CN110542224B

CN110542224B - Thermal management system

Info

Publication number: CN110542224B
Application number: CN201810520391.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Sanhua Holding Group Co Ltd
Current assignee: Sanhua Holding Group Co Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2022-02-01
Anticipated expiration: 2038-05-28
Also published as: CN110542224A

Abstract

The invention discloses a heat management system, which comprises an intermediate heat exchanger and a fluid control device, wherein the intermediate heat exchanger comprises a first heat exchange part and a second heat exchange part, the second heat exchange part comprises a first port, a second port and a third port, the third port of the second heat exchange part or the second port of the second heat exchange part can be communicated with the first port of the third heat exchanger through the fluid control device, and a refrigerant flowing through the second heat exchange part can exchange heat with at least part of a refrigerant flowing through the first heat exchange part.

Description

Thermal management system

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of thermal management systems.

[ background of the invention ]

Generally, the performance of the thermal management system can be improved by providing the intermediate heat exchanger in the thermal management system, however, the heat exchange amount of the intermediate heat exchanger is not always constant when the thermal management system works, such as heating or cooling, and therefore, the improvement of the prior art is needed to be beneficial to improving the performance of the thermal management system.

[ summary of the invention ]

The invention aims to provide a thermal management system which is beneficial to improving the performance of the thermal management system.

A heat management system comprises a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger and an intermediate heat exchanger, wherein the intermediate heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part can exchange heat with at least part of the second heat exchange part, a first port of the first heat exchange part is communicated with an inlet of the compressor, a second port of the first heat exchange part can be communicated with a refrigerant outlet of the second heat exchanger and/or communicated with a second port of the third heat exchanger, and a first port of the second heat exchange part can be communicated with a refrigerant outlet of the first heat exchanger or communicated with a refrigerant inlet of the second heat exchanger;

the heat management system further comprises a fluid control device, wherein the first port of the third heat exchanger can be communicated with the second port of the second heat exchanging part through the fluid control device, or the first port of the third heat exchanger can also be communicated with the third port of the second heat exchanging part through the fluid control device; when the first port of the third heat exchanger is communicated with the second port of the second heat exchanging part, the first heat exchanging part can exchange heat with part of the second heat exchanging part, and when the first port of the third heat exchanger is communicated with the third port of the second heat exchanging part, the first heat exchanging part can exchange heat with all the second heat exchanging parts; the working modes of the heat management system comprise a heating mode, a cooling mode and a dehumidifying mode, and in at least one working mode of the heat management system, the first port of the third heat exchanger can be selectively communicated with the second port of the second heat exchanging part or the third port of the second heat exchanging part through the fluid control device.

The heat management system is provided with an intermediate heat exchanger and a fluid control device, a second heat exchange part of the intermediate heat exchanger comprises a first port, a second port and a third port, under one working mode of the heat management system, the first port of the third heat exchanger can be communicated with the second port of the second heat exchange part or the third port of the second heat exchange part through the fluid control device, or the fluid control device can select the refrigerant flowing through the second heat exchange part to exchange heat with all or part of the refrigerant flowing through the first heat exchange part, and the heat management system can select the heat exchange amount of the intermediate heat exchanger according to the working condition, so that the requirement of the heat management system on the heat exchange amount of the intermediate heat exchanger can be met, and the performance of the heat management system can be improved relatively.

[ description of the drawings ]

FIG. 1 is a schematic structural diagram of an intermediate heat exchanger according to one embodiment of the present invention;

FIG. 2 is a side view schematic of the intermediate heat exchanger of FIG. 1;

FIG. 3 is a schematic bottom view of the intermediate heat exchanger of FIG. 1;

FIG. 4 is a schematic structural diagram of a heat exchange assembly according to one embodiment of the present invention;

FIG. 5 is a schematic view of a first flat tube according to one embodiment of the present invention;

FIG. 6 is a schematic structural view of a second flat tube according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of an intermediate heat exchanger according to another embodiment of the present invention;

FIG. 8 is a schematic of a thermal management system according to one aspect of the present invention;

FIG. 9 is a schematic view of the heat management system of FIG. 8 in a heating mode;

FIG. 10 is a schematic view of the heat management system of FIG. 8 in a cooling mode;

FIG. 11 is a schematic view of the heat management system of FIG. 8 in a second dehumidification mode;

FIG. 12 is a schematic view of the heat management system of FIG. 8 in a first dehumidification mode;

FIG. 13 is a schematic view of a thermal management system according to another aspect of the present invention;

FIG. 14 is a schematic view of a thermal management system according to yet another aspect of the present invention;

FIG. 15 is a schematic view of the heat management system of FIG. 14 in a heating mode;

FIG. 16 is a schematic view of the heat management system of FIG. 14 in a cooling mode;

FIG. 17 is a schematic illustration of the heat management system of FIG. 14 in a second dehumidification mode;

FIG. 18 is a schematic illustration of the heat management system of FIG. 14 in a first dehumidification mode;

FIG. 19 is a schematic view of a first fluid switching device of the thermal management system shown in FIG. 8;

FIG. 20 is a schematic view of the connection of a second fluid switching device to a first valve element of the thermal management system;

FIG. 21 is a schematic view of a connection of the intermediate heat exchanger, fluid control device;

fig. 22 is another schematic connection diagram of the intermediate heat exchanger and the fluid control device.

[ detailed description ] embodiments

The thermal management system according to the technical scheme of the invention can have various embodiments, at least one of which can be applied to a thermal management system for a vehicle, and at least one of which can be applied to other thermal management systems such as a thermal management system or a commercial thermal management system, and a specific thermal management system for a vehicle is taken as an example and is described with reference to the accompanying drawings. Referring to fig. 8 to 18, the thermal management system includes a compressor 10, a first heat exchanger 101, a second heat exchanger 102, a third heat exchanger 103, a first throttling device 202 and an intermediate heat exchanger 203, wherein an outlet of the compressor 10 is communicated with a refrigerant inlet of the first heat exchanger 101, and the first throttling device 202 is disposed at a refrigerant inlet of the second heat exchanger 102 to throttle refrigerant entering the second heat exchanger 102. The intermediate heat exchanger 203 includes a first heat exchanging portion and a second heat exchanging portion each including a refrigerant passage through which a refrigerant flowing therethrough can exchange heat, and specifically, referring to fig. 1, the second heat exchanging portion includes a first port 25, a second port 21, and a third port 22, and the refrigerant flows through only a part of the refrigerant passage of the second heat exchanging portion while flowing through the refrigerant passage between the first port 25 of the second heat exchanging portion and the second port 21 of the second heat exchanging portion, and thus the refrigerant flowing through the second heat exchanging portion can exchange heat with a part of the refrigerant in the first heat exchanging portion, while flowing through the refrigerant passage between the first port 25 of the second heat exchanging portion and the third port 22 of the second heat exchanging portion, while flowing through the entire refrigerant passage of the second heat exchanging portion, the refrigerant flowing through the second heat exchanging portion exchanges heat with the refrigerant flowing through the first heat exchanging portion. The third port of the second heat exchanging portion may be in communication with the first port of the third heat exchanger 103, the second port of the second heat exchanging portion may also be in communication with the first port of the third heat exchanger 103, and the first port of the second heat exchanging portion may be in communication with the refrigerant outlet of the first heat exchanger 101. The first port 23 of the first heat exchanging part is in communication with an inlet of the compressor 10, and the second port 24 of the first heat exchanging part can be in communication with a refrigerant outlet of the second heat exchanger 102 and/or can be in communication with a second port of the third heat exchanger 103.

Specifically, the intermediate heat exchanger 203 may be a plate heat exchanger, a microchannel heat exchanger, or a tube heat exchanger, and the intermediate heat exchanger 203 is described below by taking the microchannel heat exchanger as an example. Referring to fig. 1-7, the intermediate heat exchanger 203 includes a first header 11, a second header 12, a third header 13, a fourth header 14, and a heat exchange assembly 3, wherein the first header 11 and the third header 13 are located at the same end of the heat exchange assembly 3, the second header 12 and the fourth header 14 are located at the opposite end of the heat exchange assembly 3, and the heat exchange assembly 3 includes a first flat tube 31 and a second flat tube 32; the intermediate heat exchanger 203 includes a first heat exchanging portion and a second heat exchanging portion, wherein the second heat exchanging portion includes a first collecting pipe 11, a second collecting pipe 12, and a first flat pipe 31, and the first heat exchanging portion includes a third collecting pipe 13, a fourth collecting pipe 14, and a second flat pipe 32. The first collecting pipe 11 includes a cavity of the first collecting pipe and a second port 21, specifically, the first collecting pipe 11 includes a longitudinal long tubular main body portion, two ends of the main body portion of the first collecting pipe 11 are sealed by end covers, and the main body portion of the first collecting pipe 11 and the end covers surround to form the cavity of the first collecting pipe 11. The second port 21 is disposed on a main body portion or an end cap of the first collecting pipe 11 or a communication pipe communicated with the first collecting pipe 11, and the main body portion of the first collecting pipe 11 is further provided with a plurality of slots which are parallel to each other and penetrate through a pipe wall of the main body portion of the first collecting pipe 11. The second collecting pipe 12 includes a first port 25, a third port 22 and a chamber of the second collecting pipe, the second collecting pipe 12 includes a longitudinal long tubular main body portion, two ends of the main body portion of the second collecting pipe 12 are sealed by end covers, the main body portion and the end covers of the second collecting pipe 12 surround to form a chamber (not shown) of the second collecting pipe, the first port 25 is disposed at one end of the main body portion of the second collecting pipe 12 or at an end cover of a corresponding end of the main body portion of the second collecting pipe 12 or a communication pipe communicated with the second collecting pipe, and the third port 22 is disposed at the other end of the main body portion of the second collecting pipe 12 or at an end cover of a corresponding end of the main body portion of the second collecting pipe 12 or a communication pipe communicated with the second collecting pipe. The main body of the second header 12 is further provided with a plurality of slots (not shown) parallel to each other and penetrating the wall of the main body of the second header 12. Referring to fig. 1, the second heat exchanging portion includes a partition plate 121, the partition plate 121 is fixed to the second collecting pipe 12, in this embodiment, the partition plate 121 is welded to the second collecting pipe 12, and the partition plate 121 divides the cavity of the second collecting pipe into a first sub-cavity 1201 and a second sub-cavity 1202 which are relatively not communicated, wherein the first sub-cavity 1201 is communicated with the first port 25 of the second heat exchanging portion, the second sub-cavity 1202 is communicated with the third port 22 of the second heat exchanging portion, distances from the partition plate to end caps at two ends may be equal or different along an axial direction of the second collecting pipe, and a position of the partition plate depends on a heat exchanging amount of the intermediate heat exchanger required by the system. It can be known that the first port of the second heat exchanging part and the third port of the second heat exchanging part are located at both sides of the barrier 121. In other embodiments, the second collecting pipe may also include a first sub-pipe and a second sub-pipe, the first sub-pipe includes the first sub-chamber, the second sub-pipe includes the second sub-chamber, and the first sub-pipe and the second sub-pipe may or may not be fixedly disposed.

Referring to fig. 1 and 2, the second heat exchanging portion includes a first flat pipe 31, the first heat exchanging portion includes a second flat pipe 32, the first flat pipe includes a first communicating channel, the first flat pipe includes a first end and a second end, the first end of the first flat pipe 31 is welded and fixed with the slot of the first header 11, the port of the first end is communicated with the cavity of the first header 11, the first communicating channel is communicated with the cavity of the first header 11, the second end is welded and fixed with the slot of the second header 12, specifically, the plurality of first flat pipes includes a first sub-portion 3101 and a second sub-portion 3102, or, the first sub-portion includes a part of the first flat pipe of the second heat exchanging portion, the second sub-portion includes another part of the first flat pipe of the second heat exchanging portion, the port disposed at the second end of the first sub-portion is communicated with the first sub-portion, the port disposed at the second end of the second sub-portion is communicated with the second sub-portion, thus, the chambers of the first header 11 can communicate with the first sub-chamber through the channels of the first sub-portion 3101, and the chambers of the first header can also communicate with the second sub-chamber through the channels of the second sub-portion 3102. It can be understood that the first sub-chamber and the second sub-chamber are relatively not in communication, meaning that the first sub-chamber can communicate with the second sub-chamber through the channels of the first sub-portion, the chambers of the second header, and the channels of the second sub-portion. The second flat pipe 32 includes a second communicating channel, the second flat pipe 32 includes a third end and a fourth end, the third end is welded and fixed with the slot of the third collecting pipe 13, the port of the third end is communicated with the cavity of the third collecting pipe, the second communicating channel is communicated with the cavity of the third collecting pipe, the fourth end is welded and fixed with the slot of the fourth collecting pipe 14, the port of the fourth end is communicated with the cavity of the fourth collecting pipe 14, the second communicating channel is communicated with the cavity of the third collecting pipe 13, and the cavity of the third collecting pipe 13 can be communicated with the cavity of the fourth collecting pipe 14 through the second communicating channel. It can be understood that the first communicating passage is not communicated with the second communicating passage, and the main body portion of the corresponding collecting pipe may be a circular pipe, a square pipe or other regular pipe or irregular pipe.

Referring to fig. 2 to 7, a portion of the first flat tube 31 and a portion of the second flat tube 32 are in direct contact or indirect contact, and the refrigerant flowing through the first flat tube 31 and the refrigerant flowing through the second flat tube 32 can exchange heat at a joint, or the refrigerant flowing through the first heat exchanging portion and the refrigerant flowing through the second heat exchanging portion can exchange heat at a joint. The first flat tube 31 includes a first attaching portion 313, a first bending portion 312 and a first connecting portion 311, the first attaching portion 313 and the first connecting portion 311 are located at two sides of the first bending portion 312, and the refrigerant flowing through the first attaching portion 313 enters the first connecting portion 311 through the first bending portion 312 and then enters the cavity of the second collecting pipe 12. The first flat pipe is a longitudinally long flat pipe, and at least one partition wall is formed along the longitudinal direction of the first flat pipe, the partition wall divides the flat pipe into a plurality of parallel first communication channels, and the first communication channels can be circular channels or channels with other shapes which are arranged at intervals. The first connection portion 311 includes a second end of the first flat tube 31 or a second end of the first flat tube 31 is disposed at the first connection portion 311. Defining a second end of the first flat tube 31: a portion extending from the port of the first end portion along the first communicating path by less than or equal to 3mm, or, in the first communicating path direction, a length of the first end portion by less than or equal to 3mm, defines in the same manner the first end portion of the first flat tube 31, the third end portion of the second flat tube, and the fourth end portion of the second flat tube. The first attaching portion 313, the first connecting portion 311, and the first bending portion 312 may be integrally formed, or may be a separate structure, and they are welded together, wherein the first flat tube 31 may be a hollow flat bent tube, or a flat bent tube including a plurality of channels. It can be known that the bending radius of the first bending part 312 is smaller than half of the distance between the adjacent heat exchange assemblies, so as to ensure that the adjacent heat exchange assemblies are arranged in parallel.

The first attaching portion 313 includes a first surface 3131 and a first attaching surface 3133, the first surface 3131 and the first attaching surface 3133 are disposed on two opposite sides of the first attaching portion, and the first attaching surface is in direct contact or indirect contact with a portion of the second flat tube, where the direct contact or indirect contact means that the first attaching surface is in direct contact or indirect contact with an adjacent surface of the second flat tube 32, where the indirect contact means that the first attaching surface is in contact with the second flat tube through an intermediate, and the intermediate is generally a heat conductor, so as to ensure that the refrigerant of the first flat tube can exchange heat with the refrigerant of the second flat tube, if the intermediate is an aluminum foil, the first attaching surface is in contact with and fixed to the aluminum foil, and then the aluminum foil is fixed in contact with the second flat tube, and the fixing manner may be welding, bonding, or the like. The intermediate can also be heat-conducting silicone grease, and the adjacent surfaces of the first binding surface and the second flat tube are bound through the heat-conducting silicone grease. Typically, the intermediate does not include air. For convenience of the subsequent description, the median line 3132 of the first side is defined as follows: the median line 3132 of the first face is equidistant from both edges of the first face in the width direction of the first face; the median lines of the second and first folded surfaces are defined in the same way, and likewise the second flat tube is also defined and will not be described in detail. The first bending portion 312 includes a first bending surface 3121, the first connection portion 311 includes a second surface 3111, the first bending surface 3121 starts from a side of the first surface 3131 to the second surface 3111, the first surface 3131 and the second surface 3111 are substantially planar, the first bending surface 3121 is substantially arc-shaped, the first bending surface is bent with respect to the first surface and/or the first bending surface is bent with respect to the second surface, or the first bending portion is bent with respect to the first attachment portion and/or the first bending portion is bent with respect to the first attachment portion, the first bending portion is bent from the first attachment portion to the first connection portion, a portion of the second surface 3111 is disposed opposite to a portion of the first surface 3131, the median line 3122 of the first bending surface is inclined with respect to the median line 3132 of the first surface and/or the median line 3122 of the first bending surface is inclined with respect to the median line 3112 of the second surface. In the technical solution of the present invention, the inclination here means that the included angle between the two median lines is greater than 0 ° and less than 90 °. In order to ensure that the first connecting part and the slot of the second collecting pipe are welded and fixed, along the normal direction of the first surface, the projection of the second end part of the first flat pipe on the first surface is not intersected with the projection of the first attaching part on the first surface; it can be seen that the axis of the second header 12 is perpendicular to the first surface, and in the normal direction of the first surface, the projection of the second header on the first surface does not intersect with the projection of the first attaching portion on the first surface. Therefore, the end of the first connecting portion protrudes out of the heat exchange assembly, the end of the first connecting portion extends into the slot of the second collecting pipe 12 and is welded and fixed with the slot, and the first communicating channel is communicated with the cavity of the second collecting pipe 12.

The first flat tube 31 includes a second bending portion 314 and a second connecting portion 315, the first attaching portion 313 and the second connecting portion 315 are located on two sides of the second bending portion 314, the communicating channel of the first attaching portion 313 is communicated with the communicating channel of the second connecting portion 311 through the communicating channel of the second bending portion 315, or the fluid flowing through the first attaching portion 313 enters the second connecting portion 315 through the second bending portion 314, and then enters the cavity of the first collecting pipe 11. The second bending portion 314 has substantially the same structure as the first bending portion 312, and the second connecting portion 315 has substantially the same structure as the first connecting portion 311, and will not be described in detail. The second bending portion includes a second bending surface 3141, the second connecting portion includes a third surface 3151, the second bending surface 3141 is bent relative to the first surface 3131 and/or the third surface 3151, or the second bending portion is bent relative to the first attaching portion and/or the second bending portion is bent relative to the second connecting portion, or a median line of the second bending surface is obliquely arranged relative to a median line 3131 of the first surface and/or a median line 3152 of the third surface, the second bending surface starts from the other side of the first surface to the third surface, the second bending portion starts from the other side of the first connecting portion to the second connecting portion, a part of the third surface is arranged relative to a part of the first surface, and a part of the second connecting portion is arranged relative to a part of the first attaching portion. The first flat tube 31 may include a first bent portion (not shown), the first end portion of the first flat tube 31 may be provided at the first bent portion, the first bent portion may extend from the first bonded portion 313 and may be bent with respect to the first bonded portion, the first bent portion may include a first bent surface, the first bent surface may extend from the first surface and may be bent with respect to a median line of the first surface, or the median line of the first bent surface may be a curve, and the first bent surface may be substantially flush with the first surface 3131. Similarly, in order to ensure that the end of the second connection portion or the end of the first bending portion is welded and fixed to the slot of the first header 11, in the normal direction of the first surface, the projection of the first end of the first flat tube 31 on the first surface does not intersect the projection of the first attaching portion 313 on the first surface; it can be seen that the axis of the first header 11 is perpendicular to the first surface, and in the normal direction of the first surface, the projection of the first header 11 on the first surface does not intersect the projection of the first bonding portion 313 on the first surface. Thus, the first end of the first flat tube 31 protrudes out of the heat exchange assembly, and the first end of the first flat tube 31 extends into the slot of the first header and is welded and fixed with the slot of the first header. It is noted that the first end portion of the first flat tube is provided at the second connecting portion or at the first bent portion.

The second flat tube 32 includes a port of the third end, a port of the fourth end, and at least one communication passage, and the port of the third end and the port of the fourth end are communicated through the communication passage of the second flat tube. The second flat-shaped pipe comprises a second attaching portion 323 which is approximately of a longitudinally long flat structure, the second attaching portion comprises a second attaching surface and a fourth surface 3231, the second attaching surface is in direct contact or indirect contact with the first attaching surface, and the fourth surface and the second attaching surface are arranged on two opposite sides of the second flat-shaped pipe. The second flat tube comprises a third connecting portion 322, a port of a third end portion of the second flat tube is arranged on the third connecting portion, the third connecting portion is located on one side of the second attaching portion along the direction of the median line of the fourth surface, and the longitudinal axis of the third connecting portion and the longitudinal axis of the second attaching portion are approximately on the same straight line. Or, the second flat tube may also include a third bent portion and a third connection portion, a port of a third end portion of the second flat tube 32 is disposed on the third connection portion, the second attaching portion and the third connection portion are located on two sides of the third bent portion, the third bent portion includes a third bent surface, the third connection portion includes a fifth surface, the third bent surface starts from one side of the fourth surface to the fifth surface, or the third bent portion starts from one side of the second connection portion to the third connection portion, a part of the fourth surface is disposed opposite to a part of the fifth surface, the third bent surface is bent opposite to the fourth surface and/or the third bent surface is bent opposite to the fifth surface; or the third bending part is bent relative to the second attaching part and/or the third bending part is bent relative to the third connecting part; or, a part of the second bonding portion is arranged opposite to a part of the third connecting portion, and the median line of the third bending surface or the median line of the third bending surface is inclined relative to the median line of the fourth surface; in other embodiments, the second flat tube 32 includes a second curved portion 324, a third end of the second flat tube is ported to the second curved portion 324, the second curved portion 324 includes a second curved surface 3241, the second curved surface 3241 and a fourth surface 3231 are located on the same side of the second flat tube 32, the second curved surface 3241 extends from one side of the fourth surface, or the second curved portion starts from one side of the second attachment portion, a median line of the second curved surface is curved relative to a median line of the fourth surface, and the second curved surface and the fourth surface are substantially on the same plane. Similarly, in order to ensure that the third end of the second flat tube is welded and fixed with the slot of the third header pipe, in the normal direction of the second surface, the projection of the third end of the second flat tube 32 on the first surface does not intersect with the projection of the first attaching portion on the first surface; it can be known that the axis of the third header is perpendicular to the first surface, and in the normal direction of the first surface, the projection of the third header on the first surface does not intersect with the projection of the second attaching portion on the first surface. Therefore, the third end of the second flat tube protrudes out of the heat exchange assembly, and the third end of the second flat tube 32 goes deep into the slot of the third collecting pipe 13 and is welded and fixed with the slot.

The second flat tube 32 further includes a fourth connecting portion 321, a fourth end portion of the second flat tube is disposed on the fourth connecting portion, and the fourth connecting portion is located on the other side of the second attaching portion, wherein a longitudinal axis of the fourth connecting portion and a longitudinal axis of the second attaching portion are substantially on the same straight line. The second flat tube 32 may also include a fourth bending portion and a fourth connecting portion, a port of the fourth end portion is disposed on the fourth connecting portion, the second attaching portion and the fourth connecting portion are located on two sides of the fourth bending portion, the fourth bending portion includes a fourth bending surface, the fourth connecting portion includes a sixth surface, the fourth bending surface extends from the other side of the fourth surface to the sixth surface, a portion of the fourth surface is disposed opposite to a portion of the sixth surface, the fourth bending surface is bent relative to the fourth surface and/or the fourth bending surface is bent relative to the sixth surface; or, the median line of the fourth bending surface is obliquely arranged relative to the median line of the fourth surface; or the fourth bending part extends from the other side of the second attaching part to the fourth connecting part, part of the second attaching part and part of the fourth connecting part are arranged oppositely, and the fourth bending part is bent relative to the second attaching part and/or the fourth bending part is bent relative to the fourth connecting part. In other embodiments, the second flat tube 32 includes a third curved portion 325, the fourth end portion of the second flat tube 32 is disposed at the third curved portion 325, the third curved portion includes a third curved surface 3251, the third curved surface extends from one side of the fourth surface, or the third curved portion starts from the other side of the second attaching portion, a median line of the third curved surface is curved with respect to a median line of the fourth surface, and the third curved surface and the fourth surface are substantially in the same plane. Similarly, in order to ensure that the fourth end of the second flat tube is welded and fixed with the slot of the second collecting pipe, the projection of the fourth end of the second flat tube on the first surface in the normal direction of the first surface is not intersected with the projection of the first attaching part on the first surface; it can be known that the axis of the second header is perpendicular to the first surface, and in the normal direction of the first surface, the projection of the second header 12 on the first surface does not intersect with the projection of the first attaching portion on the first surface. Thus, the fourth end of the second flat tube 32 protrudes out of the heat exchange assembly, and the fourth end of the second flat tube 32 is inserted into the slot of the fourth collecting pipe 14 and is welded and fixed therewith. First laminating portion and the flat pipe direct contact of part second or indirect contact, first flat pipe 31 sets up first portion of bending, and first portion of bending is bent for first laminating portion, first connecting portion relative protrusion in heat exchange assembly and with the chamber intercommunication of first pressure manifold, the projection of first pressure manifold and the projection non-intersect of first laminating portion, this heat transfer device's first flat pipe 31 includes the portion of bending, the structure is simple relatively.

Referring to fig. 8 to 21 and fig. 1, the thermal management system includes a fluid control device 2000, the fluid control device 2000 includes at least one throttling unit and at least one valve unit, and when the thermal management system is in operation, the second port of the second heat exchanging part or the third port of the second heat exchanging part can be communicated with the first port of the third heat exchanger through the throttling unit, or the first port of the third heat exchanger can be communicated with the second port of the second heat exchanging part or the third port of the second heat exchanging part through the valve unit. Specifically, the fluid control device 2000 includes a flow regulating portion 2100 and a fluid switching portion 208, and the flow regulating portion 2100 and the fluid switching portion 208 may be integrally provided, e.g., the fluid control device may be an integrated component; the flow rate adjusting part and the fluid switching part may be provided separately, and the flow rate adjusting part and the fluid switching part may be communicated with each other through a pipe. The flow regulating part is arranged in series with the fluid switching part, wherein the series arrangement refers to that: in operation of the thermal management system, the refrigerant passes through the flow rate adjustment portion 2100 and then the fluid switching portion 208, or the refrigerant passes through the fluid switching portion 208 and then the flow rate adjustment portion 2100. The first port of the third heat exchanger 103 can be communicated with the first port 2081 of the fluid switching portion through the flow rate adjusting portion 2100, the second port 2082 of the fluid switching portion is communicated with the second port 21 of the second heat exchanging portion, and the third port 2083 of the fluid switching portion is communicated with the third port 22 of the second heat exchanging portion, as shown in fig. 21. The fluid switching portion 208 can be mechanically or electrically controlled, for example, the air conditioner controller outputs a signal to the fluid switching portion, and the fluid switching portion can act accordingly, and the operation mode of the fluid switching portion includes: the first port of the fluid switching portion is communicated with the second port 2082 of the fluid switching portion, and the first port 2081 of the fluid switching portion is not communicated with the third port 2083 of the fluid switching portion; alternatively, the first port 2081 of the fluid switching section is in communication with the third port 2083 of the fluid switching section, and the first port of the fluid switching section is not in communication with the second port 2082 of the fluid switching section. Therefore, in the same operation mode of the thermal management system, the first port of the third heat exchanger can be selectively communicated with the second port of the second heat exchanging part or the third port of the second heat exchanging part through the fluid control device 2000, for example, in the heating mode of the thermal management system, the first port of the third heat exchanger can be communicated with the second port of the second heat exchanging part, and the first port of the third heat exchanger can be not communicated with the third port of the second heat exchanging part. The fluid switching portion may be a three-way valve or a three-way flow regulating valve or a combination of two shut-off valves, which will not be described in detail. The flow rate adjusting portion includes a first port and a second port, the first port communicates with the first port of the third heat exchanger 103, and the second port communicates with the first port 2081 of the fluid switching portion. Specifically, the flow rate adjusting portion includes a valve unit 206 and a throttle unit 205, and the first port can communicate with the second port through the valve unit 206, and the second port can communicate with the first port through the throttle unit 205. Alternatively, the throttling unit 205 is disposed between the first port 2081 of the fluid switching portion and the first port of the third heat exchanger 103 to throttle the refrigerant entering the third heat exchanger 103; the valve unit 206 is provided separately from the throttling unit 205, and the valve unit 206 may include two ports, specifically, a first port of the valve unit 206 communicates with the second interface, a first port of the throttling unit 205 communicates with the second interface, and both the second port of the throttling unit 205 and a second port of the valve unit 206 communicate with the first interface, where the valve unit may be a two-way stop valve or a two-way flow regulating valve. In other embodiments, the valve unit 206 comprises three ports, a first port of the valve unit being in communication with the first interface, a second port of the valve unit 206 being in communication with the second interface, a third port of the valve unit being in communication with a second port of the throttling unit 205, the first port of the throttling unit 205 being in communication with the second interface; the valve unit can be a three-way valve or a three-way flow regulating valve, and can also be a combination of two stop valves. The valve unit 206 and the throttling unit 205 may also be integrated, for example, the valve unit 206 and the throttling unit 205 are manufactured in an integrated assembly. For another example, referring to fig. 22, the flow rate adjusting portion includes a valve body 2100, and a first port 2111 and a second port 2112 are provided in the valve body 2100, wherein the flow rate adjusting portion has a throttling function and a cutoff function when refrigerant enters the valve body from the second port and is discharged from the first port; the flow rate adjusting portion has a conduction function when the refrigerant enters the valve body from the first port and is discharged from the second port. Specifically, the flow regulating portion includes a driving portion 2120, a valve plug 2130 and a valve seat 2140, the valve body further includes a first valve port 2113, the valve seat 2140 includes a second valve port 2141, when the refrigerant enters the valve body from the second port 2112 and is discharged from the first port 2111, the valve seat is located at a first working position, the valve seat 2140 closes the first valve port 2113, the driving portion 2120 drives the valve plug to move relative to the second valve port 2141, the valve plug can open or close the second valve port or adjust the opening degree of the second valve port, and when the valve plug 2130 closes the second valve port 2141, the valve plug can block the communication channel between the first port and the second port; when the valve core 2130 adjusts the opening of the second valve port, after the refrigerant enters the second inlet, the refrigerant is throttled in the valve body and then is discharged out of the valve body 2110 through the first port; when the refrigerant enters the valve body from the first port and is discharged from the second port, the valve seat is located at the second working position, the valve seat 2140 opens the first valve port 2113, and the first port is communicated with the second port through the first valve port. In other embodiments, the valve unit may also be a one-way valve, wherein an inlet of the one-way valve is in communication with the first port and an outlet of the one-way valve is in communication with the second port. In another embodiment, referring to fig. 13, the fluid control device 2000 includes two flow rate adjusting portions arranged in parallel, each flow rate adjusting portion includes a first interface and a second interface, the first interfaces of the two flow rate adjusting portions are communicated with the first port of the third heat exchanger 103, the second interface of one of the flow rate adjusting portions is communicated with the second port 21 of the second heat exchanging portion, and the second interface of the other flow rate adjusting portion is communicated with the third port 22 of the second heat exchanging portion. When the thermal management system works, if the flow regulating part is used for throttling, the refrigerant is throttled by at least one throttling unit, and all the valve units are cut off; when the flow regulating part is conducted, at least one valve unit is conducted, and the throttling units are all cut off. In addition, the connection or communication described in this specification may be direct connection or communication, for example, two components may be assembled together, so that a connection pipeline may not be required, and the system is more compact, or may be indirect connection or communication, for example, communication through a pipeline, or communication after passing through a certain component, which is not illustrated herein; according to the technical scheme, the opening degree of the opening throttling unit finger throttling unit is the largest, the opening degree of the closing throttling unit finger throttling unit is zero, and the opening throttling unit finger is opened and closed or the throttling state of the throttling unit is opened.

The heat management system further comprises a first valve device, wherein a refrigerant inlet of the first heat exchanger 101 is communicated with an outlet of the compressor 10, a refrigerant outlet of the first heat exchanger 101 is communicated with the first valve device, a refrigerant outlet of the first heat exchanger 101 can be communicated with a second port of the third heat exchanger 103 through the first valve device, the first heat exchanger 101 can also be communicated with the first throttling device 202 and/or a first port of the second heat exchanging part through the first valve device, and a refrigerant outlet of the second heat exchanger 102 can also be communicated with a second port of the first heat exchanging part or communicated with the second port of the first heat exchanging part through the gas-liquid separator 207. Specifically, the first valve device includes a first communication port that communicates with the refrigerant outlet of the first heat exchanger 101, a second communication port that can communicate with the second port of the first heat exchanging portion or with the second port of the first heat exchanging portion through the gas-liquid separator 207, a third communication port that communicates with the second port of the third heat exchanger 103, and a fourth communication port that can communicate with the refrigerant inlet of the second heat exchanger 102 and/or with the first port of the second heat exchanging portion through the first throttling device 202, and includes at least a first operating state in which the first communication port of the first valve device is in communication with the third communication port and a second operating state in which the communication passage between the fourth communication port and the second communication port is relatively non-conductive, the first valve device communicates the communication passage between the first communication port and the second communication port, and communicates the communication passage between the third communication port and the fourth communication port. Specifically, the first valve device of the thermal management system may be the first fluid switching device 201, the first fluid switching device 201 including a first valve bore 2011, a second valve bore 2012, a third valve bore 2013, and a first inlet 2014, or the first fluid switching device 201 further includes a first connection pipe connected to the first valve hole, a second connection pipe connected to the second valve hole, a third connection pipe connected to the third valve hole, and a fourth connection pipe connected to the first inlet 2014, referring to fig. 19, wherein the first inlet 2014 is communicated with the first communication port, the first valve hole 2011 is communicated with the third communication port, the second valve hole 2012 is communicated with the fourth communication port, the third valve hole 2013 is communicated with the second communication port, in a first operating state of the first valve device, the first fluid switching device 201 can conduct the communication channel between the first inlet 2014 and the first valve bore 2011 and close the communication channel between the third valve bore 2013 and the second valve bore 2012; in the second operating state of the first valve device, the first fluid switching device 201 is capable of communicating the first valve bore 2011 with the communication passage of the second valve bore 2012, while communicating the third valve bore 2013 with the communication passage of the first inlet 2014.

The first valve device may also include a second fluid switching device 201 'and a first valve element 209, and in particular refer to fig. 20, wherein the second fluid switching device 201' includes a second inlet 2014 ', a fourth valve hole 2011', a fifth valve hole 2012 'and a sixth valve hole 2013', and similarly, the second fluid switching device 201 'may also include a fifth communication pipe communicated with the fourth valve hole, a sixth communication pipe communicated with the fifth valve hole, a seventh communication pipe communicated with the sixth valve hole and an eighth communication pipe communicated with the second inlet 2014, two ports of the first valve element 209 may be respectively communicated with the sixth valve hole 2013' and the second communication port, the second inlet 2014 'is communicated with the first communication port, the fourth valve hole 2011' is communicated with the third communication hole, the fifth valve hole 2012 'is communicated with the fourth communication port, and in the first operating state of the first valve device, the second fluid switching device 201' makes the communication passage between the second inlet 2011 'and the fourth communication port 2011', the communication passage between the sixth valve hole 2013 'and the fifth valve hole 2012' can be communicated, and the first valve element 209 is closed; in the second operation state of the first valve device, the second fluid switching device 201 ' can communicate the communication passage between the fourth valve hole 2011 ' and the fifth valve hole 2012 ', can communicate the communication passage between the sixth valve hole 2013 ' and the second inlet 2014 ', and can communicate the first valve element 209. The first valve 209 may be a stop valve, a flow rate adjustment valve, or a check valve, wherein when the first valve 209 is a check valve, the check valve stops when the refrigerant flows into the sixth valve hole 2013 ', and the check valve is turned on when the refrigerant flows out of the sixth valve hole 2013'.

Referring to fig. 14-18, the thermal management system may also include a first valve module 4011, a second valve module 4012, and a third valve module 4013, the first valve module 4011, the second valve module 4012 and the third valve module 4013 may be a stop valve or a two-way flow regulating valve, a first port of the first valve module 4011 and a first port of the second valve module 4012 are both communicated with an outlet of the compressor 10, a second port of the first valve module 4011 is communicated with a refrigerant inlet of the first heat exchanger 101, a second port of the second valve module 4012 is communicated with a second port of the third heat exchanger 103, a second port of the third valve module 4013 is communicated with a second port of the first heat exchanging part or communicated with a second port of the first heat exchanging part through a gas-liquid separator 207, a first port of the third valve module 4013 is communicated with a second port of the third heat exchanger 103, and a refrigerant outlet of the second heat exchanger 102 is communicated with a second port of the first heat exchanging part or communicated with a second port of the first heat exchanging part through the gas-liquid separator 207. In another solution of this embodiment, the first valve module 4011 and the second valve module 4012 may be replaced by a first three-way valve (not shown), specifically, a first connection port of the first three-way valve is communicated with the outlet of the compressor 10, a second connection port of the first three-way valve is communicated with the refrigerant inlet of the first heat exchanger 101, and a third connection port of the first three-way valve is communicated with the second port of the third heat exchanger 103. Alternatively, the second valve module and the third valve module may be replaced by a second three-way valve, specifically, a second connection port of the second three-way valve and a first port of the first valve module are communicated with the outlet of the compressor 10, a first connection port of the second three-way valve is communicated with a second port of the third heat exchanger 103, and a third connection port of the second three-way valve is communicated with a second port of the second heat exchanging part or a second port of the second heat exchanging part through a gas-liquid separator. The throttling unit 205 and the first throttling device 202 may be devices capable of throttling the refrigerant, such as a thermal expansion valve, an electronic expansion valve, or a capillary tube; the valve unit 206 may be a stop valve or a flow rate control valve having an on-off control function, and may be a check valve that can control the flow of the refrigerant and shut off the flow path, and that can flow in one direction and shut off the flow in the other direction; the valve unit or valve module may also be integrated with the heat exchanger to form an assembly that is more compact, such as the assembly formed by integrating the first throttle device 202 and the second heat exchanger 102.

The heat management system further comprises an air conditioning box (not numbered), the air conditioning box comprises an air conditioning box body, the air conditioning box body is provided with a plurality of air channels (not shown) which are communicated with the interior of the vehicle, and the air channels are provided with grilles (not shown) capable of adjusting the sizes of the air channels. An inner circulation air port, an outer circulation air port, a circulation air door 301 for adjusting the sizes of the inner circulation air port and the outer circulation air port and a motor for driving the circulation air door 301 are arranged on one side of the air inlet of the air conditioner box body. The internal circulation air port is communicated with the interior of the vehicle, and air in the vehicle enters the air conditioner box body through the internal circulation air port and then enters the interior of the vehicle again through the air duct to form internal circulation; the external circulation air port is communicated with the outside of the vehicle, and air outside the vehicle enters the air conditioner box body through the external circulation air port and enters the inside of the vehicle through the air duct. The circulating air door 301 is arranged between the inner circulating air port and the outer circulating air port, the controller can control the circulating air door 301 through the motor, the inner circulating air port can be closed when the circulating air door 301 is switched to the inner circulating air port to form outer circulation, the outer circulating air port can be closed when the circulating air door 301 is switched to the outer circulating air port to form vehicle inner circulation, the sizes of the inner circulating air port and the outer circulating air port can be adjusted by adjusting the position of the circulating air door 301, and therefore the proportion of vehicle outer air and vehicle inner air in air entering the air conditioner box body is adjusted. In addition, a fan 303 is further disposed on one side of the third heat exchanger 103, so that the speed of the wind flowing through the third heat exchanger 103 can be increased. The first heat exchanger 101 is disposed in the air conditioning cabinet, and a blower 304 is disposed in the air conditioning cabinet at a position close to the inner circulation air opening and the outer circulation air opening. The temperature air door 302 is further arranged on the windward side of the first heat exchanger 101, the first heat exchanger 101 and the second heat exchanger 102 can be arranged in the air conditioner box body at a certain distance, or the temperature air door 302 is arranged between the first heat exchanger 101 and the second heat exchanger 102, when the temperature air door 302 is opened, air blown in from the inner circulation air opening or the outer circulation air opening can pass through the first heat exchanger 101 behind the temperature air door 302, when the temperature air door 302 is closed, air blown in from the inner circulation air opening or the outer circulation air opening cannot pass through the first heat exchanger 101, and the air flows through channels on two sides of the temperature air door 302 and then enters the interior of a vehicle through an air channel.

The heat management system comprises a heating mode, a cooling mode, a first dehumidification mode and a second dehumidification mode, and the working conditions of the heat management system in the modes are described below. When the ambient temperature is low and the passenger compartment requires heat to enhance passenger comfort, the thermal management system enters a heating mode, please refer to fig. 9 and 15. Specifically, taking fig. 9 as an example for description, in the heating mode, the first fluid switching device 201 is in the second operating state, the throttling unit 205 is opened, the refrigerant of the thermal management system is compressed by the compressor 10, the refrigerant at low temperature and low pressure is compressed into the refrigerant at high temperature and high pressure, the refrigerant enters the first heat exchanger 101 from the outlet end of the compressor 10 through the refrigerant inlet of the first heat exchanger 101, the temperature damper 302 is opened, the refrigerant of the first heat exchanger 101 exchanges heat with the air around the first heat exchanger 101 in the air duct, the refrigerant of the first heat exchanger 101 releases heat to the ambient air, and becomes the liquid refrigerant at low temperature and high pressure, the flow path leading to the first port of the second heat exchanging part from the refrigerant outlet of the first heat exchanger 101 is conducted, and the flow path leading to the second heat exchanger 102 is not conducted, where the fluid switching part 208 may be adjusted, for example, the first port 2081 of the fluid switching part is communicated with the second port 2082 of the fluid switching part, the first port 2081 of the fluid switching part is blocked from the third port 2083 of the fluid switching part, the second port of the second heat exchanging part is communicated with the first port of the third heat exchanger through the fluid control device 2000, or the refrigerant flowing through the second heat exchanging part exchanges heat with part of the refrigerant flowing through the first heat exchanging part, and the refrigerant flowing through the first sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, where the "corresponding second flat tube" refers to the second flat tube attached to the first flat tube in the first sub-part; the fluid switching part may also be adjusted to communicate the first port 2081 of the fluid switching part with the third port 2083 of the fluid switching part and to block the first port 2081 of the fluid switching part from the second port 2082 of the fluid switching part, at this time, the third port of the second heat exchanging part is communicated with the first port of the third heat exchanger through the fluid control device, at this time, the refrigerant flowing through the first sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant flowing through the second sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant discharged from the second heat exchanging part is changed into a liquid refrigerant of lower temperature and higher pressure, and the refrigerant flowing through the second heat exchanging part exchanges heat with all the refrigerant flowing through the first heat exchanging part; as used herein, the term "corresponding second flat tube" refers to a second flat tube that is attached to a first flat tube in the first sub-section or "corresponding second flat tube" refers to a second flat tube that is attached to a first flat tube in the second sub-section. Accordingly, the flow rate adjusting unit is adjusted to turn on the first port and the second port, the valve unit is turned off, the throttle unit is turned on, and the low-temperature and low-pressure liquid refrigerant exchanges heat with air around the heat exchanger in the third heat exchanger 103 to absorb heat of the air. The fan 303 arranged near the third heat exchanger 103 blows air around the third heat exchanger 103 to form air flow, accelerates heat exchange between the third heat exchanger 103 and the surrounding air, absorbs heat in the air, and changes the heat into a gas-liquid mixed refrigerant; the refrigerant in the third heat exchanger 103 enters the first heat exchanging portion through the first fluid switching device 201, exchanges heat with the refrigerant in the second heat exchanging portion, turns into a lower-temperature and lower-pressure gas refrigerant, and enters the compressor. The intermediate heat exchanger 203 and the fluid control device 2000 are arranged on the heat management system, so that when the heat management system heats, the refrigerant flowing through the second heat exchange part and the whole refrigerant or part of the refrigerant flowing through the first heat exchange part can be selected to exchange heat according to working conditions, the requirement of the heat management system on the heat exchange amount of the intermediate heat exchanger can be favorably met, and the performance of the heat management system can be favorably improved. When the refrigerant may be in a liquid state or a gas-liquid two-phase state, a gas-liquid separator may be disposed in front of the second port of the first heat exchanging portion, the liquid refrigerant is stored in the gas-liquid separator through separation by the gas-liquid separator 207, and the low-temperature and low-pressure gaseous refrigerant enters the first heat exchanging portion, exchanges heat with the refrigerant in the second heat exchanging portion, then enters the compressor, is compressed into the high-temperature and high-pressure refrigerant by the compressor 10 again, and thus the cycle operation is performed; in addition, in the case that the compressor can bear liquid refrigerant, the gas-liquid separator 207 may not be provided, and the gas-liquid separator 207 may be replaced by a liquid receiver. And a gas-liquid separator may not be provided in the case where the refrigerant is not a two-phase flow.

When the temperature in the passenger compartment is high and needs to be reduced to improve the comfort level, the thermal management system enters a cooling mode, referring to fig. 10 and fig. 16, specifically taking fig. 10 as an example for description, the refrigerant is compressed by the compressor 10 and then becomes a high-temperature and high-pressure refrigerant, the refrigerant discharged by the compressor 10 enters the first heat exchanger 101, at this time, the temperature damper 302 of the first heat exchanger is closed, the airflow bypasses the first heat exchanger 101, the first heat exchanger 101 does not substantially participate in heat exchange, the first heat exchanger 101 is a flow channel of the refrigerant, the first fluid switching device 201 is controlled to be in the first working state, the refrigerant discharged by the first heat exchanger 101 enters the second port of the third heat exchanger 103 through the first valve device, the refrigerant exchanges heat with the ambient air at the third heat exchanger 103, releases heat to the ambient air, and becomes a relatively low-temperature and high-pressure refrigerant, the refrigerant cooled by the third heat exchanger 103 enters the second port of the second heat exchanging part through the valve unit 206, and specifically, the flow regulating part is adjusted to conduct the first interface and the second interface, the valve unit is opened, and the throttling unit is closed. The fluid switching portion 208 may be adjusted, for example, the first port 2081 of the fluid switching portion is communicated with the second port 2082 of the fluid switching portion, the first port 2081 of the fluid switching portion is blocked from the third port 2083 of the fluid switching portion, and the second port of the second heat exchanging portion is communicated with the first port of the third heat exchanger through the fluid control device 2000, or the refrigerant flowing through the second heat exchanging portion exchanges heat with part of the refrigerant flowing through the first heat exchanging portion, and at this time, the refrigerant flowing through the first sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube; the fluid switching part may also be adjusted to communicate the first port 2081 of the fluid switching part with the third port 2083 of the fluid switching part and to block the first port 2081 of the fluid switching part from the second port 2082 of the fluid switching part, at this time, the third port of the second heat exchanging part is communicated with the first port of the third heat exchanger through the fluid control device, at this time, the refrigerant flowing through the first sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant flowing through the second sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant discharged from the second heat exchanging part is changed into a liquid refrigerant of lower temperature and higher pressure, and the refrigerant flowing through the second heat exchanging part exchanges heat with all the refrigerant flowing through the first heat exchanging part; the relatively low-temperature and high-pressure refrigerant discharged from the first port of the second heat exchanging part enters the second heat exchanger 102 after being throttled and depressurized by the first throttling device 202, at this time, the refrigerant outlet of the second heat exchanger is communicated with the first port of the second heat exchanging part, the refrigerant of the second heat exchanger 102 absorbs heat of air flow, or the refrigerant cools ambient air in the second heat exchanger 102, and the refrigerant in a liquid-liquid mixed state discharged from the refrigerant outlet of the second heat exchanger enters the first heat exchanging part. The intermediate heat exchanger 203 and the fluid control device 2000 are arranged on the heat management system, so that when the heat management system is used for refrigerating, the refrigerant flowing through the second heat exchange part can be selected to exchange heat with all or part of the refrigerant flowing through the first heat exchange part according to working conditions, the requirement of the heat management system on the heat exchange capacity of the intermediate heat exchanger can be met, and the performance of the heat management system can be improved.

When the relative humidity of the passenger compartment of the vehicle is high, water vapor in the air is easy to condense on the window glass to affect the visual field, which forms a safety hazard, so that the dehumidification of the air in the passenger compartment, namely, the dehumidification mode of the heat management system, including the first dehumidification mode and the second dehumidification mode, is required. The first dehumidification mode may be used when the heating demand is not large. Referring to fig. 12 and 18, a first dehumidification mode will be described with reference to fig. 12 as an example, when the first valve device is controlled to be in the first working state, the refrigerant outlet of the first heat exchanger 101 is communicated with the second port of the third heat exchanger 103, the valve unit 206 makes the communication channel between the first port of the third heat exchanger 103 and the second port of the second heat exchanging part communicated, the refrigerant entering the second heat exchanging part enters the first throttling device 202 through the first port of the second heat exchanging part, the first throttling device 202 is turned on, the refrigerant is compressed by the compressor 10 and then turns into high-temperature and high-pressure gas, the refrigerant discharged by the compressor 10 enters the first heat exchanger 101, the temperature damper 302 is opened at this time, the refrigerant is heat exchanged with ambient air in the first heat exchanger 101, the ambient air absorbs heat of the refrigerant in the first heat exchanger 101 to increase the temperature, the refrigerant enters the third heat exchanger 103 through the first fluid switching device 201, the refrigerant exchanges heat with air around the third heat exchanger 103, releases heat to the ambient air, and becomes a low-temperature and high-pressure refrigerant, and specifically, the flow rate adjusting portion is adjusted to communicate the first port with the second port, the valve unit is opened, and the throttle unit is closed, accordingly. The fluid switching portion 208 may be adjusted, for example, the first port 2081 of the fluid switching portion is communicated with the second port 2082 of the fluid switching portion, the first port 2081 of the fluid switching portion is blocked from the third port 2083 of the fluid switching portion, and the second port of the second heat exchanging portion is communicated with the first port of the third heat exchanger through the fluid control device 2000, or the refrigerant flowing through the second heat exchanging portion exchanges heat with part of the refrigerant flowing through the first heat exchanging portion, and at this time, the refrigerant flowing through the first sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube; the fluid switching portion may be adjusted such that the first port 2081 of the fluid switching portion is communicated with the third port 2083 of the fluid switching portion, the first port 2081 of the fluid switching portion is blocked from the second port 2082 of the fluid switching portion, the third port of the second heat exchanging portion is communicated with the first port of the third heat exchanger through the fluid control device, the refrigerant flowing through the first sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant flowing through the second sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant discharged from the second heat exchanging portion is changed into a liquid refrigerant of a lower temperature and a higher pressure, and the refrigerant flowing through the second heat exchanging portion exchanges heat with the entire refrigerant flowing through the first heat exchanging portion. And then the refrigerant enters the second heat exchanger through the first throttling device, at the moment, the refrigerant is subjected to heat exchange with ambient air in the second heat exchanger 102 to absorb the heat of the ambient air, the air around the second heat exchanger 102 is cooled and dehumidified, water vapor in the air is condensed and separated out when meeting low temperature so as to achieve the purpose of dehumidification, and the refrigerant is discharged from the second heat exchanger and then enters the first heat exchanging part to exchange heat with the refrigerant in the second heat exchanging part. At this moment, the temperature air door 302 in front of the first heat exchanger 101 of the air-conditioning box body is completely opened, the air flow is cooled and dehumidified through the second heat exchanger 102 to become low-temperature and low-humidity air flow, then the air flow is heated into low-humidity air flow through the first heat exchanger 101, and the heated air flow enters the automobile room through the grille to realize the function of dehumidifying the automobile room. In the first dehumidification mode, the air around the first heat exchanger 101 absorbs only a part of the heat of the refrigerant, the third heat exchanger 103 acts as a condenser to release heat to the ambient air, the second heat exchanger 102 acts as an evaporator to absorb the heat around the second heat exchanger, and performs cooling and dehumidification functions on the air entering the vehicle interior, and the first heat exchanger 101 performs heating function on the air entering the vehicle interior. It can be known that, in the first dehumidification mode, the thermal management system is provided with the intermediate heat exchanger 203 and the fluid control device 2000, and the refrigerant flowing through the second heat exchange portion and the whole refrigerant or part of the refrigerant flowing through the first heat exchange portion can be selected to exchange heat according to the working conditions, so that the requirement of the thermal management system on the heat exchange amount of the intermediate heat exchanger can be met, and the performance of the thermal management system can be improved.

When the air temperature is low and the heating requirement is large, a second dehumidification mode is used, please refer to fig. 11 and 17, the second dehumidification mode is described below by taking fig. 11 as an example, in the second dehumidification mode, the temperature damper 302 is opened, the first valve device is controlled to be in the second working state, the refrigerant outlet of the first heat exchanger 101 is communicated with the first throttling device in front of the second heat exchanger 102 through the first fluid switching device 201, the first throttling device 202 is opened, the refrigerant outlet of the first heat exchanger 101 is communicated with the first port of the second heat exchanging portion, and the throttling unit 205 is opened. Specifically, the refrigerant is compressed by the compressor 10 and then becomes a high-temperature high-pressure gas, the refrigerant discharged by the compressor 10 enters the first heat exchanger 101, at this time, the temperature damper 302 is opened, the high-temperature high-pressure refrigerant exchanges heat with the air around the first heat exchanger 101 in the first heat exchanger 101, and heat is released to the air around the first heat exchanger; part of the refrigerant enters the first throttling device 202, the refrigerant is throttled and depressurized by the first throttling device 202 to be changed into a low-temperature and low-pressure medium, the low-temperature and low-pressure refrigerant exchanges heat with ambient air in the second heat exchanger 102 to absorb heat of the ambient air, the air is condensed and separated out due to the low humidity of the surface of the second heat exchanger 102, the air is cooled and dehumidified, and the refrigerant enters the first heat exchanging part through a refrigerant outlet of the second heat exchanger; the fluid switching portion 208 may be adjusted, for example, to connect the first port 2081 of the fluid switching portion with the second port 2082 of the fluid switching portion, to block the first port 2081 of the fluid switching portion from the third port 2083 of the fluid switching portion, and to connect the second port of the second heat exchanging portion with the first port of the third heat exchanger through the fluid control device 2000, or to exchange heat between the refrigerant flowing through the second heat exchanging portion and part of the refrigerant flowing through the first heat exchanging portion, and then the refrigerant flowing through the first sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube, where the "corresponding second flat tube" refers to the second flat tube attached to the first flat tube in the first sub-portion; the fluid switching part may also be adjusted to communicate the first port 2081 of the fluid switching part with the third port 2083 of the fluid switching part and to block the first port 2081 of the fluid switching part from the second port 2082 of the fluid switching part, at this time, the third port of the second heat exchanging part is communicated with the first port of the third heat exchanger through the fluid control device, at this time, the refrigerant flowing through the first sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant flowing through the second sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tube, the refrigerant discharged from the second heat exchanging part is changed into a liquid refrigerant of lower temperature and higher pressure, and the refrigerant flowing through the second heat exchanging part exchanges heat with all the refrigerant flowing through the first heat exchanging part; as used herein, the term "corresponding second flat tube" refers to a second flat tube that is attached to a first flat tube in the first sub-section or "corresponding second flat tube" refers to a second flat tube that is attached to a first flat tube in the second sub-section. Accordingly, the flow rate adjusting portion is adjusted to turn on the first port and the second port, the valve unit is turned off, the throttle unit is opened, the low-temperature and low-pressure refrigerant exchanges heat with the ambient air in the third heat exchanger 103, absorbs heat of the ambient air, becomes the low-temperature and low-pressure refrigerant, and then enters the first heat exchanging portion to exchange heat with the refrigerant of the second heat exchanging portion. In the second dehumidification mode, the thermal management system is provided with the intermediate heat exchanger 203 and the fluid control device 2000, and the heat exchange between the refrigerant flowing through the second heat exchange portion and the whole refrigerant or part of the refrigerant flowing through the first heat exchange portion can be selected according to the working conditions, so that the requirement of the thermal management system on the heat exchange amount of the intermediate heat exchanger can be met, and the performance of the thermal management system can be improved.

The heat management system is provided with an intermediate heat exchanger, a second heat exchange part of the intermediate heat exchanger comprises a first port, a second port and a third port, and in the same working mode of the heat management system, the second port of the second heat exchange part or the third port of the second heat exchange part can be communicated with the first port of the third heat exchanger through a throttling unit, or the first port of the third heat exchanger can be communicated with the second port of the second heat exchange part or the third port of the second heat exchange part through a valve unit; the heat exchange between the refrigerant flowing through the second heat exchange part and all or part of the refrigerant flowing through the first heat exchange part can be selected through the fluid control device, and the heat exchange amount of the intermediate heat exchanger can be selected by the heat management system according to working conditions, so that the requirement of the heat management system on the heat exchange amount of the intermediate heat exchanger is favorably met, and the performance of the heat management system is favorably improved relatively.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.

Claims

1. A heat management system comprises a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger and an intermediate heat exchanger, wherein the intermediate heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part can exchange heat with at least part of the second heat exchange part, a first port of the first heat exchange part is communicated with an inlet of the compressor, a second port of the first heat exchange part can be communicated with a refrigerant outlet of the second heat exchanger and/or communicated with a second port of the third heat exchanger, and a first port of the second heat exchange part can be communicated with a refrigerant outlet of the first heat exchanger or communicated with a refrigerant inlet of the second heat exchanger;

the heat management system further comprises a fluid control device, wherein the first port of the third heat exchanger can be communicated with the second port of the second heat exchanging part through the fluid control device, or the first port of the third heat exchanger can also be communicated with the third port of the second heat exchanging part through the fluid control device; when the first port of the third heat exchanger is communicated with the second port of the second heat exchanging part, the first heat exchanging part can exchange heat with part of the second heat exchanging part, and when the first port of the third heat exchanger is communicated with the third port of the second heat exchanging part, the first heat exchanging part can exchange heat with all the second heat exchanging parts;

the working modes of the heat management system comprise a heating mode, a cooling mode and a dehumidifying mode, and in at least one working mode of the heat management system, the first port of the third heat exchanger can be selectively communicated with the second port of the second heat exchanging part or the third port of the second heat exchanging part through the fluid control device;

the fluid control device comprises a flow regulating part, the flow regulating part comprises a first interface and a second interface, and the first interface is communicated with a first port of the third heat exchanger; the flow amount adjustment portion includes a valve unit and a throttle unit, the first interface being communicable with the second interface through the valve unit, the second interface being communicable with the first interface through the throttle unit, the throttle unit making a passage between the first port of the third heat exchanger and the third port of the second heat exchanging portion non-conductive in the cooling mode, the valve unit making a passage between the first port of the third heat exchanger and the second port of the second heat exchanging portion conductive, refrigerant being flowable in a refrigerant passage between the first port of the second heat exchanging portion and the second port of the second heat exchanging portion, refrigerant being flowable in a refrigerant passage between the first port of the first heat exchanging portion and the second port of the first heat exchanging portion, refrigerant flowing through a part of a refrigerant flow passage of the second heat exchanging portion, the refrigerant flowing through the second heat exchanging portion can exchange heat with a portion of the refrigerant flowing through the first heat exchanging portion.

2. The thermal management system of claim 1, wherein the fluid control device further comprises a fluid switching portion, a first port of the fluid switching portion being communicable with a second port of the fluid switching portion or with a third port of the fluid switching portion, the flow regulating portion being disposed in series with the fluid switching portion, the first port of the fluid switching portion being in communication with the second interface, the second port of the fluid switching portion being in communication with the second port of the second heat exchanging portion, the third port of the fluid switching portion being in communication with the third port of the second heat exchanging portion.

3. The thermal management system of claim 1, wherein the fluid control device comprises two flow regulating portions arranged in parallel, first interfaces of the two flow regulating portions are in communication with the first port of the third heat exchanger, a second interface of one of the flow regulating portions is in communication with the second port of the second heat exchanging portion, and a second interface of the other flow regulating portion is in communication with the third port of the second heat exchanging portion.

4. The thermal management system of claim 2 or 3, wherein the valve unit and the throttling unit are provided separately; the valve unit comprises two ports, a first port of the valve unit can be communicated with the second interface, a first port of the throttling unit can be communicated with the second interface, and both the second port of the throttling unit and the second port of the valve unit can be communicated with the first interface; or the valve unit comprises three ports, a first port of the valve unit can be communicated with the first interface, a second port of the valve unit can be communicated with the second interface, a third port of the valve unit can be communicated with the second port of the throttling unit, and the first port of the throttling unit can be communicated with the second interface;

or, the valve unit and the throttling unit are integrally arranged, the flow regulating part includes a valve body, a valve core and a valve seat, the first interface and the second interface are arranged on the valve body, the valve body further includes a first valve port, the valve seat includes a second valve port, when the valve seat is located at a first working position, the valve seat closes the first valve port, the valve core can move relative to the second valve port and can open or close the second valve port or regulate the opening degree of the second valve port, and the second interface is communicated with the first interface through the second valve port; when the valve seat is located at the second working position, the valve seat opens the first valve port, and the first port can be communicated with the second port through the first valve port.

5. The thermal management system of any of claims 1-4, comprising a first throttling device disposed at a refrigerant inlet of said second heat exchanger; the heat management system further comprises a first valve device which comprises a first communication port, a second communication port, a third communication port and a fourth communication port, wherein the first communication port is communicated with the refrigerant outlet of the first heat exchanger, the fourth communication port is communicated with the second port of the first heat exchange portion or communicated with the second port of the first heat exchange portion through a gas-liquid separator, the second communication port can be communicated with the refrigerant inlet of the second heat exchanger through the first throttling device, the second communication port can be communicated with the first port of the second heat exchange portion, and the third communication port is communicated with the second port of the third heat exchanger,

the first valve device comprises a first working state and a second working state, the first working state of the first valve device is that the first communication port is communicated with the third communication port, the fourth communication port is not communicated with the communication channel between the second communication ports, the second working state of the first valve device is that the first communication port of the first valve device is communicated with the second communication port, and the third communication port is communicated with the fourth communication port.

6. The thermal management system of claim 5, wherein the first valve device includes a first fluid switching device including a first inlet port in communication with the first communication port, a first valve port in communication with the third communication port, a second valve port in communication with the fourth communication port, and a third valve port in communication with the second communication port, wherein in a first operating condition of the first valve device, a communication passage between the first inlet port of the first fluid switching device and the first valve port is conductive, and a communication passage between the second valve port and the third valve port is relatively non-conductive, and wherein in a second operating condition of the first valve device, a communication passage between the first inlet port of the first fluid switching device and the third valve port is conductive, the communication passage between the first valve hole and the second valve hole is communicated.

7. The thermal management system of claim 5, wherein the first valve device includes a second fluid switching device and a first valve element, the second fluid switching device includes a second inlet port, a fourth valve port, a fifth valve port, and a sixth valve port, two ports of the first valve element communicate with the sixth valve port and the second communication port, respectively, the fifth valve port communicates with the fourth communication port, the fourth valve port communicates with the third communication port, the second inlet port communicates with the first communication port, in a first operating state of the first valve device, the second inlet port of the second fluid switching device communicates with a communication passage of the fourth valve port, the fifth valve port communicates with a communication passage of the sixth valve port, the first valve device closes the first valve element, in a second operating state of the first valve device, the second inlet of the second fluid switching device is communicated with the communication channel of the sixth valve hole, the fourth valve hole is communicated with the communication channel of the fifth valve hole, and the first valve device opens the first valve member.

8. The thermal management system of any of claims 1-4, comprising a second valve device comprising a first valve module, a second valve module, and a third valve module, wherein a first port of the first valve module is in communication with an outlet of the compressor, a first port of the second valve module is in communication with an outlet of the compressor, a second port of the first valve module is in communication with a refrigerant inlet of the first heat exchanger, a second port of the second valve module is in communication with a second port of a third heat exchanger, a first port of the third valve module is in communication with a second port of the third heat exchanger, and a second port of the third valve module is in communication with a second port of the second heat exchange section;

or the second valve device comprises a first three-way valve and a third valve module, a first connecting port of the first three-way valve is communicated with an outlet of the compressor, a second connecting port of the first three-way valve is communicated with a refrigerant inlet of the first heat exchanger, a third connecting port of the first three-way valve is communicated with a second port of a third heat exchanger, the third connecting port is communicated with a first port of the third valve module, a second port of the third valve module is communicated with a refrigerant outlet of the second heat exchanger, and a second port of the third valve module is communicated with a second port of the second heat exchanging part;

or the second valve device comprises a second three-way valve and the first valve module, a second connection port of the second three-way valve and a first port of the first valve module are communicated with an outlet of the compressor, a second port of the first valve module is communicated with a refrigerant inlet of the first heat exchanger, a first connection port of the second three-way valve is communicated with a second port of the third heat exchanger, a third connection port of the second three-way valve is communicated with a refrigerant outlet of the second heat exchanging part, and a third connection port of the second three-way valve is communicated with a second port of the second heat exchanging part.

9. The thermal management system of any of claims 5-8, wherein the dehumidification mode of the thermal management system comprises a first dehumidification mode and a second dehumidification mode,

in a heating mode of the thermal management system, an outlet of the compressor is communicated with a refrigerant inlet of the first heat exchanger, a first port of the second heat exchange part is communicated with a refrigerant outlet of the first heat exchanger, refrigerant flowing through the first heat exchanger releases heat in the first heat exchanger, a second port of the second heat exchange part or a third port of the second heat exchange part is communicated with a second port of the third heat exchanger through the fluid control device, the first interface and the second interface are communicated through the flow regulating part, the valve unit is closed, the throttling unit is opened, refrigerant flowing through the third heat exchanger can absorb heat in the third heat exchanger, and refrigerant flowing through the second heat exchange part is in heat exchange with at least part of refrigerant flowing through the first heat exchange part;

in a cooling mode of the heat management system, an outlet of the compressor is communicated with a second port of the third heat exchanger or communicated with the second port of the third heat exchanger through the first heat exchanger, refrigerant flowing through the third heat exchanger releases heat in the third heat exchanger, a first port of the third heat exchanger is communicated with a second port of the second heat exchanging part or a third port of the second heat exchanging part through the fluid control device, the flow regulating part enables the first port and the second port to be communicated, the valve unit is opened, the throttling unit is closed, the first port of the second heat exchanging part is communicated with a refrigerant inlet of the second heat exchanger through a first throttling device, the first throttling device is opened, a refrigerant outlet of the second heat exchanger is communicated with the second port of the first heat exchanging part, and refrigerant flowing through the second heat exchanger can absorb heat in the second heat exchanger, the refrigerant flowing through the second heat exchanging part exchanges heat with at least part of the refrigerant flowing through the first heat exchanging part;

in a first dehumidification mode of the thermal management system, an outlet of the compressor is communicated with a refrigerant inlet of the first heat exchanger, an outlet of the compressor is communicated with a second port of the third heat exchanger or communicated with a second port of the third heat exchanger through the first heat exchanger, refrigerant flowing through the first heat exchanger can release heat at the first heat exchanger, refrigerant flowing through the third heat exchanger can release heat at the third heat exchanger, a first port of the third heat exchanger is communicated with a second port of the second heat exchange part or a third port of the second heat exchange part through the fluid control device, the flow regulating part enables the first port and the second port to be communicated, the valve unit is opened, the throttling unit is closed, and a first port of the second heat exchange part is communicated with a refrigerant inlet of the second heat exchanger through the first throttling device, the first throttling device is opened, a refrigerant outlet of the second heat exchanger is communicated with a second port of the first heat exchanging part, refrigerant flowing through the second heat exchanger can absorb heat in the second heat exchanger, and the refrigerant flowing through the second heat exchanging part exchanges heat with at least part of refrigerant flowing through the first heat exchanging part;

in a second dehumidification mode of the thermal management system, an outlet of the compressor is communicated with a refrigerant inlet of the first heat exchanger, refrigerant flowing through the first heat exchanger releases heat in the first heat exchanger, a first port of the second heat exchange portion is communicated with a refrigerant outlet of the first heat exchanger, a refrigerant inlet of the second heat exchanger is communicated with a refrigerant outlet of the first heat exchanger through the first throttling device, a second port of the second heat exchange portion or a third port of the second heat exchange portion is communicated with a second port of the third heat exchanger through the fluid control device, the first interface and the second interface are communicated through the flow regulating portion, the valve unit is closed, the throttling unit is opened, refrigerant flowing through the third heat exchanger can absorb heat in the third heat exchanger, and the first throttling device is opened, the refrigerant flowing through the second heat exchanger can absorb heat in the second heat exchanger, and the refrigerant flowing through the second heat exchange part exchanges heat with at least part of the refrigerant flowing through the first heat exchange part.