A multi-way valve

Abstract

The present invention relates to the field of control valve technology, and in particular to a multi-way valve. It is used to solve the problem that three-way proportional valves and two-way proportional valves require two driving devices to control, occupy a large space, are complex to control and have high costs. The driving device is connected to the first valve core in transmission, and a first matching structure is provided on the first valve core, and a second matching structure matching the first matching structure is provided on the second valve core. In the first matching state, the first valve core rotates independently, and the second valve core remains unchanged; in the second matching state, the first valve core drives the second valve core to rotate synchronously. The first valve core can rotate independently to adjust the flow of the first valve port, and can also drive the second valve core to rotate when rotating to adjust the flow of the second valve port. After the adjustment is completed, the first valve core rotates to the original position again without changing the flow of the first valve port. In this way, only one driving device is needed to drive and control the first valve core and the second valve core, which is simple to control, compact in structure and low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and in particular to a multi-way valve. Background Art

[0002] In order to improve the cruising range of electric vehicles, it is necessary to implement multiple modes such as using a coolant electric heater to heat the battery, dissipating heat from the battery and drive system through a radiator, and using waste heat from the drive system to heat the battery.

[0003] In the existing thermal management system coolant circuit, a single proportional valve cannot realize the above-mentioned multiple modes, but requires a combination of multiple proportional valves such as a three-way proportional valve and a two-way proportional valve to realize the above-mentioned multiple modes.

[0004] In the prior art, three-way proportional valves and two-way proportional valves require two drive devices for control, which takes up a large space, is complex to control and has a high cost. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a multi-way valve with simple control, compact structure and low cost.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides the following technical solutions: The embodiment of the present invention provides a multi-way valve, including a valve seat, a first valve core, a second valve core and a driving device; the driving device is in driving connection with the first valve core; the first valve core is provided with a first matching structure, the second valve core is provided with a second matching structure matching with the first matching structure, the first matching structure and the second matching structure have a first matching state and a second matching state, in the first matching state, the first valve core rotates independently, and the second valve core remains stationary, in the second matching state, the first valve core drives the second valve core to rotate synchronously; the valve seat is provided with a plurality of first valve ports corresponding to the first valve core, the first valve core is provided with a first conducting structure, the first conducting structure is used to connect at least two of the first valve ports when the first valve core rotates to a first predetermined position. The valve seat is provided with a plurality of second valve ports corresponding to the second valve core, the second valve core is provided with a second conducting structure, the second conducting structure is used to connect at least two of the second valve ports when the second valve core rotates to a second predetermined position.

[0007] Compared with the prior art, the multi-way valve provided by the embodiment of the present invention has the following advantages:

[0008] The driving device is connected to the first valve core in a transmission manner. The first valve core is provided with a first matching structure, and the second valve core is provided with a second matching structure matched with the first matching structure. The first matching structure and the second matching structure have a first matching state and a second matching state. In the first matching state, the first valve core rotates independently, and the second valve core remains unchanged; in the second matching state, the first valve core drives the second valve core to rotate synchronously. In this way, the first valve core can rotate independently, and the flow of the first valve port can be adjusted by changing the relative angle between the first valve port and the first conducting structure. When the first valve core rotates, it drives the second valve core to rotate, and the flow of the second valve port can be adjusted by changing the relative angle between the second valve port and the second conducting structure. After the adjustment is completed, the first valve core rotates to the original position again, and the flow of the first valve port is not changed. In this way, only one driving device is needed to drive and control the first valve core and the second valve core, which is simple to control, compact in structure and low in cost.

[0009] As an improvement to the multi-way valve of an embodiment of the present invention, the first mating structure includes a protruding structure arranged on the first end face of the first valve core, and the second mating structure includes a groove structure arranged on the second end face of the second valve core, the first end face and the second end face are arranged opposite to each other, and at least part of the structure of the protruding structure is located in the groove structure; a first protruding portion is arranged on the side wall of the groove structure, and the first protruding portion includes a first end face and a second end face arranged at intervals in the circumferential direction, and in the first mating state, the protruding structure does not contact the first end face and the second end face, and in the second mating state, the protruding structure abuts against the first end face or the second end face.

[0010] As a further improvement of the multi-way valve of an embodiment of the present invention, the side wall of the groove structure includes a first cylindrical surface, and the first protrusion is arranged on the first cylindrical surface; the protrusion structure includes a first cylinder and a second protrusion formed by the outer circumferential surface of the first cylinder protruding radially outward, the outer side surface of the first cylinder is located radially inside the first protrusion, and the two end surfaces of the second protrusion in the circumferential direction respectively constitute the first side surface and the second side surface; the outer circumferential surface of the second protrusion includes a second cylindrical surface, and the second cylindrical surface is adapted to the first cylindrical surface.

[0011] As a further improvement of the multi-way valve of the embodiment of the present invention, the first protrusion includes a third cylindrical surface arranged radially inward, the outer peripheral surface of the first cylinder includes a fourth cylindrical surface, and the third cylindrical surface is adapted to the fourth cylindrical surface.

[0012] As a further improvement of the multi-way valve of the embodiment of the present invention, the protruding structure includes a second column which is arranged on the first end surface of the first valve core and connected to the first column.

[0013] As a further improvement of the multi-way valve in the embodiment of the present invention, the second column is a cylinder, and the diameter of the second column is the same as the diameter of the second cylindrical surface.

[0014] As a further improvement of the multi-way valve of the embodiment of the present invention, the first conduction structure includes a first groove provided on the outer circumference of the first valve core and extending circumferentially. The second conduction structure includes a second groove provided on the outer circumference of the second valve core and extending circumferentially.

[0015] As a further improvement of the multi-way valve of an embodiment of the present invention, three first valve ports are arranged on the valve seat, and in the circumferential direction, an angle occupied by the three first valve ports is less than or equal to an angle occupied by the first groove; and / or, two second valve ports are arranged on the valve seat, and in the circumferential direction, an angle occupied by the two second valve ports is less than or equal to an angle occupied by the second groove.

[0016] As a further improvement of the multi-way valve of an embodiment of the present invention, each first valve port is connected to the first valve core through a first channel, each second valve port is connected to the second valve core through a second channel, and the first valve port and the second valve port are arranged on the same side of the valve seat.

[0017] As a further improvement of the multi-way valve in the embodiment of the present invention, the driving device includes a motor and a gear set drivingly connected to the motor, and the gear set is drivingly connected to the first valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a multi-way valve provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a first valve core provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a second valve core provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the flow path principle of the second valve core provided in an embodiment of the present invention;

[0023] Figure 5A schematic diagram of the flow path principle of the first valve core provided in an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 100: multi-way valve; 10: first valve core; 11: raised structure; 111: first side surface; 112: second side surface; 113: second cylindrical surface; 114: fourth cylindrical surface; 12: first cylinder; 13: second cylinder; 14: spline shaft; 15: first groove; 20: second valve core; 21: groove structure; 211: first cylindrical surface; 212: first end surface; 213: second end surface; 214: third cylindrical surface; 22: second groove; 30: motor; 31: worm; 32: first turbine; 33: second turbine; 34: third turbine; 35: first gear; 36: second gear. DETAILED DESCRIPTION

[0026] In order to improve the cruising range of electric vehicles, it is necessary to realize multiple modes such as heating the battery with a coolant electric heater, dissipating heat from the battery and the drive system through a radiator, and using the waste heat of the drive system to heat the battery. In order to improve the cruising range of electric vehicles, the existing thermal management system coolant circuit cannot achieve the above multiple modes with a single proportional valve, but requires a combination of multiple proportional valves such as a three-way proportional valve and a two-way proportional valve to achieve the above multiple modes. In the prior art, the three-way proportional valve and the two-way proportional valve require two drive devices to control, which takes up a large space, is complex to control and has a high cost.

[0027] In view of the above problems, the present invention proposes a multi-way valve, wherein a driving device is connected to the first valve core in a transmission manner, a first matching structure is provided on the first valve core, and a second matching structure matching with the first matching structure is provided on the second valve core. By designing the first matching structure and the second matching structure, when the first valve core rotates alone, the flow rate of the first valve port is adjusted by changing the relative angle between the first valve port and the first conducting structure. When the first valve core rotates, it drives the second valve core to rotate, and the flow rate of the second valve port is adjusted by changing the relative angle between the second valve port and the second conducting structure. After the adjustment is completed, the first valve core rotates to its original position without changing the flow rate of the first valve port. In this way, only one driving device is needed to drive and control the first valve core and the second valve core, which is simple to control, compact in structure and low in cost.

[0028] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0029] A multi-way valve according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] See also Figure 1 , Figure 1 A schematic diagram of the structure of a multi-way valve provided in an embodiment of the present invention. The multi-way valve 100 includes a valve seat, a first valve core 10, a second valve core 20 and a driving device. The driving device is connected to the first valve core 10 in a transmission manner; a first matching structure is provided on the first valve core 10, and a second matching structure matching the first matching structure is provided on the second valve core 20. The first matching structure and the second matching structure have a first matching state and a second matching state. In the first matching state, the first valve core 10 rotates independently, and the second valve core 20 remains stationary. In the second matching state, the first valve core 10 drives the second valve core 20 to rotate synchronously.

[0031] A plurality of first valve ports corresponding to the first valve core 10 are arranged on the valve seat, and a first conducting structure is arranged on the first valve core 10, and the first conducting structure is used to connect at least two first valve ports when the first valve core 10 rotates to a first predetermined position; a plurality of second valve ports corresponding to the second valve core 20 are arranged on the valve seat, and a second conducting structure is arranged on the second valve core, and the second conducting structure is used to connect at least two second valve ports when the second valve core 20 rotates to a second predetermined position.

[0032] The driving device is in transmission connection with the first valve core 10. When the first valve core 10 rotates, the first matching structure on the first valve core 10 can drive the second valve core 20 to rotate through the second matching structure. In this way, the first valve core 10 can rotate independently, and the flow of the first valve core 10 can be adjusted by changing the corresponding angle between the first valve port and the first conductive structure. When the first valve core 10 rotates, it drives the second valve core 20 to rotate, and the flow of the second valve core 20 is adjusted by changing the corresponding angle between the second valve port and the second conductive structure. The first valve core 10 then rotates to its original position without changing the flow of the first valve core 10. Only one driving device is needed to drive and control the first valve core 10 and the second valve core 20, which is simple to control, compact in structure and low in cost.

[0033] The first matching structure and the second matching structure can be set to any structure that meets the above requirements. In an optional embodiment, refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of a first valve core provided in an embodiment of the present invention; Figure 3A schematic diagram of the structure of the second valve core provided in an embodiment of the present invention. The first matching structure includes a protrusion structure 11 disposed on the first end face 212 of the first valve core 10, and the second matching structure includes a groove structure 21 disposed on the second end face 213 of the second valve core 20. The first end face 212 and the second end face 213 of the first valve core 10 are disposed opposite to each other, and at least part of the structure of the protrusion structure 11 is located in the groove structure 21.

[0034] In an optional embodiment, a first protrusion is provided on the side wall of the groove structure 21, and the first protrusion includes a first end face 212 and a second end face 213 spaced apart in the circumferential direction. In the first mating state, the protrusion structure 11 does not contact the first end face 212 and the second end face 213, so that the first valve core 10 can rotate independently in the groove structure. In the second mating state, the protrusion structure 11 abuts against the first end face 212 or the second end face 213, so that the first valve core 10 can drive the second valve core 20 to rotate synchronously. The first end face 212 and the second end face 213 are provided to better realize the first mating state and the second mating state.

[0035] The outer peripheral surface of the protrusion structure 11 includes a first side surface 111 and a second side surface 112 which are spaced apart in the circumferential direction, and a first protrusion is provided on the side wall of the groove structure 21, and the first protrusion includes a first end surface 212 and a second end surface 213 which are spaced apart in the circumferential direction; when the protrusion structure 11 rotates along the first direction until the first side surface 111 abuts against the first end surface 212, the second valve core 20 can be driven to rotate synchronously with the first valve core 10 along the first direction; when the protrusion structure 11 rotates along the second direction until the second side surface 112 abuts against the second end surface 213, the second valve core 20 can be driven to rotate synchronously with the first valve core 10 along the second direction. When the first valve core 10 drives the second valve core 20 to rotate, the protrusion structure 11 and the groove structure 21 can better cooperate.

[0036] Preferably, the side wall of the groove structure 21 includes a first cylindrical surface 211, and the first protrusion is arranged on the first cylindrical surface 211. The protrusion structure 11 includes a first cylinder 12 and a second protrusion formed by the outer peripheral surface of the first cylinder 12 protruding radially outward, the outer side surface of the first cylinder 12 is located radially inside the first protrusion, and the two end surfaces of the second protrusion in the circumferential direction respectively constitute the first side surface 111 and the second side surface 112; the outer peripheral surface of the second protrusion includes a second cylindrical surface 113, and the second cylindrical surface 113 is adapted to the first cylindrical surface 211. The second protrusion structure 11 is arranged on the protrusion structure 11, so that the axial force is better transmitted to the second valve core 20 when the first valve core 10 rotates, and the application of force is convenient.

[0037] Further preferably, the first protrusion includes a third cylindrical surface 214 arranged radially inwardly, the outer peripheral surface of the first cylinder 12 includes a fourth cylindrical surface 114, and the third cylindrical surface 214 is adapted to the fourth cylindrical surface 114. This design ensures that when the first valve core 10 drives the second valve core 20 to rotate, the rotation stability is guaranteed.

[0038] In an optional embodiment, the protruding structure 11 includes a second column 13 disposed on the first end surface 212 of the first valve core 10 and connected to the first column 12. The second column 13 allows the first valve core 10 to maintain a certain distance from the second valve core 20, thereby reducing the contact area, and when the first valve core 10 rotates, the friction resistance is reduced, thereby improving the transmission efficiency.

[0039] Preferably, in order to further improve the transmission efficiency, a first circular hole is arranged at the center of the protruding structure 11 of the first valve core 10, and a second circular hole is arranged at the center of the groove structure 21 of the second valve core 20. The transmission shaft connects the first circular hole and the second circular hole, so that when the first valve core 10 drives the second valve core 20 to rotate, the friction resistance is reduced and the transmission efficiency is improved.

[0040] The second cylinder 13 may be in the shape of a square cylinder or a cylinder. For ease of processing, the second cylinder 13 is preferably a cylinder. The diameter of the second cylinder 13 is the same as the diameter of the second cylindrical surface 113, which can relatively avoid the bottom surface of the second cylinder 13 from contacting the second valve core 20 and reduce friction resistance.

[0041] It should be noted that the first direction is the direction in which the first side surface 111 of the first valve core 10 rotates toward the first end surface 212 of the second valve core 20 ; the second direction is the direction in which the second side surface 112 of the first valve core 10 rotates toward the second end surface 213 of the second valve core 20 .

[0042] There are two situations when the first valve core 10 drives the second valve core 20 to rotate synchronously. In the first situation, when the protruding structure 11 of the first valve core 10 rotates along the first direction until the first side surface 111 abuts against the first end surface 212, the second valve core 20 can be driven to rotate synchronously with the first valve core 10 along the first direction; in the second situation, when the protruding structure 11 of the first valve core 10 rotates along the second direction until the second side surface 112 abuts against the second end surface 213, the second valve core 20 can be driven to rotate synchronously with the first valve core 10 along the second direction.

[0043] When the first valve core 10 rotates alone, there are also two situations. In the first situation, when the protruding structure 11 of the first valve core 10 abuts against the first end face 212 from the first side face 111, and rotates along the second direction until the second side face 112 abuts against the second end face 213, the first valve core 10 rotates alone, and the second valve core 20 remains in its original state. In the second situation, when the protruding structure of the first valve core 10 abuts against the second end face 213 from the second side face 112, and rotates along the first direction until the first side face 111 abuts against the first end face 212, the first valve core 10 rotates alone, and the second valve core 20 remains in its original state.

[0044] In order to realize the connection of the pipeline channel, a plurality of first valve ports corresponding to the first valve core 10 are arranged on the valve seat, and a first conduction structure is arranged on the first valve core 10, and the first conduction structure is used to connect at least two first valve ports when the first valve core 10 rotates to the first predetermined position; a plurality of second valve ports corresponding to the second valve core 20 are arranged on the valve seat, and a second conduction structure is arranged on the second valve core, and the second conduction structure is used to connect at least two second valve ports when the second valve core 20 rotates to the second predetermined position. The first conduction structure and the second conduction structure are respectively arranged on the first valve core 10 and the second valve core 200, respectively realizing the connection of the plurality of first valve ports and the plurality of second valve ports. The first conduction structure and the second conduction structure are arranged to make the structure of the multi-way valve 100 more compact and reduce the space.

[0045] The first conductive structure and the second conductive structure can be set to any structure that can meet the requirements. For the convenience of processing, in an optional embodiment, the first conductive structure includes a first groove 15 arranged on the outer peripheral surface of the first valve core 10 and extending in the circumferential direction; the second conductive structure includes a second groove 22 arranged on the outer peripheral surface of the second valve core 20 and extending in the circumferential direction.

[0046] A plurality of first valve ports corresponding to the first valve core 10 are arranged on the valve seat. In a specific embodiment, three first valve ports are arranged on the valve seat. In the circumferential direction, the angle occupied by the three first valve ports is less than or equal to the angle occupied by the first groove 15, so that the three first valve ports can be connected and closed.

[0047] The valve seat is provided with a plurality of second valve ports corresponding to the second valve core 20. The valve seat is provided with two second valve ports. In the circumferential direction, the angle occupied by the two second valve ports is less than or equal to the angle occupied by the second groove 22, so that the two second valve ports can be connected and closed.

[0048] In an optional embodiment, each first valve port is connected to the first valve core 10 through a first channel, each second valve port is connected to the second valve core 20 through a second channel, and the first valve port and the second valve port are arranged on the same side of the valve seat. The first valve port and the second valve port are centrally arranged on the same side of the valve seat, which is convenient for pipeline arrangement and reduces space.

[0049] In an optional implementation, the first channels are channel a, channel b and channel c, channel a is the inlet channel, channel b and channel c are the outlet channels, and channel b is located between channel a and channel c. The angle between the first channels is not limited, and in order to avoid interference between the three first channels, the angle between the three first channels is 90 degrees; the second channels are channel e and channel f, and the angle between two second channels is 90 degrees.

[0050] See also Figure 4 and Figure 5 , Figure 4 A schematic diagram of the flow path principle of the second valve core provided in an embodiment of the present invention; Figure 5 Schematic diagram of the flow path principle of the first valve core provided in an embodiment of the present invention. The first valve core 10 cooperates with the valve seat to be equivalent to a three-way proportional valve, and the second valve core 20 cooperates with the valve seat to be equivalent to a two-way proportional valve. Figure 4 and Figure 5 The first valve core 10 is to realize the function of a channel inlet and b channel outlet; or a channel inlet and c channel outlet; the second valve core 20 is to realize the function of e channel inlet and f channel outlet. The multi-way valve 100 realizes the functions of a three-way proportional valve and a two-way proportional valve, and realizes the purpose of five channels through a driving device, which is highly integrated and compact.

[0051] Preferably, the a channel, b channel and c channel of the first valve core 10 and the e channel and f channel of the second valve core 20 are centrally arranged on one mounting surface of the valve seat, which is aesthetically pleasing and reduces space.

[0052] The angle occupied by the three first valve ports is less than or equal to the angle occupied by the first groove 15, and the angle occupied by the two second valve ports is less than or equal to the angle occupied by the second groove 22. Preferably, the angle occupied by the first groove 15 is 180 degrees, and the angle occupied by the second groove 22 is 180 degrees.

[0053] In the initial state, the first side surface 111 of the first valve core 10 abuts against the first end surface 212 of the second valve core 20, the a channel and the c channel are located at the first groove 15, the b channel is located on the outer circumference of the first valve core 10, the first valve core 10 blocks the b channel, and the a channel is connected to the c channel. The e channel is located on the outer circumference of the second valve core 20, the second valve core 20 blocks the e channel, the f channel is located at the second groove 22, and the e channel and the f channel are in a closed state.

[0054] In the second state, based on the initial state, when the first valve core 10 rotates 45 degrees in the second direction, the second valve core 20 does not move, the a channel and the b channel are located at the first groove 15, the c channel is located on the outer circumference of the first valve core 10, the first valve core 10 blocks the c channel, and the a channel is connected to the b channel. The e channel and the f channel of the second valve core 20 remain in their original state, and the e channel and the f channel are still in a closed state.

[0055] In the third state, based on the second state, when the first valve core 10 drives the second valve core 20 to rotate 45 degrees synchronously with the first valve core 10 along the first direction, the e channel and the f channel of the second valve core 20 are located at the second groove 22, and the e channel and the f channel are connected. The c channel and half of the a channel of the first valve core 10 are located at the first groove 15, the opening of the a channel is 50%, and the b channel is located on the outer peripheral surface of the first valve core 10, and the first valve core 10 blocks the b channel.

[0056] In the fourth state, based on the third state, the first valve core 10 rotates 45 degrees in the second direction and returns to the initial state, and the second valve core 20 does not move. The a channel and the c channel of the first valve core 10 are located at the first groove 15, and the b channel is located on the outer peripheral surface of the first valve core 10. The first valve core 10 blocks the b channel, and the a channel is connected to the c channel. The e channel and the f channel of the second valve core 20 remain unchanged, and the e channel is connected to the f channel.

[0057] It should be noted that the rotation of the first valve core 10 can be adjusted to adjust the opening of channel a, channel b and channel c by 0-100%, and the first valve core 10 drives the second valve core 20 to rotate to adjust the opening of channel e and channel f by 0-100%. For example, the opening of channel a can be changed by adjusting the area corresponding to the first groove 15. When the entire channel a corresponds to the first groove 15, the opening of channel a is 100%; when half of the channel a corresponds to the first groove 15, the opening of channel a is 50%; when the entire channel a is blocked by the first valve core 10, the opening of channel a is 0.

[0058] Preferably, the first valve core 10 and the second valve core 20 are produced by injection molding, which has a fast production speed and high efficiency and can easily form parts with complex shapes.

[0059] The driving device can be set to any structure that can drive the first valve core 10 to rotate. In an optional embodiment, the driving device includes a motor 30 and a gear set connected to the motor 30, and the gear set is connected to the first valve core 10. A worm 31 is arranged on the shaft of the motor 30, and the gear set includes a first turbine 32 matched with the worm 31, a second turbine 33 meshed with the first turbine 32, a third turbine 34 meshed with the second turbine 33, a first gear 35 connected to the bottom of the third turbine 34, and a second gear 36 meshed with the first gear 35. The central axes of the first turbine 32, the second turbine 33, the third turbine 34, the first gear 35 and the second gear 36 in the gear set are parallel to each other and are all in the vertical direction, and the central axis of the first worm 31 is perpendicular to the central axis of the first turbine 32. The worm 31 on the shaft of the motor 30 rotates, and the first valve core 10 is driven to rotate through the transmission of the gear set, thereby ensuring the stability of the transmission.

[0060] The type of the motor 30 is not limited. To simplify control and ensure accuracy, preferably, the motor 30 is a stepper motor 30 or a servo motor 30 .

[0061] In order to achieve the connection between the first valve core 10 and the second gear 36 , preferably, a first connecting portion is provided on the first valve core 10 , and a second connecting portion is provided on the second gear 36 , and the first connecting portion can form a detachable connection with the second connecting portion.

[0062] Further preferably, the first connecting portion includes a spline shaft 14 disposed on the second end surface 213 of the first valve core 10 , and the second connecting portion includes a spline sleeve disposed on the second gear 36 , and the spline shaft 14 and the spline sleeve form a detachable connection.

[0063] In an optional embodiment, the multi-way valve 100 can be used in the coolant circuit of the thermal management system of an electric vehicle, so that the electric vehicle has the advantages of being lighter and cost-saving. Compared with an electric vehicle that requires two drive devices to control a three-way proportional valve and a two-way proportional valve, an electric vehicle using the multi-way valve 100 can save an average of 100 yuan per vehicle and can reduce 100g per vehicle.

[0064] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0065] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-way valve, characterized in that: It comprises a valve seat, a first valve core, a second valve core and a driving device; the driving device, the first valve core and the second valve core are sequentially stacked along the axial direction; The driving device is only in transmission connection with the first valve core; The first valve core is provided with a first matching structure, and the second valve core is provided with a second matching structure matching with the first matching structure; the first matching structure and the second matching structure have a first matching state and a second matching state, in which the first valve core rotates independently and the second valve core remains stationary, and in the second matching state, the first valve core drives the second valve core to rotate synchronously; The first matching structure includes a protruding structure arranged on a first end surface of the first valve core, and the second matching structure includes a groove structure arranged on a second end surface of the second valve core, at least part of the protruding structure is located in the groove structure, and the first end surface is arranged opposite to the second end surface; A first protrusion is provided on the side wall of the groove structure, the first protrusion includes a first end face and a second end face which are spaced apart in the circumferential direction, in the first mating state, the protrusion structure does not contact the first end face or the second end face, and in the second mating state, the protrusion structure abuts against the first end face or the second end face; Wherein, the side wall of the groove structure includes a first cylindrical surface, and the first protrusion is arranged on the first cylindrical surface; The protrusion structure comprises a first column and a second protrusion formed by the outer circumference of the first column protruding radially outward, the outer side surface of the first column is located radially inward of the first protrusion, and both end surfaces of the second protrusion in the circumferential direction constitute a first side surface and a second side surface respectively; The outer peripheral surface of the second protrusion includes a second cylindrical surface, and the second cylindrical surface is adapted to the first cylindrical surface; The first protrusion includes a third cylindrical surface arranged radially inward, the outer peripheral surface of the first cylinder includes a fourth cylindrical surface, and the third cylindrical surface is adapted to the fourth cylindrical surface; The protruding structure includes a second column disposed on the first end surface of the first valve core and connected to the first column; The second cylinder is a cylinder, and the diameter of the second cylinder is the same as the diameter of the second cylindrical surface; The valve seat is provided with a plurality of first valve ports corresponding to the first valve core, and the first valve core is provided with a first conducting structure, and the first conducting structure is used to connect at least two of the first valve ports when the first valve core rotates to a first predetermined position; The valve seat is provided with a plurality of second valve ports corresponding to the second valve core, and the second valve core is provided with a second conducting structure, and the second conducting structure is used to connect at least two of the second valve ports when the second valve core rotates to a second predetermined position.

2. A multi-way valve according to claim 1, characterized in that: The first conducting structure comprises a first groove which is arranged on the outer peripheral surface of the first valve core and extends in the circumferential direction; The second conducting structure includes a second groove which is arranged on the outer peripheral surface of the second valve core and extends along the circumferential direction.

3. A multi-way valve according to claim 2, characterized in that: The valve seat is provided with three first valve ports, and in the circumferential direction, an angle occupied by the three first valve ports is less than or equal to an angle occupied by the first groove; and / or, The valve seat is provided with two second valve ports, and in the circumferential direction, an angle occupied by the two second valve ports is smaller than or equal to an angle occupied by the second groove.

4. A multi-way valve according to claim 3, characterized in that: Each of the first valve ports is connected to the first valve core via a first channel, each of the second valve ports is connected to the second valve core via a second channel, and the first valve ports and the second valve ports are arranged on the same side of the valve seat.

5. A multi-way valve according to claim 1, characterized in that: The driving device includes a motor and a gear set drivingly connected to the motor, and the gear set is drivingly connected to the first valve core.

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