Multi-way valve, auxiliary water tank assembly and heat management system

Abstract

The utility model discloses a multi-way valve, an auxiliary water tank assembly and a heat management system. The valve body is covered with the cover plate, a containing cavity is formed between the valve body and the cover plate, and a plurality of valve ports communicating with the containing cavity are formed in the valve body; the valve element is arranged in the containing cavity, a notch is formed in the valve element in the circumferential direction, the notch and the valve body form a flow channel, and the flow channel is used for being communicated with the valve port. The projection of the notch on the valve body is in an arc shape, the central angle corresponding to the arc shape is alpha, and alpha meets the relational expression that alpha is larger than or equal to 180 degrees and smaller than 225 degrees. The central angle corresponding to the notch is larger than 180 degrees, so that the notch can be communicated with at least two valve ports, and the opening degree of the valve ports can be controlled when the flow channel is communicated with at least three valve ports.

Description

Technical Field

[0001] This utility model relates to the field of multi-way valve technology, and in particular to a multi-way valve, a secondary water tank assembly, and a thermal management system. Background Technology

[0002] In automotive thermal management, water valves are used to switch the water circuit on and off and adjust the opening degree in order to regulate the temperature of various parts of the vehicle.

[0003] In related technologies, electronic water valves have fixed flow channels and fixed modes, which cannot flexibly adapt to changes in various working conditions and cannot achieve precise linear proportional regulation of flow. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multi-way valve.

[0005] A multi-port valve according to a first aspect of the present invention includes: a cover plate; a valve body, wherein the cover plate covers the valve body, a receiving cavity is formed between the valve body and the cover plate, and the valve body is provided with a plurality of valve ports communicating with the receiving cavity; a valve core, wherein the valve core is disposed in the receiving cavity, the valve core is provided with a notch in the circumferential direction, the notch and the valve body constitute a flow channel, the flow channel being used to communicate with the valve ports; wherein the projection of the notch on the valve body is arc-shaped, the central angle corresponding to the arc is α, the number of valve ports is n, and α and n satisfy the relationship: 720° / n≤α<900° / n.

[0006] According to the multi-port valve of this utility model embodiment, the central angle corresponding to the notch is greater than or equal to 720° divided by the number of valve ports and less than 900° divided by the number of valve ports. Therefore, the notch can connect at least two valve ports, and the opening degree of the valve ports can be controlled when the flow channel connects at least three of the valve ports.

[0007] According to the multi-port valve of the present invention, the flow channel selectively connects at least two of the valve ports, and controls the opening degree of the valve ports when the flow channel connects at least three of the valve ports.

[0008] According to some embodiments of this utility model, the valve core is provided with a first limiting rib, and the cover plate is provided with a second limiting rib, wherein the first limiting rib and the second limiting rib selectively abut against each other.

[0009] According to some embodiments of the present invention, the notch is provided with a flow guiding slope, the flow guiding slope is disposed in the middle of the notch, and the flow guiding slope faces the valve port.

[0010] According to some embodiments of the present invention, a first guide portion is provided on the valve body, and a second guide portion is provided on the lower side of the valve core, with the first guide portion and the second guide portion providing guiding cooperation.

[0011] According to some embodiments of the present invention, the multi-way valve further includes: a drive module, the drive module being disposed above the cover plate, a rotating shaft being disposed at the upper end of the valve core, the drive module and the rotating shaft being connected in a transmission manner, and the drive module driving the valve core to rotate within the receiving cavity.

[0012] According to some embodiments of the present invention, the cover plate is provided with a first limiting flange, the lower side of the drive module is provided with a limiting protrusion, the limiting protrusion is fitted inside the first limiting flange; and the multi-way valve further includes: a first sealing member, the first sealing member being sandwiched between the rotating shaft and the limiting protrusion.

[0013] According to some embodiments of the present invention, a second limiting flange is provided on the lower side of the cover plate, and the multi-way valve further includes a second sealing element, which is sandwiched between the second limiting flange and the rotating shaft.

[0014] According to some embodiments of the present invention, at least one first limiting part is provided on the cover plate, and at least one second limiting part is provided on the valve body, wherein at least one first limiting part and at least one second limiting part are in a limiting cooperation.

[0015] According to some embodiments of the present invention, the valve body defines a plurality of liquid ports, which are respectively connected to a plurality of valve ports; and the multi-way valve further includes a plurality of third sealing elements, which are respectively disposed at the plurality of liquid ports.

[0016] According to some embodiments of the present invention, the third sealing element includes a sealing portion and a guiding portion, the sealing portion and the guiding portion being connected to each other, the sealing portion abutting against the end face around the liquid port, and the guiding portion having a guiding slope on the side facing the valve core, the valve core and the guiding slope cooperating with each other.

[0017] This utility model further proposes a secondary water tank assembly.

[0018] According to a second aspect of the present invention, a secondary water tank assembly includes: a secondary water tank, a flow channel cover plate provided on one side of the secondary water tank, and a coolant flow channel provided inside the flow channel cover plate; a water pump, the water pump being disposed on the flow channel cover plate and communicating with the coolant flow channel; and a multi-way valve, the multi-way valve being disposed on the flow channel cover plate and communicating with the coolant flow channel.

[0019] This utility model also proposes a thermal management system.

[0020] A thermal management system according to a third aspect of the present invention includes: the auxiliary water tank assembly.

[0021] As can be seen from the above technical solution, the present invention has the following beneficial effects: the central angle corresponding to the notch is greater than or equal to 720° divided by the number of valve ports and less than 900° divided by the number of valve ports; the notch can connect at least two valve ports; and when the flow channel connects at least three of the valve ports, the opening degree of the valve ports can be controlled. For example, when there are four valve ports, the central angle corresponding to the notch is greater than 180 degrees, so the notch can connect at least two valve ports, and when the flow channel connects at least three of the valve ports, the opening degree of the valve ports can be controlled; as another example, when there are five notches, the central angle corresponding to the notch is greater than 144°, so the notch can connect at least two valve ports, and when the flow channel connects at least three of the valve ports, the opening degree of the valve ports can be controlled.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a structural schematic diagram of the auxiliary water tank assembly according to an embodiment of the present utility model;

[0025] Figure 2 This is a structural schematic diagram of one of the multi-way valves according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of another multi-way valve according to an embodiment of the present utility model;

[0027] Figure 4 This is an exploded view of one of the multi-way valves according to an embodiment of the present utility model;

[0028] Figure 5 This is an exploded view of another multi-way valve according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the valve core according to an embodiment of the present utility model;

[0030] Figure 7 This is a structural schematic diagram of one of the cover plates according to an embodiment of the present utility model;

[0031] Figure 8This is a schematic diagram of another structure of the cover plate according to an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of the valve body according to an embodiment of the present utility model;

[0033] Figure 10 This is a schematic diagram of the drive module according to an embodiment of the present utility model;

[0034] Figure 11 This is a cross-sectional view of the third sealing element according to an embodiment of the present utility model.

[0035] Figure label:

[0036] 1000, Auxiliary water tank assembly;

[0037] 100. Multi-way valve;

[0038] 10. Cover plate; 11. Second limiting rib; 12. First limiting flange; 13. Second limiting flange; 14. First limiting part; 15. First limiting step; 16. Support column;

[0039] 20. Valve body; 22. Liquid inlet; 23. Receiving cavity; 24. First guide part; 25. Second limiting part; 26. Second limiting step;

[0040] 30. Valve core; 31. Notch; 32. First limiting rib; 33. Guide slope; 34. Second guide section; 35. Rotating shaft;

[0041] 40. Drive module; 41. Limiting protrusion;

[0042] 51. First seal; 52. Second seal; 53. Third seal; 54. Sealing part; 55. Guide part;

[0043] 61. First valve port; 62. Second valve port; 63. Third valve port; 64. Fourth valve port;

[0044] 200, Auxiliary water tank; 210, Flow channel cover; 300, Water pump; 400, Temperature sensor. Detailed Implementation

[0045] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0046] The following is for reference. Figures 1-11 The present invention describes a multi-way valve 100 according to an embodiment of the present invention, and also proposes a secondary water tank assembly 1000, and further proposes a thermal management system.

[0047] Reference Figures 2-5 As shown, the multi-way valve 100 of this utility model embodiment includes: a cover plate 10, a valve body 20, and a valve core 30. This utility model embodiment uses a four-way valve as an example; of course, the multi-way valve 100 can be a three-way valve, a five-way valve, or even more.

[0048] The cover plate 10 is placed on the valve body 20, and a receiving cavity 23 is formed between the valve body 20 and the cover plate 10. The valve body 20 is provided with multiple valve ports that communicate with the receiving cavity 23.

[0049] like Figure 6 As shown, the valve core 30 is disposed in the receiving cavity 23. The valve core 30 has a notch 31 in the circumferential direction. The notch 31, the cover plate 10, and the valve body 20 constitute a flow channel. The flow channel selectively connects two valve ports or three valve ports, and controls the opening degree of the valve ports when the flow channel connects three valve ports.

[0050] The multi-way valve 100 is mainly used in the auxiliary water tank assembly 1000 to connect and disconnect the coolant in the entire thermal management system flow channel. The valve core 30 rotates inside the receiving cavity 23 of the valve body 20, so that the four-way valve can quickly and automatically switch between multiple working modes, thereby controlling the connection and disconnection of each flow channel.

[0051] In addition, the multi-way valve 100 not only has good sealing performance but also facilitates subsequent maintenance and inspection, and can be replaced individually. Based on the real-time coolant temperature feedback from the temperature sensor 400, the multi-way valve 100 automatically and quickly switches between four flow modes to ensure smooth circulation of coolant between the plate heat exchanger, motor radiator, auxiliary water tank 200, powertrain, and electric water pump 300, allowing the motor, battery, and other components to operate at a suitable and efficient operating temperature during vehicle operation.

[0052] Furthermore, the projection of the notch onto the valve body is arc-shaped, with a central angle α corresponding to the arc. α satisfies the relationship: 180° ≤ α < 225°. That is, the valve core 30 rotates within the receiving cavity 23, and the notch 31 can selectively connect two or three valve ports. When the flow channel connects two valve ports, the two valve ports are interconnected; when the flow channel connects three valve ports, all three valve ports are interconnected. By adjusting the angle of the valve core 30 within the receiving cavity 23, the opening degree of the valve ports can be adjusted.

[0053] Specifically, when there are four valve ports, and the central angle corresponding to notch 31 is set between 180° and 225°, notch 31 can connect not only two valve ports but also all three valve ports. That is, when the central angle corresponding to notch 31 is greater than or equal to 225°, notch 31 will not be able to connect only two valve ports. Similarly, when the central angle corresponding to notch 31 is less than 180°, notch 31 will not be able to connect all three valve ports.

[0054] For example, when there are five valve ports, if the central angle corresponding to notch 31 is set between 144° and 180°, notch 31 can connect not only two valve ports but also three valve ports. That is, when the central angle corresponding to the notch is greater than or equal to 180°, notch 31 will not be able to connect only two valve ports. Similarly, when the central angle corresponding to notch 31 is less than 144°, notch 31 will not be able to connect three valve ports.

[0055] Furthermore, the valve core controls the valve port opening logic as follows: When the flow channel connects to three valve ports, one valve port is in fully open mode, and the other two valve ports are in half-open mode. At this time, the opening of the other two valve ports can be controlled by rotating the valve core. That is, rotating the valve core increases the opening of one valve port and decreases the opening of the other valve port, thereby achieving the effect of adjusting the valve port opening.

[0056] Therefore, the central angle corresponding to the notch 31 is greater than or equal to 720° divided by the number of valve ports and less than 900° divided by the number of valve ports. The notch 31 can connect at least two valve ports, and can control the opening degree of the valve ports when the flow channel connects at least three of the valve ports.

[0057] Combination Figure 6 and Figure 8 As shown, the valve core 30 is provided with a first limiting rib 32, and the cover plate 10 is provided with a second limiting rib 11. The first limiting rib 32 and the second limiting rib 11 selectively abut against each other. That is, the valve core 30 and the cover plate 10 achieve a limiting fit through the first limiting rib 32 and the second limiting rib 11, thereby achieving circumferential limiting of the valve core 30, which can prevent the valve core 30 from rotating out of position.

[0058] Specifically, the upper end of the valve core 30 is provided with a first limiting rib 32, and the upper end of the cover plate 10 is provided with a second limiting rib 11. That is, the valve core 30 and the cover plate 10 achieve a limiting fit through the first limiting rib 32 and the second limiting rib 11.

[0059] Of course, a first limiting rib 32 can be provided at the lower end of the valve core 30, and a second limiting rib 11 can be provided at the upper end of the valve body 20. That is, the valve core 30 and the valve body 20 can achieve limiting cooperation through the first limiting rib 32 and the second limiting rib 11.

[0060] The notch 31 is provided with a flow guiding slope 33, which is located in the middle of the notch 31 and faces the valve port. The flow guiding slope 33 is located radially outward from the middle of the notch 31 towards the valve core 30. That is, by providing a flow guiding slope 33 on the notch 31, the coolant can be guided and its flow resistance reduced when it flows in the flow channel.

[0061] And, such as Figure 5 and Figure 9 As shown, a first guide portion 24 is provided on the valve body 20, and a second guide portion 34 is provided on the lower side of the valve core 30. The first guide portion 24 and the second guide portion 34 are guided and cooperate with each other. That is, by providing the first guide portion 24 on the valve body 20 and the second guide portion 34 on the valve core 30, the valve core 30 can rotate on the valve body 20 through the mutual cooperation of the first guide portion 24 and the second guide portion 34, thus making the valve core 30 more stable when rotating.

[0062] The first guide portion 24 can be a rotating column, and the second guide portion 34 can be a rotating hole. That is, the rotating column is fitted into the rotating hole, so that the valve core 30 can rotate stably in the receiving cavity 23 through the cooperation of the rotating column and the rotating hole.

[0063] Reference Figures 2-4 As shown, the multi-way valve 100 also includes a drive module 40, which is disposed above the cover plate 10. A rotating shaft 35 is disposed at the upper end of the valve core 30. The drive module 40 and the rotating shaft 35 are connected in a driving relationship, and the drive module 40 drives the valve core 30 to rotate within the receiving cavity 23. That is, the drive module 40 is disposed on the cover plate 10, and the drive module 40 and the rotating shaft 35 on the valve core 30 are in a driving relationship, thereby realizing the function of the drive module 40 driving the valve core 30 to rotate within the receiving cavity 23.

[0064] Among them, reference Figure 4 As shown, the top of the cover plate 10 is provided with 3 support columns 16 for mounting and fixing the drive module 40.

[0065] Furthermore, the drive module 40 can be a power gear module consisting of a drive motor and a reducer.

[0066] Reference Figure 7 and Figure 10As shown, a first limiting flange 12 is provided on the cover plate 10, and a limiting protrusion 41 is provided on the lower side of the drive module 40. The limiting protrusion 41 is engaged within the first limiting flange 12. That is, the first limiting flange 12 is provided on the side of the cover plate 10 facing the drive module 40, and the limiting protrusion 41 is provided on the side of the drive module 40 facing the cover plate 10. The first limiting flange 12 and the limiting protrusion 41 cooperate with each other, so as to achieve the limiting engagement between the cover plate 10 and the power module.

[0067] And, such as Figure 4 and Figure 5 As shown, the multi-way valve 100 further includes a first sealing element 51, which is sandwiched between the rotating shaft 35 and the limiting protrusion 41. Thus, the first sealing element 51, sandwiched between the rotating shaft 35 and the limiting protrusion 41, can achieve a seal between the valve core 30 and the cover plate 10, and can also guide the rotating shaft 35.

[0068] A first seal 51 can be sandwiched between the rotating shaft 35 and the limiting protrusion 41, so that the first seal 51 can achieve the sealing between the rotating shaft 35 and the cover plate 10. In addition, the second seal 52 can also achieve the guiding function of the rotating shaft 35.

[0069] And, such as Figure 8 As shown, a second limiting flange 13 is provided on the lower side of the cover plate 10. The multi-way valve 100 also includes a second sealing element 52, which is sandwiched between the second limiting flange 13 and the rotating shaft 35. That is, the second limiting flange 13 is provided on the side of the cover plate 10 facing the valve core 30, and the second sealing element 52 can be sandwiched between the second limiting flange 13 and the rotating shaft 35. In this way, the second sealing element 52 can achieve a seal between the valve core 30 and the cover plate 10, and the second sealing element 52 can also guide the rotating shaft 35.

[0070] The second sealing element 52 consists of a middle guide ring and two sealing rings, which can ensure both good guiding function and excellent sealing effect.

[0071] Thus, the valve core 30 is installed in the receiving cavity 23 of the valve body 20, the second guide portion 34 of the valve core 30 is in clearance fit with the first guide portion 24 of the valve body 20, the center of the rotating shaft 35 of the valve core 30 passes through the second seal 52, the cover plate 10 and the first seal 51, and the top end of the rotating shaft 35 is connected to the drive module 40. The second seal 52 and the second guide portion 34 ensure the stable circumferential rotation of the valve core 30 in the cavity.

[0072] In addition, such as Figure 2As shown, the cover plate 10 is provided with at least one first limiting part 14, and the valve body 20 is provided with at least one second limiting part 25. The at least one first limiting part 14 and the at least one second limiting part 25 are in a limiting cooperation. That is to say, the cover plate 10 and the valve body 20 achieve limiting cooperation and foolproof positioning through the first limiting part 14 and the second limiting part 25.

[0073] For example, the first limiting part 14 can be a groove, and the second limiting part 25 can be a protrusion. The protrusion and the groove cooperate with each other, which can realize the installation between the cover plate 10 and the valve body 20 on the one hand, and facilitate the pre-positioning between the cover plate 10 and the valve body 20 on the other hand.

[0074] like Figure 9 As shown, the valve body 20 defines multiple liquid ports 22, which are connected to multiple valve ports respectively. The multi-way valve 100 also includes multiple third seals 53, which are respectively disposed at the multiple liquid ports 22. Thus, the valve body 20 is provided with a first limiting step 15 at the corresponding liquid port 22, and a second limiting step 26 is provided on the cover plate 10. Through the cooperation of the first limiting step 15 and the second limiting step 26 of the valve body 20 and the cover plate 10, the installation limiting groove of the third seal 53 can be formed, which can well ensure that the third seal 53 is always in the appropriate position during the rotation of the valve core 30.

[0075] In addition, the third seal 53 can achieve a seal between the valve core 30 and the valve body 20 and the cover plate 10, so that when the valve core 30 is connected to at least two valve ports, the remaining valve ports are in a sealed state.

[0076] Among them, reference Figure 11 As shown, the third sealing element 53 includes a sealing portion 54 and a guide portion 55, which are connected to each other. The sealing portion 54 abuts against the end face around the liquid port 22. The guide portion 55 has a guide slope on the side facing the valve core 30, and the valve core 30 and the guide slope cooperate with each other. The sealing portion 54 abuts against the liquid port 22, ensuring that the non-connected valve ports are always sealed, thus guaranteeing the operational accuracy of the multi-way valve 100. Furthermore, the guide portion 55 on the third sealing element 53, with a guide slope on the side facing the valve core 30, ensures that the guide slope is always in contact with the valve core 30 when the valve core 30 is stationary, guaranteeing the sealing of the valve port. In motion, the guide slope effectively reduces friction between the valve core 30 and the third sealing element 53.

[0077] Specifically, the sealing part 54 is a rubber ring, and the guide part 55 is a circumferential guide block made of PTFE material. This ensures excellent sealing performance and effectively reduces the rotational friction of the valve core 30.

[0078] In addition, multiple liquid channels are provided between the multiple liquid ports 22 and the multiple valve ports. That is, multiple liquid channels are provided between the multiple liquid ports 22 and the multiple valve ports, which facilitates the change of coolant direction. Specifically, the multiple liquid ports 22 are located on the outer periphery of the valve body 20, and the multiple valve ports are located at the bottom of the valve body 20. The liquid ports 22 and the valve ports are connected together by multiple liquid channels, which facilitates the connection between the valve body 20 and the flow channel cover plate 210.

[0079] The valve body 20 and the cover plate 10 are connected together by plastic vibration welding to form a seal. Due to the extrusion vibration, the connection structure is uniform and the sealing effect is good, and the basic flow channel of the multi-way valve 100 is formed.

[0080] Reference Figure 1 As shown, the auxiliary water tank assembly 1000 of the second aspect embodiment of the present invention includes: an auxiliary water tank 200, a water pump 300 and a multi-way valve 100. A flow channel cover plate 210 is provided on one side of the auxiliary water tank 200, and a coolant flow channel is provided inside the flow channel cover plate 210. The water pump 300 is provided on the flow channel cover plate 210 and communicates with the coolant flow channel. The multi-way valve 100 is provided on the flow channel cover plate 210 and communicates with the coolant flow channel.

[0081] The multi-way valve 100 is mainly used in the auxiliary water tank assembly 1000 to connect and disconnect the coolant in the entire thermal management system flow channel. The valve core 30 is driven by the drive module 40 to rotate inside the receiving cavity 23 of the valve body 20, so that the multi-way valve 100 can quickly and automatically switch between four working modes, thereby controlling the connection and disconnection of each flow channel.

[0082] The valve body 20 has a mounting groove at its bottom, and a sealing rubber ring is installed in the mounting groove to form a seal between the valve body 20 and the flow channel cover plate 210. In addition, there are four mounting holes with embedded bushings at the four corners of the valve body 20, which can be easily and quickly installed and fixed to the flow channel cover plate 210 using screws.

[0083] Additionally, two pre-positioning holes for preventing mistaken installation are provided on the side of the mounting hole, which facilitates the positioning and installation between the valve body 20 and the flow channel cover plate 210.

[0084] In this embodiment of the utility model, taking a valve with four ports as an example, the four operating modes of the multi-way valve are described:

[0085] Mode 1: The first valve port 61 and the second valve port 62 are connected. The coolant enters directly from the first valve port 61 of the multi-way valve 100 through the water pump 300, flows out from the second valve port 62, flows to the motor radiator to cool the motor, then flows to the cooling main circuit powertrain system, and then returns to the water pump 300 to form a cycle.

[0086] Mode 2: Based on Mode 1, valve core 30 rotates 90° counterclockwise. At this time, the third valve port 63 and the second valve port 62 are connected. The coolant passes through water pump 300, temperature sensor 400, plate heat exchanger, and then enters from the third valve port 63 of multi-way valve 100. It then flows out from the second valve port 62, flows to motor radiator to cool the motor, then flows to cooling main circuit powertrain system, and then returns to water pump 300 to form a cycle.

[0087] Mode 3: Based on Mode 2, the valve core 30 rotates counterclockwise by 45° to begin flow ratio adjustment. At this time, the third valve port 63 is simultaneously connected to the fourth valve port 64 and the second valve port 62. The flow ratio adjustment ends when the valve core 30 rotates counterclockwise by 45°. In the ratio adjustment mode, the ball valve's third valve port 63 is simultaneously connected to the fourth valve port 64 and the second valve port 62. The coolant passes through the water pump 300, the temperature sensor 400, and the plate heat exchanger, and then enters from the third valve port 63 of the multi-way valve 100, while simultaneously flowing out from the fourth valve port 64 and the second valve port 62. This mode can precisely adjust the outflow ratio of the fourth valve port 64 and the second valve port 62 based on the actual feedback from the temperature sensor 400. It can achieve high-precision flow ratio adjustment function with any ratio between the fourth valve port 64 and the second valve port 62 as needed.

[0088] Mode 4: After the flow rate adjustment ends in Mode 3, the system immediately enters Mode 4. At this time, the third valve port 63 and the fourth valve port 64 are connected. The coolant passes through the water pump 300, the temperature sensor 400, and the plate heat exchanger. Then it enters from the third valve port 63 of the multi-way valve 100 and flows out from the fourth valve port 64. It flows to the cooling main circuit powertrain system and then returns to the water pump 300 to form a cycle.

[0089] Of course, the multi-port valve 100 can be used in other structures; that is, the multiple ports of the multi-port valve 100 can be connected to different structures in the thermal management system. For example, the multiple ports of the multi-port valve 100 can be connected to structures such as plate heat exchangers, heater cores, water pumps, radiators, and motor control systems.

[0090] A thermal management system according to a third aspect of the present invention includes: an auxiliary water tank assembly 1000.

[0091] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-way valve, characterized in that, include: Cover plate; A valve body, the cover plate is placed on the valve body, a receiving cavity is formed between the valve body and the cover plate, and the valve body is provided with a plurality of valve ports communicating with the receiving cavity; A valve core is disposed within the receiving cavity. The valve core has a notch in the circumferential direction. The notch and the valve body form a flow channel, which is used to connect to the valve port. The projection of the notch onto the valve body is an arc, the central angle of the arc is α, the number of valve ports is n, and α and n satisfy the relationship: 720° / n≤α<900° / n.

2. The multi-way valve according to claim 1, characterized in that, The flow channel selectively connects to at least two of the valve ports, and controls the opening degree of the valve ports when the flow channel connects to at least three of the valve ports.

3. The multi-way valve according to claim 1, characterized in that, The valve core is provided with a first limiting rib, and the cover plate is provided with a second limiting rib. The first limiting rib and the second limiting rib selectively abut against each other.

4. The multi-way valve according to claim 1, characterized in that, The notch is provided with a flow guiding slope, which is located in the middle of the notch and faces the valve port.

5. The multi-way valve according to claim 1, characterized in that, The valve body is provided with a first guide portion, and the valve core is provided with a second guide portion on its lower side, with the first guide portion and the second guide portion providing a guiding fit.

6. The multi-way valve according to claim 1, characterized in that, Also includes: A drive module is disposed above the cover plate. A rotating shaft is provided at the upper end of the valve core. The drive module and the rotating shaft are connected in a transmission manner. The drive module drives the valve core to rotate within the receiving cavity.

7. The multi-way valve according to claim 6, characterized in that, The cover plate is provided with a first limiting flange, and the lower side of the drive module is provided with a limiting protrusion, the limiting protrusion fitting within the first limiting flange; and, The multi-way valve further includes a first seal, which is sandwiched between the rotating shaft and the limiting protrusion.

8. The multi-way valve according to claim 6, characterized in that, The cover plate is provided with a second limiting flange on its lower side, and the multi-way valve further includes a second sealing element, which is sandwiched between the second limiting flange and the rotating shaft.

9. The multi-way valve according to claim 1, characterized in that, The cover plate is provided with at least one first limiting part, and the valve body is provided with at least one second limiting part, and the at least one first limiting part and the at least one second limiting part are in a limiting cooperation.

10. The multi-way valve according to claim 1, characterized in that, The valve body defines a plurality of liquid ports, and the plurality of liquid ports are respectively connected to the plurality of valve ports; as well as, The multi-way valve further includes: a plurality of third seals, which are respectively disposed at a plurality of liquid ports.

11. The multi-way valve according to claim 10, characterized in that, The third sealing element includes a sealing part and a guiding part, the sealing part and the guiding part are connected to each other, the sealing part abuts against the end face around the liquid port, and the guiding part is provided with a guiding slope on the side facing the valve core, and the valve core and the guiding slope cooperate with each other.

12. The multi-way valve according to claim 10, characterized in that, Multiple liquid channels are provided between the multiple liquid ports and the multiple valve ports.

13. A secondary water tank assembly, characterized in that, include: A secondary water tank, wherein a flow channel cover is provided on one side of the secondary water tank, and a coolant flow channel is provided inside the flow channel cover; A water pump is installed on the flow channel cover and communicates with the coolant flow channel; The multi-way valve according to any one of claims 1-12, wherein the multi-way valve is disposed on the flow channel cover and communicates with the coolant flow channel.

14. A thermal management system, characterized in that, include: The auxiliary water tank assembly as described in claim 13.

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