Stator assembly, linear motor, electromagnetic suspension, and vehicle

Abstract

A vehicle, comprising an electromagnetic suspension. The electromagnetic suspension comprises a linear motor; the linear motor comprises a stator assembly; the stator assembly comprises a mandrel, a stator core, a winding, and an adapter; the mandrel is provided with a central hole; a conducting bar is arranged in the central hole; the stator core is arranged on the periphery of the mandrel; the winding is arranged on the stator core and is provided with a lead-out wire, and the lead-out wire is located outside the mandrel; a first end of the adapter is located outside the mandrel and is connected to the lead-out wire, and a second end of the adapter passes through the wall of the mandrel and then is connected to the conducting bar.

Description

Stator assembly, linear motor, electromagnetic suspension and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application filed on March 29, 2024, application number 202410383029.6, and patent application name “Stator assembly, linear motor, electromagnetic suspension and vehicle,” all contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of vehicles, and in particular to a stator assembly, a linear motor, an electromagnetic suspension and a vehicle. Background Art

[0004] A linear motor transmits signals to the motor's stator structure through a controller to ensure normal operation. In the prior art, the motor controller and stator structure are typically connected using a swing-wire method. This involves passing a cable directly through the motor's core shaft and electrically connecting the conductive bars inside the core shaft, which are connected to the controller, to the stator structure outside the core shaft. This allows the controller to control the movement of the motor's stator structure, thereby enabling the motor to operate normally. However, the swing-wire method makes motor assembly inconvenient, and the cable, which is inserted inside and outside the core shaft during operation, is prone to wear and interference with other motor structures, resulting in low safety.

[0005] Summary of the Invention

[0006] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a stator assembly. The stator assembly of this application connects the winding lead wires to the conductive bars via an adapter, allowing the controller's current to flow normally into the motor. The provision of the adapter improves the assembly efficiency of the stator assembly and allows for multiple assembly methods.

[0007] The present application also proposes a linear motor comprising the above-mentioned stator assembly.

[0008] The present application also proposes an electromagnetic suspension comprising the above linear motor.

[0009] The present application also proposes a vehicle comprising the electromagnetic suspension.

[0010] According to the present application, the stator assembly includes a core shaft, a stator core, a winding and an adapter. The core shaft has a center hole, and a conductive bar is arranged in the center hole; the stator core is arranged on the outer periphery of the core shaft; the winding is arranged on the stator core and is provided with a lead wire, and the lead wire is located outside the core shaft; the first end of the adapter is located outside the core shaft and is connected to the lead wire, and the second end of the adapter passes through the shaft wall of the core shaft and is connected to the conductive bar.

[0011] An adapter is provided between the conductive bus and the lead wire. When the adapter is assembled, the first end of the adapter is located outside the core shaft and connected to the lead wire. The second end of the adapter passes through the core shaft wall and extends into the core shaft and connects to the conductive bus. At this point, the conductive bus is connected to the lead wire through the adapter. The current of the controller can be transferred to the lead wire after passing through the conductive bus and the adapter in sequence, and ultimately acts on the motor. The provision of the adapter realizes the electrical connection between the conductive bus and the lead wire. Unlike the prior art method of connecting by cable wire, the adapter can avoid the problem of exposed cable wires being worn, thereby improving the safety of the electrical connection between the conductive bus and the lead wire. In addition, the method of connecting the conductive bar and the lead wire through an adapter makes assembly more convenient. Specifically, the two ends of the adapter are respectively located on the inner and outer sides of the shaft wall. During assembly, the second end of the adapter can be connected to the conductive bar first, and the first end can be fixedly connected to the lead wire, which is convenient for assembly. At the same time, the conductive bar, the core shaft and the adapter can be made into a whole, and the stator core and the winding can be made into a whole. The two parts can then be assembled, and assembly is quick.

[0012] According to one embodiment of the present application, the end of the lead wire is provided with a first connection end surface, the first end of the adapter is provided with a second connection end surface, and the first connection end surface and the second connection end surface are welded.

[0013] According to one embodiment of the present application, the first connecting end surface and the second connecting end surface are respectively arranged parallel to the axis of the core shaft.

[0014] According to one embodiment of the present application, the adapter includes an extension portion and a first terminal portion, the extension portion is a straight line segment, a curved line segment or a broken line segment extending in the radial direction; the first terminal portion is arranged on the radial outside of the extension portion and the radial cross-sectional area of ​​the first terminal portion is larger than the cross-sectional area of ​​the extension portion, and the radial outer surface of the first terminal portion is formed with the second connection end face.

[0015] According to one embodiment of the present application, the adapter also includes: a second terminal portion, which is arranged on the radial inner side of the extension portion and is suitable for extending into the core shaft and connecting to the conductive bar; wherein the cross-sectional area of ​​the second terminal portion is larger than the cross-sectional area of ​​the extension portion.

[0016] According to one embodiment of the present application, a matching hole suitable for accommodating the second terminal portion is provided on the conductive bar.

[0017] According to one embodiment of the present application, the radial inner side surface of the second terminal portion and at least part of the radial inner side surface of the conductive bar are located in the same plane, and the radial outer side surface of the second terminal portion and at least part of the radial outer side surface of the conductive bar are located in the same plane.

[0018] According to an embodiment of the present application, the outer periphery of the conductive bar is protected by a plastic part, and a notch is formed on the plastic part to allow the second terminal portion to extend into and connect with the matching hole.

[0019] According to one embodiment of the present application, the stator assembly further includes an insulating plate, which is disposed at an end of the stator core close to the lead wire, and the extension portion is fitted onto the insulating plate.

[0020] According to one embodiment of the present application, the lead wire includes a main body section and a bending section, and the bending section is connected to the main body section; the bending section extends in a direction away from the insulating plate, and the main body section is attached to the insulating plate.

[0021] According to an embodiment of the present application, one end of the bent section away from the insulating plate is flush with one end of the first terminal portion away from the insulating plate.

[0022] According to one embodiment of the present application, a limit plate suitable for abutting against the insulating plate is formed on the core shaft, and an adapter installation channel extending radially into the core shaft is formed on the limit plate. The adapter passes through the adapter installation channel and connects the lead wire to the conductive bar.

[0023] According to one embodiment of the present application, the limiting plate includes a plurality of limiting sub-plates spaced apart in the circumferential direction of the core shaft, and the adapter installation channel is provided between two adjacent limiting sub-plates.

[0024] According to one embodiment of the present application, the stator core is constructed as a plurality of stator cores stacked in the axial direction of the core shaft, and a winding mounting slot is provided between two adjacent stator cores; the winding is provided with a first winding group, a second winding group and a third winding group, and the first winding group, the second winding group and the third winding group are respectively spaced apart in the corresponding winding mounting slots; wherein the lead wire includes: a first lead wire row, a second lead wire row and a third lead wire row, the first lead wire row extends in the axial direction and is connected to the first winding group; the second lead wire row extends in the axial direction and is connected to the second winding group; the third lead wire row extends in the axial direction and is connected to the third winding group.

[0025] According to one embodiment of the present application, the adapter is constructed in three pieces and is respectively connected to the first lead wire row, the second lead wire row, and the third lead wire row.

[0026] According to one embodiment of the present application, three wire row slots extending in the axial direction and spaced apart in the circumferential direction are formed on the outer periphery of the stator core, and the three wire row slots respectively accommodate the first lead wire row, the second lead wire row and the third lead wire row.

[0027] The linear motor according to the present application is briefly described below.

[0028] The linear motor according to the present application includes the stator assembly of the aforementioned embodiment. Since the linear motor according to the present application is provided with the stator assembly of the aforementioned embodiment, the stator assembly connects the circuit between the conductive bars and the windings via an adapter, allowing the controller current of the linear motor to be normally input into the linear motor. This adapter connection reduces the difficulty of assembling and electrically connecting the stator structure and the core shaft within the linear motor, improving assembly efficiency and facilitating subsequent maintenance and disassembly operations. Furthermore, the stator assembly has a simple and safe structure, which can reduce the number of parts and make the linear motor more reliable.

[0029] The electromagnetic suspension according to the present application is briefly described below.

[0030] The electromagnetic suspension according to the present application includes the linear motor in the above-mentioned embodiment. Since the electromagnetic suspension according to the present application is provided with the linear motor in the above-mentioned embodiment, when the linear motor is assembled with the electromagnetic suspension, the assembly efficiency of the electromagnetic suspension can be improved. At the same time, the setting of the linear motor can improve the response rate of the electromagnetic suspension, so that the electromagnetic suspension has higher integration, fewer parts and lower manufacturing costs.

[0031] The vehicle according to the present application is briefly described below.

[0032] The vehicle according to the present application includes the electromagnetic suspension in the above-mentioned embodiment. Since the vehicle according to the present application is provided with the electromagnetic suspension in the above-mentioned embodiment, when the electromagnetic suspension is assembled with the vehicle, the electromagnetic suspension can respond quickly, thereby improving the vibration reduction effect of the vehicle. At the same time, the linear motor inside the electromagnetic suspension has a higher overall structural strength and better insulation of the motor because the stator assembly can seal the welding points. Therefore, the setting of the electromagnetic suspension can further improve the safety of the vehicle.

[0033] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] FIG1 is a cross-sectional view of a linear motor according to one embodiment of the present application;

[0036] FIG2 is a structural diagram of a linear motor according to an embodiment of the present application;

[0037] FIG3 is a schematic diagram of a linear motor before glue filling according to one embodiment of the present application;

[0038] FIG4 is a schematic diagram of a linear motor after glue filling according to one embodiment of the present application;

[0039] FIG5 is a partial enlarged view of the circle A in FIG2 ;

[0040] FIG6 is a schematic diagram of the cooperation between the first terminal portion and the lead wire in FIG5 ;

[0041] FIG7 is an assembly diagram of an adapter according to one embodiment of the present application;

[0042] FIG8 is a structural diagram of an adapter according to an embodiment of the present application;

[0043] FIG9 is a top view of an adapter according to one embodiment of the present application;

[0044] FIG10 is an assembly diagram of an adapter and a conductive bar according to one embodiment of the present application;

[0045] FIG11 is an assembly diagram of a conductive bar and a plastic component according to one embodiment of the present application;

[0046] FIG12 is a cross-sectional view of a linear motor according to one embodiment of the present application;

[0047] FIG13 is a schematic diagram of a linear motor according to one embodiment of the present application;

[0048] FIG14 is a schematic diagram of an electromagnetic suspension according to one embodiment of the present application;

[0049] FIG15 is a simplified schematic diagram of a vehicle according to an embodiment of the present application.

[0050] Reference numerals:

[0051] stator assembly 1;

[0052] Core shaft 11, conductive bar 111, matching hole 1111, plastic part 112;

[0053] stator core 12;

[0054] Winding 13, lead wire 131, first connection end surface 1311, main body section 1312, bending section 1313;

[0055] Adapter 14, extension portion 141, first terminal portion 142, second connection end surface 1421, second terminal portion 143;

[0056] Insulation plate 15, limiting plate 16, adapter installation channel 161, winding installation slot 17, wire row slot 18;

[0057] Linear motor 10 , mover assembly 101 , electromagnetic suspension 20 , and vehicle 30 . DETAILED DESCRIPTION

[0058] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0059] A linear motor transmits signals to the motor's stator structure through a controller to ensure normal operation. In the prior art, the motor controller and stator structure are typically connected using a swing-wire method. This involves passing a cable directly through the motor's core shaft and electrically connecting the conductive bars inside the core shaft, which are connected to the controller, to the stator structure outside the core shaft. This allows the controller to control the movement of the motor's stator structure, thereby enabling the motor to operate normally. However, the swing-wire method makes motor assembly inconvenient, and the cable, which is inserted inside and outside the core shaft during operation, is prone to wear and interference with other motor structures, resulting in low safety.

[0060] A stator assembly 1 according to an embodiment of the present application will be described below with reference to FIG. 1 to FIG. 15 .

[0061] According to the present application, the stator assembly 1 includes a core shaft 11, a stator core 12, a winding 13 and an adapter 14. The core shaft 11 has a center hole, and a conductive bar 111 is arranged in the center hole; the stator core 12 is arranged on the outer periphery of the core shaft 11; the winding 13 is arranged on the stator core 12 and is provided with a lead wire 131, and the lead wire 131 is located outside the core shaft 11; the first end of the adapter 14 is located outside the core shaft 11 and is connected to the lead wire 131, and the second end of the adapter 14 passes through the shaft wall of the core shaft 11 and is connected to the conductive bar 111.

[0062] The stator assembly 1 according to the present application is provided with a core shaft 11 having a central hole formed therein. A conductive bar 111 electrically connected to the motor controller can be mounted in the central hole. The provision of the core shaft 11 prevents the conductive bar 111 from being exposed, thereby improving the safety of the conductive bar 111. A stator core 12 is disposed on the periphery of the core shaft 11, covering at least a portion of the core shaft 11. A winding 13 is wound around the stator core 12, and a lead wire 131 is provided on the winding 13, communicating with the winding 13. The lead wire 131 is used to electrically connect to the conductive bar 111 so that the current from the controller can be properly input into the motor.

[0063] As shown in FIG2 , an adapter 14 is provided between the conductive bar 111 and the lead wire 131. When the adapter 14 is assembled, the first end of the adapter 14 is located outside the core shaft 11 and is connected to the lead wire 131. The second end of the adapter 14 passes through the shaft wall of the core shaft 11 and extends into the core shaft 11 and is connected to the conductive bar 111. At this point, the conductive bar 111 is connected to the lead wire 131 through the adapter 14. The current of the controller can be transmitted to the lead wire 131 after passing through the conductive bar 111 and the adapter 14 in sequence and finally acts on the motor. The provision of the adapter 14 realizes the electrical connection between the conductive bar 111 and the lead wire 131. Unlike the prior art method of connecting by cable wire, the adapter 14 can avoid the problem of exposed cable wires and wear, thereby improving the safety of the electrical connection between the conductive bar 111 and the lead wire 131. In addition, the conductive bar 111 is connected to the lead wire 131 through the adapter 14, which makes assembly more convenient. Specifically, the two ends of the adapter 14 are respectively located on the inner and outer sides of the shaft wall. During assembly, the second end of the adapter 14 can be connected to the conductive bar 111 first, and the first end can be fixedly connected to the lead wire 131, which is convenient for assembly. At the same time, the conductive bar 111, the core shaft 11 and the adapter 14 can be made into a whole, and the stator core 12 and the winding 13 can be made into a whole, and the two parts can be assembled, which is quick to assemble.

[0064] According to one embodiment of the present application, the end of the lead wire 131 is provided with a first connection end surface 1311, the first end of the adapter 14 is provided with a second connection end surface 1421, and the first connection end surface 1311 and the second connection end surface 1421 are welded.

[0065] Specifically, the lead wire 131 is provided with a first connection end face 1311 at the end portion connected to the adapter 14. At the same time, a second connection end face 1421 is formed on the first end of the adapter 14. When the adapter 14 is assembled, the first connection end face 1311 can be adhered to the second connection end face 1421 and fixed by welding or the like. The setting of the first connection end face 1311 and the second connection end face 1421 can improve the stability of the connection between the adapter 14 and the lead wire 131.

[0066] According to one embodiment of the present application, the first connection end face 1311 and the second connection end face 1421 are respectively arranged parallel to the axis of the core shaft 11. It should be noted that when the adapter 14 is assembled with the lead wire 131, that is, when the first connection end face 1311 and the second connection end face 1421 are attached and welded, the first connection end face 1311 and the second connection end face 1421 can respectively remain parallel to the axis of the core shaft 11. Since the adapter 14 will pass through the axial wall of the core shaft 11 after assembly, it can be understood that the adapter 14 extends in the radial direction of the core shaft 11. At this time, the first connection end face 1311 is parallel to the core shaft 11, which can improve the stability of the connection between the lead wire 131 and the adapter 14.

[0067] According to one embodiment of the present application, the adapter 14 includes an extension portion 141 and a first terminal portion 142, the extension portion 141 is a straight line segment, a curved line segment or a broken line segment extending in the radial direction; the first terminal portion 142 is arranged on the radial outside of the extension portion 141 and the radial cross-sectional area of ​​the first terminal portion 142 is larger than the cross-sectional area of ​​the extension portion 141, and the radial outer surface of the first terminal portion 142 is formed with a second connecting end face 1421.

[0068] Specifically, the adapter 14 is provided with an extension portion 141 and a first terminal portion 142, wherein the extension portion 141 passes through the shaft wall of the core shaft 11 and extends in the radial direction. The extension portion 141 can be reasonably set to a combination of one or more of a straight segment, a curved segment, and a broken line segment according to the assembly position. For example, when other structures of the motor are assembled at the arrangement position of the extension portion 141, the extension portion 141 can be in the form of a curved segment to avoid the other structures; when the position where the extension portion 141 passes through the shaft wall of the core shaft 11 is circumferentially misaligned with the first connection end face 1311 of the lead wire 131, the extension portion 141 can be in the form of a broken line segment so that the second connection end face 1421 can fit the first connection end face 1311. The extension design allows the extension portion 141 to adapt to different models of motors or installation schemes in different situations, and has better versatility.

[0069] A first terminal portion 142 is provided at the radial outer end of the extension portion 141, and the radial outer surface of the first terminal portion 142 is formed with the second connection end face 1421 in the above embodiment, wherein the radial cross-sectional area of ​​the first terminal portion 142 is larger than the cross-sectional area of ​​the extension portion 141. Here, the radial cross-sectional area of ​​the first terminal portion 142 can also be understood as the area of ​​the second connection end face 1421. Therefore, the setting of the first terminal portion 142 increases the area of ​​the second connection end face 1421, that is, increases the matching area between the adapter 14 and the lead wire 131, and improves the stability of the matching between the adapter 14 and the lead wire 131.

[0070] According to one embodiment of the present application, the adapter 14 further includes: a second terminal portion 143, which is disposed radially inward of the extension portion 141 and is adapted to extend into the core shaft 11 and connect to the conductive bar 111; wherein the cross-sectional area of ​​the second terminal portion 143 is greater than the cross-sectional area of ​​the extension portion 141. The adapter 14 is provided with the second terminal portion 143 at the radially inner end of the extension portion 141. The second terminal portion 143 can be mated and connected to the conductive bar 111, and the connection method can be plug-in or surface-to-surface bonding. At the same time, the cross-sectional area of ​​the second terminal portion 143 is greater than the cross-sectional area of ​​the extension portion 141. Similar to the first terminal portion 142, the design of the second terminal portion 143 increases the mating area between the adapter 14 and the conductive bar 111, which can improve the stability of the connection between the adapter 14 and the conductive bar 111.

[0071] According to one embodiment of the present application, a matching hole 1111 suitable for accommodating the second terminal portion 143 is provided on the conductive bar 111. During assembly, at least a portion of the second terminal portion 143 extends into the matching hole 1111. The matching hole 1111 can limit the second terminal portion 143 in the axial direction, thereby improving the stability of the matching between the second terminal portion 143 and the conductive bar 111. At the same time, the matching hole 1111 can play a role in positioning the second terminal portion 143 before welding, so that the strength after welding is higher, and it is ensured that there is no air gap at the weld.

[0072] According to one embodiment of the present application, the radial inner side surface of the second terminal portion 143 and at least part of the radial inner side surface of the conductive bar 111 are located in the same plane, and the radial outer side surface of the second terminal portion 143 and at least part of the radial outer side surface of the conductive bar 111 are located in the same plane.

[0073] The second terminal portion 143 and the conductive bar 111 can be mated together by welding after face-to-face contact. Specifically, when at least a portion of the second terminal portion 143 extends into the mating hole 1111, the radially inner side surface of the second terminal portion 143 can be coplanar with the radially inner side surface of the conductive bar 111. At this time, the radially outer side surface of the second terminal portion 143 can be coplanar with the radially outer side surface of the conductive bar 111. During laser welding, the coplanarity between the second terminal portion 143 and the conductive bar 111 ensures that the laser beam enters in a parallel state. The weld formed by the contact surface of the second terminal portion 143 and the conductive bar 111 is evenly illuminated, achieving the best welding effect. At the same time, the coplanarity requires a smaller axial dimension of the mating hole 1111, reducing the space required for the opening of the core shaft 11.

[0074] According to one embodiment of the present application, the outer periphery of the conductive bar 111 is protected by a plastic part 112, and a notch is provided on the plastic part 112 to allow the second terminal portion 143 to extend into and connect with the matching hole 1111. The outer periphery of the conductive bar 111 can be provided with a plastic part 112 that covers at least a portion of the conductive bar 111. The plastic part 112 can protect the conductive bar 111 and prevent the conductive bar 111 from contacting other structures in the core shaft 11 and causing wear. At the same time, the plastic part 112 can also prevent the conductive bar 111 from leaking electricity, thereby ensuring the efficiency of the conductive bar 111 in transmitting electrical signals. The plastic part 112 is provided with a notch, and at least a portion of the second terminal portion 143 can extend into the matching hole 1111 through the notch and connect with the matching hole 1111, thereby increasing the creepage distance between the conductive bar 111 and the stator core 12.

[0075] According to one embodiment of the present application, the stator assembly 1 further includes an insulating plate 15, which is disposed at the end of the stator core 12 near the lead wire 131, and the extension 141 is affixed to the insulating plate 15. The stator assembly 1 is provided with the insulating plate 15 at the end of the stator core 12 near the lead wire 131. During assembly, the insulating plate 15 can abut against the stator core 12, and the extension 141 is affixed to the surface of the insulating plate 15 on the side facing away from the stator core 12. The provision of the insulating plate 15 can prevent the extension 141 from directly contacting the stator core 12 and causing electrical signal leakage, thereby ensuring that the electrical signal transmitted in the extension 141 can enter the lead wire 131, thereby ensuring that the current of the controller can be normally input to the motor.

[0076] According to one embodiment of the present application, the lead wire 131 includes a main body section 1312 and a bent section 1313, with the bent section 1313 connected to the main body section 1312. The bent section 1313 extends away from the insulating plate 15, while the main body section 1312 is affixed to the insulating plate 15. Specifically, the lead wire 131 includes the main body section 1312 affixed to the insulating plate 15. The bent section 1313 is provided at the end of the main body section 1312 near the adapter 14, extending axially away from the insulating plate 15. The bent section 1313 is formed with the first connecting end surface 1311 described in the above-described embodiment. The provision of the bent section 1313 increases the area of ​​the first connecting end surface 1311, thereby improving the stability of the connection between the lead wire 131 and the adapter 14.

[0077] According to one embodiment of the present application, the end of the bent section 1313 away from the insulating plate 15 is flush with the end of the first terminal portion 142 away from the insulating plate 15. A first connecting end surface 1311 is formed on the bent section 1313, and a second connecting end surface 1421 is formed on the first terminal portion 142. The flushing of the end of the bent section 1313 away from the insulating plate 15 with the end of the first terminal portion 142 away from the insulating plate 15 prevents misalignment between the first connecting end surface 1311 and the second connecting end surface 1421 when they are attached, thereby ensuring the transmission of electrical signals between the adapter 14 and the lead wire 131.

[0078] According to one embodiment of the present application, a limit plate 16 suitable for abutting against the insulating plate 15 is formed on the core shaft 11, and an adapter mounting channel 161 is formed on the limit plate 16 and extends radially into the core shaft 11. The adapter 14 passes through the adapter mounting channel 161 and connects the lead wire 131 to the conductive bar 111.

[0079] As shown in FIG2 , the core shaft 11 is provided with a radially protruding stopper plate 16. This stopper plate 16 can abut against the insulating plate 15 to improve the assembly stability of the insulating plate 15, while also providing axial positioning for the stator core 12. An adapter mounting channel 161 is formed on the stopper plate 16 and extends into the core shaft 11. This channel connects the interior of the core shaft 11 with the exterior of the core shaft 11, and reserves space for the assembly of the adapter 14. The adapter 14 can pass through the channel 161 into the core shaft 11 and connect to the conductive bar 111, thereby achieving electrical connection between the conductive bar 111 and the lead wire 131.

[0080] According to one embodiment of the present application, the limiting plate 16 includes a plurality of limiting sub-plates spaced apart in the circumferential direction of the core shaft 11, and an adapter mounting channel 161 is provided between two adjacent limiting sub-plates. Specifically, the limiting plate 16 is constructed as a plurality of limiting sub-plates that cooperate with each other, and the plurality of limiting sub-plates are spaced apart in the circumferential direction of the outer peripheral wall of the core shaft 11. The adapter mounting channel 161 can be provided between two adjacent limiting sub-plates. At least a portion of the adapter mounting channel 161 is formed by the gap between the two adjacent limiting sub-plates, which can reduce the difficulty of processing the adapter mounting channel 161 and, at the same time, ensure the structural strength of the core shaft 11.

[0081] According to one embodiment of the present application, the stator core 12 is constructed as a plurality of stator cores 12 stacked in the axial direction of the core shaft 11, and a winding mounting groove 17 is provided between two adjacent stator cores 12; the winding 13 is provided with a first winding group, a second winding group and a third winding group, and the first winding group, the second winding group and the third winding group are respectively arranged in the corresponding winding mounting grooves 17 at intervals; wherein, the lead wire 131 includes a first lead wire row, a second lead wire row and a third lead wire row, the first lead wire row extends in the axial direction and is connected to the first winding group; the second lead wire row extends in the axial direction and is connected to the second winding group; the third lead wire row extends in the axial direction and is connected to the third winding group.

[0082] Specifically, the stator core 12 is constructed as a plurality of stator cores 12 and is stacked in the axial direction of the core shaft 11 and sleeved on the outer circumference of the core shaft 11. A winding installation slot 17 for installing the winding 13 can be defined between two adjacent stator cores 12. Compared with the solution of directly slotting the winding 13 into a larger core, the winding installation slot 17 defined between two adjacent stator cores 12 can reduce the difficulty of processing the winding installation slot 17. At the same time, the multiple stator cores 12 can define multiple winding installation slots 17. The multiple winding installation slots 17 enable the stator assembly 1 to be equipped with multiple windings 13. For example, the stator assembly 1 is provided with a first winding group, a second winding group, and a third winding group. The first winding group, the second winding group, and the third winding group are respectively arranged in corresponding winding installation slots 17 to avoid mutual interference between the three windings 13. The arrangement of three windings 13 can more efficiently utilize power, reduce energy loss, and improve efficiency. At the same time, after the three-phase winding 13 is assembled, the position of the stator core 12 structure of the entire stator assembly 1 has a certain symmetry, which makes installation and maintenance more convenient.

[0083] Lead wires 131 include a first lead wire row, a second lead wire row, and a third lead wire row. The three lead wire rows extend axially. The first lead wire row connects the first winding group to the conductive bar 111 via the adapter 14; the second lead wire row connects the second winding group to the conductive bar 111 via the adapter 14; and the third lead wire row connects the third winding group to the conductive bar 111 via the adapter 14. The three conductive bars 111 correspond to the three winding groups, ensuring that each winding group can be electrically connected to the conductive bar 111.

[0084] According to one embodiment of the present application, three adapters 14 are configured and connected to the first, second, and third lead wire banks, respectively. Corresponding to the three lead wire banks in the above embodiment, three adapters 14 are also configured and connected to the corresponding lead wire banks, allowing each winding group to be electrically connected to the conductive bar 111 through its corresponding adapter 14, thus preventing mutual interference between the three lead wire banks.

[0085] According to one embodiment of the present application, three wire row slots 18 extending in the axial direction and spaced apart in the circumferential direction are formed on the outer periphery of the stator core 12 , and the three wire row slots 18 respectively accommodate the first lead wire row, the second lead wire row and the third lead wire row.

[0086] Specifically, the stator assembly 1 is provided with three wire row slots 18 extending axially on the outer periphery of the stator core 12. The three wire row slots 18 are spaced apart from each other in the circumferential direction and correspond one-to-one to the three lead wire rows. The wire row slots 18 can accommodate the corresponding lead wire rows, reserving space for the assembly of the lead wire rows and improving the stability of the lead wire row assembly.

[0087] In some embodiments, after the adapter 14 is welded and assembled with the lead wire 131 and the conductive bar 111, the stator assembly 1 can be glued with glue having high dielectric strength and high thermal conductivity so that the solder joints of the stator assembly 1 are completely wrapped with glue to ensure the insulation of the motor.

[0088] The linear motor 10 according to the present application is briefly described below.

[0089] The linear motor 10 according to the present application includes the stator assembly 1 of the above-described embodiment. Since the linear motor 10 according to the present application is provided with the stator assembly 1 of the above-described embodiment, the stator assembly 1 connects the circuit between the conductive bar 111 and the winding 13 via the adapter 14, allowing the controller current of the linear motor 10 to be normally input into the linear motor 10. The connection method of the adapter 14 can reduce the difficulty of assembling and electrically connecting the stator structure and the core shaft 11 in the linear motor 10, improve assembly efficiency, and facilitate subsequent maintenance and disassembly operations. At the same time, the stator assembly 1 is simple and safe in structure, which can make the linear motor 10 have fewer parts and more reliable operation.

[0090] In some embodiments, a mover assembly 101 may be further provided on the linear motor 10. The mover assembly 101 includes an excitation assembly, and the winding 13 assembly and the excitation assembly are coupled to drive the mover assembly 101 to move. Specifically, the mover assembly 101 can cooperate with the stator assembly 1. The excitation assembly generally includes an excitation winding 13. The excitation winding 13 is coupled to the winding 13 assembly to enable the mover assembly 101 to move relative to the stator assembly 1. During this process, the movement of the mover assembly 101 generates heat energy, and the friction between the mover assembly 101 and other structures also generates heat. The cooling channel in the stator assembly 1 can also be used to exchange heat with the mover assembly 101, so that the linear motor 10 does not need to have a separate cooling structure, thereby reducing the parts required for the linear motor 10 and reducing the manufacturing cost of the linear motor 10.

[0091] The electromagnetic suspension 20 according to the present application is briefly described below.

[0092] The electromagnetic suspension 20 according to the present application includes the linear motor 10 in the above-mentioned embodiment. Since the electromagnetic suspension 20 according to the present application is provided with the linear motor 10 in the above-mentioned embodiment, when the linear motor 10 is assembled with the electromagnetic suspension 20, the assembly efficiency of the electromagnetic suspension 20 can be improved. At the same time, the setting of the linear motor 10 can improve the response rate of the electromagnetic suspension 20, so that the electromagnetic suspension 20 has a higher degree of integration, fewer parts, and lower manufacturing costs.

[0093] The vehicle 30 according to the present application is briefly described below.

[0094] The vehicle 30 according to the present application includes the electromagnetic suspension 20 in the above-mentioned embodiment. Since the vehicle 30 according to the present application is provided with the electromagnetic suspension 20 in the above-mentioned embodiment, when the electromagnetic suspension 20 is assembled with the vehicle 30, the electromagnetic suspension 20 can respond quickly, thereby improving the vibration reduction effect of the vehicle 30. At the same time, the linear motor 10 inside the electromagnetic suspension 20 has a higher overall structural strength and better insulation of the motor because the stator assembly 1 can seal the welding points. Therefore, the setting of the electromagnetic suspension 20 can further improve the safety of the vehicle 30.

[0095] Description of the drawings: The arrows shown in FIG9 only represent the incident direction of the laser during laser welding.

[0096] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0097] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0098] In the description of this application, “plurality” means two or more.

[0099] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0100] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0101] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0102] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stator assembly (1), wherein: include: A core shaft (11), the core shaft (11) having a central hole, and a conductive row (111) is arranged in the central hole; a stator core (12), the stator core (12) being arranged on the outer periphery of the core shaft (11); A winding (13), the winding (13) being arranged on the stator core (12) and provided with a lead wire (131), the lead wire (131) being located outside the core shaft (11); An adapter (14), wherein a first end of the adapter (14) is located outside the core shaft (11) and is connected to the lead wire (131), and a second end of the adapter (14) passes through the shaft wall of the core shaft (11) and is connected to the conductive bar (111).

2. The stator assembly (1) according to claim 1, wherein The end of the lead wire (131) is provided with a first connection end surface (1311), the first end of the adapter (14) is provided with a second connection end surface (1421), and the first connection end surface (1311) and the second connection end surface (1421) are welded.

3. The stator assembly (1) according to claim 2, wherein: The first connecting end surface (1311) and the second connecting end surface (1421) are respectively arranged parallel to the axis of the core shaft (11).

4. The stator assembly (1) according to claim 3, wherein: The adapter (14) comprises: An extension portion (141), wherein the extension portion (141) is a straight line segment, a curved line segment, or a broken line segment extending in the radial direction; A first terminal portion (142), wherein the first terminal portion (142) is arranged radially outside the extension portion (141) and the radial cross-sectional area of ​​the first terminal portion (142) is larger than the cross-sectional area of ​​the extension portion (141), and the radial outer surface of the first terminal portion (142) is formed with the second connection end face (1421).

5. The stator assembly (1) according to claim 4, wherein The adapter (14) further includes: a second terminal portion (143), the second terminal portion (143) being arranged radially inward of the extension portion (141) and being adapted to extend into the core shaft (11) and be connected to the conductive bar (111); The cross-sectional area of ​​the second terminal portion (143) is greater than the cross-sectional area of ​​the extension portion (141).

6. The stator assembly (1) according to claim 5, wherein: The conductive bar (111) is provided with a matching hole suitable for accommodating the second terminal portion (143).

7. The stator assembly (1) according to claim 6, wherein: The radial inner side surface of the second terminal portion (143) and at least a portion of the radial inner side surface of the conductive bar (111) are located in the same plane, and / or the radial outer side surface of the second terminal portion (143) and at least a portion of the radial outer side surface of the conductive bar (111) are located in the same plane.

8. The stator assembly (1) according to claim 6, wherein The outer periphery of the conductive bar (111) is protected by a plastic part (112), and a notch is provided on the plastic part (112) to allow the second terminal part (143) to extend into and connect with the matching hole.

9. The stator assembly (1) according to any one of claims 4 to 8, wherein: Also includes: An insulating plate (15) is provided at an end portion of the stator core (12) close to the lead wire (131), and the extension portion (141) is provided in close contact with the insulating plate (15).

10. The stator assembly (1) according to claim 9, wherein the lead wire (131) comprises: A main body section (1312) and a bent section (1313), wherein the bent section (1313) and the main body section (1312) are connected; the bent section (1313) extends in a direction away from the insulating plate (15), and the main body section (1312) is fitted on the insulating plate (15).

11. The stator assembly (1) according to claim 10, wherein one end of the bent section (1313) away from the insulating plate (15) is flush with one end of the first terminal portion (142) away from the insulating plate (15).

12. The stator assembly (1) according to claim 11, wherein A limiting plate (16) suitable for abutting against the insulating plate (15) is formed on the core shaft (11), and an adapter installation channel (161) extending radially into the core shaft (11) is formed on the limiting plate (16); the adapter (14) passes through the adapter installation channel (161) and connects the lead wire (131) to the conductive bar (111).

13. The stator assembly (1) according to claim 12, wherein: The limiting plate (16) comprises a plurality of limiting sub-plates spaced apart in the circumferential direction of the core shaft (11), and the adapter installation channel (161) is provided between two adjacent limiting sub-plates.

14. The stator assembly (1) according to any one of claims 1 to 13, wherein: The stator core (12) is constructed to be stacked in a plurality in the axial direction of the core shaft (11), and a winding installation groove (17) is provided between two adjacent stator cores (12); The winding (13) is provided with a first winding group, a second winding group and a third winding group, and the first winding group, the second winding group and the third winding group are respectively arranged in the corresponding winding installation groove (17) at intervals; wherein The lead wire (131) includes: a first lead wire row extending in an axial direction and connected to the first winding group; a second lead wire row extending in an axial direction and connected to the second winding group; A third lead wire row extends in the axial direction and is connected to the third winding group.

15. The stator assembly (1) according to claim 14, wherein The adapter (14) is constructed in three pieces and is respectively connected to the first lead wire row, the second lead wire row and the third lead wire row.

16. The stator assembly (1) according to claim 15, wherein The outer periphery of the stator core (12) is formed with three wire row slots (18) extending in the axial direction and spaced apart in the circumferential direction, and the three wire row slots (18) respectively accommodate the first lead wire row, the second lead wire row and the third lead wire row.

17. A linear motor (10), wherein: The stator assembly (1) comprises the stator assembly (1) according to any one of claims 1 to 16.

18. An electromagnetic suspension (20), wherein: Comprising the linear motor (10) described in claim 17.

19. A vehicle (30) wherein: The invention comprises the electromagnetic suspension (20) as claimed in claim 18.

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