Rotor for an excitation motor, excitation motor and vehicle

Abstract

This invention discloses a rotor for an excitation motor, the excitation motor itself, and a vehicle. The rotor includes: a shaft of the excitation motor, the shaft having an internal wiring channel with a first wire inlet and a second wire inlet, both penetrating the outer surface of the shaft. The wiring channel accommodates wires connecting the excitation unit and the rotor excitation winding; an excitation unit; a rotor core, the shaft connected to the rotor core, the rotor core having a rotor excitation winding; wires passing through the first and second wire inlets and threaded into the wiring channel, connecting to the excitation unit and the excitation winding; a first clamp holding the rotor excitation winding and the wires; or a second clamp holding the excitation unit and the wires. The rotor prevents the wires connecting the excitation unit and the rotor excitation winding from being exposed outside the shaft, reducing the probability of insulation aging, short circuits, and other problems with the wires.

Description

Technical Field

[0001] This invention relates to the field of excitation motor technology, and in particular to an excitation motor rotor, an excitation motor, and a vehicle. Background Technology

[0002] 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 transmit energy and supply power to the rotor excitation winding. Excitation motors are characterized by their compact structure and flexible configuration. However, the wires between the excitation unit and the rotor excitation winding are usually directly exposed to the air. The wires are tied to the shaft with binding wires. Under the complex environment of external vibration, acceleration superposition, and strong centrifugal force of the rotor, these wires are prone to aging and failure, and are also prone to faults such as wire breakage and wire detachment, causing the excitation motor to fail to work properly. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a rotor for an excitation motor, wherein the shaft of the excitation motor can prevent the wires connecting the excitation unit and the rotor excitation winding from being exposed outside the shaft, thereby reducing the probability of problems such as insulation aging and short circuits in the wires.

[0004] The present invention also proposes an excitation motor having the rotor of the above-mentioned excitation motor.

[0005] The present invention also proposes a vehicle having the above-mentioned excitation motor.

[0006] To achieve the above objectives, a rotor for an excitation motor is provided according to a first aspect of the present invention, comprising: a rotating shaft of the excitation motor, the internal structure of which has a wiring channel, the wiring channel having a first wire inlet and a second wire inlet, the first wire inlet and the second wire inlet respectively penetrating the outer surface of the rotating shaft, the wiring channel for accommodating wires connecting an excitation unit and a rotor excitation winding; an excitation unit; a rotor core, the rotating shaft being connected to the rotor core, the rotor core having a rotor excitation winding; a wire, the wire passing through the first wire inlet and the second wire inlet and passing through the wiring channel, the wire being connected to the excitation unit and the excitation winding respectively; a first terminal clamp, the first terminal clamp clamping the rotor excitation winding and the wire respectively, so that the rotor excitation winding and the wire are connected through the first terminal clamp; or a second terminal clamp, the second terminal clamp clamping the excitation unit and the wire respectively, so that the excitation unit and the wire are connected through the second terminal clamp.

[0007] According to the first aspect of the present invention, the rotor of the excitation motor can prevent the wires connecting the excitation unit and the rotor excitation winding from being exposed outside the shaft, thereby reducing the probability of problems such as insulation aging and short circuits in the wires.

[0008] According to some embodiments of the present invention, both the first threading opening and the second threading opening penetrate the outer peripheral surface of the rotating shaft.

[0009] According to some embodiments of the present invention, the first threading opening and the second threading opening are spaced apart along the axial direction of the rotating shaft.

[0010] According to some embodiments of the present invention, the wiring channel includes: an axial segment extending axially along the shaft; a first radial segment extending radially along the shaft, one end of the first radial segment communicating with one end of the axial segment, and the other end of the first radial segment forming the first wire-passing opening; and a second radial segment extending radially along the shaft, one end of the second radial segment communicating with the other end of the axial segment, and the other end of the second radial segment forming the second wire-passing opening.

[0011] According to some embodiments of the present invention, the first radial segment and the second radial segment extend radially toward the same side of the axial segment along the axis of rotation.

[0012] According to some embodiments of the present invention, the length of the first radial segment is equal to the length of the second radial segment.

[0013] According to some embodiments of the present invention, the rotating shaft is configured with a process hole that extends axially along the rotating shaft and penetrates at least one end of the rotating shaft, the axial segment being a portion of the process hole.

[0014] According to some embodiments of the present invention, the portion of the process hole other than that constituting the axial segment is filled with a seal.

[0015] According to some embodiments of the present invention, the seal is an insulating element.

[0016] According to some embodiments of the present invention, the central axis of the process hole coincides with the central axis of the rotating shaft.

[0017] According to some embodiments of the present invention, the wiring channels are multiple and arranged circumferentially at intervals along the axis of rotation.

[0018] According to some embodiments of the present invention, there are two wiring channels arranged opposite each other in the radial direction of the rotating shaft.

[0019] According to some embodiments of the present invention, the excitation unit includes: an excitation stator; an excitation rotor, the excitation rotor being sleeved on the rotating shaft and rotating synchronously with the rotating shaft, and the excitation rotor being connected to the wire.

[0020] According to some embodiments of the present invention, the rotor core covers the first wire insertion port, and one end of the wire is connected to the rotor excitation winding through the first wire insertion port; the excitation unit covers the second wire insertion port, and the other end of the wire is connected to the excitation unit through the second wire insertion port.

[0021] According to some embodiments of the present invention, the rotor of the excitation motor further includes: a first plug, which blocks the first wire passage and has a first positioning hole for the wire to pass through; and a second plug, which blocks the second wire passage and has a second positioning hole for the wire to pass through.

[0022] According to some embodiments of the present invention, each of the first plug and the second plug includes: a plug-in section; a positioning section, the positioning section being connected to one end of the plug-in section, the cross-sectional area of ​​the positioning section being larger than the cross-sectional area of ​​the plug-in section, the first wire-passing opening and the second wire-passing opening both being provided with a recessed groove, and the positioning section stopping against the bottom wall of the recessed groove.

[0023] According to some embodiments of the present invention, the other end of the plug segment is provided with a guide portion, and the cross-sectional area of ​​the guide portion gradually decreases in the direction away from the positioning segment.

[0024] According to some embodiments of the present invention, the outer peripheral surface of the insertion segment is provided with a deformation groove extending circumferentially thereon, the deformation groove being adjacent to the guide portion and located on the side of the guide portion facing the positioning segment.

[0025] According to some embodiments of the present invention, the first terminal clamp clamps the rotor excitation winding and the wire respectively, so that the rotor excitation winding and the wire are connected through the first terminal clamp, and the second terminal clamp clamps the excitation unit and the wire respectively, so that the excitation unit and the wire are connected through the second terminal clamp.

[0026] According to some embodiments of the present invention, each of the first terminal clamp and the second terminal clamp includes: a base plate; a first clamp and a second clamp, the first clamp and the second clamp being disposed on opposite sides of the base plate, the first clamp being used to clamp the rotor excitation winding or the excitation unit, and the second clamp being used to clamp the wire.

[0027] According to some embodiments of the present invention, each of the first gripper and the second gripper includes: a first elastic arm and a second elastic arm, wherein a clamping hole and an access notch communicating with each other are defined between the first elastic arm and the second elastic arm, the width of the access notch being smaller than the diameter of the clamping hole.

[0028] According to some embodiments of the present invention, the central axis of the clamping hole of the first gripper is perpendicular to the central axis of the clamping hole of the second gripper.

[0029] According to a third aspect of the present invention, an excitation motor is provided, comprising the rotor of the excitation motor described in the second aspect of the present invention.

[0030] According to the third aspect embodiment of the excitation motor of the present invention, by utilizing the rotor of the excitation motor according to the second aspect embodiment of the present invention, it is possible to avoid the wires connecting the excitation unit and the rotor excitation winding being exposed outside the shaft, thereby reducing the probability of problems such as insulation aging and short circuits in the wires.

[0031] A vehicle is provided according to a fourth aspect of the present invention, including an excitation motor as described in a third aspect of the present invention.

[0032] According to the excitation motor of the fourth aspect embodiment of the present invention, by utilizing the excitation motor of the third aspect embodiment of the present invention, it is possible to avoid the wires connecting the excitation unit and the rotor excitation winding being exposed outside the shaft, thereby reducing the probability of problems such as insulation aging and short circuits in the wires.

[0033] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the rotor according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the rotor from another perspective according to an embodiment of the present invention.

[0036] Figure 3 This is a cross-sectional view of the rotor according to an embodiment of the present invention.

[0037] Figure 4 yes Figure 3 A magnified view of a portion of region A in the middle.

[0038] Figure 5This is a schematic diagram showing the connection between the first terminal clamp of the rotor and the rotor excitation winding on the rotor core according to an embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of the connection between the first terminal clamp of the rotor and the rotor excitation winding on the rotor core according to an embodiment of the present invention.

[0040] Figure 7 This is a schematic diagram of the structure of the first terminal clamp (second terminal clamp) of the rotor according to an embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of the structure of the first plug (second plug) of the rotor according to an embodiment of the present invention.

[0042] Figure 9 This is a structural schematic diagram of the first plug (second plug) of the rotor according to an embodiment of the present invention from another perspective.

[0043] Figure 10 This is a cross-sectional view of the rotating shaft according to an embodiment of the present invention.

[0044] Figure 11 This is a cross-sectional view of the rotating shaft according to another embodiment of the present invention.

[0045] Figure label: Rotor 1 Shaft 10, Seal 20, Rotor Core 40, Wire 50 Wiring channel 100, first wire pass 101, second wire pass 102, axial section 110, first radial section 120, second radial section 130, process hole 140, countersunk groove 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, insertion section 330, positioning section 340, guide part 350, deformation groove 360. First connector 410, second connector 420, substrate 430, first gripper 440, second gripper 450, first elastic arm 460, second elastic arm 470, clamping hole 480, inlet / outlet notch 490 Bearing 500, end cap 600. Detailed Implementation

[0046] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] In the description of this invention, "a plurality of" means two or more.

[0049] The shaft 10 of the excitation motor according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0050] like Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown, the internal structure of the shaft 10 of the excitation motor according to an embodiment of the present invention includes a wiring channel 100. The wiring channel 100 has a first wire inlet 101 and a second wire inlet 102. The first wire inlet 101 and the second wire inlet 102 respectively penetrate the outer surface of the shaft 10. The wiring channel 100 is used to accommodate the wires 50 that connect the excitation unit 200 and the rotor excitation winding.

[0051] According to an embodiment of the present invention, the shaft 10 of the excitation motor is provided with a wire 50 arranged in the wiring channel 100 inside the shaft 10. One end of the wire 50 passes through the first wiring port 101 and extends out of the shaft 10, and the other end of the wire 50 passes through the second wiring port 102 and extends out of the shaft 10. The two ends of the wire 50 are respectively connected to the excitation unit 200 and the rotor excitation winding, which can ensure that the DC power output by the excitation unit 200 is reliably output to the rotor excitation winding through the wire 50.

[0052] 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, which may cause problems such as insulation aging and short circuit. At the same time, the above wiring method has a simple structure and is easy to implement.

[0053] Thus, according to the embodiment of the present invention, the shaft 10 of the excitation motor can avoid the wires 50 connecting the excitation unit 200 and the rotor excitation winding being exposed outside the shaft 10, thereby reducing the probability of problems such as insulation aging and short circuits in the wires 50.

[0054] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown, both the first wire-through port 101 and the second wire-through port 102 penetrate the outer circumferential surface of the rotating shaft 10. The rotor excitation winding and the excitation unit 200 are generally sleeved on the rotating shaft 10, that is, the rotor excitation winding surrounds the outer circumferential surface of the rotating shaft 10, and the excitation unit 200 surrounds the outer circumferential surface of the rotating shaft 10. By having the first wire-through port 101 and the second wire-through port 102 penetrate the outer circumferential surface of the rotating shaft 10, it is convenient for the wire 50 to extend from the first wire-through port 101 and the second wire-through port 102 to connect with the rotor excitation winding and the excitation unit 200.

[0055] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown, the first wire inlet 101 and the second wire inlet 102 are spaced apart along the axial direction of the rotating shaft 10. The rotor excitation winding 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 wire inlet 101 and the second wire inlet 102, they can be more easily connected to the rotor excitation winding and the excitation unit 200.

[0056] For example, the first wire inlet 101 is closer to the rotor excitation winding than the second wire inlet 102, and the second wire inlet 102 is closer to the excitation unit 200 than the first wire inlet 101. One end of the wire 50 from the first wire inlet 101 can be connected to the rotor excitation winding, and one end of the wire 50 from the second wire inlet 102 can be connected to the excitation unit 200.

[0057] It should be noted that the positions of the first wire inlet 101 and the second wire inlet 102 can be interchanged. That is, the first wire inlet 101 is closer to the excitation unit 200 than the second wire inlet 102, and the second wire inlet 102 is closer to the rotor excitation winding than the first wire inlet 101. One end of the wire 50 from the first wire inlet 101 can be connected to the excitation unit 200, and one end of the wire 50 from the second wire inlet 102 can be connected to the rotor excitation winding.

[0058] According to some specific embodiments of the present invention, such as Figure 10 and Figure 11 As shown, the wiring channel 100 includes an axial segment 110, a first radial segment 120, and a second radial segment 130.

[0059] The axial segment 110 extends along the axial direction of the rotating shaft 10, the first radial segment 120 extends along the radial direction of the rotating shaft 10, one end of the first radial segment 120 is connected to one end of the axial segment 110, and the other end of the first radial segment 120 forms a first threading opening 101. The second radial segment 130 extends along the radial direction of the rotating shaft 10, one end of the second radial segment 130 is connected to the other end of the axial segment 110, and the other end of the second radial segment 130 forms a second threading opening 102.

[0060] 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 can be 90°, which facilitates the installation of the wire 50 into the rotating shaft 10.

[0061] By dividing the wiring channel 100 into an axial segment 110, a first radial segment 120, and a second radial segment 130, it is convenient to arrange the first wire inlet 101 and the second wire inlet 102 at intervals along the axial direction of the rotating shaft 10, and it is also convenient to arrange the wires 50.

[0062] According to some specific embodiments of the present invention, such as Figure 10 and Figure 11 As shown, the first radial segment 120 and the second radial segment 130 extend radially toward the same side of the axial segment 110 along the shaft 10. This shortens the length of the conductor 50, and the first radial segment 120 and the second radial segment 130 can be machined from the same side of the shaft 10, making machining more convenient.

[0063] According to some specific embodiments of the present invention, such as Figure 10 and Figure 11 As shown, the length of the first radial segment 120 is equal to the length of the second radial segment 130. This ensures that the central axis of the axial segment 110 is parallel to the central axis of the rotating shaft 10, shortening the length of the axial segment 110 and reducing machining difficulty. Furthermore, since the central axes of the first radial segment 120 and the second radial segment 130 are parallel, their machining standards are approximately the same, further reducing machining difficulty and improving production efficiency.

[0064] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 and Figure 11 As shown, the rotating shaft 10 is constructed with a process hole 140, which extends along the axial direction of the rotating shaft 10 and passes through at least one end of the rotating shaft 10. The axial segment 110 is formed by a portion of the process hole 140. Since the process hole 140 only needs to extend inward from the end face of the rotating shaft 10 along the axial direction of the rotating shaft 10, the machining difficulty of the process hole 140 is relatively low, which can reduce the machining difficulty of the axial segment 110, simplify the structure of the rotating shaft 10, and improve production efficiency.

[0065] According to some specific embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the portion of the process hole 140 other than the axial section 110 is filled with a sealant 20. The sealant 20 can be epoxy resin, and it can be filled into the process hole 140 by potting. First, the wire 50 is inserted into the wiring channel 100, and then the sealant 20 is filled into the process hole 140.

[0066] This avoids the wire 50 being exposed to air through the process hole 140, reduces the probability of the insulation layer of the wire 50 aging due to the strong centrifugal force and high temperature of the rotor 1 during long-term operation of the excitation motor, and increases the structural strength of the shaft 10.

[0067] According to some specific embodiments of the present invention, the seal 20 is an insulating component. 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 exciter 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 circuit in the wire 50, and making the electrical performance of the exciter motor safer and more reliable.

[0068] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 and Figure 11 As shown, 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 even, avoids eccentricity when the rotating shaft 10 rotates, improves the working stability of the exciter motor, and reduces noise caused by the vibration of the exciter motor.

[0069] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown, there are multiple wiring channels 100 arranged at circumferential intervals along the rotating shaft 10. By setting multiple wiring channels 100, multiple wires 50 can be set between the excitation unit 200 and the rotor excitation winding, making the electrical connection between the excitation unit 200 and the rotor excitation winding more reliable.

[0070] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 10 and Figure 11As shown, there are two wiring channels 100, which are arranged opposite each other in the radial direction of the rotating shaft 10. One wiring channel 100 contains a wire 50 that connects the positive terminal of the excitation unit 200 to the positive terminal of the rotor excitation winding, while the other wiring channel 100 contains a wire 50 that connects the negative terminal of the excitation unit 200 to the negative terminal of the rotor excitation winding. This forms a complete conductive loop between the excitation unit 200 and the rotor excitation winding. Furthermore, the two wires 50 are positioned on opposite sides of the rotating shaft 10 in the radial direction, reducing the risk of short circuits and improving safety.

[0071] The rotor 1 of the excitation motor according to an embodiment of the present invention, such as Figures 1-11 As shown, the rotor 1 of the excitation motor includes a rotating shaft 10, an excitation unit 200, a rotor core 40, and a wire 50 according to the above embodiment of the present invention.

[0072] The rotating shaft 10 is connected to the rotor core 40. The rotor core 40 is provided with a rotor excitation winding. The wire 50 passes through the first wire through hole 101 and the second wire through hole 102 and is installed in the wiring channel 100. The wire 50 is connected to the excitation unit 200 and the excitation winding respectively.

[0073] For example, rotor 1 has rotor winding slots on its iron core, and rotor excitation windings are wound around the rotor winding slots. The rotor excitation windings of adjacent poles are wound in opposite directions. When a DC excitation current is applied to the rotor excitation windings, a rotor magnetic field with alternating N and S poles is generated.

[0074] In addition, after the rotor excitation winding is wound on the rotor core 40, end caps 600 are provided on opposite sides of the rotor excitation winding on the rotating shaft 10. The end caps 600 can be made of aluminum or stainless steel. The end caps 600 have the function of shielding the magnetic field and protecting the ends of the rotor excitation winding. The excitation unit 200 is spaced apart from the end caps 600 in the axial direction of the rotating shaft 10.

[0075] A bearing 500 is fitted 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.

[0076] According to an embodiment of the present invention, the rotor 1 of the excitation motor can avoid the wires 50 connecting the excitation unit 200 and the rotor excitation winding being exposed outside the shaft 10 by utilizing the shaft 10 of the excitation motor according to the above embodiment of the present invention, thereby reducing the probability of problems such as insulation aging and short circuits in the wires 50.

[0077] According to some specific embodiments of the present invention, such as Figure 3 As shown, 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.

[0078] For example, the excitation unit 200 is a rotary 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 rotary transformer, the excitation rotor 220 is the secondary side of the rotary 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 and supply power to the rotor excitation winding through the electric field and magnetic field as the medium.

[0079] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 , Figure 10 and Figure 11 As shown, the rotor core 40 covers the first wire hole 101, one end of the wire 50 is connected to the rotor excitation winding through the first wire hole 101, the excitation unit 200 covers the second wire hole 102, and the other end of the wire 50 is connected to the excitation unit 200 through the second wire hole 102.

[0080] Specifically, the end cover 600 covers the first wiring port 101, and the seal 20 connects the end cover 600 and the shaft 10 into a whole, which facilitates heat dissipation at the end of the rotor excitation winding and improves the structural strength of the rotor 1. Furthermore, the seal 20 connects the excitation rotor 220 of the excitation unit 200 and the shaft 10 into a whole, which facilitates heat dissipation at the end of the excitation rotor 220 and improves the structural strength of the rotor 1.

[0081] In addition, the short distance between the conductor 50 and the rotor excitation winding, as well as the short distance between the conductor 50 and the excitation unit 200, effectively reduces the volume of the conductor 50 exposed to air, thereby reducing the probability of problems such as insulation aging and short circuits caused by the strong centrifugal force and high temperature of the rotor 1.

[0082] According to some specific embodiments of the present invention, such as Figure 3 , Figure 4 Diagram and Figure 9 As shown, the rotor 1 of the excitation motor also includes a first plug 310 and a second plug 320. The first plug 310 is sealed at the first wire passage 101 and has a first positioning hole 311 for the wire 50 to pass through. The second plug 320 is sealed at the second wire passage 102 and has a second positioning hole 321 for the wire 50 to pass through.

[0083] For example, the first plug 310 and the second plug 320 can be made of insulating material. The first plug 310 can fix the relative position between the wire 50 and the inner wall of the first through-hole 101, preventing the wire 50 from wobbling within the first through-hole 101. The first plug 310 also separates the wire 50 from the inner wall of the first through-hole 101, increasing the insulation performance between the wire 50 and the shaft 10. The second plug 320 can fix the relative position between the wire 50 and the inner wall of the second through-hole 102, preventing the wire 50 from wobbling within the second through-hole 102. The second plug 320 also separates the wire 50 from the inner wall of the second through-hole 102, increasing the insulation performance between the wire 50 and the shaft 10.

[0084] In addition, the first plug 310 and the second plug 320 can block the first wire passage 101 and the second wire passage 102, preventing the seal 20 from flowing out of the rotating shaft 10 from the first wire passage 101 and the second wire passage 102.

[0085] According to some specific embodiments of the present invention, such as Figure 4 , Figures 8-11 As shown, each of the first plug 310 and the second plug 320 includes 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, and the cross-sectional area of ​​the positioning section 340 is larger than that of the plug-in section 330. Both the first wire-passing port 101 and the second wire-passing port 102 are provided with a recess, and the positioning section 340 stops against the bottom wall of the recess 150.

[0086] The insertion section 330 of the first plug 310 can seal with the inner wall of the first wire passage 101, and the insertion section 330 of the second plug 320 can seal with the inner wall of the second wire passage 102, thereby achieving a seal for the first wire passage 101 and the second wire passage 102.

[0087] By engaging the positioning section 340 of the first plug 310 with the recess 150 of the first wire-passing opening 101, the relative position of the first plug 310 and the first wire-passing opening 101 can be determined, preventing the first plug 310 from being excessively inserted into the first wire-passing opening 101. Similarly, by engaging the positioning section 340 of the second plug 320 with the recess 150 of the second wire-passing opening 102, the relative position of the second plug 320 and the second wire-passing opening 102 can be determined, preventing the second plug 320 from being excessively inserted into the second wire-passing opening 102.

[0088] For example, one side of the back-facing insertion section 330 of the positioning section 340 can be on 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, thus improving the cleanliness.

[0089] According to some specific embodiments of the present invention, such as Figure 8 and Figure 9 As shown, the other end of the plug section 330 is provided with a guide section 350, the cross-sectional area of ​​which gradually decreases in the direction away from the positioning section 340. In this way, the guide section 350 can play a guiding role, so as to facilitate the insertion of the plug section 330 of the first plug 310 into the first wire-passing port 101, and to facilitate the insertion of the plug section 330 of the second plug 320 into the second wire-passing port 102, thereby reducing assembly difficulty and improving assembly efficiency.

[0090] According to some specific embodiments of the present invention, such as Figure 8 and Figure 9 As shown, the outer peripheral surface of the insertion section 330 is provided with a deformation groove 360 ​​extending circumferentially therein. The deformation groove 360 ​​is adjacent to the guide portion 350 and located on the side of the guide portion 350 facing the positioning section 340. During the insertion process of the insertion 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 assembly difficulty and improving the assembly efficiency.

[0091] According to some specific embodiments of the present invention, such as Figures 4-7 As shown, the rotor 1 of the excitation motor also includes a first terminal clamp 410 and a second terminal clamp 420.

[0092] The first terminal clamp 410 clamps the rotor excitation winding and the wire 50 respectively, so that the rotor excitation winding and the wire 50 are connected through the first terminal clamp 410. The second terminal 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 terminal clamp 420.

[0093] For example, the first terminal clamp 410 and the second terminal clamp 420 can be made of copper to achieve electrical connection between the rotor excitation winding and the conductor 50 through the first terminal clamp 410. The outer surfaces of the first terminal clamp 410 and the second terminal clamp 420 can be tin-plated. Furthermore, the seal 20 can be connected to the first terminal clamp 410, the second terminal clamp 420, and the rotating shaft 10 as a whole.

[0094] The rotor excitation winding and the wire 50 are connected by the first terminal clamp 410. The rotor excitation winding and the wire 50 do not need to be directly connected. The connection is convenient and stable and is not easy to separate under the high-speed rotation of the excitation motor. Furthermore, the rotor excitation winding and the wire 50 are clamped by the first terminal clamp 410, which ensures high stability of the electrical connection. The wire 50 can be welded to the first terminal clamp 410 after being clamped, which further improves the connection stability.

[0095] The excitation unit 200 and the wire 50 are connected by the second terminal clamp 420. The excitation unit 200 and the wire 50 do not need to be directly connected, which is convenient for temperature control and is not easy to separate under the high-speed rotation of the excitation motor. Furthermore, the second terminal clamp 420 holds the excitation unit 200 and the wire 50, which ensures high stability of the electrical connection. The wire 50 can be welded to the second terminal clamp 420 after being held by it, which further improves the connection stability.

[0096] According to some specific embodiments of the present invention, such as Figures 4-7 As shown, each of the first terminal clamp 410 and the second terminal clamp 420 includes a base plate 430, a first clamp 440, and a second clamp 450.

[0097] The first gripper 440 and the second gripper 450 are respectively disposed on opposite sides of the substrate 430. The first gripper 440 is used to hold the rotor excitation winding or excitation unit 200, and the second gripper 450 is used to hold the wire 50.

[0098] In other words, the first clamp 140 clamps the rotor excitation winding and the wire 50 respectively through the first clamp 440 and the second clamp 450, and the second clamp 420 clamps the excitation unit 200 and the wire 50 respectively through the first clamp 440 and the second clamp 450. The first clamp 440 and the second clamp 450 are separated by the substrate 430. In this way, the rotor excitation winding or the excitation unit 200 is less likely to interfere with the wire 50, and the clamping is more stable and reliable.

[0099] According to some specific embodiments of the present invention, such as Figures 4-7 As shown, each of the first gripper 440 and the second gripper 450 includes a first elastic arm 460 and a second elastic arm 470, with a clamping hole 480 and an inlet / outlet notch 490 communicating with each other defined between the first elastic arm 460 and the second elastic arm 470, the width of the inlet / outlet notch 490 being smaller than the diameter of the clamping hole 480.

[0100] The wire 50 can enter the clamping hole 480 through the inlet / outlet notch 490. The diameter of the clamping hole 480 and the width of the inlet / outlet notch 490 can both 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 clamping force to the wire 50, making the connection between the wire 50 and the second gripper 450 more reliable. Furthermore, since the width of the inlet / outlet notch 490 is smaller than the diameter of the clamping hole 480, the wire 50 is less likely to detach from the clamping hole 480.

[0101] Similarly, the winding assembly on the excitation unit 200 can also enter the clamping hole 480 through the inlet / outlet notch 490. The diameter of the clamping hole 480 and the width of the inlet / outlet notch 490 can both be smaller than the diameter of the winding assembly on the excitation unit 200. In this way, the first elastic arm 460 and the second elastic arm 470 can apply clamping force to the winding assembly on the excitation unit 200, making the connection between the winding assembly on the excitation unit 200 and the first jaw 440 of the second terminal clamp 420 more reliable. Furthermore, since the width of the inlet / outlet notch 490 is smaller than the diameter of the clamping hole 480, the winding assembly on the excitation unit 200 is less likely to detach from the clamping hole 480.

[0102] The rotor excitation winding can also enter the clamping hole 480 through the inlet / outlet notch 490. The diameter of the clamping hole 480 and the width of the inlet / outlet notch 490 can both be smaller than the diameter of the rotor excitation winding. In this way, the first elastic arm 460 and the second elastic arm 470 can apply clamping force to the rotor excitation winding, making the connection between the rotor excitation winding and the first jaw 440 of the first terminal clamp 410 more reliable. Furthermore, since the width of the inlet / outlet notch 490 is smaller than the diameter of the clamping hole 480, the rotor excitation winding is less likely to detach from the clamping hole 480.

[0103] According to some specific embodiments of the present invention, such as Figures 4-7 As shown, the central axis of the clamping hole 480 of the first clamp 440 is perpendicular to the central axis of the clamping hole 480 of the second clamp 450. This facilitates the connection of the first terminal clamp 410 to the rotor excitation winding and the wire 50, and facilitates the connection of the second terminal clamp 420 to the excitation unit 200 and the wire 50, making the connection more convenient and improving the assembly efficiency.

[0104] The excitation motor according to an embodiment of the present invention is described below with reference to the accompanying drawings. The excitation motor includes a rotor 1 according to the above embodiment of the excitation motor.

[0105] According to the excitation motor of the present invention, by utilizing the rotor 1 of the excitation motor of the present invention, the wires 50 of the excitation unit 200 and the rotor excitation winding can be prevented from being exposed outside the shaft 10, thereby reducing the probability of problems such as insulation aging and short circuit of the wires 50.

[0106] The following description, with reference to the accompanying drawings, describes a vehicle according to an embodiment of the present invention, the vehicle including an excitation motor according to the above-described embodiment of the present invention.

[0107] According to the excitation motor of the present invention, by utilizing the excitation motor of the present invention according to the above embodiment, it is possible to avoid the wires 50 of the excitation unit 200 and the rotor excitation winding being exposed outside the shaft 10, thereby reducing the probability of problems such as insulation aging and short circuits in the wires 50.

[0108] The shaft 10 of the excitation motor, the rotor 1 of the excitation motor, other components of the excitation motor and the vehicle, and their operation according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0109] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0110] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotor of an electrically excited electric machine, characterized in that include: The excitation motor has a rotating shaft with an internal structure containing a wiring channel. The wiring channel has a first wire inlet and a second wire inlet, which respectively pass through the outer surface of the rotating shaft. The wiring channel is used to accommodate wires connecting the excitation unit and the rotor excitation winding. Excitation unit; A rotor core, wherein the rotating shaft is connected to the rotor core, and the rotor core is provided with a rotor excitation winding; A wire is inserted into the wiring channel through the first wire insertion port and the second wire insertion port, and the wire is connected to the excitation unit and the excitation winding respectively. A first terminal clamp, which clamps the rotor excitation winding and the wire respectively, so that the rotor excitation winding and the wire are connected through the first terminal clamp. The first terminal clamp includes: a base plate; a first jaw and a second jaw, the first jaw and the second jaw being disposed on opposite sides of the base plate, the first jaw being used to clamp the rotor excitation winding, and the second jaw being used to clamp the wire; or The second terminal clamp clamps the excitation unit and the wire respectively, so that the excitation unit and the wire are connected through the second terminal clamp. The second terminal clamp includes: a base plate; a first clamp and a second clamp, the first clamp and the second clamp are respectively disposed on opposite sides of the base plate, the first clamp is used to clamp the excitation unit, and the second clamp is used to clamp the wire.

2. A rotor of an excited electric machine according to claim 1, characterized in that Both the first threading opening and the second threading opening penetrate the outer circumferential surface of the rotating shaft.

3. The rotor of the excitation motor according to claim 2, characterized in that, The first threading port and the second threading port are spaced apart along the axial direction of the rotating shaft.

4. The rotor of the excitation motor according to claim 1, characterized in that, The wiring channel includes: An axial segment that extends axially along the shaft. A first radial segment extends radially along the shaft, one end of the first radial segment is connected to one end of the axial segment, and the other end of the first radial segment forms the first threading opening; The second radial segment extends radially along the axis of rotation, with one end of the second radial segment communicating with the other end of the axial segment, and the other end of the second radial segment forming the second threading opening.

5. The rotor of the excitation motor according to claim 4, characterized in that, The first radial segment and the second radial segment extend radially toward the same side of the axial segment along the axis of rotation.

6. The rotor of the excitation motor according to claim 4, characterized in that, The length of the first radial segment is equal to the length of the second radial segment.

7. The rotor of the excitation motor according to claim 4, characterized in that, The rotating shaft is provided with a process hole that 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 formed by a portion of the process hole.

8. The rotor of the excitation motor according to claim 7, characterized in that, The portion of the process hole other than that constituting the axial section is filled with a seal.

9. The rotor of the excitation motor according to claim 8, characterized in that, The sealing element is an insulating element.

10. The rotor of the excitation motor according to claim 7, characterized in that, The central axis of the process hole coincides with the central axis of the rotating shaft.

11. The rotor of the excitation motor according to any one of claims 1-10, characterized in that, The wiring channels are multiple and arranged circumferentially along the axis of rotation.

12. The rotor of the excitation motor according to claim 11, characterized in that, There are two wiring channels, which are arranged opposite each other in the radial direction of the rotating shaft.

13. The rotor of the excitation motor according to claim 1, characterized in that, The excitation unit includes: Excitation stator; An excitation rotor is sleeved on the rotating shaft and rotates synchronously with the rotating shaft. The excitation rotor is connected to the wire.

14. The rotor of the excitation motor according to claim 1, characterized in that, The rotor core covers the first wire hole, and one end of the wire is connected to the rotor excitation winding through the first wire hole; The excitation unit covers the second wire hole, and the other end of the wire is connected to the excitation unit through the second wire hole.

15. The rotor of the excitation motor according to claim 1, characterized in that, Also includes: The first plug is located at the first wire passage and has a first positioning hole for the wire to pass through. The second plug is located at the second wire passage and has a second positioning hole for the wire to pass through.

16. The rotor of the excitation motor according to claim 15, characterized in that, Each of the first plug and the second plug includes: Plug-in 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 that of the plug-in section. Both the first wire-passing port and the second wire-passing port are provided with a recessed groove. The positioning section stops against the bottom wall of the recessed groove.

17. The rotor of the excitation motor according to claim 16, characterized in that, The other end of the insertion section is provided with a guide portion, and the cross-sectional area of ​​the guide portion gradually decreases in the direction away from the positioning section.

18. The rotor of the excitation motor according to claim 17, characterized in that, The outer peripheral surface of the insertion section is provided with a deformation groove extending circumferentially thereon, the deformation groove being adjacent to the guide portion and located on the side of the guide portion facing the positioning section.

19. The rotor of the excitation motor according to claim 1, characterized in that, The first terminal clamp clamps the rotor excitation winding and the wire respectively, so that the rotor excitation winding and the wire are connected through the first terminal clamp, and the second terminal clamp clamps the excitation unit and the wire respectively, so that the excitation unit and the wire are connected through the second terminal clamp.

20. The rotor of the excitation motor according to claim 1, characterized in that, Each of the first gripper and the second gripper includes: A first elastic arm and a second elastic arm define a clamping hole and an inlet / outlet notch that communicate with each other, the width of the inlet / outlet notch being smaller than the diameter of the clamping hole.

21. The rotor of the excitation motor according to claim 20, characterized in that, The central axis of the clamping hole of the first gripper is perpendicular to the central axis of the clamping hole of the second gripper.

22. An excitation motor, characterized in that, The rotor of the excitation motor includes any one of claims 1-21.

23. A vehicle, characterized in that, Including the excitation motor according to claim 22.

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