Multi-way valve and thermal management system

Abstract

The utility model discloses a multi-way valve and a heat management system, the multi-way valve comprises a valve seat, a valve cover and a valve core assembly, the valve core assembly is rotatably mounted in a first cavity formed by matching the valve cover and the valve seat, and a second cavity is formed between the valve core assembly and the valve cover; the valve element assembly is provided with a plurality of fluid butt joint structures separated from one another, the valve seat is provided with a plurality of valve seat flow channel openings, and each fluid butt joint structure is provided with a corresponding valve seat flow channel opening matched with the fluid butt joint structure. The valve element assembly further comprises a one-way piece, and the one-way piece is configured to close the communicating hole in the first state and open the communicating hole in the second state so as to allow part of fluid entering the inner space of the fluid butt joint structure to enter the second cavity through the communicating hole in a one-way mode. By arranging the communicating hole and the one-way piece, fluid is accumulated in the second cavity, the pressure in the second cavity is increased, the sealing gasket is tightly pressed on the valve seat, and fluid leakage is avoided.

Description

Technical Field

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

[0002] In the thermal management system of new energy, it is usually necessary to use a multi-way valve to achieve pipeline reversal, thereby simplifying the pipeline.

[0003] In order to ensure the normal use of the multi-way valve, the sealing gasket and the valve seat need to be strictly sealed to prevent fluid leakage. However, when the fluid enters the flow channel in the valve core from the valve seat inlet, there will be an upward pressure on the valve core, causing the valve core to move up with the sealing gasket, and the seal between the sealing gasket and the valve seat will fail, which will cause the fluid to leak from the gap between the sealing gasket and the valve seat to the non-working area, affecting the normal use of the multi-way valve.

[0004] Based on this, it is necessary to provide a multi-way valve and a thermal management system thereof that can avoid fluid leakage. Summary of the invention

[0005] The purpose of the present application is to provide a multi-way valve and a thermal management system that can avoid fluid leakage.

[0006] To achieve the above application purpose, an embodiment of the present application provides a multi-way valve, comprising: a valve seat, a valve cover and a valve core assembly, wherein the valve core assembly is rotatably installed in a first cavity formed by the valve cover and the valve seat, and a second cavity is formed between the valve core assembly and the valve cover;

[0007] The valve core assembly is provided with a plurality of fluid docking structures separated from each other, the valve seat is provided with a plurality of valve seat flow passages, each of the fluid docking structures has a corresponding valve seat flow passage to cooperate with it; the fluid entering from one of the valve seat flow passages flows out from another of the valve seat flow passages through the fluid docking structure; the fluid docking structure can rotate with the valve core assembly and cooperate with different valve seat flow passages; at least one of the fluid docking structures is provided with a connecting hole to connect the internal space of the fluid docking structure with the second cavity;

[0008] The valve core assembly also includes a one-way piece, which is configured to close the communicating hole in a first state and open the communicating hole in a second state to allow part of the fluid entering the internal space of the fluid docking structure to enter the second cavity through the communicating hole in one direction.

[0009] As a further improvement of the present application, the valve core assembly includes:

[0010] The valve core cover comprises a top wall and a side wall, wherein the top wall and the side wall define a partially closed cavity structure, and the valve core cover also comprises a partition wall, wherein the cavity structure is divided by the partition wall to form a plurality of fluid docking structures, and the second cavity is formed between the valve core cover and the valve cover.

[0011] As a further improvement of the present application, each of the fluid docking structures is provided with at least one of the communicating holes, and the number of the one-way parts is multiple, and each of the fluid docking structures has a corresponding one-way part cooperating therewith to open or close the at least one communicating hole; the communicating hole is formed on the top wall of the valve core cover.

[0012] As a further improvement of the present application, the one-way member comprises:

[0013] A mounting portion, through which the one-way member is connected to the valve core cover;

[0014] The movable part is integrally connected with the mounting part and is located in the second cavity when the one-way member is connected with the valve core cover. The movable part can be deformed under the action of fluid pressure to open the connecting hole, and close the connecting hole when restoring the deformation.

[0015] As a further improvement of the present application, each of the fluid docking structures is provided with a mounting hole, and the mounting portion cooperates with the mounting hole to connect the one-way member and the valve core cover; the mounting hole is formed on the top wall of the valve core cover.

[0016] As a further improvement of the present application, the mounting portion includes a column and a boss, one end of the column is connected to the movable portion, and the other end of the column is connected to the boss;

[0017] The column is accommodated in the mounting hole, the boss is at least partially located in the internal space of the fluid docking structure, and abuts against the surface of the top wall of the valve core cover facing away from the valve cover;

[0018] Wherein, the diameter of the boss is larger than the diameter of the mounting hole.

[0019] As a further improvement of the present application, each of the fluid docking structures has a plurality of communicating holes, and the plurality of communicating holes on each of the fluid docking structures are distributed in a ring shape with the corresponding mounting hole as the center.

[0020] As a further improvement of the present application, each of the fluid docking structures is provided with a mounting seat protruding upward, the mounting portion of the one-way member is tubular and at least partially sleeved on the outer periphery of the mounting seat; the mounting seat is provided on one side of the valve core cover close to the valve cover;

[0021] The movable part has an active cavity therein, the inner cavity of the mounting part communicates with the connecting hole and the active cavity, and the movable part can expand the active cavity under the action of fluid pressure to open the connecting hole, and close the connecting hole when contracting the active cavity.

[0022] As a further improvement of the present application, the cross-sectional area of ​​the inner cavity of the mounting portion gradually decreases in the direction extending from the mounting seat to the movable portion.

[0023] To achieve the above application objectives, an embodiment of the present application provides a thermal management system, including the above multi-way valve.

[0024] Compared with the prior art, this application has the following beneficial effects:

[0025] By setting a connecting hole in the fluid docking structure of the valve core assembly, and the valve core assembly including a one-way piece acting on the connecting hole, the fluid can only enter the second cavity in the valve cover through the connecting hole from the fluid docking structure, but cannot flow out from the second cavity to the fluid docking structure. The fluid accumulates in the second cavity, and the pressure in the second cavity increases, which generates downward pressure on the valve core assembly, so that the sealing gasket of the valve core assembly is tightly pressed against the valve seat, and the seal between the sealing gasket and the valve seat is tighter and more reliable, effectively avoiding fluid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of a multi-way valve with a closed communication hole provided in one embodiment of the present application;

[0027] Figure 2 is a cross-sectional view of a multi-way valve with a communication hole opened provided by an embodiment of the present application;

[0028] Figure 3 It is a structural schematic diagram of a valve core assembly without a one-way member installed provided by an embodiment of the present application;

[0029] Figure 4 It is a structural schematic diagram of a valve core assembly provided by an embodiment of the present application and equipped with a one-way member;

[0030] Figure 5 is a bottom view of a valve core cover provided in one embodiment of the present application;

[0031] Figure 6 is a top view of a valve core cover provided in one embodiment of the present application;

[0032] Figure 7 is a top view of a valve core body provided in one embodiment of the present application;

[0033] Figure 8 It is a bottom view of the valve core body provided by one embodiment of the present application;

[0034] Fig. 9 It is a structural schematic diagram of a one-way member provided in an embodiment of the present application;

[0035] Fig.10 is a cross-sectional view of a multi-way valve with a communication hole opened provided by another embodiment of the present application;

[0036] Fig.11 yes Fig.10 A local enlarged view of S1 in FIG.

[0037] Fig.12 is a cross-sectional view of a multi-way valve with closed communication holes provided by another embodiment of the present application;

[0038] Fig.13 yes Fig.12 A local enlarged view of S2 in FIG.

[0039] Fig.14 is a structural schematic diagram of a one-way member provided in another embodiment of the present application;

[0040] Among them, 100, multi-way valve; 10, valve cover; 11, second cavity; 20, valve core assembly; 21, valve core cover; 211, first circulation cavity; 212, second circulation cavity; 213, third circulation cavity; 214, fourth circulation cavity; 215, connecting hole; 216, mounting hole; 217, mounting seat; 2171, hook; 218, clamp; 22, valve core body; 221, first channel opening; 222, second channel opening; 223, third channel opening; 224, fourth channel opening; 225, fifth channel opening; 226, sixth channel opening; 227, seventh channel opening; 228, eighth channel opening; 23, one-way member; 231, mounting portion; 2311, column; 2312, boss; 232, movable portion; 2321, movable cavity; 24, sealing gasket; 30, valve seat. DETAILED DESCRIPTION

[0041] The present application will be described in detail below in conjunction with the specific implementations shown in the accompanying drawings. However, these implementations do not limit the present application, and any structural, methodological, or functional changes made by a person of ordinary skill in the art based on these implementations are all included in the protection scope of the present application.

[0042] It should be understood that the terms used herein, such as "upper", "above", "lower", "below", etc., indicating spatial relative positions, are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] The present application provides a multi-way valve and a thermal management system capable of preventing fluid leakage. The fluid may be a coolant, and of course, depending on the application of the multi-way valve, the fluid may also be water.

[0045] The thermal management system can be used to manage the heat in different areas of new energy vehicles. The multi-way valve, the core component of the thermal management system, can realize the reversal of the pipeline, thereby simplifying the pipeline.

[0046] Example 1

[0047] See also Figures 1 to 9 The multi-way valve 100 comprises: a valve seat 30, a valve cover 10 and a valve core assembly 20, wherein the valve core assembly 20 is rotatably mounted in a first cavity formed by the valve cover 10 and the valve seat 30, and a second cavity 11 is formed between the valve core assembly 20 and the valve cover 10;

[0048] The valve core assembly 20 is provided with a plurality of fluid docking structures separated from each other, and the valve seat 30 is provided with a plurality of valve seat flow passages, and each fluid docking structure has a corresponding valve seat flow passage to cooperate with it; the fluid entering from one valve seat flow passage flows out from another valve seat flow passage through the fluid docking structure; the fluid docking structure can rotate with the valve core assembly 20 and cooperate with different valve seat flow passages; at least one fluid docking structure is provided with a connecting hole 215 to connect the internal space of the fluid docking structure with the second cavity 11;

[0049] The valve core assembly 20 also includes a one-way member 23, which is configured to close the connecting hole 215 in a first state and open the connecting hole 215 in a second state to allow part of the fluid entering the internal space of the fluid docking structure to enter the second cavity 11 through the connecting hole 215 in one direction.

[0050] By setting a connecting hole 215 in the fluid docking structure of the valve core assembly 20, and the valve core assembly includes a one-way piece 23 acting on the connecting hole, the fluid can only enter the second cavity 11 in the valve cover 10 through the connecting hole 215 from the fluid docking structure, and cannot flow out from the second cavity 11 to the fluid docking structure. The fluid accumulates in the second cavity 11, and the pressure in the second cavity 11 increases, which generates downward pressure on the valve core assembly 20, so that the sealing gasket 24 of the valve core assembly 20 is tightly pressed against the valve seat 30, and the seal between the sealing gasket 24 and the valve seat 30 is tighter and more reliable, effectively avoiding fluid leakage.

[0051] See also Figures 1 to 6 The valve core assembly 20 includes: a valve core cover 21, the valve core cover 21 includes a top wall and a side wall, the top wall and the side wall define a partially closed cavity structure, the valve core cover 21 also includes a partition wall, the cavity structure is divided by the partition wall to form a plurality of fluid docking structures, and a second cavity 11 is formed between the valve core cover 21 and the valve cover 10.

[0052] Further, see Figures 3 to 6 Each fluid docking structure is provided with at least one connecting hole 215, and the number of one-way parts 23 is multiple, and each fluid docking structure has a corresponding one-way part 23 to cooperate with it to open or close at least one connecting hole 215; the connecting hole 215 is formed on the top wall of the valve core cover 21.

[0053] By providing a connecting hole 215 and a corresponding one-way piece 23 in each fluid docking structure, liquid cross-talk can be prevented. Specifically, when the fluid enters the internal space of different fluid docking structures (for example, chamber A and chamber B) from different inlets at the bottom of the valve core assembly 20, under the action of the fluid pressure, the one-way pieces 23 of chamber A and chamber B will open the corresponding connecting holes 215 respectively, allowing the fluid to enter the second cavity 11. Since there is a pressure difference between the internal spaces of chamber A and chamber B (for example, the pressure of chamber A is greater than the pressure of chamber B), the fluid overflowing from chamber A will act in reverse on the one-way piece 23 of chamber B, causing the one-way piece 23 of chamber B to close the corresponding connecting hole 215, thereby preventing liquid cross-talk.

[0054] It should be noted that no matter which working mode the multi-way valve 100 runs into, there will always be a connecting hole 215 corresponding to the fluid docking structure open, so that the fluid fills the second cavity 11 and forms a pressure balance inside and outside the valve core assembly 20, thereby ensuring that the sealing gasket 24 is compressed to avoid leakage.

[0055] See also Figures 1 to 8 The valve core assembly 20 may also include: a valve core body 22, the valve core body 22 is located between the valve core cover 21 and the valve seat 30, each fluid docking structure cooperates with the valve core body 22 to form a corresponding flow cavity, and a plurality of channel openings connected to the valve seat flow channel opening are arranged on one side of the valve core body 22 close to the valve seat 30, and the channel openings correspond to the valve seat flow channel openings one by one, so that the valve seat flow channel opening can be connected to the flow cavity. Among them, the number of the valve seat flow channel openings is not less than 3, and the flow cavity can selectively connect at least two of the flow channel openings.

[0056] In this embodiment, there are 8 channel ports, which is an eight-way valve. The 8 channel ports include the first channel port 221 to the eighth channel port 228. There are 4 circulation chambers, including the first circulation chamber 211 to the fourth circulation chamber 214, and each circulation chamber is separated from each other. When the valve core assembly 20 rotates and any working mode is selected, at least two valve seat flow channel ports are connected to the first circulation chamber 211, the second circulation chamber 212, the third circulation chamber 213 or the fourth circulation chamber 214. In other embodiments, the circulation chambers can also be 3, 5 or more, and the channel ports can also be 3, 4, 6 or 8 or more, which is not limited in this application.

[0057] Further, see Figure 1 , Figure 2 , Figure 7 and Figure 8 The valve core body 22 includes a bottom plate and a side plate that are interconnected, the channel opening is formed on the bottom plate, and the side plate fits snugly with the side wall of the valve core cover 21; the valve cover 10 includes a limiting portion, which is opposite to the position of the side plate, and the limiting portion is used to limit the movement of the side plate in the first cavity.

[0058] See also Figure 1 and Figure 2 The valve core assembly 20 may further include a sealing gasket 24, which is disposed between the valve core body 22 and the valve seat 30, and the sealing gasket 24 is provided with through holes corresponding to the channel openings. The valve seat 30 is provided with a convex rib at one end facing the sealing gasket 24, and the convex rib can be embedded in the sealing gasket 24, thereby enhancing the sealing performance.

[0059] The valve core body 22 can exert a downward force on the sealing gasket 24, that is, the sealing gasket 24 is interference-fitted between the valve core body 22 and the valve seat 30, so that the sealing gasket 24 is appropriately compressed, thereby ensuring the sealing performance. In this embodiment, the sealing gasket 24 is a rubber sealing gasket 24, and in other embodiments, the sealing gasket 24 can also be a silicone sealing gasket 24 or a plastic sealing gasket 24.

[0060] See also Figure 1 and Figure 2 The one-way member 23 includes: a mounting portion 231, through which the one-way member 23 is connected to the valve core cover 21; and a movable portion 232, which is integrally connected to the mounting portion 231 and is located in the second cavity 11 when the one-way member 23 is connected to the valve core cover 21. The movable portion 232 can be deformed under the action of fluid pressure to open the communication hole 215, and can close the communication hole 215 when restoring the deformation. The movable portion 232 can be made of a material with elastic deformation ability, such as silicone and rubber.

[0061] It is understandable that when the movable portion 232 is not subjected to external pressure, it fits with the top wall of the valve core cover 21 close to the second cavity 11, thereby closing the connecting hole 215 on the valve core cover 21. In the first state, the pressure of the circulation cavity is greater than the pressure of the second cavity 11, and the movable portion 232 above the connecting hole 215 is deformed and pushed open, and the fluid in the circulation cavity enters the second cavity 11 through the connecting hole 215 (such as Figure 2 In the second state, the pressure of the second cavity 11 is greater than the pressure of the flow cavity, the movable portion 232 recovers its deformation, and the connecting hole 215 is closed (as shown in FIG. Figure 1 The one-way member 23 opens and closes the connecting hole 215 through elastic deformation, has a simple structure and low manufacturing cost.

[0062] See also Figure 5 , Figure 6 and Fig. 9 Furthermore, each fluid docking structure is provided with a mounting hole 216, and the mounting portion 231 cooperates with the mounting hole 216 to connect the one-way member 23 and the valve core cover 21; the mounting hole 216 is formed on the top wall of the valve core cover 21. The mounting portion 231 includes a column 2311 and a boss 2312, one end of the column 2311 is connected to the movable portion 232, and the other end of the column 2311 is connected to the boss 2312; the column 2311 is accommodated in the mounting hole 216, and the boss 2312 is at least partially located in the internal space of the fluid docking structure and abuts against the surface of the top wall of the valve core cover 21 away from the valve cover 10; wherein the diameter of the boss 2312 is greater than the diameter of the mounting hole 216. By providing the boss 2312, the movement of the column 2311 in its own height direction can be limited, so that the installation of the one-way member 23 is more stable.

[0063] In this embodiment, the structure of the one-way member 23 is similar to an umbrella, the umbrella handle (i.e., the column 2311) is inserted into the mounting hole 216, and the umbrella surface (i.e., the movable portion 232) is used to block the connecting hole 215. Each fluid docking structure has a plurality of connecting holes 215, and the plurality of connecting holes 215 on each fluid docking structure are distributed in a ring shape with the corresponding mounting hole 216 as the center. One one-way member 23 can close a plurality of connecting holes 215. Specifically, in the second state, the movable portion 232 of the one-way member 23 can completely cover the corresponding plurality of connecting holes 215.

[0064] It should be noted that: during the use of the multi-way valve 100 of this embodiment, the second cavity 11 is filled with fluid and maintains a relatively high pressure, which can ensure that the sealing gasket 24 is tightly pressed against the valve seat 30. When the multi-way valve 100 stops being used, the pressure in the second cavity 11 will gradually decrease due to thermal expansion and contraction, and since the movable portion 232 of the one-way member 23 is not tightly fitted to the valve core cover 21, a small amount of fluid will flow out of the second cavity 11 through the connecting hole 215 to the circulation cavity.

[0065] When the multi-way valve 100 is used again, new fluid will be added to the second cavity 11 until the second cavity 11 is full, and the pressure of the second cavity 11 will also increase, thereby ensuring the sealing effect of the sealing gasket 24 .

[0066] Example 2

[0067] The difference between this embodiment and the first embodiment is only that the structure and installation method of the one-way member 23 are different.

[0068] Specifically, see Figures 10 to 14 In this embodiment, each fluid docking structure is provided with a mounting seat 217 protruding upward, and the mounting portion 231 of the one-way member 23 is tubular and at least partially sleeved on the outer periphery of the mounting seat 217; the mounting seat 217 is arranged on the side of the valve core cover 21 close to the valve cover 10; the movable portion 232 has an active cavity 2321, and the inner cavity of the mounting portion 231 is connected to the corresponding connecting hole 215 and the active cavity 2321. The movable portion 232 can expand the active cavity 2321 under the action of fluid pressure to open the connecting hole 215, and close the connecting hole 215 when contracting the active cavity 2321.

[0069] It can be understood that the mounting seat 217 is an annular boss 2312 , and the communicating hole 215 is located on the valve core cover 21 surrounded by the mounting seat 217 .

[0070] Furthermore, a hook 2171 is provided at the end of the mounting seat 217, and a bamboo section (not shown) is provided on the outer periphery of the mounting seat 217. The bamboo section has a larger diameter and can form an interference fit with the mounting portion 231 to achieve a preliminary connection and fixation between the mounting portion 231 and the mounting seat 217. The valve core cover 21 is provided with a clamp 218, which is sleeved on the outside of the mounting portion 231 and can lock the mounting portion 231, so that the connection between the mounting portion 231 and the mounting seat 217 is more compact and stable.

[0071] In this embodiment, the cross-sectional area of ​​the inner cavity of the mounting portion 231 gradually decreases in the direction extending from the mounting seat 217 to the movable portion 232. Generally speaking, in order to facilitate the contraction of the movable cavity 2321 of the movable portion 232, the opening of the movable cavity 2321 is set to be smaller, and the cross-sectional area of ​​the inner cavity of the mounting portion 231 gradually decreases in the direction extending from the mounting seat 217 to the movable portion 232, so that the transition between the mounting portion 231 and the movable portion 232 is smoother and the flow of the fluid is smoother.

[0072] In the first state, the pressure of the circulation cavity is greater than the pressure of the second cavity 11, the movable cavity 2321 of the movable part 232 expands, and the fluid in the circulation cavity enters the second cavity 11 through the connecting hole 215, the inner cavity of the mounting part 231, and the movable cavity 2321 of the movable part 232 in sequence (such as Fig.10In the second state, the pressure of the second cavity 11 is greater than the pressure of the circulation cavity, the active cavity 2321 of the active portion 232 shrinks, the connecting hole 215 is closed, and the fluid cannot enter the circulation cavity through the active portion 232 (as shown in FIG. Fig.12 shown).

[0073] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0074] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-way valve, comprising: A valve seat, a valve cover and a valve core assembly, wherein the valve core assembly is rotatably mounted in a first cavity formed by the cooperation of the valve cover and the valve seat, and a second cavity is formed between the valve core assembly and the valve cover; The valve core assembly is provided with a plurality of fluid docking structures separated from each other, the valve seat is provided with a plurality of valve seat flow passages, each of the fluid docking structures has a corresponding valve seat flow passage to cooperate with it; the fluid entering from one of the valve seat flow passages flows out from another of the valve seat flow passages through the fluid docking structure; the fluid docking structure can rotate with the valve core assembly and cooperate with different valve seat flow passages; at least one of the fluid docking structures is provided with a connecting hole to connect the internal space of the fluid docking structure with the second cavity; It is characterized in that The valve core assembly also includes a one-way piece, which is configured to close the communicating hole in a first state and open the communicating hole in a second state to allow part of the fluid entering the internal space of the fluid docking structure to enter the second cavity through the communicating hole in one direction.

2. The multi-way valve according to claim 1, characterized in that: The valve core assembly comprises: The valve core cover comprises a top wall and a side wall, wherein the top wall and the side wall define a partially closed cavity structure, and the valve core cover also comprises a partition wall, wherein the cavity structure is divided by the partition wall to form a plurality of fluid docking structures, and the second cavity is formed between the valve core cover and the valve cover.

3. The multi-way valve according to claim 2, characterized in that: Each of the fluid docking structures is provided with at least one of the communicating holes, and the number of the one-way parts is multiple, and each of the fluid docking structures has a corresponding one-way part cooperating therewith to open or close the at least one communicating hole; the communicating hole is formed on the top wall of the valve core cover.

4. The multi-way valve according to claim 3, characterized in that: The one-way piece comprises: A mounting portion, through which the one-way member is connected to the valve core cover; The movable part is integrally connected with the mounting part and is located in the second cavity when the one-way member is connected with the valve core cover. The movable part can be deformed under the action of fluid pressure to open the connecting hole, and close the connecting hole when restoring the deformation.

5. The multi-way valve according to claim 4, characterized in that: Each of the fluid docking structures is provided with a mounting hole, and the mounting portion cooperates with the mounting hole to connect the one-way member and the valve core cover; the mounting hole is formed on the top wall of the valve core cover.

6. The multi-way valve according to claim 5, characterized in that: The mounting portion includes a column and a boss, one end of the column is connected to the movable portion, and the other end of the column is connected to the boss; The column is accommodated in the mounting hole, the boss is at least partially located in the internal space of the fluid docking structure, and abuts against the surface of the top wall of the valve core cover facing away from the valve cover; Wherein, the diameter of the boss is larger than the diameter of the mounting hole.

7. The multi-way valve according to claim 5, characterized in that: Each of the fluid docking structures has a plurality of communication holes, and the plurality of communication holes on each of the fluid docking structures are distributed in a ring shape with the corresponding mounting hole as the center.

8. The multi-way valve according to claim 4, characterized in that: Each of the fluid docking structures is provided with a mounting seat protruding upward, the mounting portion of the one-way member is tubular and at least partially sleeved on the outer periphery of the mounting seat; the mounting seat is provided on one side of the valve core cover close to the valve cover; The movable part has an active cavity therein, the inner cavity of the mounting part communicates with the connecting hole and the active cavity, and the movable part can expand the active cavity under the action of fluid pressure to open the connecting hole, and close the connecting hole when contracting the active cavity.

9. The multi-way valve according to claim 8, characterized in that: In a direction extending from the mounting seat to the movable portion, a cross-sectional area of ​​the inner cavity of the mounting portion gradually decreases.

10. A thermal management system, characterized in that: It comprises the multi-way valve as claimed in any one of claims 1 to 9.

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