Valve assembly and thermal management system

Abstract

The utility model provides a valve assembly and a thermal management system. The valve assembly comprises a valve body and a valve element. The valve body comprises a shell and a plurality of connecting openings formed in the shell. The valve element is movably assembled in the valve body. The valve element and the valve body are in sealed connection and form a communicating cavity and a balancing cavity which are isolated from each other. A plurality of communicating grooves are formed in the peripheral side of the valve element, the valve body rotates around the center of the valve body in the valve body, the communicating grooves are communicated with the at least two connecting ports to form communicating cavities, the valve element is provided with at least one through balance hole, and the balance cavity and the communicating cavities are communicated through the at least one balance hole. The balance hole is formed in the valve element and used for communicating the balance cavity with the communication cavity, so that a fluid medium enters the balance cavity through the balance hole after entering the communication cavity, the pressure of the valve element on one side of the communication cavity is reduced, sealing failure or abrasion between the valve element and the valve body is prevented, the sealing effect of the valve assembly is improved, and the service life of the valve assembly is prolonged; the maintenance cost of the system is reduced, and normal operation of the system is ensured.

Description

Technical Field

[0001] The present application relates to the field of thermal management, and in particular to a valve assembly and a thermal management system. Background Art

[0002] In thermal management systems, valves play a very important role. Valves mainly have the functions of fluid distribution and flow rate control. Valves can distribute fluids to different pipes or equipment, thereby achieving reasonable distribution and recycling of fluids in thermal management systems.

[0003] In the related art, when the valve is in use, the pressure of the fluid medium may cause problems such as wear of the sealing components or seal failure, which affects the service life of the valve. As a result, the valve needs to be repaired or replaced frequently in the system, which increases the maintenance cost of the thermal management system and affects the normal operation of the system. Utility Model Content

[0004] The present application provides a valve assembly and a thermal management system that ensure a sealing effect, extend the service life, and guarantee the normal operation of the system.

[0005] The present application provides a valve assembly, comprising:

[0006] A valve body, comprising a housing and a plurality of connection ports arranged on the housing;

[0007] A valve core is movably assembled in the valve body; the valve core is sealed and connected to the valve body to form a connecting cavity and a balancing cavity isolated from each other; a plurality of connecting grooves are arranged on the circumference of the valve core, and the valve body rotates around the central axis of the valve body in the valve body so that the connecting grooves are connected with at least two of the connecting ports to form the connecting cavity, and the valve core is provided with at least one balancing hole that passes through the balancing cavity and the connecting cavity.

[0008] Optionally, the valve core includes a first end face and a second end face that are arranged opposite to each other, and one of the balancing holes is arranged in the valve core within a projection area of ​​the connecting cavity projected onto at least one of the first end face and the second end face.

[0009] Optionally, the balancing chamber comprises a first balancing chamber arranged at the circumference of the valve core and a second balancing chamber arranged at the center of the valve core, and the first balancing chamber is connected to the second balancing chamber;

[0010] The communicating groove comprises a first side wall extending along the central axis of the valve body, wherein one of the balancing holes is provided on the first side wall and connects the first balancing chamber with the communicating chamber; or

[0011] The communicating groove comprises a second side wall extending along the central axis of the valve body, wherein one of the balancing holes is disposed on the second side wall and communicates with the second balancing chamber.

[0012] Optionally, the valve core includes a movable plug, and the movable plug is movably connected in the axial direction of the balancing hole to close or open the balancing hole.

[0013] Optionally, the valve core includes a movable plug; the number of the balancing holes is set to be multiple;

[0014] The movable plug is not disposed in one of the balancing holes communicating with the communicating cavity, and the movable plugs are disposed in the remaining balancing holes, and the movable plugs seal the balancing holes; or

[0015] The movable plugs are arranged in a plurality of the balancing holes, wherein the movable plug arranged in one of the balancing holes communicating with the communicating cavity is in an open state, and the movable plugs arranged in the remaining balancing holes are in a closed state.

[0016] Optionally, a transfer groove is provided on the circumferential side of the valve core, and the transfer groove is provided with a first through hole communicating with the connecting cavity and a second through hole communicating with the balancing cavity, and the connecting cavity is connected with the balancing cavity through the first through hole and the second through hole.

[0017] Optionally, among the multiple connection ports, at least some of the connection ports are distributed in the axial direction of the side wall of the shell; the connecting groove includes an axial groove, which extends in the axial direction of the side wall of the valve core, and when the valve core rotates around the central axis of the valve body in the valve body, at least two of the axially distributed connection ports are connected to the axial groove.

[0018] Optionally, among the multiple connection ports, at least some of the connection ports are distributed in the circumferential direction of the side wall of the shell; the connecting groove includes a circumferential groove, which extends in the circumferential direction of the side wall of the valve core, and when the valve core rotates around the central axis of the valve body in the valve body, at least two of the circumferentially distributed connection ports are connected to the circumferential groove.

[0019] Optionally, the valve assembly includes a first sealing assembly, the first sealing assembly includes a first sealing member and a bracket, and the first sealing member is assembled to the inner wall of the valve body through the bracket.

[0020] Optionally, a limit member is protruding from the interior of the valve body on one side facing the valve core, the limit member is sleeved on the center portion of the valve core facing the valve body, and the limit member includes a fixed portion and a plurality of raised portions, and the plurality of raised portions extend from the fixed portion toward the direction of the center axis of the valve body.

[0021] Optionally, the size of the balancing hole ranges from 0.5 to 8 mm.

[0022] Optionally, the valve assembly further comprises a valve cover, wherein the valve cover is assembled to an end portion of the valve body, and the valve core extends through a central hole of the valve cover toward a central portion of one end of the valve cover.

[0023] Optionally, the valve assembly includes a second sealing member, wherein the second sealing member is located between the central portion of one end of the valve core facing the valve cover and the central hole of the valve cover.

[0024] Optionally, a plurality of reinforcing ribs are provided on one end of the valve cover facing the valve core.

[0025] Optionally, a plurality of reinforcing ribs are provided on one end of the valve core facing the valve cover.

[0026] The present application also provides a thermal management system, comprising a plurality of pipelines and a valve assembly as described in any one of the aforementioned items, wherein the plurality of pipelines are connected to a plurality of connection ports of the valve assembly.

[0027] Optionally, the thermal management system includes a driving member, the valve assembly includes a valve core and a valve cover, one end of the valve core includes a central portion extending through a central hole of the valve cover, and the driving member is assembled with the central portion to drive the valve core to rotate.

[0028] The valve assembly and thermal management system provided by the present application are characterized in that the valve assembly is provided with at least one balancing hole passing through the valve core, and the at least one balancing hole connects the balancing chamber and the connecting chamber, so that after the fluid medium enters the connecting chamber, it can enter the balancing chamber through the balancing hole, thereby reducing the pressure of the fluid medium on the valve core on one side of the connecting chamber, preventing failure or wear of the seal between the valve core and the valve body, improving the sealing effect of the valve assembly, extending the service life of the valve assembly, reducing the maintenance cost of the system, and ensuring the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] Figure 1 Shown is a schematic structural diagram of an embodiment of a valve assembly of the present application.

[0031] Figure 2 Shown is an exploded view of yet another embodiment of the valve assembly of the present application.

[0032] Figure 3 Shown is a schematic structural diagram of an embodiment of a valve core of a valve assembly of the present application.

[0033] Figure 4 Shown is a structural schematic diagram of another embodiment of a valve core of a valve assembly of the present application.

[0034] Figure 5 Shown is a schematic structural diagram of another embodiment of a valve core of a valve assembly of the present application.

[0035] Figure 6 Shown is a structural schematic diagram of another embodiment of a valve core of a valve assembly of the present application.

[0036] Figure 7 Shown is a schematic structural diagram of an embodiment of a valve body of a valve assembly of the present application.

[0037] Description of reference numerals:

[0038] Valve assembly 100; drive member 200; valve body 1; housing 11; connecting port 12; valve core 2; connecting groove 21; axial groove 211; circumferential groove 212; transition groove 213; balancing hole 22; first through hole 221; second through hole 222; center portion 23; movable plug 24; first side wall 25; second side wall 26; connecting chamber 3; balancing chamber 4; first balancing chamber 41; second balancing chamber 42; first sealing assembly 5; first sealing member 51; bracket 52; valve cover 6; reinforcing rib 7; second sealing member 8; limit member 9; fixing portion 91; raised portion 92. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0040] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "one" or "one" and the like used in this application specification and claims do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in this application specification and the attached claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0041] The present application provides a valve assembly and a thermal management system. The valve assembly includes a valve body and a valve core. The valve body includes an outer shell and a plurality of connection ports provided on the outer shell. The valve core is movably assembled in the valve body. The valve core is sealed and connected to the valve body to form a mutually isolated connecting chamber and a balancing chamber. A plurality of connecting grooves are provided on the circumferential side of the valve core. The valve body rotates around the center of the valve body in the valve body so that the connecting grooves are connected to at least two connection ports to form a connecting chamber. The valve core is provided with at least one through-hole balancing hole, and at least one balancing hole connects the balancing chamber and the connecting chamber. In this way, the valve core is provided with at least one through-hole balancing hole, and at least one balancing hole connects the balancing chamber and the connecting chamber, so that after the fluid medium enters the connecting chamber, it can enter the balancing chamber through the balancing hole, thereby reducing the pressure of the fluid medium on the valve core on one side of the connecting chamber, preventing the seal failure or wear between the valve core and the valve body, improving the sealing effect of the valve assembly, extending the service life of the valve assembly, reducing the maintenance cost of the system, and ensuring the normal operation of the system.

[0042] The present application provides a valve assembly and a thermal management system. The valve assembly and the thermal management system of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0043] Figure 1 FIG. 1 is a schematic structural diagram of an embodiment of a valve assembly 100 of the present application. Figure 2 FIG. 1 is an exploded view of another embodiment of the valve assembly 100 of the present application. Figure 1 and Figure 2In the illustrated embodiment, the thermal management system includes a plurality of pipelines and a valve assembly 100. The plurality of pipelines are used to connect other components of the thermal management system and the valve assembly 100. In the present embodiment, the valve assembly 100 may be a water valve, a multi-way valve, etc. The valve assembly 100 includes a valve body 1 and a valve core 2. The valve body 1 includes a housing 11 and a plurality of connection ports 12 provided on the housing 11. The valve core 2 is movably assembled in the valve body 1. In the present embodiment, the valve core 2 is provided in the valve body 1 and rotates relative to the valve body 1. The valve core 2 is sealedly connected to the valve body 1 and forms a mutually isolated connecting chamber 3 and a balancing chamber 4. A plurality of connecting grooves 21 are provided on the circumferential side of the valve core 2. The valve body 1 rotates around the central axis of the valve body 1 in the valve body 1 so that the connecting grooves 21 are connected with at least two connection ports 12 to form a connecting chamber 3. The valve core 2 is provided with at least one through-hole balancing hole 22, and at least one balancing hole 22 connects the balancing chamber 4 with the connecting chamber 3. In this embodiment, at least one balancing hole 22 passes through the upper and lower ends of the valve core 2. In this configuration, at least one balancing hole 22 is provided through the valve core 2, and at least one balancing hole 22 connects the balancing chamber 4 and the connecting chamber 3, so that after the fluid medium enters the connecting chamber 3, it can enter the balancing chamber 4 through the balancing hole 22, thereby reducing the pressure of the fluid medium on the valve core 2 on one side of the connecting chamber 3, preventing the seal between the valve core 2 and the valve body 1 from failing or wearing, improving the sealing effect of the valve assembly 100, extending the service life of the valve assembly 100, reducing the maintenance cost of the system, and ensuring the normal operation of the system.

[0044] exist Figure 1 In the illustrated embodiment, the number of the balancing holes 22 is set to be multiple, and the multiple balancing holes 22 are evenly distributed. In this way, the balancing holes 22 can be more convenient to balance the pressure when rotating. In this embodiment, three balancing holes 22 are provided, and four, five, etc. can also be provided, and the number is not limited thereto. The size range of the balancing hole 22 is 0.5-8mm. In some embodiments, the size of the balancing hole 22 can be 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm or 8mm, etc. In this way, while ensuring that the balancing hole 22 can release pressure, it will not affect the flow of the fluid medium between the connecting groove 21 and the connecting port 12. The valve assembly 100 includes a first sealing assembly 5, and the first sealing assembly 5 includes a first sealing member 51 and a bracket 52. The first sealing member 51 is assembled to the inner side wall of the valve body 1 through the bracket 52. The bracket 52 is provided to facilitate the assembly of the first sealing member 51 to the inner side wall of the valve body 1 and improve the sealing of the system. In this embodiment, the first sealing member 51 is disposed between the outer wall of the valve core 2 and the inner wall of the valve body 1, and is disposed at a position corresponding to the connection port 12 of the valve body 1, so as to improve the sealing performance between the connection port 12 and the connecting groove 21. When the balancing hole 22 is provided, the gap between the first sealing component 5 and the valve core 2 is increased to prevent the sealing failure after the water flow generates pressure on the connecting groove 21 of the valve core 2.

[0045] exist Figure 2 In the illustrated embodiment, the thermal management system includes a driver 200. The driver 200 may be an actuator, which can realize the opening, closing or adjustment of the valve assembly 100 by electric, pneumatic, hydraulic or other means. The valve assembly 100 includes a valve core 2 and a valve cover 6. The valve core 2 is used to be assembled with the driver 200, and the valve cover 6 is used to protect the valve core 2. The valve core 2 includes a central portion 23 extending from both ends of the valve core 2, respectively, and the valve cover 6 is assembled at the end of the valve body 1. The central portion 23 of the valve core 2 facing the valve cover 6 passes through the central hole of the valve cover 6. Such a configuration facilitates the assembly of the central portion 23 with other components. The driver 200 is assembled with the central portion 23 to drive the valve core 2 to rotate. The driver 200 is used to facilitate the rotation of the valve core 2. A plurality of reinforcing ribs 7 are provided at one end of the valve cover 6 facing the valve core 2. Such a configuration can effectively increase the structural strength of the valve cover 6 facing the valve core 2, so that it can withstand greater internal pressure and resist deformation, thereby improving the stability of the valve assembly 100 and enhancing wear resistance. In this embodiment, the reinforcing ribs 7 are integrally formed with the valve cover 6. A plurality of reinforcing ribs 7 are provided at one end of the valve core 2 facing the valve cover 6. Such a configuration can effectively increase the structural strength of the end of the valve core 2 facing the valve cover 6, so that it can withstand greater internal pressure and resist deformation, thereby improving the stability of the valve assembly 100 and enhancing wear resistance. The valve assembly 100 includes a second sealing member 8, which is located between the central portion 23 of the end of the valve core 2 facing the valve cover 6 and the central hole of the valve cover 6. In this embodiment, the second sealing member 8 can be a sealing ring. The second sealing member 8 is sleeved on the central portion 23 of the valve core 2 and is used to seal the valve core 2 and the valve cover 6 to improve the sealing performance. When the fluid medium enters the connecting chamber 3 of the valve body 1 assembly through the connecting port 12, the setting of the balancing hole 22 allows the fluid medium to enter the balancing chamber 4, which can reduce the pressure on the connecting chamber 3, thereby preventing the second sealing member 8 from being worn.

[0046] Figure 3 FIG. 1 is a schematic structural diagram of a valve core 2 of a valve assembly 100 of the present application. Figure 1 and Figure 3In the illustrated embodiment, the valve core 2 includes a first end face and a second end face that are arranged opposite to each other. The first end face may be the end face of the valve core 2 facing the valve body 1, and the second end face may be the end face of the valve core 2 facing the valve cover 6. In some embodiments, one of the balancing holes 22 is arranged in the projection area of ​​the valve core 2 located in the connecting cavity 3 projected onto at least one of the first end face and the second end face. In some embodiments, the remaining balancing holes 22 are arranged outside the projection area. In this embodiment, a total of three balancing holes 22 are arranged, and other numbers of balancing holes 22 may also be arranged, without limitation thereto. Among them, only one balancing hole 22 is arranged in the projection area of ​​the connecting cavity 3 projected onto the first end face or the second end face, that is, the other two balancing holes 22 are arranged outside the projection area. In some embodiments, the balancing hole 22 may be arranged in the end face area of ​​the connecting groove 21 where the connecting cavity 3 is located. In some embodiments, at least one of the first end face and the second end face is provided with a balancing hole 22. In this embodiment, the balancing hole 22 is arranged on the end face of the valve core 2 facing the valve cover 6. In some other embodiments, the balancing hole 22 is arranged on the end face of the valve core 2 facing the valve body 1. One of the balancing holes 22 is arranged in the end surface area corresponding to the connecting cavity 3 formed by the valve core 2, and the other balancing holes 22 are arranged outside the end surface area. In this way, when the valve core 2 rotates, at least two connecting grooves 21 are connected, and only one balancing hole 22 is arranged in the projection area of ​​the connecting cavity 3 projected onto the first end surface or the second end surface, so that the fluid medium flowing out of one of the connecting grooves 21 and the balancing hole 22 will not flow into other connecting grooves 21.

[0047] exist Figure 1 and Figure 3In the illustrated embodiment, the valve core 2 includes a movable plug 24, which is movably connected in the axial direction of the balancing hole 22 to close or open the balancing hole 22. The movable plug 24 can be a one-way plug, a one-way valve, and an umbrella valve. When the fluid medium does not enter the connecting groove 21, the movable plug 24 is inserted into the balancing hole 22 to close the balancing hole 22; when the fluid medium passes through the connecting groove 21, the connecting groove 21 is subjected to pressure, so that the movable plug 24 is subjected to pressure, thereby moving in the axial direction of the balancing hole 22, opening the balancing hole 22, and the fluid medium flows out of the balancing hole 22. In some embodiments, the movable plug 24 is not provided in one of the balancing holes 22 connected to the connecting chamber 3, and the movable plug 24 is provided in the other balancing holes 22, and the movable plug 24 closes the balancing hole 22. Such a setting ensures that one of the balancing holes 22 can continue to flow, and the other balancing holes 22 are provided with the movable plug 24 and continue to be closed. While ensuring the connection, crossflow is prevented. Active plugs 24 are arranged in multiple balancing holes 22, wherein the active plug 24 arranged in one of the balancing holes 22 communicating with the connecting cavity 3 is in an open state, and the active plugs 24 arranged in the remaining balancing holes 22 are in a closed state. In this embodiment, when the active plug 24 is arranged on the balancing hole 22, at least one balancing hole 22 can also be arranged in the projection area of ​​the connecting cavity 3 projected onto at least one of the first end face and the second end face of the valve core 2. In this arrangement, after the fluid medium enters the connecting cavity 3, in at least one balancing hole 22 of the connecting cavity 3, the active plug 24 sealed on the balancing hole 22 subjected to the maximum pressure moves in the axial direction of the balancing hole 22, the balancing hole 22 subjected to the maximum pressure is opened, and the remaining balancing holes 22 continue to be sealed. By setting the active plug 24, the fluid medium flowing out of the balancing hole 22 only flows into the balancing cavity 4 through the balancing hole 22 subjected to the maximum pressure, and does not flow out through the remaining balancing holes 22, which can effectively prevent the fluid medium from flowing into other connecting grooves 21.

[0048] Figure 4 FIG. 1 is a schematic structural diagram of another embodiment of the valve core 2 of the valve assembly 100 of the present application. Figure 1 and Figure 4In the illustrated embodiment, the balancing chamber 4 includes a first balancing chamber 41 disposed on the peripheral side of the valve core 2 and a second balancing chamber 42 disposed at the center of the valve core 2. The first balancing chamber 41 and the second balancing chamber 42 are in communication. In the present embodiment, the first balancing chamber 41 and the second balancing chamber 42 are part of the balancing chamber 4. The connecting groove 21 includes a first side wall 25 extending along the central axis of the valve body 1, wherein a balancing hole 22 is disposed on the first side wall 25 and connects the first balancing chamber 41 with the connecting chamber 3. In the present embodiment, the first side wall 25 is a side wall of the connecting groove 21 that is closer to the valve body 1 relative to the center of the valve core 2. With such an arrangement, when the valve core 2 rotates to the side of the connecting groove 21 that is closer to the balancing chamber 4, a balancing hole 22 is provided on the first side wall 25 of the connecting groove 21, so that the connecting groove 21 is directly connected to the first balancing chamber 41 located on the peripheral side of the valve core 2.

[0049] Figure 5 FIG. 1 is a schematic structural diagram of another embodiment of the valve core 2 of the valve assembly 100 of the present application. Figures 1 to 5 In the illustrated embodiment, in this embodiment, the second side wall 26 includes two. The connecting groove 21 includes a second side wall 26 extending along the central axis of the valve body 1. One of the balancing holes 22 is provided on the second side wall 26 and communicates with the second balancing chamber 42. In this embodiment, the second side wall 26 is a side wall of the connecting groove 21 close to the central axis of the valve body 1 or the valve core 2, and the side wall directly leads to the second balancing chamber 42 at the center of the valve core 2. In some embodiments, in the area where the connecting chamber 3 is located, only one balancing hole 22 is provided to connect the connecting chamber 3 and the balancing chamber 4, and the balancing hole 22 can be provided on the first side wall 25, or can be provided on the second side wall 26. In this way, crossflow between the two balancing holes 22 in the area where the connecting chamber 3 is located is prevented. In some embodiments, when a plurality of balancing holes 22 are provided in the area where the connecting chamber 3 is located to connect the connecting chamber 3 and the balancing chamber 4, the balancing holes 22 can be provided in at least one of the first side wall 25, the second side wall 26, the projection area of ​​the first end face where the connecting chamber 3 is located, and the projection area of ​​the second end face where the connecting chamber 3 is located, then a movable plug can be used in the area of ​​the connecting chamber 3 to prevent crossflow.

[0050] exist Figure 1 and Figure 5In the embodiment shown, one of the balancing holes 22 is provided on the second side wall 26 and communicates with the second balancing chamber 42. In this embodiment, the cavity in the central portion 23 on the side of the end of the valve core 2 facing the valve body 1 is the second balancing chamber 42. The fluid medium can flow from the balancing hole 22 of the second side wall 26 of the connecting groove 21 to the area of ​​the second balancing chamber 42 of the central portion 23. In some embodiments, there is a gap between the end of the central portion 23 on the side of the valve core 2 facing the valve body 1 and the valve body 1, that is, the second balancing chamber 42 is a part of the balancing chamber 4. The fluid medium can flow from the connecting chamber 3 through the balancing hole 22 to the area of ​​the second balancing chamber 42 of the central portion 23, and can also flow through the gap between the end of the central portion 23 and the valve body 1 to other areas of the balancing chamber 4. In some other embodiments, the fluid medium can also flow to other areas of the balancing chamber 4 through the small holes opened in the side wall of the central portion 23.

[0051] Look back Figure 2In the illustrated embodiment, when the connecting groove 21 of the valve core 2 rotates, different connection ports 12 can be connected. Multiple pipelines connect multiple connection ports 12 of the valve assembly 100. In this embodiment, one pipeline is connected to one connection port 12. When the thermal management system is in use, at least two pipelines are required, and the two pipelines are respectively connected to two connection ports 12, one pipeline flows into the fluid medium, and the other pipeline flows out the fluid medium, so that one connection port 12 is an inlet and the other connection port 12 is an outlet. Among the multiple connection ports 12, at least part of the connection ports 12 are distributed in the axial direction of the side wall of the shell 11. The connecting groove 21 includes an axial groove 211, which extends in the axial direction of the side wall of the valve core 2. When the valve core 2 rotates around the central axis of the valve body 1 in the valve body 1, at least two axially distributed connection ports 12 are connected to the axial groove 211. In this way, the two axially distributed connection ports 12 can be connected through the axial groove 211, and the layout is reasonable, saving the axial space of the valve assembly 100. In this embodiment, more than one axial groove 211 may be provided. One axial groove 211 may also be connected to three, four, or other axial connection ports 12, and the number is not limited thereto. Among the multiple connection ports 12, at least part of the connection ports 12 are distributed in the circumferential direction of the side wall of the housing 11. The connecting groove 21 includes a circumferential groove 212, which extends in the circumferential direction of the side wall of the valve core 2. When the valve core 2 rotates around the central axis of the valve body 1 in the valve body 1, at least two circumferentially distributed connection ports 12 are connected to the circumferential groove 212. In this way, the two circumferentially distributed connection ports 12 can be connected through the circumferential groove 212, which is reasonably arranged and saves space in the circumferential direction of the valve assembly 100. In this embodiment, more than one circumferential groove 212 may be provided. One circumferential groove 212 may also be connected to three, four, or other circumferential connection ports 12, and the number is not limited thereto. In this embodiment, the valve assembly 100 further includes at least one adapter groove 213, and the adapter groove 213 corresponds to one connection port 12. When the valve core 2 rotates in the valve body 1, one connection port 12 is connected to the adapter groove 213. This arrangement reduces the weight of the valve core 2, and the adapter grooves 213 are distributed in the axial direction and circumferential direction of the valve core 2, thereby increasing the balance of the valve core 2 when rotating.

[0052] Figure 6 FIG. 1 is a schematic structural diagram of another embodiment of the valve core 2 of the valve assembly 100 of the present application. Figure 1 and Figure 6In the illustrated embodiment, the connecting chamber 3 is connected to the balancing chamber 4 through the balancing hole 22, and various situations can be set. A transfer groove 213 is provided on the circumferential side of the valve core 2. The transfer groove 213 does not allow the fluid medium to pass through the connecting port 12, and is used to transfer the fluid medium in the connecting groove 21. The transfer groove 213 is provided with a first through hole 221 connected to the connecting chamber 3 and a second through hole 222 connected to the balancing chamber 4. The connecting chamber 3 is connected to the balancing chamber 4 through the first through hole 221 and the second through hole 222. In some embodiments, when the connecting groove 21 (for example, the axial groove 211 or the circumferential groove 212) provided on the side wall of the valve core 2 is close to the end of the valve core 2, the fluid medium enters the connecting groove 21 and then enters the balancing chamber 4 through the balancing hole 22. When the communication groove 21 is arranged on the side wall of the valve core 2, and a transfer groove 213 is arranged between the communication groove 21 and the end of the valve core 2, a first through hole 221 is opened between the communication groove 21 and the transfer groove 213, so that after the fluid medium enters the communication groove 21, it enters the transfer groove 213 through the first through hole 221, and then communicates with the balance chamber 4 through the second through hole 222 opened in the transfer groove 213. In some other embodiments, when the communication groove 21 arranged on the side wall of the valve core 2 is close to the end of the valve core 2, or when the communication groove 21 is arranged on the side wall of the valve core 2, and a transfer groove 213 is arranged between the communication groove 21 and the end of the valve core 2, the fluid medium can enter the communication groove 21, and then enter the balance chamber 4 through the balance hole 22.

[0053] Figure 7 FIG. 1 is a schematic structural diagram of a valve body 1 of a valve assembly 100 of the present application. Figure 7 In the embodiment shown, a stopper 9 is provided on one side of the valve body 1 facing the valve core 2, and the stopper 9 is sleeved on the central portion 23 of the valve core 2 facing the valve body 1, and the stopper 9 includes a fixing portion 91 and a plurality of protrusions 92. In this embodiment, the fixing portion 91 is an annular structure, and the protrusions 92 extend from the inner side of the fixing portion 91 toward the direction of the central axis. The plurality of protrusions 92 extend from the fixing portion 91 toward the direction of the central portion 23. In this arrangement, the valve core 2 can rotate according to the position of the stopper 9, and the valve core 2 is prevented from shaking.

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A valve assembly, characterized in that: include: A valve body, comprising a housing and a plurality of connection ports arranged on the housing; A valve core is movably assembled in the valve body; the valve core is sealed and connected to the valve body to form a connecting cavity and a balancing cavity isolated from each other; a plurality of connecting grooves are arranged on the circumference of the valve core, and the valve body rotates around the central axis of the valve body in the valve body so that the connecting grooves are connected with at least two of the connecting ports to form the connecting cavity, and the valve core is provided with at least one balancing hole that passes through the balancing cavity and the connecting cavity.

2. The valve assembly according to claim 1, characterized in that The valve core comprises a first end face and a second end face which are arranged opposite to each other, wherein one of the balancing holes is arranged in a projection area of ​​the valve core where the connecting cavity is projected onto at least one of the first end face and the second end face.

3. The valve assembly according to claim 1, characterized in that The balance chamber comprises a first balance chamber arranged at the circumference of the valve core and a second balance chamber arranged at the center of the valve core, and the first balance chamber is connected to the second balance chamber; The communicating groove comprises a first side wall extending along the central axis of the valve body, wherein one of the balancing holes is provided on the first side wall and communicates the first balancing chamber with the communicating chamber; or The communicating groove comprises a second side wall extending along the central axis of the valve body, wherein one of the balancing holes is disposed on the second side wall and communicates with the second balancing chamber.

4. The valve assembly according to claim 1, characterized in that A transfer groove is provided on the circumferential side of the valve core, and the balancing hole includes a first through hole and a second through hole. The transfer groove is provided with the first through hole connected to the connecting cavity and the second through hole connected to the balancing cavity. The connecting cavity is connected to the balancing cavity through the first through hole and the second through hole.

5. The valve assembly according to any one of claims 1 to 4, characterized in that: The valve core includes a movable plug, which is movably connected in the axial direction of the balancing hole to close or open the balancing hole.

6. The valve assembly according to claim 5, characterized in that The number of the balancing holes is set to be multiple; The movable plug is not disposed in one of the balancing holes communicating with the communicating cavity, and the movable plugs are disposed in the remaining balancing holes, and the movable plugs seal the balancing holes; or The movable plugs are arranged in a plurality of the balancing holes, wherein the movable plug arranged in one of the balancing holes communicating with the communicating cavity is in an open state, and the movable plugs arranged in the remaining balancing holes are in a closed state.

7. The valve assembly according to claim 1, characterized in that Among the multiple connection ports, at least part of the connection ports are distributed in the axial direction of the side wall of the housing; the communication groove includes an axial groove, the axial groove extends in the axial direction of the side wall of the valve core, and when the valve core rotates around the central axis of the valve body in the valve body, at least two of the axially distributed connection ports are connected to the axial groove; and / or Among the multiple connection ports, at least some of the connection ports are distributed in the circumferential direction of the side wall of the shell; the communication groove includes a circumferential groove, the circumferential groove extends in the circumferential direction of the side wall of the valve core, and when the valve core rotates around the central axis of the valve body in the valve body, at least two of the circumferentially distributed connection ports are connected to the circumferential groove; and / or The valve assembly comprises a first sealing assembly, the first sealing assembly comprises a first sealing member and a bracket, the first sealing member is assembled to the inner side wall of the valve body through the bracket; and / or A stopper is provided on one side of the valve body facing the valve core, the stopper is sleeved on the center of the valve core facing the valve body, and the stopper includes a fixed portion and a plurality of raised portions, and the plurality of raised portions extend from the fixed portion toward the central axis of the valve body; and / or The size of the balancing hole ranges from 0.5 to 8 mm.

8. The valve assembly according to claim 1, characterized in that The valve assembly further comprises a valve cover, the valve cover is assembled at the end of the valve body, and the valve core passes through the central hole of the valve cover toward the central part of one end of the valve cover; The valve assembly comprises a second sealing member, the second sealing member being located between the central portion of one end of the valve core facing the valve cover and the central hole of the valve cover; and / or The valve cover is provided with a plurality of reinforcing ribs at one end facing the valve core; and / or A plurality of reinforcing ribs are arranged on one end of the valve core facing the valve cover.

9. A thermal management system, characterized in that: It comprises a plurality of pipelines and a valve assembly as claimed in any one of claims 1 to 8, wherein the plurality of pipelines are connected to a plurality of connection ports of the valve assembly.

10. The thermal management system according to claim 9, characterized in that: The thermal management system includes a driving member, the valve assembly includes a valve core and a valve cover, one end of the valve core includes a central portion passing through a central hole of the valve cover, and the driving member is assembled with the central portion to drive the valve core to rotate.

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