A driving motor for an electric vehicle

Abstract

The present invention relates to the field of motor technology, and specifically discloses a driving motor for an electric vehicle, including a motor body, an output shaft rotatably connected inside the motor body, a heat dissipation shield fixedly connected to the right side of the motor body by bolts, a heat dissipation fan blade fixedly connected to the side wall of the output shaft located inside the heat dissipation shield, a rotating shaft rotatably connected inside the heat dissipation shield, a magnetic coupling transmission connection between the rotating shaft and the output shaft, and a cleaning drive mechanism disposed inside the heat dissipation shield. The present invention drives the rotating shaft to rotate by a magnetic coupling, and then cooperates with a planetary gear mechanism to drive the cleaning drive mechanism to operate. The operating cleaning drive mechanism can clean the air inlet of the heat dissipation shield on the one hand, and provide power for the operation of the dredging mechanism on the other hand, thereby solving the problem that the air inlet of the shield in the motor heat dissipation device is easily blocked by dirt and other debris, which may cause the motor temperature to rise and affect the service life of the motor.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a driving motor for an electric vehicle. Background Art

[0002] With the rapid development of my country's economy and the significant improvement of people's living standards, the concepts of green travel and energy conservation and environmental protection are increasingly valued. In this context, electric tricycles have gradually become an important choice for public travel due to their low price, convenient operation and environmentally friendly characteristics.

[0003] Electric tricycles mainly rely on batteries as a power source and motors as a driving device. During the energy conversion process of the motor, energy loss is inevitable. This part of the lost energy is eventually converted into heat energy. In order to effectively dissipate heat, the motor design usually has a heat dissipation device at the end away from the output shaft to cool the motor casing.

[0004] However, in actual applications, especially in rural areas, electric tricycles often need to travel on muddy roads. Such road conditions can easily cause the air inlet of the protective cover in the motor cooling device to be blocked by dirt and other debris. Once the air inlet is blocked, the heat generated by the motor during long-term operation will not be effectively dissipated, resulting in an increase in motor temperature. Continuous high temperature environment will accelerate the aging of the internal components of the motor, thereby shortening the service life of the motor and affecting the overall performance and reliability of the electric tricycle. Summary of the invention

[0005] The object of the present invention is to provide a driving motor for an electric vehicle to solve the problem in the prior art that the air inlet of the protective cover in the motor heat dissipation device is easily blocked by dirt and other debris, which may cause the motor temperature to rise and affect the service life of the motor.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A driving motor of an electric vehicle comprises a motor body, wherein an output shaft is rotatably connected inside the motor body, a heat dissipation shield is fixedly connected to the right side of the motor body by bolts, a heat dissipation fan blade is fixedly connected to the side wall of the output shaft located inside the heat dissipation shield, a rotating shaft is rotatably connected inside the heat dissipation shield, the rotating shaft and the output shaft are transmission-connected by a magnetic coupler, a cleaning drive mechanism is arranged inside the heat dissipation shield, the cleaning drive mechanism is used for cleaning an air inlet of the heat dissipation shield, the cleaning drive mechanism is rotatably connected to the rotating shaft by a planetary gear mechanism, an anti-blocking mechanism is arranged inside the heat dissipation shield, the anti-blocking mechanism is used for clearing the air outlet formed by the motor body and the heat dissipation shield, and the cleaning drive mechanism provides driving force for the anti-blocking mechanism.

[0008] Preferably: the planetary gear mechanism includes a planetary carrier and an inner gear ring, a fixed block is fixedly connected to the inner wall on the right side of the heat dissipation shield, the left end of the fixed block is fixedly connected to the planetary carrier, the left end of the rotating shaft passes through the planetary carrier and is rotatably connected thereto, the left end of the planetary carrier is rotatably connected to the inner gear ring and the planetary gear, the inner gear ring and the planetary gear are meshed with each other, and a sun gear is fixedly connected to the side wall of the rotating shaft located on the left side of the planetary carrier, and the sun gear and the planetary gear are meshed with each other.

[0009] Preferably: the cleaning drive mechanism includes a connecting rod and a connecting support rod, the outer wall of the inner gear ring is fixedly connected to the connecting rod, the left end of the connecting rod is fixedly connected to the connecting support rod, the left end of the connecting support rod is fixedly connected to the cleaning rod, and the left end of the cleaning rod abuts against the right inner wall of the heat dissipation protective cover.

[0010] Preferably, the upper end of the connecting rod is fixedly connected to a driving plate, and the driving plate is arranged in a "V" shape.

[0011] Preferably: the dredging mechanism includes an annular frame and a dredging component, the annular frame is fixedly connected to the inside of the heat dissipation protective cover, the annular frame is located at the left end of the planetary gear, the dredging component is arranged inside the annular frame, and the dredging component cooperates with the driving plate.

[0012] Preferably, a sliding hole is provided on the left end surface of the annular frame, and the sliding holes are provided in multiple groups and are aligned in a straight line with the air outlet formed by the motor body and the heat dissipation protective cover.

[0013] Preferably: the dredging component includes a sliding rod and a limit block, each group of the sliding holes is slidably connected to a sliding rod, two ends of the sliding rod pass through both sides of the annular frame, the sliding rod side wall located on the left side of the annular frame is fixedly connected to the limit block, the right end of the limit block and the left end of the annular frame abut against each other, the left end of the sliding rod is fixedly connected to the dredging block, the right end of the sliding rod is fixedly connected to the top block, the sliding rod side wall located on the right side of the annular frame is sleeved with a return spring, the left end of the return spring is fixedly connected to the right end of the annular frame, the right end of the return spring is fixedly connected to the left end of the top block, and the right end of the top block cooperates with the left end of the driving plate.

[0014] Preferably: the magnetic coupler includes a driving rotor and a driven rotor, the driving rotor is fixedly connected to the side wall of the output shaft located on the left side of the heat dissipation fan blade, and the right end of the driving rotor is equidistantly fixedly connected to a first permanent magnet, and the first permanent magnet has opposite magnetic properties to the adjacent first permanent magnet.

[0015] Preferably, the left end of the rotating shaft is fixedly connected to a driven rotor, the left end of the driven rotor is equidistantly fixedly connected to a second permanent magnet, the second permanent magnet has opposite magnetic properties to the adjacent second permanent magnet, and the active rotor cooperates with the driven rotor.

[0016] Preferably, the left end of the active rotor and the side wall are both equidistantly fixedly connected with the first rotor cooling fins, and the right end of the driven rotor and the side wall are both fixedly connected with the second rotor cooling fins.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention realizes the transmission connection between the output shaft and the rotating shaft by setting a magnetic coupler, thereby eliminating the traditional step of docking and fixing the rotating shaft and the output shaft during the inspection and reinstallation of the heat dissipation shield, making the installation of the heat dissipation shield easier and improving the efficiency of workers' inspection and maintenance.

[0019] 2. The present invention realizes the interaction between the planetary gear mechanism, the connecting rod, the connecting support rod and the cleaning rod, so that the rotating shaft slows down the connecting rod when rotating, thereby driving the cleaning rod to perform a cleaning action, thereby cleaning the inside of the heat dissipation protective cover, and effectively avoiding the problem of foreign matter blocking the air inlet.

[0020] 3. The present invention realizes that the connecting rod drives the driving plate when moving through the coordinated work of the dredging component, the annular frame and the driving plate, and the driving plate then drives the dredging component to operate, effectively cleaning the air outlet formed by the motor body and the heat dissipation protective cover to prevent clogging by debris such as mud, thereby avoiding abnormal increase in motor temperature and extending the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall main structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the front cross-sectional structure of the heat dissipation protection cover of the present invention;

[0023] Figure 3 It is a schematic diagram of the explosion structure of the heat dissipation protective cover and the motor body of the present invention;

[0024] Figure 4 For the present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0025] Figure 5 It is a left-side structural schematic diagram of the planetary gear mechanism and the cleaning drive mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the heat dissipation protection cover of the present invention from a top view;

[0027] Figure 7 It is a schematic diagram of a partial cross-sectional structure of the annular frame of the present invention;

[0028] Figure 8 It is a schematic diagram of the overall left-side planar structure of the present invention.

[0029] In the figure: 1. motor body; 11. output shaft; 12. heat dissipation fan blades; 2. heat dissipation shield; 3. rotating shaft; 4. magnetic coupler; 41. active rotor; 42. first permanent magnet; 43. first rotor heat dissipation fins; 44. driven rotor; 45. second permanent magnet; 46. second rotor heat dissipation fins; 5. planetary gear mechanism; 51. fixing block; 52. planet carrier; 53. inner ring gear; 54. planetary gear; 55. sun gear; 6. cleaning drive mechanism; 61. connecting rod; 62. connecting support rod; 63. cleaning rod; 64. driving plate; 7. anti-blocking mechanism; 71. annular frame; 711. sliding hole; 72. dredging component; 721. sliding rod; 722. limit block; 723. dredging block; 724. top block; 725. reset spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Reference Figure 1-Figure 8 As shown, the present invention provides a driving motor for an electric vehicle, including a motor body 1, an output shaft 11 is rotatably connected inside the motor body 1, a heat dissipation shield 2 is fixedly connected to the right side of the motor body 1 by bolts, a heat dissipation fan blade 12 is fixedly connected to the side wall of the output shaft 11 inside the heat dissipation shield 2, a rotating shaft 3 is rotatably connected inside the heat dissipation shield 2, the rotating shaft 3 and the output shaft 11 are transmission-connected via a magnetic coupler 4, a cleaning drive mechanism 6 is arranged inside the heat dissipation shield 2, the cleaning drive mechanism 6 is used to clean the air inlet of the heat dissipation shield 2, and the cleaning drive mechanism 6 is rotatably connected to the rotating shaft 3 via a planetary gear mechanism 5, An anti-blocking mechanism 7 is arranged inside the heat dissipation protective cover 2, and the anti-blocking mechanism 7 is used to clear the air outlet formed by the motor body 1 and the heat dissipation protective cover 2, and the cleaning drive mechanism 6 provides driving force for the anti-blocking mechanism 7; the rotating shaft 3 is driven to rotate by the magnetic coupling 4, and then the cleaning drive mechanism 6 is driven to operate in conjunction with the planetary gear mechanism 5. The operating cleaning drive mechanism 6 can, on the one hand, clean the air inlet of the heat dissipation protective cover 2, and on the other hand, provide power for the work of the clearing mechanism, thereby solving the problem that the air inlet of the protective cover in the motor heat dissipation device is easily blocked by debris such as mud, which may cause the motor temperature to rise and affect the service life of the motor.

[0032] In a further embodiment, referring to Figure 2-Figure 5The planetary gear mechanism 5 includes a planet carrier 52 and an inner gear ring 53. A fixed block 51 is fixedly connected to the inner wall on the right side of the heat dissipation shield 2. The left end of the fixed block 51 is fixedly connected to the planet carrier 52. The left end of the rotating shaft 3 passes through the planet carrier 52 and is rotatably connected thereto. The left end of the planet carrier 52 is rotatably connected to the inner gear ring 53 and the planetary gear 54. The inner gear ring 53 and the planetary gear 54 are meshed with each other. A sun gear 55 is fixedly connected to the side wall of the rotating shaft 3 located on the left side of the planet carrier 52. The sun gear 55 and the planetary gear 54 are meshed with each other. The cleaning drive mechanism 6 includes a connecting rod 61 and a connecting support rod 62. The outer wall of the inner gear ring 53 is fixedly connected to the connecting rod 61. The left end of the connecting rod 61 is fixedly connected to the connecting support rod 62. The left end of the connecting support rod 62 is fixedly connected to the cleaning rod 63. The left end of the cleaning rod 63 abuts against the inner wall on the right side of the heat dissipation shield 2.

[0033] In this embodiment, the present invention starts the sun gear 55 through the rotation of the rotating shaft 3, and then drives the planetary gears 54 and the inner ring gear 53 in sequence. This series of transmission actions eventually causes the connecting rod 61 and the connecting support rod 62 to move, driving the cleaning rod 63 to clean; the coordinated operation of the sun gear 55, the planetary gears 54 and the inner ring gear 53 not only achieves the deceleration of the cleaning rod 63, but also ensures its stable movement, thereby effectively preventing the air inlet from being blocked by foreign objects.

[0034] In a further embodiment, referring to Figure 5-Figure 8 The upper end of the connecting rod 61 is fixedly connected to the driving plate 64, and the driving plate 64 is set in a "V" shape. The dredging mechanism includes an annular frame 71 and a dredging component 72. The heat dissipation shield 2 is fixedly connected to the annular frame 71. The annular frame 71 is located at the left end of the planetary gear 54. The dredging component 72 is arranged inside the annular frame 71. The dredging component 72 cooperates with the driving plate 64. The left end surface of the annular frame 71 is provided with a sliding hole 711. The sliding hole 711 is provided with multiple groups and is aligned with the air outlet formed by the motor body 1 and the heat dissipation shield 2. The dredging component 72 includes a sliding rod 721 and a limit block 722. Each group of sliding holes 711 has a sliding hole 711 inside. The cam 724 is a substantially parallelogram of the first and second end portions of the first and second cams, and the second and second cams are configured to move relative to each other. The cam 724 is a substantially parallelogram of the first and second end portions of the first and second cams, and the second and second cams are configured to move relative to each other.

[0035] In this embodiment, the driving plate 64 is driven by the movement of the connecting rod. Due to the synergistic effect between the driving plate 64 and the top block 724, the movement of the driving plate 64 can guide the top block 724 to move to the left, thereby compressing the reset spring 725. The movement of the top block 724 further drives the slide bar 721, and the movement of the slide bar 721 pushes the dredging block 723 to move toward the air outlet formed by the motor body 1 and the heat dissipation shield 2 to achieve the dredging function. When the cooperation between the driving plate 64 and the top block 724 ends, the reset spring 725 drives the slide bar 721 to retreat to the initial position by restoring its deformation, preparing for the next dredging operation; by adopting a "V"-shaped driving plate 64, the driving plate 64 can operate stably regardless of how the rotating shaft 3 rotates in the opposite direction.

[0036] In a further embodiment, referring to Figure 2-Figure 4 The magnetic coupling 4 includes a driving rotor 41 and a driven rotor 44. The driving rotor 41 is fixedly connected to the side wall of the output shaft 11 located on the left side of the heat dissipation fan blade 12. The right end of the driving rotor 41 is equidistantly fixedly connected to a first permanent magnet 42, and the first permanent magnet 42 has opposite magnetic properties to the adjacent first permanent magnet 42. The left end of the rotating shaft 3 is fixedly connected to the driven rotor 44, and the left end of the driven rotor 44 is equidistantly fixedly connected to a second permanent magnet 45, and the second permanent magnet 45 has opposite magnetic properties to the adjacent second permanent magnet 45. The driving rotor 41 and the driven rotor 44 cooperate with each other.

[0037] In this embodiment, when the active rotor 41 rotates with the output shaft 11, the first permanent magnet 42 thereon acts on the corresponding second permanent magnet 45 on the driven rotor 44 through the magnetic field, generating an attractive or repulsive force, thereby driving the driven rotor 44 to rotate; this design allows the two rotors to be free of direct contact, eliminating the traditional step of docking and fixing the rotating shaft 3 and the output shaft 11, making the installation of the heat dissipation shield 2 easier and improving the efficiency of workers' maintenance.

[0038] In a further embodiment, referring to Figure 4 The left end of the active rotor 41 and the side wall are fixedly connected with the first rotor cooling fins 43 at equal distances, and the right end of the driven rotor 44 and the side wall are fixedly connected with the second rotor cooling fins 46.

[0039] In this embodiment, by being equipped with the first rotor cooling fins 43 and the second rotor cooling fins 46, the magnetic coupler 4 can effectively disperse and carry away part of the heat during operation, thereby reducing the adverse effect of heat on the first permanent magnet 42 and the second permanent magnet 45, ensuring the stable operation and performance of the coupler.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A driving motor for an electric vehicle, comprising a motor body (1), characterized in that: An output shaft (11) is rotatably connected inside the motor body (1), a heat dissipation shield (2) is fixedly connected to the right side of the motor body (1) by bolts, a heat dissipation fan blade (12) is fixedly connected to the side wall of the output shaft (11) inside the heat dissipation shield (2), a rotating shaft (3) is rotatably connected inside the heat dissipation shield (2), the rotating shaft (3) and the output shaft (11) are transmission-connected via a magnetic coupler (4), a cleaning drive mechanism (6) is provided inside the heat dissipation shield (2), the cleaning drive mechanism (6) is used to clean the air inlet of the heat dissipation shield (2), the cleaning drive mechanism (6) and the rotating shaft (3) are rotatably connected via a planetary gear mechanism (5), an anti-blocking mechanism (7) is provided inside the heat dissipation shield (2), the anti-blocking mechanism (7) is used to clear the air outlet formed by the motor body (1) and the heat dissipation shield (2), and the cleaning drive mechanism (6) provides driving force for the anti-blocking mechanism (7); The planetary gear mechanism (5) comprises a planet carrier (52) and an inner gear ring (53); a fixing block (51) is fixedly connected to the inner wall on the right side of the heat dissipation shield (2); the left end of the fixing block (51) is fixedly connected to the planet carrier (52); the left end of the rotating shaft (3) passes through the planet carrier (52) and is rotatably connected thereto; the left end of the planet carrier (52) is rotatably connected to the inner gear ring (53) and a planet gear (54); the inner gear ring (53) and the planet gear (54) are meshed with each other; a sun gear (55) is fixedly connected to the side wall of the rotating shaft (3) located on the left side of the planet carrier (52); the sun gear (55) and the planet gear (54) are meshed with each other; The cleaning drive mechanism (6) comprises a connecting rod (61) and a connecting support rod (62); the outer wall of the inner gear ring (53) is fixedly connected to the connecting rod (61); the left end of the connecting rod (61) is fixedly connected to the connecting support rod (62); the left end of the connecting support rod (62) is fixedly connected to a cleaning rod (63); the left end of the cleaning rod (63) abuts against the right inner wall of the heat dissipation protective cover (2); The dredging mechanism comprises an annular frame (71) and a dredging component (72); the annular frame (71) is fixedly connected inside the heat dissipation protective cover (2); the annular frame (71) is located at the left end of the planetary gear (54); the dredging component (72) is arranged inside the annular frame (71); the dredging component (72) cooperates with the driving plate (64); The left end surface of the annular frame (71) is provided with a sliding hole (711), and the sliding holes (711) are provided in multiple groups and are aligned in a straight line with the air outlet formed by the motor body (1) and the heat dissipation protective cover (2); The dredging component (72) comprises a slide bar (721) and a limit block (722). The inside of each group of the slide holes (711) is slidably connected with a slide bar (721). The two ends of the slide bar (721) penetrate the two sides of the annular frame (71). The side wall of the slide bar (721) located on the left side of the annular frame (71) is fixedly connected with the limit block (722). The right end of the limit block (722) abuts against the left end of the annular frame (71). The left end of the slide bar (721) is fixedly connected to the left end of the annular frame (71). A dredging block (723) is fixedly connected to the slide bar (721), a top block (724) is fixedly connected to the right end of the slide bar (721), a return spring (725) is sleeved on the side wall of the slide bar (721) located on the right side of the annular frame (71), the left end of the return spring (725) is fixedly connected to the right end of the annular frame (71), the right end of the return spring (725) is fixedly connected to the left end of the top block (724), and the right end of the top block (724) cooperates with the left end of the driving plate (64).

2. The driving motor of an electric vehicle according to claim 1, characterized in that: The upper end of the connecting rod (61) is fixedly connected to a driving plate (64), and the driving plate (64) is arranged in a "V" shape.

3. The driving motor of an electric vehicle according to claim 1, characterized in that: The magnetic coupler (4) comprises a driving rotor (41) and a driven rotor (44); the driving rotor (41) is fixedly connected to the side wall of the output shaft (11) located on the left side of the heat dissipation fan blade (12); the right end of the driving rotor (41) is fixedly connected to a first permanent magnet (42) at an equal distance; the first permanent magnet (42) has opposite magnetic properties to an adjacent first permanent magnet (42).

4. The driving motor of an electric vehicle according to claim 3, characterized in that: The left end of the rotating shaft (3) is fixedly connected to a driven rotor (44), and the left end of the driven rotor (44) is equidistantly fixedly connected to a second permanent magnet (45), the second permanent magnet (45) and the adjacent second permanent magnet (45) have opposite magnetic properties, and the active rotor (41) and the driven rotor (44) cooperate with each other.

5. The driving motor of an electric vehicle according to claim 3, characterized in that: The left end of the active rotor (41) and the side wall are both equidistantly fixedly connected with first rotor cooling fins (43), and the right end of the driven rotor (44) and the side wall are both fixedly connected with second rotor cooling fins (46).

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