CN110530063B - Thermal management system - Google Patents

Thermal management system Download PDF

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Publication number
CN110530063B
CN110530063B CN201810498123.0A CN201810498123A CN110530063B CN 110530063 B CN110530063 B CN 110530063B CN 201810498123 A CN201810498123 A CN 201810498123A CN 110530063 B CN110530063 B CN 110530063B
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port
heat exchanger
valve
heat
communicated
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CN201810498123.0A
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CN110530063A (en
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不公告发明人
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Sanhua Holding Group Co Ltd
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Sanhua Holding Group Co Ltd
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Priority to CN201810498123.0A priority Critical patent/CN110530063B/en
Priority to EP19808173.9A priority patent/EP3798535A4/en
Priority to PCT/CN2019/087370 priority patent/WO2019223612A1/en
Publication of CN110530063A publication Critical patent/CN110530063A/en
Priority to US17/100,703 priority patent/US12011972B2/en
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Publication of CN110530063B publication Critical patent/CN110530063B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a heat management system which comprises an intermediate heat exchanger, a valve unit and a throttling unit, 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 first port of the second heat exchange part is communicated with the first port of the second heat exchanger through the throttling unit, the second port of the second heat exchange part is communicated with the first port of the second heat exchanger through the valve unit, and refrigerant flowing through the second heat exchange part can exchange heat with part of 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 arranging the intermediate heat exchanger in the thermal management system, when the thermal management system works, the two heat exchange parts of the intermediate heat exchanger basically participate in heat exchange, however, the heat exchange amount of the intermediate heat exchanger required by the working of the thermal management system is not constant all the time, and therefore, it is necessary to improve the prior art 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 flow control device, wherein the flow control device comprises a throttling unit and a valve unit, a first port of the third heat exchanger can be communicated with a third port of the second heat exchanging part through the valve unit, and a second port of the second heat exchanging part can be communicated with the first port of the third heat exchanger through the throttling unit;
the operation modes of the heat management system comprise a heating mode and a first dehumidification mode, in at least one operation mode of the heat management system, the throttling unit opens a passage between the first port of the third heat exchanger and the second port of the second heat exchanging part, or the throttling unit and the valve unit open a passage between the first port of the third heat exchanger and the second port of the second heat exchanging part, the valve unit makes the passage between the first port of the third heat exchanger and the third port of the second heat exchanging part non-conductive, and refrigerant flowing through the second heat exchanging part can exchange heat with refrigerant flowing through part of the first heat exchanging part.
The heat management system is provided with an intermediate heat exchanger, a first heat exchange portion of the intermediate heat exchanger comprises a first port, a second port and a third port, when the heat management system is in a heating mode and/or a first dehumidification mode, refrigerant flowing through the second heat exchange portion exchanges heat with part of refrigerant flowing through the first heat exchange portion, or when the heat management system is in the heating mode and/or the first dehumidification mode, the requirement of the heat management system on the heat exchange amount of the intermediate heat exchanger is met by using the part of heat exchange amount of the intermediate heat exchanger, and therefore the performance of the heat management system is favorably and relatively improved.
[ 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 dehumidification mode;
FIG. 12 is a schematic view of a thermal management system according to another aspect of the present invention;
FIG. 13 is a schematic view of the heat management system of FIG. 12 in a heating mode;
FIG. 14 is a schematic illustration of the heat management system of FIG. 12 in a cooling mode;
FIG. 15 is a schematic view of the heat management system of FIG. 12 in a dehumidification mode;
FIG. 16 is a schematic view of a first fluid switching device of the thermal management system shown in FIG. 8;
FIG. 17 is a schematic view of the connection of a second fluid switching device to a first valve element of the thermal management system;
fig. 18 is a schematic view of a connection of the intermediate heat exchanger, the valve unit and the throttle unit.
[ 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, the cavity of the first collecting pipe is communicated with the 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. 8-18 and fig. 1, the thermal management system includes a flow control device including a first interface (not shown) in communication with a first port of the third heat exchanger 103, a second interface (not shown) in communication with a second port 21 of the second heat exchanging part, and a third interface (not shown) in communication with a third port 22 of the second heat exchanging part; specifically, the flow control device includes a throttle unit 205 and a valve unit 206, and the first port and the second port communicate through the throttle unit 205, and the first port and the third port communicate through the valve unit 206. In other words, the throttling unit 205 is disposed between the second port of the second heat exchanging part and the first port of the third heat exchanger 103, and is used for throttling the refrigerant entering the third heat exchanger; 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 third interface, a first port of the throttling unit 205 communicates with the second interface, and both a 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 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 third 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 being in communication with the second interface; wherein, the valve unit can be a three-way valve or a three-way flow regulating valve. The valve unit 206 and the throttling unit 205 may also be integrally provided, and the flow control device includes a valve body, wherein the first port, the second port and the third port are provided in the valve body, and the flow control device also includes a valve core and a valve port which are correspondingly provided, and will not be described in detail. 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 third port. 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. 16, 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, specifically referring to fig. 17, 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. 12-15, 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 thermal management system comprises a heating mode, a cooling mode and a dehumidifying mode, and the working conditions of the thermal management system in the modes are described below respectively. When the ambient temperature is low and the passenger compartment requires heat to enhance passenger comfort, the thermal management system enters a heating mode, see fig. 9 and 13. 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, at this time, 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 of the refrigerant outlet of the first heat exchanger 101 to the first port of the second heat exchanging part is conducted, the flow path to the second heat exchanger 102 is not conducted, and the refrigerant entering the first flat tube exchanges heat with the refrigerant entering the second flat tube at the joint of the two, at this time, the refrigerant flowing through the first sub-portion exchanges heat with the refrigerant flowing through the corresponding second flat tube, and at this time, 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. When the heat management system heats, only part of refrigerant flowing through the second flat tube exchanges heat with the refrigerant flowing through the first sub-part, specifically, the refrigerant enters the first sub-cavity through the first port 25, the refrigerant in the first sub-cavity enters the cavity of the first collecting pipe through the first sub-part and then flows out of the second heat exchanging part through the second port 21, and only the first flat tube of the first sub-part and the second flat tube at the corresponding position participate in heat exchange. Correspondingly, the refrigerant enters the third heat exchanger 103 after being throttled and depressurized by the throttling unit 205, 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 throttling unit 205 opens a passage between the second port of the second heat exchanging part and the first port of the third heat exchanger, or the throttling unit 205 and the valve unit 206 open a passage between the second port of the second heat exchanging part and the first port of the third heat exchanger, the valve unit 206 makes the passage between the third port of the second heat exchanging part and the first port of the third heat exchanger 103 not be conducted, a fan 303 arranged near the third heat exchanger 103 blows air around the third heat exchanger 103 to form air flow, heat exchange between the third heat exchanger 103 and ambient air is accelerated, and heat in the absorbed air is changed into 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 heat management system is provided with the intermediate heat exchanger 203, when the heat management system heats, the refrigerant exchanges heat sufficiently in the first heat exchanger, the temperature of the refrigerant at the outlet of the first heat exchanger is relatively low, or the temperature of the refrigerant at the first port of the second heat exchanging part is relatively low, and the heat exchange amount of the required intermediate heat exchanger is relatively small, so that the heat exchange between the refrigerant flowing through the second heat exchanging part and part of the refrigerant flowing through the first heat exchanging part can meet the requirement; in addition, during heating, the heat exchange amount of the intermediate heat exchanger 203 is relatively small, and the density of the refrigerant at the inlet of the compressor can be increased to increase the conveying amount of the refrigerant of the compressor. 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. 14, and 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 passage 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 third port of the second heat exchanging part through the valve unit 206, the relatively low-temperature and high-pressure refrigerant discharged from the first port of the second heat exchanging part enters the first throttling device 202, is throttled and depressurized and then enters the second heat exchanger 102, at this time, the refrigerant outlet of the second heat exchanger is communicated with the first port of the second heat exchanging part, the throttling unit 205 and/or the valve unit 206 are/is closed, the refrigerant of the second heat exchanger 102 absorbs heat of the airflow, or the refrigerant cools the surrounding 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. In the intermediate heat exchanger 203, the refrigerant entering the first flat tube exchanges heat with the refrigerant of the second flat tube at the joint, that is, 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, and the refrigerant discharged from the second heat exchange portion becomes a liquid refrigerant with lower temperature and higher pressure, where the "corresponding second flat tube" refers to the second flat tube jointed to the first flat tube in the first sub-portion or the "corresponding second flat tube" refers to the second flat tube jointed to the first flat tube in the second sub-portion. When the heat management system is used for refrigerating, the ambient temperature is generally high, heat exchange of the refrigerant in the third heat exchanger is relatively insufficient, the temperature of the refrigerant at the outlet of the third heat exchanger is relatively high, or the temperature of the refrigerant at the third port of the second heat exchange part is relatively high, the refrigerant needs to be further cooled in the second heat exchange part, so that the refrigerant flowing through the second heat exchange part exchanges heat with all the refrigerant flowing through the first heat exchange part, the refrigerating capacity of the refrigerant in the second heat exchanger is further improved, and the performance of the heat management system is favorably 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. When the air temperature is low and the heating requirement is large, a first dehumidification mode is used, please refer to fig. 11 and fig. 15, the first dehumidification mode is described below by taking fig. 11 as an example, in the first 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, and the refrigerant outlet of the first heat exchanger 101 is communicated with the first port of the second heat exchanging part; opening the throttling unit 205 and the first throttling device 202, and closing the throttling unit to form a communication channel between the third port of the second heat exchanging part and the first port of the second heat exchanger; the refrigerant is compressed by the compressor 10 and then is changed into high-temperature high-pressure gas, the refrigerant discharged by the compressor 10 enters the first heat exchanger 101, at the moment, the temperature damper 302 is opened, the high-temperature high-pressure refrigerant exchanges heat with 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 the first port of the second heat exchanger; similarly, the refrigerant enters the first sub-portion to exchange heat with the part of the refrigerant flowing through the first heat exchanging portion, and the "corresponding second flat tube" herein refers to the second flat tube attached to the first flat tube in the first sub-portion. When the thermal management system heats, only part of the refrigerant flowing through the second flat tube exchanges heat with the refrigerant flowing through the first sub-portion, specifically, the refrigerant enters the first sub-chamber 1201 through the first port 25, the refrigerant in the first sub-chamber enters the chamber of the first collecting pipe through the first sub-portion and then flows out of the second heat exchanging portion through the second port 21, and only the first flat tube of the first sub-portion and the second flat tube at the corresponding position participate in heat exchange. The refrigerant enters the throttling unit 205 from the second port of the second heat exchanging portion, is throttled by the throttling unit 205 and then is reduced in pressure to become a low-temperature low-pressure medium, and the low-temperature low-pressure refrigerant exchanges heat with ambient air in the second heat exchanger 102, absorbs heat of the ambient air, becomes a low-temperature low-pressure refrigerant, and then enters the first heat exchanging portion to exchange heat with the refrigerant of the second heat exchanging portion. It is noted that, in the first dehumidification mode, a portion of the refrigerant flowing through the first heat exchanging portion exchanges heat with the refrigerant flowing through the second heat exchanging portion, that is, the refrigerant flowing through the first flat tubes of the first sub-portion and the refrigerant flowing through the corresponding second flat tubes can exchange heat. Similarly, the intermediate heat exchanger 203 is arranged in the heat management system, when the heat management system is in the first dehumidification mode, the heat exchange of the refrigerant in the first heat exchanger is sufficient, the temperature of the refrigerant at the outlet of the first heat exchanger is relatively low, or the temperature of the refrigerant at the first port of the second heat exchange part is relatively low, and the required heat exchange amount of the intermediate heat exchanger is relatively small, so that the heat exchange between the refrigerant flowing through the second heat exchange part and part of the refrigerant flowing through the first heat exchange part can meet the requirement; in addition, during heating, the heat exchange amount of the intermediate heat exchanger 203 is relatively small, and the density of the refrigerant at the inlet of the compressor can be increased to increase the conveying amount of the refrigerant of the compressor.
The second dehumidification mode may be used when the heating demand is not large. The second dehumidification mode will be described with reference to the thermal management system shown in fig. 8, in which the first valve device is controlled to be in the first operation 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 conducts the passage between the first port of the third heat exchanger 103 and the third port of the second heat exchanging part, 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 turned on, 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 to release heat to the surrounding air and turns into low-temperature and high-pressure refrigerant, the refrigerant cooled by the third heat exchanger 103 enters the first flat tube through the valve unit 206, namely, the refrigerant entering the first flat tube exchanges heat with the refrigerant at the joint of the two corresponding second flat tubes, the refrigerant entering the first flat tube exchanges heat with the refrigerant at the joint of the two second flat tubes at the intermediate heat exchanger 203, namely, the refrigerant flowing through the first sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tubes, the refrigerant flowing through the second sub-part exchanges heat with the refrigerant flowing through the corresponding second flat tubes, and the refrigerant discharged from the second heat exchange part turns into liquid refrigerant with lower temperature and higher pressure, wherein the corresponding second flat tubes refer to the second flat tubes jointed with the first flat tubes in the first sub-part or the corresponding second flat tubes refer to the first flat tubes jointed in the second sub-part A second flat tube. And then the refrigerant enters the second heat exchanger through the first throttling device, the refrigerant exchanges heat with ambient air in the second heat exchanger 102 at the moment, the heat of the ambient air is absorbed, 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 enters the first heat exchanging part after being discharged from the second heat exchanger 102 and exchanges heat with the refrigerant of 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. When the heat management system is in the second dehumidification mode, although the refrigerant releases heat in the third heat exchanger, and then exchanges heat in the third heat exchanger, because the ambient temperature and the temperature in the air-conditioning box are high, the heat exchange between the refrigerant and the air flow is relatively insufficient, the temperature of the refrigerant at the outlet of the third heat exchanger is relatively high, or the temperature of the refrigerant at the third port of the second heat exchange part is relatively high, the refrigerant needs to be further cooled in the second heat exchange part, so that the refrigerant flowing through the second heat exchange part exchanges heat with all the refrigerant flowing through the first heat exchange part, and the refrigerating capacity of the refrigerant in the second heat exchanger is further improved, thereby being beneficial to improving the performance of the heat management system.
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, when the heat management system heats, refrigerant flows in a channel between the first port and the third port of the second heat exchange part, and all the refrigerant flowing through the first heat exchange part exchanges heat with the refrigerant flowing through the second heat exchange part; when the heat management system is used for refrigerating, the refrigerant flows in a channel between the second port and the first port of the second heat exchanging part, part of the refrigerant flowing through the first heat exchanging part exchanges heat with the refrigerant flowing through the second heat exchanging part, and when the intermediate heat exchanger is used for refrigerating and heating, the heat exchange amount of the intermediate heat exchanger is correspondingly adjusted by the heat management system, so that the working requirement of the heat management system is met, and the performance of the heat management system is favorably improved.
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 (13)

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 flow control device, wherein the flow control device comprises a throttling unit and a valve unit, a first port of the third heat exchanger can be communicated with a third port of the second heat exchanging part through the valve unit, and a second port of the second heat exchanging part can be communicated with the first port of the third heat exchanger through the throttling unit;
in at least one operation mode of the heat management system, the throttling unit opens a passage between the first port of the third heat exchanger and the second port of the second heat exchanging part, or the throttling unit and the valve unit open a passage between the first port of the third heat exchanger and the second port of the second heat exchanging part, the valve unit makes the passage between the first port of the third heat exchanger and the third port of the second heat exchanging part non-conductive, and refrigerant flowing through the second heat exchanging part can exchange heat with refrigerant flowing through part of the first heat exchanging part.
2. The thermal management system according to claim 1, wherein in a heating mode of the thermal management system, the outlet of the compressor is communicated with a refrigerant inlet of the first heat exchanger, the first port of the second heat exchange portion is communicated with a refrigerant outlet of the first heat exchanger, refrigerant flowing through the first heat exchanger releases heat at the first heat exchanger, the second port of the first heat exchange portion is communicated with the first port of the third heat exchanger through the throttling unit, the throttling unit is opened, and refrigerant flowing through the third heat exchanger can absorb heat at the third heat exchanger;
and/or, the heat management system comprises a first throttling device which is arranged at a refrigerant inlet of the second heat exchanger; in a first dehumidification mode of the thermal management system, an outlet of the compressor is in communication with a refrigerant inlet of the first heat exchanger, and refrigerant flowing through the first heat exchanger is capable of releasing heat at 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 first port of the second heat exchanging part is communicated with a refrigerant outlet of the first heat exchanger, and a second port of the second heat exchanging part is communicated with a first port of the third heat exchanger through the throttling unit; the refrigerant outlet of the second heat exchanger is communicated with the second port of the first heat exchange portion, the second port of the third heat exchanger is communicated with the second port of the first heat exchange portion, the throttling unit and the first throttling device are opened, refrigerant flowing through the second heat exchanger can absorb heat in the second heat exchanger, and refrigerant flowing through the third heat exchanger can absorb heat in the third heat exchanger.
3. The thermal management system of claim 2, wherein the flow control device comprises a first interface in communication with a first port of the third heat exchanger, a second interface in communication with a second port of the second heat exchange portion, and a third interface in communication with a third port of the second heat exchange portion; the first interface is communicated with the second interface through the throttling unit, and the first interface is communicated with the third interface through the valve unit.
4. The thermal management system of claim 1, wherein the flow control device comprises a first interface in communication with a first port of the third heat exchanger, a second interface in communication with a second port of the second heat exchange portion, and a third interface in communication with a third port of the second heat exchange portion; the first interface is communicated with the second interface through the throttling unit, and the first interface is communicated with the third interface through the valve unit.
5. The thermal management system of claim 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 is communicated with the third interface, a first port of the throttling unit is communicated with the second interface, and both the second port of the throttling unit and the second port of the valve unit are communicated with the first interface; or the number of the valve units is three, the first port of the valve unit is communicated with the first interface, the second port of the valve unit is communicated with the third interface, the third port of the valve unit is communicated with the second port of the throttling unit, and the first port of the throttling unit is communicated with the second interface;
or, the valve unit and the throttling unit are integrally arranged, the flow control device comprises a valve body, and the first interface, the second interface and the third interface are arranged on the valve body.
6. The thermal management system according to claim 5, further comprising a gas-liquid separator, an outlet of the gas-liquid separator being in communication with the second port of the first heat exchanging portion, an inlet of the gas-liquid separator being communicable with the second port of the third heat exchanger and/or the refrigerant outlet of the second heat exchanger.
7. The thermal management system according to any one of claims 1 to 6, further comprising a first valve device including a first communication port communicating with the refrigerant outlet of the first heat exchanger, a second communication port communicating with the refrigerant inlet of the second heat exchanger through the first throttling device, a third communication port communicating with the first port of the second heat exchanger, and a fourth communication port communicating 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.
8. The thermal management system of claim 7, 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 state of the first valve device, the communication passage between the first inlet port and the first valve port of the first fluid switching device is conductive, and the communication passage between the second valve port and the third valve port is relatively non-conductive, and wherein in a second operating state of the first valve device, the communication passage between the first inlet port and the third valve port of the first fluid switching device is conductive, the communication passage between the first valve hole and the second valve hole is communicated.
9. The thermal management system of claim 7, 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.
10. The thermal management system of any of claims 1-6, comprising a first throttling device disposed at a refrigerant inlet of said second heat exchanger; the thermal management system comprises a second valve device, the second valve device comprises a first valve module, a second valve module and a third valve module, a first port of the first valve module is communicated with an outlet of the compressor, a first port of the second valve module is communicated with the outlet of the compressor, a second port of the first valve module is communicated with a refrigerant inlet of the first heat exchanger, a second port of the second valve module is communicated with a second port of a third heat exchanger, a first port of the third valve module is communicated with a second port of the third 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 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.
11. The thermal management system of claim 8 or 9, further comprising a cooling mode,
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, the valve unit makes a passage between a first port of the third heat exchanger and a third port of the second heat exchanging part non-conductive, the valve unit and/or the throttling unit makes a passage between the first port of the third heat exchanger and a second port of the second heat exchanging part non-conductive, the first port of the second heat exchanging part is communicated with a refrigerant inlet of the second heat exchanger through the first throttling device, the first throttling device is opened, and a refrigerant outlet of the second heat exchanger is communicated with the second port of the first heat exchanging part, the refrigerant flowing through the second heat exchanger is capable of absorbing heat at the second heat exchanger.
12. The thermal management system of claim 7, further comprising a cooling mode,
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, the valve unit makes a passage between a first port of the third heat exchanger and a third port of the second heat exchanging part non-conductive, the valve unit and/or the throttling unit makes a passage between the first port of the third heat exchanger and a second port of the second heat exchanging part non-conductive, the first port of the second heat exchanging part is communicated with a refrigerant inlet of the second heat exchanger through the first throttling device, the first throttling device is opened, and a refrigerant outlet of the second heat exchanger is communicated with the second port of the first heat exchanging part, the refrigerant flowing through the second heat exchanger is capable of absorbing heat at the second heat exchanger.
13. The thermal management system of claim 10, further comprising a cooling mode,
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, the valve unit makes a passage between a first port of the third heat exchanger and a third port of the second heat exchanging part non-conductive, the valve unit and/or the throttling unit makes a passage between the first port of the third heat exchanger and a second port of the second heat exchanging part non-conductive, the first port of the second heat exchanging part is communicated with a refrigerant inlet of the second heat exchanger through the first throttling device, the first throttling device is opened, and a refrigerant outlet of the second heat exchanger is communicated with the second port of the first heat exchanging part, the refrigerant flowing through the second heat exchanger is capable of absorbing heat at the second heat exchanger.
CN201810498123.0A 2018-05-23 2018-05-23 Thermal management system Active CN110530063B (en)

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CN201810498123.0A CN110530063B (en) 2018-05-23 2018-05-23 Thermal management system
EP19808173.9A EP3798535A4 (en) 2018-05-23 2019-05-17 Thermal management system
PCT/CN2019/087370 WO2019223612A1 (en) 2018-05-23 2019-05-17 Thermal management system
US17/100,703 US12011972B2 (en) 2018-05-23 2020-11-20 Flat-tube intermediate heat exchanger and thermal management system

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