Magnetic pole module, suspension electromagnet module, and maglev vehicle

Abstract

A magnetic pole module, a suspension electromagnet module, and a maglev vehicle, relating to the technical field of maglev vehicles. The magnetic pole module comprises an iron core, a dual-layer winding, insulating and heat-conducting blocks, an insulating and heat-conducting plate, and a cooling tube. The iron core is provided with recesses, the dual-layer winding is wound on the iron core, the insulating and heat-conducting blocks are embedded in the recesses, each insulating and heat-conducting block is provided with accommodating grooves, the insulating and heat-conducting plate is provided in the middle of the dual-layer winding, the insulating and heat-conducting plate is connected to the insulating and heat-conducting blocks, at least part of the structure of the cooling tube is accommodated in the accommodating grooves, and the cooling tube is used for introducing a cooling medium so as to perform cooling with respect to heat which is generated by the dual-layer winding and transferred to the cooling tube via the insulating and heat-conducting plate and the insulating and heat-conducting blocks. The described configuration solves the problems of poor heat dissipation performance and limited bearing capacity improvement of a traditional magnetic pole module and a suspension electromagnet module having said magnetic pole module.

Description

A magnetic pole module, a levitation electromagnet module, and a maglev vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411554695.8, filed on November 1, 2024, entitled "A Magnetic Pole Module, a Suspension Electromagnet Module, and a Maglev Vehicle", and Chinese Patent Application No. 202411662210.7, filed on November 20, 2024, entitled "A Magnetic Pole Module, a Suspension Electromagnet Module, and a Maglev Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of maglev vehicle technology, and in particular to a magnetic pole module, a levitation electromagnet module, and a maglev vehicle. Background Technology

[0003] Currently, with the further increase in the speed of maglev vehicles, the vertical dynamic load on the vehicles is intensifying, placing higher demands on their load-bearing capacity. Although the levitation electromagnet module of a maglev vehicle can improve its levitation ability by increasing the current, increasing the current will lead to severe heat generation and pose a risk of burnout.

[0004] In related technologies, the magnetic pole modules of maglev vehicle levitation electromagnet modules adopt a winding structure with alternating aluminum foil and insulating film. The insulating film has a low thermal conductivity, resulting in poor overall heat transfer of the winding and severe overheating. Furthermore, current levitation electromagnet modules all use a double-layer winding structure. To ensure insulation, the double-layer winding structure easily leads to further deterioration of heat dissipation performance, causing the heat inside the winding to be unable to dissipate in time, resulting in rapid overheating under high power conditions.

[0005] Therefore, how to avoid poor heat dissipation performance of the magnetic pole module and the levitation electromagnet module with the magnetic pole module is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this application is to provide a magnetic pole module, a levitation electromagnet module, and a maglev vehicle, which solves the problem of severe overheating of the magnetic pole module.

[0007] To achieve the above objectives, this application provides a magnetic pole module, comprising:

[0008] Iron core, wherein the iron core is provided with grooves;

[0009] Double-layer windings are wound on the iron core;

[0010] An insulating heat-conducting block is embedded in the groove, and the insulating heat-conducting block is provided with a receiving groove;

[0011] An insulating heat-conducting plate is disposed between the double-layer windings and connected to the insulating heat-conducting block;

[0012] A cooling pipe, at least a portion of which is housed in the receiving groove, is used to introduce a cooling medium to cool the heat generated by the double-layer winding and transferred to the cooling pipe via the insulating heat-conducting plate and the insulating heat-conducting block.

[0013] In some embodiments, the insulating heat-conducting block is provided with a slot, the insulating heat-conducting plate is annular, and the side arm of the insulating heat-conducting plate extends inward to form a plug-in portion, which is inserted into the slot to connect the insulating heat-conducting plate to the insulating heat-conducting block.

[0014] In some embodiments, the slot is an elongated groove, and the length of the slot is less than the length of the insulating heat-conducting block.

[0015] In some embodiments, the gaps between the insulating heat-conducting block and the groove, the gaps between the cooling pipe and the receiving groove, and the gaps between the plug and the slot are all filled with a heat-conducting layer.

[0016] In some embodiments, the number of insulating heat-conducting blocks is two, and the two insulating heat-conducting blocks are respectively embedded in the grooves on both sides of the iron core;

[0017] The cooling pipe includes two coil bodies, both of which are S-shaped and are respectively housed in the receiving grooves of the two insulating heat-conducting blocks.

[0018] In some embodiments, the cooling pipe is a copper pipe and is bent into shape using specialized equipment; the cooling pipe and the insulating heat-conducting block are integrated through an interference fit.

[0019] In some embodiments, the cooling pipe further includes an inlet pipe, an outlet pipe, and a connecting pipe assembly. The inlet pipe and the outlet pipe are respectively connected to the coil bodies on both sides, and the connecting pipe assembly is used to connect the coil bodies on both sides.

[0020] In some embodiments, both the insulating heat-conducting plate and the insulating heat-conducting block include a substrate and at least three insulating heat-conducting layers disposed on the substrate;

[0021] Insulating paper is provided between the double-layer winding and the iron core.

[0022] In some embodiments, the double-layer winding includes a first layer winding and a second layer winding, which are connected in series by a connector.

[0023] In some embodiments, the connector is sleeved on the outer periphery of the iron core. The connector includes a first layer connecting structure and a second layer connecting structure that are interconnected. The first layer connecting structure is located above the second layer connecting structure. The first ends of the first layer connecting structure and the second layer connecting structure are integrally connected. The second ends of the first layer connecting structure and the second layer connecting structure are interconnected. The second end of the first layer connecting structure is provided with a first connection point for connecting the first layer winding. The second end of the second layer connecting structure is provided with a second connection point for connecting the second layer winding. The first layer winding starts from the first connection point and is wound along a first direction on the outside of the first layer connecting structure. The second layer winding starts from the second connection point and is wound along a second direction on the outside of the second layer connecting structure. The first direction and the second direction are opposite directions.

[0024] In some embodiments, the connector extends into a Z-shape, and the connector is bent to form a through hole for the iron core to be nested.

[0025] This application also provides a levitation electromagnet module for a maglev vehicle, including a U-shaped box girder and a magnetic pole module as described in any of the above claims, wherein the magnetic pole module is fixed to the U-shaped box girder by a flange.

[0026] In some embodiments, the magnetic pole module is provided in two sets, and the levitation electromagnet module further includes:

[0027] A media storage box is located inside the U-shaped box girder and is connected to the cooling pipes of the two sets of magnetic pole modules for storing liquid cooling media.

[0028] Two circulation pumps are installed inside the U-shaped box girder. One of the circulation pumps is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage tank and one of the sets of magnetic pole modules. The other circulation pump is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage tank and another set of magnetic pole modules.

[0029] Heat sinks are provided on the outer wall of the U-shaped box girder to dissipate heat from the cooling medium inside the U-shaped box girder.

[0030] In some embodiments, the levitation electromagnet module further includes:

[0031] A temperature detection module is installed inside the U-shaped box girder to detect the temperature inside the U-shaped box girder;

[0032] The control module is communicatively connected to the temperature detection module and the circulating pump, and is used to control the opening and closing of the circulating pump according to the temperature value detected by the temperature detection module.

[0033] This application also provides a maglev vehicle, including the levitation electromagnet module described in any of the above claims.

[0034] Compared to the aforementioned background technology, the magnetic pole module provided in this application includes an iron core, a double-layer winding, an insulating heat-conducting block, an insulating heat-conducting plate, and a cooling pipe. The iron core has a groove, the double-layer winding is wound on the iron core, the insulating heat-conducting block is embedded in the groove, the insulating heat-conducting block has a receiving slot, the insulating heat-conducting plate is disposed between the double-layer winding, and the insulating heat-conducting plate is connected to the insulating heat-conducting block. At least a portion of the structure of the cooling pipe is housed in the receiving slot, and the cooling pipe is used to introduce a cooling medium to cool the heat generated by the double-layer winding and transferred to the cooling pipe via the insulating heat-conducting plate and the insulating heat-conducting block.

[0035] It can be seen that the heat generated by the double-layer winding can be transferred to the insulating heat-conducting plate, and then to the cooling pipe through the insulating heat-conducting block. Alternatively, it can be transferred directly to the cooling pipe through the insulating heat-conducting block, and then the cooling medium in the cooling pipe can be forced to convect and dissipate heat. This heat dissipation path has low thermal resistance, high heat transfer efficiency, and good heat dissipation effect.

[0036] The advantages of this magnetic pole module design mainly include: compared to traditional magnetic pole modules, which suffer from low thermal conductivity due to the internal insulating film and resin, resulting in poor heat conduction and inability to dissipate heat generated inside the winding under heavy loads, leading to severe overheating and even damage, the magnetic pole module provided in this application optimizes the internal structure of the magnetic pole and increases the heat dissipation path. Specifically, by adding insulating heat-conducting blocks and insulating heat-conducting plates, the thermal resistance of the heat generated by the double-layer winding is significantly reduced during the heat transfer process, improving the thermal conductivity of the winding. By adding cooling pipes and using convection cooling medium to dissipate heat, the heat dissipation effect is significantly enhanced, solving the problems of poor heat dissipation performance and limited load-bearing capacity of traditional magnetic pole modules and levitation electromagnet modules with this magnetic pole module. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0038] Figure 1 is a schematic diagram of the magnetic pole module in an embodiment of this application;

[0039] Figure 2 is a cross-sectional view of the magnetic pole module shown in Figure 1;

[0040] Figure 3 is a schematic diagram of the heat dissipation path of the magnetic pole module shown in Figure 2;

[0041] Figure 4 is a schematic diagram of the assembly of the insulating heat-conducting block and the iron core in the magnetic pole module shown in Figure 1.

[0042] Figure 5 is a schematic diagram of the assembly of the insulating heat-conducting plate and the insulating heat-conducting block in the magnetic pole module shown in Figure 1.

[0043] Figure 6 is a schematic diagram of the cooling pipe layout in the magnetic pole module shown in Figure 1;

[0044] Figure 7 is a schematic diagram of the double-layer winding structure in the magnetic pole module shown in Figure 1;

[0045] Figure 8 is a schematic diagram of the connector in the double-layer winding shown in Figure 7;

[0046] Figure 9 is a schematic diagram of the winding direction of the first and second windings in the double-layer winding shown in Figure 7.

[0047] Figure 10 is a schematic diagram of the structure of the first type of levitation electromagnet module in the embodiment of this application;

[0048] Figure 11 is a schematic diagram of the heat sink layout in the first type of levitation electromagnet module shown in Figure 10.

[0049] Figure 12 is a schematic diagram of the structure of the second type of levitation electromagnet module in the embodiments of this application.

[0050] Among them: 10-Magnetic pole module, 11-Iron core, 111-Groove, 12-Double layer winding, 121-First layer winding, 122-Second layer winding, 13-Insulating heat-conducting block, 131-Accommodation slot, 132-Slot, 14-Insulating heat-conducting plate, 141-Plug-in part, 15-Cooling pipe, 151-Coil body, 152-Inlet pipe, 153-Outlet pipe, 16-Insulating paper, 17-Connector, 171-First layer connection structure, 1711-First connection point, 172-Second layer connection structure, 1721-Second connection point, 18-Flange, 19-Linear generator coil, 110-Linear generator lead; 20-U-shaped box girder; 30-Media storage tank; 40-Circulating pump; 50-Heat sink; 60-Water distribution pipe; 70-Refrigeration equipment. Detailed Implementation

[0051] The technical solutions of 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 of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0054] Please refer to Figures 1 to 12. Figure 1 is a structural schematic diagram of the magnetic pole module in this embodiment; Figure 2 is a cross-sectional view of the magnetic pole module shown in Figure 1; Figure 3 is a schematic diagram of the heat dissipation path of the magnetic pole module shown in Figure 2; Figure 4 is a schematic diagram of the assembly of the insulating heat-conducting block and the iron core in the magnetic pole module shown in Figure 1; Figure 5 is a schematic diagram of the assembly of the insulating heat-conducting plate and the insulating heat-conducting block in the magnetic pole module shown in Figure 1; Figure 6 is a schematic diagram of the layout of the cooling pipes in the magnetic pole module shown in Figure 1; Figure 7 is a structural schematic diagram of the double-layer winding in the magnetic pole module shown in Figure 1; Figure 8 is a structural schematic diagram of the connector in the double-layer winding shown in Figure 7; Figure 9 is a schematic diagram of the winding direction of the first layer winding and the second layer winding in the double-layer winding shown in Figure 7; Figure 10 is a structural schematic diagram of the first type of levitation electromagnet module in this embodiment; Figure 11 is a schematic diagram of the layout of the heat sink in the first type of levitation electromagnet module shown in Figure 10; Figure 12 is a structural schematic diagram of the second type of levitation electromagnet module in this embodiment.

[0055] The magnetic pole module 10 provided in this application embodiment includes an iron core 11, a double-layer winding 12, an insulating heat-conducting block 13, an insulating heat-conducting plate 14, and a cooling pipe 15.

[0056] The iron core 11 has a groove 111, the double-layer winding 12 is wound on the iron core 11, the insulating heat-conducting block 13 is embedded in the groove 111, the insulating heat-conducting block 13 has a receiving groove 131, the insulating heat-conducting plate 14 is disposed between the double-layer winding 12, the insulating heat-conducting plate 14 is used to replace the insulating paper previously disposed between the double-layer winding 12, the insulating heat-conducting plate 14 has a thickness of 1mm to 2mm, the insulating heat-conducting plate 14 is connected to the insulating heat-conducting block 13, at least part of the structure of the cooling pipe 15 is accommodated in the receiving groove 131, the cooling pipe 15 is used to introduce a cooling medium to cool the heat generated by the double-layer winding 12 and transferred to the cooling pipe 15 through the insulating heat-conducting plate 14 and the insulating heat-conducting block 13.

[0057] It can be seen that the heat generated by the double-layer winding 12 can be transferred to the insulating heat-conducting plate 14, and then to the cooling pipe 15 via the insulating heat-conducting block 13. Alternatively, it can be directly transferred to the cooling pipe 15 via the insulating heat-conducting block 13, thereby allowing the cooling medium in the cooling pipe 15 to force convection heat dissipation. This heat dissipation path has low thermal resistance, high heat transfer efficiency, and good heat dissipation effect.

[0058] It should be noted that the heat dissipation path of the original magnetic pole structure includes two paths: a first path and a second path. The first path involves the heat inside the winding being transferred laterally to the epoxy resin on the outer surface (the epoxy resin encapsulating the magnetic pole module 10), and then dissipated through the circulating airflow. The second path involves the heat being transferred laterally to the iron core 11, and then through the flange 18 to the U-shaped box girder 20, where it is also dissipated through the circulating airflow. Both paths require lateral heat transfer within the winding. However, the epoxy resin outside the iron core 11 and the double-layer winding 12 has a relatively high thermal resistance. Meanwhile, a layer of high-performance insulating paper is placed between the double-layer winding 12, and the resin fills the gaps, providing good insulation. However, the resin and insulating paper have low thermal conductivity and high thermal resistance, resulting in poor heat dissipation performance. The heat inside the winding cannot be dissipated in time, leading to very low heat transfer efficiency and poor heat dissipation. Under high power conditions, it will quickly overheat.

[0059] Compared to the traditional setup, the heat dissipation path of the magnetic pole module 10 provided in this embodiment is as follows: the first path is the same as the original magnetic pole (i.e., the heat inside the winding is transferred laterally to the epoxy resin on the outer surface, and then dissipated by the circulating air), while the second path has changed. As shown in Figure 3, the heat of the double-layer winding 12 is transferred vertically from point A to the insulating heat-conducting plate 14, then to the insulating heat-conducting block 13, and then to the cooling pipe 15, where it is dissipated by forced convection of the cooling medium.

[0060] It should be emphasized that a vertical heat dissipation path has been added to the second path, and the heat dissipation process passes through the insulating heat-conducting plate 14. The thermal resistance of the entire path is greatly reduced, and the heat dissipation effect is significantly enhanced.

[0061] In this way, the magnetic pole module 10 provided in this application optimizes the internal structure of the magnetic pole and increases the heat dissipation path. Specifically, by adding an insulating heat-conducting block 13 and an insulating heat-conducting plate 14, the thermal resistance of the heat generated by the double-layer winding 12 is greatly reduced during the heat transfer process, thereby improving the heat conduction capacity of the winding. By adding a cooling pipe 15, heat is dissipated by using the cooling medium for convection heat dissipation, and the heat dissipation effect is significantly enhanced. This solves the problems of poor heat dissipation performance and limited load-bearing capacity of traditional magnetic pole modules 10 and levitation electromagnet modules with this magnetic pole module 10.

[0062] To facilitate the connection between the insulating heat-conducting blocks 13 and the insulating heat-conducting blocks 13, the insulating heat-conducting blocks 13 are provided with slots 132. The insulating heat-conducting plate 14 has a ring structure, and the side arms of the insulating heat-conducting plate 14 extend inward to form a plug-in part 141. The plug-in part 141 is plugged into the slot 132 to connect the insulating heat-conducting plate 14 to the insulating heat-conducting blocks 13.

[0063] The slot 132 can be a long and narrow slot. The length of the slot 132 should be less than the length of the insulating heat-conducting block 13. In this way, the insulating heat-conducting block 13 has a long and narrow slot, and the insulating heat-conducting plate 14 is inserted into the long and narrow slot of the insulating heat-conducting block 13 through the plug-in part 141, thereby ensuring the stability of the connection between the insulating heat-conducting block 13 and the insulating heat-conducting block 13.

[0064] The insulating heat-conducting plate 14 has a rectangular ring structure and can be made of two parts spliced ​​together. In this way, the insulating heat-conducting plate 14 is arranged along the outer periphery of the iron core 11, which can greatly improve the heat conduction efficiency of the double-layer winding 12.

[0065] To improve heat transfer efficiency, the gaps between the insulating heat-conducting block 13 and the groove 111, the gaps between the cooling pipe 15 and the receiving groove 131, and the gaps between the plug-in part 141 and the slot 132 are all filled with a heat-conducting layer. This heat-conducting layer can be a high thermal conductivity silicone grease layer. This arrangement can ensure full contact between the components and greatly improve heat transfer efficiency.

[0066] In some embodiments, the number of insulating heat-conducting blocks 13 is two. Correspondingly, grooves 111 are provided on both sides of the iron core 11, and the two insulating heat-conducting blocks 13 are respectively embedded in the grooves 111 on both sides of the iron core 11.

[0067] Specifically, considering that there is a lot of heat in the length direction of the double-layer winding 12, grooves 111 are provided on the two side walls in the length direction of the iron core 11, and two insulating heat-conducting blocks 13 are respectively embedded in the two grooves 111.

[0068] It should be noted that, in order to facilitate ground insulation and winding, the surface of the iron core 11 must be flat, and the thickness of the insulating heat-conducting block 13 should be as close as possible to the depth of the corresponding groove 111. In this way, when the insulating heat-conducting block 13 is embedded in the corresponding groove 111, the surface of the iron core 11 can be flat, which can improve the insulation reliability.

[0069] Correspondingly, the cooling pipe 15 includes two coil bodies 151, both of which are S-shaped or have a multi-segment continuous S-shaped structure. This increases the contact area between the cooling pipe 15 and the insulating heat-conducting block 13, thereby improving the heat dissipation efficiency.

[0070] The two coil bodies 151 are respectively housed in the receiving grooves 131 of the two insulating heat-conducting blocks 13, and the structure of the receiving grooves 131 is adapted to the structure of the corresponding coil bodies 151.

[0071] Of course, depending on actual needs, the cooling pipe 15 can be a copper pipe. The copper pipe is bent and wound into shape by special equipment, and then inserted into the space reserved by the insulating heat-conducting block 13. The cooling pipe 15 and the insulating heat-conducting block 13 are integrated by interference fit, and the remaining gaps are filled with high thermal conductivity silicone grease. On the one hand, this ensures that the two are in complete contact and improves the heat transfer capacity. On the other hand, the insulating heat-conducting block 13 can protect the copper pipe and prevent it from deforming during installation.

[0072] In addition, the cooling pipe 15 is led out through an external copper pipe, which is led out through the groove at the bottom of the iron core 11 and is opposite to the linear generator lead 110. There can be a total of four external copper pipes, which can be kept as two inlets and two outlets, or the left and right coil bodies 151 can be connected by welding or threaded joints to keep as one inlet and one outlet.

[0073] In some embodiments, the cooling pipe 15 further includes an inlet pipe 152, an outlet pipe 153, and a connecting pipe assembly. The inlet pipe 152 and the outlet pipe 153 are respectively connected to the coil bodies 151 on both sides, and the connecting pipe assembly is used to connect the coil bodies 151 on both sides.

[0074] In this way, the inlet pipe 152 is used to introduce cooling medium into one of the coil bodies 151. The cooling medium flows through the connecting pipe assembly between the two coil bodies 151, thereby carrying away the heat transferred to the cooling pipe 15. The outlet pipe 153 is used to discharge the cooling medium after heat exchange to the outside of the cooling pipe 15. Of course, both the inlet pipe 152 and the outlet pipe 153 can be configured as external copper pipes.

[0075] Of course, a refrigeration circulation system can be connected between the two coil bodies 151. Different types of heat dissipation media, such as nitrogen, Freon, oil, etc., can be filled in the pipes to form a circulation of the cooling medium. Through continuous circulation by the outdoor unit, the heat transferred to the cooling pipe 15 can be carried away by the circulation of the cooling medium, that is, the heat of the winding transferred from the insulating heat-conducting plate 14 can be dissipated, thereby reducing the internal temperature of the magnetic pole and greatly improving the heat dissipation efficiency.

[0076] In some embodiments, both the insulating heat-conducting plate 14 and the insulating heat-conducting block 13 include a substrate and at least three insulating heat-conducting layers disposed on the substrate. The insulating heat-conducting layers may be made of a high thermal conductivity insulating material.

[0077] Taking the insulating heat-conducting plate 14 as an example, a special high thermal conductivity insulating material, boron nitride, is sprayed onto the surface of the substrate. Spraying is carried out under high temperature and high pressure, and is performed in at least three coats. After each coat, the substrate must be allowed to dry completely before the next coat is applied. Special tooling is designed for the sample to be coated to ensure uniform and complete coating, with an overall coating thickness of less than 80 μm and a DC withstand voltage greater than 4 kV. Alternatively, a special high thermal conductivity insulating material, boron nitride film, can be bonded. First, boron nitride is pressed into a film under high temperature and high pressure, and then the boron nitride film is directly bonded to the substrate. Of course, the outer surface insulation treatment of the insulating heat-conducting block 13 is the same as that of the insulating heat-conducting plate 14.

[0078] The insulating heat-conducting plate 14 can be made of copper plate. Of course, the copper plate can also be replaced with other materials, such as aluminum plate, steel plate and other materials with excellent thermal conductivity.

[0079] In this way, instead of insulating paper 16, a copper plate coated with insulating and heat-conducting material is placed between the double windings 12. This not only provides high withstand voltage but also allows the heat generated by the upper and lower windings to be transferred laterally to the iron core 11.

[0080] To ensure the withstand voltage strength of the double-layer winding 12 to ground, insulating paper 16 is provided between the double-layer winding 12 and the iron core 11.

[0081] To further improve heat dissipation efficiency, the entire magnetic pole module 10 is encapsulated with epoxy resin, and the gaps between all internal components of the magnetic pole module 10 are filled with epoxy resin to further improve heat transfer efficiency.

[0082] In addition, a slot is cut into the top of the iron core 11 to install a linear generator coil 19, which is led out through the linear generator lead 110. The linear generator coil 19 generates electricity without contact by alternating magnetic flux during vehicle movement. The linear generator lead 110 is led out through the slot at the bottom of the iron core 11.

[0083] In some embodiments, the double-layer winding 12 includes a first-layer winding 121 and a second-layer winding 122, which are connected in series by a connector 17.

[0084] The connector 17 is sleeved on the outer periphery of the iron core 11. The connector 17 includes a first layer connecting structure 171 and a second layer connecting structure 172 that are interconnected. The first layer connecting structure 171 is located above the second layer connecting structure 172. The first ends of the first layer connecting structure 171 and the second layer connecting structure 172 are integrally connected. The second ends of the first layer connecting structure 171 and the second layer connecting structure 172 are interconnected. The second end of the first layer connecting structure 171 is provided with a first connection point 1711 for connecting the first layer winding 121. The second end of the second layer connecting structure 172 is provided with a second connection point 1721 for connecting the second layer winding 122. The first layer winding 121 is wound around the outside of the first layer connecting structure 171 in a first direction starting from the first connection point 1711. The second layer winding 122 is wound around the outside of the second layer connecting structure 172 in a second direction starting from the second connection point 1721. The first direction and the second direction are opposite directions.

[0085] In some embodiments, the connector 17 extends into a Z-shape, and the Z-shaped connector 17 is bent to form a through hole for the iron core 11 to be nested. The structure of the through hole is adapted to the structure of the iron core 11. The first layer winding 121 is ultrasonically welded to the first connection point 1711 and wound in a counterclockwise direction on the outside of the first layer connection structure 171. The second layer winding 122 is ultrasonically welded to the second connection point 1721 and wound in a clockwise direction on the outside of the second layer connection structure 172.

[0086] More specifically, the winding consists of alternating layers of aluminum foil and insulating film, i.e., one layer of insulating film and one layer of aluminum foil. This increases the winding window fill rate, the number of turns, and the magnetic pole performance. The insulating film is slightly wider than the aluminum foil, with each side being 1-1.5 mm longer than the aluminum foil to ensure insulation reliability. The winding has a double-layer structure, which, while ensuring the number of turns, increases the aluminum foil fill rate and improves thermal conductivity. The upper and lower layers of aluminum foil are connected in series via connector 17. The upper winding starts from the first connection point 1711 of connector 17 and winds outwards, while the lower winding starts from the second connection point 1721 of connector 17 (in the opposite direction to the upper winding). This ensures that the power supply terminals of the entire winding are located outside the winding, facilitating joint welding and improving safety (in a single-layer winding, one of the two terminals is located inside the winding near the iron core 11, which can easily burn the insulating paper 16).

[0087] The levitation electromagnet module for a maglev vehicle provided in this application includes a U-shaped box girder 20 and a magnetic pole module 10 as described in the above specific embodiments. The magnetic pole module 10 is fixed to the U-shaped box girder 20 by a flange 18.

[0088] In some embodiments, two sets of magnetic pole modules 10 are provided. The levitation electromagnet module also includes a medium storage tank 30 and two circulation pumps 40. The medium storage tank 30 is located inside the U-shaped box girder 20 and is connected to the cooling pipes 15 of the two sets of magnetic pole modules 10. The medium storage tank 30 is used to store liquid cooling medium. The two circulation pumps 40 are located inside the U-shaped box girder 20. One circulation pump 40 is used to provide circulation power so that the cooling medium forms a cooling cycle between the medium storage tank 30 and one set of magnetic pole modules 10. The other circulation pump 40 is used to provide circulation power so that the cooling medium forms a cooling cycle between the medium storage tank 30 and the other set of magnetic pole modules 10.

[0089] In this embodiment, the refrigeration system is integrated inside the U-shaped box girder 20. Copper pipes are fixed inside the U-shaped box girder 20. The external copper pipes (inlet and outlet) of the magnetic pole module 10 are connected to the water distribution pipe 60. The water distribution pipe 60 is connected to the circulation pump 40. The cooling medium can be transferred under the circulation power of the circulation pump 40.

[0090] In addition, several heat sinks 50 are installed on the outside of the U-shaped box girder 20. The circulating air cools the cooling medium through the heat sinks 50. This embodiment utilizes the circulating air, eliminating the need for an additional cooling fan and saving energy.

[0091] In some embodiments, the refrigeration device 70 is external. In this embodiment, the water distribution pipe 60 is directly connected to the external refrigeration device 70. The refrigeration device 70 itself includes a circulation pump and a cooling fan. This embodiment has a simple structure, but requires an additional cooling fan, and the refrigeration device 70 needs to be external.

[0092] To facilitate automatic control, the levitation electromagnet module also includes a temperature detection module and a control module. The temperature detection module is located inside the U-shaped box girder 20 and is used to detect the temperature inside the U-shaped box girder 20. The control module is communicatively connected to the temperature detection module and the circulating pump 40, and is used to control the opening and closing of the circulating pump 40 based on the temperature value detected by the temperature detection module.

[0093] By installing a temperature detection module inside the U-shaped box girder 20, the internal temperature changes can be monitored in real time, ensuring the safety and stability of the electromagnet structure. The control module controls the opening and closing of the circulating pump 40 based on the temperature value detected by the temperature detection module. This allows for adjustments to the cooling system's operation according to actual temperature requirements, improving energy efficiency and cost-effectiveness. The communication connection between the temperature detection module and the control module enables automated control, reducing manual intervention and improving operational convenience and accuracy.

[0094] This application also provides a maglev vehicle, including the levitation electromagnet module described in the above embodiments.

[0095] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0096] The magnetic pole module, levitation electromagnet module, and maglev vehicle provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A magnetic pole module, characterized in that, include: Iron core, wherein the iron core is provided with grooves; Double-layer windings are wound on the iron core; An insulating heat-conducting block is embedded in the groove, and the insulating heat-conducting block is provided with a receiving groove; An insulating heat-conducting plate is disposed between the double-layer windings and connected to the insulating heat-conducting block; A cooling pipe, at least a portion of which is housed in the receiving groove, is used to introduce a cooling medium to cool the heat generated by the double-layer winding and transferred to the cooling pipe via the insulating heat-conducting plate and the insulating heat-conducting block.

2. The magnetic pole module as described in claim 1, characterized in that, The insulating heat-conducting block is provided with a slot, the insulating heat-conducting plate has a ring structure, and the side arm of the insulating heat-conducting plate extends inward to form a plug-in part. The plug-in part is inserted into the slot to connect the insulating heat-conducting plate to the insulating heat-conducting block.

3. The magnetic pole module as described in claim 2, characterized in that, The slot is an elongated slot, and the length of the slot is less than the length of the insulating heat-conducting block.

4. The magnetic pole module as described in claim 2, characterized in that, The gaps between the insulating heat-conducting block and the groove, the gaps between the cooling pipe and the receiving groove, and the gaps between the plug and the slot are all filled with a heat-conducting layer.

5. The magnetic pole module as described in claim 1, characterized in that, The number of insulating heat-conducting blocks is two, and the two insulating heat-conducting blocks are respectively embedded in the grooves on both sides of the iron core; The cooling pipe includes two coil bodies, both of which are S-shaped and are respectively housed in the receiving grooves of the two insulating heat-conducting blocks.

6. The magnetic pole module as described in claim 5, characterized in that, The cooling pipe is a copper pipe, which is bent and shaped using special equipment; the cooling pipe and the insulating heat-conducting block are integrated through an interference fit.

7. The magnetic pole module as described in claim 5, characterized in that, The cooling pipe also includes an inlet pipe, an outlet pipe, and a connecting pipe assembly. The inlet pipe and the outlet pipe are respectively connected to the coil bodies on both sides, and the connecting pipe assembly is used to connect the coil bodies on both sides.

8. The magnetic pole module as described in claim 1, characterized in that, Both the insulating heat-conducting plate and the insulating heat-conducting block include a substrate and at least three insulating heat-conducting layers disposed on the substrate; Insulating paper is provided between the double-layer winding and the iron core.

9. The magnetic pole module as described in any one of claims 1-8, characterized in that, The double-layer winding includes a first layer winding and a second layer winding, which are connected in series by a connector.

10. The magnetic pole module as described in claim 9, characterized in that, The connector is sleeved on the outer periphery of the iron core. The connector includes a first layer connecting structure and a second layer connecting structure that are interconnected. The first layer connecting structure is located above the second layer connecting structure. The first ends of the first layer connecting structure and the second layer connecting structure are integrally connected. The second ends of the first layer connecting structure and the second layer connecting structure are interconnected. The second end of the first layer connecting structure is provided with a first connection point for connecting the first layer winding. The second end of the second layer connecting structure is provided with a second connection point for connecting the second layer winding. The first layer winding starts from the first connection point and is wound along a first direction on the outside of the first layer connecting structure. The second layer winding starts from the second connection point and is wound along a second direction on the outside of the second layer connecting structure. The first direction and the second direction are opposite directions.

11. The magnetic pole module as described in claim 9, characterized in that, The connector extends into a Z-shape, and the connector is bent to form a through hole for the iron core to be nested.

12. A levitation electromagnet module for a maglev vehicle, comprising a U-shaped box girder, characterized in that, It also includes a magnetic pole module as described in any one of claims 1-11, wherein the magnetic pole module is fixed to the U-shaped box girder by a flange.

13. The levitation electromagnet module as described in claim 12, characterized in that, The magnetic pole module is provided in two sets, and the levitation electromagnet module further includes: A media storage box is located inside the U-shaped box girder and is connected to the cooling pipes of the two sets of magnetic pole modules for storing liquid cooling media. Two circulation pumps are installed inside the U-shaped box girder. One of the circulation pumps is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage tank and one of the sets of magnetic pole modules. The other circulation pump is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage tank and another set of magnetic pole modules. Heat sinks are provided on the outer wall of the U-shaped box girder to dissipate heat from the cooling medium inside the U-shaped box girder.

14. The levitation electromagnet module as described in claim 13, characterized in that, The levitation electromagnet module also includes: A temperature detection module is installed inside the U-shaped box girder to detect the temperature inside the U-shaped box girder; The control module is communicatively connected to the temperature detection module and the circulating pump, and is used to control the opening and closing of the circulating pump according to the temperature value detected by the temperature detection module.

15. A magnetic levitation vehicle, characterized in that, Includes the levitation electromagnet module as described in any one of claims 12-14.

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