Heat exchanger, heat management system and vehicle

Abstract

The utility model discloses a heat exchanger, a heat management system and a vehicle. The heat exchanger comprises a first header and a second header, wherein the first header is provided with a first inner cavity; the second header is provided with a second inner cavity; the second header is arranged in the first inner cavity of the first header, and a first gap is formed between the outer wall of the second header and the inner wall of the first header; the first gap is used for circulating a first cooling medium, and the second inner cavity is used for circulating a second cooling medium. In this way, the first cooling medium and the second cooling medium can conduct sufficient heat exchange, so that heat absorbed by the heat exchanger from air is reduced, and frosting on the surface of the heat exchanger is delayed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicles, and particularly relates to a heat exchanger, a thermal management system and a vehicle. BACKGROUND

[0002] In the aspect of thermal management systems of new energy vehicles, the thermal management system mainly includes three-electricity thermal management and an air conditioning system. Compared with traditional fuel vehicles, three-electricity thermal management is a newly added system, and the thermal management of a traditional engine and a gearbox is changed into the thermal management of a battery, a motor and an electric control. At present, due to the development of battery technology and the short board of endurance mileage, energy saving and high efficiency of the air conditioning system become important considerations.

[0003] The outside heat exchanger in the heat pump system of a new energy vehicle is used as an evaporator in a heating mode in winter. When the ambient temperature is low, water vapor in the air is easy to condense on the surface of the heat exchanger and then frost, the frost layer increases the thermal resistance of the heat exchanger and blocks the air flow channel, so that the air flow through the heat exchanger is attenuated, thereby causing the heat exchange amount of the heat exchanger to be seriously attenuated. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the utility model provide a heat exchanger, a thermal management system and a vehicle, which improve the temperature of the heat exchanger at low temperature and delay frosting on the surface of the heat exchanger.

[0005] In order to solve the above technical problems, the application is implemented as follows:

[0006] Embodiments of the application provide a heat exchanger, which comprises:

[0007] A first header tank, the first header tank has a first inner cavity;

[0008] A second header tank, the second header tank has a second inner cavity;

[0009] The second header tank is arranged in the first inner cavity of the first header tank, and a first gap is formed between the outer wall of the second header tank and the inner wall of the first header tank; the first gap is used for flowing a first cooling medium, and the second inner cavity is used for flowing a second cooling medium.

[0010] Optionally, the heat exchanger comprises a first heat exchange pipe;

[0011] The first heat exchange pipe is provided with a plurality of sub-flow channels, at least one of the plurality of sub-flow channels is in communication with the first header tank, and the remaining sub-flow channels of the plurality of sub-flow channels are respectively in communication with the second header tank.

[0012] Optionally, two first headers are provided; two ends of at least one of the plurality of sub-flow channels are in communication with one of the first headers respectively, and two ends of the rest of the plurality of sub-flow channels are in communication with one of the second headers respectively.

[0013] Optionally, the sub-flow channels are arranged in parallel along a first direction, and the sub-flow channels in communication with the first headers are arranged on the same side of the rest of the sub-flow channels.

[0014] Optionally, the first heat exchange tube comprises a through cavity and a partition plate.

[0015] The through cavity extends along a second direction intersecting the first direction; the partition plate is arranged in the through cavity, the partition plate is provided with at least two and is arranged in intervals along the first direction, and separates the through cavity into a plurality of sub-flow channels.

[0016] Optionally, along the second direction, the end of the sub-flow channel in communication with the second header protrudes from the end of the rest of the sub-flow channels; the end of the sub-flow channel in communication with the second header penetrates into the first header.

[0017] Optionally, along the second direction, the ends of all the sub-flow channels are flush; along the second direction, one of the partition plates is flush with one side wall of the second header.

[0018] Optionally, the heat exchanger comprises a second heat exchange tube and a third heat exchange tube.

[0019] The second heat exchange tube is provided with at least two, and at least two of the second heat exchange tubes are in communication with the second header, and the third heat exchange tube is in communication with the first header.

[0020] Optionally, the second heat exchange tube and the third heat exchange tube are arranged in parallel along a first direction, and the second heat exchange tube is arranged on the same side of the third heat exchange tube.

[0021] The first inner cavity comprises a first part and a second part, the first part and the second part are located on two sides of the second header along the first direction respectively; along the first direction, the size of the first part is larger than the size of the second part; the third heat exchange tube is opposite to and in communication with the first part.

[0022] Optionally, the outer wall of the second header is provided with a rib plate, and the rib plate extends along the radial direction of the second header.

[0023] Optionally, the rib plate is provided with a plurality of rib plates, and the plurality of rib plates are arranged uniformly around the second header.

[0024] Optionally, the rib plate comprises at least one of a flat plate, a corrugated plate, and a slotted plate.

[0025] Optionally, fins are arranged on the outer side wall of the first heat exchange pipe and / or the second heat exchange pipe.

[0026] Optionally, the heat exchanger comprises a first inflow pipe, a second inflow pipe, a first outflow pipe, and a second outflow pipe.

[0027] The first inflow pipe and the first outflow pipe are respectively in communication with one of the first headers; the second inflow pipe and the second outflow pipe respectively pass through one of the first headers and are respectively in communication with the second header in the first header that is passed through.

[0028] The first inflow pipe is used for the first cooling medium to flow in, and the first outflow pipe is used for the first cooling medium to flow out; the second inflow pipe is used for the second cooling medium to flow in, and the second outflow pipe is used for the second cooling medium to flow out; the first cooling medium and the second cooling medium are different in temperature.

[0029] The application also provides a heat management system comprising any one of the foregoing heat exchangers.

[0030] Optionally, the heat management system further comprises an internal heat exchanger, an expansion valve, a compressor, and a four-way reversing valve.

[0031] One of the first gap and the second inner cavity of the heat exchanger is in communication with a first port of the expansion valve; the same one of the first gap and the second inner cavity of the heat exchanger is in communication with one port of the four-way reversing valve; a second port of the expansion valve is in communication with a first port of the internal heat exchanger; the remaining ports of the four-way reversing valve are respectively in communication with a second port of the internal heat exchanger, an input port of the compressor, and an output port of the compressor.

[0032] Optionally, the heat management system further comprises a first heat sink adapted to exchange heat with an engine.

[0033] The other one of the first gap and the second inner cavity of the heat exchanger is in communication with the first heat sink.

[0034] Optionally, the heat management system further comprises a second heat sink adapted to exchange heat with at least one of an electric machine, an electronic control device, and a charger.

[0035] The other one of the first gap and the second inner cavity of the heat exchanger is in communication with the second heat sink.

[0036] The application also provides a vehicle comprising the heat exchanger or the heat management system as described above.

[0037] In the vehicle external heat exchanger, the first header has a first inner cavity, and the second header has a second inner cavity. The second header is arranged in the first inner cavity of the first header, and the outer wall of the second header is arranged in a spaced manner with the inner wall of the first header. The first inner cavity is used for flowing the first cooling medium, and the second inner cavity is used for flowing the second cooling medium. Since the second header is arranged in the first inner cavity of the first header, the first cooling medium flowing in the first inner cavity and the second cooling medium flowing in the second inner cavity can exchange heat, so that the first cooling medium and the second cooling medium do not need to absorb a large amount of heat from the external environment. In this way, the degree of frosting on the surface of the heat exchanger can be reduced, and even frosting on the surface of the heat exchanger can be avoided.

[0038] Additional aspects and advantages of the application will be described in the following description, become apparent from the following description, or be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a front view of the heat exchanger in an embodiment of the application;

[0040] Figure 2 is a structural schematic view of cooperation of the first header, the second header and the first heat exchange pipe in an embodiment of the application;

[0041] Figure 3 is a structural schematic view of cooperation of the first header, the second header and the first heat exchange pipe in an embodiment of the application;

[0042] Figure 4 is a three-dimensional view of the first heat exchange pipe in an embodiment of the application;

[0043] Figure 5 is a front view of the heat exchanger in an embodiment of the application;

[0044] Figure 6 is a structural schematic view of cooperation of the first header, the second header, the second heat exchange pipe and the third heat exchange pipe in an embodiment of the application;

[0045] Figure 7 is a structural schematic view of cooperation of the second header and the rib plate in an embodiment of the application (corresponding to Figure 2 );

[0046] Figure 8 is a structural schematic view of cooperation of the second header and the rib plate in an embodiment of the application (corresponding to Figure 3 );

[0047] Figure 9 is a structural schematic diagram of a heat management system in an embodiment of the present application.

[0048] Marker explanation:

[0049] 100, heat exchanger; 101, first header; 1011, first inner cavity; 1011a, first gap; 1011b, first part; 1011c, second part; 102, second header; 1021, second inner cavity; 1022, arc-shaped part; 1023, flat part; 103, first heat exchange pipe; 103a, sub-flow passage; 1031, through cavity; 1032, partition; 104, second heat exchange pipe; 105, third heat exchange pipe; 106, rib plate; 107, fin; 108, first inflow pipe; 109, second inflow pipe; 110, first outflow pipe; 111, second outflow pipe; 200, internal heat exchanger; 300, expansion valve; 400, compressor; 500, four-way valve; 600, first radiator; 700, second radiator; 800, in-vehicle condenser; 900, first regulating valve; 1000, second regulating valve; 1100, stop valve; 1200, first water pump; 1300, charger; 1400, engine; 1500, electric control device; 1600, motor; 1700, second water pump; 1800, heating core; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0051] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents a "or" relationship between the front and rear associated objects.

[0052] The heat exchanger, heat management system and vehicle provided by the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments and their application scenarios.

[0053] Referring toFigure 1 Embodiments of the present application provide a heat exchanger 100, the heat exchanger 100 comprising: a first header 101, the first header 101 having a first inner cavity 1011;

[0054] a second header 102, the second header 102 having a second inner cavity 1021;

[0055] The second header 102 is arranged in the first inner cavity 1011 of the first header 101, and the outer wall of the second header 102 and the inner wall of the first header 101 have a first gap 1011a; the first gap 1011a is used for flowing a first cooling medium, and the second inner cavity 1021 is used for flowing a second cooling medium.

[0056] In the embodiments of the present application, the first cooling medium can be a coolant. The coolant is a kind of liquid, mainly used for absorbing and transferring heat to control and reduce the working temperature of the equipment, usually applied in automobiles, industrial equipment and electronic systems, etc. The second cooling medium can be a refrigerant. The refrigerant is a kind of substance circulating in the refrigeration system, which absorbs and releases heat in the process of evaporation and condensation to achieve the refrigeration effect, and the refrigerant is widely used in air conditioners, refrigerators and other refrigeration equipment. Alternatively, the first cooling medium can also be a refrigerant, and the second cooling medium can also be a coolant.

[0057] Reference Figure 1In the heat exchanger 100, the first collecting pipe 101 and the second collecting pipe 102 are both relatively closed cylindrical structures, and are isolated from each other. The first collecting pipe 101 and the second collecting pipe 102 are both provided with an outlet and an inlet. By arranging the second collecting pipe 102 in the first inner cavity 1011 of the first collecting pipe 101, and respectively introducing the first cooling medium and the second cooling medium into the first gap 1011a and the second inner cavity 1021, the first cooling medium and the second cooling medium can be subjected to heat exchange. One of the first cooling medium and the second cooling medium can be a cooling medium that has undergone heat exchange with the heat generating component and has a relatively high temperature, and the other of the first cooling medium and the second cooling medium can be a refrigerant that absorbs external heat through phase change. The first cooling medium and the second cooling medium are subjected to heat exchange, so that the first cooling medium and the second cooling medium do not need to absorb a large amount of heat from the external environment, thereby reducing or even avoiding the problem that water vapor in the external environment is condensed on the surface of the heat exchanger 100 after being heated, that is, reducing or even avoiding the problem of frost formation on the surface of the heat exchanger 100 in a low temperature environment. At the same time, the design of nesting the second collecting pipe 102 inside the first collecting pipe 101 further saves space, so that the heat exchanger 100 can be designed to be more compact. The annular first inner cavity not only optimizes the flow path and speed of the first cooling medium, improves the heat exchange efficiency, but also helps to reduce the flow resistance of the first cooling medium, and improves the overall performance of the system. The vehicle adopts the heat exchanger 100, which helps to improve the energy efficiency of the entire vehicle and reduce energy consumption.

[0058] In specific embodiments, the number of the first collecting pipe 101 and the second collecting pipe 102 can be one or multiple. When the number of the first collecting pipe 101 and the second collecting pipe 102 is one, the first cooling medium can flow into one end of the first collecting pipe 101, exchange heat with the second cooling medium in the second collecting pipe 102, and then flow out from the other end of the first collecting pipe 101. The second cooling medium flows into one end of the second collecting pipe 102, exchanges heat with the first cooling medium in the first collecting pipe 101, and then flows out. When the number of the first collecting pipe 101 and the second collecting pipe 102 is multiple, the first cooling medium can flow in a single first collecting pipe 101 or between different first collecting pipes 101, and the second cooling medium can flow between different second collecting pipes 102, so as to better complete the heat exchange between the first cooling medium and the second cooling medium.

[0059] Reference Figure 1 Optionally, the heat exchanger 100 comprises a first heat exchange pipe 103;

[0060] The first heat exchange pipe 103 is provided with a plurality of sub-flow channels 103a, at least one of the plurality of sub-flow channels 103a is in communication with the first header 101, and the remaining sub-flow channels 103a are respectively in communication with the second header 102.

[0061] With reference to Figure 1 In the embodiment of the utility model, the first cooling medium and the second cooling medium can flow into different sub-flow channels 103a in the first heat exchange pipe 103. When the first cooling medium and the second cooling medium flow in the different sub-flow channels 103a of the first heat exchange pipe 103, heat exchange can also be carried out, thereby improving the efficiency of heat exchange of the first cooling medium and the second cooling medium in the heat exchanger 100.

[0062] In a specific embodiment, the position and number of the sub-flow channels 103a into which the first cooling medium flows, and the position and number of the sub-flow channels 103a into which the second cooling medium flows, can be designed according to actual requirements. Specifically, the number of the sub-flow channels 103a into which the first cooling medium flows can be one, two, three, four or even more. Similarly, the number of the sub-flow channels 103a into which the second cooling medium flows can be one, two, three, four or even more. The sub-flow channels 103a into which the first cooling medium flows can be arranged on one side of the first heat exchange pipe 103, and the sub-flow channels 103a into which the second cooling medium flows are correspondingly arranged on the other side of the first heat exchange pipe 103. Alternatively, the sub-flow channels 103a into which the first cooling medium flows and the sub-flow channels 103a into which the second cooling medium flows can also be alternately arranged.

[0063] With reference to Figure 1 Optionally, the first header 101 and the second header 102 are each provided with two; both ends of at least one of the plurality of sub-flow channels 103a are respectively in communication with one first header 101, and both ends of the remaining sub-flow channels 103a are respectively in communication with one second header 102.

[0064] With reference to Figure 1In the heat exchanger 100, the number of the first collecting pipes 101 and the second collecting pipes 102 is two, two ends of the part of the sub-flow channels 103a in the first heat exchange pipe 103 are communicated with the two first collecting pipes 101 respectively, and two ends of the rest of the sub-flow channels 103a in the first heat exchange pipe 103 are communicated with the two second collecting pipes 102 respectively. The first cooling medium flows into the first heat exchange pipe 103 from one first collecting pipe 101, and then flows out from the first heat exchange pipe 103 into another first collecting pipe 101. The second cooling medium flows into the first heat exchange pipe 103 from one second collecting pipe 102, and then flows out from the first heat exchange pipe 103 into another second collecting pipe 102. In this way, the flow of the first cooling medium and the second cooling medium is accelerated, and the circulation efficiency of the first cooling medium and the second cooling medium in the heat exchanger 100 is improved. In addition, by increasing the first collecting pipes 101 and the second collecting pipes 102, the area for heat exchange of the first cooling medium and the second cooling medium can be increased, and the heat exchange efficiency of the first cooling medium and the second cooling medium in the heat exchanger 100 is improved.

[0065] Reference Figure 2 , Figure 3 Optionally, the sub-flow channels 103a are arranged in parallel along the first direction X, and the sub-flow channels 103a communicated with the first collecting pipes 101 are arranged on the same side of the rest of the sub-flow channels 103a.

[0066] In the installation of the heat exchanger 100, the sub-flow channels 103a flowed into by the first cooling medium and the second cooling medium with higher temperature can be arranged on the windward side of the heat exchanger 100. In this way, the windward side of the heat exchanger 100 is not easy to frost, and the air flowed into the heat exchanger 100 can be heated, so that the sub-flow channels 103a on the other side of the heat exchanger 100 can exchange heat with the air with relatively higher temperature, and the problem of frost on the surface of the heat exchanger 100 is reduced or even avoided. Specifically, when the temperature of the first cooling medium is higher than that of the second cooling medium, the sub-flow channels 103a communicated with the first collecting pipes 101 can be arranged on the windward side of the heat exchanger 100. The sub-flow channels 103a communicated with the second collecting pipes 102 can be arranged on the other side of the heat exchanger 100. When the temperature of the second cooling medium is higher than that of the first cooling medium, the sub-flow channels 103a communicated with the second collecting pipes 102 can be arranged on the windward side of the heat exchanger 100. The sub-flow channels 103a communicated with the first collecting pipes 101 can be arranged on the other side of the heat exchanger 100.

[0067] Reference Figure 4 Optionally, the first heat exchange pipe 103 comprises a through cavity 1031 and a partition plate 1032.

[0068] The through cavity 1031 extends along a second direction Y intersecting the first direction X; the partition plates 1032 are arranged in the through cavity 1031, and the partition plates 1032 are arranged at least two and are arranged at intervals along the first direction X, and the through cavity 1031 is divided into a plurality of sub-flow channels 103a.

[0069] Reference Figure 4 In the heat exchanger 100 of the embodiment of the present application, the first heat exchange pipe 103 has a through cavity 1031 extending along the second direction Y. The second direction Y and the first direction X are two intersecting directions, and preferably, the first direction X and the second direction Y are orthogonal. At least two partition plates 1032 are arranged at intervals along the first direction in the through cavity, so as to divide the through cavity 1031 in the first heat exchange pipe 103 into a plurality of mutually isolated sub-flow channels 103a. In this way, the plurality of independent sub-flow channels 103a can be used for the first cooling medium and the second cooling medium to flow, and the fluid in each sub-flow channel 103a can be prevented from disturbing each other, thereby improving the flow rate of the first cooling medium and the second cooling medium in the first heat exchange pipe 103. At the same time, all the sub-flow channels 103a are integrated in the same first heat exchange pipe 103, which is conducive to the first cooling medium and the second cooling medium using the solid structure of the first heat exchange pipe 103 to transfer heat, thereby improving the heat exchange efficiency of the first cooling medium and the second cooling medium. The partition plates 1032 divide the through cavity 1031 of the heat exchange pipe 103 into a plurality of sub-flow channels 103a, so that the flow rate of the first cooling medium and the second cooling medium in the first heat exchange pipe 103 is more uniform, and the heat exchange is more stable.

[0070] In specific embodiments, the number of partition plates 1032 can be two, so as to divide the through cavity 1031 into three independent sub-flow channels 103a. The number of partition plates 1032 can also be three, so as to divide the through cavity 1031 into four independent sub-flow channels 103a. The number of partition plates 1032 can also be four, five or even more, which will not be listed one by one here. Within a certain range, the more the number of partition plates 1032, the more the sub-flow channels 103a formed, and the higher the heat exchange efficiency of the first heat exchange pipe 103. The partition plates 1032 can be parallel to each other or relatively inclined. In actual application, the partition plates 31 can be arranged more, such as in Figure 5 , the number of partition plates 31 is 10. In this way, the heat exchange area is greatly increased, so that the first heat exchange pipe 103 can realize a larger heat exchange area in a limited space, and the heat exchange efficiency is improved.

[0071] Reference Figure 2 Optionally, along the second direction Y, the end of the sub-flow channel 103a communicating with the second header 102 protrudes from the end of the remaining sub-flow channels 103a; the end of the sub-flow channel 103a communicating with the second header 102 penetrates into the first header 101.

[0072] Reference Figure 2 In the heat exchanger 100 of the embodiment of the present application, the end of the sub-flow channel 103a in communication with the first header 101 extends into the first inner cavity 1011 of the first header 101 and is in communication with the first inner cavity 1011 of the first header 101. The end of the sub-flow channel 103a in communication with the second header 102 protrudes from the end of the rest of the sub-flow channels 103a, so that the end of the sub-flow channel 103a in communication with the second header 102 can pass through the first inner cavity 1011 and extend into the second header 102 to be in communication with the second inner cavity 1021 of the second header 102. In this way, the structure of the first heat exchange pipe 103 can be simplified, and the installation of the first heat exchange pipe 103 is facilitated. The cross-sectional shape of the first header 101 and the second header 102 along the axial direction thereof can be a circular ring structure or a rectangular ring structure, etc.

[0073] Reference Figure 3 Optionally, along the second direction Y, the two ends of all the sub-flow channels 103a are flush; along the second direction Y, one partition plate 1032 is flush with one side wall of the second header 102.

[0074] Reference Figure 3 In the heat exchanger 100 of the embodiment of the present application, the end of the sub-flow channel 103a in communication with the first header 101 extends into the first inner cavity 1011 of the first header 101 and is in communication with the first inner cavity 1011 of the first header 101. The end of the sub-flow channel 103a in communication with the second header 102 protrudes from the end of the rest of the sub-flow channels 103a, so that the end of the sub-flow channel 103a in communication with the second header 102 can pass through the first inner cavity 1011 and extend into the second header 102 to be in communication with the second inner cavity 1021 of the second header 102. In this way, the structure of the first heat exchange pipe 103 can be simplified, and the installation of the first heat exchange pipe 103 is facilitated. The cross-sectional shape of the first header 101 and the second header 102 along the axial direction thereof can be a circular ring structure or a rectangular ring structure, etc.

[0075] Reference Figure 3 In the embodiment of the present application, the cross section of the first header 101 along the axial direction thereof is a circular ring structure, and in order to adapt to the same, the cross section of the second header 102 along the axial direction thereof can include an arc-shaped portion 1022 and a flat portion 1023. The arc-shaped portion 1022 is a part of the circular ring structure concentric with the cross-sectional shape of the first header 101, and the flat portion 1023 is flush with one partition plate 1032 in the extension direction of the second direction Y. When the heat exchange pipe 103 passes through the first header 101 to be in communication with the second header 102, part of the sub-flow channels 103a can be inserted into the second header 102 from the arc-shaped portion 1022 and be in communication with the second header 102, and the rest of the sub-flow channels 103a are parallel to the flat portion 1023 and in communication with the first header 101.

[0076] The cross section of the first header 101 along the axial direction thereof can also be a rectangular ring structure, etc., which is not limited in the embodiment of the present application. Correspondingly, the cross section of the second header 102 along the axial direction thereof can also be a rectangular ring structure.

[0077] Reference Figure 5 Optionally, the heat exchanger 100 comprises a second heat exchange pipe 104 and a third heat exchange pipe 105;

[0078] The second heat exchange pipe 104 is provided with at least two, and the at least two second heat exchange pipes 104 are all in communication with the second header 102, and the third heat exchange pipe 105 is in communication with the first header 101.

[0079] Reference Figure 5 In the heat exchanger 100 of the embodiment of the utility model, the end of the second heat exchange pipe 104 penetrates the side wall of the first header 101 and is in communication with the second header 102, so that the second cooling medium flows in the second heat exchange pipe 104. The third heat exchange pipe 105 is directly in communication with the first header 101, so that the first cooling medium flows in the third heat exchange pipe 105. This helps the first cooling medium and the second cooling medium to exchange heat in the second heat exchange pipe 104 and the third heat exchange pipe 105, thereby increasing the area of heat exchange of the first cooling medium and the second cooling medium, and further improving the heat exchange efficiency between the first cooling medium and the second cooling medium.

[0080] In a specific embodiment, the number of second heat exchange pipes 104 can be two, three, four or even more, and the number of third heat exchange pipes 105 can be one, two, three, four or even more. When the number of second heat exchange pipes 104 and the number of third heat exchange pipes 105 are both multiple, the area of heat exchange of the first cooling medium and the second cooling medium in the heat exchanger 100 can be effectively increased, and the heat exchange efficiency between the first cooling medium and the second cooling medium can be further improved.

[0081] Reference Figure 6 In the heat exchanger 100 of the embodiment of the utility model, in the second direction Y, the side wall of the first header 101 can be provided with an aperture, so that the second heat exchange pipe 104 can directly penetrate the aperture and be in communication with the second header 102, thereby making the installation and replacement of the heat exchange pipe 30 more convenient. The number of apertures can be multiple, and the position can be adjusted as needed, and the shape and size of the aperture can also be adjusted according to the shape and size of the second heat exchange pipe 104. The second heat exchange pipe 104 can be a round pipe, a rectangular flat pipe or a square pipe and other irregularly shaped pipes, and correspondingly, the shape of the aperture can also be designed as a circle, a rectangle or a square and other irregular shapes. In addition, the connection between the aperture and the second heat exchange pipe 104 is a sealed connection, and specific connection methods such as sealed welding or sealed adhesive can be used.

[0082] Reference Figure 5 Optionally, the second heat exchange pipe 104 and the third heat exchange pipe 105 are arranged side by side along the first direction X, and the second heat exchange pipe 104 is arranged on the same side of the third heat exchange pipe 105;

[0083] The first inner cavity 1011 comprises a first part 1011b and a second part 1011c, the first part 1011b and the second part 1011c are located on two sides of the second header 102 along the first direction X respectively; along the first direction X, the size of the first part 1011b is greater than the size of the second part 1011c; the third heat exchange pipe 105 is opposite to and communicates with the first part 1011b.

[0084] With reference to Figure 5 In the vehicle external heat exchanger in the embodiment of the present application, along the first direction X, the size of the first part 1011b is greater than the size of the second part 1011c, through the above design, sufficient space can be left at one end of the first gap 1011 along the first direction X, so that the third heat exchange pipe 105 can be conveniently inserted into the first gap 1011. Since only a larger space is left at one end of the first gap 1011, the other end can maintain a smaller space, so that the internal space of the heat exchanger 100 can be effectively saved, thereby reducing the volume of the entire heat exchanger 100. At the same time, this also facilitates the flow of the first cooling medium into the third heat exchange pipe 105, thereby improving the flow speed of the first cooling medium in the heat exchanger 100.

[0085] Optionally, the outer wall of the second header 102 is provided with a rib plate 106, and the rib plate 106 extends along the radial direction of the second header 102.

[0086] With reference to Figure 7 In the vehicle external heat exchanger in the embodiment of the present application, by arranging the rib plate 106 on the outer wall of the second header 102, the heat exchange area between the second header 102 and the first cooling medium can be effectively increased, thereby enhancing the heat exchange effect. The extension direction of the rib plate 106 can be arranged along the radial direction of the second header 102, so as to further increase the heat exchange area between the second header 102 and the first cooling medium, and guide the flow of the first cooling medium on the surface of the second header 102. In this way, the flow dead angle of the first cooling medium can be reduced, the flow of the first cooling medium is more uniform, and the heat exchange effect between the first cooling medium and the second header 102 is improved.

[0087] In specific embodiments, the rib plate 106 can be segmented and distributed on the outer wall of the second header 102. The rib plate 106 can be a trapezoidal rib structure, a rectangular rib structure or a streamline structure. When the rib plate 106 is a streamline structure, not only the weight of the rib plate 106 can be reduced, but also the design of this shape can help to optimize fluid flow, reduce flow resistance and improve heat exchange efficiency.

[0088] Optionally, a plurality of rib plates 106 are arranged around the second header 102.

[0089] With referenceFigure 8 In the heat exchanger 100 of the embodiment of the present application, when the number of the rib plates 106 is multiple, the area of the rib plates 106 in contact with the fluid can be significantly increased, thereby improving the heat exchange efficiency. Meanwhile, the multiple rib plates 106 are evenly distributed along the circumference of the second header 102, which helps to form a more uniform temperature distribution on the surface of the second header 102, thereby improving the safety and reliability of the heat exchanger 100.

[0090] Optionally, the rib plate 106 comprises at least one of a flat plate, a corrugated plate and a slotted plate.

[0091] In the heat exchanger 100 of the embodiment of the present application, the rib plate 106 comprises at least one of a flat plate, a corrugated plate and a slotted plate. When the rib plate 106 is a flat plate, the heat exchange area between the first cooling medium and the rib plate 106 can be effectively increased, thereby enhancing the heat exchange effect. Meanwhile, the rib plate 106 adopts a flat plate structure, which makes the structure of the rib plate 106 simple, easy to batch process and manufacture, and helps to reduce the cost. When the rib plate 106 is a corrugated plate, not only the heat exchange area between the first cooling medium and the rib plate 106 can be effectively increased, thereby enhancing the heat exchange effect, but also the corrugated plate can guide the flow of the first cooling medium, reduce the flow dead angle, thereby optimizing the fluid flow path and improving the heat exchange performance. When the rib plate 106 is a slotted plate, the contact area between the first cooling medium and the rib plate 106 can also be increased, thereby improving the heat exchange efficiency.

[0092] Optionally, referring to Figure 5 , the outer side wall of the second heat exchange tube 104 and / or the third heat exchange tube 105 is provided with fins 107.

[0093] In the heat exchanger 100 of the embodiment of the present application, the outer side wall of the second heat exchange tube 104 and / or the third heat exchange tube 105 is provided with fins 107. By installing the fins 107, the surface area of the second heat exchange tube 104 and / or the third heat exchange tube 105 can be increased, thereby improving the heat exchange efficiency of the second heat exchange tube 104 and / or the third heat exchange tube 105.

[0094] In specific embodiments, the fins 107 can be flat fins, corrugated fins, H-shaped fins, or wavy fins, etc. Among them, the flat fin is the most common fin shape, which has simple structure and low manufacturing cost, but the heat exchange efficiency is relatively low. For the corrugated fin, the heat exchange performance of the second heat exchange pipe 104 and / or the third heat exchange pipe 105 can be improved by increasing the heat exchange area. The H-shaped fin structure is mainly to symmetrically weld two steel sheets with a circular arc in the middle to form a fin. Through such design, the heat exchange area can be effectively increased. The cross section of the wavy fin is wavy, which can induce laminar flow into turbulent flow, thereby improving the convective heat exchange efficiency. The fins 107 also include many other shapes, such as sawtooth punched fins, louvered fins, perforated fins, square wave fins, triangular wave fins, and stepped fins, etc. These fins can maximize the heat transfer area in a limited enclosed space and improve the heat exchange efficiency of the first cooling medium and the second header 102.

[0095] Optionally, the heat exchanger comprises a first inflow pipe 108, a second inflow pipe 109, a first outflow pipe 110, and a second outflow pipe 111.

[0096] The first inflow pipe 108 and the first outflow pipe 110 are respectively communicated with a first header 101; the second inflow pipe 109 and the second outflow pipe 111 respectively pass through a first header 101 and are respectively communicated with a second header 102 in the first header 101 passed through;

[0097] The first inflow pipe 108 is used for the first cooling medium to flow in, and the first outflow pipe 110 is used for the first cooling medium to flow out; the second inflow pipe 109 is used for the second cooling medium to flow in, and the second outflow pipe 111 is used for the second cooling medium to flow out; the first cooling medium and the second cooling medium have different temperatures.

[0098] Reference Figure 1 In the vehicle external heat exchanger of the embodiment of the present application, by allowing the first cooling medium to flow in from one first header 101 and flow out from another first header 101, and allowing the second cooling medium to flow in from one second header 102 and flow out from another second header 102, the flow path of the first cooling medium and the second cooling medium can be optimized, and the flow dead angle of the first cooling medium and the second cooling medium can be reduced, thereby improving the heat exchange efficiency of the first cooling medium and the second cooling medium. At the same time, this also helps to reduce the flow resistance of the first cooling medium and the second cooling medium, thereby improving the performance of the heat exchanger 100. The first cooling medium and the second cooling medium have different temperatures. When the first cooling medium is a refrigerant and the second cooling medium is a coolant, the temperature of the first cooling medium is usually higher than that of the second cooling medium. When the second cooling medium is a refrigerant and the first cooling medium is a coolant, the temperature of the second cooling medium is usually higher than that of the first cooling medium.

[0099] As Figure 9 shown, the application also provides a heat management system, the heat management system comprising the heat exchanger of any one of the above.

[0100] Optionally, the heat management system further comprises the internal heat exchanger 200, the expansion valve 300, the compressor 400 and the four-way reversing valve 500.

[0101] One of the first gap 1011a and the second inner cavity 1021 of the heat exchanger 100 is in communication with the first port of the expansion valve 300; the same one of the first gap 1011a and the second inner cavity 1021 of the heat exchanger 100 is in communication with one port of the four-way reversing valve 500; the second port of the expansion valve 300 is in communication with the first port of the internal heat exchanger 200; the remaining ports of the four-way reversing valve 500 are in communication with the second port of the internal heat exchanger 200, the input port of the compressor 400 and the output port of the compressor 400 respectively.

[0102] In the embodiments of the utility model, in Figure 8 the heat management system comprises the heat exchanger 100, the expansion valve 300, the four-way reversing valve 200, the compressor 400 and the internal heat exchanger 200.

[0103] The heat exchanger 100 is usually arranged outside the space needing refrigeration or heating, such as an air conditioner outdoor unit; the internal heat exchanger is usually arranged inside the space needing refrigeration or heating, such as an air conditioner main unit. During heating, the heat exchanger 100 is usually communicated with the liquid medium of normal temperature and low pressure, and the liquid medium of normal temperature and low pressure can absorb heat in the heat exchanger 100 and change into the gaseous medium of high temperature and low pressure. The gaseous medium of high pressure and low pressure flows through the compressor 400 and is compressed into the gaseous medium of high temperature and high pressure, the gaseous medium of high temperature and high pressure enters the internal heat exchanger 200 and releases heat, and the gaseous medium of high temperature and high pressure changes into the liquid medium of normal temperature and high pressure. The liquid medium of normal temperature and high pressure is throttled by the expansion valve 300 and becomes the liquid medium of normal temperature and low pressure, and the liquid medium of normal temperature and low pressure reenters the heat exchanger 100.

[0104] During refrigeration, the internal heat exchanger 200 is usually communicated with the liquid medium of normal temperature and low pressure, and the liquid medium of normal temperature and low pressure can absorb heat in the internal heat exchanger 200 and change into the gaseous medium of high temperature and low pressure. The gaseous medium of high pressure and low pressure flows through the compressor 400 and is compressed into the gaseous medium of high temperature and high pressure, the gaseous medium of high temperature and high pressure enters the heat exchanger 100 and releases heat, and the gaseous medium of high temperature and high pressure changes into the liquid medium of normal temperature and high pressure. The liquid medium of normal temperature and high pressure is throttled by the expansion valve 300 and becomes the liquid medium of normal temperature and low pressure, and the liquid medium of normal temperature and low pressure reenters the internal heat exchanger 200.

[0105] The four-way reversing valve 500 is connected with the internal heat exchanger 200, the heat exchanger 100, the input port of the compressor 400 and the output port of the compressor 400 respectively, and is used for changing the flow direction of the high-temperature and high-pressure gaseous medium output by the compressor 400, thereby realizing switching between the refrigeration mode and the heating mode.

[0106] One of the first cooling medium and the second cooling medium is a refrigerant. The refrigerant is a medium flowing in the heat exchanger 100, the expansion valve 300, the four-way reversing valve 200, the compressor 400 and the internal heat exchanger 200. When the first gap 1011a of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the first cooling medium is the refrigerant. The second cooling medium with a higher temperature than the first cooling medium can be introduced into the second inner cavity 1021 of the heat exchanger 100. When the second inner cavity 1021 of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the second cooling medium is the refrigerant. The first cooling medium with a higher temperature than the second cooling medium can be introduced into the first gap 1011a of the heat exchanger 100. In this way, the first cooling medium and the second cooling medium can be heat-exchanged, so that the heat absorbed from the outside by the first cooling medium and the second cooling medium is reduced, thereby reducing the frosting degree of the heat exchanger 100 or even avoiding frosting.

[0107] Optionally, the heat management system further comprises a first radiator 600, and the first radiator 600 is adapted to exchange heat with the engine 1400.

[0108] The other one of the first gap 1011a and the second inner cavity 1021 of the heat exchanger 100 is communicated with the first radiator 600.

[0109] In the embodiment of the utility model, the cooling medium in the first radiator 600 can cool the engine 1400, and since the first radiator 600 is communicated with the heat exchanger 100, the cooling medium with the heat of the engine 1400 in the first radiator can enter the heat exchanger 100 and exchange heat with the cooling medium in the heat exchanger 100.

[0110] One of the first cooling medium and the second cooling medium is a coolant. The coolant is the cooling medium flowing in the first radiator 600. When the first gap 1011a of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the second inner cavity 1021 of the heat exchanger 100 is communicated with the first radiator 600 at this time. The first cooling medium is the refrigerant, and the second cooling medium is the coolant. Since the second cooling medium absorbs the heat of the engine 1400 at this time, the temperature thereof is generally higher than that of the first cooling medium. After the second cooling medium enters the second inner cavity 1021 of the heat exchanger 100, heat exchange can be performed with the first cooling medium entering the first gap 1011a of the heat exchanger 100. In this way, the heat that needs to be absorbed by the first cooling medium from the outside can be reduced, and thus the frosting degree of the heat exchanger 100 can be reduced, and even frosting can be avoided.

[0111] When the second inner cavity 1021 of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the first gap 1011a of the heat exchanger 100 is communicated with the first radiator 600 at this time. The first cooling medium is the coolant, and the second cooling medium is the refrigerant. Since the first cooling medium absorbs the heat of the engine 1400 at this time, the temperature thereof is generally higher than that of the second cooling medium. After the first cooling medium enters the first gap 1011a of the heat exchanger 100, heat exchange can be performed with the second cooling medium entering the second inner cavity 1021 of the heat exchanger 100. In this way, the heat that needs to be absorbed by the second cooling medium from the outside can be reduced, and thus the frosting degree of the heat exchanger 100 can be reduced, and even frosting can be avoided.

[0112] Optionally, the heat management system further comprises a second radiator 700, and the second radiator 700 is adapted to exchange heat with at least one of the motor 1600, the electric control device 1500 and the charger 1300.

[0113] The other one of the first gap 1011a and the second inner cavity 1021 of the heat exchanger 100 is communicated with the second radiator 700.

[0114] In the embodiment of the utility model, the cooling medium in the second radiator 700 can cool at least one of the motor 1600, the electric control device 1500 and the charger 1300, since the second radiator 700 is communicated with the heat exchanger 100, the cooling medium with the heat of the motor 1600, the electric control device 1500 and the charger 1300 in the second radiator can enter the heat exchanger 100 and exchange heat with the cooling medium in the heat exchanger 100. In addition, the second radiator 700 can also cool the high-voltage direct-current converter.

[0115] One of the first cooling medium and the second cooling medium is a coolant. The coolant is the cooling medium flowing in the second radiator 700. When the first gap 1011a of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the second inner cavity 1021 of the heat exchanger 100 is communicated with the second radiator 700. The first cooling medium is the refrigerant, and the second cooling medium is the coolant. Since the second cooling medium absorbs the heat of at least one of the motor 1600, the electronic control device 1500, the charger 1300 and the high-voltage direct-current converter at this time, the temperature thereof is generally higher than that of the first cooling medium. After the second cooling medium enters the second inner cavity 1021 of the heat exchanger 100, heat exchange can be performed with the first cooling medium entering the first gap 1011a of the heat exchanger 100. In this way, the heat that needs to be absorbed by the first cooling medium from the outside can be reduced, and thus the frosting degree of the heat exchanger 100 can be reduced, and even frosting can be avoided.

[0116] When the second inner cavity 1021 of the heat exchanger 100 is communicated with the first port of the expansion valve 300 and one port of the four-way reversing valve 500, the first gap 1011a of the heat exchanger 100 is communicated with the second radiator 700. The first cooling medium is the coolant, and the second cooling medium is the refrigerant. Since the first cooling medium absorbs the heat of at least one of the motor 1600, the electronic control device 1500, the charger 1300 and the high-voltage direct-current converter at this time, the temperature thereof is generally higher than that of the second cooling medium. After the first cooling medium enters the first gap 1011a of the heat exchanger 100, heat exchange can be performed with the second cooling medium entering the second inner cavity 1021 of the heat exchanger 100. In this way, the heat that needs to be absorbed by the second cooling medium from the outside can be reduced, and thus the frosting degree of the heat exchanger 100 can be reduced, and even frosting can be avoided.

[0117] In the embodiment of the utility model, the heat management system further includes an in-vehicle condenser 800, a first regulating valve 900, a second regulating valve 1000, a stop valve 1100, a first water pump 1200, a charger 1300, an engine 1400, an electronic control device 1500, a motor 1600, a second water pump 1700 and a heater core 1800.

[0118] The first regulating valve 900 and the second regulating valve 1000 are used for adjusting the flow of cooling in the system, controlling the flow direction and flow of the cooling medium in the system to adapt to different heat management requirements. The stop valve 1100 is used for cutting off or connecting the flow of the cooling medium in the pipeline to control the circulation of the cooling medium. The first water pump 1200 and the second water pump 1700 are used for driving the cooling medium to circulate in the system to transfer heat and maintain the temperature balance in the system.

[0119] For the charger 1300, it can convert alternating current power into direct current power to charge the power battery. The vehicle also has a high-voltage direct-current converter to convert direct current of one voltage value into direct current of another voltage value, which is commonly used to convert the energy of a high-voltage battery into low-voltage to power the 12V load system and 12V battery. In a hybrid or traditional fuel vehicle, the electronic control device 1500 is an electronic control unit responsible for the control logic and strategy of the vehicle thermal management system, ensuring that each component works together to achieve the best thermal management effect, and the motor 1600 is one of the power sources of a new energy vehicle. The motor 1600 generates heat during operation and needs to be cooled by the thermal management system. The charger 1300 and the high-voltage direct-current converter, the electronic control device 1500 and the motor 1600 can all generate heat to heat the cooling medium.

[0120] The engine 011 is the main power source and also one of the sources of heat energy. The first radiator 600 flows with cooling medium and can exchange heat with the high-temperature cooling medium in the engine 1400 to keep the engine 1400 working within a suitable temperature range. The second radiator 700 flows with cooling medium and can exchange heat with the low-temperature cooling medium in the charger 1300, the high-voltage direct-current converter, the electronic control device 1500 and the motor 1600. In the embodiment of the utility model, the first radiator 600 is connected with the engine 1400 and used for cooling the engine coolant. The second radiator 700 can exchange heat with the first radiator 600 to cool the cooling medium in the first radiator 600. In addition, the second radiator 700 can also exchange heat with the low-temperature cooling medium in the charger 1300, the high-voltage direct-current converter, the electronic control device 1500 and the motor 1600.

[0121] In the heating system, the heater core 1800 is used to transfer heated air or liquid to the vehicle cabin for heating, so one end of the heater core 1800 is connected with the heat exchanger 100 and the other end is connected with the engine 1400 to absorb the heat of the engine 1400.

[0122] The first regulating valve 900 and the second regulating valve 1000 are used to regulate the flow of cooling medium in the system and control the flow direction and flow of the cooling medium. The stop valve 1100 is used to cut off or connect the flow of cooling medium in the pipeline. One end of the first regulating valve 900 is in communication with the charger 1300 and the high-voltage direct-current converter, and the other end is in communication with the stop valve 1100. One end of the second regulating valve 1000 is in communication with the first water pump 1200, and the other end is in communication with the stop valve 1100. The stop valve 1100 is between the first regulating valve 900 and the heat exchanger 100.

[0123] The first water pump 1200 and the second water pump 1700 are used to drive the cooling medium to circulate in the system and transfer heat. The first water pump 1200 is connected to the engine 1400 at one end and is in communication with the second regulating valve 1000 at the other end. The second water pump 1700 is located between the second radiator 700 and the motor 1600 and is connected to the second radiator 700 and the motor 1600.

[0124] The application also provides a vehicle comprising the above-mentioned vehicle external heat exchanger or the above-mentioned thermal management system.

[0125] It should be noted that, in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that comprise a list of elements not only include those elements, but also include other elements not expressly listed, or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described methods can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0126] The embodiments of the application are described above in conjunction with the drawings, but the application is not limited to the specific embodiments described above, which are merely illustrative and not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims.

Claims

1. A heat exchanger, characterized in that, include: A first manifold (101) having a first inner cavity (1011); The second manifold (102) has a second inner cavity (1021); The second manifold (102) is disposed in the first inner cavity (1011) of the first manifold (101), and there is a first gap (1011a) between the outer wall of the second manifold (102) and the inner wall of the first manifold (101); the first gap (1011a) is used for the flow of the first cooling medium, and the second inner cavity (1021) is used for the flow of the second cooling medium.

2. The heat exchanger according to claim 1, characterized in that, The heat exchanger includes a first heat exchange tube (103); The first heat exchange tube (103) is provided with a plurality of sub-channels (103a), at least one of the plurality of sub-channels (103a) is connected to the first manifold (101), and the remaining sub-channels (103a) are respectively connected to the second manifold (102).

3. The heat exchanger according to claim 2, characterized in that, Both the first manifold (101) and the second manifold (102) are provided in twos; at least one of the plurality of sub-channels (103a) has its two ends connected to one of the first manifolds (101), and the two ends of the remaining sub-channels (103a) are connected to one of the second manifolds (102).

4. The heat exchanger according to claim 2, characterized in that, The sub-channels (103a) are arranged side by side along the first direction (X), and the sub-channels (103a) that communicate with the first manifold (101) are arranged on the same side as the other sub-channels (103a).

5. The heat exchanger according to claim 4, characterized in that, The first heat exchange tube (103) includes a through cavity (1031) and a partition (1032); The through cavity (1031) extends along the second direction (Y), which intersects with the first direction (X); the partition (1032) is disposed in the through cavity (1031), and at least two partitions (1032) are disposed and arranged at intervals along the first direction (X), dividing the through cavity (1031) into a plurality of sub-channels (103a).

6. The heat exchanger according to claim 5, characterized in that, Along the second direction (Y), the end of the sub-channel (103a) communicating with the second manifold (102) protrudes beyond the ends of the other sub-channels (103a); the end of the sub-channel (103a) communicating with the second manifold (102) penetrates into the first manifold (101).

7. The heat exchanger according to claim 5, characterized in that, Along the second direction (Y), the ends of all the sub-channels (103a) remain flush; along the second direction (Y), one of the partitions (1032) is flush with one side wall of the second manifold (102).

8. The heat exchanger according to claim 1, characterized in that, The heat exchanger includes a second heat exchange tube (104) and a third heat exchange tube (105); At least two second heat exchange tubes (104) are provided, and at least two second heat exchange tubes (104) are connected to the second manifold (102). The third heat exchange tube (105) is connected to the first manifold (101).

9. The heat exchanger according to claim 8, characterized in that, The second heat exchange tube (104) and the third heat exchange tube (105) are arranged side by side along the first direction (X), and the second heat exchange tube (104) is arranged on the same side of the third heat exchange tube (105); The first inner cavity (1011) includes a first part (1011b) and a second part (1011c), the first part (1011b) and the second part (1011c) are respectively located on both sides of the second manifold (102) along the first direction (X); along the first direction (X), the size of the first part (1011b) is larger than the size of the second part (1011c); the third heat exchange tube (105) is opposite to and connected to the first part (1011b).

10. The heat exchanger according to any one of claims 1-9, characterized in that, The outer wall of the second manifold (102) is provided with a rib (106) which extends radially along the second manifold (102).

11. The heat exchanger according to claim 10, characterized in that, Multiple ribs (106) are provided, and the multiple ribs (106) are evenly arranged around the second manifold (102).

12. The heat exchanger according to claim 10, characterized in that, The rib (106) includes at least one of a flat plate, a corrugated plate, and a slotted plate.

13. The heat exchanger according to claim 8, characterized in that, Fins (107) are provided on the outer wall of the second heat exchange tube (104) and / or the third heat exchange tube (105).

14. The heat exchanger according to claim 3, characterized in that, The heat exchanger includes a first inlet pipe (108), a second inlet pipe (109), a first outlet pipe (110), and a second outlet pipe (111); The first inlet pipe (108) and the first outlet pipe (110) are respectively connected to a first manifold (101); the second inlet pipe (109) and the second outlet pipe (111) pass through a first manifold (101) and are respectively connected to the second manifold (102) inside the first manifold (101) they pass through; The first inlet pipe (108) is used to supply the first cooling medium to flow in, and the first outlet pipe (110) is used to supply the first cooling medium to flow out; the second inlet pipe (109) is used to supply the second cooling medium to flow in, and the second outlet pipe (111) is used to supply the second cooling medium to flow out; the first cooling medium and the second cooling medium have different temperatures.

15. A thermal management system, characterized in that, Includes the heat exchanger (100) as described in any one of claims 1 to 14.

16. The thermal management system according to claim 15, characterized in that, The thermal management system also includes an internal heat exchanger (200), an expansion valve (300), a compressor (400), and a four-way reversing valve (500); One of the first gap (1011a) and the second inner cavity (1021) of the heat exchanger (100) is connected to the first port of the expansion valve (300); the same of the first gap (1011a) and the second inner cavity (1021) of the heat exchanger (100) is connected to one port of the four-way reversing valve (500); the second port of the expansion valve (300) is connected to the first port of the internal heat exchanger (200); the remaining ports of the four-way reversing valve (500) are respectively connected to the second port of the internal heat exchanger (200), the inlet of the compressor (400), and the outlet of the compressor (400).

17. The thermal management system according to claim 16, characterized in that, The thermal management system further includes a first radiator (600) adapted to exchange heat with the engine (1400); The first gap (1011a) and the other of the second inner cavity (1021) of the heat exchanger (100) are in communication with the first radiator (600).

18. The thermal management system according to claim 16, characterized in that, The thermal management system further includes a second radiator (700) adapted to exchange heat with at least one of the motor (1600), the electrical control device (1500), and the charger (1300); The first gap (1011a) and the other of the second inner cavity (1021) of the heat exchanger (100) are in communication with the second radiator (700).

19. A vehicle, characterized in that, It includes the heat exchanger (100) according to any one of claims 1-14 or the thermal management system according to any one of claims 15-18.

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