenth transition flow path.

[0053] Optionally, as shown in FIG. 5, a fourth on-off valve outlet interface 812 may be formed in the fifth flow path 105, and the fourth on-off valve outlet interface 812 may be indirectly connected to the outlet of the fourth on-off valve 14 via the seventeenth transition flow path, or may be directly docked to the outlet of the fourth on-off valve 14 without via a transition flow path.

[0054] As mentioned above, the first flow passage 101, the second flow passage 102, the third flow passage 103, the fourth flow passage 104, and the fifth flow passage 105 are formed in the substrate 60, and the substrate 60 may have any suitable structure and shape and may be manufactured in any suitable manner to form the first flow passage 101, the second flow passage 102, the third flow passage 103, the fourth flow passage 104, and the fifth flow passage 105. For example, in one embodiment, the substrate 60 may be integrally molded using a molding die, for example by casting, so that the first flow passage 101, the second flow passage 102, the third flow passage 103, the fourth flow passage 104, and the fifth flow passage 105 are formed during the molding process.

[0055] In another embodiment, the base body 60 may have a split structure. As shown in FIGS. 2 and 4 , the base body 60 includes a first body 40 and a second body 50, the first body 40 includes a first connecting surface 401, the second body 50 includes a second connecting surface 501, the first connecting surface 401 is sealingly connected to the second connecting surface 501, and the first connecting surface 401 is recessed inward to form a first groove 701, a second groove 702, a third groove 703, a fourth groove 704 and a fifth groove 705. The second connecting surface 501 and the first groove 701 together define the first flow path 101, the second connecting surface 501 and the second groove 702 together define the second flow path 102, the second connecting surface 501 and the third groove 703 together define the third flow path 103, the second connecting surface 501 and the fourth groove 704 together define the fourth flow path 104, and the second connecting surface 501 and the fifth groove 705 together define the fifth flow path 105. The first on-off valve 11, the second on-off valve 12, the third on-off valve 13, the fourth on-off valve 14, the first expansion valve 21, the second expansion valve 22, and the third expansion valve 23 are all provided in a first separate body 40, or the first on-off valve 11, the second on-off valve 12, the third on-off valve 13, the fourth on-off valve 14, the first expansion valve 21, the second expansion valve 22, and the third expansion valve 23 are all provided in a second separate body 50. In other words, the first on-off valve 11, the second on-off valve 12, the third on-off valve 13, the first expansion valve 21, the second expansion valve 22 and the third expansion valve 23 may be located in the same separate body as the first groove 701, the second groove 702, the third groove 703, the fourth groove 704 and the fourth groove 704, or may be located in a different separate body, and the present disclosure does not limit this.

[0056] The substrate 60 is arranged to include a first separate body 40 and a second separate body 50 which are fitted together. A first groove 701, a second groove 702, a third groove 703, a fourth groove 704 and a fifth groove 705 are formed on the surface of the first separate body 40. The first separate body 40 and the second separate body 50 are fitted together to form a first flow passage 101, a second flow passage 102, a third flow passage 103, a fourth flow passage 104 and a fifth flow passage 105. The advantage of this is that the manufacturing process of opening the first groove 701, the second groove 702, the third groove 703, the fourth groove 704 and the fifth groove 705 on the surface of the first separate body 40 is simpler, which makes it convenient to form and manufacture the flow passages, and is particularly convenient to manufacture a curved flow passage.

[0057] Optionally, at least one of the first groove 701, the second groove 702 and the third groove 703 is a curved groove, and at least one of the fourth groove 704 and the fifth groove 705 is a curved groove.

[0058] In an embodiment in which curved grooves are formed in the first groove 701, the second groove 702, the third groove 703, the fourth groove 704, and the fifth groove 705, the angle of the curved groove can be made 90° or more, thereby reducing the flow resistance of the refrigerant flowing through the curved flow path.

[0059] In addition, interfaces such as the indoor condenser outlet interface 67, the outdoor heat exchanger inlet interface 66, the outdoor heat exchanger outlet interface 64, the indoor evaporator inlet interface 65, the reflux inlet interface 62, the battery pack heat exchanger outlet interface 61, etc. are provided on the outer surface of the base 60, and a first groove 701, a second groove 702, a third groove 703, a fourth groove 704 and a fifth groove 705 are opened in the first separate body 40, thereby facilitating communication between the interfaces located on the surface and the corresponding sub-flow paths. Specifically, for example, in the case of the fourth flow passage 104 and the outdoor heat exchanger outlet interface 64 connected to the fourth flow passage 104, a fourth groove 704 is opened in the first separate body 40, and then a linear chamber is punched through from the groove wall of the third groove 703 to the outer surface of the first separate body 40 to form a fourth flow passage inlet 810, the outdoor heat exchanger outlet interface 64, and a transition flow passage connected between the fourth flow passage inlet 810 and the outdoor heat exchanger outlet interface 64. The communication manner between the other interfaces and the corresponding sub-flow passages is similar to the communication manner between the outdoor heat exchanger outlet interface 64 and the fourth flow passage 104, and will not be described again here.

[0060] The first on-off valve 11 and the second on-off valve 12 can be attached to the base body 60 at any appropriate position. As an embodiment, as shown in Figures 1 to 5, the axis of the valve core of the first on-off valve 11 may be perpendicular to both the plane on which the first flow path 101 is located and the plane on which the second flow path 102 is located, the axis of the valve core of the second on-off valve 12 may be perpendicular to both the plane on which the first flow path 101 is located and the plane on which the fourth flow path 104 is located, the axis of the valve core of the third on-off valve 13 may be perpendicular to both the plane on which the first flow path 101 is located and the plane on which the third flow path 103 is located, and the axis of the valve core of the fourth on-off valve 14 may be perpendicular to both the plane on which the fourth flow path 104 is located and the plane on which the fifth flow path 105 is located, thereby preventing the accumulation of impurities in the first on-off valve 11, the second on-off valve 12, the third on-off valve 13, and the fourth on-off valve 14. Here, the plane on which the flow path is located refers to a plane defined by the length direction and width direction of the substrate 60 shown in FIG.

[0061] In a specific embodiment according to the present disclosure, as shown in FIGS. 2 to 4 , the first separate body 40 is formed in a cube shape, and has two wide sides defined by the length and width of the first separate body 40, and four narrow sides defined by the length and thickness of the first separate body 40 and the width and thickness of the first separate body 40, and the first groove 701, the second groove 702, the third groove 703, the fourth groove 704 and the fifth groove 705 can be formed on the wide sides, and the first on-off valve 11, the second on-off valve 12, the third on-off valve 13 and the fourth on-off valve 14 can be attached to the other wide side, which Thus, the axis of the valve core of the first on-off valve 11 may be mutually perpendicular to the plane on which the first flow path 101 is located and the plane on which the second flow path 102 is located, the axis of the valve core of the second on-off valve 12 may be mutually perpendicular to both the plane on which the first flow path 101 is located and the plane on which the fourth flow path 104 is located, the axis of the valve core of the third on-off valve 13 may be mutually perpendicular to both the plane on which the first flow path 101 is located and the plane on which the third flow path 103 is located, and the axis of the valve core of the fourth on-off valve 14 may be mutually perpendicular to both the plane on which the fourth flow path 104 is located and the plane on which the fifth flow path 105 is located. The first expansion valve 21, the second expansion valve 22, and the third expansion valve 23 can be mounted on a narrow surface, facilitating the connection of the first expansion valve 21, the second expansion valve 22, and the third expansion valve 23 with their corresponding flow paths and interfaces. Optionally, the first expansion valve 21, the second expansion valve 22 and the third expansion valve 23 can be mounted on different narrow surfaces.

[0062] The first on-off valve 11, the second on-off valve 12, the third on-off valve 13, the fourth on-off valve 14, the first expansion valve 21, the second expansion valve 22, the third expansion valve 23, and the temperature sensor 30 can be attached to the base 60 in any suitable manner. For example, as shown in FIGS. 2 to 4 , in one embodiment according to the present disclosure, a first expansion valve mounting hole 211, a second expansion valve mounting hole 221, a third expansion valve mounting hole 231, a first on-off valve mounting hole 111, a second on-off valve mounting hole 121, a third on-off valve mounting hole 131, a fourth on-off valve mounting hole 141, and a temperature sensor mounting hole may be formed in the base 60, and the first expansion valve mounting hole 211, the second expansion valve mounting hole 221, the third expansion valve mounting hole 231, the first on-off valve mounting hole 111, the second on-off valve mounting hole 121, the third on-off valve mounting hole 131, the fourth on-off valve mounting hole 141, and a temperature sensor mounting hole may be formed in the base 60. Both the on-off valve mounting hole 141 and the temperature sensor mounting hole can have female threads formed on their hole walls, making it easy to screw the first on-off valve 11, the second on-off valve 12, the third on-off valve 13, the fourth on-off valve 14, the first expansion valve 21, the second expansion valve 22, the third expansion valve 23, and the temperature sensor 30 into the first on-off valve mounting hole 111, the second on-off valve mounting hole 121, the third on-off valve mounting hole 131, the fourth on-off valve mounting hole 141, the first expansion valve mounting hole 211, the second expansion valve mounting hole 221, the third expansion valve mounting hole 231, and the temperature sensor mounting hole, respectively.

[0063] In addition, in order to further improve the fixation of the first expansion valve 21, the second expansion valve 22 and the third expansion valve 23, as shown in Figures 2 and 3, a first expansion valve fastening hole 212, a second expansion valve fastening hole 222 and a third expansion valve fastening hole 232 may be formed in the base 60, and a first bolt may pass through the mounting plate on the first expansion valve 21 and screw into the first expansion valve fastening hole 212, a second bolt may pass through the mounting plate on the second expansion valve 22 and screw into the second expansion valve fastening hole 222, and a third bolt may pass through the mounting plate on the third expansion valve 23 and screw into the third expansion valve fastening hole 232.

[0064] Optionally, in order to facilitate positioning and assembly of the first on-off valve 11, the second on-off valve 12, the third on-off valve 13 and the fourth on-off valve 14, as shown in FIG. 3, a first on-off valve positioning hole 112, a second on-off valve positioning hole 122, a third on-off valve positioning hole 132 and a fourth on-off valve positioning hole 142 may be formed in the base 60, where the first on-off valve positioning hole 112 is used to align with a positioning plate on the first on-off valve 11, the second on-off valve positioning hole 122 is used to align with a positioning plate on the second on-off valve 12, the third on-off valve positioning hole 132 is used to align with a positioning plate on the third on-off valve 13 and the fourth on-off valve positioning hole 142 is used to align with a positioning plate on the fourth on-off valve 14.

[0065] For ease of understanding, the following will describe in detail the flow paths of the refrigerant in the main operating modes of the vehicle thermal management system based on the vehicle thermal management system shown in Figures 6 and 7, combining the valve group integration module shown in Figures 1 to 5.

[0066] Mode 1: Passenger compartment cooling mode. As shown in Figures 6 and 7, in this mode, the main flow path of the refrigerant is the compressor 91 → indoor condenser 92 → third on-off valve 13 → outdoor heat exchanger 93 → second on-off valve 12 → second expansion valve 22 → indoor evaporator 94 → gas-liquid separator 95 → compressor 91. In this mode, the refrigerant is at a low temperature and low pressure in the indoor evaporator 94, and the refrigerant indoor evaporator 94 absorbs heat from the passenger compartment to achieve cooling of the passenger compartment.

[0067] It is important to explain that in this mode, the refrigerant flowing out from the outlet of the compressor 91 flows through the indoor condenser 92, but since there is no need to blow it onto the indoor condenser 92 using a fan or blower, the high-temperature, high-pressure refrigerant flowing into the indoor condenser 92 is prevented from radiating heat and condensing in the indoor condenser 92; in other words, in this mode, the indoor condenser 92 functions as a flow path.

[0068] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant is: compressor 91 → indoor condenser 92 → indoor condenser outlet interface 67 → second flow path inlet 802 → second flow path 102 → third on-off valve inlet interface 801 → third on-off valve 13 → third on-off valve outlet interface 806 → third flow path 103 → third flow path outlet 804 → outdoor heat exchanger inlet interface 66 → outdoor heat exchanger 93 → outdoor heat exchanger outlet interface 64 → fourth flow path The order is: passage inlet 810 → fourth flow path 104 → second on-off valve inlet interface 809 → second on-off valve 12 → second on-off valve outlet interface 807 → first flow path 101 → second expansion valve inlet interface 818 → second expansion valve 22 → indoor evaporator inlet interface 65 → indoor evaporator 94 → indoor evaporator outlet interface 63 → first through hole 813 → fifth flow path 105 → third through hole 815 → reflux inlet interface 62 → gas-liquid separator 95 → compressor 91.

[0069] Mode 2: Battery pack 97 cooling mode. As shown in Figs. 6 and 7, in this mode, the main flow path of the refrigerant is the compressor 91 → indoor condenser 92 → third on-off valve 13 → outdoor heat exchanger 93 → second on-off valve 12 → first expansion valve 21 → battery pack heat exchanger 96 → gas-liquid separator 95 → compressor 91. The main flow path of the coolant is the battery pack 97 → battery pack heat exchanger 96 → battery pack 97. In this mode, in the battery pack heat exchanger 96, the low-temperature, low-pressure refrigerant absorbs heat from the high-temperature coolant, causing low-temperature coolant to flow out from the coolant outlet of the battery pack heat exchanger 96, and the low-temperature coolant absorbs heat from the battery pack 97 while flowing through the battery pack 97, thereby realizing cooling and lowering the temperature of the battery pack 97.

[0070] It is important to explain that in this mode, the refrigerant flowing out from the outlet of the compressor 91 flows through the indoor condenser 92, but since there is no need to blow it onto the indoor condenser 92 using a fan or blower, the high-temperature, high-pressure refrigerant flowing into the indoor condenser 92 is prevented from radiating heat and condensing in the indoor condenser 92; in other words, in this mode, the indoor condenser 92 functions as a flow path.

[0071] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant is: compressor 91 → indoor condenser 92 → indoor condenser outlet interface 67 → second flow path inlet 802 → second flow path 102 → third on-off valve inlet interface 801 → third on-off valve 13 → third on-off valve outlet interface 806 → third flow path 103 → third flow path outlet 804 → outdoor heat exchanger inlet interface 66 → outdoor heat exchanger 93 → outdoor heat exchanger outlet interface 64 → fourth flow path inlet 810 →fourth flow path 104 →second on-off valve inlet interface 809 →second on-off valve 12 →second on-off valve outlet interface 807 →first flow path 101 →first expansion valve inlet interface 819 →first expansion valve 21 →battery pack heat exchanger inlet interface 68 →battery pack heat exchanger 96 →battery pack heat exchanger outlet interface 61 →fourth through hole 816 →fifth flow path 105 →third through hole 815 →reflux inlet interface 62 →gas-liquid separator 95 →compressor 91.

[0072] Mode 3: Passenger compartment cooling and battery pack 97 cooling mode. As can be understood, this mode is a simultaneous operation mode of the above-mentioned modes 1 and 2. In this mode, the main flow path of the refrigerant is the compressor 91 → indoor condenser 92 → third on-off valve 13 → outdoor heat exchanger 93 → second on-off valve 12, where the refrigerant flowing out from the outlet of the second on-off valve 12 is divided into two parts, one flow path is the second expansion valve 22 → indoor evaporator 94 → gas-liquid separator 95 → compressor 91, and the other flow path is the first expansion valve 21 → battery pack heat exchanger 96 → gas-liquid separator 95 → compressor 91. The main flow path of the coolant is the battery pack 97 → battery pack heat exchanger 96 → battery pack 97. It is important to explain that in this mode, the refrigerant flowing out from the compressor 91 outlet flows through the indoor condenser 92, but since there is no need to blow it onto the indoor condenser 92 using a fan or blower, the high-temperature, high-pressure refrigerant flowing into the indoor condenser 92 is prevented from radiating heat and condensing in the indoor condenser 92; in other words, in this mode, the indoor condenser 92 functions as a flow path.

[0073] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant is: compressor 91 → indoor condenser 92 → indoor condenser outlet interface 67 → second flow path inlet 802 → second flow path 102 → third on-off valve inlet interface 801 → third on-off valve 13 → third on-off valve outlet interface 806 → third flow path 103 → third flow path outlet 804 → outdoor heat exchanger inlet interface 66 → outdoor heat exchanger 93 → outdoor heat exchanger outlet interface 64 → fourth flow path inlet 810 → fourth flow path 104 → second on-off valve inlet interface 809 → second on-off valve 12 → second on-off valve outlet interface 807 → first flow path 101. The refrigerant in the first flow path 101 is divided into two parts, one specific flow path is the second expansion valve inlet interface 818 → the second expansion valve 22 → the indoor evaporator inlet interface 65 → the indoor evaporator 94 → the indoor evaporator outlet interface 63 → the first through hole 813 → the fifth flow path 105, and the other specific flow path is the first expansion valve inlet interface 819 → the first expansion valve 21 → the battery pack heat exchanger inlet interface 68 → the battery pack heat exchanger 96 → the battery pack heat exchanger outlet interface 61 → the fourth through hole 816 → the fifth flow path 105. In other words, the refrigerant flowing out from the outlet of the indoor evaporator 94 and the refrigerant flowing out from the refrigerant outlet of the battery pack heat exchanger 96 flow into the fifth flow path 105 via the indoor evaporator outlet interface 63 and the battery pack heat exchanger outlet interface 61, respectively, and merge into the fifth flow path 105. The specific flow path of the refrigerant after merging is the third through hole 815 → return inlet interface 62 → gas-liquid separator 95 → compressor 91.

[0074] Mode 4: Passenger compartment heating mode. As shown in Figures 6 and 7, in this mode, the main flow path of the refrigerant is the compressor 91 → the interior condenser 92 → the third expansion valve 23 → the exterior heat exchanger 93 → the fourth opening and closing valve 14 → the gas-liquid separator 95 → the compressor 91. In this mode, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor 91 flows into the interior condenser 92 and dissipates heat in the interior condenser 92, thereby increasing the temperature of the passenger compartment and realizing heating of the passenger compartment. In the embodiment in which the PTC air heater 98 is installed, the PTC air heater 98 may be turned on in the passenger compartment heating mode, and is combined with the interior condenser 92 to heat the passenger compartment.

[0075] In this mode, if there is a demand for heating the battery pack 97, the PTC water heater 99 in the coolant circuit in which the battery pack 97 and the battery pack heat exchanger 96 are connected in series can be started, and the coolant is heated by the PTC water heater 99, thereby heating the battery pack 97 and realizing the passenger compartment heating and battery pack 97 heating modes. In the passenger compartment heating mode, the refrigerant does not flow into the battery pack heat exchanger 96, and only the coolant flows into the battery pack heat exchanger 96, so no heat exchange occurs in the coolant-battery pack heat exchanger 96, and at this time the battery pack heat exchanger 96 can function as a flow path.

[0076] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant in mode 4 is as follows: compressor 91 → indoor condenser 92 → indoor condenser 92 → indoor condenser outlet interface 67 → second flow path inlet 802 → second flow path 102 → third expansion valve inlet interface 817 → third expansion valve 23 → third expansion valve outlet interface 805 → third flow path 103 → third flow path outlet 804 → outdoor heat exchanger inlet interface 66 → outdoor heat exchanger 93 → outdoor heat exchanger outlet interface 64 → fourth flow path inlet 810 → fourth flow path 104 → fourth on-off valve inlet interface 811 → fourth on-off valve 14 → fourth on-off valve outlet interface 812 → fifth flow path 105 → third through hole 815 → reflux inlet interface 62 → gas-liquid separator 95 → compressor 91.

[0077] Mode 5: Passenger compartment heating mode using heat from the battery pack 97. As shown in Figs. 6 and 7, in this mode, the main flow path of the refrigerant is the compressor 91 → interior condenser 92 → first on-off valve 11 → first expansion valve 21 → battery pack heat exchanger 96 → gas-liquid separator 95 → compressor 91. In this mode, the high-temperature, high-pressure refrigerant flowing out from the compressor 91 outlet flows into the interior condenser 92 and dissipates heat in the interior condenser 92, thereby increasing the temperature of the passenger compartment and realizing heating of the passenger compartment. In the battery pack heat exchanger 96, the low-temperature, low-pressure refrigerant absorbs heat from the high-temperature coolant, thereby transferring the heat of the battery pack 97 to the refrigerant, which is used to heat the passenger compartment.

[0078] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant is: compressor 91 → indoor condenser 92 → indoor condenser 92 inlet interface → second flow path inlet 802 → second flow path 102 → first on-off valve inlet interface 803 → first on-off valve 11 → first on-off valve outlet interface 808 → first flow path 101 → first expansion valve inlet interface 819 → first expansion valve 21 → battery pack heat exchanger inlet interface 68 → battery pack heat exchanger 96 → battery pack heat exchanger outlet interface 61 → fourth through hole 816 → fifth flow path 105 → third through hole 815 → reflux inlet interface 62 → gas-liquid separator 95 → compressor 91.

[0079] Mode 6: Passenger compartment dehumidification mode. As shown in Figures 6 and 7, in this mode, the main flow path of the refrigerant is the compressor 91 → the interior condenser 92 → the third on-off valve 13 → the exterior heat exchanger 93 → the second on-off valve 12 → the second expansion valve 22 → the interior evaporator 94 → the gas-liquid separator 95 → the compressor 91. In this mode, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor 91 dissipates heat in the interior condenser 92, and becomes a low-temperature and low-pressure refrigerant in the interior evaporator 94. In this way, when the hot and humid air in the passenger compartment hits the cold interior evaporator 94, the water vapor in the humid air condenses on the surface of the interior evaporator 94 to become condensed water, thereby achieving the purpose of dehumidifying the passenger compartment.

[0080] By combining the valve group integration module according to the present disclosure, the specific flow path of the refrigerant is: compressor 91 → indoor condenser 92 → indoor condenser outlet interface 67 → second flow path inlet 802 → second flow path 102 → third on-off valve inlet interface 801 → third on-off valve 13 → third on-off valve outlet interface 806 → third flow path 103 → third flow path outlet 804 → outdoor heat exchanger inlet interface 66 → outdoor heat exchanger 93 → outdoor heat exchanger outlet interface 64 → fourth flow path The order is: passage inlet 810 → fourth flow path 104 → second on-off valve inlet interface 809 → second on-off valve 12 → second on-off valve outlet interface 807 → first flow path 101 → second expansion valve inlet interface 818 → second expansion valve 22 → indoor evaporator inlet interface 65 → indoor evaporator 94 → indoor evaporator outlet interface 63 → first through hole 813 → fifth flow path 105 → third through hole 815 → reflux inlet interface 62 → gas-liquid separator 95 → compressor 91.

[0081] According to another aspect of the present disclosure, there is further provided a vehicle thermal management system comprising the valve group integration module described above.

[0082] According to a further aspect of the present disclosure, there is further provided a vehicle comprising the vehicle thermal management system described above.

[0083] Although the preferred embodiments of the present disclosure have been described in detail above with reference to the drawings, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications belong to the protection scope of the present disclosure.

[0084] It should also be noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner if not contradictory, and in order to avoid unnecessary duplication, the present disclosure does not separately describe various possible combination manners.

[0085] In addition, the different embodiments of the present disclosure may be arbitrarily combined without departing from the spirit of the present disclosure, and are also considered to be the contents disclosed in the present disclosure.

[0086] This disclosure claims priority to a Chinese patent application submitted to the China Patent Office on May 31, 2021, bearing application number 202110603349.4 and title "Valve Group Integration Module, Vehicle Thermal Management System and Vehicle," the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0087] 11 - first on-off valve, 12 - second on-off valve, 13 - third on-off valve, 14 - fourth on-off valve, 21 - first expansion valve, 22 - second expansion valve, 23 - third expansion valve, 30 - temperature sensor, 111 - first on-off valve mounting hole, 112 - first on-off valve positioning hole, 121 - second on-off valve mounting hole, 122 - second on-off valve positioning hole, 131 - third on-off valve mounting hole, 132 - third on-off valve positioning hole, 141 - fourth on-off valve mounting hole, 142 - fourth on-off valve positioning hole, 211 - first expansion valve mounting hole, 212 - first expansion valve tightening hole, 221 - second expansion valve mounting hole, 222 - second expansion Valve fastening hole, 231-third expansion valve mounting hole, 232-third expansion valve fastening hole, 61-battery pack heat exchanger outlet interface, 62-reflux inlet interface, 63-indoor evaporator outlet interface, 64-outdoor heat exchanger outlet interface, 65-indoor evaporator inlet interface, 66-outdoor heat exchanger inlet interface, 67-indoor condenser outlet interface, 68-battery pack heat exchanger inlet interface, 101-first passage, 102-second passage, 103-third passage, 104-fourth passage, 105-fifth passage, 701-first recess groove, 702 - second groove, 703 - third groove, 704 - fourth groove, 705 - fifth groove, 802 - second flow path inlet, 804 - third flow path outlet, 810 - fourth flow path inlet, 803 - first on-off valve inlet interface, 808 - first on-off valve outlet interface, 809 - second on-off valve inlet interface, 807 - second on-off valve outlet interface, 801 - third on-off valve inlet interface, 806 - third on-off valve outlet interface, 811 - fourth on-off valve inlet interface, 812 - fourth on-off valve outlet interface, 819 - 1st expansion valve inlet interface, 818-2nd expansion valve inlet interface, 817-3rd expansion valve inlet interface, 805-3rd expansion valve outlet interface, 813-1st through hole, 814-2nd through hole, 815-3rd through hole, 816-4th through hole, 60-base, 40-1st separate body, 401-1st connection surface, 50-2nd separate body, 501-2nd connection surface, 91-compressor, 92-indoor condenser, 93-outdoor heat exchanger, 94-indoor evaporator, 95-gas-liquid separator, 96-battery pack heat exchanger, 97-battery pack, 98-PTC air heater;99-PTC water heater.

Claims

1. The system comprises a base (60) and a valve group provided on the base (60), the valve group comprising a first on-off valve (11), a second on-off valve (12) and a first expansion valve (21); The base (60) is formed with an indoor condenser outlet interface (67) for connecting to an outlet of an indoor condenser (92) outside the base (60), an outdoor heat exchanger outlet interface (64) for connecting to an outlet of an outdoor heat exchanger (93) outside the base (60), and a battery pack heat exchanger inlet interface (68) for connecting to a refrigerant inlet of a battery pack heat exchanger (96) outside the base (60); A first flow path (101) is formed in the base (60), an inlet of the first on-off valve (11) is connected to the indoor condenser outlet interface (67), an outlet of the first on-off valve (11) is connected to the first flow path (101), an inlet of the first expansion valve (21) is connected to the first flow path (101), an outlet of the first expansion valve (21) is connected to the battery pack heat exchanger inlet interface (68), the outdoor heat exchanger outlet interface (64) is connected to the inlet of the second on-off valve (12), and an outlet of the second on-off valve (12) is connected to the first flow path (101); the valve group further comprises a fourth on-off valve (14), the base (60) is further formed with a return inlet interface (62) for connecting to an inlet of a compressor (91) outside the base (60) or an inlet of a gas-liquid separator (95) connected to the compressor (91), a fourth flow path (104) is further formed within the base (60), the outdoor heat exchanger outlet interface (64) is connected to the fourth flow path (104), an inlet of the second on-off valve (12) is connected to the fourth flow path (104), an inlet of the fourth on-off valve (14) is connected to the fourth flow path (104), and an outlet of the fourth on-off valve (14) is connected to the return inlet interface (62).

2. 2. The valve group integration module of claim 1, wherein the valve group further comprises a second expansion valve (22), and the base (60) is further formed with an indoor evaporator inlet interface (65) for connecting to an inlet of an indoor evaporator (94) outside the base (60), the inlet of the second expansion valve (22) being connected to the first flow path (101), and the outlet of the second expansion valve (22) being connected to the indoor evaporator inlet interface (65).

3. 3. The valve group integration module according to claim 1 or 2, characterized in that the valve group further includes a third on-off valve (13), an outdoor heat exchanger inlet interface (66) connected to an inlet of the outdoor heat exchanger (93) is further formed in the base (60), a second flow path (102) is further formed in the base (60), the indoor condenser outlet interface (67) is connected to the second flow path (102), an inlet of the first on-off valve (11) is connected to the second flow path (102), an inlet of the third on-off valve (13) is connected to the second flow path (102), and an outlet of the third on-off valve (13) is connected to the outdoor heat exchanger inlet interface (66).

4. 4. The valve group integration module according to claim 3, characterized in that, by conducting or blocking the first on-off valve (11) and conducting or blocking the third on-off valve (13), the refrigerant flowing from the indoor condenser outlet interface (67) to the second flow path (102) can flow into the first flow path (101) via the first on-off valve (11) or flow out from the outdoor heat exchanger inlet interface (66) via the third on-off valve (13).

5. The valve group integration module of claim 3, characterized in that the valve group further comprises a third expansion valve (23), a third flow path (103) is further formed in the base (60), the outdoor heat exchanger inlet interface (66) is connected to the third flow path (103), an outlet of the third on-off valve (13) is connected to the third flow path (103), an inlet of the third expansion valve (23) is connected to the second flow path (102), and an outlet of the third expansion valve (23) is connected to the third flow path (103).

6. The valve group integration module of claim 5, characterized in that by conducting or blocking the third on-off valve (13) and throttling or blocking the third expansion valve (23), the refrigerant flowing from the indoor condenser outlet interface (67) into the second flow path (102) can flow into the third flow path (103) via the third on-off valve (13) or flow into the third flow path (103) via the third expansion valve (23).

7. The base body (60) comprises a first separate body (40) and a second separate body (50), the first separate body (40) includes a first connecting surface (401), the second separate body (50) includes a second connecting surface (501), the first connecting surface (401) is hermetically connected to the second connecting surface (501), and the first connecting surface (401) is recessed inward to define a first groove (701), a second groove ( the second connecting surface (501) and the first groove (701) together define the first flow path (101), the second connecting surface (501) and the second groove (702) together define the second flow path (102), and the second connecting surface (501) and the third groove (703) together define the third flow path (103); The valve group integration module according to claim 5, characterized in that the first on-off valve (11), the second on-off valve (12), the third on-off valve (13), the first expansion valve (21), and the third expansion valve (23) are all provided in the first separate body (40), or the first on-off valve (11), the second on-off valve (12), the third on-off valve (13), the first expansion valve (21), and the third expansion valve (23) are all provided in the second separate body (50).

8. 8. The valve group integration module of claim 7, wherein at least one of the first groove (701), the second groove (702), and the third groove (703) is a curved groove.

9. 2. The valve group integration module of claim 1, further comprising: a fifth flow path (105) formed in the base (60); an outlet of the fourth on-off valve (14) is connected to the fifth flow path (105); the return flow inlet interface (62) is connected to the fifth flow path (105); and a battery pack heat exchanger outlet interface (61) for connecting to a refrigerant outlet of a battery pack heat exchanger (96) is further formed in the base (60), and the battery pack heat exchanger outlet interface (61) is connected to the fifth flow path (105).

10. 2. The valve group integration module of claim 1, further comprising a fifth flow path (105) formed in the base (60), an outlet of the fourth on-off valve (14) being connected to the fifth flow path (105), the return flow inlet interface (62) being connected to the fifth flow path (105), and an indoor evaporator outlet interface (63) for connecting to an outlet of an indoor evaporator (94) being further formed in the base (60), the indoor evaporator outlet interface (63) being connected to the fifth flow path (105).

11. 11. The valve group integration module of claim 10, further comprising a temperature sensor, wherein a first through hole (813), a second through hole (814) and a third through hole (815) are formed in the fifth flow path (105), the second through hole (814) is located between the first through hole (813) and the third through hole (815), the first through hole (813) is connected to the indoor evaporator outlet interface (63), and the third through hole (815) is connected to the return inlet interface (62), the temperature sensor (30) is provided in the base (60), and a detection end of the temperature sensor (30) is located in the fifth flow path (105) through the second through hole (814).

12. The base body (60) comprises a first separate body (40) and a second separate body (50), the first separate body (40) comprising a first connecting surface (401), the second separate body (50) comprising a second connecting surface (501), the first connecting surface (401) being sealingly connected to the second connecting surface (501), the first connecting surface (401) recessed inwardly to form a fourth groove (704) and a fifth groove (705), the second connecting surface (501) and the fourth groove (704) together defining the fourth flow path (104), the second connecting surface (501) and the fifth groove (705) together defining the fifth flow path (105), The valve group integration module according to claim 10, characterized in that the fourth on-off valve (14) is provided in the first separate body (40) or the second separate body (50).

13. 13. The valve group integration module of claim 12, wherein at least one of the fourth groove (704) and the fifth groove (705) is a curved groove.

14. A vehicle thermal management system comprising the valve group integration module according to claim 1 or 2.

15. A vehicle comprising the vehicle thermal management system of claim 14.

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