CN112432538B

CN112432538B - Heat exchange assembly and thermal management system

Info

Publication number: CN112432538B
Application number: CN202010793113.7A
Authority: CN
Inventors: 范学彬; 朱坤军; 周江峰
Original assignee: Sanhua Holding Group Co Ltd
Current assignee: Sanhua Holding Group Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-03-18
Anticipated expiration: 2040-08-07
Also published as: CN112432538A

Abstract

The application discloses a heat exchange assembly, which comprises a liquid storage assembly fixed on a first collecting pipe, wherein the liquid storage assembly comprises a cylinder part, a first one-way element and a second one-way element; the second one-way element is fixedly connected outside the cylinder part and controls the connection and disconnection of the second cavity and the outside of the heat exchange assembly at the second one-way element; the first unidirectional element and the second unidirectional element are in an on state and in an off state. In the heat exchange assembly of this application first one-way component was fixed in the section of thick bamboo portion, outside the second one-way component was fixed in the section of thick bamboo portion, was favorable to saving the pipeline component, can make heat exchange assembly's structure compacter. The application also provides a thermal management system.

Description

Heat exchange assembly and thermal management system

Technical Field

The application relates to the technical field of heat management, in particular to a heat exchange assembly and a heat management system.

Background

The heat management system in the related art comprises elements such as a heat exchanger, a liquid storage device and a valve, the system structure of the heat management system is complex, and the elements are connected together through pipelines, so that the whole heat management system occupies more space, and the system is not beneficial to miniaturization.

Disclosure of Invention

In view of the above problems in the related art, the present application provides a heat exchange assembly and a thermal management system with compact structure.

In order to achieve the purpose, the following technical scheme is adopted in the application:

one aspect provides a heat exchange assembly comprising: the heat exchange tube is connected with the first collecting pipe at one end and connected with the second collecting pipe at the other end, and the liquid storage assembly is fixed on the first collecting pipe;

the liquid storage assembly comprises a cylinder part, a first one-way element and a second one-way element, the first one-way element is fixed in the cylinder part, the first one-way element is circumferentially sealed with part of the inner wall surface of the cylinder part, the cylinder part is provided with a first cavity and a second cavity, the first cavity and the second cavity are both positioned in the inner wall surface of the cylinder part, the first cavity is communicated with the inner cavity of the first collecting pipe, the first one-way element has a conducting state and a stopping state, and the first one-way element controls the communication and the non-communication of the first cavity and the second cavity;

the second one-way element is fixedly connected outside the cylinder part, the second one-way element has a conducting state and a stopping state, and the second one-way element controls the communication and the non-communication between the second cavity and the outside of the heat exchange assembly at the second one-way element;

the liquid storage assembly has a first working state and a second working state, in the first working state of the liquid storage assembly, the first one-way element is in a conducting state, the first cavity is communicated with the second cavity, the second one-way element is in a stopping state, and the second cavity is not communicated with the outside of the heat exchange assembly at the second one-way element; in a second working state of the liquid storage assembly, the second one-way element is in a conducting state, the outside of the heat exchange assembly is communicated with the second cavity at the second one-way element, the first one-way element is in a stopping state, and the second cavity is not communicated with the first cavity.

The first one-way element of the heat exchange assembly is fixed in the cylinder part, and the second one-way element is fixed outside the cylinder part, so that the pipeline elements are saved, and the structure of the heat exchange assembly is more compact.

The heat exchange assembly comprises a first collecting pipe, a second collecting pipe, a heat exchange pipe and a liquid storage assembly, one end of the heat exchange pipe is connected to the first collecting pipe, the other end of the heat exchange pipe is connected to the second collecting pipe, and the liquid storage assembly is fixed to the first collecting pipe;

the heat management system comprises a refrigerating mode and a heating mode, wherein in the refrigerating mode, the first one-way element is in a conducting state, the first cavity is communicated with the second cavity, the second one-way element is in a stopping state, and the second cavity is not communicated with the outside of the heat exchange assembly at the second one-way element; in the heating mode, the second one-way element is in a conducting state, the outside of the heat exchange assembly is communicated with the second cavity at the second one-way element, the first one-way element is in a cut-off state, and the second cavity is not communicated with the first cavity.

The application provides a heat management system's heat exchange assembly is favorable to saving system's pipeline component, and the structure is compacter, does benefit to the miniaturization.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a heat exchange assembly of the present application;

FIG. 2 is a perspective cutaway schematic view of an embodiment of a heat exchange assembly of the present application;

FIG. 3 is an exploded isometric view of an embodiment of the heat exchange assembly of the present application;

FIG. 4 is a schematic perspective exploded view of a further exploded view of an embodiment of the heat exchange assembly of the present application;

FIG. 5 is a schematic cross-sectional view of a reservoir assembly of an embodiment of the heat exchange assembly of the present application;

FIG. 6 is an exploded perspective view of the second unidirectional element shown in FIG. 1;

FIG. 7 is an exploded perspective view of the first unidirectional element shown in FIG. 1;

FIG. 8 is an enlarged schematic view of the portion circled A shown in FIG. 2;

FIG. 9 is an enlarged schematic view of the portion indicated by circle B in FIG. 2;

FIG. 10 is a schematic diagram of an embodiment of a thermal management system of the present application;

FIG. 11 is a schematic view of a cooling mode of an embodiment of the thermal management system of the present application;

FIG. 12 is a schematic view of a heating mode of an embodiment of the thermal management system of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two or more than two. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The heat exchange assembly 100 according to the exemplary embodiment of the present application will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

According to an embodiment of the heat exchange assembly 100 of the present application, as shown in fig. 1 to 9, the heat exchange assembly 100 includes a first collecting pipe 1, a second collecting pipe 2, a heat exchange pipe 3, a liquid storage assembly 4, a three-way reversing valve 5, and at least two partitions 6. The at least two separators 6 include: a first separator 61 and a second separator 62.

The heat exchange tube 3 is connected between the first collecting tube 1 and the second collecting tube 2, and the inner cavity of the heat exchange tube 3 is communicated with the inner cavity of the first collecting tube 1 and the inner cavity of the second collecting tube 2. The inner cavity of the first header 1 forms two chambers by means of a first partition 61: the first chamber 11 and the second chamber 12 are not communicated in the first collecting pipe 1. The inner cavity of the second header 2 forms two chambers by means of a second partition 62: the third chamber 21 and the fourth chamber 22 are not communicated with each other in the second header 2, and the third chamber 21 and the fourth chamber 22 are not communicated with each other. The heat exchange tubes 3 include a plurality of, and a plurality of heat exchange tubes 3 divide into at least two nest of tubes: a first tube group 31 and a second tube group 32, the first chamber 11 being in communication with the third chamber 21 through the first tube group 31, and the second chamber 12 being in communication with the fourth chamber 22 through the second tube group 32.

In some other embodiments, referring to fig. 2, the heat exchange assembly 100 has at least two third partitions (not shown), so as to form a multi-flow design, and since the specific structure and operation principle of the multi-flow formed by the partitions are well known to those skilled in the art, the detailed description thereof is omitted here.

Referring to fig. 1 and 2, the liquid storage assembly 4 and the three-way reversing valve 5 are both installed and fixed on the outer side of the first collecting pipe 1, the liquid storage assembly 4 and the three-way reversing valve 5 are arranged along a direction parallel to the axis of the first collecting pipe 1, and the liquid storage assembly 4 is arranged substantially parallel to the first collecting pipe 1. The liquid storage assembly 4 comprises a cylinder part 41, a first one-way element 42, a second one-way element 43, a blocking cover 44 and at least two supporting pieces 45, wherein the first one-way element 42 and the at least two supporting pieces 45 are positioned in the cylinder part 41, the blocking cover 44 is at least partially positioned in the cylinder part 41, and the second one-way element 43 is arranged outside the cylinder part 41. The cylindrical portion 41 has a first end 411 and a second end 412 on both sides in a direction parallel to the axis of the first header 1, the cap 44 is fixed to the first end 411, and the three-way selector valve 5 is fixed to the second end 412. It should be noted that the first end 411 includes a portion of the cylindrical wall at one end of the cylindrical portion 41 and a cavity therein, and the second end 412 includes a portion of the cylindrical wall at the other end of the cylindrical portion 41 and a cavity therein.

In this embodiment, the first one-way element 42 is fixed in the cylinder portion 41, the first one-way element 42 is circumferentially sealed with the inner side wall surface of the cylinder portion 41 to divide the inner cavity of the cylinder portion 41 into a first cavity 413 and a second cavity 414, the first cavity 413 and the second cavity 414 are connected or disconnected by the first one-way element 42, the first cavity 413 is communicated with the first cavity 11 of the first header 1, and the second cavity 414 is communicated with the inner cavity of the three-way reversing valve 5. The circumferential sealing between the first unidirectional element 42 and the inner side wall surface of the cylinder 41 can be realized by fitting a part of outer side wall surface of the first unidirectional element 42 and the inner side wall surface of the cylinder 41, or by inwards recessing a part of outer side wall surface of the first unidirectional element 42 to form a groove, wherein the groove is used for placing a sealing ring, and the circumferential sealing is realized by the sealing ring, or by interference fit between other related structures and the cylinder 41. Optionally, the sealing ring is an O-ring.

The cap 44 is at least partially received within the barrel 41, and the cap 44 is secured to the first end 411 of the barrel 41. In one embodiment, the plug 44 is provided with a male thread, the inner cylindrical wall of the cylindrical portion 41 is provided with a female thread, and the plug 44 and the cylindrical portion 41 are fixed by the engagement between the female thread and the male thread. The cap 44 is screwed directly on to seal one end of the cylindrical portion 41, and the one end of the cylindrical portion 41 can be sealed without performing a second welding. In an alternative mode, the blocking cover 44 is a plastic member, which is beneficial to reducing the cost and the weight, and the blocking cover 44 may also be a metal member, which has better tolerance to the high-temperature refrigerant compared with the plastic member, so as to be beneficial to improving the sealing performance between the blocking cover 44 and the first end portion 411. A sealing ring may be provided between the cap 44 and the barrel 41 to further enhance the circumferential sealing effect. Optionally, the sealing ring is an O-ring.

Referring to fig. 5 and 8, a stepped portion 415 is provided inside the cylindrical portion 41, and the stepped portion 415 is formed by a portion of the inner side surface of the cylindrical portion 41 protruding inward. First unidirectional element 42 is placed on step 415, that is, the end surface of first unidirectional element 42 facing second cavity 414 is attached to the end surface of step 415 facing first unidirectional element 42. At least two supports 45 are arranged along the circumference of the first unidirectional element 42, the supports 45 being at least partially accommodated in the first chamber 413, one end of the supports 45 cooperating with the cap 44 and the other end cooperating with the first unidirectional element 42. Specifically, the end face of the supporting member 45 having one end is attached to the end face of the cap 44, the end face of the first unidirectional element 42 facing one side of the cap 44 is provided with a groove (not marked in the figure), the other end of the supporting member 45 is partially accommodated in the groove, and the limitation of the step portion 415 is combined, so that the first unidirectional element 42 is limited in the axial direction, and the possibility of axial displacement of the first unidirectional element 42 in the use process of the liquid storage assembly 4 is reduced. In other embodiments, the cap 44 may also have a groove for accommodating a portion of the supporting member 45, or the end surface of the first unidirectional element 42 does not have a groove, and the end surface of the supporting member 45 is attached to the end surface of the first unidirectional element 42, as long as one end of the supporting member 45 is matched with the cap 44 and the other end is matched with the first unidirectional element 42, which is not limited in this application.

In the present embodiment, the process of assembling the first unidirectional element 42 into the cylindrical portion 41 is: the assembled first one-way element 42 is pushed into the cylinder 41 along the first end 411 toward the second end 412 until one end face of the first one-way element 42 is attached to the end face of the stepped portion 415, then, one end of the supporting member 45 is inserted into the groove on the end face of the first unidirectional element 42, the supporting member 45 is preliminarily fixed (or the supporting member 45 is inserted into the first unidirectional element 42 first, and then the first unidirectional element 42 and the supporting member 45 are installed into the barrel portion 41 together), then, during the process of fitting the block cover 44 to the cylindrical portion 41, the block cover 44 pushes the support member 45 to continue moving downward, and after the fitting of the block cover 44 is completed, the support 45, the blocking cover 44 and the step 415 limit the axial movement of the first one-way element 42, and the circumferential sealing of the first one-way element 42 and the cylinder 41 limits the circumferential rotation of the first one-way element 42, so that the first one-way element 42 is fixed and limited in the cylinder 41.

The connecting part of the liquid storage assembly 4 and the first collecting pipe 1 is provided with a connecting piece 30, one side face of the connecting piece 30 is connected with the liquid storage assembly 4, the other side face of the connecting piece 30 is connected with the first collecting pipe 1, the connecting piece 30 is provided with a communicating cavity 301, and the communicating cavity 301 is communicated with the first cavity 11 of the first collecting pipe 1 and the first cavity 413 of the liquid storage assembly 4. Because the first collecting pipe 1 and the barrel part 41 are both cylindrical, the side surface of the connecting piece 30 matched with the liquid storage assembly 4 is an inwards concave curved surface, and the side surface of the connecting piece 30 matched with the first collecting pipe 1 is also an inwards concave curved surface, so that the joint of the connecting piece 30 and the liquid storage assembly 4 is in surface-to-surface fit, the joint of the connecting piece 30 and the first collecting pipe 1 is also in surface-to-surface fit, the contact area of the joint is larger, and the connection is more firm. The connecting piece 30 with a simpler structure can realize the communication between the first cavity 413 and the first chamber 11 while realizing the fixed connection of the liquid storage assembly 4 to the first collecting pipe 1, so that the structure of the heat exchange assembly 100 is more compact, and the miniaturization of the system is facilitated. As shown in fig. 2, the connector 30 may be integrally formed with the barrel 41 of the reservoir assembly 4. In other embodiments, the connecting member 30 may be integrally formed with the first header 1, or the connecting member 30 may be separately formed and then connected to the tube 41 and the first header 1.

In order to further enhance the stability of the connection between the liquid storage assembly 4 and the first collecting pipe 1, a connection block 40 may be further disposed between the liquid storage assembly 4 and the first collecting pipe 1, one side surface of the connection block 40 is connected to the cylinder 41, and the other side surface is connected to the first collecting pipe 1. The structure of the connection block 40 is substantially the same as that of the connection member 30, and the connection block 40 is not provided with a communication chamber. The connecting block 40 and the connecting member 30 are arranged along the axial direction of the liquid storage assembly 4, wherein the connecting member 30 is disposed closer to the first end 411 than the connecting block 40, and the connecting block 40 is disposed closer to the second end 412 than the connecting member 30, so that a relatively stable connection relationship can be formed between the liquid storage assembly 4 and the first collecting pipe 1 through the connection of the two portions. The connecting piece 30 and the connecting block 40 which have simple structures and small volumes are used for realizing the connection and fixation between the liquid storage assembly 4 and the first collecting pipe 1, so that the structure of the heat exchange assembly 100 is compact, and the miniaturization of a system is facilitated.

The second end 412 of the cylinder 41 is fixedly connected with the three-way reversing valve 5, at least part of the second end 412 is accommodated in a valve seat of the three-way reversing valve 5, the cylinder 41 is sealed and connected with the three-way reversing valve 5 through brazing or a sealing ring, and the second cavity 414 of the cylinder 41 is communicated with an inner cavity of the three-way reversing valve 5. The three-way reversing valve 5 comprises a first hole 51, a second hole 52 and a third hole 53, the first hole 51, the second hole 52 and the third hole 53 can be communicated with an inner cavity of the three-way reversing valve 5, the second cavity 414 is communicated with the inner cavity of the three-way reversing valve 5 through the first hole 51, the second cavity 12 can be communicated with the inner cavity of the three-way reversing valve 5 through the second hole 52, and external system components can be communicated with the inner cavity of the three-way reversing valve 5 through the third hole 53. The three-way reversing valve 5 has a first working state in which the first hole 51 is communicated with the second hole 52, the third hole 53 is closed, and the second chamber 414 is communicated with the second chamber 12 through the three-way reversing valve 5; in the second operating condition, the first aperture 51 communicates with the third aperture 53, the second aperture 52 is closed and the second chamber 414 communicates with the external system components through the three-way reversing valve 5. Optionally, the three-way reversing valve 5 may be a three-way ball valve, and since the specific structure and the working principle of the three-way ball valve are well known to those skilled in the art, the detailed description of the three-way ball valve is omitted in this application.

The second cavity 414 of the cylinder 41 may further be provided with a dry filter 46, and the dry filter 46 is used for drying and filtering the refrigerant entering the second cavity 414, so as to remove moisture and impurities in the refrigerant, ensure the quality of the refrigerant, and improve the quality of the refrigerant cycle. The dry filter 46 may include a cavity and a dry particle structure filled in the cavity, a wall of the periphery of the cavity of the dry filter 46 may be provided with a through hole, and the through hole is covered with a mesh structure, the mesh structure may filter impurities of the refrigerant, and the dry particle structure may absorb moisture, and the specific structure and working principle of the dry filter 46 are well known to those skilled in the art, and will not be described herein in detail. In some other embodiments, the cartridge 41 may be self-contained with a dry filter element.

The first check member 42 is used for making the refrigerant flow in one direction in the cylinder 41, the first check member 42 includes a valve body 421 and a first valve core assembly 422, the first valve core assembly 422 is disposed in the valve body 421, and a wall surface of the valve body 421 on a side away from the first valve core assembly 422 is circumferentially sealed with an inner wall surface of the cylinder 41, so that the first cavity 413 and the second cavity 414 can only be communicated or not communicated through the inside of the first check member 42.

The first valve core assembly 422 includes a first closing portion 4221, a first elastic portion 4222 and a first base portion 4223, the first base portion 4223 is fixedly connected with the valve body 421, one end of the first elastic portion 4222 is connected to the first base portion 4223, and the other end of the first elastic portion 4222 is connected to the first closing portion 4221. One end of the first sealing portion 4221 away from the first base portion 4223 is matched with the inner wall surface of the valve body 421, and the end of the first sealing portion 4221 away from the first base portion 4223 is attached to or spaced from the inner wall surface of the valve body 421 by the change of the first elastic portion 4222. Optionally, a sealing ring is disposed at an end of the first closing portion 4221 away from the first base portion 4223, so as to enhance the sealing effect when the first closing portion 4221 is sealed with the valve body 421. One end of the first closing portion 4221 close to the first base portion 4223 is partially accommodated in the first base portion 4223, specifically, the first base portion 4223 has a through hole (not shown), one end of the first closing portion 4221 close to the first base portion 4223 has a rod portion (not shown), the rod portion is inserted into the through hole, the first closing portion 4221 is supported on the first base portion 4223 through the first elastic portion 4222, when the first closing portion 4221 moves up and down, the rod portion also moves up and down in the through hole, and no shield is arranged below the first base portion 4223 to provide a space for the movement of the first closing portion 4221. Alternatively, the cross-sectional profile of the stem portion is triangular, and the cross-sectional profile of the through-hole is also triangular, such that the cooperation of the two triangles reduces circumferential rotation of the first closure portion 4221.

Referring to fig. 5, 7 and 8, the first valve core assembly 422 further includes a clip member 423, and the clip member 423 is annular with a notch and has elasticity. When the first one-way element 42 is assembled, the first sealing portion 4221, the first elastic portion 4222 and the first base portion 4223 of the first valve core assembly 422 are sequentially assembled into corresponding positions in the valve body 421, then the clamping member 423 is placed under the first base portion 4223 in a compressed state, after the compression force is removed, the clamping member 423 is restored to a non-compressed state, so that the clamping member 423 and the valve body 421 are relatively fixed, and the first base portion 4223 is arranged on the clamping member 423, so that the first base portion 4223 is fixed to the valve body 421. Specifically, referring to fig. 8, a stepped groove portion (not labeled in the figure) is provided in the valve body 421, both the first base portion 4223 and the snap member 423 are partially accommodated in the groove portion, a part of the first base portion 4223 is placed on the snap member 423, after the first one-way element 42 is assembled, an outer contour line of a projection of the first base portion 4223 along the axial direction of the cylinder portion 41 falls into the projection of the snap member 423, and the position of the first base portion 4223 in the axial direction of the cylinder portion 41 is limited by the groove portion of the valve body 421 and the snap member 423. After the assembly is completed, one end of the first closing portion 4221 away from the first base portion 4223 abuts against the inner wall surface of the valve body 421 by the elastic force of the first elastic portion 4222.

The first unidirectional element 42 has an on state and an off state. When the refrigerant enters the first chamber 413 from the first chamber 11, the first check element 42 is in a conducting state, the first chamber 413 is communicated with the second chamber 414, specifically, the refrigerant impacts the first sealing portion 4221 from top to bottom, the first elastic portion 4222 is forced to be compressed, so that the first sealing portion 4221 is separated from the valve body 421, that is, the periphery of one end of the first sealing portion 4221 away from the first elastic portion 4222 is spaced from the inner side wall surface of the valve body 421, and the refrigerant enters the second chamber 414 through the gap between the first sealing portion 4221 and the valve body 421. When the refrigerant enters the cylinder 41 from the second chamber 414, the first check member 42 is in a blocking state, the first chamber 413 is not communicated with the second chamber 414, specifically, under the action of the elastic force of the first elastic part 4222, the periphery of one end of the first sealing part 4221 away from the first elastic part 4222 is abutted against the inner side wall surface of the valve body 421 to realize sealing, and the refrigerant cannot flow to the first chamber 413 through the first check member 42.

The second one-way element 43 functions to allow the refrigerant to flow in one direction from the outside of the heat exchange assembly 100 into the cylinder 41, and the second one-way element 43 is fixedly connected to the outside of the cylinder 41. The second one-way element 43 includes a main body portion 431, a second valve core assembly 432 and a cover assembly 433, the main body portion 431 is fixedly connected with the cylinder portion 41, the main body portion 431 includes a third cavity 4311, a fourth cavity 4312 and a mounting hole 4313, the second valve core assembly 432 is disposed in the mounting hole 4313, at least a portion of the cover assembly 433 is disposed in the mounting hole 4313, the third cavity 4311 is communicated with an external system element of the heat exchange assembly 100, the fourth cavity 4312 is communicated with the second cavity 414, and the second valve core assembly 432 controls the communication and non-communication of the third cavity 4311 and the fourth cavity 4312. Referring to fig. 6, the joint of the second unidirectional element 43 and the tube 41 is a surface-to-surface contact, that is, the joint of the second unidirectional element 43 and the tube 41 is a concave curved surface, so that the joint of the second unidirectional element 43 and the tube 41 is more secure.

The second spool assembly 432 includes a second sealing portion 4321, a second elastic portion 4322 and a second base portion 4323, the second base portion 4323 is fixedly connected to the sidewall of the main body portion 431, one end of the second elastic portion 4322 is connected to the second base portion 4323, and the other end is connected to the second sealing portion 4321. One end of the second closing portion 4321 away from the second base portion 4323 is engaged with the inner wall surface of the body portion 431, and the change of the second elastic portion 4322 causes the one end of the second closing portion 4321 away from the second base portion 4323 to be attached to or spaced apart from the inner wall surface of the body portion 431. Optionally, a sealing ring is disposed at an end of the second closing portion 4321 away from the second base portion 4323, so as to enhance the sealing effect when the second closing portion 4321 is sealed with the main body portion 431. The end of the second closing portion 4321 close to the second base portion 4323 is partially accommodated in the second base portion 4323, and the matching structure of the second closing portion 4321 and the second base portion 4323 is substantially the same as that of the first valve core assembly 422, and reference may be made to the description of the first closing portion 4221 and the first base portion 4223, and the description will not be repeated here.

Referring to fig. 5 and 6, along the length direction of the mounting hole 4313, the cover member 433 is farther away from the second closing portion 4321 than the second base portion 4323, and the cover member 433 blocks the opening formed on the body portion 431 of the mounting hole 4313 to seal one end of the mounting hole 4313. The closure assembly 433 is fixedly attached to the body portion 431 by one or more of gluing, brazing, and threading.

In order to facilitate the installation of the second valve core assembly 432, a fabrication hole with one end closed and the other end open is formed in the main body portion 431 of the second one-way element 43, the fabrication hole forms an installation hole 4313 in the main body portion 431, the second valve core assembly 432 and the cover assembly 433 are assembled through the installation hole 4313, and the cover assembly 433 is used for limiting the axial displacement of the second base portion 4323 while realizing the sealing of the installation hole 4313.

In order to communicate the external system components with the second chamber 414 and facilitate the butt joint between the components, two orifices are formed in the main body 431, one end of each orifice forms an opening on the main body 431 to facilitate the butt joint with other components, the other end of each orifice communicates with the mounting orifice 4313 to enable the communication and stopping of the two orifices to be controlled by the second valve core assembly 432, the extending direction of the two orifices is perpendicular to the axial direction of the cylinder 41, and the two orifices respectively form a third chamber 4311 and a fourth chamber 4312 in the main body 431. The extending direction of the duct is perpendicular to the axial direction of the cylinder 41, and the openings of the two ducts formed in the main body 431 are respectively located on the left and right sides of the main body 431 so as to be in butt joint with other components. Specifically, a through hole is formed in the side wall where the barrel portion 41 and the main body portion 431 are attached to each other, the second cavity 414 and the fourth cavity 4312 can be communicated through the through hole, the connection between the first one-way element 42 and other elements and pipelines of the system can be completed in an area with a large left space, the connection does not interfere with the heat exchange assembly 100, and smooth assembly of the system is facilitated. In the present embodiment, since the extending direction of the mounting port 4313 is parallel to the axial direction of the cylinder portion 41, the extending direction of both ports is perpendicular to the extending direction of the mounting port 4313, and the flow path is substantially in a zigzag shape when the refrigerant flows in the main body portion 431.

The cap assembly 433 is fixed to the body portion 431 and can limit the position of the second base portion 4323. Specifically, the main body 431 is provided with a stepped groove (not labeled) at a side thereof adjacent to the open end of the mounting hole 4313, and the cover member 433 and the second base 4323 are partially received in the stepped groove. The cover assembly 433 includes a first fitting portion 4331 and a second fitting portion 4332, and the second fitting portion 4332 is fixedly connected to the main body portion 431, so that the first fitting portion 4331 is fixed to the main body portion 431 in a limited manner. In some embodiments, the second fitting portion 4332 is provided with an external thread, the main body portion 431 is provided with an internal thread, and the second fitting portion 4332 is fixed to the main body portion 431 by the fitting of the threads, thereby fixing the first fitting portion 4331 to the main body portion 431. In some other embodiments, the second fitting portion 4332 may also be fixed to the main body portion 431 by soldering, or the second fitting portion 4332 may also be fixed to the main body portion 431 by gluing, or the second fitting portion 4332 may also be fixed to the main body portion 431 by interference fit.

The first matching portion 4331 includes an axial boss 4333 and a circumferential boss 4334, the axial boss 4333 is formed by protruding a part of the end face of the first matching portion 4331 in the axial direction, the circumferential boss 4334 is formed by protruding a part of the circumference of the first matching portion 4331, and the axial boss 4333 is located above the circumferential boss 4334 in the axial direction of the second one-way element 43. Part of end face of the axial boss 4333 is attached to the second base 4323, and part of end face is attached to the side wall face of the stepped groove portion of the main body 431, so that the positions of the second base 4323 and the main body 431 are relatively fixed after assembly is completed, and axial displacement of the second base 4323 is limited. Part of the end surface of the circumferential projection 4334 is attached to the side wall surface of the stepped groove portion of the main body portion 431, and a seal 434 may be provided between the circumferential projection 4334 and the main body portion 431, so that the sealing effect of the cap assembly 433 can be enhanced, and the displacement of the first fitting portion 4331 in the axial direction can be restricted. The end face of the axial boss 4333 facing the second valve core assembly 432 is provided with an escape part 4335, and the escape part 4335 is used for providing a space for the axial displacement of the second closing part 4321.

When the second one-way element 43 is assembled, the second closing portion 4321, the second elastic portion 4322 and the second base portion 4323 of the second spool assembly 432 are assembled into corresponding positions in the main body portion 431 in sequence, then the first matching portion 4331 and the sealing element 434 are assembled, the second base portion 4323 and the sealing element 434 are limited preliminarily, then the second matching portion 4332 is assembled, the second matching portion 4332 is fixed with the main body portion 431, and therefore the first matching portion 4331 is fixed with the main body portion 431, and sealing of the sealing cover assembly 433 and the main body portion 431 and axial limiting of the second base portion 4323 are achieved. After the assembly is completed, one end of the second closing portion 4321 away from the second base portion 4323 abuts against the inner wall surface of the body portion 431 by the elastic force of the second elastic portion 4322.

The second unidirectional element 43 has an on state and an off state. When refrigerant enters the heat exchange assembly 100 from the third chamber 4311, the second one-way element 43 is in a conducting state, the third chamber 4311 is communicated with the second chamber 414 through the fourth chamber 4312, specifically, in the second one-way element 43, the refrigerant impacts the second sealing portion 4321 from top to bottom, the second elastic portion 4322 is compressed by a force, so that the second sealing portion 4321 is separated from the main body portion 431, that is, the periphery of one end of the second sealing portion 4321 away from the second elastic portion 4322 is spaced from the inner side wall surface of the main body portion 431, and the refrigerant enters the fourth chamber 4312 through the gap between the second sealing portion 4321 and the main body portion 431 and then enters the second chamber 414. The refrigerant enters the cylinder portion 41 from the second chamber 414, the second one-way element 43 is in a cut-off state, the second chamber 414 is communicated with the fourth chamber 4312, but the third chamber 4311 is not communicated with the fourth chamber 4312, specifically, under the action of the elastic force of the second elastic portion 4322, the periphery of one end of the second sealing portion 4321 away from the second elastic portion 4322 is abutted against the inner side wall surface of the main body portion 431 to realize sealing, and the refrigerant cannot flow from the second chamber 414 to the outside of the heat exchange assembly 100 through the second one-way element 43.

Since the communication chamber 301 of the connecting member 30 is communicated with the first chamber 413, the fourth chamber 4312 of the second one-way element 43 is communicated with the second chamber 414, and the first chamber 413 and the second chamber 414 are respectively located at two opposite sides of the first one-way element 42, the second one-way element 43 and the connecting member 30 are respectively located at two opposite sides of the first one-way element 42 along the length direction of the liquid storage component 4.

In summary, the first one-way element 42 allows the refrigerant to flow only from the first chamber 413 to the second chamber 414 and not from the second chamber 414 to the first chamber 413, the second one-way element 43 allows the refrigerant to flow only from the third chamber 4311 to the fourth chamber 4312 and not from the fourth chamber 4312 to the third chamber 4311, the fourth chamber 4312 is communicated with the second chamber 414, and the third chamber 4311 is communicated with the outside of the heat exchange assembly 100, i.e. the second one-way element 43 allows the refrigerant to flow only from the outside of the heat exchange assembly 100 to the second chamber 414 through the second one-way element 43 and not from the second chamber 414 to the outside of the heat exchange assembly 100 through the second one-way element 43. When the heat exchange assembly 100 in the present application is applied to a system, in the liquid storage assembly 4, when the first unidirectional element 42 is turned on in the direction from the first cavity 413 to the second cavity 414, the direction from the second cavity 414 to the outside of the heat exchange assembly 100 is cut off by the second unidirectional element 43; when the second unidirectional element 43 is turned on in the direction from the outside of the heat exchange assembly 100 to the second chamber 414, the first unidirectional element 42 is turned off in the direction from the second chamber 414 to the first chamber 413, which can respectively correspond to different heat exchange modes in the system.

In some heat management systems, a liquid storage device is connected in series in a circulation loop of a heating mode, a liquid storage device is also connected in series in a circulation loop of a cooling mode, used for removing moisture and impurities in the refrigerant, ensuring the quality of the refrigerant, improving the quality of the refrigerant circulation, but the heating mode and the cooling mode can not be operated at the same time, therefore, the system can make the refrigerant of the flow path of the cooling mode and the refrigerant of the flow path of the heating mode respectively flow through the same liquid storage device when being designed, thereby saving the number of elements in the system and simplifying the system structure, but the phenomenon of refrigerant backflow may occur when the same liquid storage device is used in the heating mode and the cooling mode, if the backflow phenomenon occurs, part of the refrigerant is stored in the elements which do not participate in the heat exchange, so that the refrigerant flowing in the system is reduced, the operation of the system is disadvantageous, and at least two check valves are required to be used in the related art for avoiding the occurrence of the refrigerant backflow phenomenon. The liquid storage assembly 4 of the heat exchange assembly 100 in the application is integrated with the liquid storage device 102, the first one-way element 42 and the second one-way element 43, and can be used for reducing the possibility of occurrence of the refrigerant backflow situation, the first one-way element 42 is arranged in the cylinder portion 41, the second one-way element 43 is fixed outside the cylinder portion 41, in addition, the main body portion 431 of the second one-way element 43 can also be used as a connecting pressing plate, the heat exchange assembly 100 is in butt joint with a pipeline or an element, the saving of pipeline elements of a system is facilitated, the structure of the system can be more compact, and the miniaturization is facilitated.

Referring to fig. 10, the thermal management system includes a heat exchange assembly 100, a compressor 200, a three-way valve assembly 300, an indoor condenser 400, a first flow rate adjusting device 500, a second flow rate adjusting device 600, an indoor evaporator 700, and an outdoor evaporator 800. The heat exchange assembly 100 is integrally formed by an outdoor condenser 101, a first one-way element 42, a liquid reservoir 102, a three-way reversing valve 5, a supercooling condenser 103 and a second one-way element 43, wherein the first one-way element 42 and the second one-way element 43 are integrated in the liquid reservoir assembly 4, the second cavity 414 and the dry filter 46 of the liquid reservoir assembly 4 are used as the liquid reservoir 102, the first cavity 11 of the first collecting pipe 1, the third cavity 21 of the second collecting pipe 2 and the first pipe group 31 are used as the outdoor condenser 101, and the second cavity 12 of the first collecting pipe 1, the fourth cavity 22 of the second collecting pipe 2 and the second pipe group 32 are used as the supercooling condenser 103. The three-way valve assembly 300 controls the flow of the refrigerant flowing from the compressor 100 to the outdoor condenser 101 or to the indoor condenser 400 according to the system operating conditions. Alternatively, the three-way valve assembly 300 may be a three-way ball valve.

The heat management system comprises a heating mode and a cooling mode, in the cooling mode, a refrigerant flow path in the heat exchange assembly 100 flows in from the first pressing plate 10 of the second collecting pipe 2 and flows out from the second pressing plate 20 of the second collecting pipe 2 as shown by thick arrows in fig. 2, wherein the first pressing plate 10 is used for connecting the third chamber 21 and an external pipeline or component and communicating the third chamber 21 with the outside of the heat exchange assembly 100, and the second pressing plate 20 is used for connecting the fourth chamber 22 and an external pipeline or component and communicating the fourth chamber 22 with the outside of the heat exchange assembly 100; in the heating mode, the refrigerant flow path in the heat exchange assembly 100 is as shown by the thin arrows in fig. 2, flows in from the third chamber 4311 of the first one-way element 42, flows out from the third hole 53 of the three-way reversing valve 5, the first one-way element 42 is connected with the external pipe or member and communicates the third chamber 4311 with the outside of the heat exchange assembly 100, the three-way reversing valve 5 is connected with the external pipe or member and communicates the inner chamber of the three-way reversing valve 5 with the outside of the heat exchange assembly 100.

In the cooling mode, the three-way valve assembly 300 controls the refrigerant flowing out of the compressor 100 to flow to the outdoor condenser 101, the first flow regulating device 500 is in a throttling state, the second flow regulating device 600 is in a throttling or cut-off state, the first pressure plate 10 serves as an inlet of the refrigerant of the heat exchange assembly 100, the second pressure plate 20 serves as an outlet of the refrigerant of the heat exchange assembly 100, and the three-way reversing valve 5 is in a first working state, that is, the second chamber 414 is communicated with the second chamber 12 through the three-way reversing valve 5. Taking the second flow rate adjustment device 600 in the off state as an example, the compressor 200, the three-way valve assembly 300, the heat exchange assembly 100, the first flow rate adjustment device 500, and the indoor evaporator 700 in the thermal management system are sequentially communicated to form a refrigerant circuit.

Specifically, referring to fig. 11, the high-temperature and high-pressure refrigerant coming out of the compressor 200 enters the heat exchange assembly 100 from the first pressure plate 10, condenses and releases heat in the outdoor condenser 101 formed by the third chamber 21, the first tube group 31 and the first chamber 11, then flows into the first chamber 413 of the liquid storage assembly 4 through the communication chamber 301 of the connecting member 30, at this time, the first one-way element 42 is in a conduction state, the refrigerant flows into the second chamber 414 of the liquid storage assembly 4 through the first one-way element 42, flows through the drying filter 46 in the second chamber 414, passes through the reversing action of the three-way reversing valve 5, enters the supercooling condenser 103 formed by the second chamber 12, the second tube group 32 and the fourth chamber 22, further condenses and releases heat, then flows out of the heat exchange assembly 100 from the second pressure plate 20, throttles and drops pressure through the first flow regulating device 500, enters the indoor evaporator 700, exchanges heat with air in the indoor evaporator 700, absorbs the heat of the air to cool it, and finally returns to the compressor 200, and the process is repeated. In the cooling mode, the heat exchange assembly 100 functions as the outdoor condenser 101 and the subcooling condenser 103, and simultaneously performs the functions of drying, filtering and storing the refrigerant, after the refrigerant flows into the second cavity 414, since the second one-way element 43 is in the cut-off state, the refrigerant cannot flow out of the heat exchange assembly 100 from the second one-way element 43, so as to reduce the possibility of the refrigerant backflow phenomenon.

In some other embodiments, the refrigerant flowing out of the heat exchange assembly 100 may be divided into two paths, wherein one path is throttled and depressurized by the first flow rate adjusting device 500, enters the indoor evaporator 700, and then returns to the compressor 200; the other path is throttled and depressurized by the second flow rate adjusting device 600, enters the outdoor evaporator 800, exchanges heat with the air or the cooling liquid loop in the outdoor evaporator 800, absorbs heat of the air or the cooling liquid loop to cool the air or the cooling liquid loop, and finally returns to the compressor 200.

In the heating mode, the three-way valve assembly 300 controls the refrigerant flowing out of the compressor 100 to flow to the indoor condenser 400, the first flow rate adjusting device 500 is in a cut-off state, the second flow rate adjusting device 600 is in a throttling state, the first one-way element 42 serves as an inlet of the refrigerant of the heat exchange assembly 100, the three-way reversing valve 5 serves as an outlet of the refrigerant of the heat exchange assembly 100, and the three-way reversing valve 5 is in a second working state, that is, the second chamber 414 is communicated with other elements through the three-way reversing valve 5. In the thermal management system, the compressor 200, the three-way valve assembly 300, the indoor condenser 400, the heat exchange assembly 100, the second flow rate adjusting device 600, and the outdoor evaporator 800 are sequentially communicated to form a refrigerant circuit.

Specifically, referring to fig. 12, the high-temperature and high-pressure refrigerant coming out of the compressor 200 flows into the indoor condenser 400 to condense and release heat, thereby heating the air to achieve the purpose of heating, and then enters the heat exchange assembly 100 through the second one-way element 43, at this time, the second one-way element 43 is in a conducting state, the refrigerant flows into the second cavity 414 of the liquid storage assembly 4 through the second one-way element 43, flows through the drying filter 46 in the second cavity 414, passes through the reversing action of the three-way reversing valve 5, flows out of the heat exchange assembly 100 from the third hole 53 of the three-way reversing valve 5, throttles and reduces the pressure through the second flow regulator 600, enters the outdoor evaporator 800, exchanges heat with the air or cooling liquid loop in the outdoor evaporator 800, absorbs the heat of the air or cooling liquid loop to reduce the temperature, and finally returns to the compressor 200, and the cycle is repeated. In the heating mode, the first header 1, the second header 2 and the heat exchange tube 3 of the heat exchange assembly 100 do not participate in heat exchange, and only the second cavity 414 of the liquid storage assembly 4 performs functions of drying, filtering and storing the refrigerant, after the refrigerant flows into the second cavity 414, because the first one-way element 42 is in a cut-off state, the refrigerant cannot flow into the first cavity 413 from the first one-way element 42 and then enters the first header 1, so as to reduce the possibility of occurrence of a phenomenon of refrigerant backflow.

In some other embodiments, the refrigerant flowing out of the heat exchange assembly 100 may be divided into two paths, one path of the refrigerant enters the indoor evaporator 700 after being throttled and depressurized by the first flow rate adjusting device 500 and then returns to the compressor 200, the indoor evaporator 700 is disposed on the windward side of the indoor condenser 400, and the air is firstly reduced in humidity by the indoor evaporator 700, then heated by the indoor condenser 400 and blown into the passenger compartment, so as to achieve the purpose of heating and dehumidifying; the other path enters the outdoor evaporator 800 after being throttled and depressurized by the second flow regulating device 600, and then returns to the compressor 200, and the outdoor evaporator 800 can exchange heat with the cooling liquid loop to realize the cooling of the battery assembly or the motor assembly.

In the application, an outdoor condenser 101, a liquid storage device 102, a supercooling condenser 103, a first one-way element 42, a second one-way element 43 and a three-way reversing valve 5 are integrated to form a heat exchange assembly 100, the liquid storage device 102, the first one-way element 42 and the second one-way element 43 are integrated to form a liquid storage assembly 4, refrigerant can be dried, filtered and stored in the liquid storage assembly 4 during refrigeration and heating, and the refrigerant in a second cavity 414 flows in one way due to the first one-way element 42 and the second one-way element 43, so that the possibility of backflow is reduced, the pipeline connection among the outdoor condenser 101, the first one-way element 42, the liquid storage device 102, the second one-way element 43, the liquid storage device 102, the three-way reversing valve 5 and the supercooling condenser 103 is eliminated, the system structure is simplified, and the system is more compact, and the system is beneficial to miniaturization.

In some other embodiments, the three-way reversing valve 5 may not be integrated in the heat exchange assembly 100, the refrigerant is communicated with one three-way reversing valve 5 through a pipeline after coming out of the second chamber 414, the second chamber 414 is communicated with the first hole 51 through a pipeline, the second chamber 12 is communicated with the second hole 52 through a pipeline, the three-way reversing valve 5 may be integrated with other components or independently installed, and the third hole 53 may be communicated with other components through a pipeline or directly integrated with other components.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A heat exchange assembly, comprising: the heat exchanger comprises a first collecting pipe (1), a second collecting pipe (2), a heat exchange pipe (3) and a liquid storage assembly (4), wherein one end of the heat exchange pipe (3) is connected to the first collecting pipe (1), the other end of the heat exchange pipe is connected to the second collecting pipe (2), and the liquid storage assembly (4) is fixed to the first collecting pipe (1);

the liquid storage assembly (4) comprises a cylinder part (41), a first one-way element (42) and a second one-way element (43), the first one-way element (42) is fixed in the cylinder part (41), the first one-way element (42) is circumferentially sealed with part of the inner wall surface of the cylinder part (41), the first one-way element (42) comprises a valve body (421) and a first valve core assembly (422), the first valve core assembly (422) is arranged in the valve body (421), the wall surface of one side of the valve body (421), far away from the first valve core assembly (422), is circumferentially sealed with part of the inner wall surface of the cylinder part (41), the first valve core assembly (422) comprises a first sealing part (4221), the cylinder part (41) is provided with a first cavity (413) and a second cavity (414), and the first cavity (413) and the second cavity (414) are both located in the inner wall surface of the cylinder part (41), the first cavity (413) is communicated with an inner cavity of the first collecting pipe (1), the first one-way element (42) has a conducting state and a stopping state, and the first one-way element (42) controls the communication and the non-communication between the first cavity (413) and the second cavity (414);

the second one-way element (43) is fixedly connected to the outside of the cylinder part (41), the second one-way element (43) comprises a main body part (431) and a second valve core assembly (432), the main body part (431) comprises a mounting hole (4313), the second valve core assembly (432) is arranged in the mounting hole (4313), the second valve core assembly (432) comprises a second closing part (4321), the second one-way element (43) has a conducting state and a stopping state, and the second one-way element (43) controls the communication and the non-communication of the second cavity (414) and the outside of the heat exchange assembly (100) at the second one-way element (43);

the liquid storage assembly (4) has a first working state and a second working state, in the first working state of the liquid storage assembly (4), the first one-way element (42) is in a conducting state, the first sealing portion (4221) is spaced from the valve body (421), the first cavity (413) is communicated with the second cavity (414), the second one-way element (43) is in a stopping state, the second sealing portion (4321) is circumferentially sealed with the inner side wall of the main body portion (431), and the second cavity (414) is not communicated with the outside of the heat exchange assembly (100) at the second one-way element (43); in a second working state of the liquid storage assembly (4), the second one-way element (43) is in a conducting state, the second closing portion (4321) is spaced from the main body portion (431), the outside of the heat exchange assembly (100) is communicated with the second cavity (414) at the second one-way element (43), the first one-way element (42) is in a blocking state, the first closing portion (4221) is circumferentially sealed with the inner side wall of the valve body (421), and the second cavity (414) is not communicated with the first cavity (413).

2. A heat exchange assembly as claimed in claim 1, wherein;

the first valve core assembly (422) comprises a first elastic part (4222) and a first base part (4223), the first base part (4223) is fixedly connected with the valve body (421), one end of the first elastic part (4222) is connected to the first base part (4223), and the other end of the first elastic part is connected to the first closing part (4221);

in the on state of the first one-way element (42), the first elastic part (4222) is compressed, the periphery of one end of the first closing part (4221) far away from the first elastic part (4222) is spaced from the inner side wall surface of the valve body (421), the first cavity (413) is communicated with the second cavity (414), in the off state of the first one-way element (42), the periphery of one end of the first closing part (4221) far away from the first elastic part (4222) is sealed with the inner side wall surface of the valve body (421), and the first cavity (413) is not communicated with the second cavity (414).

3. A heat exchange assembly as claimed in claim 1, wherein the main body portion (431) comprises a third chamber (4311) and a fourth chamber (4312), the third chamber (4311) communicating with the exterior of the heat exchange assembly (100), the fourth chamber (4312) communicating with the second chamber (414);

the second valve spool assembly (432) comprises a second elastic part (4322) and a second base part (4323), the second base part (4323) is fixed with the side wall of the main body part (431), one end of the second elastic part (4322) is connected to the second base part (4323), and the other end of the second elastic part is connected to the second closing part (4321);

in the on state of the second unidirectional element (43), the second elastic part (4322) is compressed, the periphery of one end of the second closing part (4321) far away from the second elastic part (4322) is spaced from the inner side wall surface of the main body part (431), the third cavity (4311) is communicated with the fourth cavity (4312), in the off state of the second unidirectional element (43), the periphery of one end of the second closing part (4321) far away from the second elastic part (4322) is sealed with the inner side wall surface of the main body part (431), and the third cavity (4311) is not communicated with the fourth cavity (4312).

4. A heat exchange assembly according to claim 3, wherein the second unidirectional element (43) further comprises a cover assembly (433), the cover assembly (433) being at least partially disposed within the mounting hole (4313), the cover assembly (433) being further away from the second closing portion (4321) than the second base portion (4323) along the length direction of the mounting hole (4313), the cover assembly (433) closing off one end of the mounting hole (4313);

the cover assembly (433) is fixedly connected with the main body part (431) through one or more of gluing, brazing and thread matching.

5. A heat exchange assembly as claimed in claim 1, wherein the heat exchange assembly (100) comprises a connecting member (30), one side surface of the connecting member (30) is attached to the outer wall surface of the first header (1), the other side surface of the connecting member is attached to the outer wall surface of the cylinder (41), the connecting member (30) has a communicating cavity (301), and the communicating cavity (301) communicates the first cavity (413) with the inner cavity of the first header (1).

6. A heat exchange assembly according to claim 5, characterised in that the second unidirectional element (43) and the connector (30) are located on opposite sides of the first unidirectional element (42) in the length direction of the reservoir assembly (4).

7. A heat exchange assembly according to claim 1, wherein the heat exchange assembly (100) comprises a connecting member (30), the connecting member (30) is integrally formed with the cylinder (41) or the first header (1), the connecting member (30) has a communicating cavity (301), and the communicating cavity (301) communicates the first cavity (413) with an inner cavity of the first header (1).

8. A heat exchange assembly according to claim 1, wherein the heat exchange assembly (100) comprises a three-way reversing valve (5), a first partition (61) and a second partition (62), the inner cavity of the first collecting pipe (1) forms a first chamber (11) and a second chamber (12) through a first clapboard (61), the inner cavity of the second collecting pipe (2) forms a third chamber (21) and a fourth chamber (22) through a second partition plate (62), the heat exchange tubes (3) are multiple, the multiple heat exchange tubes (3) comprise a first tube group (31) and a second tube group (32), the first tube group (31) communicating the first chamber (11) and the third chamber (21), said second group of tubes (32) communicating said second chamber (12) and said fourth chamber (22), said first chamber (413) communicating with said first chamber (11);

the three-way reversing valve (5) is fixedly connected to the outer side of the first collecting pipe (1), and the liquid storage assembly (4) and the three-way reversing valve (5) are arranged along the length direction of the first collecting pipe (1);

the three-way reversing valve (5) comprises a first hole (51), a second hole (52) and a third hole (53), the second cavity (414) is communicated with the inner cavity of the three-way reversing valve (5) through the first hole (51), the second cavity (12) is communicated with the inner cavity of the three-way reversing valve (5) through the second hole (52), and the third hole (53) is communicated with the inner cavity of the three-way reversing valve (5) and the outside of the three-way reversing valve (5);

the three-way reversing valve (5) has a first working state and a second working state, in the first working state of the three-way reversing valve (5), the first hole (51) is communicated with the second hole (52), the third hole (53) is closed, and the second cavity (414) is communicated with the second cavity (12) through an inner cavity of the three-way reversing valve (5); in a second working state of the three-way reversing valve (5), the first hole (51) is communicated with the third hole (53), the second hole (52) is closed, and the second cavity (414) is communicated with the outside of the three-way reversing valve (5) through the three-way reversing valve (5).

9. A heat exchange assembly according to claim 1, wherein a step portion (415) is provided on an inner side of the cylinder portion (41) of the liquid storage assembly (4), the step portion (415) is formed by protruding a part of an inner side of the cylinder portion (41) facing the inner cavity direction of the cylinder portion (41), and a part of an end surface of the first one-way element (42) facing the second cavity (414) is abutted to an end surface of the step portion (415);

the liquid storage assembly (4) further comprises a blocking cover (44) and at least two supporting pieces (45), the blocking cover (44) blocks one end of the cylinder portion (41), the at least two supporting pieces (45) are arranged along the circumferential direction of the first one-way element (42), at least part of the supporting pieces (45) are located in the first cavity (413), one end of each supporting piece (45) is matched with the first one-way element (42), and the other end of each supporting piece (45) is matched with the blocking cover (44).

10. The heat management system is characterized by comprising a heat exchange assembly (100), wherein the heat exchange assembly (100) comprises a first collecting pipe (1), a second collecting pipe (2), a heat exchange pipe (3) and a liquid storage assembly (4), one end of the heat exchange pipe (3) is connected to the first collecting pipe (1), the other end of the heat exchange pipe is connected to the second collecting pipe (2), and the liquid storage assembly (4) is fixed to the first collecting pipe (1);

the liquid storage assembly (4) comprises a cylinder part (41), a first one-way element (42) and a second one-way element (43), the first one-way element (42) is fixed in the cylinder part (41), the first one-way element (42) is circumferentially sealed with part of the inner wall surface of the cylinder part (41), the cylinder part (41) is provided with a first cavity (413) and a second cavity (414), the first cavity (413) and the second cavity (414) are both located in the inner wall surface of the cylinder part (41), the first cavity (413) is communicated with the inner cavity of the first collecting pipe (1), the first one-way element (42) has a conducting state and a stopping state, and the first one-way element (42) controls the communication and the non-communication of the first cavity (413) and the second cavity (414);

the second one-way element (43) is fixedly connected to the outside of the cylinder part (41), the second one-way element (43) has a conducting state and a stopping state, and the second one-way element (43) controls the communication and the non-communication between the second cavity (414) and the outside of the heat exchange assembly (100) at the second one-way element (43);

the heat management system comprises a cooling mode and a heating mode, wherein in the cooling mode, the first unidirectional element (42) is in a conducting state, the first cavity (413) is communicated with the second cavity (414), the second unidirectional element (43) is in a stopping state, and the second cavity (414) is not communicated with the outside of the heat exchange assembly (100) at the second unidirectional element (43); in the heating mode, the second unidirectional element (43) is in a conducting state, the outside of the heat exchange assembly (100) is communicated with the second cavity (414) at the second unidirectional element (43), the first unidirectional element (42) is in a stopping state, and the second cavity (414) is not communicated with the first cavity (413).