Heat exchanger assembly, heat management system and vehicle

Abstract

The invention discloses a heat exchanger assembly, a heat management system and a vehicle, the heat exchanger assembly comprises a first heat exchanger, the first heat exchanger is provided with a plurality of first heat exchange flow paths, and the plurality of first heat exchange flow paths are arranged along a first direction; the second heat exchanger and the first heat exchanger are stacked in the second direction, the first direction is perpendicular to the second direction, the second heat exchanger is provided with a second heat exchange flow path, and at least part of the second heat exchange flow path is connected between the two first heat exchange flow paths. According to the heat exchanger assembly, at least part of the second heat exchange flow path is connected between the two first heat exchange flow paths, part of the multiple first heat exchange flow paths can be located on the upstream of the second heat exchange flow path, and part of the multiple first heat exchange flow paths can be located on the downstream of the second heat exchange flow path, so that the situation that water completely flows through the first heat exchange flow paths and then flows to the second heat exchange flow path is avoided; pressure loss caused by overcoming gravity in the flowing process of a heat exchange medium can be reduced, and therefore the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to a heat exchanger assembly, a thermal management system and a vehicle. Background Art

[0002] In the related art, the double-layer condenser is composed of two independent single-layer condensers, which are connected by an inclined pipe. The pipe is used to drain the refrigerant from the lower part of the rear condenser to the upper part of the front condenser. This process has a large pressure loss and poor heat exchange efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a heat exchanger assembly having low pressure loss and high heat exchange efficiency.

[0004] The present invention also provides a thermal management system, which includes the above-mentioned heat exchanger assembly.

[0005] The present invention also provides a vehicle, comprising the above-mentioned thermal management system.

[0006] According to an embodiment of the present invention, the heat exchanger assembly includes: a first heat exchanger, the first heat exchanger having a plurality of first heat exchange flow paths, and the plurality of first heat exchange flow paths are arranged along a first direction; a second heat exchanger, the second heat exchanger and the first heat exchanger are stacked along a second direction, the first direction and the second direction are perpendicular, the second heat exchanger having a second heat exchange flow path, and at least part of the second heat exchange flow path is connected between two of the first heat exchange flow paths.

[0007] According to the heat exchanger assembly of an embodiment of the present invention, a first heat exchanger and a second heat exchanger are stacked along a second direction, and the first heat exchanger includes a plurality of first heat exchange paths arranged along the first direction, and the second heat exchanger includes a second heat exchange path, and at least part of the second heat exchange path is connected between the two first heat exchange paths. This allows some of the multiple first heat exchange paths to be located upstream of the second heat exchange path, and some to be located downstream of the second heat exchange path, thereby avoiding flowing through the first heat exchange path completely before flowing into the second heat exchange path. This can reduce the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0008] According to some embodiments of the present invention, the first heat exchanger includes a first header, a second header, and a plurality of first heat exchange tubes, the first header and the second header extend along the first direction and are spaced apart along the third direction, the plurality of first heat exchange tubes are spaced apart along the first direction, the two ends of the first heat exchange tube along the third direction are respectively connected to the first header and the second header, the first heat exchange flow path flows through the first header, the second header, and part of the first heat exchange tubes, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0009] In some embodiments of the present invention, the second heat exchanger includes a third header, a fourth header and a plurality of second heat exchange tubes, the third header and the fourth header extend along the first direction and are spaced apart along the third direction, the plurality of second heat exchange tubes are spaced apart along the first direction, the two ends of the second heat exchange tube along the third direction are respectively connected to the third header and the fourth header, the second heat exchange flow path flows through the third header, the fourth header and part of the second heat exchange tubes, the third header and the first header are located on the same side of the third direction, and the second header and the fourth header are located on the same side of the third direction.

[0010] In some embodiments of the present invention, the plurality of first heat exchange paths include a first sub-heat exchange path and a second sub-heat exchange path, and at least a portion of the path of the second heat exchanger along the first direction close to one end of the first sub-heat exchange path is connected between the first sub-heat exchange path and the second sub-heat exchange path.

[0011] In some embodiments of the present invention, there are multiple second heat exchange flow paths, the multiple second heat exchange flow paths are arranged along the first direction, and the multiple first heat exchange flow paths and the multiple second heat exchange flow paths are alternately connected.

[0012] In some embodiments of the present invention, the plurality of second heat exchange paths include a third sub-heat exchange path and a fourth sub-heat exchange path. Along the first direction, the third sub-heat exchange path and the first sub-heat exchange path are located on the same side, the third sub-heat exchange path is connected between the first sub-heat exchange path and the second sub-heat exchange path, and the fourth sub-heat exchange path is connected to the end of the second heat exchange path facing away from the first heat exchange path.

[0013] In some embodiments of the present invention, the first header has a first inlet, which is arranged at the end of the first header facing away from the second sub-heat exchange flow path, and the first inlet is connected to the end of the first sub-heat exchange flow path facing away from the third sub-heat exchange flow path; and / or, the third header has an outlet, which is arranged at the end of the second header facing away from the third sub-heat exchange flow path, and the outlet is connected to the end of the fourth sub-heat exchange flow path facing away from the second sub-heat exchange flow path; and / or, the first header has a second inlet, which is connected to the end of the second sub-heat exchange flow path facing away from the fourth sub-heat exchange flow path, or the fourth header has a second inlet, which is connected to the end of the fourth sub-heat exchange flow path close to the second sub-heat exchange flow path.

[0014] In some embodiments of the present invention, the number of the first heat exchange tubes in the first sub-heat exchange flow path is N1, the number of the first heat exchange tubes in the second sub-heat exchange flow path is N2, the number of the second heat exchange tubes in the third sub-heat exchange flow path is N3, and the number of the second heat exchange tubes in the fourth sub-heat exchange flow path is N4, and the following conditions are satisfied: N3>N1>N2>N4.

[0015] In some embodiments of the present invention, 1.2N1≤N3≤1.4N1; and / or, 0.4N1≤N2≤0.6N1; and / or, 0.2N1≤N4≤0.3N1.

[0016] In some embodiments of the present invention, the first collecting pipe has a first partition therein, and two adjacent first heat exchange paths are separated by the first partition; and / or, the second collecting pipe has a second partition therein, and two adjacent first heat exchange paths are separated by the second partition; and / or, the second heat exchange paths are multiple and arranged along the first direction, the third collecting pipe has a third partition therein, and two adjacent second heat exchange paths are separated by the third partition; and / or, the second heat exchange paths are multiple and arranged along the first direction, the fourth collecting pipe has a fourth partition therein, and two adjacent second heat exchange paths are separated by the fourth partition.

[0017] In some embodiments of the present invention, the first collecting pipe has a first partition, the second collecting pipe has a second partition, and the first partition and the second partition are symmetrically arranged; and / or the third collecting pipe has a third partition, the fourth collecting pipe has a fourth partition, and the third partition and the fourth partition are symmetrically arranged; and / or the first collecting pipe has a first inlet, the first inlet is connected to one of the first heat exchange flow paths located at the end, the total number of the first heat exchange flow paths and the second heat exchange flow paths is greater than or equal to 4, and among the four adjacent first heat exchange flow paths and the second heat exchange flow paths, the first partition between two adjacent first heat exchange flow paths is closer to the first inlet along the first direction than the third partition between two adjacent second heat exchange flow paths.

[0018] In some embodiments of the present invention, two adjacent first heat exchange paths and second heat exchange paths are connected through a first hole group provided on the first header or the second header and a second hole group provided on the fourth header or the third header.

[0019] In some embodiments of the present invention, the first hole group includes a plurality of first holes spaced apart along the first direction, and the opening areas of the plurality of first holes gradually decrease along the first direction and along the flow direction of the flowing medium of the plurality of first heat exchange paths; and / or, the second hole group includes a plurality of second holes spaced apart along the first direction, and the opening areas of the plurality of second holes gradually decrease along the first direction and along the flow direction of the flowing medium of the plurality of second heat exchange paths.

[0020] In some embodiments of the present invention, the first hole group includes a plurality of first holes spaced apart along the first direction, and the second hole group includes a plurality of second holes spaced apart along the first direction, and the number of the first holes in the first hole group and the number of the second holes in the second hole group that are interconnected are the same and correspond one to one.

[0021] In some embodiments of the present invention, the first hole group includes a plurality of first holes spaced apart along the first direction, and the first holes are shaped as oblong holes extending along the first direction; and / or, the second hole group includes a plurality of second holes spaced apart along the first direction, and the first holes are shaped as oblong holes extending along the first direction.

[0022] In some embodiments of the present invention, the first heat exchanger is located on the leeward side of the second heat exchanger.

[0023] A thermal management system according to an embodiment of the present invention includes the above-mentioned heat exchanger assembly.

[0024] According to the thermal management system of an embodiment of the present invention, by setting the above-mentioned heat exchanger assembly, a first heat exchanger and a second heat exchanger stacked along the second direction are set, and the first heat exchanger includes a plurality of first heat exchange paths arranged along the first direction, and the second heat exchanger includes a second heat exchange path, and at least part of the second heat exchange path is connected between the two first heat exchange paths. This can make some of the multiple first heat exchange paths located upstream of the second heat exchange path, and some located downstream of the second heat exchange path, avoiding flowing through the first heat exchange path completely before flowing to the second heat exchange path, and can reduce the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0025] In some embodiments of the present invention, it also includes: a compressor, the compressor having an exhaust port and a return air port, and the inlet of the heat exchanger assembly is connected to the exhaust port of the compressor; an evaporator, one end of the evaporator is connected to the outlet of the heat exchanger assembly, and the other end is connected to the return air port of the compressor; and / or, a battery cold plate, one end of the battery cold plate is connected to the outlet of the heat exchanger assembly, and the other end is connected to the return air port of the compressor; and / or, an electric drive direct cooling module, one end of the electric drive direct cooling module is connected to the outlet of the heat exchanger assembly, and the other end is connected to the return air port of the compressor.

[0026] In some embodiments of the present invention, a first expansion valve is provided between the evaporator and the outlet of the heat exchanger assembly; and / or, a second expansion valve is provided between the battery cold plate and the outlet of the heat exchanger assembly; and / or, a third expansion valve is provided between the electric drive direct cooling module and the outlet of the heat exchanger assembly; and / or, a first throttle valve is provided between the battery cold plate and the return air port of the compressor; and / or, a second throttle valve is provided between the electric drive direct cooling module and the return air port of the compressor.

[0027] In some embodiments of the present invention, the inlet includes a first inlet and a second inlet, the flow from the first inlet to the outlet passes through all of the first heat exchange flow path and the second heat exchange flow path, the flow from the second inlet to the outlet passes through part of the first heat exchange flow path and / or part of the second heat exchange flow path, and the first inlet and the second inlet are both connected to the exhaust port of the compressor.

[0028] In some embodiments of the present invention, the system further includes: a first pipeline, one end of which is connected to the first inlet; and a first three-way valve, through which the first pipeline, the second inlet, and the exhaust port of the compressor are connected.

[0029] In some embodiments of the present invention, the system further comprises: a condenser, wherein the condenser is connected in parallel with the heat exchanger assembly.

[0030] In some embodiments of the present invention, the system further includes: a second pipeline, one end of the condenser is connected to the second pipeline; and a second three-way valve, the second pipeline, the first pipeline and the first inlet are connected via the second three-way valve.

[0031] In some embodiments of the present invention, one end of the battery cold plate facing away from the heat exchanger assembly is connected to the exhaust port of the compressor.

[0032] In some embodiments of the present invention, one end of the battery cold plate facing away from the heat exchanger assembly, one end of the condenser, and the second pipeline are connected via a third three-way valve.

[0033] A vehicle according to an embodiment of the present invention includes the above-mentioned thermal management system.

[0034] According to the vehicle of an embodiment of the present invention, by setting the above-mentioned thermal management system, setting the above-mentioned heat exchanger assembly, setting the first heat exchanger and the second heat exchanger stacked along the second direction, and making the first heat exchanger include a plurality of first heat exchange paths arranged along the first direction, the second heat exchanger includes a second heat exchange path, at least part of the second heat exchange path is connected between the two first heat exchange paths, so that part of the plurality of first heat exchange paths can be located upstream of the second heat exchange path, and part can be located downstream of the second heat exchange path, avoiding flowing through the first heat exchange path completely and then flowing to the second heat exchange path, which can reduce the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0035] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0037] Figure 1 is a perspective view of a heat exchanger assembly according to an embodiment of the present invention;

[0038] Figure 2 is a front view of a first heat exchanger of a heat exchanger assembly according to an embodiment of the present invention;

[0039] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0040] Figure 4 is a rear view of a second heat exchanger of a heat exchanger assembly according to an embodiment of the present invention;

[0041] Figure 5is a schematic diagram of a refrigeration flow path of a heat exchanger assembly according to an embodiment of the present invention;

[0042] Figure 6 is a schematic diagram of a thermal management system according to an embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a three-way cooling mode for the passenger compartment, battery, and electric drive;

[0044] Figure 8 is a schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a low ambient temperature battery cooling operating condition;

[0045] Figure 9 is a schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a dual-operation state of passenger compartment heating and battery heating;

[0046] Figure 10 is a schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a 10-20°C heating and dehumidification operating condition;

[0047] Figure 11 is a schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a 0-10°C heating and dehumidification operating condition;

[0048] Figure 12 Schematic diagram of a thermal management system according to an embodiment of the present invention, wherein the thermal management system is in a multi-operation state of heating and dehumidification, and battery and electric drive cooling.

[0049] Reference numerals:

[0050] 100. Thermal management system;

[0051] 10. Heat exchanger assembly;

[0052] 1. First heat exchanger; 11. First header; 111. First inlet; 112. First baffle; 113. Second inlet; 12. Second header; 121. Second baffle; 122. First hole group; 123. First hole; 13. First heat exchange tube; 14. First heat exchange flow path; 141. First sub-heat exchange flow path; 142. Second sub-heat exchange flow path;

[0053] 2. Second heat exchanger; 21. Third header; 211. Outlet; 212. Third baffle; 22. Fourth header; 221. Fourth baffle; 222. Second hole group; 223. Second hole; 23. Second heat exchange tube; 24. Second heat exchange flow path; 241. Third sub-heat exchange flow path; 242. Fourth sub-heat exchange flow path;

[0054] 20. Compressor; 201. Exhaust port; 202. Return air port;

[0055] 30. Evaporator; 301. First expansion valve;

[0056] 40. Battery cold plate; 401. Second expansion valve; 402. First throttle valve;

[0057] 50. Electric drive direct cooling module; 501. Third expansion valve; 502. Second throttle valve;

[0058] 60. Condenser;

[0059] 701, first three-way valve; 702, second three-way valve; 703, third three-way valve;

[0060] 801, first pipeline; 802, second pipeline;

[0061] 901, electronic fan; 902, PTC; 903, gas-liquid separator;

[0062] 200. The front cabin air inlet deflector of the vehicle. DETAILED DESCRIPTION

[0063] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0065] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0066] Reference below Figure 1-Figure 5 A heat exchanger assembly 10 according to an embodiment of the present invention is described.

[0067] like Figure 1-Figure 5 As shown, a heat exchanger assembly 10 according to an embodiment of the present invention includes a first heat exchanger 1 and a second heat exchanger 2 .

[0068] Specifically, the first heat exchanger 1 has multiple first heat exchange paths 14, and the multiple first heat exchange paths 14 are arranged along the first direction. The second heat exchanger 2 is stacked with the first heat exchanger 1 along the second direction, and the first direction and the second direction are perpendicular. The second heat exchanger 2 has a second heat exchange path 24, and at least part of the second heat exchange path 24 is connected between two first heat exchange paths 14.

[0069] It is understandable that all of the second heat exchange paths 24 of the second heat exchanger 2 may be connected between the two first heat exchange paths 14 , or part of the second heat exchange paths 24 may be connected between the two first heat exchange paths 14 .

[0070] The heat exchange medium within the heat exchanger assembly 10 can flow into one of the first heat exchange paths 14, flow through at least one of the first heat exchange paths 14 to the second heat exchange path 24, and then flow to at least some of the remaining first heat exchange paths 14. During the flow of the heat exchange medium, the heat exchange medium can flow into the first heat exchanger 1, then flow to the second heat exchanger 2, and then flow to the first heat exchanger 1. When the first direction is the up-down direction, during the flow of the heat exchange medium, the heat exchange medium can be prevented from completing all heat exchange in the first heat exchanger 1 before flowing through the second heat exchanger 2. The heat exchange medium can also be prevented from flowing from the lower end of the first heat exchanger 1 to the upper end of the second heat exchanger 2. This can reduce pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving heat exchange efficiency.

[0071] According to the heat exchanger assembly 10 of an embodiment of the present invention, a first heat exchanger 1 and a second heat exchanger 2 are stacked along a second direction, and the first heat exchanger 1 includes a plurality of first heat exchange paths 14 arranged along the first direction, and the second heat exchanger 2 includes a second heat exchange path 24, at least part of the second heat exchange path 24 is connected between the two first heat exchange paths 14, so that part of the plurality of first heat exchange paths 14 can be located upstream of the second heat exchange path 24, and part can be located downstream of the second heat exchange path 24, avoiding the flow of the first heat exchange path 14 completely before flowing into the second heat exchange path 24, and reducing the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0072] In some embodiments of the present invention, Figure 2 As shown, the first heat exchanger 1 includes a first header 11, a second header 12, and a plurality of first heat exchange tubes 13. The first header 11 and the second header 12 extend along a first direction and are spaced apart along a third direction. The plurality of first heat exchange tubes 13 are spaced apart along the first direction. The ends of the first heat exchange tubes 13 along the third direction are respectively connected to the first header 11 and the second header 12. A first heat exchange flow path 14 flows through the first header 11, the second header 12, and a portion of the first heat exchange tubes 13. The first direction, the second direction, and the third direction are perpendicular to each other.

[0073] It is understood that the first heat exchange flow path 14 flows through a portion of the first heat exchange tubes 13 and the portions of the first header 11 and the second header 12 opposite the first heat exchange tubes 13 of the first heat exchange flow path 14. The first heat exchange tubes 13 of the multiple first heat exchange flow paths 14 are arranged along the first direction. Specifically, when there are multiple first heat exchange flow paths 14, the multiple first heat exchange tubes 13 are divided into multiple groups. The multiple groups of first heat exchange tubes 13 are arranged along the first direction. The multiple groups of first heat exchange tubes 13 belong to the multiple first heat exchange flow paths 14, and each group of first heat exchange tubes 13 may include one or more first heat exchange tubes 13.

[0074] Optionally, the first heat exchange tube 13 is a flat heat exchange tube, and the first heat exchange tube 13 may have one or more channels. When there are multiple channels in the first heat exchange tube 13, the two ends of the multiple channels along the third direction are respectively connected to the first header 11 and the second header 12.

[0075] Optionally, the thickness direction of the first heat exchange tube 13 is perpendicular to the first direction.

[0076] In some embodiments of the present invention, Figure 4As shown, the second heat exchanger 2 includes a third header 21, a fourth header 22 and a plurality of second heat exchange tubes 23. The third header 21 and the fourth header 22 extend along the first direction and are spaced apart along the third direction. The plurality of second heat exchange tubes 23 are spaced apart along the first direction. The two ends of the second heat exchange tubes 23 along the third direction are respectively connected to the third header 21 and the fourth header 22. The second heat exchange flow path 24 flows through the third header 21, the fourth header 22 and part of the second heat exchange tubes 23. The third header 21 and the first header 11 are located on the same side of the third direction, and the second header 12 and the fourth header 22 are located on the same side of the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0077] It can be understood that the second heat exchange flow path 24 flows through part or all of the second heat exchange tubes 23 and the third header 21 and the fourth header 22 in the portion opposite to the second heat exchange tubes 23 of the second heat exchange flow path 24 .

[0078] Optionally, the second heat exchange tube 23 is a flat heat exchange tube, and the second heat exchange tube 23 may have one or more channels. When there are multiple channels in the second heat exchange tube 23, the two ends of the multiple channels along the third direction are respectively connected to the third header 21 and the fourth header 22.

[0079] Optionally, the thickness direction of the second heat exchange tube 23 is perpendicular to the first direction.

[0080] In some embodiments of the present invention, Figure 2 、 Figure 4 and Figure 5 As shown, the multiple first heat exchange paths 14 include a first sub-heat exchange path 141 and a second sub-heat exchange path 142. At least a portion of the path of the second heat exchanger 2, located along the first direction and proximate to the first sub-heat exchange path 141, is connected between the first sub-heat exchange path 141 and the second sub-heat exchange path 142. During the flow of the heat exchange medium, the heat exchange medium may first flow into the first sub-heat exchange path 141, then flow to at least a portion of the second heat exchange path 24 located along the first direction and proximate to the first sub-heat exchange path 141, and then flow to the second sub-heat exchange path 142. During the flow of the heat exchange medium, when the first direction is vertical, the heat exchange medium can be prevented from flowing from the lower end of the first heat exchanger 1 to the upper end of the second heat exchanger 2. This can reduce pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving heat exchange efficiency.

[0081] Among them, there can be one second heat exchange flow path 24. After flowing through the first sub-heat exchange flow path 141, the heat exchange medium flows to the second heat exchange flow path 24, and then flows to the second sub-heat exchange flow path 142 after completely flowing through the second heat exchanger 2; there can be multiple second heat exchange flow paths 24. After flowing through the first sub-heat exchange flow path 141, the heat exchange medium can flow to at least one second heat exchange flow path 24 close to the first sub-heat exchange flow path 141 along the first direction and then flow to the second sub-heat exchange flow path 142. When the second heat exchange flow path 24 has not completely flowed out, it flows to the remaining second heat exchange flow paths 24.

[0082] In some embodiments of the present invention, there are multiple second heat exchange flow paths 24, which are arranged along the first direction, and the multiple first heat exchange flow paths 14 and the multiple second heat exchange flow paths 24 are alternately connected. This can reduce the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0083] It can be understood that during the flow of the heat exchange medium, the heat exchange medium sequentially flows through the first heat exchange path 14, the second heat exchange path 24, the first heat exchange path 14, the second heat exchange path 24, and so on. The heat exchange medium in the multiple first heat exchange paths 14 in the first heat exchanger 1 generally flows in the first direction, that is, flows sequentially from the first heat exchange path 14 at one end of the first direction to the first heat exchange path 14 at the other end of the first direction. The heat exchange medium in the multiple second heat exchange paths 24 in the second heat exchanger 2 generally flows in the first direction, that is, flows sequentially from the second heat exchange path 24 at one end of the first direction to the second heat exchange path 24 at the other end of the first direction. Moreover, the flow direction of the heat exchange medium in the first heat exchanger 1 along the first direction is the same as the flow direction of the heat exchange medium in the second heat exchanger 2 along the first direction.

[0084] In addition, if Figure 4 As shown, the second heat exchange flow path 24 flows through a portion of the second heat exchange tubes 23 and the portions of the third header 21 and the fourth header 22 opposite the second heat exchange tubes 23 of the second heat exchange flow path 24. The second heat exchange tubes 23 of the plurality of second heat exchange flow paths 24 are arranged along the first direction. Specifically, when there are multiple second heat exchange flow paths 24, the plurality of second heat exchange tubes 23 are divided into multiple groups. The plurality of groups of second heat exchange tubes 23 are arranged along the first direction. The plurality of groups of second heat exchange tubes 23 belong to the plurality of second heat exchange flow paths 24, and each group of second heat exchange tubes 23 may include one or more second heat exchange tubes 23.

[0085] In a specific embodiment of the present invention, Figure 2 、 Figure 4 and Figure 5As shown, the multiple second heat exchange paths 24 include a third sub-heat exchange path 241 and a fourth sub-heat exchange path 242. Along the first direction, the third sub-heat exchange path 241 and the first sub-heat exchange path 141 are located on the same side, the third sub-heat exchange path 241 is connected between the first sub-heat exchange path 141 and the second sub-heat exchange path 142, and the fourth sub-heat exchange path 242 is connected to the end of the second heat exchange path 24 away from the first heat exchange path 14.

[0086] When the first direction is the up and down direction, the first sub-heat exchange path 141 can be located above the second sub-heat exchange path 142, and the third sub-heat exchange path 241 can be located above the fourth sub-heat exchange path 242. During the flow of the heat exchange medium, the heat exchange medium can first flow through the first sub-heat exchange path 141, then flow to the third sub-heat exchange path 241, then flow to the second sub-heat exchange path 142, and finally flow to the fourth sub-heat exchange path 242, that is, the heat exchange medium flows through the upper part of the first heat exchanger 1, the upper part of the second heat exchanger 2, the lower part of the first heat exchanger 1, and the lower part of the second heat exchanger 2 in sequence, ensuring that the direction of the heat exchange medium flow is always consistent with the direction of gravity, reducing the pressure loss caused by overcoming gravity, thereby increasing the heat transfer coefficient and improving the heat exchange efficiency.

[0087] In some embodiments of the present invention, Figure 2 As shown, the first manifold 11 has a first inlet 111, which is located at the end of the first manifold 11 facing away from the second sub-heat exchange flow path 142. The first inlet 111 is connected to the end of the first sub-heat exchange flow path 141 facing away from the third sub-heat exchange flow path 241. As a result, the heat exchange medium can first enter the first sub-heat exchange flow path 141 through the first inlet 111.

[0088] In some embodiments of the present invention, Figure 4 As shown, the third manifold 21 has an outlet 211, which is arranged at the end of the second manifold 12 that is away from the third sub-heat exchange path 241, and the outlet 211 is connected to the end of the fourth sub-heat exchange path 242 that is away from the second sub-heat exchange path 142, thereby allowing the heat exchange medium flowing through the fourth sub-heat exchange path 242 to flow out of the heat exchanger assembly 10 through the outlet 211.

[0089] In some embodiments of the present invention, the first manifold 11 has a second inlet 113, which is connected to the end of the second sub-heat exchange path 142 facing away from the fourth sub-heat exchange path 242, or the fourth manifold 22 has a second inlet 113, which is connected to the end of the fourth sub-heat exchange path 242 near the second sub-heat exchange path 142. Heat exchange medium can flow into the entire heat exchanger assembly 10 from the second inlet 113. When the second inlet 113 is connected to the end of the second sub-heat exchange path 142 facing away from the fourth sub-heat exchange path 242, the heat exchange medium flows only through the second sub-heat exchange path 142 and the fourth sub-heat exchange path 242. When the second inlet 113 is connected to the end of the fourth sub-heat exchange path 242 near the second sub-heat exchange path 142, the heat exchange medium flows only through the fourth sub-heat exchange path 242.

[0090] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the first heat exchanger 1 is located on the leeward side of the second heat exchanger 2. When the heat exchanger assembly 10 is applied to a vehicle and located in the front cabin of the vehicle, the front side of the vehicle has a front grille for air intake, such as Figure 5 As shown, the first heat exchanger 1 is located on the side of the second heat exchanger 2 away from the front grille, and the lower part of the first heat exchanger 1 and the lower part of the second heat exchanger 2 are opposite to the front grille.

[0091] According to whether the heat exchanger assembly 10 is facing the front grille opening, that is, whether the air is directly blown, the heat exchanger assembly 10 can be divided into a direct air blow area and a non-direct air blow area. According to the air inlet position of the heat exchanger assembly 10, the heat exchanger assembly 10 can be divided into a windward side area and a leeward side area. Taking both into consideration, the heat exchanger assembly 10 can be divided into four areas: a direct air blow windward side area a, a non-direct air blow windward side area b, a direct air blow leeward side area c, and a non-direct air blow leeward side area d. Assuming the air inlet temperature is T and the heat exchange area is A, the air inlet temperature and heat exchange area of each area have the following relationship: Ta <Tb<Tc<Td,Aa=Ac<Ab=Ad。

[0092] Among them, Ta is the inlet air temperature of area a on the windward side where the air is directly blown, Tb is the inlet air temperature of area b on the windward side where the air is not directly blown, Tc is the inlet air temperature of area c on the leeward side where the air is directly blown, and Td is the inlet air temperature of area d on the leeward side where the air is not directly blown; Aa is the heat exchange area of area a on the windward side where the air is directly blown, Ab is the heat exchange area of area b on the windward side where the air is not directly blown, Ac is the heat exchange area of area c on the leeward side where the air is directly blown, and Ad is the heat exchange area of area d on the leeward side where the air is not directly blown.

[0093] The heat exchange medium can be a refrigerant. According to the different states of the refrigerant, the heat exchanger assembly 10 can be divided into a superheated gas zone I, a gas-liquid two-phase zone II, and a subcooled liquid zone III. Let the refrigerant temperature be T, the refrigerant density be ρ, and the required heat exchange amount be Q. Then, the following relationships exist between the refrigerant temperature and the required heat exchange amount in each zone: TI>TII>TIII, QI≈QIII<QII. Here, TI is the refrigerant temperature in the superheated gas zone I; TII is the refrigerant temperature in the gas-liquid two-phase zone II; TIII is the refrigerant temperature in the subcooled liquid zone III; QI is the required heat exchange amount in the superheated gas zone I; QII is the required heat exchange amount in the gas-liquid two-phase zone II; QIII is the required heat exchange amount in the subcooled liquid zone III.

[0094] According to the principles of heat transfer, the smaller the heat transfer temperature difference, the smaller the irreversible heat transfer loss; the larger the heat exchange amount, the larger the required heat exchange area. Therefore, to reduce the heat transfer temperature difference in different refrigerant state zones to reduce heat transfer losses and at the same time match the heat exchange area according to the heat exchange requirements of each zone, this patent divides the heat exchanger assembly 10 into four processes, namely the first sub-heat exchange flow path 141, the third sub-heat exchange flow path 241, the second sub-heat exchange flow path 142, and the fourth sub-heat exchange flow path 242. The gas-liquid two-phase zone II is basically located in the third sub-heat exchange flow path 241 on the windward side. Since the inlet air temperature on the windward side is lower than that on the leeward side, the heat exchange temperature difference between the refrigerant in the gas-liquid two-phase zone II and the inlet air is increased, strengthening the heat exchange.

[0095] In some embodiments of the present invention, such as Figure 2 , Figure 4 and Figure 5 shown, the number of the first heat exchange tubes 13 in the first sub-heat exchange flow path 141 is N1, the number of the first heat exchange tubes 13 in the second sub-heat exchange flow path 142 is N2, the number of the second heat exchange tubes 23 in the third sub-heat exchange flow path 241 is N3, and the number of the second heat exchange tubes 23 in the fourth sub-heat exchange flow path 242 is N4, and it satisfies: N3>N1>N2>N4.

[0096] Refer to Figure 5The high-temperature gaseous refrigerant in the superheated gas zone I enters the first sub-heat exchange flow path 141 in the upper part of the first heat exchanger 1 through the first inlet 111 at the top of the first heat exchanger 1. Since the first sub-heat exchange flow path 141 is located in the leeward side area where the air is not directly blown, the heat exchange area is large and the heat exchange demand of the superheated gas is small. Therefore, the cooled refrigerant will enter the gas-liquid two-phase zone II and be converted into wet steam with a higher dryness. The wet steam enters the third sub-heat exchange flow path 241 in the upper part of the second heat exchanger 2 through the second header 12 and the fourth header 22. The third sub-heat exchange flow path 241 is located in the windward side area where the air is not directly blown. The third sub-heat exchange flow path 241 has a large heat exchange area and a high heat exchange demand for the refrigerant in the liquid two-phase zone II. Therefore, after the wet steam undergoes intense heat exchange with the windward air, the dryness decreases, gradually approaches the dew point, and is even completely condensed into liquid refrigerant. The refrigerant flowing out of the third heat exchange sub-path 241 passes through the first and third headers 11 and 21 and enters the second heat exchange sub-path 142 at the bottom of the first heat exchanger 1. The second heat exchange sub-path 142 is primarily located on the leeward side of the incoming airflow. Due to its small heat exchange area and relatively low refrigerant heat exchange requirements, the refrigerant exiting the second heat exchange sub-path 142 is completely converted into a subcooled liquid after further heat exchange with the air. The subcooled liquid then passes through the second and fourth headers 12 and 22 and enters the fourth heat exchange sub-path 242 at the bottom of the second heat exchanger 2. Located on the windward side of the incoming airflow, the fourth heat exchange sub-path 242 has a small heat exchange area and low refrigerant heat exchange requirements. Therefore, the subcooled liquid refrigerant further increases in subcooling after heat exchange with the incoming air before exiting the heat exchanger assembly 10 through the refrigerant outlet 211 at the bottom of the second heat exchanger 2.

[0097] In the present application, the largest number of heat exchange tubes is allocated to the third sub-heat exchange flow path 241 located at the upper part of the second heat exchanger 2, so that the gas-liquid two-phase zone II is as close to the windward side as possible, thereby increasing the heat exchange temperature difference and improving the heat exchange efficiency.

[0098] Optionally, N1 and N3 satisfy: 1.2N1≤N3≤1.4N1.

[0099] Optionally, N1 and N2 satisfy: 0.4N1≤N2≤0.6N1.

[0100] Optionally, N1 and N4 satisfy: 0.2N1≤N4≤0.3N1.

[0101] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first manifold 11 has a first partition 112 in it, and two adjacent first heat exchange paths 14 are separated by the first partition 112. Figure 2In the example shown, there are two first heat exchange paths 14, namely the first sub-heat exchange path 141 and the second sub-heat exchange path 142. The first partition 112 is arranged between the first sub-heat exchange path 141 and the second sub-heat exchange path 142, so that the first sub-heat exchange path 141 and the second sub-heat exchange path 142 can be separated from each other and independent of each other through the first partition 112.

[0102] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second manifold 12 has a second partition 121, and two adjacent first heat exchange paths 14 are separated by the second partition 121. Figure 2 In the example shown, the first heat exchange path 14 is divided into two, namely the first sub-heat exchange path 141 and the second sub-heat exchange path 142. The second partition 121 is arranged between the first sub-heat exchange path 141 and the second sub-heat exchange path 142, so that the first sub-heat exchange path 141 and the second sub-heat exchange path 142 can be separated from each other by the second partition 121 and are independent of each other.

[0103] Further, if Figure 2 As shown, the first partition plate 112 and the second partition plate 121 are symmetrically arranged. When the first direction is the up-down direction, the first partition plate 112 and the second partition plate 121 have the same height.

[0104] In addition, when the number of first heat exchange paths 14 is greater than two, a plurality of first partitions 112 are arranged at intervals along the first direction, and a plurality of second partitions 121 are arranged at intervals along the first direction. Along the first direction, a first partition 112 and a second partition 121 are provided between any two adjacent first heat exchange paths 14.

[0105] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the second heat exchange flow paths 24 are arranged in a plurality along the first direction, and the third manifold 21 has a third partition 212, and two adjacent second heat exchange flow paths 24 are separated by the third partition 212. For example, Figure 4 In the example shown, there are two second heat exchange paths 24, namely the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242. The third partition plate 212 is arranged between the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242, so that the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242 can be separated from each other and independent of each other through the third partition plate 212.

[0106] In some embodiments of the present invention, Figure 1 and Figure 4As shown, the second heat exchange flow paths 24 are arranged in a plurality along the first direction, and the fourth manifold 22 has a fourth partition 221, and two adjacent second heat exchange flow paths 24 are separated by the fourth partition 221. For example, Figure 4 In the example shown, there are two second heat exchange paths 24, namely the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242. The fourth partition plate 221 is arranged between the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242, so that the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242 can be separated from each other and independent of each other by the fourth partition plate 221.

[0107] Furthermore, if Figure 4 As shown, the third partition plate 212 and the fourth partition plate 221 are symmetrically arranged. When the first direction is the up-down direction, the third partition plate 212 and the fourth partition plate 221 have the same height.

[0108] In addition, when the number of second heat exchange paths 24 is greater than two, the third partition plates 212 are multiple and spaced apart along the first direction, and the fourth partition plates 221 are multiple and spaced apart along the first direction. Along the first direction, a third partition plate 212 and a fourth partition plate 221 are provided between any two adjacent second heat exchange paths 24.

[0109] In some embodiments of the present invention, the first collecting pipe 11 has a first inlet 111, which is connected to a first heat exchange flow path 14 located at the end. The total number of first heat exchange flow paths 14 and second heat exchange flow paths 24 is greater than or equal to 4. Among the four adjacent first heat exchange flow paths 14 and second heat exchange flow paths 24, the first partition 112 between two adjacent first heat exchange flow paths 14 is closer to the first inlet 111 along the first direction relative to the third partition 212 between two adjacent second heat exchange flow paths 24, thereby facilitating the connection between multiple flow paths and facilitating the distribution of the number of heat exchange tubes.

[0110] For example, in Figure 1 、 Figure 2 and Figure 4In the example shown, there are two first heat exchange paths 14, namely the first sub-heat exchange path 141 and the second sub-heat exchange path 142, the first partition 112 and the second partition 121 are arranged between the first sub-heat exchange path 141 and the second sub-heat exchange path 142, the second heat exchange path 24 is two, namely the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242, the third plate and the fourth partition 221 are arranged between the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242, the first collecting pipe 11 has a first inlet 111, the first sub-heat exchange path 141 is connected to the first inlet 111, and the first partition 112 and the second partition 121 are closer to the first inlet 111 than the third partition 212 and the fourth partition 221. When the first inlet 111 is located above the first manifold 11 , the first partition 112 and the second partition 121 are located above the third partition 212 and the fourth partition 221 , that is, the height of the third partition 212 and the fourth partition 221 is lower than that of the first partition 112 and the second partition 121 .

[0111] In some embodiments of the present invention, two adjacent first heat exchange flow paths 14 and second heat exchange flow paths 24 are connected through a first hole group 122 provided on the first header 11 or the second header 12 and a second hole group 222 provided on the fourth header 22 or the third header 21. The interconnected first hole group 122 and second hole group 222 are opposite and connected. This facilitates communication between the two adjacent first heat exchange flow paths 14 and the second heat exchange flow paths 24.

[0112] For example, in Figure 1 、 Figure 2 and Figure 4 In the example shown, there are two first heat exchange paths 14, namely the first sub-heat exchange path 141 and the second sub-heat exchange path 142, and there are two second heat exchange paths 24, namely the third sub-heat exchange path 241 and the fourth sub-heat exchange path 242. The first sub-heat exchange path 141, the third sub-heat exchange path 241, the second sub-heat exchange path 142 and the fourth sub-heat exchange path 242 are connected in sequence. Among them, the first sub-heat exchange flow path 141 and the third sub-heat exchange flow path 241 are connected through the first hole group 122 provided on the second collecting pipe 12 and the second hole group 222 provided on the fourth collecting pipe 22, the third sub-heat exchange flow path 241 and the second sub-heat exchange flow path 142 are connected through the second hole group 222 provided on the third collecting pipe 21 and the first hole group 122 provided on the first collecting pipe 11, and the second sub-heat exchange flow path 142 and the fourth sub-heat exchange flow path 242 are connected through the first hole group 122 provided on the second collecting pipe 12 and the second hole group 222 provided on the fourth collecting pipe 22.

[0113] Further, if Figure 2 and Figure 4As shown, the first hole group 122 on the second header 12 connecting the first sub-heat exchange flow path 141 and the third sub-heat exchange flow path 241 is located above the second partition 121, and the second hole group 222 on the fourth header 22 connecting the first sub-heat exchange flow path 141 and the third sub-heat exchange flow path 241 is located above the fourth partition 221; the second hole group 222 on the third header 21 connecting the third sub-heat exchange flow path 241 and the second sub-heat exchange flow path 142 is located above the third partition 212. On the other hand, the first hole group 122 on the first collecting pipe 11 connecting the third sub-heat exchange flow path 241 and the second sub-heat exchange flow path 142 is located below the first partition 112; the first hole group 122 on the second collecting pipe 12 connecting the second sub-heat exchange flow path 142 and the fourth sub-heat exchange flow path 242 is located below the second partition 121, and the second hole group 222 on the fourth collecting pipe 22 connecting the second sub-heat exchange flow path 142 and the fourth sub-heat exchange flow path 242 is located below the fourth partition 221.

[0114] In some embodiments of the present invention, considering that the volume of liquid is smaller than that of gas under the same mass, the required flow area is smaller, such as Figure 2-Figure 4 As shown, the first hole group 122 includes a plurality of first holes 123 spaced apart along a first direction. The opening area of the plurality of first holes 123 gradually decreases along the first direction and along the flow direction of the fluid in the plurality of first heat exchange paths 14. The second hole group 222 includes a plurality of second holes 223 spaced apart along the first direction. The opening area of the plurality of second holes 223 gradually decreases along the first direction and along the flow direction of the fluid in the plurality of second heat exchange paths 24. This improves the uniformity of refrigerant distribution, making the overall heat exchange of the heat exchanger assembly 10 more uniform, thereby enhancing the heat exchange effect and achieving efficient heat exchange capacity of the heat exchanger assembly 10.

[0115] Specifically, in the plurality of first holes 123 of the first hole group 122 or the plurality of second holes 223 of the second hole group 222, the area of the larger of the two adjacent openings is Sn-1, and the area of the smaller opening is Sn. Ignoring differences in flow rates between the openings, the areas of the upper and lower adjacent openings must satisfy the following relationship: Sn-1 / Sn = ρn / ρn-1. ρn-1 and ρn are the refrigerant densities at the upper and lower adjacent openings, respectively, which are related to the refrigerant dryness and are empirically derived.

[0116] For example, when the first direction is the up and down direction, when the heat exchange medium of the first heat exchanger 1 and the second heat exchanger 2 flows from top to bottom, in the direction from top to bottom, the opening area of the multiple first holes 123 gradually decreases, and the opening area of the multiple second holes 223 gradually decreases.

[0117] Further, if Figure 2 and Figure 4As shown, the first hole group 122 includes a plurality of first holes 123 spaced apart along a first direction, and the second hole group 222 includes a plurality of second holes 223 spaced apart along the first direction. The number of interconnected first holes 123 in the first hole group 122 and the number of interconnected second holes 223 in the second hole group 222 are the same and correspond one to one. This facilitates the flow of refrigerant and helps improve the uniformity of refrigerant distribution, making the overall heat exchange of the heat exchanger assembly 10 more uniform, thereby improving the heat exchange effect.

[0118] In some embodiments of the present invention, the first hole group 122 includes a plurality of first holes 123 spaced apart along the first direction, and the shape of the first holes 123 is an oblong hole extending along the first direction, i.e., a waist-shaped hole. The second hole group 222 includes a plurality of second holes 223 spaced apart along the first direction, and the shape of the first holes 123 is an oblong hole extending along the first direction, i.e., a waist-shaped hole.

[0119] In other embodiments of the present invention, two adjacent first heat exchange paths 14 and second heat exchange paths 24 are connected by a refrigeration pipe, and the refrigeration pipe is located outside the first header 11, the second header 12, the third header 21 and the fourth header 22. One end of the refrigeration pipe is connected to one of the first header 11 and the second header 12, and the other end is connected to one of the third header 21 and the fourth header 22.

[0120] The following describes a thermal management system 100 according to an embodiment of the present invention.

[0121] The thermal management system 100 according to the embodiment of the present invention includes the heat exchanger assembly 10 described above.

[0122] According to the thermal management system 100 of an embodiment of the present invention, by setting the above-mentioned heat exchanger assembly 10, a first heat exchanger 1 and a second heat exchanger 2 stacked along the second direction are set, and the first heat exchanger 1 includes a plurality of first heat exchange paths 14 arranged along the first direction, and the second heat exchanger 2 includes a second heat exchange path 24, at least part of the second heat exchange path 24 is connected between the two first heat exchange paths 14, so that part of the plurality of first heat exchange paths 14 can be located upstream of the second heat exchange path 24, and part can be located downstream of the second heat exchange path 24, avoiding the flow of the first heat exchange path 14 completely before flowing into the second heat exchange path 24, and can reduce the pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving the heat exchange efficiency.

[0123] In some embodiments of the present invention, Figure 6 As shown, the thermal management system 100 further includes a compressor 20, an evaporator 30, and / or a battery cold plate 40, and / or an electric drive direct cooling module 50. It is understood that the thermal management system 100 further includes at least one of the evaporator 30, the battery cold plate 40, and the electric drive direct cooling module 50, as well as the compressor 20.

[0124] Specifically, the compressor 20 has an exhaust port 201 and a return air port 202, the inlet of the heat exchanger assembly 10 is connected to the exhaust port 201 of the compressor 20, one end of the evaporator 30 is connected to the outlet 211 of the heat exchanger assembly 10, and the other end is connected to the return air port 202 of the compressor 20, one end of the battery cold plate 40 is connected to the outlet 211 of the heat exchanger assembly 10, and the other end is connected to the return air port 202 of the compressor 20, one end of the electric drive direct cooling module 50 is connected to the outlet 211 of the heat exchanger assembly 10, and the other end is connected to the return air port 202 of the compressor 20. When the thermal management system 100 includes two or three of the evaporator 30, the battery cold plate 40 and the electric drive direct cooling module 50 at the same time, two or three of the evaporator 30, the battery cold plate 40 and the electric drive direct cooling module 50 can be arranged in parallel, so that the target temperatures of the evaporator 30, the battery cold plate 40 and the electric drive direct cooling module 50 can be accurately controlled, and the high temperature of the suction port of the compressor 20 can be avoided, thereby ensuring the reliability of the operation of the compressor 20.

[0125] Among them, when the thermal management system 100 is used in a vehicle, the evaporator 30 can be used to cool and / or dehumidify the passenger compartment, the battery cold plate 40 can be arranged in the battery pack of the vehicle to cool or heat the battery module in the battery pack, the electric drive direct cooling module 50 is used to cool the vehicle's electric drive module or recover the heat of the electric drive module, and the heat exchanger assembly 10 can be arranged outside the passenger compartment, for example, in the front engine compartment.

[0126] For example, when the thermal management system 100 includes the compressor 20 and the evaporator 30, as shown in FIG. Figure 7 As shown, the high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 enters the heat exchanger assembly 10 for condensation and heat release. The condensed high-pressure and medium-temperature liquid refrigerant enters the evaporator 30 to evaporate and absorb heat, and then becomes a low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 20 to achieve passenger compartment cooling.

[0127] When the thermal management system 100 includes the compressor 20 and the battery cold plate 40, as shown in FIG. Figure 7 As shown, the high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 enters the heat exchanger assembly 10 for condensation and heat release. The condensed high-pressure and medium-temperature liquid refrigerant enters the battery cold plate 40 to evaporate and absorb heat, and then becomes a low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 20 to cool the battery modules in the battery pack.

[0128] When the thermal management system 100 includes a compressor 20 and an electric drive direct cooling module 50, as shown in FIG. Figure 7As shown, the high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 enters the heat exchanger assembly 10 for condensation and heat release. The condensed high-pressure and medium-temperature liquid refrigerant enters the electric drive direct cooling module 50 to evaporate and absorb heat, and then becomes a low-temperature and low-pressure gaseous refrigerant, and then flows back to the compressor 20 to cool the electric drive module.

[0129] When the thermal management system 100 includes the compressor 20, the evaporator 30, the battery cold plate 40 and the electric drive direct cooling module 50, as shown in FIG. Figure 7 As shown, the refrigerant that has completed heat exchange in the heat exchanger assembly 10 enters the evaporator 30, the battery cold plate 40 and the electric drive direct cooling module 50 in three routes for evaporation and heat absorption, and then flows back to the compressor 20.

[0130] In some embodiments of the present invention, Figure 6 As shown, a first expansion valve 301 is provided between the evaporator 30 and the outlet 211 of the heat exchanger assembly 10, a second expansion valve 401 is provided between the battery cold plate 40 and the outlet 211 of the heat exchanger assembly 10, and a third expansion valve 501 is provided between the electric drive direct cooling module 50 and the outlet 211 of the heat exchanger assembly 10. The first expansion valve 301, the second expansion valve 401, and the third expansion valve 501 can realize the opening and closing of the corresponding flow paths. When the thermal management system 100 includes the evaporator 30, the battery cold plate 40, and the electric drive direct cooling module 50, the first expansion valve 301, the second expansion valve 401, and the third expansion valve 501 can be controlled to control whether the evaporator 30, the battery cold plate 40, and the electric drive direct cooling module 50 participate in heat exchange. At the same time, the first expansion valve 301, the second expansion valve 401, and the third expansion valve 501 have a throttling and pressure reduction function.

[0131] In some embodiments of the present invention, Figure 6 As shown, when the thermal management system 100 includes a battery cold plate 40, a first throttle valve 402 is provided between the battery cold plate 40 and the return air port 202 of the compressor 20. The first throttle valve 402 can play a role in throttling and reducing pressure to prevent the refrigerant pressure flowing out of the battery cold plate 40 from being too high.

[0132] In some embodiments of the present invention, Figure 6 As shown, when the thermal management system 100 includes the electric drive direct cooling module 50, a second throttle valve 502 is provided between the electric drive direct cooling module 50 and the return air port 202 of the compressor 20. The second throttle valve 502 can throttle and reduce the pressure to prevent the refrigerant pressure flowing out of the electric drive direct cooling module 50 from being too high.

[0133] In some embodiments of the present invention, Figure 6As shown, the inlet includes a first inlet 111 and a second inlet 113. The flow from the first inlet 111 to the outlet 211 passes through all of the first heat exchange flow path 14 and the second heat exchange flow path 24. The flow from the second inlet 113 to the outlet 211 passes through part of the first heat exchange flow path 14 and / or part of the second heat exchange flow path 24. The first inlet 111 and the second inlet 113 are both connected to the exhaust port 201 of the compressor 20. Therefore, the first inlet 111 or the second inlet 113 can be connected to the exhaust port 201 of the compressor 20 as required to meet the heat exchange requirements.

[0134] In some embodiments of the present invention, Figure 6 As shown, the thermal management system 100 further includes a first pipeline 801 and a first three-way valve 701. One end of the first pipeline 801 is connected to the first inlet 111. The first pipeline 801, the second inlet 113, and the exhaust port 201 of the compressor 20 are connected via the first three-way valve 701. Thus, the first three-way valve 701 enables at least one of the first inlet 111 and the second inlet 113 to be connected to the exhaust port 201 of the compressor 20.

[0135] For example, Figure 7 As shown, the thermal management system 100 has a three-way cooling mode for the passenger compartment, battery, and electric drive. In this mode, to meet the cooling needs of the passenger compartment, battery, and electric drive when all three are turned on, the first inlet 111 is connected to the exhaust port 201 of the compressor 20 via the first three-way valve 701, and the second inlet 113 is disconnected from the exhaust port 201 of the compressor 20. The high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 passes through the first three-way valve 701 and enters the first inlet 111, then enters the heat exchanger assembly 10, and sequentially passes through the superheated gas zone I, the gas-liquid two-phase zone II, and the subcooled liquid zone III of the heat exchanger assembly 10 to condense and release heat. The condensed high-pressure and medium-temperature liquid refrigerant passes through the second expansion valve 401 for throttling and pressure reduction and flows into the battery cold plate 40. After evaporation and absorption of heat in the battery cold plate 40, it becomes a low-temperature and low-pressure gaseous refrigerant. After passing through the first throttle valve 401, the high-pressure and medium-temperature liquid refrigerant is condensed and releases heat. 02; One path passes through the first expansion valve 301 for throttling and reducing pressure and flows into the evaporator 30, where it evaporates and absorbs heat and becomes a low-temperature and low-pressure gaseous refrigerant; the other path passes through the third expansion valve 501 for throttling and reducing pressure and flows into the electric drive direct cooling module 50, where it evaporates and absorbs heat and becomes a low-temperature and low-pressure gaseous refrigerant, flows through the second throttle valve 502 and merges with the refrigerant flowing out of the evaporator 30 and the first throttle valve 402 and flows back to the compressor 20, completing the three-open refrigeration cycle of the passenger compartment, battery and electric drive.

[0136] In addition, if Figure 6 As shown, the thermal management system 100 also includes a gas-liquid separator 903 , which is connected to the return air port 202 of the compressor 20 . The refrigerant flowing back to the compressor 20 first flows through the gas-liquid separator 903 and then flows back to the return air port 202 of the compressor 20 .

[0137] For example, Figure 8 As shown, thermal management system 100 operates in a low-ambient-temperature battery cooling mode. In this mode, to meet the battery cooling requirements under low ambient temperatures, second inlet 113 is connected to exhaust port 201 of compressor 20 via first three-way valve 701, while first inlet 111 is disconnected from exhaust port 201 of compressor 20. High-temperature, high-pressure gaseous refrigerant from exhaust port 201 of compressor 20 passes through first three-way valve 701 and enters second inlet 113. It then directly enters supercooled liquid zone III of heat exchanger assembly 10 for condensation and heat release. The condensed high-pressure, medium-temperature liquid refrigerant then passes through second expansion valve 401, throttling and reducing its pressure before flowing into battery cold plate 40. There, it evaporates and absorbs heat, transforming into low-temperature, low-pressure gaseous refrigerant. The refrigerant then flows through first throttle valve 402, enters gas-liquid separator 903, and then returns to compressor 20, completing the low-ambient-temperature battery cooling cycle.

[0138] In some embodiments of the present invention, Figure 6 As shown, the thermal management system 100 further includes a condenser 60, which is used to heat the passenger compartment. The condenser 60 is connected in parallel with the heat exchanger assembly 10. The high-temperature, high-pressure refrigerant discharged from the exhaust port 201 of the compressor 20 can flow to the condenser 60, where it condenses and dissipates heat, thereby heating the passenger compartment.

[0139] Furthermore, if Figure 6 As shown, the thermal management system 100 further includes a second pipeline 802 and a second three-way valve 702. One end of the second pipeline 802 is connected to the condenser 60. The second pipeline 802, the first pipeline 801, and the first inlet 111 are connected via the second three-way valve 702. Thus, the second three-way valve 702 can be used to connect at least one of the first inlet 111 and the second pipeline 802 to the exhaust port 201 of the compressor 20.

[0140] In some embodiments of the present invention, Figure 6 As shown, the end of the battery cold plate 40 facing away from the heat exchanger assembly 10 is connected to the exhaust port 201 of the compressor 20. High-temperature, high-pressure refrigerant from the exhaust port 201 of the compressor 20 can flow to the battery cold plate 40, where it condenses and dissipates heat. In relatively low-temperature environments, the battery cold plate 40 can be used to heat the battery pack.

[0141] Furthermore, if Figure 6 As shown, the thermal management system 100 further includes a third three-way valve 703. The end of the battery cold plate 40 facing away from the heat exchanger assembly 10, one end of the condenser 60, and the second pipe 802 are connected via the third three-way valve 703. This allows at least one of the condenser 60 and the battery cold plate 40 to be connected to the exhaust port 201 of the compressor 20.

[0142] For example, Figure 9 As shown, the thermal management system 100 has a dual-operation condition for passenger compartment and battery heating. Under this operating condition, in order to meet the dual-operation requirements of passenger compartment and battery heating, the first pipeline 801 is connected to the exhaust port 201 of the compressor 20 through the first three-way valve 701, the first inlet 111 and the second inlet 113 are disconnected from the exhaust port 201 of the compressor 20, the second pipeline 802 is connected to the first pipeline 801 through the second three-way valve 702, and the condenser 60 and the battery cold plate 40 are connected to the second pipeline 802 through the third three-way valve 703. The high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 first flows through the first three-way valve 701 to the first pipeline 801, then flows through the second three-way valve 702 to the second pipeline 802, and then passes through the third three-way valve 703 to be divided into two paths, one path enters the condenser 60 for condensation and heat release, and the other path enters the battery cold plate 40 for condensation and heat release. The condensed high-pressure and medium-temperature liquid refrigerant passes through the second expansion valve 401 and merges with the refrigerant at the outlet of the condenser 60, and then passes through the third expansion valve 501 to enter the electric drive direct cooling module 50 for evaporation and heat absorption, and then passes through the second throttle valve 502 to flow into the gas-liquid separator 903, and finally flows back to the compressor 20, completing the passenger compartment + battery heating dual-open cycle, and the passenger compartment and battery pack heating effect is good.

[0143] For example, Figure 10 As shown, the thermal management system 100 has a 10℃-20℃ heating and dehumidification working condition. In order to meet the 10℃-20℃ heating and dehumidification requirements of the passenger compartment, the second inlet 113 is connected to the exhaust port 201 of the compressor 20 through the first three-way valve 701, the first inlet 111 is disconnected from the exhaust port 201 of the compressor 20, the first pipeline 801 and the second pipeline 802 are connected through the second three-way valve 702, and the condenser 60 and the second pipeline 802 are connected through the third three-way valve 703. The high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 is divided into two paths. One path first passes through the first three-way valve 701 to enter the first pipeline 801, then flows to the second pipeline 802 through the second three-way valve 702, and then enters the condenser 60 through the third three-way valve 703 for condensation and heat release. The other path passes through the first three-way valve 701 and directly enters the supercooled liquid zone III in the heat exchanger assembly 10 for condensation and heat release, and then merges with the high-pressure and medium-temperature refrigerant at the outlet of the condenser 60, and then passes through the first expansion valve 301 to flow into the evaporator 30 for evaporation and heat absorption, and then flows into the gas-liquid separator 903, and finally flows back to the compressor 20, completing the 10℃-20℃ heating and dehumidification cycle.

[0144] For example, Figure 11As shown, the thermal management system 100 has a 0℃-10℃ heating and dehumidification working condition. In order to meet the 0℃-10℃ demand of the passenger compartment, under this working condition, the first pipeline 801 is connected to the exhaust port 201 of the compressor 20 through the first three-way valve 701, the second pipeline 802 is connected to the first pipeline 801 through the second three-way valve 702, and the condenser 60 is connected to the second pipeline 802 through the third three-way valve 703. The high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 first flows through the first three-way valve 701 to the first pipeline 801, then flows through the second three-way valve 702 to the second pipeline 802, and then enters the condenser 60 through the third three-way valve 703 for condensation and heat release. The condensed high-pressure and medium-temperature refrigerant is divided into two paths. One path passes through the first expansion valve 301 for throttling and pressure reduction to flow into the evaporator 30, and after evaporating and absorbing heat in the evaporator 30, it becomes a low-temperature and low-pressure gaseous refrigerant; the other path passes through the third expansion valve 501 for throttling and pressure reduction to flow into the electric drive direct cooling module 50, and after evaporating and absorbing heat in the electric drive direct cooling module 50, it becomes a low-temperature and low-pressure gaseous refrigerant, and after passing through the second throttle valve 502 and merging with the refrigerant at the outlet of the evaporator 30, it flows into the gas-liquid separator 903, and finally flows back to the compressor 20, completing the 0℃-10℃ heating and dehumidification cycle.

[0145] For example, Figure 12As shown, the thermal management system 100 has multiple operating conditions for heating and dehumidification, battery and electric drive cooling. In order to meet the multiple operating requirements for heating and dehumidification, battery and electric drive cooling, the first pipeline 801 and the second inlet 113 are connected to the exhaust port 201 of the compressor 20 through the first three-way valve 701, the second pipeline 802 and the first pipeline 801 are connected through the second three-way valve 702, and the condenser 60 and the second pipeline 802 are connected through the third three-way valve 703. The high-temperature and high-pressure gaseous refrigerant at the exhaust port 201 of the compressor 20 is divided into two paths. One path first flows through the first three-way valve 701 to the first pipeline 801, then flows through the second three-way valve 702 to the second pipeline 802, and flows through the third three-way valve 703 to enter the condenser 60 for condensation and heat release; the other path flows through the first three-way valve 701 to the second inlet 113 and directly enters the supercooled liquid area III of the heat exchanger assembly 10. The condensed high-pressure and medium-temperature refrigerant merges with the refrigerant at the outlet of the condenser 60, and is divided into three paths after merging. One path passes through the second expansion valve 401 for throttling and pressure reduction and flows into the battery cold plate 40, where it evaporates and absorbs heat and becomes The low-temperature, low-pressure gaseous refrigerant then flows through the first throttle valve 402; one path passes through the first expansion valve 301 for throttling and pressure reduction and flows into the evaporator 30, where it evaporates and absorbs heat and becomes a low-temperature, low-pressure gaseous refrigerant; the other path passes through the third expansion valve 501 for throttling and pressure reduction and flows into the electric drive direct cooling module 50, where it evaporates and absorbs heat and becomes a low-temperature, low-pressure gaseous refrigerant, flows through the second throttle valve 502 and merges with the low-temperature, low-pressure gaseous refrigerant at the outlet of the first throttle valve 402 and the outlet of the evaporator 30 and flows into the gas-liquid separator 903, and then flows back to the compressor 20, completing the multi-open cycle of heating and dehumidification, battery and electric drive cooling.

[0146] In some embodiments of the present invention, Figure 6 As shown, the thermal management system 100 further includes an electronic fan 901 , which is disposed on one side of the heat exchanger assembly 10 for accelerating heat exchange of the heat exchanger assembly 10 and improving heat exchange efficiency of the heat exchanger assembly 10 .

[0147] In some embodiments of the present invention, Figure 6 As shown, the thermal management system 100 further includes a PTC 902 (Positive Temperature Coefficient) for assisting the condenser 60 in heating and improving the heating effect on the passenger compartment.

[0148] The thermal management system 100 according to the present invention can meet the heat dissipation requirements under different ambient temperatures and heat exchange rates, improving system stability and heat dissipation performance. Furthermore, through circuit switching, waste heat recovery from the electric drive side is achieved to meet the heating requirements of the passenger compartment and the battery pack, reducing system power consumption and improving the system's Coefficient of Performance (COP).

[0149] Specifically, the present invention realizes the cooling requirements of the passenger compartment, battery, and electric drive system through a refrigerant circuit, eliminates the coolant side circuit and related components, has high heat exchange efficiency, precise temperature control, and reduces system cost; the present invention can meet the three-open heat dissipation requirements after the heat exchange on the electric drive side, and avoid insufficient heat dissipation in the front engine compartment causing the compressor 20 to limit the speed or shut down, resulting in problems such as poor passenger compartment comfort and limited battery overcharging; the heat exchanger assembly 10 of the present invention can realize circuit switching to meet the battery cooling requirements under low ambient temperature conditions, and avoid excessive heat dissipation in the front compartment causing low temperature on the battery side and lithium deposition in the battery pack.

[0150] The present invention can realize the comprehensive utilization of waste heat on the electric drive side, meet the needs of single-open heating on the passenger compartment side, single-open heating on the battery pack side and dual-open heating, and improve the system COP.

[0151] In addition, the present invention can realize circuit switching of heating and dehumidification conditions according to the ambient temperature. When the ambient temperature is high, heat can be dissipated through part of the circuit of the heat exchanger assembly 10. When the ambient temperature drops and the heating demand of the passenger compartment increases, the refrigerant circuit is switched to the electric drive side to recover waste heat, thereby realizing comprehensive and rational utilization of system energy.

[0152] In some embodiments of the present invention, the battery cold plate 40 is a single layer or multiple layers.

[0153] In some embodiments of the present invention, the heat pump system can be applicable to all refrigerants, such as R134a and R1234yf.

[0154] In some embodiments of the present invention, the thermal management system 100 also includes an electronically controlled cooling module, which is used to cool the electronic control system. One end of the electronically controlled cooling module can be connected to the outlet 211 of the heat exchanger assembly 10, and the other end is connected to the return air port 202 of the compressor 20. The electronically controlled cooling module can be connected in parallel with the battery cold plate 40, the evaporator 30 and the electric drive cooling module.

[0155] In the present invention, there is no restriction on the arrangement positions of the valve structures such as the first three-way valve 701, the second three-way valve 702, the third three-way valve 703, the first expansion valve 301, the second expansion valve 401, the third expansion valve 501, the first throttle valve 402 and the second throttle valve 502 and the heat exchanger assembly 10, and they can be arranged according to the actual requirements of the system. In addition, at least part of the valve structures such as the first three-way valve 701, the second three-way valve 702, the third three-way valve 703, the first expansion valve 301, the second expansion valve 401, the third expansion valve 501, the first throttle valve 402 and the second throttle valve 502 can be integrated.

[0156] Next, a vehicle according to an embodiment of the present invention will be described.

[0157] The vehicle according to the embodiment of the present invention includes the thermal management system 100 described above.

[0158] According to an embodiment of the present invention, a vehicle is provided with the aforementioned thermal management system 100, the aforementioned heat exchanger assembly 10, and a first heat exchanger 1 and a second heat exchanger 2 stacked in a second direction. The first heat exchanger 1 includes a plurality of first heat exchange paths 14 arranged in the first direction, and the second heat exchanger 2 includes a second heat exchange path 24, with at least a portion of the second heat exchange paths 24 connected between the two first heat exchange paths 14. This allows some of the plurality of first heat exchange paths 14 to be located upstream of the second heat exchange path 24, while others to be located downstream of the second heat exchange path 24. This prevents the heat exchange medium from flowing through the first heat exchange path 14 before flowing into the second heat exchange path 24. This reduces pressure loss caused by overcoming gravity during the flow of the heat exchange medium, thereby improving heat exchange efficiency. Throughout this specification, references to the terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do 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.

[0159] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A heat exchanger assembly, characterized in that: include: A first heat exchanger (1), the first heat exchanger (1) having a plurality of first heat exchange flow paths (14), the plurality of first heat exchange flow paths (14) being arranged along a first direction; A second heat exchanger (2), wherein the second heat exchanger (2) and the first heat exchanger (1) are stacked along a second direction, the first direction and the second direction being perpendicular to each other, the second heat exchanger (2) having a second heat exchange flow path (24), at least a portion of the second heat exchange flow path (24) being connected between two of the first heat exchange flow paths (14).

2. The heat exchanger assembly according to claim 1, characterized in that The first heat exchanger (1) comprises a first header (11), a second header (12) and a plurality of first heat exchange tubes (13); the first header (11) and the second header (12) extend along the first direction and are spaced apart along a third direction; the plurality of first heat exchange tubes (13) are spaced apart along the first direction; the first heat exchange tube (13) is connected to the first header (11) and the second header (12) at both ends along the third direction; the first heat exchange flow path (14) flows through the first header (11), the second header (12) and a portion of the first heat exchange tubes (13); and the first direction, the second direction and the third direction are perpendicular to each other.

3. The heat exchanger assembly according to claim 2, characterized in that The second heat exchanger (2) comprises a third header (21), a fourth header (22) and a plurality of second heat exchange tubes (23); the third header (21) and the fourth header (22) extend along the first direction and are spaced apart along the third direction; the plurality of second heat exchange tubes (23) are spaced apart along the first direction; the two ends of the second heat exchange tube (23) along the third direction are respectively connected to the third header (21) and the fourth header (22); the second heat exchange flow path (24) flows through the third header (21), the fourth header (22) and part of the second heat exchange tubes (23); the third header (21) and the first header (11) are located on the same side of the third direction; the second header (12) and the fourth header (22) are located on the same side of the third direction.

4. The heat exchanger assembly according to claim 3, characterized in that The plurality of first heat exchange paths (14) include a first sub-heat exchange path (141) and a second sub-heat exchange path (142), and at least a portion of the path of the second heat exchanger (2) at one end close to the first sub-heat exchange path (141) along the first direction is connected between the first sub-heat exchange path (141) and the second sub-heat exchange path (142).

5. The heat exchanger assembly according to claim 4, characterized in that There are a plurality of the second heat exchange flow paths (24), the plurality of the second heat exchange flow paths (24) are arranged along the first direction, and the plurality of the first heat exchange flow paths (14) and the plurality of the second heat exchange flow paths (24) are alternately connected.

6. The heat exchanger assembly according to claim 5, characterized in that The plurality of second heat exchange paths (24) include a third sub-heat exchange path (241) and a fourth sub-heat exchange path (242). Along the first direction, the third sub-heat exchange path (241) and the first sub-heat exchange path (141) are located on the same side. The third sub-heat exchange path (241) is connected between the first sub-heat exchange path (141) and the second sub-heat exchange path (142). The fourth sub-heat exchange path (242) is connected to an end of the second heat exchange path (24) that is away from the first heat exchange path (14).

7. The heat exchanger assembly according to claim 6, characterized in that The first header (11) has a first inlet (111), which is provided at an end of the first header (11) away from the second sub-heat exchange flow path (142), and is connected to an end of the first sub-heat exchange flow path (141) away from the third sub-heat exchange flow path (241); And / or, the third header (21) has an outlet (211), the outlet (211) is provided at an end of the second header (12) away from the third sub-heat exchange flow path (241), and the outlet (211) is communicated with an end of the fourth sub-heat exchange flow path (242) away from the second sub-heat exchange flow path (142); And / or, the first header (11) has a second inlet (113), and the second inlet (113) is connected to an end of the second sub-heat exchange flow path (142) away from the fourth sub-heat exchange flow path (242), or the fourth header (22) has a second inlet (113), and the second inlet (113) is connected to an end of the fourth sub-heat exchange flow path (242) close to the second sub-heat exchange flow path (142).

8. The heat exchanger assembly according to claim 7, characterized in that The number of the first heat exchange tubes (13) of the first sub-heat exchange flow path (141) is N1, the number of the first heat exchange tubes (13) of the second sub-heat exchange flow path (142) is N2, the number of the second heat exchange tubes (23) of the third sub-heat exchange flow path (241) is N3, and the number of the second heat exchange tubes (23) of the fourth sub-heat exchange flow path (242) is N4, and the following conditions are satisfied: N3>N1>N2>N4.

9. The heat exchanger assembly according to claim 8, characterized in that 1.2N1≤N3≤1.4N1; and / or, 0.4N1≤N2≤0.6N1; and / or, 0.2N1≤N4≤0.3N1.

10. The heat exchanger assembly according to claim 5, wherein: A first partition plate (112) is provided in the first collecting pipe (11), and two adjacent first heat exchange flow paths (14) are separated by the first partition plate (112); And / or, a second partition plate (121) is provided in the second collecting pipe (12), and two adjacent first heat exchange flow paths (14) are separated by the second partition plate (121); And / or, the second heat exchange flow paths (24) are multiple and arranged along the first direction, a third partition plate (212) is provided in the third manifold (21), and two adjacent second heat exchange flow paths (24) are separated by the third partition plate (212); And / or, the second heat exchange flow paths (24) are multiple and arranged along the first direction, the fourth manifold (22) has a fourth partition (221), and two adjacent second heat exchange flow paths (24) are separated by the fourth partition (221).

11. The heat exchanger assembly according to claim 10, wherein: The first collecting pipe (11) has a first partition (112) therein, the second collecting pipe (12) has a second partition (121) therein, and the first partition (112) and the second partition (121) are symmetrically arranged; And / or, the third manifold (21) has a third partition (212), the fourth manifold (22) has a fourth partition (221), and the third partition (212) and the fourth partition (221) are symmetrically arranged; And / or, the first collecting pipe (11) has a first inlet (111), the first inlet (111) is connected to one of the first heat exchange flow paths (14) located at the end, the total number of the first heat exchange flow paths (14) and the second heat exchange flow paths (24) is greater than or equal to 4, and among the four adjacent first heat exchange flow paths (14) and the second heat exchange flow paths (24), the first partition (112) between two adjacent first heat exchange flow paths (14) is closer to the first inlet (111) along the first direction than the third partition (212) between two adjacent second heat exchange flow paths (24).

12. The heat exchanger assembly according to claim 5, wherein: Two adjacent first heat exchange flow paths (14) and second heat exchange flow paths (24) are connected through a first hole group (122) provided on the first header (11) or the second header (12) and a second hole group (222) provided on the fourth header (22) or the third header (21).

13. The heat exchanger assembly according to claim 12, wherein: The first hole group (122) includes a plurality of first holes (123) spaced apart along the first direction, and the opening areas of the plurality of first holes (123) gradually decrease along the first direction and along the flow direction of the flowing medium of the plurality of first heat exchange flow paths (14); And / or, the second hole group (222) includes a plurality of second holes (223) spaced apart along the first direction, and the opening area of the plurality of second holes (223) gradually decreases along the first direction and along the flow direction of the flowing medium of the plurality of second heat exchange paths (24).

14. The heat exchanger assembly according to claim 13, wherein: The first hole group (122) includes a plurality of first holes (123) spaced apart along the first direction, and the second hole group (222) includes a plurality of second holes (223) spaced apart along the first direction, and the number of the first holes (123) of the first hole group (122) and the number of the second holes (223) of the second hole group (222) that are interconnected are the same and correspond one to one.

15. The heat exchanger assembly according to claim 13, wherein The first hole group (122) comprises a plurality of first holes (123) spaced apart along the first direction, and the first holes (123) are in the shape of oblong holes extending along the first direction; And / or, the second hole group (222) includes a plurality of second holes (223) spaced apart along the first direction, and the first holes (123) are in the shape of oblong holes extending along the first direction.

16. The heat exchanger assembly according to any one of claims 1 to 15, characterized in that: The first heat exchanger (1) is located on the leeward side of the second heat exchanger (2).

17. A thermal management system, characterized in that: Comprising a heat exchanger assembly (10) according to any one of claims 1-16.

18. The thermal management system according to claim 17, wherein: Also includes: A compressor (20), the compressor (20) having an exhaust port (201) and an air return port (202), the inlet of the heat exchanger assembly (10) being connected to the exhaust port (201) of the compressor (20); An evaporator (30), one end of the evaporator (30) is connected to the outlet (211) of the heat exchanger assembly (10), and the other end is connected to the return air port (202) of the compressor (20); and / or a battery cold plate (40), one end of the battery cold plate (40) is connected to the outlet (211) of the heat exchanger assembly (10), and the other end is connected to the return air port (202) of the compressor (20); and / or an electric drive direct cooling module, one end of the electric drive direct cooling module is connected to the outlet (211) of the heat exchanger assembly (10), and the other end is connected to the return air port (202) of the compressor (20).

19. The thermal management system according to claim 18, wherein: A first expansion valve (301) is provided between the evaporator (30) and the outlet (211) of the heat exchanger assembly (10); and / or, a second expansion valve (401) is provided between the battery cold plate (40) and the outlet (211) of the heat exchanger assembly (10); And / or, a third expansion valve (501) is provided between the electric drive direct cooling module and the outlet (211) of the heat exchanger assembly (10); and / or, a first throttle valve (402) is provided between the battery cold plate (40) and the air return port (202) of the compressor (20); And / or, a second throttle valve (502) is provided between the electric drive direct cooling module and the return air port (202) of the compressor (20).

20. The thermal management system according to claim 18, wherein: The inlet comprises a first inlet (111) and a second inlet (113); the flow from the first inlet (111) to the outlet (211) passes through all of the first heat exchange flow path (14) and the second heat exchange flow path (24); the flow from the second inlet (113) to the outlet (211) passes through part of the first heat exchange flow path (14) and / or part of the second heat exchange flow path (24); the first inlet (111) and the second inlet (113) are both connected to the exhaust port (201) of the compressor (20).

21. The thermal management system according to claim 20, wherein: Also includes: a first pipeline (801), one end of the first pipeline (801) being connected to the first inlet (111); A first three-way valve (701), wherein the first pipeline (801), the second inlet (113) and the exhaust port (201) of the compressor (20) are connected via the first three-way valve (701).

22. The thermal management system according to claim 21, wherein: Also includes: A condenser (60) is connected in parallel with the heat exchanger assembly (10).

23. The thermal management system according to claim 22, wherein: Also includes: a second pipeline (802), one end of the condenser (60) being connected to the second pipeline (802); A second three-way valve (702), the second pipeline (802), the first pipeline (801) and the first inlet (111) are connected via the second three-way valve (702).

24. The thermal management system according to claim 23, wherein: One end of the battery cold plate (40) facing away from the heat exchanger assembly (10) is connected to the exhaust port (201) of the compressor (20).

25. The thermal management system according to claim 24, wherein: One end of the battery cold plate (40) facing away from the heat exchanger assembly (10), one end of the condenser (60), and the second pipeline (802) are connected via a third three-way valve (703).

26. A vehicle, characterized in that: Comprising a thermal management system (100) according to any one of claims 17-25.

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