Rotating shaft of excitation motor, rotor of excitation motor, excitation motor, and vehicle

Abstract

A vehicle (2000). The vehicle (2000) comprises an excitation motor (1000); the excitation motor (1000) comprises a rotor (1); the rotor (1) comprises a rotating shaft (10) of the excitation motor (1000); a wiring channel (100) is formed in the rotating shaft (10); the wiring channel (100) has a first wire passing hole (101) and a second wire passing hole (102); the first wire passing hole (101) and the second wire passing hole (102) respectively run through the outer surface of the rotating shaft (10); and the wiring channel (100) is used for accommodating a wire connecting an excitation unit (200) and a rotor excitation winding (401).

Description

Rotating shaft of excitation motor, rotor of excitation motor, excitation motor and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on September 11, 2023, with application number 202311174433.4 and entitled “Rotating shaft of excitation motor, rotor of excitation motor, excitation motor and vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of excitation motors, and in particular to a rotating shaft of an excitation motor, a rotor of an excitation motor, an excitation motor, and a vehicle. Background Art

[0004] Excitation motors in related technologies typically include an excitation unit and a rotor excitation winding. The excitation unit uses electric and magnetic fields as a medium to power the rotor excitation winding, achieving energy transmission. Excitation motors feature a compact structure and flexible configuration. However, the wires between the excitation unit and the rotor excitation winding are typically exposed to the air and tied to the shaft with binding wire. In the complex environment of external vibration, superimposed acceleration, and strong centrifugal force from the rotor, these wires are prone to aging and failure, and can easily cause faults such as wire breakage and disconnection, rendering the excitation motor inoperable.

[0005] Public content

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a rotating shaft for an excitation motor that prevents the wires connecting the excitation unit and the rotor excitation winding from being exposed outside the rotating shaft, thereby reducing the probability of insulation aging, short circuits, and other problems in the wires.

[0007] The present application also provides a rotor of an excitation motor having the rotating shaft of the excitation motor.

[0008] The present application also provides an excitation motor having the rotor of the excitation motor.

[0009] The present application also provides a vehicle having the above-mentioned excitation motor.

[0010] In order to achieve the above-mentioned purpose, according to the first aspect embodiment of the present application, a rotating shaft of an excitation motor is proposed, and the internal structure of the rotating shaft is provided with a wiring channel, and the wiring channel has a first wiring opening and a second wiring opening, and the first wiring opening and the second wiring opening respectively pass through the outer surface of the rotating shaft, and the wiring channel is used to accommodate the wires connecting the excitation unit and the rotor excitation winding.

[0011] According to the first aspect of the present application, the rotating shaft of the excitation motor can prevent the wires connecting the excitation unit and the rotor excitation winding from being exposed outside the rotating shaft, thereby reducing the probability of problems such as insulation aging and short circuit in the wires.

[0012] According to some embodiments of the present application, both the first threading opening and the second threading opening pass through the outer circumference of the rotating shaft.

[0013] According to some embodiments of the present application, the first threading opening and the second threading opening are spaced apart along the axial direction of the rotating shaft.

[0014] According to some embodiments of the present application, the wiring channel includes: an axial section, which extends along the axial direction of the rotating shaft; a first radial section, which extends along the radial direction of the rotating shaft, one end of the first radial section is connected to one end of the axial section, and the other end of the first radial section forms the first wire threading opening; a second radial section, which extends along the radial direction of the rotating shaft, one end of the second radial section is connected to the other end of the axial section, and the other end of the second radial section forms the second wire threading opening.

[0015] According to some embodiments of the present application, the first radial segment and the second radial segment extend toward the same side of the axial segment in the radial direction of the rotating shaft.

[0016] According to some embodiments of the present application, the length of the first radial segment is equal to the length of the second radial segment.

[0017] According to some embodiments of the present application, the rotating shaft is configured with a process hole, which extends along the axial direction of the rotating shaft and passes through at least one end of the rotating shaft, and the axial section is constituted by a portion of the process hole.

[0018] According to some embodiments of the present application, the remaining portion of the process hole except for the axial section is filled with a sealing member.

[0019] According to some embodiments of the present application, the sealing member is an insulating member.

[0020] According to some embodiments of the present application, the central axis of the process hole coincides with the central axis of the rotating shaft.

[0021] According to some embodiments of the present application, there are multiple wiring channels and they are arranged at intervals along the circumference of the rotating shaft.

[0022] According to some embodiments of the present application, there are two wiring channels and they are arranged opposite to each other in the radial direction of the rotating shaft.

[0023] According to the second aspect of the present application, a rotor of an excitation motor is proposed, comprising: a rotating shaft of the excitation motor according to the first aspect of the present application; an excitation unit; a rotor core, the rotating shaft being connected to the rotor core, the rotor core being provided with a rotor excitation winding; a conductive wire, the conductive wire being passed through the first threading opening and the second threading opening and being provided in the wiring channel, the conductive wire being connected to the excitation unit and the excitation winding, respectively.

[0024] According to the rotor of the excitation motor according to the second aspect embodiment of the present application, by utilizing the rotating shaft of the excitation motor according to the first aspect embodiment of the present application, it is possible to avoid the wires connecting the excitation unit and the rotor excitation winding being exposed outside the rotating shaft, thereby reducing the probability of problems such as insulation aging and short circuit in the wires.

[0025] According to some embodiments of the present application, the excitation unit includes: an excitation stator; an excitation rotor, the excitation rotor is sleeved on the rotating shaft and rotates synchronously with the rotating shaft, and the excitation rotor is connected to the wire.

[0026] According to some embodiments of the present application, the rotor core covers the first wire threading opening, and one end of the wire is connected to the rotor excitation winding through the first wire threading opening; the excitation unit covers the second wire threading opening, and the other end of the wire is connected to the excitation unit through the second wire threading opening.

[0027] According to some embodiments of the present application, the rotor of the excitation motor further includes: a first plug, which is sealed at the first wire threading port, and the first plug is provided with a first positioning hole for the wire to pass through; a second plug, which is sealed at the second wire threading port, and the second plug is provided with a second positioning hole for the wire to pass through.

[0028] According to some embodiments of the present application, each of the first plug and the second plug includes: a plug-in section; a positioning section, the positioning section is connected to one end of the plug-in section, the cross-sectional area of ​​the positioning section is larger than the cross-sectional area of ​​the plug-in section, the first threading opening and the second threading opening are both provided with a recessed groove, and the positioning section is stopped at the bottom wall of the recessed groove.

[0029] According to some embodiments of the present application, a guide portion is provided at the other end of the plug-in section, and the cross-sectional area of ​​the guide portion gradually decreases in a direction away from the positioning section.

[0030] According to some embodiments of the present application, the outer circumferential surface of the plug-in section is provided with a deformation groove extending along its circumference, and the deformation groove is adjacent to the guide portion and is located on a side of the guide portion facing the positioning section.

[0031] According to some embodiments of the present application, the rotor of the excitation motor further includes: a first wiring clamp, which respectively clamps the rotor excitation winding and the wire so that the rotor excitation winding and the wire are connected through the first wiring clamp; and a second wiring clamp, which respectively clamps the excitation unit and the wire so that the excitation unit and the wire are connected through the second wiring clamp.

[0032] According to some embodiments of the present application, each of the first wiring clamp and the second wiring clamp includes: a substrate; a first clamp and a second clamp, the first clamp and the second clamp are respectively arranged on opposite sides of the substrate, the first clamp is used to clamp the rotor excitation winding or the excitation unit, and the second clamp is used to clamp the wire.

[0033] According to some embodiments of the present application, each of the first clamping jaw and the second clamping jaw includes: a first elastic arm and a second elastic arm, and a clamping hole and an entry and exit gap that are connected to each other are defined between the first elastic arm and the second elastic arm, and the width of the entry and exit gap is smaller than the aperture of the clamping hole.

[0034] According to some embodiments of the present application, the central axis of the clamping hole of the first clamping jaw is perpendicular to the central axis of the clamping hole of the second clamping jaw.

[0035] According to an embodiment of a third aspect of the present application, an excitation motor is provided, comprising the rotor of the excitation motor according to the embodiment of the second aspect of the present application.

[0036] According to the excitation motor of the third aspect embodiment of the present application, by utilizing the rotor of the excitation motor according to the second aspect embodiment of the present application, it is possible to avoid the wires connecting the excitation unit and the rotor excitation winding being exposed outside the rotating shaft, thereby reducing the probability of problems such as insulation aging and short circuit in the wires.

[0037] According to a fourth aspect embodiment of the present application, a vehicle is provided, comprising the excitation motor according to the third aspect embodiment of the present application.

[0038] According to the excitation motor of the fourth aspect embodiment of the present application, by utilizing the excitation motor according to the third aspect embodiment of the present application, it is possible to avoid the wires connecting the excitation unit and the rotor excitation winding being exposed outside the rotating shaft, thereby reducing the probability of problems such as insulation aging and short circuit in the wires.

[0039] 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

[0040] 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:

[0041] FIG1 is a schematic structural diagram of a rotor according to an embodiment of the present application.

[0042] FIG2 is a schematic structural diagram of a rotor from another perspective according to an embodiment of the present application.

[0043] FIG3 is a cross-sectional view of a rotor according to an embodiment of the present application.

[0044] FIG4 is a partial enlarged schematic diagram of area A in FIG3 .

[0045] FIG5 is a schematic diagram showing the connection between a first connecting clamp of a rotor and a rotor excitation winding on a rotor core according to an embodiment of the present application.

[0046] FIG6 is a schematic diagram showing the connection between the first connecting clamp of the rotor and the rotor excitation winding on the rotor core from another perspective according to an embodiment of the present application.

[0047] FIG7 is a schematic structural diagram of a first connecting clamp (a second connecting clamp) of a rotor according to an embodiment of the present application.

[0048] FIG8 is a schematic structural diagram of a first plug (second plug) of a rotor according to an embodiment of the present application.

[0049] FIG9 is a schematic structural diagram of the first plug (second plug) of the rotor from another perspective according to an embodiment of the present application.

[0050] FIG10 is a cross-sectional view of a rotating shaft according to an embodiment of the present application.

[0051] FIG11 is a cross-sectional view of a rotating shaft according to another embodiment of the present application.

[0052] FIG12 is a schematic block diagram of a vehicle according to an embodiment of the present application.

[0053] Reference numerals: Vehicle 2000, excitation motor 1000, rotor 1, rotating shaft 10, seal 20, rotor core 40, wire 50, wiring channel 100, first wire threading port 101, second wire threading port 102, axial section 110, first radial section 120, second radial section 130, process hole 140, sink 150, excitation unit 200, excitation stator 210, excitation rotor 220, mounting air gap 230, first plug 310, first positioning hole 311, second plug 320, second positioning hole 321, plug-in section 330, positioning section 340, guide portion 350, deformation groove 360, Rotor excitation winding 401 , first connecting clamp 410 , second connecting clamp 420 , base plate 430 , first clamping jaw 440 , second clamping jaw 450 , first elastic arm 460 , second elastic arm 470 , clamping hole 480 , inlet and outlet notch 490 , bearing 500 , and end cover 600 . DETAILED DESCRIPTION

[0054] The following describes in detail embodiments of the present application, and the embodiments described with reference to the accompanying drawings are exemplary.

[0055] 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.

[0056] In the description of this application, “plurality” means two or more.

[0057] The following describes a rotating shaft 10 of an excitation motor according to an embodiment of the present application with reference to the accompanying drawings.

[0058] As shown in Figures 3, 4, 5, 6, 10 and 11, the internal structure of the rotating shaft 10 of the excitation motor according to the embodiment of the present application is provided with a wiring channel 100, and the wiring channel 100 has a first wiring opening 101 and a second wiring opening 102. The first wiring opening 101 and the second wiring opening 102 respectively pass through the outer surface of the rotating shaft 10, and the wiring channel 100 is used to accommodate the wire 50 connecting the excitation unit 200 and the rotor excitation winding 401.

[0059] According to the rotating shaft 10 of the excitation motor in the embodiment of the present application, a wire 50 is arranged in the wiring channel 100 inside the rotating shaft 10, one end of the wire 50 passes through the first wire threading port 101 and extends out of the rotating shaft 10, and the other end of the wire 50 passes through the second wire threading port 102 and extends out of the rotating shaft 10, and the two ends of the wire 50 are respectively connected to the excitation unit 200 and the rotor excitation winding 401, which can ensure that the direct current output by the excitation unit 200 is reliably output to the rotor excitation winding 401 through the wire 50.

[0060] The above wiring method avoids the wire 50 being exposed outside the rotating shaft 10. When the excitation motor runs for a long time, the wire 50 is not easily affected by the strong centrifugal force and high temperature of the rotor 1, thereby causing problems such as aging of the insulation layer and short circuit. At the same time, the above wiring method has a simple structure and is easy to implement.

[0061] In this way, the rotating shaft 10 of the excitation motor according to the embodiment of the present application can prevent the wire 50 connecting the excitation unit 200 and the rotor excitation winding 401 from being exposed outside the rotating shaft 10, thereby reducing the probability of the wire 50 having problems such as insulation layer aging and short circuit.

[0062] According to some specific embodiments of the present application, as shown in Figures 3, 4, 5, 6, 10, and 11, the first threading opening 101 and the second threading opening 102 both pass through the outer circumference of the rotating shaft 10. The rotor excitation winding 401 and the excitation unit 200 are generally sleeved on the rotating shaft 10, that is, the rotor excitation winding 401 surrounds the outer circumference of the rotating shaft 10, and the excitation unit 200 surrounds the outer circumference of the rotating shaft 10. By providing the first threading opening 101 and the second threading opening 102 through the outer circumference of the rotating shaft 10, it is convenient for the wire 50 to extend from the first threading opening 101 and the second threading opening 102 to be connected to the rotor excitation winding 401 and the excitation unit 200.

[0063] According to some specific embodiments of the present application, as shown in Figures 3, 4, 5, 6, 10, and 11, the first threading opening 101 and the second threading opening 102 are spaced apart along the axial direction of the rotating shaft 10. The rotor excitation winding 401 and the excitation unit 200 are also spaced apart along the axial direction of the rotating shaft 10. In this way, when the two ends of the wire 50 extend from the first threading opening 101 and the second threading opening 102, they can be more conveniently connected to the rotor excitation winding 401 and the excitation unit 200.

[0064] For example, the first threading opening 101 is closer to the rotor excitation winding 401 relative to the second threading opening 102, and the second threading opening 102 is closer to the excitation unit 200 relative to the first threading opening 101. The end of the wire 50 extending from the first threading opening 101 can be connected to the rotor excitation winding 401, and the end of the wire 50 extending from the second threading opening 102 can be connected to the excitation unit 200.

[0065] It should be noted that the positions of the first threading opening 101 and the second threading opening 102 can be interchanged, that is, the first threading opening 101 is closer to the excitation unit 200 relative to the second threading opening 102, and the second threading opening 102 is closer to the rotor excitation winding 401 relative to the first threading opening 101. The end of the wire 50 extending from the first threading opening 101 can be connected to the excitation unit 200, and the end of the wire 50 extending from the second threading opening 102 can be connected to the rotor excitation winding 401.

[0066] According to some specific embodiments of the present application, as shown in FIG. 10 and FIG. 11 , the wiring channel 100 includes an axial segment 110 , a first radial segment 120 , and a second radial segment 130 .

[0067] The axial section 110 extends along the axial direction of the rotating shaft 10, the first radial section 120 extends along the radial direction of the rotating shaft 10, one end of the first radial section 120 is connected to one end of the axial section 110, and the other end of the first radial section 120 forms a first threading opening 101, and the second radial section 130 extends along the radial direction of the rotating shaft 10, one end of the second radial section 130 is connected to the other end of the axial section 110, and the other end of the second radial section 130 forms a second threading opening 102.

[0068] For example, at the connection between the axial segment 110 and the first radial segment 120 , and at the connection between the axial segment 110 and the second radial segment 130 , the bending radius of the wire 50 may be 90°, so as to facilitate installation of the wire 50 into the rotating shaft 10 .

[0069] By dividing the wiring channel 100 into the axial section 110 , the first radial section 120 and the second radial section 130 , it is convenient to arrange the first wire threading opening 101 and the second wire threading opening 102 axially spaced apart from each other along the rotating shaft 10 and facilitate the arrangement of the wires 50 .

[0070] According to some specific embodiments of the present application, as shown in Figures 10 and 11, the first radial segment 120 and the second radial segment 130 extend radially along the rotating shaft 10 toward the same side of the axial segment 110. This shortens the length of the wire 50 and facilitates machining of the first radial segment 120 and the second radial segment 130 from the same side of the rotating shaft 10.

[0071] According to some specific embodiments of the present application, as shown in Figures 10 and 11, the length of the first radial segment 120 is equal to the length of the second radial segment 130. In this way, the central axis of the axial segment 110 is parallel to the central axis of the rotating shaft 10, which can shorten the length of the axial segment 110 and reduce the difficulty of processing. In addition, the central axis of the first radial segment 120 is parallel to the central axis of the second radial segment 130. Therefore, the processing standards of the first radial segment 120 and the second radial segment 130 are roughly the same, which can reduce the difficulty of processing and improve production efficiency.

[0072] According to some specific embodiments of the present application, as shown in Figures 3, 4, and 11, the rotating shaft 10 is configured with a process hole 140. The process hole 140 extends along the axial direction of the rotating shaft 10 and penetrates at least one end of the rotating shaft 10. The axial section 110 is formed by a portion of the process hole 140. Because the process hole 140 only needs to extend inward along the axial direction of the rotating shaft 10 from the end surface of the rotating shaft 10, the process hole 140 is relatively easy to manufacture, which can reduce the difficulty of manufacturing the axial section 110, simplify the structure of the rotating shaft 10, and improve production efficiency.

[0073] According to some specific embodiments of the present application, as shown in Figures 3 and 4, the portion of the process hole 140 other than the axial section 110 is filled with a sealant 20. The sealant 20 may be epoxy resin, and the sealant 20 may be filled into the process hole 140 by potting. First, the wire 50 is placed into the wiring channel 100, and then the sealant 20 is filled into the process hole 140.

[0074] In this way, the wire 50 can be prevented from being exposed to the air through the process hole 140, reducing the probability of aging of the insulation layer of the wire 50 caused by the strong centrifugal force and high temperature of the rotor 1 when the excitation motor runs for a long time, and the structural strength of the shaft 10 is higher.

[0075] According to some specific embodiments of the present application, the seal 20 is an insulating member. Thus, even if the insulation layer of the wire 50 ages due to the strong centrifugal force and high temperature of the rotor 1 during long-term operation of the excitation motor, the seal 20 can still provide insulation protection for the wire 50, improving the insulation performance between the wire 50 and the seal 20, effectively reducing the risk of short circuiting the wire 50, and making the electrical performance of the excitation motor safer and more reliable.

[0076] According to some specific embodiments of the present application, as shown in Figures 3, 4, and 11, the central axis of the process hole 140 coincides with the central axis of the rotating shaft 10. This makes the overall weight of the rotating shaft 10 more uniform, avoids eccentricity during rotation of the rotating shaft 10, improves the operating stability of the excitation motor, and reduces noise caused by shaking of the excitation motor.

[0077] According to some specific embodiments of the present application, as shown in Figures 3, 4, 10, and 11, a plurality of wiring channels 100 are provided and arranged at intervals along the circumference of the rotating shaft 10. By providing a plurality of wiring channels 100, a plurality of conductors 50 can be provided between the excitation unit 200 and the rotor excitation winding 401, thereby making the electrical connection between the excitation unit 200 and the rotor excitation winding 401 more reliable.

[0078] According to some specific embodiments of the present application, as shown in Figures 3, 4, 5, 6, 10, and 11, there are two wiring channels 100, which are arranged opposite to each other in the radial direction of the rotating shaft 10. Among them, the wire 50 in one wiring channel 100 can connect the positive pole of the excitation unit 200 and the positive pole of the rotor excitation winding 401, and the wire 50 in the other wiring channel 100 can connect the negative pole of the excitation unit 200 and the negative pole of the rotor excitation winding 401. In this way, a complete conductive loop can be formed between the excitation unit 200 and the rotor excitation winding 401. In addition, the two wires 50 are arranged on opposite sides of the radial direction of the rotating shaft 10, which can reduce the risk of short circuit and improve safety.

[0079] According to the rotor 1 of the excitation motor according to the embodiment of the present application, as shown in Figures 1 to 11, the rotor 1 of the excitation motor includes a rotating shaft 10 of the excitation motor according to any of the above embodiments of the present application, an excitation unit 200, a rotor core 40 and a wire 50.

[0080] The rotating shaft 10 is connected to the rotor core 40. The rotor core 40 is provided with a rotor excitation winding 401. The wire 50 is passed through the first wire threading port 101 and the second wire threading port 102 and is arranged in the wiring channel 100. The wire 50 is connected to the excitation unit 200 and the excitation winding respectively.

[0081] For example, rotor winding slots are provided on the rotor core 40, and the rotor excitation winding 401 is wound in the rotor winding slots. The rotor excitation windings 401 of adjacent poles are wound in opposite directions. When a DC excitation current is passed through the rotor excitation winding 401, a rotor magnetic field with alternating N poles and S poles is generated.

[0082] In addition, after the rotor excitation winding 401 is wound on the rotor core 40, end covers 600 are set on opposite sides of the rotor excitation winding 401 on the rotating shaft 10. The end covers 600 can be made of aluminum or stainless steel. The end covers 600 have the function of isolating magnetism and protecting the ends of the rotor excitation winding 401. The excitation unit 200 is spaced apart from the end covers 600 in the axial direction of the rotating shaft 10.

[0083] A bearing 500 is sleeved on the rotating shaft 10 , and the excitation unit 200 and the rotor core 40 are located between the two bearings 500 in the axial direction of the rotating shaft 10 .

[0084] According to the rotor 1 of the excitation motor according to the embodiment of the present application, by utilizing the rotating shaft 10 of the excitation motor according to the above-mentioned embodiment of the present application, it is possible to avoid the wire 50 connecting the excitation unit 200 and the rotor excitation winding 401 from being exposed outside the rotating shaft 10, thereby reducing the probability of the wire 50 having problems such as insulation layer aging and short circuit.

[0085] According to some specific embodiments of the present application, as shown in FIG3 , the excitation unit 200 includes an excitation stator 210 and an excitation rotor 220 . The excitation rotor 220 is sleeved on the rotating shaft 10 and rotates synchronously with the rotating shaft 10 . The excitation rotor 220 is connected to the wire 50 .

[0086] For example, the excitation unit 200 is a rotating transformer, the excitation stator 210 can be fixedly connected to the motor housing of the excitation motor, the excitation stator 210 is connected to an external power supply, the excitation stator 210 is the primary side of the rotating transformer, the excitation rotor 220 is the secondary side of the rotating transformer, and there is an installation air gap 230 between the excitation stator 210 and the excitation rotor 220 in the axial direction of the rotating shaft 10. The excitation unit 200 relies on the excitation stator 210 and the excitation rotor 220 to realize energy transmission with electric field and magnetic field as the medium, and supplies power to the rotor excitation winding 401.

[0087] According to some specific embodiments of the present application, as shown in Figures 3, 4, 5, 6, 10 and 11, the rotor core 40 covers the first wire threading opening 101, one end of the wire 50 is connected to the rotor excitation winding 401 through the first wire threading opening 101, the excitation unit 200 covers the second wire threading opening 102, and the other end of the wire 50 is connected to the excitation unit 200 through the second wire threading opening 102.

[0088] Specifically, the end cap 600 covers the first threading opening 101, and the seal 20 connects the end cap 600 and the rotating shaft 10 as a whole, facilitating heat dissipation from the end of the rotor excitation winding 401 and improving the structural strength of the rotor 1. Furthermore, the seal 20 connects the excitation rotor 220 of the excitation unit 200 and the rotating shaft 10 as a whole, facilitating heat dissipation from the end of the excitation rotor 220 and improving the structural strength of the rotor 1.

[0089] In addition, the short distance between the wire 50 and the rotor excitation winding 401, as well as the short distance between the wire 50 and the excitation unit 200, advantageously reduces the volume of the wire 50 exposed to the air, and reduces the probability of the wire 50 causing insulation aging, short circuit and other problems due to the strong centrifugal force and high temperature of the rotor 1.

[0090] According to some specific embodiments of the present application, as shown in Figures 3, 4, 8, and 9, the rotor 1 of the excitation motor further includes a first plug 310 and a second plug 320. The first plug 310 blocks the first wire threading opening 101 and is provided with a first positioning hole 311 for the wire 50 to pass through. The second plug 320 blocks the second wire threading opening 102 and is provided with a second positioning hole 321 for the wire 50 to pass through.

[0091] For example, the first plug 310 and the second plug 320 can be made of an insulating material. The first plug 310 can fix the relative position between the wire 50 and the inner wall of the first wire threading opening 101, preventing the wire 50 from dangling in the first wire threading opening 101. The first plug 310 also separates the wire 50 from the inner wall of the first wire threading opening 101, thereby improving the insulation performance between the wire 50 and the rotating shaft 10. The second plug 320 can fix the relative position between the wire 50 and the inner wall of the second wire threading opening 102, preventing the wire 50 from dangling in the second wire threading opening 102. The second plug 320 also separates the wire 50 from the inner wall of the second wire threading opening 102, thereby improving the insulation performance between the wire 50 and the rotating shaft 10.

[0092] In addition, the first and second plugs 310 and 320 can block the first and second threading openings 101 and 102 , thereby preventing the seal 20 from flowing out of the rotating shaft 10 through the first and second threading openings 101 and 102 .

[0093] According to some specific embodiments of the present application, as shown in Figures 4, 8-11, each of the first plug 310 and the second plug 320 includes an inserting section 330 and a positioning section 340. The positioning section 340 is connected to one end of the inserting section 330, and the cross-sectional area of ​​the positioning section 340 is larger than the cross-sectional area of ​​the inserting section 330. The first threading opening 101 and the second threading opening 102 are both provided with a recessed groove 150, and the positioning section 340 is stopped by the bottom wall of the recessed groove 150.

[0094] The plug section 330 of the first plug 310 can be sealed with the inner wall of the first threading opening 101, and the plug section 330 of the second plug 320 can be sealed with the inner wall of the second threading opening 102, thereby sealing the first threading opening 101 and the second threading opening 102.

[0095] The cooperation between the positioning section 340 of the first plug 310 and the recessed groove 150 of the first threading opening 101 can determine the relative position of the first plug 310 and the first threading opening 101, thereby preventing the first plug 310 from being excessively inserted into the first threading opening 101. The cooperation between the positioning section 340 of the second plug 320 and the recessed groove 150 of the second threading opening 102 can determine the relative position of the second plug 320 and the second threading opening 102, thereby preventing the second plug 320 from being excessively inserted into the second threading opening 102.

[0096] For example, the side of the positioning section 340 facing away from the plug-in section 330 can be located in the same plane as the outer peripheral surface of the rotating shaft 10. In this way, the positioning section 340 will not protrude from the rotating shaft 10 and interfere with the excitation unit 200 or the rotor core 40, and the positioning section 340 will not be recessed relative to the rotating shaft 10 and easily accumulate dust, which can improve the cleanliness.

[0097] According to some specific embodiments of the present application, as shown in Figures 8 and 9, a guide portion 350 is provided at the other end of the plug section 330, and the cross-sectional area of ​​the guide portion 350 gradually decreases in the direction away from the positioning section 340. In this way, the guide portion 350 can serve as a guide to facilitate the insertion of the plug section 330 of the first plug 310 into the first threading opening 101 and the insertion of the plug section 330 of the second plug 320 into the second threading opening 102, thereby reducing assembly difficulty and improving assembly efficiency.

[0098] According to some specific embodiments of the present application, as shown in Figures 8 and 9, the outer circumferential surface of the plug-in section 330 is provided with a deformation groove 360 ​​extending along its circumference. The deformation groove 360 ​​is adjacent to the guide portion 350 and is located on the side of the guide portion 350 facing the positioning section 340. During the plug-in process of the plug-in section 330, the guide portion 350 is subjected to force that can push the groove wall of the deformation groove 360 ​​to deform, thereby further reducing the difficulty of assembly and improving assembly efficiency.

[0099] According to some specific embodiments of the present application, as shown in FIG. 4 to FIG. 7 , the rotor 1 of the excitation motor further includes a first connecting clamp 410 and a second connecting clamp 420 .

[0100] The first connecting clamp 410 clamps the rotor excitation winding 401 and the wire 50 respectively, so that the rotor excitation winding 401 and the wire 50 are connected through the first connecting clamp 410, and the second connecting clamp 420 clamps the excitation unit 200 and the wire 50 respectively, so that the excitation unit 200 and the wire 50 are connected through the second connecting clamp 420.

[0101] For example, the first and second connecting clamps 410, 420 can be made of copper to achieve electrical connection between the rotor excitation winding 401 and the wire 50 via the first connecting clamp 410, and between the excitation unit 200 and the wire 50 via the second connecting clamp 420. The outer surfaces of the first and second connecting clamps 410, 420 can be tin-plated. Furthermore, the seal 20 can connect the first and second connecting clamps 410, 420, and the rotating shaft 10 into a single unit.

[0102] The rotor excitation winding 401 and the wire 50 are connected by the first connecting clamp 410. There is no need for direct connection between the rotor excitation winding 401 and the wire 50. The connection is convenient and stable, and it is not easy to separate under the high-speed rotation of the excitation motor. The rotor excitation winding 401 and the wire 50 are clamped by the first connecting clamp 410, and the electrical connection is highly stable. Among them, the wire 50 can be welded to the first connecting clamp 410 after being clamped by the first connecting clamp 410, further improving the stability of the connection.

[0103] The excitation unit 200 and the wire 50 are connected by the second connecting clamp 420. There is no need for direct connection between the excitation unit 200 and the wire 50. The connection is convenient and stable, and it is not easy to separate under the high-speed rotation of the excitation motor. The excitation unit 200 and the wire 50 are clamped by the second connecting clamp 420, and the stability of the electrical connection is high. Among them, the wire 50 can be welded to the second connecting clamp 420 after being clamped by the second connecting clamp 420, further improving the stability of the connection.

[0104] According to some specific embodiments of the present application, as shown in FIG. 4 to FIG. 7 , each of the first connecting clip 410 and the second connecting clip 420 includes a base plate 430 , a first clamping jaw 440 and a second clamping jaw 450 .

[0105] The first clamping jaw 440 and the second clamping jaw 450 are respectively disposed on opposite sides of the base plate 430 . The first clamping jaw 440 is used to clamp the rotor excitation winding 401 or the excitation unit 200 , and the second clamping jaw 450 is used to clamp the wire 50 .

[0106] That is to say, the first terminal clamp 140 clamps the rotor excitation winding 401 and the wire 50 respectively through the first clamp 440 and the second clamp 450, and the second terminal clamp 420 clamps the excitation unit 200 and the wire 50 respectively through the first clamp 440 and the second clamp 450, and the first clamp 440 and the second clamp 450 are separated by the substrate 430. In this way, the rotor excitation winding 401 or the excitation unit 200 is not likely to interfere with the wire 50, and the clamping is more stable and reliable.

[0107] According to some specific embodiments of the present application, as shown in Figures 4 to 7, each of the first clamping jaw 440 and the second clamping jaw 450 includes a first elastic arm 460 and a second elastic arm 470, and a clamping hole 480 and an entry and exit notch 490 that are connected to each other are defined between the first elastic arm 460 and the second elastic arm 470, and the width of the entry and exit notch 490 is smaller than the aperture of the clamping hole 480.

[0108] The wire 50 can enter the clamping hole 480 through the entry and exit notch 490. The aperture of the clamping hole 480 and the width of the entry and exit notch 490 can be smaller than the diameter of the wire 50. In this way, the first elastic arm 460 and the second elastic arm 470 can apply a clamping force to the wire 50, making the connection between the wire 50 and the second clamping jaw 450 more reliable. Moreover, since the width of the entry and exit notch 490 is smaller than the aperture of the clamping hole 480, the wire 50 is less likely to detach from the clamping hole 480.

[0109] Similarly, the winding group on the excitation unit 200 can also enter the clamping hole 480 through the entry and exit notch 490. The aperture of the clamping hole 480 and the width of the entry and exit notch 490 can be smaller than the diameter of the winding group on the excitation unit 200. In this way, the first elastic arm 460 and the second elastic arm 470 can apply a clamping force to the winding group on the excitation unit 200, so that the connection between the winding group on the excitation unit 200 and the first clamping jaw 440 of the second terminal clamp 420 is more reliable, and because the width of the entry and exit notch 490 is smaller than the aperture of the clamping hole 480, the winding group on the excitation unit 200 is less likely to detach from the clamping hole 480.

[0110] The rotor excitation winding 401 can also enter the clamping hole 480 through the entry and exit notch 490. The aperture of the clamping hole 480 and the width of the entry and exit notch 490 can be smaller than the diameter of the rotor excitation winding 401. In this way, the first elastic arm 460 and the second elastic arm 470 can apply a clamping force to the rotor excitation winding 401, making the connection between the rotor excitation winding 401 and the first clamping claw 440 of the first connecting clamp 410 more reliable. Moreover, since the width of the entry and exit notch 490 is smaller than the aperture of the clamping hole 480, the rotor excitation winding 401 is less likely to detach from the clamping hole 480.

[0111] According to some specific embodiments of the present application, as shown in Figures 4-7 , the central axis of the clamping hole 480 of the first clamping jaw 440 is perpendicular to the central axis of the clamping hole 480 of the second clamping jaw 450. This facilitates the connection between the first connecting clamp 410 and the rotor excitation winding 401 and the conductor 50, and facilitates the connection between the second connecting clamp 420 and the excitation unit 200 and the conductor 50, making the connection more convenient and improving assembly efficiency.

[0112] The excitation motor 1000 according to an embodiment of the present application is described below with reference to the accompanying drawings. The excitation motor 1000 includes the rotor 1 of the excitation motor according to the above embodiment of the present application, as shown in FIG12 .

[0113] According to the excitation motor 1000 of the embodiment of the present application, by utilizing the rotor 1 of the excitation motor according to the above-mentioned embodiment of the present application, it is possible to avoid the wires 50 of the excitation unit 200 and the rotor excitation winding 401 being exposed outside the rotating shaft 10, thereby reducing the probability of the wires 50 having problems such as insulation layer aging and short circuit.

[0114] A vehicle 2000 according to an embodiment of the present application will be described below with reference to FIG12 . The vehicle 2000 includes an excitation motor 1000 according to any of the above embodiments of the present application.

[0115] By utilizing the excitation motor 1000 according to the above embodiment of the present application, it is possible to prevent the wires 50 of the excitation unit 200 and the rotor excitation winding 401 from being exposed outside the rotating shaft 10, thereby reducing the probability of problems such as insulation layer aging and short circuit in the wires 50.

[0116] The rotating shaft 10 of the excitation motor, the rotor 1 of the excitation motor, the excitation motor 1000 and other structures and operations of the vehicle 2000 according to the embodiment of the present application are well known to ordinary technicians in this field and will not be described in detail here.

[0117] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0118] 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 rotating shaft (10) of an excitation motor, characterized in that: The rotating shaft (10) is internally structured with a wiring channel (100), the wiring channel (100) having a first wiring opening (101) and a second wiring opening (102), the first wiring opening (101) and the second wiring opening (102) respectively passing through the outer surface of the rotating shaft (10), and the wiring channel (100) is used to accommodate a wire (50) connecting an excitation unit (200) and a rotor excitation winding (401).

2. The rotating shaft (10) of the excitation motor according to claim 1, characterized in that: The first threading opening (101) and the second threading opening (102) both pass through the outer circumferential surface of the rotating shaft (10).

3. The rotating shaft (10) of the excitation motor according to claim 1 or 2, characterized in that: The first threading opening (101) and the second threading opening (102) are arranged at intervals along the axial direction of the rotating shaft (10).

4. The rotating shaft (10) of the excitation motor according to any one of claims 1 to 3, characterized in that: The wiring channel (100) comprises: An axial section (110), the axial section (110) extending along the axial direction of the rotating shaft (10); a first radial section (120), the first radial section (120) extending in the radial direction of the rotating shaft (10), one end of the first radial section (120) being connected to one end of the axial section (110), and the other end of the first radial section (120) forming the first threading port (101); and A second radial section (130), the second radial section (130) extends radially along the rotating shaft (10), one end of the second radial section (130) is connected to the other end of the axial section (110), and the other end of the second radial section (130) forms the second threading port (102).

5. The rotating shaft (10) of the excitation motor according to claim 4, characterized in that: The first radial section (120) and the second radial section (130) extend along the radial direction of the rotating shaft (10) toward the same side of the axial section (110).

6. The rotating shaft (10) of the excitation motor according to claim 4 or 5, characterized in that: The length of the first radial section (120) is equal to the length of the second radial section (130).

7. The rotating shaft (10) of the excitation motor according to any one of claims 4 to 6, characterized in that: The rotating shaft (10) is configured with a process hole (140), wherein the process hole (140) extends along the axial direction of the rotating shaft (10) and passes through at least one end of the rotating shaft (10), and the axial section (110) is constituted by a portion of the process hole (140).

8. The rotating shaft (10) of the excitation motor according to claim 7, characterized in that: The portion of the process hole (140) other than the portion constituting the axial section (110) is filled with a sealing member (20).

9. The rotating shaft (10) of the excitation motor according to claim 8, characterized in that: The sealing member (20) is an insulating member.

10. The rotating shaft (10) of the excitation motor according to any one of claims 7 to 9, characterized in that: The central axis of the process hole (140) coincides with the central axis of the rotating shaft (10).

11. The rotating shaft (10) of the excitation motor according to any one of claims 1 to 10, characterized in that: The wiring channels (100) are multiple and are arranged at intervals along the circumference of the rotating shaft (10).

12. The rotating shaft (10) of the excitation motor according to any one of claims 1 to 11, characterized in that: There are two wiring channels (100) which are arranged opposite to each other in the radial direction of the rotating shaft (10).

13. A rotor (1) of an excitation motor, characterized in that: include: A rotating shaft (10) of an excitation motor according to any one of claims 1 to 12; Excitation unit (200); A rotor core (40), the rotating shaft (10) being connected to the rotor core (40), and the rotor core (40) being provided with a rotor excitation winding (401); as well as A conductive wire (50), the conductive wire (50) being passed through the first wire threading opening (101) and the second wire threading opening (102) and being arranged in the wiring channel (100), the conductive wire (50) being connected to the excitation unit (200) and the excitation winding respectively.

14. The rotor (1) of the excitation motor according to claim 13, characterized in that: The excitation unit (200) comprises: an excitation stator (210); and An excitation rotor (220), wherein the excitation rotor (220) is sleeved on the rotating shaft (10) and rotates synchronously with the rotating shaft (10), and the excitation rotor (220) is connected to the conducting wire (50).

15. The rotor (1) of the excitation motor according to claim 13 or 14, characterized in that: The rotor core (40) covers the first threading opening (101), and one end of the conductive wire (50) is connected to the rotor excitation winding (401) through the first threading opening (101); The excitation unit (200) covers the second wire threading port (102), and the other end of the wire (50) is connected to the excitation unit (200) through the second wire threading port (102).

16. The rotor (1) of the excitation motor according to any one of claims 13 to 15, characterized in that: Also includes: a first plug (310), the first plug (310) being sealed at the first threading port (101), and the first plug (310) being provided with a first positioning hole (311) for the wire (50) to pass through; and A second plug (320), wherein the second plug (320) is sealed at the second wire threading port (102), and the second plug (320) is provided with a second positioning hole (321) for the wire (50) to pass through.

17. The rotor (1) of the excitation motor according to claim 16, characterized in that Each of the first plug (310) and the second plug (320) comprises: A plug-in section (330); and A positioning section (340), the positioning section (340) is connected to one end of the plug-in section (330), the cross-sectional area of ​​the positioning section (340) is greater than the cross-sectional area of ​​the plug-in section (330), the first threading opening (101) and the second threading opening (102) are both provided with a sink groove (150), and the positioning section (340) is stopped at the bottom wall of the sink groove (150).

18. The rotor (1) of the excitation motor according to claim 17, characterized in that The other end of the plug-in section (330) is provided with a guide portion (350), and the cross-sectional area of ​​the guide portion (350) gradually decreases in a direction away from the positioning section (340).

19. The rotor (1) of the excitation motor according to claim 18, characterized in that The outer circumferential surface of the plug-in section (330) is provided with a deformation groove (360) extending along its circumference, and the deformation groove (360) is adjacent to the guide portion (350) and is located on a side of the guide portion (350) facing the positioning section (340).

20. The rotor (1) of the excitation motor according to any one of claims 13 to 19, characterized in that: Also includes: a first connecting clamp (410), the first connecting clamp (410) clamping the rotor excitation winding (401) and the conducting wire (50) respectively, so that the rotor excitation winding (401) and the conducting wire (50) are connected through the first connecting clamp (410); and A second connecting clamp (420), wherein the second connecting clamp (420) clamps the excitation unit (200) and the conducting wire (50) respectively, so that the excitation unit (200) and the conducting wire (50) are connected via the second connecting clamp (420).

21. The rotor (1) of the excitation motor according to claim 20, characterized in that: Each of the first connecting clip (410) and the second connecting clip (420) comprises: substrate(430); A first clamping jaw (440); and A second clamp (450), wherein the first clamp (440) and the second clamp (450) are disposed on opposite sides of the substrate (430), the first clamp (440) is used to clamp the rotor excitation winding (401) or the excitation unit (200), and the second clamp (450) is used to clamp the wire (50).

22. The rotor (1) of the excitation motor according to claim 21, characterized in that Each of the first clamping jaw (440) and the second clamping jaw (450) comprises: a first resilient arm (460); and The second elastic arm (470) defines a clamping hole (480) and an inlet and outlet notch (490) that are in communication with each other, and the width of the inlet and outlet notch (490) is smaller than the aperture of the clamping hole (480).

23. The rotor (1) of the excitation motor according to claim 22, characterized in that: The central axis of the clamping hole (480) of the first clamping jaw (440) is perpendicular to the central axis of the clamping hole (480) of the second clamping jaw (450).

24. An excitation motor (1000), characterized in that: A rotor (1) comprising an excitation electric machine according to any one of claims 13-23.

25. A vehicle (2000), characterized in that: It comprises the excitation motor (1000) according to claim 24.

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