Motor device and vehicle

Abstract

The present application discloses a motor device and a vehicle. The motor device comprises a stator assembly and a rotor assembly; an accommodating space is formed inside the stator assembly; the rotor assembly comprises a rotor body and a rotating shaft; the rotating shaft is connected to the rotor body; the rotor body is located in the accommodating space of the stator assembly; the rotating shaft comprises a first end and a second end which protrude out of two axial ends of the rotor body; an electric brush assembly is arranged at the first end; and a resolver assembly is arranged at the second end.

Description

Motor device and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 29, 2024, with application number 202410382776.8 and invention name “Motor Device and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of motors, and in particular to a motor device and a vehicle. Background Art

[0003] In related art, an electromagnetic motor typically includes a housing, a stator assembly, and a rotor assembly. The stator and rotor assemblies are located within the housing. Both the stator and rotor assemblies are equipped with coil windings. However, the brushes of the brush assembly typically generate a high voltage difference when energized. Technical issues

[0004] The high voltage difference interferes with the measurement signal of the rotary transformer assembly. Therefore, a new technical solution is needed to solve the above technical problems. Technical Solutions

[0005] One object of the present application is to provide a new technical solution for an electric motor device and a vehicle.

[0006] According to a first aspect of the present application, a motor device is provided. The device includes: a stator assembly and a rotor assembly, wherein the stator assembly defines an accommodation space therein; the rotor assembly includes a rotor body and a rotating shaft, wherein the rotating shaft is connected to the rotor body and the rotor body is located within the accommodation space of the stator assembly; the rotating shaft includes a first end and a second end protruding from axial ends of the rotor body; a brush assembly is disposed at the first end, and a rotary transformer assembly is disposed at the second end.

[0007] In some embodiments of the present application, the stator assembly includes: a first winding; and a stator body, the stator body is connected to the first winding, the stator body is provided with a plurality of heat dissipation channels, the plurality of heat dissipation channels are arranged along the circumference of the stator body, and the density of the heat dissipation channels located at the upper part of the stator body is greater than the density of the heat dissipation channels located at the lower part of the stator body.

[0008] In some embodiments of the present application, the heat dissipation channel extends along the axial direction of the stator body.

[0009] In some embodiments of the present application, the stator body is annular, a receiving space is formed in the middle of the stator body, and the plurality of heat dissipation channels are located on a side of the stator body away from the receiving space.

[0010] In some embodiments of the present application, the plurality of heat dissipation channels are divided into a plurality of groups of heat dissipation channels arranged along the axial direction of the stator body, each group of heat dissipation channels is arranged along the circumferential direction of the stator body, and a gap is formed between two adjacent groups of heat dissipation channels, and the gap is suitable for connection with the inlet of the heat dissipation channel.

[0011] In some embodiments of the present application, the motor device includes two first windings, and the two first windings are respectively located on both sides of the axial direction of the stator body.

[0012] In some embodiments of the present application, the brush assembly includes a mounting frame, a first brush and a second brush, the first brush and the second brush are elastically mounted on the mounting frame, and the mounting frame is sleeved outside the rotating shaft.

[0013] In some embodiments of the present application, a first slip ring and a second slip ring are provided on the rotating shaft, the first slip ring contacts the first brush, the second slip ring contacts the second brush, and the first slip ring and the second slip ring are arranged along the axial direction of the rotating shaft.

[0014] In some embodiments of the present application, the first brush and the second brush are slidably disposed on the mounting bracket, and elastic elements are disposed between the mounting bracket and the first brush and between the mounting bracket and the second brush.

[0015] In some embodiments of the present application, the first brush and the second brush are of the same model.

[0016] In some embodiments of the present application, the motor device further includes a cable mounting seat, and the cable mounting seat is connected to the conducting wire of the first winding.

[0017] In some embodiments of the present application, the cable mounting seat includes a fixing portion and a receiving portion, the receiving portion is provided with a receiving groove, the receiving groove is suitable for receiving the wire, the receiving portion is connected to the fixing portion, and the fixing portion is located at the notch of the receiving groove.

[0018] In some embodiments of the present application, the cable mounting seat further includes a conductive bar, one end of the conductive bar is provided with a connection hole, the connection hole is suitable for connecting the wire end of the wire of the first winding, the other end of the conductive bar is provided with a first through hole, and the fixing portion is provided with a threaded hole opposite to the first through hole.

[0019] In some embodiments of the present application, the fixing portion has a bottom and a side, the accommodating portion is located at the bottom, and the threaded hole is located at the side.

[0020] In some embodiments of the present application, a recessed groove is provided on a side of the fixing portion, the threaded hole is provided in the recessed groove, and one end of the conductive bar is embedded in the recessed groove.

[0021] In some embodiments of the present application, the fixing portion is provided with a first lug, the accommodating portion is provided with a second lug, and the first lug is connected to the second lug.

[0022] In some embodiments of the present application, the motor device further includes a speed reduction mechanism and a heat exchange mechanism, the speed reduction mechanism is connected to the rotating shaft, and the heat exchange mechanism is connected to the speed reduction mechanism.

[0023] In some embodiments of the present application, the heat exchange mechanism includes a plurality of stacked metal sheets, and a heat conduction channel is formed between two adjacent metal sheets.

[0024] According to a second aspect of the present application, a vehicle is provided, comprising the motor device described above. Beneficial effects

[0025] In this embodiment, the brush assembly and resolver assembly are positioned at either end of the rotating shaft. This creates a large distance between the brush assembly and resolver assembly, with the stator assembly and other components positioned between them. This arrangement prevents the high voltage differential across the brush assembly from adversely affecting the resolver assembly's measurement accuracy.

[0026] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0028] FIG1 is an exploded view of a motor according to an embodiment of the present application.

[0029] FIG2 is a cross-sectional view of a motor according to an embodiment of the present application.

[0030] FIG3 is an exploded view of a cable mounting base and a stator assembly according to an embodiment of the present application.

[0031] FIG4 is a perspective view of a rotating shaft according to an embodiment of the present application.

[0032] FIG5 is a side view of a stator body according to an embodiment of the present application.

[0033] FIG6 is a schematic diagram of a module of a vehicle according to an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. Brush assembly; 2. First bearing; 3. Bearing pressure plate; 4. Cable mounting seat; 5. First winding; 51. Connecting teeth; 6. Stator body; 61. Heat dissipation channel; 62. Gap; 7. Rotor body; 8. First slip ring; 9. Rotating shaft; 91. First end; 92. Second end; 10. Rotary transformer stator; 11. Rotary transformer rotor; 12. Second bearing; 13. First retaining spring; 14. Third bearing; 15. First transmission gear shaft; 1 6. Fourth bearing; 17. Second retaining spring; 19. Second transmission gear shaft; 27. Oil pump; 28. Heat exchange mechanism; 29. ​​Connector; 31. First brush; 30. Second brush; 32. Second slip ring; 33. Accommodation portion; 331. Accommodation groove; 332. Second lug; 34. Fixing portion; 341. First lug; 342. Countersunk groove; 343. Threaded hole; 35. Conductive bar; 351. First through hole; 36. Mounting bracket; 37. Wire.

[0036] Implementation Methods of the Application

[0037] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] According to one embodiment of the present application, a motor device 1000 is provided. As shown in FIG1 to FIG5 , the motor device 1000 includes:

[0043] The stator assembly and the rotor assembly form an accommodating space inside the stator assembly. The rotor assembly includes a rotor body 7 and a rotating shaft 9. The rotating shaft 9 is connected to the rotor body 7. The rotor body 7 is located in the accommodating space of the stator assembly. The rotating shaft 9 includes a first end 91 and a second end 92 protruding from the axial ends of the rotor body 7. A brush assembly 1 is provided at the first end 91, and a rotating transformer assembly is provided at the second end 92.

[0044] Specifically, the motor device is an electromagnetic motor. This motor device has excellent heat dissipation. The rotating shaft 9 is connected to the rotor body 7 by an interference fit or integral molding. The rotor body 7 is located within the storage space of the stator assembly. The rotor body 7 rotates within the storage space.

[0045] The rotor body 7 includes a rotor core and a second winding. The rotor core is, for example, sintered iron. The rotor core can be an integral structure or can include a plurality of metal sheets stacked in layers. The second winding is arranged on the rotor core. For example, the second winding is wound along the radial direction of the rotor core. That is, the axial direction of the second winding is parallel to the radial direction of the rotor core. The rotor body 7 is located in the accommodating space of the stator assembly. The radial direction of the rotor core is parallel to the radial direction of the stator body 6. The axial direction of the rotor core is parallel to the axial direction of the stator body 6. The rotor body 7 is connected to the rotating shaft 9 by a keyway connection. The rotating shaft 9 has an axial through hole. The axial through hole of the rotating shaft 9 is used to pass heat transfer oil to cool the rotating shaft 9 and / or the rotor assembly.

[0046] A direct current is passed through the second winding, which forms a magnetic field after being energized. This magnetic field interacts with the magnetic field formed by the first winding 5, thereby causing the rotor assembly to rotate.

[0047] The motor device also includes a brush assembly 1 and a rotary transformer assembly 50. The rotating shaft 9 includes a first end 91 and a second end 92 protruding from the axial ends of the rotor body 7. The brush assembly 1 is provided at the first end 91, and the rotary transformer assembly 50 is provided at the second end 92.

[0048] As shown in Figures 1 and 2, the brush assembly 1 is fixed to the housing (not shown) of the motor device. The brush assembly 1 is sleeved on the first end 91 of the rotating shaft 9. The rotating shaft 9 can rotate relative to the brush assembly 1. A first bearing 2 is also provided at the first end 91. The brush assembly 1 and the first bearing 2 are arranged on the housing of the motor device. The rotary transformer assembly 50 is used to measure the angular displacement and angular velocity of the rotating shaft 9 of the rotating object. The rotary transformer assembly 50 includes a rotary transformer stator 10 and a rotary transformer rotor 11 sleeved outside the rotary transformer stator 10. The rotary transformer stator 10 is fixedly connected to the rotating shaft 9. The rotary transformer rotor 11 is fixed to the housing of the motor device. The rotary transformer assembly 50 is connected to the external circuit through the connector 29.

[0049] Typically, the brushes of the brush assembly 1 generate a high voltage differential when energized. This high voltage differential can interfere with the measurement signal of the resolver assembly. In this embodiment, the brush assembly 1 and the resolver assembly 50 are disposed at opposite ends of the rotating shaft 9. This creates a large distance between the brush assembly 1 and the resolver assembly 50, with components such as the stator assembly positioned between them. This arrangement prevents the high voltage differential of the brush assembly 1 from adversely affecting the measurement accuracy of the resolver assembly 50.

[0050] In this embodiment, to facilitate the connection of the rotating shaft 9 with other components, the rotating shaft 9 is a hollow stepped shaft. At the first end 91, the first step of the rotating shaft 9 is used to accommodate the brush assembly 1. The second step of the rotating shaft 9 is used to accommodate the first bearing 2. At the second end 92, the second end 92 of the rotating shaft 9 has teeth. The rotating shaft 9 is transmission-connected to the first transmission gear shaft 15 of the reduction mechanism via the teeth. The second end 92 also has a third step, a fourth step, and a fifth step. The third step is used to accommodate the rotating transformer stator 10. The fourth step is used to accommodate the second bearing 12. The second bearing 12 is positioned by a first retaining spring 13. The fifth step is used to accommodate the third bearing 14. Thus, from the first end 91 to the second end 92, the brush assembly 1, the first bearing 2, the rotating transformer stator 10, the second bearing 12, and the third bearing 14 are sequentially arranged on the rotating shaft 9.

[0051] In one embodiment, the stator body includes a first winding 5 and a stator body 6, the stator body 6 is connected to the first winding 5, and the stator body 6 is provided with a plurality of heat dissipation channels 61, and the plurality of heat dissipation channels 61 are arranged along the circumference of the stator body 6, and the density of the heat dissipation channels 61 located at the upper part of the stator body 6 is greater than the density of the heat dissipation channels 61 located at the lower part of the stator body 6.

[0052] In this embodiment, the first winding 5 includes a coil wound by a metal wire. The metal wire can be, but is not limited to, copper wire, aluminum wire, gold wire, silver wire, etc. The first winding 5 can include one coil or multiple coils. The first winding 5 is used to form a magnetic field. The first winding 5 can be one or more. The stator body 6 is used to fix the first winding 5. The stator body 6 can gather the magnetic field. For example, the material of the stator body 6 is low carbon steel. The stator body 6 is an integrated structure or the stator body 6 includes multiple metal sheets stacked together.

[0053] As shown in Figure 3, the two first windings 5 ​​are connected together by a plurality of connecting teeth 51 arranged circumferentially. The plurality of connecting teeth 51 are located between the two first windings 5. Adjacent connecting teeth 51 are spaced apart. As shown in Figures 1 and 2, the stator body 6 is provided with connecting grooves for accommodating the connecting teeth 51. The connecting teeth 51 are embedded in the connecting grooves, for example, an interference fit is formed between the connecting teeth 51 and the connecting grooves to fix the stator body 6 and the first winding 5. For example, the first winding 5 is a three-phase winding. The three wire ends of the three-phase winding are respectively connected to the control circuit of the motor device.

[0054] The stator body 6 is surrounded by a storage space for accommodating the rotor of the motor. The stator body 6 is provided with a plurality of heat dissipation channels 61 for passing a heat exchange medium. The heat exchange medium is, for example, thermal oil, which includes thermal oil and silicone oil. The cross-section of the heat dissipation channel 61 can be, but is not limited to, circular, rectangular, triangular, elliptical, trapezoidal, etc. The plurality of heat dissipation channels 61 have the same shape and size; or the plurality of heat dissipation channels 61 have the same cross-sectional area. The thermal oil enters from one end of the heat dissipation channel 61 and flows out from the other end of the heat dissipation channel 61. As shown in FIG5 , the plurality of heat dissipation channels 61 are arranged along the circumference of the stator body 6. Under the influence of gravity, the thermal oil flows from the upper part of the stator body 6 to the lower part of the stator body 6, which results in more thermal oil in the lower part of the stator body 6 than in the upper part of the stator body 6, making it difficult for the thermal oil to carry away the heat in the upper part of the stator body 6.

[0055] In this embodiment, the density of the heat dissipation channels 61 located in the upper portion of the stator body 6 is greater than that of the heat dissipation channels 61 located in the lower portion of the stator body 6. A greater density of the heat dissipation channels 61 allows for a greater amount of thermal oil to be accommodated. This effectively increases the amount of thermal oil in the upper portion of the stator body 6 compared to the lower portion, allowing more thermal oil to absorb heat from the upper portion of the stator body 6, thereby effectively improving the heat dissipation effect in the upper portion of the stator body 6. This results in more uniform heat dissipation from the stator body 6.

[0056] Furthermore, the greater the density of the heat dissipation channel 61, the smaller the flow resistance of the thermal oil; conversely, the smaller the density of the heat dissipation channel 61, the greater the flow resistance of the thermal oil. This arrangement in the embodiment of the present application makes the flow resistance of the thermal oil in the lower portion of the stator body 6 greater than the flow resistance of the thermal oil in the upper portion of the stator body 6, thereby increasing the resistance of the thermal oil flowing to the lower portion of the stator body 6. In this way, more heat in the upper portion of the stator body 6 can be absorbed by the thermal oil, thereby improving the heat exchange efficiency of the stator body 6.

[0057] It should be noted that when the multiple heat dissipation channels 61 have the same shape, size, or cross-sectional area, the stator body 6 is easier to manufacture and the heat dissipation channels 61 are easier to design. However, the multiple heat dissipation channels 61 may have different shapes, sizes, and cross-sectional areas, as long as the heat dissipation effect on the upper portion of the stator body 6 is ensured to be good.

[0058] In one embodiment, the heat dissipation channel 61 extends along the axial direction of the stator body 6 .

[0059] 1 and 2 , the heat dissipation channel 61 is parallel to the circumference of the stator body 6. Thus, the heat dissipation channel 61 is larger when passing through the stator body 6, so that the heat transfer oil can absorb more heat from the stator body 6, further improving the heat dissipation effect of the stator body 6.

[0060] In addition, this arrangement makes the preparation of the heat dissipation channel 61 relatively easy.

[0061] Of course, in other examples, the heat dissipation channel 61 may also be in other shapes, such as an arc shape, a wavy line shape, etc.

[0062] In one embodiment, the stator body 6 is annular, a receiving space is formed in the middle of the stator body 6 , and the plurality of heat dissipation channels 61 are located on a side of the stator body 6 away from the receiving space.

[0063] As shown in Figures 1 and 2, the stator body 6 is a cylindrical, annular structure. The central portion of the stator body 6 forms a cylindrical housing. A heat dissipation channel 61 is located on the outer wall of the stator body 6. Thermal oil typically enters through the motor housing. This allows the oil to enter the heat dissipation channel 61 directly after passing through the housing, resulting in more timely heat dissipation and improved heat dissipation.

[0064] Of course, the stator body 6 may also be in a rectangular ring shape, an elliptical ring shape, etc. The location of the heat dissipation channel 61 is not limited thereto, and those skilled in the art may arrange it according to actual needs.

[0065] In one embodiment, the plurality of heat dissipation channels 61 are divided into a plurality of groups of heat dissipation channels 61 arranged along the axial direction of the stator body 6 , each group of heat dissipation channels 61 is arranged along the circumferential direction of the stator body 6 , and a gap 62 is formed between two adjacent groups of heat dissipation channels 61 , and the gap 62 is suitable for connecting to the inlet of the heat dissipation channel 61 .

[0066] As shown in Figures 1 and 2, two groups of heat dissipation channels 61 are arranged axially along the stator body 6. The density of the multiple heat dissipation channels 61 in both groups of heat dissipation channels 61 located in the upper portion of the stator body 6 is greater than the density in the lower portion of the stator body 6. A gap 62 is formed between the two groups of heat dissipation channels 61, and the inlets of the heat dissipation channels 61 communicate with the gap 62.

[0067] During use, the heat transfer oil enters the shell and reaches the gap 62. The heat transfer oil flows from the gap 62 to the heat dissipation channels 61 on both sides, and then flows out from the end of the heat dissipation channel 61 facing away from the gap 62. Next, the heat transfer oil flows downward along the stator assembly. The shell has a structure for recovering the heat transfer oil. The recovered heat transfer oil is dissipated by the heat exchange mechanism and the oil pump 27 and is recycled again. The longer the length of the heat transfer channel 61, the greater the flow resistance of the heat transfer oil; conversely, the shorter the length of the heat transfer channel 61, the smaller the flow resistance of the heat transfer oil. Compared with the axial heat transfer channel 61 that runs through the stator body 6, this setting can effectively reduce the flow resistance of the heat transfer oil, thereby making the heat dissipation effect of the stator body 6 better.

[0068] Of course, those skilled in the art can set the number of heat dissipation channels 61 and the length of the heat dissipation channels 61 according to actual needs.

[0069] In one embodiment, the stator assembly includes two first windings 5 ​​, and the two first windings 5 ​​are respectively located on two sides of the stator body 6 in the axial direction.

[0070] As shown in Figures 1 and 2, the two first windings 5 ​​are connected together via a plurality of connecting teeth 51. The stator body 6 is located between the two first windings 5. The two first windings 5 ​​provide a stronger magnetic field. For example, a guide groove is formed between the two first windings 5 ​​and the stator body 6 for the downward flow of thermal oil. The guide groove prevents the thermal oil from flowing to other locations within the stator assembly, making it easier to recover the thermal oil.

[0071] The two first windings 5 ​​can provide a stronger magnetic field, thereby enabling the motor device to have a greater driving force.

[0072] Of course, the number and arrangement of the first windings 5 ​​are not limited to the above embodiments, and those skilled in the art can make arrangements according to actual needs.

[0073] In one embodiment, the brush assembly 1 includes a mounting bracket 36 , a first brush 31 and a second brush 30 . The first brush 31 and the second brush 30 are elastically mounted on the mounting bracket 36 , and the mounting bracket 36 is sleeved outside the rotating shaft 9 .

[0074] As shown in Figures 1 and 2, the mounting frame 36 is triangular in shape. The mounting frame 36 is made of metal, plastic, etc. The mounting frame 36 is fixed to the housing of the motor device. The first brush 31 is mounted on the side of the mounting frame 36 away from the stator assembly and is embedded in the mounting frame 36. The second brush 30 is mounted on the side of the mounting frame 36 close to the stator assembly and is embedded in the mounting frame 36. The first brush 31 and the second brush 30 are separated by the mounting bracket, which prevents the electrical connections of the two brushes from interfering with each other. The first brush 31 and the second brush 30 can move elastically relative to the mounting frame 36 to support the slip ring on the rotating shaft 9, thereby ensuring the conduction of the second winding. The brush assembly 1 can be pre-installed and installed as a whole on the housing of the motor device when in use.

[0075] In this embodiment, the first brush 31 and the second brush 30 can be conventional carbon brushes in the prior art. Preferably, the first brush 31 and the second brush 30 are of the same model. This makes the structure of the brush assembly 1 simple and easy to replace.

[0076] In one embodiment, a first slip ring 8 and a second slip ring 32 are provided on the rotating shaft 9 . The first slip ring 8 contacts the first brush 31 , and the second slip ring 32 contacts the second brush 30 . The first slip ring 8 and the second slip ring 32 are arranged along the axial direction of the rotating shaft 9 .

[0077] As shown in Figures 2 and 4, a first slip ring 8 and a second slip ring 32 are embedded in the rotating shaft 9. The first slip ring 8 and the second slip ring 32 are respectively connected to the conductors of the second winding. The first slip ring 8 contacts the first brush 31, and the second slip ring 32 contacts the second brush 30. The first brush 31 and the second brush 30 are electrically connected to an external circuit, and electrical signals from the external circuit are transmitted to the second winding through the first brush 31, the second brush 30, the first slip ring 8, and the second slip ring 32.

[0078] In this embodiment, the first slip ring 8 and the second slip ring 32 are arranged along the axial direction of the rotating shaft 9. For example, the first slip ring 8 and the second slip ring 32 are arranged in parallel. This arrangement makes the electrical connection between the first slip ring 8 and the first brush 31, and the electrical connection between the second slip ring 32 and the second brush 30 more stable.

[0079] In some embodiments of the present application, a bearing pressure plate 3 is provided at the first end 91 of the rotating shaft 9. The bearing pressure plate 3 enables the first brush 31 and the second brush 30 to contact the first slip ring 8 and the second slip ring 32 respectively.

[0080] In one embodiment, the first brush 31 and the second brush 30 are slidably disposed on the mounting bracket 36 , and elastic elements are disposed between the mounting bracket 36 and the first brush 31 , and between the mounting bracket 36 and the second brush 30 .

[0081] As shown in Figures 1 and 2, a slide groove is provided on the mounting frame 36. The first brush 31 and the second brush 30 are slidably arranged in their respective slide grooves. An elastic element is provided in the slide groove. The elastic element can be, but is not limited to, a spring, a spring, an elastic rubber part, an elastic silicone part, etc. The elastic element is clamped between the mounting frame 36 and the first brush 31, and between the mounting frame 36 and the second brush 30, so that the first brush 31 and the second brush 30 abut against the first slip ring 8 and the second slip ring 32, respectively. This arrangement makes the sliding and electrical connection of the first brush 31 and the second brush 30 relative to the mounting frame 36 more stable.

[0082] Of course, those skilled in the art can set the number and specific installation positions of the first brushes 31 and the second brushes 30 according to actual needs, which is not limited here.

[0083] In one embodiment, the motor device further comprises a cable mounting seat 4 , wherein the cable mounting seat 4 is connected to the wire 37 of the first winding 5 .

[0084] As shown in Figures 1 to 3, cable mount 4 is fixed to the housing of the motor device. Cable mount 4 is used to electrically connect the first winding 5 to the control circuit. The wire 37 of the first winding 5 is connected to cable mount 4. The control circuit is connected to cable mount 4.

[0085] The cable mounting base 4 facilitates the electrical connection of the first winding 5 to the control circuit.

[0086] In one embodiment, the cable mounting seat 4 includes a fixing portion 34 and a receiving portion 33 , the receiving portion 33 is provided with a receiving groove 331 , the receiving groove 331 is suitable for receiving the wire 37 , the receiving portion 33 is connected to the fixing portion 34 , and the fixing portion 34 is located at the notch of the receiving groove 331 .

[0087] As shown in Figures 1 to 3, the fixing portion 34 is fixed to the housing of the motor device. The accommodating portion 33 is fixedly connected to the fixing portion 34. The connection method can be, but is not limited to, bolt connection, clamping, bonding, etc. The material of the fixing portion 34 and the accommodating portion 33 is an insulating material, such as ceramic, plastic, rubber, silicone, etc. The accommodating groove 331 is used to accommodate the wire 37 of the first winding 5. For example, the first winding 5 is a three-phase winding. The three-phase winding includes three wires 37. The accommodating portion 33 includes three accommodating grooves 331 arranged in parallel. The three wires 37 are respectively clamped in the accommodating grooves 331. The accommodating portion 33 can effectively isolate the three wires 37 to avoid interference between the three wires 37.

[0088] In this embodiment, the arrangement of the fixing portion 34 and the accommodating portion 33 facilitates the connection between the cable mounting seat 4 and the wire 37 , and the cable mounting seat 4 can protect the wire 37 .

[0089] Of course, the cable mounting seat 4 is not limited to the above embodiment, and those skilled in the art can configure it according to actual needs.

[0090] In one embodiment, the cable mounting seat 4 further includes a conductive bar 35, one end of which is provided with a connection hole, which is suitable for connecting the wire end of the wire 37 of the first winding 5, and the other end of the conductive bar 35 is provided with a first through hole 351, and the fixing portion 34 is provided with a threaded hole 343 opposite to the first through hole 351.

[0091] As shown in Figure 3, the conductive bar 35 is made of metal, such as copper, aluminum, nickel, stainless steel, etc. The connection holes of the conductive bar 35 are used to accommodate the wire ends of the wires 37. For example, the wire ends are crimped into the corresponding connection holes by means of crimping. The conductive bar 35 is used to be electrically connected to the control circuit. For example, the wires of the control circuit are provided with wiring terminals. The wiring terminals have wiring holes. The wiring holes are opposite to the first through holes 351. Bolts pass through the wiring holes, the first through holes 351 and are threadedly connected with the threaded holes 343 of the fixing part 34, so that the conductive bar 35 is in close contact with the wiring terminals, thereby forming an electrical connection. In this embodiment, the arrangement of the threaded holes 343 of the fixing part 34 and the conductive bar 35 facilitates the electrical connection between the control circuit and the first winding 5.

[0092] Of course, the structure of the cable mounting seat 4 is not limited thereto, and those skilled in the art can configure it according to actual needs.

[0093] In one embodiment, the fixing portion 34 has a bottom and a side, the receiving portion 33 is located at the bottom, and the threaded hole 343 is located at the side.

[0094] As shown in Figures 2 and 3, the bottom of the fixing portion 34 is close to the rotor assembly. The side wall of the fixing portion 34 faces away from the stator assembly, and the accommodating portion 33 is located at the bottom of the fixing portion 34. The fixing portion 34 closes the notch of the accommodating slot 331. This arrangement enables the fixing portion 34 to protect the wire 37. A portion of the conductive bar 35 is located at the bottom of the fixing portion 34, for example, embedded in the accommodating slot 331; the other portion is located on the side of the fixing portion 34, so that the conductive bar 35 forms an L-shaped structure. In this way, on the one hand, the overall length of the conductive bar 35 can be reduced, saving space; on the other hand, the conductive bar 35 is made of metal material, and the conductive bar 35 arranged at the bottom and side of the fixing portion 34 can protect the fixing portion 34.

[0095] Of course, the relative positions of the fixing portion 34 and the accommodating portion 33 are not limited to the above embodiment, and those skilled in the art can make arrangements according to actual needs.

[0096] In one embodiment, a side portion of the fixing portion 34 is provided with a recessed groove 342 , the threaded hole 343 is provided in the recessed groove 342 , and one end of the conductive bar 35 is embedded in the recessed groove 342 .

[0097] As shown in Figure 3, a recessed groove 342 is provided on the side of the fixing portion 34. The shape of the recessed groove 342 matches the shape of one end of the conductive bar 35. During installation, the recessed groove 342 can accommodate one end of the conductive bar 35 to provide a positioning function. A threaded hole 343 is provided at the bottom of the recessed groove 342. In this way, when one end of the conductive bar 35 is embedded in the recessed groove 342, the first through hole 351 of the conductive bar 35 can be opposite the threaded hole 343. The recessed groove 342 can effectively position the conductive bar 35, thereby facilitating the alignment of the first through hole 351 with the threaded hole 343.

[0098] In one embodiment, the fixing portion 34 is provided with a first lug 341 , and the accommodating portion 33 is provided with a second lug 332 , and the first lug 341 is connected to the second lug 332 .

[0099] As shown in Figures 1 and 3, a lug is a structure that protrudes from the component in which it is located. For example, the first lug 341 and the second lug 332 are provided with through holes. The first lug 341 and the second lug 332 are connected together by bolts. The provision of the first lug 341 and the second lug 332 facilitates the connection between the fixing portion 34 and the receiving portion 33. For example, the first lug 341 is provided with a groove or a step structure for positioning the second lug 332. During connection, the second lug 332 is positioned on the groove or step structure. This facilitates the positioning of the first lug 341 and the second lug 332.

[0100] Of course, the connection method between the fixing portion 34 and the accommodating portion 33 is not limited to the above embodiment, and those skilled in the art can make settings according to actual needs.

[0101] In one embodiment, the motor device 1000 further includes a speed reduction mechanism 40 and a heat exchange mechanism 28 . The speed reduction mechanism 40 is connected to the rotating shaft 9 , and the heat exchange mechanism 28 is connected to the speed reduction mechanism 40 .

[0102] As shown in Figures 1 and 2, the reduction mechanism 40 is located at the second end 92 of the rotating shaft 9. The motor outputs power through the reduction mechanism. The heat exchange mechanism 28 is located below the reduction mechanism. The heat exchange mechanism 28 is used to dissipate heat from the reduction mechanism. The reduction mechanism 40 includes a first transmission gear shaft 15, a second transmission gear shaft 19, and a reduction gear set 41. The first transmission gear shaft 15 is provided with teeth. The first transmission gear shaft 15 and the second transmission gear shaft 19 are arranged parallel to each other. The reduction gear set 41 is sleeved on the second transmission gear shaft 19 and meshes with the teeth of the first transmission gear shaft 15. The reduction gear set 41 can be assembled using a commonly used method in the art. A fourth bearing 16 is provided at the end of the first transmission gear shaft 15 facing away from the rotating shaft 9. The fourth bearing 16 is positioned by a second retaining spring 17. The fourth bearing 16 is connected to the housing of the motor assembly. The fourth bearing 16 ensures smoother rotation of the first transmission gear shaft 15.

[0103] In one embodiment, the heat exchange mechanism 28 includes a plurality of stacked metal sheets, with a heat conduction channel formed between two adjacent metal sheets.

[0104] For example, heat exchange mechanism 28 is a plate-type heat exchanger. The metal sheets are corrugated. The metal sheets are made of copper, aluminum, stainless steel, cast iron, or other materials. Adjacent metal sheets form heat conduction channels with flat rectangular cross-sections. A heat transfer medium flows within the heat conduction channels, removing heat from heat exchange mechanism 28. Heat exchange mechanism 28 effectively improves the heat dissipation efficiency of the reduction gear mechanism.

[0105] Referring to FIG6 , according to another embodiment of the present application, a vehicle 2000 is provided. The vehicle 2000 includes the motor device 1000 described above. The vehicle has a good heat dissipation effect.

[0106] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0107] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A motor device (1000), wherein: include: A stator assembly and a rotor assembly, wherein a receiving space is formed inside the stator assembly, the rotor assembly comprises a rotor body (7) and a rotating shaft (9), the rotating shaft (9) is connected to the rotor body (7), the rotor body (7) is located in the receiving space of the stator assembly, the rotating shaft (9) comprises a first end (91) and a second end (92) protruding from the axial ends of the rotor body (7), a brush assembly (1) is provided at the first end (91), and a rotary transformer assembly (50) is provided at the second end (92).

2. The electric machine device (1000) according to claim 1, wherein The stator assembly comprises: a first winding (5); and A stator body (6), the stator body (6) being connected to the first winding (5), the stator body (6) being provided with a plurality of heat dissipation channels (61), the plurality of heat dissipation channels (61) being arranged along the circumference of the stator body (6), the density of the heat dissipation channels (61) located at the upper portion of the stator body (6) being greater than the density of the heat dissipation channels (61) located at the lower portion of the stator body (6).

3. The electric machine device (1000) according to claim 2, wherein: The heat dissipation channel (61) extends along the axial direction of the stator body (6).

4. The electric machine device (1000) according to claim 2, wherein: The stator body (6) is annular, a receiving space is formed in the middle of the stator body (6), and a plurality of heat dissipation channels (61) are located on a side of the stator body (6) away from the receiving space.

5. The electric machine device (1000) according to claim 2, wherein: The plurality of heat dissipation channels (61) are divided into a plurality of groups of heat dissipation channels (61) arranged along the axial direction of the stator body (6), each group of heat dissipation channels (61) is arranged along the circumferential direction of the stator body (6), and a gap (62) is formed between two adjacent groups of heat dissipation channels (61), and the gap (62) is suitable for connecting to the inlet of the heat dissipation channel (61).

6. The electric machine device (1000) according to claim 2, wherein: It comprises two first windings (5), and the two first windings (5) are respectively located on both sides of the axial direction of the stator body (6).

7. The electric machine device (1000) according to claim 1, wherein The brush assembly (1) comprises a mounting frame (36), a first brush (31) and a second brush (30); the first brush (31) and the second brush (30) are elastically mounted on the mounting frame (36); and the mounting frame (36) is sleeved outside the rotating shaft (9).

8. The electric machine device (1000) according to claim 7, wherein: A first slip ring (8) and a second slip ring (32) are provided on the rotating shaft (9); the first slip ring (8) contacts the first brush (31); the second slip ring (32) contacts the second brush (30); and the first slip ring (8) and the second slip ring (32) are arranged along the axial direction of the rotating shaft (9).

9. The electric machine device (1000) according to claim 7, wherein: The first brush (31) and the second brush (30) are slidably arranged on the mounting frame (36), and elastic elements are arranged between the mounting frame (36) and the first brush (31) and between the mounting frame (36) and the second brush (30).

10. The electric machine device (1000) according to any one of claims 7 to 9, wherein: The first brush (31) and the second brush (30) are of the same model.

11. The electric machine device (1000) according to claim 2, wherein: It also includes a cable mounting seat (4), and the cable mounting seat (4) is connected to the wire of the first winding (5).

12. The electric machine device (1000) according to claim 11, wherein The cable mounting seat (4) comprises a fixing portion (34) and an accommodating portion (33); the accommodating portion (33) is provided with an accommodating groove (331); the accommodating groove (331) is suitable for accommodating the wire; the accommodating portion (33) is connected to the fixing portion (34); and the fixing portion (34) is located at a notch of the accommodating groove (331).

13. The electric machine device (1000) according to claim 12, wherein: The cable mounting seat (4) further comprises a conductive row (35), one end of the conductive row (35) being provided with a connection hole, the connection hole being suitable for connecting the wire end of the wire of the first winding (5), the other end of the conductive row (35) being provided with a first through hole (351), and the fixing portion (34) being provided with a threaded hole (343) opposite to the first through hole (351).

14. The electric machine device (1000) according to claim 13, wherein: The fixing portion (34) has a bottom and a side portion, the accommodating portion (33) is located at the bottom portion, and the threaded hole (343) is located at the side portion.

15. The electric machine device (1000) according to claim 14, wherein: A sinking groove (342) is provided on the side of the fixing portion (34), the threaded hole (343) is provided in the sinking groove (342), and one end of the conductive bar (35) is embedded in the sinking groove (342).

16. The electric machine device (1000) according to any one of claims 12 to 15, wherein: The fixing portion (34) is provided with a first lug (341), and the accommodating portion (33) is provided with a second lug (332), wherein the first lug (341) is connected to the second lug (332).

17. The electric machine device (1000) according to claim 1, wherein It also includes a speed reducing mechanism and a heat exchanging mechanism, wherein the speed reducing mechanism is connected to the rotating shaft (9), and the heat exchanging mechanism is connected to the speed reducing mechanism.

18. The electric machine device (1000) according to claim 17, wherein: The heat exchange mechanism includes a plurality of stacked metal sheets, with a heat conduction channel formed between two adjacent metal sheets.

19. A vehicle (2000) wherein: The motor device (1000) comprises the motor device (1000) according to any one of claims 1 to 18.

Images