Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle, the thermal management system comprises a compressor, an evaporator, a condenser and a liquid storage device, the thermal management system also comprises a refrigerant channel, and the inner wall of the refrigerant channel is provided with a heat insulation solid layer. According to the thermal management system provided by the embodiment of the utility model, the thermal insulation effect of the refrigerant flow path can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal management technical field, especially thermal management system and vehicle. BACKGROUND

[0002] Under the background of global warming, R290 (propane) with superior environmental performance in the automobile thermal management system is widely used to replace the traditional R134a (1,1,1,2-tetrafluoroethane), but R290 has very intense flammability, therefore, the automobile thermal management system adopts a highly integrated scheme to maximize the reduction of R290 charge, reduce the risk of refrigerant leakage, and improve the safety of R290 in the use process of the automobile thermal management system. The high integration of components inevitably leads to heat transfer between high-temperature and low-temperature regions of the system. SUMMARY

[0003] One purpose of the utility model is to provide a thermal management system and vehicle. The heat insulation effect of the refrigerant flow path can be improved.

[0004] The thermal management system according to the embodiment of the utility model, comprising a compressor, an evaporator, a condenser and a liquid accumulator, the thermal management system further comprises a refrigerant channel, and the inner wall of the refrigerant channel is provided with a heat insulation solid layer.

[0005] The thermal management system according to the embodiment of the utility model can improve the heat insulation effect of the refrigerant flow path.

[0006] In addition, the thermal management system according to the above embodiment of the utility model can further have the following additional technical features:

[0007] In some embodiments, the outer wall surface of the heat insulation solid layer is coplanar with the inner wall of the refrigerant channel.

[0008] In some embodiments, a heat insulation gas layer is arranged between the heat insulation solid layer and the inner wall of the refrigerant channel.

[0009] In some embodiments, the heat insulation solid layer comprises a first heat insulation pipe, and the first heat insulation pipe is sleeved on the inner wall of the refrigerant channel.

[0010] In some embodiments, the outer wall surface of the heat insulation solid layer is provided with a first groove, and the inner wall of the refrigerant channel covers the first groove to form the heat insulation gas layer.

[0011] Alternatively, the inner wall surface of the refrigerant channel is provided with a second groove, and the heat insulation solid layer covers the second groove to form the heat insulation gas layer.

[0012] Or, the outer wall surface of the heat insulation solid layer is provided with a third groove, the inner wall surface of the refrigerant channel is provided with a fourth groove, and the third groove and the fourth groove cooperate to form the heat insulation gas layer.

[0013] In some embodiments, the outer wall surface of the heat insulation solid layer at both ends is in contact with the inner wall of the refrigerant channel; and / or, the outer wall surface of the first end of the heat insulation solid layer has a gap with the inner wall of the refrigerant channel; and / or, the outer wall surface of the second end of the heat insulation solid layer is coplanar with the inner wall of the refrigerant channel.

[0014] In some embodiments, the outer wall surface of the heat insulation solid layer at both ends has the same diameter size as the inner wall surface of the corresponding position of the inner wall of the refrigerant channel and is fixedly connected.

[0015] In some embodiments, the heat insulation solid layer has a first end, a second end, and a middle section arranged between the first end and the second end,

[0016] In some embodiments, the diameter size of the outer wall surface of the middle section is smaller than the diameter size of the outer wall surface of the first end; and / or, the diameter size of the outer wall surface of the middle section is smaller than the diameter size of the outer wall surface of the second end; and / or, the diameter size of the outer wall surface of the middle section is greater than the diameter size of the inner wall surface of the first end and the diameter size of the inner wall surface of the second end.

[0017] In some embodiments, the heat management system further comprises a second heat insulation pipe, the second heat insulation pipe comprises an inner layer pipe and an outer layer pipe arranged outside the inner layer pipe, the second heat insulation pipe is arranged in the inner wall of the refrigerant channel, the inner layer pipe is configured as the heat insulation solid layer, and the heat insulation gas layer is arranged between the inner layer pipe and the outer layer pipe.

[0018] In some embodiments, the inner side of the heat insulation solid layer is configured as a fluid channel, and the heat insulation gas layer is configured as an annular cavity arranged outside the fluid channel and surrounding the fluid channel.

[0019] In some embodiments, the heat insulation medium filled in the heat insulation gas layer is the same as the flow medium in the refrigerant channel; and / or, the heat insulation gas layer is in communication with the flow channel.

[0020] In some embodiments, the thermal conductivity of the heat insulation solid layer is not greater than 0.3 W / (m·K); and / or, the heat insulation gas layer is filled with a heat insulation medium; and / or, the heat insulation medium filled in the heat insulation gas layer is R290; and / or, the refrigerant medium in the refrigerant channel is R290.

[0021] In some embodiments, the heat insulation solid layer is configured as a pipe body coaxially distributed with an inner wall of the refrigerant passage; and / or the refrigerant passage is communicated with a suction port of the compressor and the evaporator.

[0022] In some embodiments, the heat insulation solid layer is configured as a sheet laminated inside an inner wall of the refrigerant passage.

[0023] In some embodiments, the refrigerant passage is arranged to pass through at least one of the compressor, the condenser, the liquid accumulator and the evaporator.

[0024] In some embodiments, the compressor comprises a high-pressure shell and a low-pressure shell, the low-pressure shell, the high-pressure shell, the condenser, the liquid accumulator and the evaporator are arranged along an axial direction of the compressor, and the refrigerant passage is arranged to pass through the low-pressure shell, the high-pressure shell, the condenser, the liquid accumulator and the evaporator.

[0025] In some embodiments, the evaporator comprises an outlet pipe, the refrigerant passage comprises a refrigerant interface and a flow passage body arranged along an axis, and the outlet pipe is arranged to pass through the refrigerant interface.

[0026] In some embodiments, a diameter of an inner wall surface of the refrigerant interface is greater than a diameter of an inner wall surface of the flow passage body; and / or a radial dimension of an inner wall surface of the outlet pipe is greater than or equal to a radial dimension of the inner wall surface of the flow passage body.

[0027] The vehicle according to an embodiment of the present application comprises the thermal management system. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present application.

[0029] Figure 2 FIG. 2 is a schematic diagram of a thermal management system according to another embodiment of the present application.

[0030] Figure 3 FIG. 3 is a schematic diagram of a thermal management system according to still another embodiment of the present application.

[0031] Figure 4 FIG. 4 is a comparative schematic diagram of total heat transfer thermal resistance of thermal management systems according to different embodiments.

[0032] REFERENCE SIGNS:

[0033] Thermal management system 100, refrigerant passage 101, heat insulation solid layer 12, first end 121, second end 122, middle section 123, heat insulation gas layer 13, compressor 20, low-pressure shell 21, high-pressure shell 22, condenser 30, liquid accumulator 40, evaporator 50, outlet pipe 51. DETAILED DESCRIPTION

[0034] In the heat management system of the utility model, the low-temperature and low-pressure gas-phase or two-phase refrigerant leaves the evaporator outlet and enters the compressor suction port through the refrigerant channel. In the refrigerant channel, the refrigerant exchanges heat with the high-temperature wall surface of the liquid accumulator, the condenser, the high-pressure shell and the low-pressure shell of the compressor respectively. This part of heat cannot be used by the user and belongs to invalid heat exchange, which increases the suction port refrigerant superheat degree and reduces the suction mass flow, significantly affecting the performance of the system. Therefore, a heat insulation structure needs to be proposed for the refrigerant channel of the integrated heat management system.

[0035] The heat management system of the related art has not implemented effective heat insulation measures for the refrigerant channel, but the invalid heat exchange between the low-temperature and low-pressure refrigerant in the refrigerant channel and the high-temperature wall surface cannot be ignored, especially in the EVtest working condition, the invalid heat exchange of the refrigerant in the refrigerant channel may account for about 10% of the total heat exchange. In the low-temperature heat pump working condition, the higher exhaust temperature caused by the greater suction superheat degree will significantly limit the Max capacity of the system. In summary, the invalid heat exchange between the suction flow and the high-temperature wall surface of the refrigerant will significantly affect the performance of the system. Therefore, the utility model provides a heat management system.

[0036] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0037] As Figures 1 to 4 According to the heat management system 100 of the utility model embodiment, the heat management system 100 comprises a compressor 20, an evaporator 50, a condenser 30 and a heat accumulator. The heat management system 100 further comprises a refrigerant channel 101, and the inner wall of the refrigerant channel 101 is provided with a heat insulation solid layer 12. The compressed refrigerant of the compressor 20 flows through the condenser 30, the liquid accumulator 40 and the evaporator 50 in turn and then returns to the compressor 20, and the refrigerant can flow along the flow channel to form a circulating flow path of the refrigerant, realize refrigeration and heating by using the phase change of the refrigerant, and realize heat management. The inner wall of the refrigerant channel 101 is provided with the flow channel heat insulation solid layer 12, which can separate the refrigerant channel 101 from other channels to realize cold and heat isolation, and the heat insulation solid layer 12 can be arranged on the inner side of the inner wall of the refrigerant channel 101.

[0038] According to the heat management system 100, the heat insulation solid layer 12 is used to realize heat insulation between the flow channel and the external pipeline, improve the thermal resistance, reduce the invalid heat exchange, and improve the heat insulation effect of the refrigerant flow channel, thereby optimizing the performance of the heat management system 100.

[0039] In some embodiments, the outer wall surface of the heat insulation solid layer 12 is coplanar with the inner wall of the refrigerant channel 101. Figure 1

[0040] In some embodiments, the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101 can further be provided with a heat insulation gas layer 13. Figure 2

[0041] The cooperation between the heat insulation solid layer 12 and the refrigerant channel 101 in the utility model can include but is not limited to the following implementation manners.

[0042] Implementation manner one

[0043] The heat insulation solid layer 12 includes a first heat insulation pipe, and the first heat insulation pipe is sleeved on the inner wall of the refrigerant channel 101. Figure 2

[0044] The formation manner of the heat insulation gas layer 13 between the first heat insulation pipe and the inner wall of the refrigerant channel 101 can include but is not limited to the following examples.

[0045] ​​​In the first example, the outer wall surface of the heat insulation solid layer 12 is provided with a first groove, and the inner wall of the refrigerant channel 101 covers the first groove to form the heat insulation gas layer 13. The heat insulation gas layer 13 can be conveniently formed between the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101, and the forming mode of the heat insulation gas layer 13 is simplified. In addition, by providing the first groove on the heat insulation solid layer 12, the forming mode of the first groove can be simplified, and the processing and forming of the first groove are facilitated. In addition, the structural strength of the inner wall of the refrigerant channel 101 can also be maintained. The heat insulation solid layer 12 support can also be installed on the inner side of the inner wall of the refrigerant channel 101 of the existing product, and will not have a great influence on the shape of the inner wall of the refrigerant channel 101, thereby simplifying the design and production.

[0046] In the second example, the inner wall surface of the refrigerant channel 101 is provided with a second groove, and the heat insulation solid layer 12 covers the second groove to form the heat insulation gas layer 13. The heat insulation gas layer 13 can be conveniently formed between the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101, and the forming mode of the heat insulation gas layer 13 is simplified. In addition, by providing the second groove on the inner wall of the refrigerant channel 101, the processing and forming of the heat insulation solid layer 12 can be facilitated. In addition, the structural strength of the heat insulation solid layer 12 can also be maintained.

[0047] In the third example, the outer wall surface of the heat insulation solid layer 12 is provided with a third groove, the inner wall surface of the refrigerant channel 101 is provided with a fourth groove, and the third groove and the fourth groove cooperate to form the heat insulation gas layer 13. The heat insulation gas layer 13 with a larger thickness size can be conveniently formed between the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101, so as to further improve the thermal resistance.

[0048] Through the above examples, the heat insulation gas layer 13 can be conveniently formed between the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101, and the structure of the heat insulation solid layer 12 is simplified. Of course, the forming mode of the heat insulation gas layer 13 in the present application can also be other modes, and the above description is not a limitation on the protection scope of the present application.

[0049] In addition, the cooperation relationship between the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101 can include but is not limited to the following examples.

[0050] In the first example, the outer wall surfaces at both ends of the heat insulation solid layer 12 are in contact with the inner wall of the refrigerant channel 101. In order to utilize the contact to achieve effective positioning of the heat insulation solid layer 12, avoid loosening and displacement of the heat insulation solid layer 12 during transportation and use, and ensure the heat insulation effect.

[0051] Example two, the outer wall surface of the first end 121 of the heat insulation solid layer 12 has a gap with the inner wall of the refrigerant channel 101. The refrigerant in the flow channel can be conveniently introduced into the heat insulation gas layer 13, the gas in the heat insulation gas layer 13 can be conveniently filled, and the refrigerant can be directly used for heat insulation. In addition, the gas leakage of the heat insulation gas layer 13 can also avoid affecting the concentration of the refrigerant in the flow channel. In addition, the problem of filling gas into the heat insulation gas layer 13 can also be avoided.

[0052] Example three, the outer wall surface of the second end 122 of the heat insulation solid layer 12 is coplanar with the inner wall surface of the refrigerant channel 101. The gas flow in the heat insulation gas layer 13 can be slowed down, so as to improve the thermal resistance and heat insulation effect of the heat insulation gas layer 13. In combination with example two, the refrigerant can enter the heat insulation gas layer 13 from the first end 121 of the heat insulation solid layer 12. The refrigerant entering the heat insulation gas layer 13 is difficult to discharge through the second end of the heat insulation solid layer 12, so as to maintain the refrigerant in the heat insulation gas layer 13 in a relatively stable state, and improve the heat insulation effect.

[0053] In addition, the heat insulation solid layer 12 can also include but is not limited to the following technical features.

[0054] Feature one, the outer wall surface diameters of the two ends of the heat insulation solid layer 12 are the same as the inner wall surface diameters of the corresponding positions of the inner wall of the refrigerant channel 101 and are fixedly connected. In order to stably connect the heat insulation solid layer 12 and the inner wall of the refrigerant channel 101, and realize the stable positioning of the heat insulation solid layer 12. Avoid loosening and displacement of the heat insulation solid layer 12 during transportation and use, and ensure the heat insulation effect.

[0055] Feature two, the heat insulation solid layer 12 has a first end 121, a second end 122, and an intermediate section 123 arranged between the first end 121 and the second end 122. The outer wall surface diameter of the intermediate section 123 can be smaller than the outer wall surface diameter of the first end 121; the outer wall surface diameter of the intermediate section 123 can be smaller than the outer wall surface diameter of the second end 122; or the outer wall surface diameter of the intermediate section 123 can be smaller than the outer wall surface diameter of the first end 121, and the outer wall surface diameter of the intermediate section 123 can be smaller than the outer wall surface diameter of the second end 122. In order to facilitate the cooperation of the first end 121 and / or the second end 122 of the heat insulation solid layer 12 with the inner wall of the refrigerant channel 101, realize the stable installation of the heat insulation solid layer 12, and ensure that the intermediate section 123 and the inner wall of the refrigerant channel 101 form a relatively stable gap, thereby forming a stable heat insulation gas layer 13, and improving the heat insulation effect and stability.

[0056] Embodiment two

[0057] In some embodiments, the heat management system 100 further comprises a second heat insulation pipe, the second heat insulation pipe comprises an inner pipe and an outer pipe arranged outside the inner pipe, the second heat insulation pipe is arranged in the inner wall of the refrigerant channel 101, the inner pipe is configured as the heat insulation solid layer 12, and the heat insulation gas layer 13 is arranged between the inner pipe and the outer pipe. The heat insulation gas layer 13 can be arranged in the second heat insulation pipe, and the second heat insulation pipe can be directly arranged in the inner wall of the refrigerant channel 101 during installation, so that the assembly can be simplified. The cooperation mode between the inner pipe and the outer pipe can refer to the cooperation structure between the first heat insulation pipe and the inner wall of the refrigerant channel 101.

[0058] It should be noted that the above embodiments are only some examples of the present application, and are not a limitation of the present application. For example, the combination of the above embodiments is also within the protection scope of the present application. In addition, the present application can also include the following technical solutions.

[0059] As Figure 2 In some embodiments, the inner side of the heat insulation solid layer 12 is configured as a fluid channel, and the heat insulation gas layer 13 is configured as an annular cavity arranged outside the fluid channel and surrounding the fluid channel. The annular cavity can be used to achieve heat insulation of the outer periphery of the fluid channel, thereby improving the heat insulation effect of the flow channel.

[0060] Optionally, the heat insulation medium filled in the heat insulation gas layer 13 is the same as the flow medium in the refrigerant channel 101. The heat insulation gas layer 13 can be arranged as a communication flow channel. The refrigerant in the flow channel can be conveniently introduced into the heat insulation gas layer 13, the heat insulation gas layer 13 can be conveniently filled with gas, and the refrigerant can be directly used for heat insulation, which can also avoid the gas leakage of the heat insulation gas layer 13 affecting the concentration of the refrigerant in the flow channel. In addition, the difficulty of filling gas into the heat insulation gas layer 13 can also be avoided.

[0061] In some embodiments, the thermal conductivity of the heat insulation solid layer 12 is not greater than 0.3 W / (m·K); and / or, the heat insulation gas layer 13 is filled with a heat insulation medium; and / or, the heat insulation medium filled in the heat insulation gas layer 13 is R290; and / or, the refrigerant medium in the refrigerant channel 101 is R290.

[0062] According to the heat management system 100 of the embodiment of the utility model, two kinds of flow channel heat insulation schemes are provided, scheme one is to embed a heat insulation solid layer 12 in the refrigerant channel 101, the outer wall surface of the heat insulation solid layer 12 and the inner wall surface of the flow channel are equal in diameter and are fixed by friction force, scheme two is the structure of heat insulation solid layer 12 + heat insulation gas layer 13 proposed in the present disclosure, compared with the structure without heat insulation, the total thermal resistance of the structure of the heat insulation pipe embedded in the refrigerant channel 101 of scheme one is increased by about 4.6 times, the total thermal resistance of the structure of the heat insulation pipe + heat insulation gas layer 13 proposed in the utility model is increased by about 68 times, the invalid heat exchange amount between the low-temperature refrigerant in the refrigerant channel 101 and the high-temperature wall surface can be greatly reduced, and the system performance is improved. The above can indicate that the technical scheme of the utility model has high reliability in the suction heat insulation of the heat management system 100.

[0063] The technical scheme proposed in the present disclosure can be used in the refrigerant channel 101 of the integrated heat management system 100.

[0064] It should be noted that the heat insulation structure inlet is communicated with the outlet of the evaporator 50, the outer wall surface diameter of the inlet and outlet of the heat insulation solid layer 12 is equal to the inner wall surface diameter of the refrigerant channel 101, can adopt the interference fit mode to be fixed, at the same time, the outer wall surface diameter of the middle section 123 between the inlet and outlet of the heat insulation solid layer 12 is less than the outer wall surface diameter of the inlet of the heat insulation solid layer 12 and is greater than the inner wall surface diameter of the inlet of the heat insulation solid layer 12, the structure surrounded between the heat insulation pipe and the inner wall surface of the refrigerant channel 101 is the heat insulation gas layer 13.

[0065] In addition, as Figures 1 to 3 The first heat insulation pipe in the utility model can be configured as a pipe body coaxially distributed with the refrigerant channel 101, so that uniform heat insulation between the internal space of the first heat insulation pipe and the external space of the inner wall of the refrigerant channel 101 can be realized, so as to improve the heat insulation effect of the refrigerant in the flow channel. Of course, the first heat insulation pipe in the utility model and the inner wall of the refrigerant channel 101 can also be in a non-coaxial form to target heat insulation.

[0066] Optionally, the refrigerant channel 101 is communicated with the suction port of the compressor 20 and the evaporator 50. After the compressor 20 compresses the refrigerant, the refrigerant sequentially flows through the condenser 30, the liquid accumulator 40 and the evaporator 50, and then flows back to the compressor 20 through the refrigerant channel 101, the refrigerant can flow through the flow channel to form a circulating flow path of the refrigerant, and refrigeration and heating are realized by using the phase change of the refrigerant to realize heat management. Of course, the refrigerant channel 101 can also be arranged at other positions, for example, the refrigerant channel 101 is arranged between the compressor 20 and the condenser 30.

[0067] In some embodiments, the heat insulation solid layer 12 is provided in a sheet shape and is laminated to the inner side of the inner wall of the refrigerant passage 101. The heat insulation solid layer 12 can be used in cooperation with the inner wall of the refrigerant passage 101 to achieve regional heat insulation of the flow channel, so as to facilitate the effect of point heat insulation, simplify the structure, and achieve effective heat insulation and heat preservation of a specific region, and optimize the performance.

[0068] In combination with the foregoing embodiments, the sheet-shaped heat insulation solid layer 12 can be coplanar with the inner wall of the refrigerant passage 101, or a heat insulation gas layer 13 can be arranged between the sheet-shaped heat insulation solid layer 12 and the refrigerant passage 101.

[0069] Optionally, the refrigerant passage 101 is arranged through at least one of the compressor 20, the condenser 30, the liquid accumulator 40, and the evaporator 50. For example, the evaporator 50 can have a fifth flow channel portion, and / or the liquid accumulator 40 can have a fourth flow channel portion, and / or the condenser 30 can have a third flow channel portion, and / or the compressor 20 can have a flow channel portion. Optionally, the compressor 20 can include a high-pressure shell 22 and a low-pressure shell 21, the high-pressure shell 22 having a second flow channel portion, and the low-pressure shell 21 having a first flow channel portion. In this way, the volume of the heat management system 100 can be reduced, and in addition, when at least a portion of the refrigerant passage 101 is integrated into at least one of the compressor 20, the condenser 30, the liquid accumulator 40, and the evaporator 50, the heat insulation structure in the present application can further reduce the ineffective heat exchange.

[0070] Optionally, the compressor 20 includes a high-pressure shell 22 and a low-pressure shell 21. Specifically, the compressor 20 includes a high-pressure shell 22 and a low-pressure shell 21, and the compressed refrigerant in the high-pressure shell 22 sequentially flows through the condenser 30, the liquid accumulator 40, and the evaporator 50, and then flows back to the low-pressure shell 21 through the refrigerant passage 101.

[0071] In other embodiments, the compressor 20 includes a high-pressure shell 22 and a low-pressure shell 21, the liquid accumulator 40 has a fourth flow channel portion, the condenser 30 has a third flow channel portion, the high-pressure shell 22 has a second flow channel portion, and the low-pressure shell 21 has a first flow channel portion. The fourth flow channel portion, the third flow channel portion, the second flow channel portion, and the first flow channel portion are sequentially communicated, and the heat insulation solid layer 12 is arranged through one flow channel or at least two adjacent flow channels of the fourth flow channel portion, the third flow channel portion, the second flow channel portion, and the first flow channel portion.

[0072] In some embodiments, the low-pressure shell 21, the high-pressure shell 22, the condenser 30, the liquid accumulator 40 and the evaporator 50 are distributed along the axial direction of the compressor 20, and the refrigerant channel 101 passes through the low-pressure shell 21, the high-pressure shell 22, the condenser 30, the liquid accumulator 40 and the evaporator 50. By the above arrangement, the entire refrigerant channel 101 can be insulated by the insulating gas layer 13 and the insulating solid layer 12, the insulation effect of the refrigerant return channel is optimized, and the performance of the thermal management system 100 is improved.

[0073] The evaporator 50 can be connected with the refrigerant channel 101, and the evaporator 50 includes an outlet pipe 51, and the refrigerant channel 101 includes a refrigerant interface and a flow passage body distributed along the axis, and the outlet pipe 51 passes through the refrigerant interface. The outlet pipe 51 and the refrigerant interface can be stably matched by cooperation, facilitating assembly, and improving the stability and assembly efficiency of the thermal management system 100.

[0074] Optionally, the diameter of the inner wall surface of the refrigerant interface is greater than the diameter of the inner wall surface of the flow passage body, and / or the radial dimension of the inner wall surface of the outlet pipe 51 is greater than or equal to the radial dimension of the inner wall surface of the flow passage body. The outlet pipe 51 and the refrigerant interface can be quickly assembled.

[0075] The utility model also provides a vehicle which comprises the foregoing thermal management system 100.

[0076] Some specific embodiments of the utility model will be described below with reference to the drawings.

[0077] As Figures 1 to 4 The thermal management system 100 of the utility model includes an evaporator 50, a liquid accumulator 40, a condenser 30, a high-pressure shell 22 of a compressor 20 and a low-pressure shell 21 of the compressor 20.

[0078] The outlet pipe 51 of the evaporator 50 is connected with the inlet of the fourth flow passage part, the outlet of the fourth flow passage part is connected with the inlet of the third flow passage part, the outlet of the third flow passage part is connected with the inlet of the second flow passage part, and the outlet of the second flow passage part is connected with the inlet of the first flow passage part.

[0079] The heat management system 100 comprises a heat insulation solid layer 12, a heat insulation gas layer 13 and a refrigerant passage 101. The heat insulation solid layer 12 is a hollow cylinder, which is coaxial with the inner wall of the refrigerant passage 101, and the outer wall surface of the inlet and outlet of the heat insulation solid layer 12 is in contact with the solid wall surface of the refrigerant passage 101. The first flow channel, the second flow channel, the third flow channel and the fourth flow channel are sequentially communicated along the axial direction and form the refrigerant passage 101, and the heat insulation solid layer 12 is arranged in the first flow channel, the second flow channel, the third flow channel and the fourth flow channel. The inlet of the heat insulation solid layer 12 is communicated with the outlet of the evaporator 50, and the outlet of the heat insulation solid layer 12 is coplanar with the outlet of the fourth flow channel.

[0080] The diameter of the outer wall surface of the inlet and outlet of the heat insulation solid layer 12 is equal to the inner diameter of the refrigerant passage 101, and is connected and fixed with the inner wall of the refrigerant passage 101. When the two solid wall surfaces are pressed, the friction generated between the two solid wall surfaces can fix the heat insulation material. The diameter of the outer wall surface of the middle section 123 between the first end 121 (flow channel inlet) and the second end 122 (flow channel outlet) of the heat insulation solid layer 12 is smaller than the diameter of the outer wall surface of the first end 121 and larger than the diameter of the inner wall surface of the first end 121. The structure surrounded by the heat insulation solid layer 12 and the solid wall surface of the refrigerant passage 101 is the heat insulation gas layer 13.

[0081] The heat insulation solid layer 12 needs to have excellent chemical corrosion resistance, high temperature resistance, low friction coefficient and good electrical insulation performance, and needs to have a thermal conductivity of less than 0.3 W / (m·K). The heat insulation gas layer 13 is the refrigerant gas filled in the heat management system 100.

[0082] The application provides a heat management system 100, which relates to the technical field of automobile heat management and comprises an evaporator 50, a liquid accumulator 40, a condenser 30, a high-pressure shell 22, a low-pressure shell 21, an outlet pipeline 51, a wall of a refrigerant passage 101, a heat insulation gas layer 13 and a heat insulation solid layer 12. The evaporator 50, the liquid accumulator 40, the condenser 30, the high-pressure shell 22 of the compressor 20 and the low-pressure shell 21 of the compressor 20 jointly form the refrigerant passage 101 of the heat management system 100, and the suction heat insulation structure is arranged in the refrigerant passage 101. The inlet of the heat insulation solid layer 12 is communicated with the outlet pipeline 51 of the evaporator 50, the outer wall surface near the inlet and the outlet of the heat insulation solid layer 12 is in contact with the solid wall surface of the refrigerant passage 101, and the structure surrounded by the heat insulation solid layer 12 and the solid wall surface of the refrigerant passage 101 is the heat insulation gas layer 13. The application can effectively reduce the invalid heat exchange between the low-temperature and low-pressure refrigerant at the outlet of the evaporator 50 in the integrated heat management system 100 and the high-temperature solid wall surface in the refrigerant passage 101, reduce the superheat degree of the suction refrigerant of the compressor 20, and improve the performance of the integrated heat management system 100.

[0083] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0084] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0085] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0086] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0087] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0088] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A thermal management system (100) comprising a compressor (20), an evaporator (50), a condenser (30), and a reservoir (40), characterized in that, The heat management system (100) further comprises a refrigerant passage (101), an inner wall of the refrigerant passage (101) is provided with a heat insulation solid layer (12).

2. The thermal management system (100) of claim 1, wherein, An outer wall surface of the heat insulation solid layer (12) is coplanar with an inner wall of the refrigerant passage (101).

3. The thermal management system (100) of claim 1, wherein, A heat insulation gas layer (13) is arranged between the heat insulation solid layer (12) and the inner wall of the refrigerant passage (101).

4. The thermal management system (100) of claim 3, characterized in that The heat insulation solid layer (12) comprises a first heat insulation pipe, the first heat insulation pipe is sleeved on the inner wall of the refrigerant passage (101).

5. The thermal management system (100) of claim 4, characterized in that An outer wall surface of the heat insulation solid layer (12) is provided with a first groove, the inner wall of the refrigerant passage (101) covers the first groove to form the heat insulation gas layer (13). Or, an inner wall surface of the refrigerant passage (101) is provided with a second groove, the heat insulation solid layer (12) covers the second groove to form the heat insulation gas layer (13). Or, an outer wall surface of the heat insulation solid layer (12) is provided with a third groove, an inner wall surface of the refrigerant passage (101) is provided with a fourth groove, the third groove and the fourth groove cooperate to form the heat insulation gas layer (13).

6. The thermal management system (100) of claim 4, wherein, An outer wall surface of both ends of the heat insulation solid layer (12) is in contact with the inner wall of the refrigerant passage (101); and / or, there is a gap between an outer wall surface of a first end (121) of the heat insulation solid layer (12) and the inner wall of the refrigerant passage (101); and / or, an outer wall surface of a second end (122) of the heat insulation solid layer (12) is coplanar with the inner wall of the refrigerant passage (101).

7. The thermal management system (100) of claim 4, wherein, The diameter size of the outer wall surface of both ends of the heat insulation solid layer (12) is the same as the diameter size of the inner wall surface of the corresponding position of the inner wall of the refrigerant passage (101) and is fixedly connected.

8. The thermal management system (100) of claim 4, wherein, The heat insulation solid layer (12) has a first end (121), a second end (122) and an intermediate section (123) arranged between the first end (121) and the second end (122), wherein the diameter size of the outer wall surface of the intermediate section (123) is smaller than the diameter size of the outer wall surface of the first end (121); and / or, the diameter size of the outer wall surface of the intermediate section (123) is smaller than the diameter size of the outer wall surface of the second end (122); and / or, the diameter size of the outer wall surface of the intermediate section (123) is larger than the diameter size of the inner wall surface of the first end (121) and the diameter size of the inner wall surface of the second end (122).

9. The thermal management system (100) of claim 3, wherein, The heat management system (100) further comprises a second heat insulation pipe, the second heat insulation pipe comprises an inner layer pipe and an outer layer pipe arranged outside the inner layer pipe, the second heat insulation pipe is arranged in the inner wall of the refrigerant passage (101), the inner layer pipe is configured as the heat insulation solid layer (12), and the heat insulation gas layer (13) is arranged between the inner layer pipe and the outer layer pipe.

10. The thermal management system (100) of claim 3, wherein, An inner side of the heat insulation solid layer (12) is configured as a fluid passage, and the heat insulation gas layer (13) is configured as an annular cavity arranged outside the fluid passage and surrounding the fluid passage.

11. The thermal management system (100) of claim 3, wherein, The heat insulation gas layer (13) is filled with a heat insulation medium which is the same as the flow-through medium in the refrigerant channel (101); and / or, the heat insulation gas layer (13) is communicated with the refrigerant channel (101).

12. The thermal management system (100) of claim 3, wherein, The heat conductivity of the heat insulation solid layer (12) is not greater than 0.3 W / (m·K); and / or, the heat insulation gas layer (13) is filled with a heat insulation medium; and / or, the heat insulation medium filled in the heat insulation gas layer (13) is R290; and / or, the refrigerant medium in the refrigerant channel (101) is R290.

13. The thermal management system (100) according to any one of claims 1-12, characterized by, The heat insulation solid layer (12) is configured as a pipe body coaxially distributed with the refrigerant channel (101). And / or, the refrigerant channel (101) is communicated with the suction port of the compressor (20) and the evaporator (50).

14. The thermal management system (100) of claim 1 or 2, characterized by The heat insulation solid layer (12) is provided as a sheet laminated on the inner side of the inner wall of the refrigerant channel (101).

15. The thermal management system (100) of claim 1, wherein, The refrigerant channel (101) penetrates at least one of the compressor (20), the condenser (30), the liquid accumulator (40) and the evaporator (50).

16. The thermal management system (100) of claim 15, characterized by The compressor (20) comprises a high-pressure shell (22) and a low-pressure shell (21), the low-pressure shell (21), the high-pressure shell (22), the condenser (30), the liquid accumulator (40) and the evaporator (50) are distributed along the axial direction of the compressor (20), and the refrigerant channel (101) penetrates the low-pressure shell (21), the high-pressure shell (22), the condenser (30), the liquid accumulator (40) and the evaporator (50).

17. The thermal management system (100) of claim 1, wherein, The evaporator (50) comprises an outlet pipe (51), the refrigerant channel (101) comprises a refrigerant interface and a flow channel body distributed along the axis, and the outlet pipe (51) penetrates the refrigerant interface.

18. The thermal management system (100) of claim 17, characterized by The diameter size of the inner wall surface of the refrigerant interface is greater than the diameter size of the inner wall surface of the flow channel body; and / or, the radial size of the inner wall surface of the outlet pipe (51) is greater than or equal to the radial size of the inner wall surface of the flow channel body.

19. A vehicle characterized by comprising: The heat management system (100) of any one of claims 1-18.

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