Intelligent integrated permanent magnet synchronous motor

Abstract

This invention relates to an intelligent integrated permanent magnet synchronous motor, which includes a motor body, an electronic control unit, and a display screen unit. The motor body includes a motor housing, a motor shaft, a motor stator, and a motor rotor. Connecting bearings are respectively provided in the two side walls of the motor housing. The connecting bearing includes an outer bearing ring, an inner bearing ring, and several rollers. The inner bearing ring is sleeved on the motor shaft. The inner bearing ring includes a bearing ring sleeve tube and a fan sleeve tube. The fan sleeve tube is fixedly connected to the inner end of the bearing ring sleeve tube and is located in the motor housing. The fan sleeve tube, the bearing ring sleeve tube, and the motor shaft have the same central axis.

Description

Technical Field

[0001] This invention relates to a permanent magnet synchronous motor, and more particularly to an integrated permanent magnet synchronous motor with a built-in cooling fan connected to a connecting bearing and a cooling air duct inside the motor. Background Technology

[0002] As is well known, a permanent magnet synchronous motor (PMSM) is a synchronous motor that uses permanent magnets to generate a magnetic field. The rotor speed is synchronized with the current frequency of the stator windings. A PMSM generally consists of a stator, rotor, and end caps. The stator is basically the same as that of a conventional induction motor, employing a laminated structure to reduce iron losses during operation. The rotor can be solid or made of laminated laminations. The armature windings can use concentrated full-pitch windings, distributed short-pitch windings, or unconventional windings. The working principle of a PMSM is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor. The rotor is equipped with pre-magnetized permanent magnets, which generate a strong magnetic field when rotating, thus providing greater output torque. The motor's control system precisely regulates the current to ensure that the rotor rotates synchronously with the rotating magnetic field, maintaining a stable operating state. Currently, the PMSM is a widely used type of motor, offering advantages such as high efficiency, good dynamic response performance, and low noise. It is widely used in electric vehicles, robotics, and other fields requiring high efficiency, high dynamic performance, and low noise. However, the high-power integrated permanent magnet synchronous motors that have emerged so far generally suffer from poor ventilation and heat dissipation due to their structural design limitations. Summary of the Invention

[0003] The technical solution adopted in this invention is: an intelligent integrated permanent magnet synchronous motor, which includes a motor body, an electronic control unit and a display screen unit, wherein the electronic control unit is disposed above the motor body and the display screen unit is disposed above the electronic control unit.

[0004] The electronic control unit includes an electronic control housing and an electronic control component, the electronic control component being disposed within the electronic control housing. The display screen unit includes a display screen housing, a display screen body, and a display motherboard, the display motherboard being disposed on the back of the display screen body. The display screen body and the display motherboard are disposed within the display screen housing.

[0005] The motor body includes a motor housing, a motor shaft, a motor stator, and a motor rotor. The motor rotor is sleeved on the motor shaft, the motor stator is arranged around the motor rotor, and the motor shaft, the motor stator, and the motor rotor are arranged in the motor housing.

[0006] Connecting bearings are respectively installed in the two side walls of the motor housing. The two ends of the motor shaft are respectively inserted into the two connecting bearings. The connecting bearing includes an outer bearing ring, an inner bearing ring, and several rollers. The rollers are rolled between the outer bearing ring and the inner bearing ring. The outer bearing ring is fixedly installed in the side wall of the motor housing. The inner bearing ring is sleeved on the motor shaft. The inner bearing ring includes a bearing ring sleeve and a fan sleeve. The fan sleeve is fixedly connected to the inner end of the bearing ring sleeve and is located in the motor housing. The fan sleeve, the bearing ring sleeve, and the motor shaft have the same central axis.

[0007] A pad sleeve is fitted on the fan sleeve. The pad sleeve includes a sleeve and a protective disc. The protective disc is fixedly connected to the end of the sleeve and is located between the sleeve and the outer bearing ring. The built-in cooling fan is fitted on the sleeve of the pad sleeve. The built-in cooling fan, the pad sleeve, the inner bearing ring, and the motor shaft rotate coaxially.

[0008] The beneficial effects of the present invention are as follows: As described above, when the motor shaft of the present invention rotates, the built-in cooling fan is driven to rotate coaxially through the inner bearing ring. The built-in cooling fan is directly connected to the inner bearing ring for rotation. Since the connecting bearing is located in the side wall of the motor housing, the position of the inner bearing ring is stable and the rotation is smooth. The present invention can improve the rotational smoothness of the built-in cooling fan by directly connecting the built-in cooling fan to the inner bearing ring for rotation, and at the same time can avoid the occurrence of unstable rotation of the shaft caused by the fan rotating due to the fan being mounted on the shaft. Attached Figure Description

[0009] Figure 1 This is a perspective view of the present invention.

[0010] Figure 2 This is the front view of the present invention.

[0011] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0012] Figure 4 This is an exploded view of the present invention.

[0013] Figure 5 This is a schematic diagram showing the position of the bearing connected in this invention.

[0014] Figure 6 This is a partially enlarged view of the connecting bearing of the present invention.

[0015] Figure 7 This is an exploded view of the connecting bearing of the present invention.

[0016] Figure 8This is a schematic diagram of the counterweight plate of the present invention.

[0017] Figure 9 This is a schematic diagram of the heat dissipation airflow of the present invention. Detailed Implementation

[0018] like Figures 1 to 9 As shown, an intelligent integrated permanent magnet synchronous motor includes a motor body 10, an electronic control unit 20, and a display screen unit 30. The electronic control unit 20 is disposed above the motor body 10, and the display screen unit 30 is disposed above the electronic control unit 20. The electronic control unit 20 includes an electronic control housing 21 and an electronic control part 22, which is disposed within the electronic control housing 21. The display screen unit 30 includes a display screen housing 31, a display screen body 32, and a display motherboard 33, which is disposed on the back of the display screen body 32. The display screen body 32 and the display motherboard 33 are disposed within the display screen housing 31.

[0019] The motor body 10 includes a motor housing 11, a motor shaft 12, a motor stator 13, and a motor rotor 14. The motor rotor 14 is sleeved on the motor shaft 12, and the motor stator 13 is arranged around the motor rotor 14. The motor shaft 12, the motor stator 13, and the motor rotor 14 are arranged in the motor housing 11. Connecting bearings 100 are respectively arranged in the two side walls 110 of the motor housing 11, and the two ends of the motor shaft 12 are respectively passed through the two connecting bearings 100.

[0020] The connecting bearing 100 includes an outer bearing ring 120, an inner bearing ring 130, and several rollers 140. The rollers 140 are rolled between the outer bearing ring 120 and the inner bearing ring 130. The outer bearing ring 120 is fixedly disposed in the side wall 110 of the motor housing 11. The inner bearing ring 130 is sleeved on the motor shaft 12. The inner bearing ring 130 includes a bearing ring sleeve tube 131 and a fan sleeve tube 132. The fan sleeve tube 132 is fixedly connected to the inner end of the bearing ring sleeve tube 131 and is located in the motor housing 11. The fan sleeve tube 132, the bearing ring sleeve tube 131, and the motor shaft 12 have the same central axis 133.

[0021] A pad sleeve 150 is fitted onto the fan sleeve 132. The pad sleeve 150 includes a sleeve 151 and a protective disc 152. The protective disc 152 is fixedly connected to the end of the sleeve 151 and is located between the sleeve 151 and the outer bearing ring 120.

[0022] The built-in cooling fan 200 is sleeved on the sleeve 151 of the pad sleeve 150, and the built-in cooling fan 200, the pad sleeve 150, the inner bearing ring 130 and the motor shaft 12 rotate coaxially.

[0023] As described above, when the motor shaft 12 of the present invention rotates, it drives the built-in cooling fan 200 to rotate coaxially through the inner bearing ring 130. The built-in cooling fan 200 is directly connected to the inner bearing ring 130 for rotation. Since the connecting bearing 100 is located in the side wall 110 of the motor housing 11, the position of the inner bearing ring 130 is stable and the rotation is smooth. The present invention can improve the rotational smoothness of the built-in cooling fan 200 by directly connecting it to the inner bearing ring 130 for rotation, and at the same time can avoid the occurrence of unstable rotation of the shaft caused by the fan being mounted on the shaft.

[0024] In specific implementation, the built-in cooling fan 200 includes a fan connecting plate 210 and a fan blade turntable 220, wherein the fan blade turntable 220 is arranged around the fan connecting plate 210, and a number of blades 221 are provided on the fan blade turntable 220.

[0025] The fan connecting plate 210 includes a sleeve cavity 211 and an auxiliary rib plate 212. The sleeve 151 of the pad tube 150 is inserted into the sleeve cavity 211. One side of the auxiliary rib plate 212 is fixedly connected to the fan connecting plate 210, and the other side of the auxiliary rib plate 212 is abutted on the motor shaft 12. The built-in cooling fan 200 can be fixedly sleeved on the pad tube 150 through the sleeve cavity 211 and the auxiliary rib plate 212.

[0026] like Figure 8 As shown, in a specific implementation, the built-in cooling fan 200 also includes a counterweight plate 230. The counterweight plate 230 is disposed on the other side of the built-in cooling fan 200, corresponding to the protective plate 152 of the pad sleeve 150. The counterweight plate 230 is connected to the fan connecting plate 210. The counterweight plate 230 includes a connecting part 231 and a counterweight part 232. The connecting part 231 is arranged around the counterweight part 232. A through hole 233 is opened in the center of the counterweight part 232. The motor shaft 12 passes through the center of the through hole 233. The thickness of the counterweight part 232 increases from the periphery of the counterweight part 232 towards the through hole 233. The design of the counterweight plate 230 can concentrate the center of gravity of the built-in cooling fan 200 at its central axis, thereby improving the rotational stability of the built-in cooling fan 200.

[0027] like Figure 3 , 9As shown, in a specific implementation, the motor housing 11 has a motor cavity 510.

[0028] The motor housing 11 has a first connecting port 511 at the top, the electrical control housing 21 has an electrical control housing cavity 520, the electrical control housing 21 has a first air vent 521 on its side wall, the electrical control housing 21 has a second connecting port 522 at its bottom, the electrical control housing 21 has a third connecting port 523 at its top, the display screen housing 31 has a display screen housing cavity 530, the display screen housing 31 has a second air vent 531 on its side wall, and the display screen housing 31 has a fourth connecting port 532 at its bottom.

[0029] The motor cavity 510 and the electrical control housing cavity 520 are interconnected through the first connecting port 511 and the second connecting port 522. The first air vent 521 is connected to the electrical control housing cavity 520. The electrical control housing cavity 520 and the display screen housing cavity 530 are interconnected through the third connecting port 523 and the fourth connecting port 532. The second air vent 531 is connected to the display screen housing cavity 530.

[0030] A heat dissipation duct 600 is formed by connecting the second air vent 531, the inner cavity of the display screen housing 530, the fourth connecting port 532, the first air vent 521, the third connecting port 523, the inner cavity of the electrical control housing 520, the second connecting port 522, the first connecting port 511, and the inner cavity of the motor.

[0031] The built-in cooling fan 200, the motor shaft 12, the motor stator 13 and the motor rotor 14 are located in the motor cavity 510, the electronic control unit 20's electronic control part 22 is located in the electronic control housing cavity 520, and the display main board 33 of the display unit 30 is located in the display housing cavity 530.

[0032] The built-in cooling fan 200, the motor shaft 12, the motor stator 13, the motor rotor 14, the electronic control unit 22, and the display motherboard 33 are located in the cooling duct 600. The built-in cooling fan 200 rotates coaxially with the motor shaft 12, causing the airflow 700 to circulate between the cooling duct 600 and the external space 800, so as to achieve the effect of simultaneous ventilation and heat dissipation of various components in the motor through the built-in cooling fan 200 and the cooling duct 600 of the present invention.

[0033] In practice, dustproof nets are installed in the first connecting port 511, the first air vent 521, the second connecting port 522, the third connecting port 523, the second air vent 531, and the fourth connecting port 532.

[0034] like Figure 7As shown, in a specific implementation, the side wall 110 of the motor housing 11 is provided with an inner concave wall 111, and the connecting bearing 100 is disposed in the inner concave wall 111.

[0035] In practice, the stator 13 of the motor has a laminated stator structure. In practice, the rotor 14 of the motor is made of permanent magnet material. In practice, the rotor 14 of the motor is a multi-polarized permanent magnet rotor.

Claims

1. An intelligent integrated permanent magnet synchronous motor, comprising a motor body, an electronic control unit, and a display screen unit, wherein, The electronic control unit is located above the motor body, and the display screen unit is located above the electronic control unit. The electronic control unit includes an electronic control housing and an electronic control component, the electronic control component being disposed within the electronic control housing. The display screen unit includes a display screen housing, a display screen body, and a display motherboard, the display motherboard being disposed on the back of the display screen body. The display screen body and the display motherboard are disposed within the display screen housing. The motor body includes a motor housing, a motor shaft, a motor stator, and a motor rotor. The motor rotor is sleeved on the motor shaft, and the motor stator is disposed around the motor rotor. The motor shaft, motor stator, and motor rotor are housed within the motor housing. The characteristic feature is that: Connecting bearings are respectively installed in the two side walls of the motor housing. The two ends of the motor shaft are respectively inserted into two of these connecting bearings. Each connecting bearing includes an outer bearing ring, an inner bearing ring, and several rollers. The rollers are rotatably disposed between the outer and inner bearing rings. The outer bearing ring is fixedly disposed in the side wall of the motor housing. The inner bearing ring is sleeved on the motor shaft and includes a bearing ring tube and a fan tube. The fan tube is fixedly connected to the inner end of the bearing ring tube and is located within the motor housing. The fan tube, the bearing ring tube, and the motor shaft share the same central axis. A pad sleeve is fitted on the fan sleeve. The pad sleeve includes a sleeve and a protective disc. The protective disc is fixedly connected to the end of the sleeve and is located between the sleeve and the outer bearing ring. The built-in cooling fan is fitted on the sleeve of the pad sleeve. The built-in cooling fan, the pad sleeve, the inner bearing ring, and the motor shaft rotate coaxially.

2. The intelligent integrated permanent magnet synchronous motor as described in claim 1, characterized in that: The motor housing has an internal cavity, and a first connecting opening is provided at the top of the motor housing. The electrical control housing has an internal cavity, and a first air vent is provided on the side wall of the electrical control housing. A second connecting opening is provided at the bottom of the electrical control housing, and a third connecting opening is provided at the top of the electrical control housing. The display screen housing has an internal cavity, and a second air vent is provided on the side wall of the display screen housing. A fourth connecting opening is provided at the bottom of the display screen housing. The inner cavity of the motor and the inner cavity of the electronic control housing are interconnected through the first and second connecting ports. The first air vent is connected to the inner cavity of the electronic control housing. The inner cavity of the electronic control housing and the inner cavity of the display screen housing are interconnected through the third and fourth connecting ports. The second air vent is connected to the inner cavity of the display screen housing. A heat dissipation air duct is formed by the connection of the second air vent, the inner cavity of the display screen housing, the fourth connecting port, the first air vent, the third connecting port, the inner cavity of the electronic control housing, the second connecting port, the first connecting port, and the inner cavity of the motor. The built-in cooling fan, the motor shaft, the motor stator, and the motor rotor are located inside the motor cavity; the electronic control unit's electronic control section is located inside the electronic control housing cavity; and the display motherboard of the display unit is located inside the display housing cavity. The built-in cooling fan, the motor shaft, the motor stator, the motor rotor, the electronic control unit, and the display motherboard are located in the cooling duct. The built-in cooling fan rotates coaxially with the motor shaft, causing airflow to circulate between the cooling duct and the external space.

3. The intelligent integrated permanent magnet synchronous motor as described in claim 1 or 2, characterized in that: The built-in cooling fan includes a fan mounting plate and a fan blade disk, wherein the fan blade disk is arranged around the fan mounting plate and has several blades. The fan connecting plate includes a sleeve cavity and an auxiliary rib plate. The sleeve of the pad tube is inserted into the sleeve cavity. One side of the auxiliary rib plate is fixedly connected to the fan connecting plate, and the other side of the auxiliary rib plate is abutted on the motor shaft. The built-in cooling fan can be fixedly sleeved on the pad tube through the sleeve cavity and the auxiliary rib plate.

4. The intelligent integrated permanent magnet synchronous motor as described in claim 3, characterized in that: The built-in cooling fan also includes a counterweight plate, which is disposed on the other side of the built-in cooling fan, corresponding to the protective plate of the gasket sleeve. The counterweight plate is connected to the fan connecting plate. The counterweight plate includes a connecting part and a counterweight part. The connecting part is arranged around the counterweight part, and a through hole is opened in the center of the counterweight part. The motor shaft passes through the center of the through hole.

5. The intelligent integrated permanent magnet synchronous motor as described in claim 4, characterized in that: The thickness of the counterweight increases from the periphery of the counterweight towards the through hole.

6. The intelligent integrated permanent magnet synchronous motor as described in claim 2, characterized in that: Dustproof nets are installed in the first connecting port, the first air vent, the second connecting port, the third connecting port, the second air vent, and the fourth connecting port.

7. The intelligent integrated permanent magnet synchronous motor as described in claim 1, characterized in that: The motor housing has a recessed wall on its side wall, and the connecting bearing is disposed in the recessed wall.

8. The intelligent integrated permanent magnet synchronous motor as described in claim 1, characterized in that: The stator of this motor has a stator lamination structure.

9. The intelligent integrated permanent magnet synchronous motor as described in claim 1, characterized in that: The motor rotor is made of permanent magnet material.

10. The intelligent integrated permanent magnet synchronous motor as described in claim 1, characterized in that: The motor rotor is a multi-polarized permanent magnet rotor.

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