Valve element, multi-channel valve, heat management system and vehicle

Abstract

The utility model relates to a valve element, a multi-channel valve, a heat management system and a vehicle. At least part of the peripheral surface of the valve element is a sealing matching part, the valve element is in sealing fit with the valve seat through the sealing matching part, the valve element is provided with a plurality of inner flow channels which are not communicated with one another, each inner flow channel comprises a main body part and an opening part formed in the sealing matching part, and the main body parts penetrate through the valve element and are communicated with the opening parts; the opening portions of the at least two inner flow channels are alternately arranged in the circumferential direction of the valve element, and any two of the opening portions of the multiple inner flow channels are at least partially overlapped in the axial direction of the valve element. According to the valve element, any two of the opening parts of the multiple inner flow channels are at least partially overlapped in the axial direction of the valve element, so that the size of the sealing matching part in the axial direction of the valve element can be reduced, and the resistance of the valve element rotating relative to the valve seat can be reduced.

Description

Technical Field

[0001] This application relates to the field of switching valve technology, and in particular to a valve core, a multi-channel valve, a thermal management system, and a vehicle. Background Technology

[0002] The thermal management system of new energy vehicles is used to regulate the temperature of managed components such as the battery pack, powertrain, control module, and passenger compartment. Based on the needs of multiple managed components, a multi-channel valve is used to switch between different flow paths. In the multi-channel valve, the valve core is cylindrical and has an inner flow channel connecting to the outer flow channel of the valve seat. At least a portion of the outer circumferential surface of the valve core is a sealing mating part, and the opening of the inner flow channel is located within this sealing mating part. The valve core seals against the valve seat through the sealing mating part to prevent fluid leakage when the inner and outer flow channels are connected.

[0003] In existing technologies, to meet specific operating modes, the openings alternate in the circumferential direction, which necessitates the layering of the internal flow channels. In some products, one part of the internal flow channel and another part of the internal flow channel are spaced apart in the axial direction of the valve core. Correspondingly, multiple openings are also spaced apart in the axial direction of the valve core, resulting in a wide distribution area of ​​multiple openings in the axial direction of the valve core, which leads to greater resistance to the rotation of the valve core relative to the valve seat. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a valve core, a multi-channel valve, a thermal management system, and a vehicle, which reduces the axial dimension of the sealing mating part of the valve core, thereby reducing the resistance to the rotation of the valve core relative to the valve seat.

[0005] On one hand, this application provides a valve core for use in a multi-channel valve. At least a portion of the outer circumferential surface of the valve core is a sealing mating part, and the valve core is sealed to the valve seat of the multi-channel valve through the sealing mating part. The valve core has multiple non-communicating internal flow channels, each internal flow channel including a main body and an opening disposed in the sealing mating part. The main body penetrates the valve core and communicates with the opening. At least two openings of the internal flow channels are alternately arranged circumferentially on the valve core, and any two of the openings of the multiple internal flow channels at least partially overlap axially on the valve core.

[0006] In one embodiment of this application, any two of the openings of the plurality of internal flow channels completely overlap in the axial direction of the valve core.

[0007] In one embodiment of this application, at least two internal flow channels include a first internal flow channel and a second internal flow channel;

[0008] Along the extension path of the first inner flow channel, the position of the first inner flow channel in the axial direction of the valve core remains unchanged;

[0009] Along the extension path of the second inner flow channel, at least a portion of the second inner flow channel gradually moves away from the first inner flow channel in the axial direction of the valve core, and then gradually moves closer to the first inner flow channel, so that the second inner flow channel bypasses the first inner flow channel.

[0010] In one embodiment of this application, the main body of the second inner flow channel includes a curved section and a straight section. The curved section is at least a portion of the second inner flow channel; the straight section is disposed at the end of the curved section, extends radially in the valve core, and has an opening connected to the end of the straight section opposite to the curved section.

[0011] In one embodiment of this application, the curved section includes an inner wall and an outer wall, which are respectively arc-shaped and tangent to the extension of the straight section, and / or the inner wall is closer to the first inner flow channel in the axial direction of the valve core than the outer wall.

[0012] In one embodiment of this application, the valve core includes a valve body and a cap. The valve body forms a first internal flow channel; the cap and the valve body are axially joined to the valve core and together define a second internal flow channel.

[0013] On the other hand, this application also provides a multi-channel valve, which includes a valve seat and a valve core as described above, the valve core being rotatably disposed within the valve seat.

[0014] In one embodiment of this application, the multi-channel valve further includes a sealing element disposed between the valve seat and the valve core, and abutting against both the valve seat and the valve core respectively. The portion of the outer peripheral surface that abuts against the sealing element is a sealing mating part. The valve seat includes an outer flow channel, and the sealing element includes a through port that connects the outer flow channel and the inner flow channel.

[0015] On the other hand, this application also provides a thermal management system, which includes any of the above-mentioned multi-channel valves.

[0016] Furthermore, this application also provides a vehicle that includes the aforementioned thermal management system.

[0017] The technical solution described in this application has the following advantages over the prior art:

[0018] This application provides a valve core in which at least two openings of internal flow channels are alternately arranged in the circumferential direction to meet the specific working mode of a multi-channel valve. Any two of the openings of the multiple internal flow channels overlap at least partially in the axial direction of the valve core, thereby reducing the distribution area of ​​the openings of the multiple internal flow channels in the axial direction of the valve core. This allows the size of the sealing mating part in the axial direction of the valve core to be reduced, thereby reducing the resistance of the valve core to rotation relative to the valve seat. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of the valve core in one embodiment of this application;

[0021] Figure 2 yes Figure 1 The bottom view of the valve core shown;

[0022] Figure 3 yes Figure 1 Sectional view E1-E1 in the middle;

[0023] Figure 4 yes Figure 3 A simplified view;

[0024] Figure 5 yes Figure 3 Sectional view E2-E2 in the middle;

[0025] Figure 6 yes Figure 1 The valve core shown is a three-dimensional exploded view from a first-person perspective;

[0026] Figure 7 yes Figure 1 The valve core shown is a 3D exploded view from a second perspective.

[0027] Figure 8 This is a three-dimensional structural schematic diagram of a multi-channel valve according to an embodiment of this application;

[0028] Figure 9 yes Figure 8 The exploded 3D view of the multi-channel valve shown.

[0029] Figure 10 yes Figure 8 The front view of the multi-channel valve shown;

[0030] Figure 11 yes Figure 10 Sectional view E3-E3 in the middle;

[0031] Figure 12 yes Figure 11 Sectional view E4-E4 in the diagram.

[0032] Explanation of reference numerals in the accompanying drawings: 10-Valve seat; 110-Outer flow channel; 120-Inner circumferential surface; 130-Receiving cavity; 140-Mounting port; 20-Valve core; 210-Valve body; 211-Groove; 220-Sealing piece; 230-Inner flow channel; 231-First inner flow channel; 232-Second inner flow channel; 240-Opening; 251-Inner side wall; 252-Outer side wall; 253-Top wall; 254-Bottom wall; 261-First edge; 262-Second edge; 263-Third edge; 264-Fourth edge; 270-Main body; 271-Straight section; 272-Bent section; 280-Outer peripheral surface; 281-Sealing mating part; 30-Actuator; 40-Seal; 410-Conductor port; 50-Sealing gasket; 60-Cover; 70-Sealing ring; L-Rotation axis; Z-Axial; D1-Circumferential; D2-Radial. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Please see Figures 1 to 4 . Figure 1 This is a front view of valve core 20. Figure 2 yes Figure 1 The bottom view of the valve core 20 is shown. Figure 3 yes Figure 1 Sectional view E1-E1 in the diagram. Figure 3 The invisible portion of the inner flow channel 230 is shown with dashed lines. Figure 4 yes Figure 3 A simplified view, Figure 4 Only the second internal flow channel 232 is shown in the image.

[0035] This application provides a valve core for use in a multi-channel valve. At least a portion of the outer peripheral surface 280 of the valve core 20 is a sealing mating part 281, through which the valve core 20 is sealed to the valve seat 10 of the multi-channel valve (described in detail below). Specifically, the outer peripheral surface 280 surrounds the rotation axis L of the valve core 20. Figure 1 The part outlined by the dashed line is the sealing mating part 281.

[0036] The valve core 20 has multiple non-communicating internal flow channels 230. Each internal flow channel 230 includes a main body 270 and an opening 240 provided in the sealing mating part 281. The main body 270 passes through the valve core 20 and communicates with the opening 240.

[0037] At least two openings 240 of the inner flow channels 230 are alternately arranged in the circumferential direction D1 of the valve core 20. Any two of the openings 240 of the multiple inner flow channels 230 at least partially overlap in the axial direction Z of the valve core 20; that is, the orthogonal projections of any two of the openings 240 of the multiple inner flow channels 230 on the rotation axis L of the valve core 20 at least partially overlap. Figure 1 (Complete overlap). Specifically, the orthographic projection of the opening 240 on the rotation axis L refers to the projection of the opening 240 onto the rotation axis L along the radial direction of the valve core 20. This projection method will "flatten" the three-dimensional opening 240 into a line segment along the rotation axis L, similar to projecting the side of a cylinder onto its centerline.

[0038] For ease of description, two of the multiple internal flow channels 230 are named the first internal flow channel 231 and the second internal flow channel 232, respectively. For example... Figure 3 As shown, along the circumferential direction D1 of the valve core 20, an opening 240 of the first inner flow channel 231, an opening 240 of the second inner flow channel 232, another opening 240 of the first inner flow channel 231, and another opening 240 of the second inner flow channel 232 are sequentially arranged. The first inner flow channel 231 and the second inner flow channel 232 are spaced apart in the intersection area along the axial direction Z of the valve core 20 to avoid each other. With the axial direction Z of the valve core 20 as the projection direction, the projected portions of at least two inner flow channels 230 overlap. This arrangement allows the inner flow channels 230 on the valve core 20 to be arranged in a crisscross pattern.

[0039] In the prior art, to meet specific operating modes, the openings 240 of at least two inner flow channels 230 need to be alternately arranged in the circumferential direction D1 of the valve core 20. A multi-channel valve is a device with multiple channels and an adjustable valve structure used in fluid control systems. By changing the position of the valve core 20, the fluid switches between different channels, thereby achieving different flow paths. A specific operating mode refers to a specific inner flow channel 230 being connected to a specific outer flow channel 110 (see below) when the valve core 20 is in a predetermined position. To avoid the inner flow channels 230 from interconnecting, at least two inner flow channels 230 need to be spaced apart in the axial direction Z of the valve core 20, i.e., located at different positions in the axial direction Z of the valve core 20. In the prior art, in the axial direction Z of the valve core 20, the dimension b of the sealing mating part 281 is more than twice the dimension a of the opening 240, resulting in greater resistance to the rotation of the valve core 20 relative to the valve seat 10.

[0040] In this embodiment, any two of the openings 240 of the multiple internal flow channels 230 at least partially overlap in the axial direction Z of the valve core 20, such that the size b of the sealing mating part 281 can be less than twice the size a of the opening 240, thereby reducing the resistance of the valve core 20 to rotate relative to the valve seat 10.

[0041] Furthermore, such as Figure 1 As shown, in some embodiments, any two of the openings 240 of the multiple inner flow channels 230 completely overlap in the axial direction Z of the valve core 20. In other words, the openings 240 of the multiple inner flow channels 230 are arranged on the same circumference of the valve core 20. Alternatively, the orthogonal projections of any two of the openings 240 of the multiple inner flow channels 230 on the rotation axis L of the valve core 20 completely overlap.

[0042] Specifically, the centers of the openings 240 of the multiple internal flow channels 230 are located on the same circumference. In the illustrated embodiment, the outline of the opening 240 is generally rectangular, and the diagonals of the rectangle intersect at a point, which is named the center of the opening 240. In other embodiments, the outline of the opening 240 is generally circular, and the center of the circle is named the center of the opening 240.

[0043] The openings 240 of the multiple internal flow channels 230 on the valve core 20 are on the same circumference of the valve core 20, which further reduces the size of the sealing mating part 281 in the axial Z direction of the valve core 20, thereby reducing the resistance of the valve core 20 to rotation relative to the valve seat 10.

[0044] With the axial direction Z of the valve core 20 as the projection direction, the overlapping of the projected portions of the first inner flow channel 231 and the second inner flow channel 232 includes the following two scenarios.

[0045] Scenario 1: One of the first inner flow channel 231 and the second inner flow channel 232 avoids each other at the intersection. Along the extension path of the first inner flow channel 231, its position in the axial Z direction of the valve core 20 remains unchanged. Along the extension path of the second inner flow channel 232, at least a portion of the second inner flow channel 232 gradually moves away from the first inner flow channel 231 in the axial Z direction of the valve core 20, and then gradually moves closer to the first inner flow channel 231, so that the second inner flow channel 232 bypasses the first inner flow channel 231. Specifically, the main body 270 and the opening 240 of the first inner flow channel 231 are at the same position in the axial Z direction of the valve core 20. At least a portion of the main body 270 of the second inner flow channel 232 and the opening 240 of the second inner flow channel 232 are located at different positions in the axial Z direction of the valve core 20, and are spaced apart from the first inner flow channel 231 in the axial Z direction of the valve core 20. In other words, the position of the first inner flow channel 231 in the axial direction Z of the valve core 20 remains unchanged, while a portion of the second inner flow channel 232 is offset in the axial direction Z of the valve core 20 to avoid the first inner flow channel 231.

[0046] Scenario 2: The first inner flow channel 231 and the second inner flow channel 232 avoid each other at their intersection. Specifically, at least a portion of the main body 270 of the first inner flow channel 231 and its opening 240 are located at different positions along the axial direction Z of the valve core 20. At least a portion of the main body 270 of the second inner flow channel 232 and its opening 240 are located at different positions along the axial direction Z of the valve core 20. At least a portion of the main body 270 of the first inner flow channel 231 and at least a portion of the main body 270 of the second inner flow channel 232 are spaced apart along the axial direction Z of the valve core 20. That is, at the intersection of the first inner flow channel 231 and the second inner flow channel 232, a portion of the first inner flow channel 231 is offset to one side along the axial direction Z of the valve core 20, and a portion of the second inner flow channel 232 is offset to the other side along the axial direction Z of the valve core 20 to achieve avoidance.

[0047] In Scenario 1 above, the first inner flow channel 231 can be formed in one step using injection molding, a relatively mature process. The valve core 20 in Scenario 1 is also easier to manufacture.

[0048] The following is a detailed description of scenario one above; scenario two can be implemented by referring to this description.

[0049] Please see Figure 3 and Figure 4 In some embodiments, the main body 270 of the second inner flow channel 232 includes a curved section 272 and two straight sections 271. At least a portion of the curved section 272 is located at a different position from the opening 240 in the axial direction Z of the valve core 20, and is spaced apart from the first inner flow channel 231 in the axial direction Z of the valve core 20. The two straight sections 271 are respectively disposed at both ends of the curved section 272. The opening 240 is connected to one end of the straight section 271 opposite to the curved section 272. The straight sections 271 and the opening 240 are located at the same position in the axial direction Z of the valve core 20. Figure 4 The outline of line segment 271 is shown using a thicker line.

[0050] Specifically, in the second inner flow channel 232, two straight segments 271 extend along straight paths. More specifically, the two straight segments 271 extend radially along the valve core 20 (D2). Along the extension path of the curved segment 272, the position of the curved segment 272 in the axial direction Z of the valve core 20 gradually shifts away from the first inner flow channel 231, and then shifts closer to the first inner flow channel 231, so that the curved segment 272 bypasses the first inner flow channel 231.

[0051] Please see Figure 4 and Figure 5 . Figure 5 yes Figure 3 Sectional view E2-E2 in the diagram.

[0052] In some embodiments, the inner wall surface of the curved segment 272 includes an inner sidewall 251, an outer sidewall 252, a top wall 253, and a bottom wall 254. The inner sidewall 251 and the outer sidewall 252 are respectively arc-shaped, and the arc shape is tangent to the extension line of the straight segment 271. Alternatively, the inner sidewall 251 is tangent to the inner wall surface of each of the two straight segments 271, and the outer sidewall 252 is tangent to the inner wall surface of each of the two straight segments 271.

[0053] Specifically, the inner wall 251 is a cylindrical surface parallel to the rotation axis L. The outer wall 252 is a cylindrical surface parallel to the rotation axis L and is coaxially disposed radially outside the inner wall 251. The top wall 253 connects the inner wall 251 and the outer wall 252. The bottom wall 254 connects the inner wall 251 and the outer wall 252. The top wall 253 and the bottom wall 254 are positioned opposite each other and spaced apart along the axial direction Z of the valve core 20. With the axial direction Z of the valve core 20 as the projection direction, the projection of the curved section 272 is fan-shaped.

[0054] Therefore, after the fluid enters the second inner flow channel 232, it can smoothly change its flow direction and flow out of the second inner flow channel 232.

[0055] In some embodiments, the inner wall 251 is closer to the first inner flow channel 231 in the axial Z direction of the valve core 20 than the outer wall 252.

[0056] Specifically, the intersection of the top wall 253 and the inner wall 251 is the first edge 261. The intersection of the top wall 253 and the outer wall 252 is the second edge 262. In any cross-section of the curved section 272, the top wall 253 is inclined relative to the radial direction D2 of the valve core 20, and the first edge 261 is closer to the first inner flow channel 231 in the axial direction Z of the valve core 20 than the second edge 262. The intersection of the bottom wall 254 and the inner wall 251 is the third edge 263. The intersection of the bottom wall 254 and the outer wall 252 is the fourth edge 264. In any cross-section of the curved section 272, the bottom wall 254 is inclined relative to the radial direction D2 of the valve core 20, and the third edge 263 is closer to the first inner flow channel 231 in the axial direction Z of the valve core 20 than the fourth edge 264. This structural design allows for better fluid flow in the curved section 272.

[0057] Please see Figure 6 and Figure 7 . Figure 6 and Figure 7 These are the first and second perspective 3D exploded views of the valve core 20.

[0058] To facilitate the molding of the second inner flow channel 232, in some embodiments, multiple parts are assembled to form the second inner flow channel 232. Details are as follows.

[0059] The valve core 20 includes a valve body 210 and a cover 220. The valve body 210 forms a first internal flow channel 231. The cover 220 and the valve body 210 are joined in the axial direction Z of the valve core 20 and together define a second internal flow channel 232. Specifically, the valve body 210 has a groove 211 that opens to one side in the axial direction Z of the valve core 20, and the cover 220 and the groove 211 enclose the second internal flow channel 232.

[0060] The inner wall 251, outer wall 252, and top wall 253 are respectively provided on the valve body 210, and the bottom wall 254 is provided on the cover 220.

[0061] In one manufacturing scenario, the valve body 210 and the cap 220 are respectively formed by injection molding. During assembly, the cap 220 is connected to the valve body 210. The connection method can be welding or bonding.

[0062] In this embodiment, the outer peripheral surface 280 for sealing is provided on the valve body 210, so that the outer peripheral surface 280 has no splicing seam, which can avoid the increase of friction caused by splicing seam. In addition, the opening 240 is provided on the valve body 210, so that the opening 240 has no splicing seam, which can prevent fluid leakage caused by splicing seam at the opening 240.

[0063] Please see Figures 8 to 12 . Figure 8 , Figure 9 , Figure 10 These are a three-dimensional structural schematic diagram, a three-dimensional exploded view, and a front view of a multi-channel valve according to an embodiment of this application. Figure 11 yes Figure 10 Sectional view E3-E3 in the diagram. Figure 12 yes Figure 11 Sectional view E4-E4 in the diagram.

[0064] In some embodiments, the multi-channel valve includes a valve seat 10 and a valve core 20. The valve core 20 is rotatably disposed within the valve seat 10. The valve core 20 can be the valve core 20 of any of the above embodiments.

[0065] Valve seat 10 defines a receiving cavity 130. One end of valve seat 10 is provided with an open mounting port 140 (see...). Figure 9 This facilitates the installation of the valve core 20. The valve seat 10 has an outer flow channel 110. Specifically, in the illustrated embodiment, there are nine outer flow channels 110, which are spaced apart circumferentially on the valve seat 10. Each outer flow channel 110 forms an opening on the inner circumferential surface 120 of the valve seat 10, and also forms an opening on the end face of the valve seat 10.

[0066] The valve core 20 is rotatably mounted within the valve seat 10 about the rotation axis L. For example... Figure 11As shown, the valve core 20 has multiple non-communicating internal flow channels 230. Each internal flow channel 230 includes a main body 270 and an opening 240 disposed on the outer peripheral surface 280 of the valve core 20. The main body 270 penetrates the valve core 20 and communicates with the opening 240. Specifically, the opening 240 is disposed at the sealing mating part 281. Specifically, in the illustrated embodiment, the number of internal flow channels 230 is four.

[0067] The inner flow channel 230 is used to connect the two corresponding outer flow channels 110 when the valve core 20 rotates to a predetermined position. Figure 11 In the diagram, the flow path of the fluid is shown by dashed lines.

[0068] In some embodiments, the multi-channel valve further includes a seal 40. The seal 40 is used to seal the connection between the inner flow channel 230 and the outer flow channel 110 to prevent fluid leakage.

[0069] Please see Figures 10 to 12 The seal 40 is housed within the receiving cavity 130 and has a through-port 410 extending radially through the valve core 20 via a radial direction D2. The number of through-ports 410 is equal to the number of external channels 110, and they correspond one-to-one. Each through-port 410 communicates with a corresponding external channel 110. The through-port 410 connects the external channel 110 and the internal channel 230.

[0070] A sealing element 40 is disposed between the valve seat 10 and the valve core 20, and abuts against both the valve seat 10 and the valve core 20. Specifically, the sealing element 40 is circumferentially disposed around the valve core 20, and is sandwiched between the valve seat 10 and the valve core 20 in a radial direction D2. The sealing element 40 and the valve seat 10 cannot rotate relative to each other. The valve core 20 and the sealing element 40 can rotate relative to each other. The portion of the outer peripheral surface 280 that abuts against the sealing element 40 is the sealing mating part 281.

[0071] In some embodiments, a dynamic seal is formed between the seal 40 and the valve core 20. The contact portion between the seal 40 and the valve core 20 is made of PTFE (Polytetrafluoroethylene). While ensuring a dynamic seal, the smoothness of the PTFE material helps maintain low friction. A static seal is formed between the seal 40 and the valve seat 10. The contact portion between the seal 40 and the valve seat 10 is made of EPDM (Ethylene Propylene Diene Monomer), and the sealing structure is a double-peak seal.

[0072] Friction is generated between the outer peripheral surface 280 of the valve core 20 and the seal 40. The main improvement of this embodiment is reducing this friction. In some embodiments, the multi-channel valve may not have a seal 40. In this embodiment, the outer peripheral surface 280 of the valve core 20 is in a sealing fit with the inner peripheral surface 120 of the valve seat 10, and the valve core 20 rotates relative to the valve seat 10, generating friction. The improvement of this embodiment also reduces this friction.

[0073] In some embodiments, the multi-channel valve further includes a gasket 50, a cover 60, a sealing ring 70, and an actuator 30.

[0074] A sealing gasket 50 is disposed on the end face of the valve seat 10. The sealing gasket 50 is used to seal the connection between the external flow channel 110 and the external device when the valve seat 10 is connected to the external device. In some embodiments, the sealing gasket 50 is a static seal, the material of the sealing gasket 50 is EPDM, and the sealing structure is a double-peak seal.

[0075] The cover 60 is fitted onto the mounting port 140 of the valve seat 10. The cover 60 and the valve seat 10 can be laser welded together.

[0076] The sealing ring 70 is used to seal between the cover 60 and the valve core 20. In some embodiments, the sealing ring 70 is a double-lipped star-shaped ring, which has good performance in eccentric sealing.

[0077] The actuator 30 is connected to the valve seat 10. The drive end of the actuator 30 is connected to the valve core 20 to drive the valve core 20 to rotate. The actuator 30 is, for example, a motor.

[0078] The main improvement in this embodiment lies in the valve core 20. Therefore, the other components besides the valve core 20 will not be described in detail and can be referred to the prior art.

[0079] The multi-channel valve provided in this application has any two of the openings 240 of the multiple internal flow channels 230 that at least partially overlap in the axial Z direction of the valve core 20. Furthermore, the openings 240 in the valve core 20 are located on the same circumference, which can reduce the size of the sealing mating part 281 in the axial Z direction of the valve core 20, thereby reducing frictional resistance. This reduces the requirements for the actuator 30; in one application scenario, a brushed DC motor can be used instead of a brushless DC motor, reducing costs. In addition, the multi-channel valve has a smaller size in the axial Z direction of the valve core 20, a simpler structure, and fewer parts, further reducing costs.

[0080] On the other hand, this application also provides a thermal management system, which includes multiple cooling branches, such as a battery cooling circuit and an electric drive system cooling circuit, as well as the multi-channel valve of the aforementioned embodiment. Each cooling circuit of the thermal management system is connected to the corresponding external flow channel of the multi-channel valve. In use, a driver drives the valve core to rotate, causing the internal flow channel of the valve core to connect with the corresponding external flow channel, thereby forming a cooling circuit through one or more of these cooling branches via the multi-channel valve. Since the thermal management system includes all the technical features of the aforementioned multi-channel valve, it also possesses all the technical effects of the multi-channel valve, which will not be elaborated here.

[0081] Furthermore, this application also provides a vehicle that includes the aforementioned thermal management system.

[0082] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A spool for use in a multi-passageway valve, characterized by, At least a portion of the outer peripheral surface (280) of the valve core (20) is a sealing mating part (281). The valve core (20) is sealed to the valve seat (10) of the multi-channel valve through the sealing mating part (281). The valve core (20) has multiple non-communicating internal flow channels (230). The internal flow channel (230) includes a main body (270) and an opening (240) provided in the sealing mating part (281). The main body (270) penetrates the valve core (20) and communicates with the opening (240). In this configuration, the openings (240) of at least two of the inner flow channels (230) are alternately arranged in the circumferential (D1) direction of the valve core (20), and any two of the openings (240) of the plurality of inner flow channels (230) at least partially overlap in the axial (Z) direction of the valve core (20).

2. The valve core according to claim 1, characterized in that Any two of the openings (240) of the plurality of internal flow channels (230) completely overlap in the axial (Z) direction of the valve core (20).

3. The valve core according to claim 1, characterized in that, The at least two inner flow channels (230) include a first inner flow channel (231) and a second inner flow channel (232); Along the extension path of the first inner flow channel (231), the position of the first inner flow channel (231) in the axial (Z) direction of the valve core (20) remains unchanged; Along the extension path of the second inner flow channel (232), at least a portion of the second inner flow channel (232) is positioned in the axial (Z) direction of the valve core (20) first gradually away from the first inner flow channel (231) and then gradually closer to the first inner flow channel (231), so that the second inner flow channel (232) bypasses the first inner flow channel (231).

4. The valve core according to claim 3, characterized in that The main body (270) of the second inner flow channel (232) includes: A curved section (272), said curved section (272) being at least a portion of the second inner flow channel (232); A straight segment (271) is provided at the end of the curved segment (272) and extends radially (D2) in the valve core (20). The opening (240) is connected to the end of the straight segment (271) away from the curved segment (272).

5. The valve core of claim 4, wherein, The curved section (272) includes an inner wall (251) and an outer wall (252), both of which are arc-shaped and tangent to the extension of the straight section (271), and / or the inner wall (251) is closer to the first inner flow channel (231) in the axial (Z) direction of the valve core (20) than the outer wall (252).

6. The valve core of claim 3, wherein The valve core (20) includes: Valve body (210), the valve body (210) forming the first internal flow channel (231); A cover (220) and the valve body (210) are axially (Z) joined in the valve core (20) and together define the second inner flow channel (232).

7. A multi-pass valve characterized by, It includes a valve seat (10) and a valve core (20) as described in any one of claims 1-6, wherein the valve core (20) is rotatably disposed within the valve seat (10).

8. The multi-pass valve of claim 7, wherein, The multi-channel valve also includes a sealing element (40), which is disposed between the valve seat (10) and the valve core (20) and abuts against the valve seat (10) and the valve core (20) respectively. The part of the outer peripheral surface (280) that abuts against the sealing element (40) is the sealing mating part (281). The valve seat (10) includes an outer flow channel (110), and the seal (40) includes a through port (410) that connects the outer flow channel (110) and the inner flow channel (230).

9. A thermal management system characterized by, include: The multi-channel valve as described in claim 7 or 8.

10. A vehicle, characterized in that, include: The thermal management system as described in claim 9.

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