Magnetic pole module, suspension electromagnet module and magnetic suspension vehicle

Abstract

The invention discloses a magnetic pole module, a suspension electromagnet module and a magnetic levitation vehicle, and relates to the technical field of magnetic levitation vehicles, and the magnetic pole module comprises an iron core, a double-layer winding, an insulation heat conduction block, an insulation heat conduction plate and a cooling pipe. The iron core is provided with a groove, the double-layer winding is wound on the iron core, the insulating heat conduction block is embedded in the groove and provided with a containing groove, the insulating heat conduction plate is arranged between the double-layer winding and connected with the insulating heat conduction block, at least part of the structure of the cooling pipe is contained in the containing groove, and the cooling pipe is used for introducing a cooling medium. And the heat generated by the double-layer winding and transmitted to the cooling pipe through the insulating heat-conducting plate and the insulating heat-conducting block is cooled. According to the arrangement mode, the problems that a traditional magnetic pole module and the suspension electromagnet module with the magnetic pole module are poor in heat dissipation performance and limited in bearing capacity improvement are solved.

Description

Technical Field

[0001] The present application relates to the technical field of maglev vehicles, and in particular to a magnetic pole module, a suspension electromagnet module and a maglev vehicle. Background Art

[0002] At present, as the speed of maglev vehicles continues to increase, the vertical dynamic load of the vehicle increases, which puts higher requirements on the load-bearing capacity. Although the suspension electromagnet module of the maglev vehicle can increase the suspension capacity by increasing the current, increasing the current will cause severe heat generation and there is a risk of burning.

[0003] In the related technology, the pole module of the suspension electromagnet module of the maglev vehicle adopts a winding structure with alternating aluminum foil and insulating film. The thermal conductivity of the insulating film is low, the overall heat transfer effect of the winding is poor, and the heat generation is serious. In addition, the pole modules of the current suspension electromagnet module are all double-layer winding structures. In order to ensure the insulation effect, the double-layer winding is prone to further deterioration of the heat dissipation performance, resulting in the heat inside the winding cannot be dissipated in time, and it will quickly overheat under high power conditions.

[0004] Therefore, how to avoid the poor heat dissipation performance of the magnetic pole module and the suspended electromagnet module having the magnetic pole module is a technical problem that those skilled in the art need to solve at present. Summary of the invention

[0005] The purpose of the present application is to provide a magnetic pole module, a suspension electromagnet module and a maglev vehicle, which solve the problem of serious heating of the magnetic pole module.

[0006] To achieve the above objectives, the present application provides a magnetic pole module, comprising:

[0007] An iron core, wherein the iron core is provided with a groove;

[0008] A double-layer winding, wound on the iron core;

[0009] An insulating heat-conducting block is embedded in the groove, and the insulating heat-conducting block is provided with a containing groove;

[0010] An insulating heat-conducting plate, disposed between the double-layer windings and connected to the insulating heat-conducting block;

[0011] A cooling pipe, at least part of the structure of which is accommodated in the accommodating groove, and the cooling pipe is used to pass 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.

[0012] In some embodiments, the insulating heat conductive block is provided with a slot, the insulating heat conductive plate is a ring structure, and the side arm of the insulating heat conductive plate extends inwardly to form a plug-in portion, and the plug-in portion is plug-fitted with the slot to connect the insulating heat conductive plate to the insulating heat conductive block.

[0013] In some embodiments, the gap between the insulating heat-conducting block and the groove, the gap between the cooling tube and the accommodating groove, and the gap between the plug-in portion and the slot are all filled with a heat-conducting layer.

[0014] In some embodiments, the number of the 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;

[0015] The cooling pipe comprises two coil bodies, both of which are S-shaped, and the two coil bodies are respectively accommodated in the accommodating grooves of the two insulating heat-conducting blocks.

[0016] In some embodiments, the cooling pipe further includes a liquid inlet pipe, a liquid outlet pipe and a connecting pipe assembly, the liquid inlet pipe and the liquid 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.

[0017] In some embodiments, the insulating heat-conducting plate and the insulating heat-conducting block each include a substrate and at least three insulating heat-conducting layers disposed on the substrate;

[0018] Insulating paper is arranged between the double-layer winding and the iron core.

[0019] In some embodiments, the double-layer winding includes a first layer winding and a second layer winding, and the first layer winding and the second layer winding are connected in series through a connector;

[0020] The connecting piece is sleeved on the outer circumference of the iron core, and the connecting piece includes a first connecting structure and a second connecting structure that are connected to each other, the first connecting structure is located above the second connecting structure, the first ends of the first connecting structure and the second connecting structure are integrally connected, the second ends of the first connecting structure and the second connecting structure are connected to each other, and the second end of the first connecting structure is provided with a first connecting point for connecting the first layer of winding, and the second end of the second connecting structure is provided with a second connecting point for connecting the second layer of winding, the first layer of winding is wound around the outside of the first layer of connecting structure along a first direction starting from the first connecting point, and the second layer of winding is wound around the outside of the second layer of connecting structure along a second direction starting from the second connecting point, and the first direction and the second direction are opposite directions.

[0021] The present application also provides a suspension electromagnet module for a maglev vehicle, comprising a U-shaped box beam and a magnetic pole module as described in any one of the above items, wherein the magnetic pole module is fixed to the U-shaped box beam via a flange.

[0022] In some embodiments, the magnetic pole modules are provided in two groups, and the suspension electromagnet module further comprises:

[0023] A medium storage box is arranged in the U-shaped box beam and is connected to the cooling pipes of the two groups of magnetic pole modules, and is used to store liquid cooling medium;

[0024] Two circulation pumps are arranged in the U-shaped box beam, one of which is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box and one group of the magnetic pole modules, and the other circulation pump is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box and another group of the magnetic pole modules;

[0025] The heat sink is arranged on the outer side wall of the U-shaped box beam and is used for dissipating the heat of the cooling medium inside the U-shaped box beam.

[0026] In some embodiments, the suspension electromagnet module further includes:

[0027] A temperature detection module is provided in the U-shaped box girder and is used to detect the temperature inside the U-shaped box girder;

[0028] The control module is connected to the temperature detection module and the circulation pump for controlling the circulation pump to open and close according to the temperature value detected by the temperature detection module.

[0029] The present application also provides a magnetic levitation vehicle, comprising the levitation electromagnet module described in any one of the above items.

[0030] With respect to the above background technology, the magnetic pole module provided in the embodiment of the present application includes an iron core, a double-layer winding, an insulating heat-conducting block, an insulating heat-conducting plate and a cooling pipe. Among them, the iron core is provided with 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 is provided with a receiving groove, the insulating heat-conducting plate is provided between the double-layer winding, the insulating heat-conducting plate is connected to the insulating heat-conducting block, at least part of the structure of the cooling pipe is received in the receiving groove, and the cooling pipe is used to pass a cooling medium to cool the heat generated by the double-layer winding and transferred to the cooling pipe through the insulating heat-conducting plate and the insulating heat-conducting block.

[0031] It can be seen that the heat generated by the double-layer winding can be transferred to the insulating heat conductive plate, and then transferred to the cooling pipe through the insulating heat conductive block, or directly transferred to the cooling pipe through the insulating heat conductive block, so that the cooling medium in the cooling pipe forces convection to dissipate the heat. This heat dissipation path has a small thermal resistance, high heat transfer efficiency, and good heat dissipation effect.

[0032] The beneficial effects of the magnetic pole module arranged in this way mainly include: compared with the traditional magnetic pole module, it is affected by the internal insulating film and resin and other materials with low thermal conductivity, and has a lower thermal conductivity. The heat generated inside the winding under large load cannot be dissipated in time, resulting in serious heating of the magnetic pole winding or even damage. The magnetic pole module provided in the embodiment of the present 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 greatly reduced during the transfer process, thereby improving the thermal conductivity of the winding. By adding cooling pipes and using cooling medium convection heat dissipation to dissipate the heat, the heat dissipation effect is significantly enhanced, thereby solving the problems of poor heat dissipation performance and limited load-bearing capacity improvement of the traditional magnetic pole module and the suspended electromagnet module with the magnetic pole module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] FIG1 is a schematic structural diagram of a magnetic pole module in an embodiment of the present application;

[0035] FIG2 is a cross-sectional view of the magnetic pole module shown in FIG1 ;

[0036] FIG3 is a schematic diagram of a heat dissipation path of the magnetic pole module shown in FIG2 ;

[0037] FIG4 is a schematic diagram of the assembly of the insulating heat-conducting block and the iron core in the magnetic pole module shown in FIG1 ;

[0038] FIG5 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 FIG1 ;

[0039] FIG6 is a schematic diagram of the layout of cooling pipes in the magnetic pole module shown in FIG1;

[0040] FIG7 is a schematic diagram of the structure of a double-layer winding in the magnetic pole module shown in FIG1;

[0041] FIG8 is a schematic diagram of the structure of the connecting member in the double-layer winding shown in FIG7;

[0042] FIG9 is a schematic diagram of the winding directions of the first layer winding and the second layer winding in the double-layer winding shown in FIG7 ;

[0043] FIG10 is a schematic structural diagram of a first suspension electromagnet module in an embodiment of the present application;

[0044] FIG11 is a schematic diagram of the layout of the heat sink in the first suspension electromagnet module shown in FIG10;

[0045] FIG. 12 is a schematic diagram of the structure of a second suspension electromagnet module in an embodiment of the present application.

[0046] in:

[0047] 10-pole module, 11-iron core, 111-groove, 12-double-layer winding, 121-first layer winding, 122-second layer winding, 13-insulating heat conductive block, 131-accommodating groove, 132-slot, 14-insulating heat conductive plate, 141-plug-in part, 15-cooling pipe, 151-coil body, 152-liquid inlet pipe, 153-liquid 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;

[0048] 20-U-shaped box girder;

[0049] 30-Media storage box;

[0050] 40-circulation pump;

[0051] 50- heat sink;

[0052] 60-water distribution pipe;

[0053] 70-Refrigeration equipment. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0056] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0057] Please refer to Figures 1 to 12, Figure 1 is a structural schematic diagram of the pole module in the embodiment of the present application; Figure 2 is a cross-sectional view of the pole module shown in Figure 1; Figure 3 is a schematic diagram of the heat dissipation path of the pole module shown in Figure 2; Figure 4 is a schematic diagram of the assembly of the insulating heat conductive block and the iron core in the pole module shown in Figure 1; Figure 5 is a schematic diagram of the assembly of the insulating heat conductive plate and the insulating heat conductive block in the pole module shown in Figure 1; Figure 6 is a schematic diagram of the layout of the cooling pipe in the pole module shown in Figure 1; Figure 7 is a structural schematic diagram of the double-layer winding in the pole module shown in Figure 1; Figure 8 is a structural schematic diagram of the connecting piece 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 suspended electromagnet module in the embodiment of the present application; Figure 11 is a schematic diagram of the layout of the heat sink in the first type of suspended electromagnet module shown in Figure 10; Figure 12 is a structural schematic diagram of the second type of suspended electromagnet module in the embodiment of the present application.

[0058] The magnetic pole module 10 provided in the embodiment of the present application 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 .

[0059] Among them, the iron core 11 is provided with 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 is provided with a receiving groove 131, and the insulating heat-conducting plate 14 is arranged between the double-layer windings 12. The insulating heat-conducting plate 14 is used to replace the insulating paper previously arranged between the double-layer windings 12. The thickness of the insulating heat-conducting plate 14 is 1mm~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 pass 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.

[0060] It can be seen that the heat generated by the double-layer winding 12 can be transferred to the insulating heat conductive plate 14, and then transferred to the cooling pipe 15 through the insulating heat conductive block 13, or directly transferred to the cooling pipe 15 through the insulating heat conductive block 13, so that the cooling medium in the cooling pipe 15 forces convection to dissipate the heat. Such a heat dissipation path has a small thermal resistance, high heat transfer efficiency, and good heat dissipation effect.

[0061] It should be noted that the heat dissipation paths of the original magnetic pole structure include: a first path and a second path, wherein the first path is the heat inside the winding transferred laterally to the epoxy resin on the outer surface (the epoxy resin encapsulated on the outside of the magnetic pole module 10), and then dissipated by the running wind, and the second path is the heat transferred laterally to the iron core 11, and then transferred to the U-shaped box beam 20 through the flange 18, and then dissipated by the running wind. The heat of both paths needs to be transferred laterally in the winding, and the thermal resistance of the epoxy resin outside the iron core 11 and the double-layer winding 12 is relatively large. At the same time, a layer of high-performance insulating paper is placed between the double-layer winding 12, and the gap is filled with resin, which has a good insulation effect. However, the thermal conductivity of the resin and the insulating paper is low, the thermal resistance is large, and the heat dissipation performance is poor. The heat inside the winding cannot be dissipated in time, the heat transfer efficiency is very low, the heat dissipation effect is poor, and it will quickly overheat under high power conditions.

[0062] Compared with the traditional setting method, the heat dissipation path of the magnetic pole module 10 provided in the embodiment of the present application is: the first path is the same as the original magnetic pole (that is, the heat inside the winding is transferred horizontally to the epoxy resin on the outer surface and dissipated by the running wind), while the second path has changed. As shown in Figure 3, the heat of the double-layer winding 12 is vertically transferred from point A to the insulating heat conductive plate 14, then to the insulating heat conductive block 13, and then to the cooling pipe 15, and the heat is dissipated by forced convection of the cooling medium.

[0063] It should be emphasized that a vertical heat dissipation path is added to the second path, and the heat transfer process passes through the insulating heat conductive plate 14, so the thermal resistance of the entire path is greatly reduced and the heat dissipation effect is significantly enhanced.

[0064] In this way, the magnetic pole module 10 provided in the embodiment of the present application optimizes the internal structure of the magnetic pole and increases the heat dissipation path. Specifically, by adding the insulating heat conductive block 13 and the insulating heat conductive plate 14, the thermal resistance of the heat generated by the double-layer winding 12 is greatly reduced during the transfer process, thereby improving the thermal conductivity of the winding. By adding the cooling pipe 15 and using the cooling medium to dissipate the heat by convection, the heat dissipation effect is significantly enhanced, thereby solving the problems of poor heat dissipation performance and limited load-bearing capacity improvement of the traditional magnetic pole module 10 and the suspended electromagnet module having the magnetic pole module 10.

[0065] In order to facilitate the connection between the insulating heat conductive block 13 and the insulating heat conductive block 13, the insulating heat conductive block 13 is provided with a slot 132, the insulating heat conductive plate 14 is a ring structure, and the side arm of the insulating heat conductive plate 14 extends along the inner direction to form a plug-in portion 141, and the plug-in portion 141 is plugged into the slot 132 to connect the insulating heat conductive plate 14 to the insulating heat conductive block 13.

[0066] The slot 132 can be an elongated slot, and the length of the slot 132 should be smaller than the length of the insulating heat-conducting block 13. In this way, the insulating heat-conducting block 13 has a reserved elongated slot, and the insulating heat-conducting plate 14 is inserted into the elongated slot reserved for the insulating heat-conducting block 13 through the plug-in portion 141, thereby ensuring the stability of the connection between the insulating heat-conducting blocks 13 and the insulating heat-conducting blocks 13.

[0067] The insulating heat conductive plate 14 is a rectangular ring structure and can be formed by splicing two parts. In this way, the insulating heat conductive plate 14 is arranged along the outer circumference of the iron core 11, which can greatly improve the heat conduction efficiency of the double-layer winding 12.

[0068] In order to improve the heat transfer efficiency, the gap between the insulating heat-conducting block 13 and the groove 111, the gap between the cooling tube 15 and the accommodating groove 131, and the gap between the plug-in part 141 and the slot 132 are all filled with a heat-conducting layer, which can be a high thermal conductivity silicone grease layer. This arrangement can ensure full contact between the components and greatly improve the heat transfer efficiency.

[0069] In some embodiments, the number of the insulating heat-conducting blocks 13 is two, and accordingly, 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 .

[0070] Specifically, considering that the double-layer winding 12 generates more heat in the length direction, grooves 111 are provided on the two side walls in the length direction of the core 11 , and two insulating heat-conducting blocks 13 are respectively embedded in the two grooves 111 .

[0071] It should be noted that in order to facilitate ground insulation and winding, it is necessary to ensure that the surface of the iron core 11 is 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, it can ensure that the surface of the iron core 11 is flat, which can improve the insulation reliability.

[0072] Correspondingly, the cooling tube 15 includes two coil bodies 151, and both coil bodies 151 are S-shaped, or are a multi-section continuous S-shaped structure, which can increase the contact area between the cooling tube 15 and the insulating heat-conducting block 13, thereby improving the heat dissipation efficiency.

[0073] The two coil bodies 151 are respectively accommodated in the accommodating grooves 131 of the two insulating heat-conducting blocks 13 , and the structure of the accommodating grooves 131 is adapted to the structure of the corresponding coil body 151 .

[0074] Of course, according to actual needs, the cooling tube 15 can be a copper tube, which is bent and wound into shape by special equipment and then inserted into the space reserved for the insulating heat-conducting block 13. The cooling tube 15 and the insulating heat-conducting block 13 are integrated through interference fit, and the remaining gaps are filled with high thermal conductivity silicone grease. On the one hand, it ensures that the two are in full contact and improves the heat transfer capacity. On the other hand, the insulating heat-conducting block 13 can protect the copper tube and prevent it from deformation during installation.

[0075] In addition, the cooling tube 15 is led out through an external copper tube, which is led out through the slot at the bottom of the iron core 11 and is opposite to the linear generator lead 110. A total of four external copper tubes can be provided, 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 one inlet and one outlet.

[0076] In some embodiments, the cooling pipe 15 further includes a liquid inlet pipe 152, a liquid outlet pipe 153 and a connecting pipe assembly. The liquid inlet pipe 152 and the liquid outlet pipe 153 are respectively connected to the coil bodies 151 on both sides. The connecting pipe assembly is used to connect the coil bodies 151 on both sides.

[0077] In this way, the liquid inlet pipe 152 is used to pass the cooling medium into one of the coil bodies 151, and the cooling medium flows in the two coil bodies 151 through the connecting pipe assembly, thereby taking away the heat transferred to the cooling tube 15, and the liquid outlet pipe 153 is used to discharge the cooling medium after heat exchange to the outside of the cooling tube 15. Of course, both the liquid inlet pipe 152 and the liquid outlet pipe 153 can be set as external copper pipes.

[0078] Of course, a refrigeration circulation system can be connected between the two coil bodies 151, and different types of heat dissipation media, such as nitrogen, Freon, oil, etc., can be optionally filled in the pipeline. In this way, a circulating flow of the cooling medium can be formed, which is continuously circulated through the external unit. The circulating flow of the cooling medium can take away the heat transferred to the cooling pipe 15, that is, the winding heat transferred from the insulating heat conductive plate 14 can be dissipated, thereby reducing the internal temperature of the magnetic pole and greatly improving the heat dissipation efficiency.

[0079] In some embodiments, the insulating heat-conducting plate 14 and the insulating heat-conducting block 13 each 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.

[0080] Taking the insulating heat conductive plate 14 as an example, a special high thermal conductivity insulating material boron nitride is sprayed on the surface of the substrate. The spraying is carried out under high temperature and high pressure environment, and the spraying is carried out at least three times. After each spraying is completed, it needs to be left to dry before the next spraying. Special tooling is designed for the sprayed samples to ensure uniform and complete spraying. The overall thickness of the coating is less than 80μm, and the DC withstand voltage strength is greater than 4kV. Or the method of bonding a special high thermal conductivity insulating material boron nitride film is adopted. First, the boron nitride is pressed into a film material 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 method of the insulating heat conductive block 13 is the same as that of the insulating heat conductive plate 14.

[0081] The insulating heat-conducting plate 14 can be made of a copper plate. Of course, the copper plate can also be replaced with other materials, such as aluminum plates, steel plates and other materials with excellent thermal conductivity.

[0082] In this way, the insulating paper 16 is no longer placed between the double-layer windings 12, but a layer of copper plate sprayed with insulating thermal conductive material, which can not only play a higher voltage resistance role, but also transfer the heat generated by the upper and lower windings horizontally to the core 11 position.

[0083] In order to ensure the withstand voltage of the double-layer winding 12 to the ground, an insulating paper 16 is provided between the double-layer winding 12 and the iron core 11 .

[0084] In order to further improve the heat dissipation efficiency, the entire magnetic pole module 10 is potted with epoxy resin, and the gaps between all the internal components of the magnetic pole module 10 are filled with epoxy resin to further improve the heat transfer efficiency.

[0085] In addition, a slot is opened on the top of the iron core 11 and a linear generator coil 19 is installed, which is led out through a linear generator lead 110. The linear generator coil 19 uses alternating magnetic flux to achieve contactless power generation during the movement of the vehicle. The linear generator lead 110 is led out through the slot at the bottom of the iron core 11.

[0086] In some embodiments, the double-layer winding 12 includes a first-layer winding 121 and a second-layer winding 122 , and the first-layer winding 121 and the second-layer winding 122 are connected in series via a connector 17 .

[0087] Among them, the connecting member 17 is sleeved on the outer periphery of the iron core 11, and the connecting member 17 includes a first layer connecting structure 171 and a second layer connecting structure 172 connected to each other. The first layer connecting structure 171 is located above the second layer connecting structure 172, and the first ends of the first layer connecting structure 171 and the second layer connecting structure 172 are integrally connected, and the second ends of the first layer connecting structure 171 and the second layer connecting structure 172 are connected to each other, and 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, and 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 on the outside of the first layer connecting structure 171 along a first direction starting from the first connection point 1711, and the second layer winding 122 is wound on the outside of the second layer connecting structure 172 along a second direction starting from the second connection point 1721, and the first direction and the second direction are opposite directions.

[0088] In some embodiments, the connector 17 is extended to be Z-shaped, and the Z-shaped connector 17 is bent to form a through hole for the iron core 11 to be nested, and the structure of the through hole is adapted to the structure of the iron core 11. The first layer of winding 121 is ultrasonically welded to the first connection point 1711 and is wound counterclockwise around the outside of the first layer of connection structure 171, and the second layer of winding 122 is ultrasonically welded to the second connection point 1721 and is wound clockwise around the outside of the second layer of connection structure 172.

[0089] More specifically, the winding is composed of an aluminum foil and an insulating film alternately, that is, a layer of insulating film and a layer of aluminum foil, which can improve the filling rate of the winding window, increase the number of winding turns, and improve the magnetic pole performance. The width of the insulating film is slightly higher than that of the aluminum foil, and the single side is 1~1.5mm longer than the aluminum foil to ensure insulation reliability. The winding is a double-layer structure. The upper and lower double-layer structure can improve the filling rate of the aluminum foil while ensuring the number of turns, and the thermal conductivity is higher. The upper and lower double-layer aluminum foils are connected in series through the connector 17. The upper winding is wound outward from the first connection point 1711 of the connector 17, and the lower winding is wound outward from the second connection point 1721 of the connector 17 (opposite to the upper winding direction). This ensures that the power supply connectors of the entire winding are all located outside the winding, which is convenient for joint welding and improves safety (one of the two connectors of the single-layer winding is located inside the winding close to the iron core 11, which is easy to burn the insulating paper 16).

[0090] The present application provides a suspension electromagnet module for a maglev vehicle, including a U-shaped box beam 20 and a magnetic pole module 10 as described in the above specific embodiment. The magnetic pole module 10 is fixed to the U-shaped box beam 20 via a flange 18 .

[0091] In some embodiments, two groups of magnetic pole modules 10 are provided, and the suspension electromagnet module also includes a medium storage box 30 and two circulation pumps 40, wherein the medium storage box 30 is arranged in the U-shaped box beam 20 and is connected to the cooling pipes 15 of the two groups of magnetic pole modules 10, and the medium storage box 30 is used to store liquid cooling medium; the two circulation pumps 40 are arranged in the U-shaped box beam 20, wherein one of the circulation pumps 40 is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box 30 and one group of magnetic pole modules 10, and the other circulation pump 40 is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box 30 and the other group of magnetic pole modules 10.

[0092] In this embodiment, the refrigeration system is integrated inside the U-shaped box beam 20, copper tubes are fixed inside the U-shaped box beam 20, and the external copper tubes (water inlet and water outlet) of the pole module 10 are connected to the water distribution pipe 60, and 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.

[0093] In addition, a plurality of heat sinks 50 are installed on the outside of the U-shaped box beam 20, and the running wind cools the cooling medium through the heat sink 50. This embodiment utilizes the running wind and does not require an additional cooling fan, thus saving energy.

[0094] 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.

[0095] To facilitate automatic control, the suspension electromagnet module also includes a temperature detection module and a control module. The temperature detection module is arranged in the U-shaped box beam 20, and is used to detect the temperature inside the U-shaped box beam 20. The control module is connected to the temperature detection module and the circulation pump 40 for communication, and is used to control the circulation pump 40 to open and close according to the temperature value detected by the temperature detection module.

[0096] By setting a temperature detection module in the U-shaped box beam 20, the temperature change inside the box beam can be monitored in real time, thereby ensuring the safety and stability of the electromagnet structure. The control module controls the opening and closing of the circulation pump 40 according to the temperature value detected by the temperature detection module, so that the operation of the cooling system can be adjusted according to the actual temperature demand, and the energy efficiency and cost-effectiveness can be improved. The communication connection between the temperature detection module and the control module can realize automatic control, reduce manual intervention, and improve the convenience and accuracy of operation.

[0097] The present application also provides a magnetic levitation vehicle, comprising the suspension electromagnet module described in the above embodiment.

[0098] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0099] The magnetic pole module, suspension electromagnet module and maglev vehicle provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A magnetic pole module, characterized in that: include: An iron core, wherein the iron core is provided with a groove; A double-layer winding, 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 containing groove; An insulating heat-conducting plate, disposed between the double-layer windings and connected to the insulating heat-conducting block; A cooling pipe, at least part of the structure of which is accommodated in the accommodating groove, and the cooling pipe is used to pass 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 according to claim 1, characterized in that: The insulating heat conductive block is provided with a slot, the insulating heat conductive plate is a ring structure, the side arm of the insulating heat conductive plate extends inwardly to form a plug-in portion, and the plug-in portion is plugged into and matched with the slot to connect the insulating heat conductive plate to the insulating heat conductive block.

3. The magnetic pole module according to claim 2, characterized in that: The gap between the insulating heat-conducting block and the groove, the gap between the cooling pipe and the accommodating groove, and the gap between the plug-in portion and the slot are all filled with a heat-conducting layer.

4. The magnetic pole module according to claim 1, characterized in that: The number of the 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 comprises two coil bodies, both of which are S-shaped, and the two coil bodies are respectively accommodated in the accommodating grooves of the two insulating heat-conducting blocks.

5. The magnetic pole module according to claim 4, characterized in that: The cooling pipe also includes a liquid inlet pipe, a liquid outlet pipe and a connecting pipe assembly. The liquid inlet pipe and the liquid outlet pipe are respectively connected to the coil bodies on both sides. The connecting pipe assembly is used to connect the coil bodies on both sides.

6. The magnetic pole module according to claim 1, characterized in that: The insulating heat-conducting plate and the insulating heat-conducting block each include a substrate and at least three insulating heat-conducting layers arranged on the substrate; Insulating paper is arranged between the double-layer winding and the iron core.

7. The magnetic pole module according to any one of claims 1 to 6, characterized in that: The double-layer winding comprises a first-layer winding and a second-layer winding, and the first-layer winding and the second-layer winding are connected in series through a connecting piece; The connecting piece is sleeved on the outer circumference of the iron core, and the connecting piece includes a first connecting structure and a second connecting structure that are connected to each other, the first connecting structure is located above the second connecting structure, the first ends of the first connecting structure and the second connecting structure are integrally connected, the second ends of the first connecting structure and the second connecting structure are connected to each other, and the second end of the first connecting structure is provided with a first connecting point for connecting the first layer of winding, and the second end of the second connecting structure is provided with a second connecting point for connecting the second layer of winding, the first layer of winding is wound around the outside of the first layer of connecting structure along a first direction starting from the first connecting point, and the second layer of winding is wound around the outside of the second layer of connecting structure along a second direction starting from the second connecting point, and the first direction and the second direction are opposite directions.

8. A suspension electromagnet module for a maglev vehicle, comprising a U-shaped box beam, characterized in that: It also includes a magnetic pole module as described in any one of claims 1 to 7, wherein the magnetic pole module is fixed to the U-shaped box beam through a flange.

9. The suspension electromagnet module according to claim 8, characterized in that: The magnetic pole modules are provided in two groups, and the suspension electromagnet module further comprises: A medium storage box is arranged in the U-shaped box beam and is connected to the cooling pipes of the two groups of magnetic pole modules, and is used to store liquid cooling medium; Two circulation pumps are arranged in the U-shaped box beam, one of which is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box and one group of the magnetic pole modules, and the other circulation pump is used to provide circulation power so that the cooling medium forms a refrigeration cycle between the medium storage box and another group of the magnetic pole modules; The heat sink is arranged on the outer side wall of the U-shaped box beam and is used for dissipating the heat of the cooling medium inside the U-shaped box beam.

10. The suspension electromagnet module according to claim 9, characterized in that: The suspension electromagnet module also includes: A temperature detection module is provided in the U-shaped box girder and is used to detect the temperature inside the U-shaped box girder; The control module is connected to the temperature detection module and the circulation pump for controlling the circulation pump to open and close according to the temperature value detected by the temperature detection module.

11. A magnetic levitation vehicle, characterized in that: It comprises a suspension electromagnet module as described in any one of claims 8 to 10.

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