CN217207877U

CN217207877U - Multi-way valve and thermal management system thereof

Info

Publication number: CN217207877U
Application number: CN202123425410.5U
Authority: CN
Inventors: 邓树平
Original assignee: Zhejiang Yinlun Machinery Co Ltd
Current assignee: Zhejiang Yinlun Machinery Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-08-16
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to the technical field of valves, especially, relate to multi-ported valve and thermal management system thereof. A multi-way valve comprises a valve seat, a valve cover and a valve core assembly, wherein the valve cover is arranged on the valve seat, the valve core assembly is arranged in the valve seat and abutted against the valve seat, a plurality of circulation ports are formed in the valve seat, a circulation cavity is formed in the valve core assembly, and the valve core assembly can rotate so that the circulation can be selectively communicated with the circulation ports; the valve core assembly comprises a valve core body, a cavity is arranged in the valve seat and is positioned on one side, away from the circulation port, of the valve core body, the circulation cavity is positioned in the valve core body, a balance hole communicated with the circulation cavity is formed in the valve core body, and the circulation cavity is communicated with the cavity through the balance hole. The utility model has the advantages that: the rotary torque of the valve core body can be reduced, so that the valve core body can smoothly rotate to realize reversing.

Description

Multi-way valve and thermal management system thereof

Technical Field

The utility model relates to the technical field of valves, especially, relate to multi-ported valve and thermal management system thereof.

Background

The automobile heat management system is provided with a multi-way valve to realize the reversing of the pipeline, thereby simplifying the pipeline.

In current multi-ported valve, when the pressure of circulation mouth department is great, can be with the lifting of case body for the medium leaks in the cavity, and when the pressure of circulation mouth department reduced, the pressure in the cavity was greater than the pressure of circulation mouth department, makes the case body receive the pressure towards the disk seat diapire, thereby increases the turning moment of case body, leads to the rotatory difficulty of case body even unable rotation.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is desirable to provide a multi-way valve and a thermal management system thereof that can reduce the rotational torque of the valve body.

A multi-way valve comprises a valve seat, a valve cover and a valve core assembly, wherein the valve cover is arranged on the valve seat, the valve core assembly is arranged in the valve seat and abutted against the valve seat, a plurality of flow ports are formed in the valve seat, a flow cavity is formed in the valve core assembly, and the valve core assembly can rotate to enable the flow ports to be selectively communicated with the flow ports; the valve core assembly comprises a valve core body, a cavity is arranged in the valve seat and is positioned on one side, away from the circulation port, of the valve core body, the circulation cavity is positioned in the valve core body, a balance hole communicated with the circulation cavity is formed in the valve core body, and the circulation cavity is communicated with the cavity through the balance hole.

It can be understood that the balance holes can balance the pressure on two sides of the valve core body, the rotating torque of the valve core body is reduced, the valve core body can smoothly rotate to realize reversing, and the problem that the valve core body is difficult to rotate or fails to rotate due to the fact that the valve core body is tightly pressed on the inner wall of the valve seat due to the fact that the pressure in the cavity is too large is avoided.

In one embodiment, the multi-way valve further comprises a one-way element arranged in the balance hole, and the one-way element is used for one-way communication of media from the cavity to the circulation cavity.

It can be understood that the medium can only flow from the cavity to the circulation cavity and can not flow from the circulation cavity to the cavity, and the pressure of the medium in the cavity can be reduced, so that the rotation moment of the valve core body is reduced.

In one embodiment, the balancing hole comprises a matching hole and a containing hole communicated with the matching hole, the containing hole is arranged close to the circulation cavity relative to the matching hole, the one-way element penetrates through the containing hole and extends out of the containing hole, the hole diameter of the matching hole is gradually increased along the direction close to the circulation cavity, and the outer side wall of one end, close to the circulation cavity, of the one-way element can abut against the inner wall of the matching hole.

It can be understood that when the medium pressure in the circulation cavity is larger than the medium pressure in the cavity, the outer side wall of the one-way element abuts against the matching hole, and the one-way element is closed.

In one embodiment, the one-way component comprises a sealing section and a plurality of buckles, one end of each buckle is connected with the sealing section, the other end of each buckle extends towards the direction far away from the sealing section, the buckles are arranged at intervals, the outer side wall of the sealing section comprises an arc surface, and the arc surface can abut against the inner wall of the matching hole.

It can be understood that the interval sets up and makes the buckle have elasticity, when putting into the balancing hole with the unidirectional part installation, can extrude the buckle for draw close each other between the buckle, easy to assemble.

In one embodiment, the fastener includes a first section and a second section, the first section is disposed outside the balance hole, the second section is disposed in the accommodating hole and is in clearance fit with an inner wall of the accommodating hole, the second section is respectively connected with the first section and the sealing section, and an outer diameter of one end of the first section, which is close to the second section, is larger than an outer diameter of the second section, so that a step is formed between the first section and the second section, and the step can abut against an end face of an orifice of the balance hole.

It can be understood that when the medium pressure in the cavity is greater than the medium pressure in the circulation cavity, the medium flows to the circulation cavity from the gaps among the plurality of buckles and the gaps between the buckles and the inner wall of the balance hole to be decompressed.

In one embodiment, the circulation cavities are multiple, each circulation cavity is isolated from the other circulation cavity, and the inner wall of each circulation cavity is provided with the balance hole.

It will be appreciated that the valve core assembly can be rotated smoothly in each mode of operation.

In one embodiment, the valve core assembly further comprises a sealing gasket, the sealing gasket is arranged between the valve core body and the bottom wall of the valve seat, a plurality of through holes communicated with the flow openings are formed in the sealing gasket, and the through holes correspond to the flow openings one to one.

It will be appreciated that the gasket enables sealing between the various flow passages.

In one embodiment, a convex rib is arranged at one end, facing the sealing gasket, of the valve core body, and the convex rib abuts against the sealing gasket.

It will be appreciated that the ribs can enhance the seal.

In one embodiment, the multi-way valve further comprises a driving assembly, at least a portion of the driving assembly is disposed on the valve cover, and the driving assembly is connected to the valve core assembly to drive the valve core assembly to rotate.

The utility model also provides a thermal management system, including foretell multi-ported valve.

Compared with the prior art, the utility model provides a multi-way valve is through this internal balance hole that sets up of case for through balance hole intercommunication, can balance the pressure of case body both sides between cavity and the circulation chamber, reduced the turning moment of case subassembly, make the case subassembly can rotate smoothly, thereby accomplish the switching-over function.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the conventional technologies, the drawings required to be used in the description of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a multi-way valve provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of a one-way element;

FIG. 4 is a top view of the one-way element;

FIG. 5 is a bottom view of the cartridge body;

FIG. 6 is a bottom view of the multi-way valve;

FIG. 7 is a perspective view of the multi-way valve.

The symbols in the drawings represent the following meanings:

100. a multi-way valve; 10. a valve seat; 11. a sealing groove; 12. a first seal ring; 13. a flow port; 131. a first circulation port; 132. a second flow port; 133. a third flow port; 134. a fourth flow port; 135. a fifth circulation port; 14. a valve cavity; 141. a cavity; 20. a valve cover; 30. a valve core assembly; 31. a valve core body; 311. a valve core cover body; 312. a valve core main body; 313. a balance hole; 3131. a mating hole; 3132. a housing hole; 314. a rib is protruded; 315. a flow-through chamber; 3151. a first chamber; 3152. a second chamber; 3153. a third chamber; 32. a rotating shaft; 33. a gasket; 321. a second seal ring; 40. a one-way member; 41. a sealing section; 411. a cambered surface; 42. buckling; 421. a first stage; 422. a second stage; 423. a step; 50. a drive assembly; 51. a housing; 52. a gear train.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The use of the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions in the description of the invention is for illustrative purposes only and does not represent a unique embodiment.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may mean that the first feature is directly in contact with the second feature or that the first feature and the second feature are indirectly in contact with each other through an intermediate medium. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 7, the present invention provides a multi-way valve 100, which is installed on a new energy vehicle, for example, applied to a pure electric vehicle or a hybrid electric vehicle as a component of a thermal management system, to implement a media reversing function. In this embodiment, the medium is a cooling fluid, although in other embodiments, the medium may also be water, depending on the application of the multi-way valve 100.

Specifically, the multi-way valve 100 includes a valve seat 10, a valve cover 20 and a valve core assembly 30, the valve cover 20 covers the valve seat 10, the valve core assembly 30 is disposed in the valve seat 10, a plurality of circulation ports 13 are formed in the valve seat 10 and are used for being connected with an external pipeline, a circulation cavity 315 is formed in the valve core assembly 30, and the valve core assembly 30 can rotate, so that the plurality of circulation ports 13 can be selectively communicated with the circulation cavity 315 to realize a reversing function.

The end face, close to the valve cover 20, of the valve seat 10 is provided with a sealing groove 11, a first sealing ring 12 is arranged in the sealing groove 11, and the first sealing ring 12 is abutted to the valve cover 20, so that the valve seat 10 is hermetically connected with the valve cover 20. The valve seat 10 and the valve cover 20 are fixedly connected by screws, but not limited to the screw connection, and may also be fixedly connected by clamping, gluing, welding, and the like.

In the present embodiment, the communication port 13 is opened at the bottom of the valve seat 10, but of course, in other embodiments, the communication port 13 may be opened at the side wall of the valve seat 10.

The valve core assembly 30 includes a valve core body 31 and a rotating shaft 32, the rotating shaft 32 penetrates through the valve core body 31 and is fixedly connected with the valve core body 31, and the rotating shaft 32 can drive the valve core body 31 to rotate. The flow chamber 315 is opened in the valve body 31, and the rotary shaft 32 is hermetically connected to the valve cover 20.

A second seal 321 is provided around the rotating shaft 32, and the rotating shaft 32 and the bonnet 20 are sealingly connected by the second seal 321 contacting the inner wall of the bonnet 20.

The valve body 31 includes a valve body cover 311 and a cylindrical valve body 312, the opening of the valve body 31 faces the flow opening 13, the valve body cover 311 covers the opening of the valve body 312, and the valve body cover 311 and the valve body 312 cooperate to form a flow cavity 315. The valve body cover 311 has a plurality of flow holes (not shown) formed therein so that the flow port 13 can communicate with the flow chamber 315.

The valve core assembly 30, the valve seat 10 and the valve cover 20 cooperate to form a valve cavity 14, the valve cavity 14 includes a cavity 141, the cavity 141 is located on a side of the valve core body 31 away from the flow opening 13, a balance hole 313 is formed in the valve core body 31, and the balance hole 313 is respectively communicated with the cavity 141 and the flow cavity 315.

It will be understood that when the medium pressure at one of the communication ports 13 as an inlet is large, the spool body 31 is lifted, and the medium enters the cavity 141 from the gap between the spool body 31 and the inner wall of the valve seat 10, so that the pressure in the cavity 141 is increased. When the medium pressure at the flow port 13 is reduced to be less than the pressure in the cavity 141, the medium pressure may press the valve core body 31, increasing the rotation torque of the valve core body 31, causing the valve core body 31 to be difficult to rotate or fail to rotate, which affects smooth reversing. And the utility model discloses a set up balancing hole 313 for pressure in the cavity 141 unloads through balancing hole 313, thereby the pressure of balanced case body 31 both sides reduces the turning moment of case body 31, makes case body 31 rotatory smoothly.

The valve core assembly 30 further comprises a sealing gasket 33, the sealing gasket 33 is arranged between the valve core body 31 and the bottom wall of the valve seat 10, and the sealing gasket 33 can be used for isolating each flow channel and preventing the media from flowing. The gasket 33 is provided with a plurality of through holes (not shown) corresponding to the flow ports 13 one by one, and the flow ports 13 are communicated with the flow cavity 315 through the through holes. When the valve body 31 is rotated, the packing 33 is not rotated, so that the sealing function of the packing 33 is ensured and the communication ports 13 can communicate with each other through the through hole and the communication chamber 315. When the pressure in the cavity 141 is relatively high, the pressure difference between the cavity 141 and the flow cavity 315 causes the valve body 31 to tightly attach to the gasket 33, and since the gasket 33 has relatively low hardness, the valve body 31 presses the gasket 33, so that the rotation torque of the valve body 31 is further increased, and the balance hole 313 can reduce the rotation torque of the valve body 31.

In the present embodiment, the gasket 33 is a rubber gasket 33, and in other embodiments, the gasket 33 may also be a silicone gasket 33 or a plastic gasket 33.

The valve body 31 is provided with a rib 314 at one end facing the gasket 33, the rib 314 can abut against the gasket 33, and the rib 314 can be embedded into the gasket 33 because the gasket 33 is soft, thereby enhancing the sealing property. The rib 314 may be provided on the end surface of the barrel opening of the valve body 312, or may be provided on the valve body cover 311.

The rib 314 is annular, or the rib 314 is a plurality of, and a plurality of ribs 314 surround the circumference of the valve core cover 311 and are evenly arranged.

The diameter of the rib 314 is gradually reduced in the direction close to the gasket 33, so that the end of the rib 314 close to the gasket 33 is pointed, so that the rib 314 is better embedded in the gasket 33.

Referring to fig. 2 and 3, the multi-way valve 100 further includes a one-way element 40 disposed in the balancing hole 313, and the one-way element 40 is used for guiding and conducting the medium from the cavity 141 to the flow-through cavity 315. It will be appreciated that the provision of the check member 40 ensures that the pressure on the side of the spool body 31 remote from the communication port 13 is small without pushing the spool body 31 toward the communication port 13, and the rotational moment of the spool body 31 can be further reduced.

The balancing hole 313 includes a fitting hole 3131 and a receiving hole 3132, the fitting hole 3131 is disposed closer to the circulation chamber 315 than the receiving hole 3132, and the one-way element 40 extends from the fitting hole 3131, penetrates through the receiving hole 3132, and extends from the receiving hole 3132. The lateral wall of the matching hole 3131 is surrounded to be a circular truncated cone, the aperture of the matching hole 3131 is gradually increased along the direction close to the circulation cavity 315, the outer lateral wall of one end of the one-way element 40 close to the circulation cavity 315 can be abutted to the inner wall of the matching hole 3131, the one-way element 40 is limited, the one-way element 40 is prevented from being flushed into the cavity 141, the one-way element 40 and the balance hole 313 can form a conical surface seal, and a medium is prevented from leaking into the cavity 141 from the circulation cavity 315.

The one-way element 40 comprises a sealing section 41, the outer side wall of the sealing section 41 comprises an arc surface 411, and the arc surface 411 can abut against the conical surface of the matching hole 3131, so that friction between the one-way element 40 and the inner wall of the balance hole 313 is reduced, and abrasion is relieved.

The one-way member 40 further comprises a plurality of catches 42, the catches 42 being connected to one end of the sealing section 41. The plurality of buckles 42 are arranged at intervals, the medium can flow into the circulation cavity 315 from the intervals, the buckles 42 arranged at intervals have elasticity, and when the one-way element 40 is installed, the buckles 42 are extruded, so that the buckles 42 are close to each other, and the installation is convenient; after the installation is completed, the latch 42 is reset, and is latched in the balance hole 313.

The buckle 42 includes first section 421 and second section 422, first section 421 is located in cavity 141, second section 422 is located in balanced hole 313 and is connected with first section 421 and sealing section 41 respectively, second section 422 and balanced hole 313's inner wall clearance fit, thereby increase the flow of medium, the external diameter that first section 421 is close to second section 422's one end is greater than second section 422's external diameter, make and form step 423 between first section 421 and the second section 422, step 423 can support by the terminal surface in balanced hole 313, play limiting displacement. When the medium pressure in the cavity 141 is larger than the medium pressure in the circulation cavity 315, the medium pushes the one-way element 40 to move, the sealing section 41 is released from the abutting joint with the matching hole 3131, the one-way element 40 is opened, and the medium flows into the circulation cavity 315 from the gaps between the plurality of buckles 42 and the gap between the second section 422 and the containing hole 3132 to be decompressed; when the pressure of the medium in the flow cavity 315 is lower than the pressure of the medium in the flow cavity 315, the medium pushes the one-way element 40 to move, the sealing section 41 abuts against the inner wall of the matching hole 3131, and the one-way element 40 is closed.

Referring to fig. 4, the outer side surface of the first section 421 is a tapered surface, which plays a guiding role when the unidirectional element 40 is installed in the balancing hole 313, so as to facilitate the installation of the unidirectional element 40.

Referring to fig. 5, the flow cavities 315 are multiple, the flow cavities 315 are isolated from each other, and a balance hole 313 is formed in each flow cavity 315, so that the valve core assembly 30 can smoothly rotate in each working mode.

In this embodiment, the number of the circulation cavities 315 is three, which are respectively a first cavity 3151, a second cavity 3152 and a third cavity 3153, the third cavity 3153 is located between the first cavity 3151 and the second cavity 3152, and the first cavity 3151, the second cavity 3152 and the third cavity 3153 are arranged in a mutually isolated manner; the number of the flow ports 13 is 5, and the flow ports 13 are five-way valves, and the 5 flow ports 13 are respectively a first flow port 131, a second flow port 132, a third flow port 133, a fourth flow port 134 and a fifth flow port 135, and when the valve core assembly 30 is rotated to any one working state, at least two flow ports 13 are communicated with the first cavity 3151, the second cavity 3152 or the third cavity 3153. In other embodiments, the number of the flow cavities 315 may be 2, 4, or more, and the number of the flow ports 13 may be 3, 4, 6, or more than 6, which is not limited by the present invention.

Referring to fig. 6, for example, when the first port 131 and the fifth port 135 are respectively communicated with the third chamber 3153, the fourth port 134 is communicated with the first chamber 3151, and the second port 132 and the third port 133 are respectively communicated with the second chamber 3152, a path of medium enters from the fifth port 135 and flows out from the third port 133, a path of medium enters from the second port 132 and flows out from the third port 133, and the fourth port 134 is closed; alternatively, one medium enters from the third port 133 and flows out from the fifth port 135, and one medium enters from the third port 133 and flows out from the second port 132, that is, the inlet and the outlet may be interchanged. Other modes of operation are not described in detail herein.

The multi-way valve 100 further includes a driving assembly 50, wherein the driving assembly 50 is connected to the rotating shaft 32 and can drive the rotating shaft 32 to rotate, so as to drive the valve core body 31 to rotate.

The driving assembly 50 includes a motor (not shown), a gear train 52 and a housing 51, the motor and the gear train 52 are disposed in the housing 51, the housing 51 is disposed on the valve cover 20, an output shaft of the motor is fixedly connected to the gear train 52, the gear train 52 is sleeved outside the rotating shaft 32, the output shaft of the motor rotates to drive the gear train 52 to rotate, and the gear train 52 drives the rotating shaft 32 to rotate. The housing 51 is fixedly connected with the valve cap 20 by screws, but the connection is not limited to the manner of screw connection, and may also be fixed by clamping, gluing, welding, and the like.

The utility model also provides a thermal management system, including foretell multi-ported valve 100.

In the working process, a medium enters from the flow port 13 serving as an inlet, the pressure is high, the valve element body 31 is pushed to move towards the direction far away from the sealing gasket 33, the medium enters the cavity 141, the pressure in the cavity 141 is increased, and when the pressure in the cavity 141 is higher than the pressure in the flow cavity 315, the medium enters the one-way element 40 and pushes the one-way element 40 to move, so that the one-way element 40 is unsealed from the balance hole 313, and the medium flows into the flow cavity 315 to be decompressed; when the medium pressure in the circulation cavity 315 is greater than the medium pressure in the cavity 141, the medium pushes the one-way element 40 to move, so that the sealing section 41 of the one-way element 40 abuts against the inner wall of the fitting hole 3131, and the one-way element 40 is closed. The utility model discloses a set up balancing hole 313 for the pressure balance of case body 31 both sides has reduced the rotation moment of case subassembly 30, makes case subassembly 30 rotate smoothly, thereby accomplishes the switching-over.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A multi-way valve comprises a valve seat (10), a valve cover (20) and a valve core assembly (30), wherein the valve cover (20) is arranged on the valve seat (10) in a covering manner, the valve core assembly (30) is arranged in the valve seat (10) and abutted against the valve seat (10), a plurality of flow openings (13) are formed in the valve seat (10), a flow cavity (315) is formed in the valve core assembly (30), and the valve core assembly (30) can rotate so that the flow openings (13) can be selectively communicated with the flow openings (13);

the valve core assembly (30) is characterized by comprising a valve core body (31), a cavity (141) is arranged in the valve seat (10), the cavity (141) is positioned on one side, away from the circulation port (13), of the valve core body (31), the circulation chamber (315) is positioned in the valve core body (31), a balance hole (313) communicated with the circulation chamber (315) is formed in the valve core body (31), and the circulation chamber (315) is communicated with the cavity (141) through the balance hole (313).

2. The multi-way valve according to claim 1, further comprising a one-way element (40) arranged in the balancing hole (313), the one-way element (40) being used for one-way communication of media from the cavity (141) to the flow-through chamber (315).

3. The multi-way valve according to claim 2, wherein the balancing hole (313) comprises a fitting hole (3131) and a receiving hole (3132) communicating with the fitting hole (3131), the receiving hole (3132) is disposed close to the flow-through cavity (315) relative to the fitting hole (3131), the one-way element (40) is inserted into the receiving hole (3132) and extends out of the receiving hole (3132), the aperture of the fitting hole (3131) is gradually increased along a direction close to the flow-through cavity (315), and an outer side wall of the one-way element (40) close to one end of the flow-through cavity (315) can abut against an inner wall of the fitting hole (3131).

4. The multi-way valve according to claim 3, wherein the one-way element (40) comprises a sealing section (41) and a plurality of buckles (42), one end of each buckle (42) is connected with the sealing section (41), the other end of each buckle (42) extends towards the direction away from the sealing section (41), the plurality of buckles (42) are arranged at intervals, the outer side wall of the sealing section (41) comprises an arc surface (411), and the arc surface (411) can abut against the inner wall of the matching hole (3131).

5. The multi-way valve according to claim 4, wherein the buckle (42) comprises a first section (421) and a second section (422), the first section (421) is arranged outside the balancing hole (313), the second section (422) is arranged in the accommodating hole (3132) and is in clearance fit with the inner wall of the accommodating hole (3132), the second section (422) is respectively connected with the first section (421) and the sealing section (41), the outer diameter of one end of the first section (421) close to the second section (422) is larger than that of the second section (422), so that a step (423) is formed between the first section (421) and the second section (422), and the step (423) can abut against the end face of the orifice of the balancing hole (313).

6. The multi-way valve according to claim 1, characterized in that the number of flow-through chambers (315) is multiple, each flow-through chamber (315) is isolated from each other, and the inner wall of each flow-through chamber (315) is provided with the balancing hole (313).

7. The multi-way valve according to claim 1, wherein the valve core assembly (30) further comprises a sealing gasket (33), the sealing gasket (33) is arranged between the valve core body (31) and the bottom wall of the valve seat (10), the sealing gasket (33) is provided with a plurality of through holes communicated with the communication ports (13), and the through holes correspond to the communication ports (13) in a one-to-one manner.

8. The multi-way valve according to claim 7, characterized in that one end of the valve element body (31) facing the sealing gasket (33) is provided with a rib (314), and the rib (314) abuts against the sealing gasket (33).

9. The multi-way valve of claim 1, further comprising a drive assembly (50), at least a portion of the drive assembly (50) being disposed on the bonnet (20), the drive assembly (50) being coupled to the spool assembly (30) to drive the spool assembly (30) to rotate.

10. A thermal management system comprising a multi-way valve according to any of claims 1 to 9.