A flat heat dissipation axial flux motor and humanoid robot joint module

Abstract

The present invention provides a flat heat dissipation axial flux motor, including a heat dissipation component, the heat dissipation component includes a rotor disk, a rotor shaft, an inner core, a first flow channel, a second flow channel, a piston, an oil storage box, a heat sink, a fan blade, a guide tube, a sealing plate, a mounting disk and a magnetic block; the rotor shaft is fixedly connected to the inside of the rotor disk. The present invention drives the mounting disk to rotate through the rotor shaft, and the cooling oil flows into the first flow channel on the right side, and then flows through the right guide groove, the left guide groove, the left first flow channel, the second flow channel and the guide tube in sequence, and finally circulates to the oil storage box. As the rotor disk rotates continuously, the cooling oil circulates, and then the heat dissipation of the rotor can be realized. The cooling oil flowing from the guide tube into the oil storage box contacts the heat sink, and the cooling oil can be dissipated and cooled through the heat sink. By adopting the internal circulation of the cooling oil, efficient heat dissipation of the rotor is achieved, and the installation and use of the motor will not be affected.

Description

Technical Field

[0001] The present invention relates to an axial flux motor and a humanoid robot joint module, in particular to a flattened heat dissipation axial flux motor and a humanoid robot joint module, belonging to the technical field of axial flux motors. Background Art

[0002] Axial flux motors, also known as "disc motors", are a unique type of electric motor characterized by the matching of the main magnetic field with the motor structure along the axis of rotation. The magnetic flux direction of axial flux motors is axial, the current-carrying conductors are placed radially, and the stator and rotor cores are disc-type structures arranged along the same axial direction. A "sandwich" structure can be used, that is, a rotor is set between two stators or a stator is set between two rotors to overcome the magnetic pull between the stator and the rotor.

[0003] When the axial flux motor is working, the magnetic field generated by the current passing through the stator acts on the permanent magnets on the rotor. When the permanent magnets on the rotor are repelled by the magnetic field, torque will be generated between them and the stator. Due to the greater strength of the permanent magnets, the axial flux motor can generate high torque while generating less current.

[0004] At present, in the dual-stator single-rotor axial flux motor, the rotor is tightly wrapped by two stators. This layout limits the natural dissipation of heat. Axial flux motors usually have a higher power density, which means that under the same volume, the motor generates more heat and the heat dissipation difficulty increases accordingly. Under high-speed rotation conditions, the eddy current losses in the rotor and magnetic field will increase significantly, causing the motor to heat up seriously. When the internal temperature of the motor is too high, the magnetism of the permanent magnet will weaken or even disappear completely, causing the motor performance to deteriorate or even fail.

[0005] A known Chinese public invention (publication number: CN117578808A) discloses a motor heat dissipation structure and an axial flux motor, which arranges a cooling system outside the cavity of the motor housing and fits the heating element of the motor through a heat conductive member to transfer the heat generated by the heating element to the cooling system outside the cavity, thereby reducing the axial space of the motor occupied by the heat dissipation structure and improving the heat dissipation efficiency of the motor;

[0006] The heat dissipation of the axial flux motor is achieved by adding a cooling system, but the heat dissipation effect on the rotor is poor, and the cooling system is arranged on the outside of the casing, which increases the volume of the motor and increases the difficulty of installation. Therefore, a flat heat dissipation axial flux motor and a humanoid robot joint module are proposed. Summary of the invention

[0007] In view of this, the present invention provides a flat heat dissipation axial flux motor and a humanoid robot joint module to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0008] The technical solution of the embodiment of the present invention is implemented as follows: a flat heat dissipation axial flux motor, comprising a heat dissipation assembly, wherein the heat dissipation assembly comprises a rotor disk, a rotor shaft, an inner core, a first flow channel, a second flow channel, a piston, an oil storage box, a heat sink, a fan blade, a guide tube, a sealing plate, a mounting plate and a magnetic block;

[0009] The rotor shaft is fixedly connected to the inside of the rotor disk, the inner core is fixedly connected to the inside of the rotor disk, the guide grooves are symmetrically opened on both sides of the inner core, the first flow channel is symmetrically opened in the inside of the rotor shaft, the second flow channel is opened in the inner center of the rotor shaft, the oil storage box is rotatably connected to the outer side wall of the rotor shaft, one end of the guide pipe is fixedly connected to one end of the rotor shaft and communicates with the second flow channel, the fan blade is fixedly connected to the other end of the guide pipe, the mounting disk is fixedly connected to the outer side wall of the guide pipe, the magnetic block is symmetrically fixedly connected to one side of the mounting disk, the heat sink is symmetrically fixedly connected to the inside of the oil storage box, six mounting tubes are symmetrically fixedly connected to the inside of the oil storage box, and the piston is slidably connected to the inner side wall of the mounting tube.

[0010] Further preferably, the piston is made of magnetic material, the adjacent surface magnetic poles of the piston and the magnetic block are the same, the position of the magnetic block corresponds to the position of the piston, the interior of the piston is slidably connected to a guide rod, and the outer side wall of the guide rod is sleeved with a spring.

[0011] Further preferably, the guide rod is fixedly connected to the inside of the oil storage box, one end of the spring presses against the oil storage box, the other end of the spring presses against the piston, and the mounting tube is connected to the oil storage box.

[0012] Further preferably, the first flow channel is communicated with the guide groove, the first flow channel is communicated with an end of the second flow channel away from the oil storage box, and the first flow channel is communicated with the oil storage box.

[0013] Further preferably, the oil storage box is rotatably connected to the outer side wall of the guide tube, the guide tube is communicated with the oil storage box, the fan blades are located outside the oil storage box, and the positions of the fan blades correspond to the positions of the heat sinks.

[0014] Further preferably, magnetic steels are symmetrically mounted on both sides of the rotor disk, one end of the heat sink away from the oil storage box is fixedly connected to a sealing plate, and the fan blades are located between the sealing plate and the oil storage box.

[0015] Further preferably, a main body component is installed on the outer side wall of the rotor shaft, and the main body component includes a front end cover, a rear end cover and connecting bolts;

[0016] The front end cover is fixedly connected to the rear end cover via the connecting bolts, the rotor shaft is rotatably connected to the interior of the front end cover and the rear end cover via two bearings, and the rotor disk is located inside the front end cover and the rear end cover.

[0017] Further preferably, the main body assembly further includes two stator cores and a stator winding;

[0018] The stator winding is wound inside the stator core, and the two stator cores are symmetrically fixedly connected inside the front end cover and the rear end cover.

[0019] Further preferably, the rotor disk is located between the two stator cores, the position of the magnetic steel corresponds to the position of the stator winding, and the oil storage box is fixedly connected to the rear end cover.

[0020] A humanoid robot joint module comprises an axial flux motor, wherein the axial flux motor is a flat heat dissipation axial flux motor.

[0021] Due to the adoption of the above technical scheme, the embodiment of the present invention has the following advantages: the present invention drives the mounting disk to rotate through the rotor shaft, and the mounting disk drives the magnetic block. Under the action of the magnetic thrust, the piston slides in the mounting tube. During the sliding process, the piston pushes the cooling oil in the oil storage box to flow into the first flow channel on the right, and then flows through the right guide groove, the left guide groove, the left first flow channel, the second flow channel and the guide tube in sequence, and finally circulates to the oil storage box. As the rotor disk continues to rotate, the cooling oil circulates, thereby achieving heat dissipation of the rotor. The cooling oil flowing from the guide tube into the oil storage box contacts the heat sink, and the cooling oil can be dissipated and cooled by the heat sink. During the rotation of the rotor shaft, the fan blades rotate with the rotor shaft. At this time, the flow speed of the external air can be accelerated, so that the air is fully in contact with the heat sink to dissipate the heat of the heat sink, thereby achieving rapid cooling of the cooling oil, and ensuring the heat dissipation effect of the rotor. By adopting the internal circulation of the cooling oil, efficient heat dissipation of the rotor is achieved without affecting the installation and use of the motor.

[0022] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural diagram of the flat heat dissipation axial flux motor of the present invention;

[0025] Figure 2 It is a structural diagram of the main components of the present invention;

[0026] Figure 3 It is an exploded view of the flat heat dissipation axial flux motor of the present invention;

[0027] Figure 4 It is a structural diagram of the heat dissipation component of the present invention;

[0028] Figure 5 This is a fan blade structure diagram of the present invention;

[0029] Figure 6 This is a structural diagram of the rotor disk of the present invention;

[0030] Figure 7 This is a diagram of the inner core structure of the present invention;

[0031] Figure 8 It is the structural diagram of the installation pipe of the present invention;

[0032] Fig. 9 It is a structural diagram of the oil storage box of the present invention;

[0033] Fig.10 It is a structural diagram of the sealing plate of the present invention.

[0034] Figure numerals: 101, heat dissipation assembly; 11, rotor disk; 12, magnet; 14, rotor shaft; 15, inner core; 16, guide groove; 17, first flow channel; 18, second flow channel; 19, mounting tube; 20, piston; 21, spring; 22, guide rod; 23, oil storage box; 24, heat sink; 25, fan blade; 26, guide tube; 27, sealing plate; 29, mounting disk; 30, magnet; 301, main body assembly; 31, front cover; 32, rear cover; 33, stator winding; 34, stator core; 35, connecting bolts. DETAILED DESCRIPTION

[0035] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0036] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0037] In the prior art, a cooling system is often used to dissipate heat for the axial flux motor. However, the heat dissipation effect on the rotor is poor, and the cooling system is arranged outside the casing, which increases the size of the motor and the difficulty of installation.

[0038] For this see Figure 1-10 The embodiment of the present invention provides a flat heat dissipation axial flux motor, including a heat dissipation assembly 101, the heat dissipation assembly 101 includes a rotor disk 11, a rotor shaft 14, an inner core 15, a first flow channel 17, a second flow channel 18, a piston 20, an oil storage box 23, a heat sink 24, a fan blade 25, a guide tube 26, a sealing plate 27, a mounting plate 29 and a magnetic block 30;

[0039] The rotor shaft 14 is fixedly connected to the inside of the rotor disk 11, the inner core 15 is fixedly connected to the inside of the rotor disk 11, the guide grooves 16 are symmetrically opened on both sides of the inner core 15, the first flow channel 17 is symmetrically opened in the inside of the rotor shaft 14, the second flow channel 18 is opened in the inner center of the rotor shaft 14, the oil storage box 23 is rotatably connected to the outer wall of the rotor shaft 14, one end of the guide pipe 26 is fixedly connected to one end of the rotor shaft 14 and communicates with the second flow channel 18, the fan blade 25 is fixedly connected to the other end of the guide pipe 26, the mounting plate 29 is fixedly connected to the outer wall of the guide pipe 26, the magnetic block 30 is symmetrically fixedly connected to one side of the mounting plate 29, the heat sink 24 is symmetrically fixedly connected to the inside of the oil storage box 23, six mounting tubes 19 are symmetrically fixedly connected to the inside of the oil storage box 23, the piston 20 is slidably connected to the inner wall of the mounting tube 19, the first flow channel 17 extends from one side of the outer wall of the rotor shaft 14 to the inside, and the second flow channel 18 extends from one end of the rotor shaft 14 to the inside;

[0040] In the process of dissipating heat and cooling the rotor, the flow path of the cooling oil is: oil storage box 23, right first flow channel 17, right guide groove 16, left guide groove 16, left first flow channel 17, second flow channel 18, guide pipe 26, oil storage box 23.

[0041] In one embodiment, the piston 20 is made of magnetic material, the adjacent magnetic poles of the piston 20 and the magnet 30 are the same, the position of the magnet 30 corresponds to the position of the piston 20, the piston 20 is slidably connected with a guide rod 22 inside, the outer wall of the guide rod 22 is sleeved with a spring 21, the guide rod 22 is fixedly connected to the inside of the oil storage box 23, one end of the spring 21 supports the oil storage box 23, and the other end of the spring 21 supports the piston 20, the mounting tube 19 is connected to the oil storage box 23, and then when the rotor shaft 14 rotates, the rotor shaft 14 drives the mounting plate 29 to rotate, and the mounting plate 29 drives the magnet 30, when the magnet 30 moves to the position corresponding to the piston 20, under the action of the magnetic thrust, the piston 20 slides in the mounting tube 19, and during the sliding process, the piston 20 pushes the cooling oil in the oil storage box 23 to flow into the first flow channel 17, thereby realizing the circulation of the cooling oil, the position of the piston 20 can be limited by the guide rod 22, and the piston 20 can be pushed to reset by the spring 21 to ensure the stroke of the piston 20.

[0042] In one embodiment, the first flow channel 17 is connected to the guide groove 16, and the first flow channel 17 is connected to one end of the second flow channel 18 away from the oil storage box 23. The first flow channel 17 is connected to the oil storage box 23. After the cooling oil flows into the first flow channel 17, it flows out from the second flow channel 18 to the guide pipe 26, and then flows into the oil storage box 23, thereby realizing the circulation of the cooling oil. A one-way valve is provided inside the guide pipe 26 to prevent the cooling oil from flowing back.

[0043] In one embodiment, the oil storage box 23 is rotatably connected to the outer wall of the guide tube 26, the guide tube 26 is communicated with the oil storage box 23, the fan blades 25 are located outside the oil storage box 23, the position of the fan blades 25 corresponds to the position of the heat sink 24, and the cooling oil flowing from the guide tube 26 into the oil storage box 23 contacts the heat sink 24. The cooling oil can be dissipated and cooled through the heat sink 24, thereby improving the heat dissipation effect on the rotor.

[0044] In one embodiment, magnets 12 are symmetrically installed on both sides of the rotor disk 11, and a sealing plate 27 is fixedly connected to one end of the heat sink 24 away from the oil storage box 23. The fan blades 25 are located between the sealing plate 27 and the oil storage box 23. When the rotor shaft 14 rotates, the fan blades 25 are driven to rotate. When the fan blades 25 rotate, the external air flow contacts the heat sink 24, thereby dissipating the heat from the heat sink 24 and realizing rapid cooling of the cooling oil.

[0045] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a flat heat dissipation axial flux motor and solves the problems through the above technical solutions:

[0046] When the rotor disk 11 drives the rotor shaft 14 to rotate, the rotor shaft 14 drives the mounting disk 29 to rotate, and the mounting disk 29 drives the magnetic block 30. Under the action of the magnetic thrust, the piston 20 slides in the mounting tube 19. During the sliding process, the piston 20 pushes the cooling oil in the oil storage box 23 to flow into the first flow channel 17 on the right, and then flows through the right guide groove 16, the left guide groove 16, the left first flow channel 17, the second flow channel 18 and the guide tube 26 in sequence, and finally circulates to the oil storage box 23. As the rotor disk 11 continues to rotate, the cooling oil circulates. In addition, the heat dissipation of the rotor can be achieved. The cooling oil flowing from the guide pipe 26 into the oil storage box 23 contacts the heat sink 24. The cooling oil can be dissipated and cooled through the heat sink 24. During the rotation of the rotor shaft 14, the fan blades 25 rotate along with the rotor shaft 14. At this time, the flow rate of the external air can be accelerated to allow the air to fully contact the heat sink 24 to dissipate the heat of the heat sink 24 and achieve rapid cooling of the cooling oil. By adopting the internal circulation of the cooling oil, efficient heat dissipation of the rotor is achieved without affecting the installation and use of the motor.

[0047] In one embodiment, a main body assembly 301 is installed on the outer side wall of the rotor shaft 14, and the main body assembly 301 includes a front cover 31, a rear cover 32 and connecting bolts 35;

[0048] The front end cover 31 is fixedly connected to the rear end cover 32 by connecting bolts 35, and the rotor shaft 14 is rotatably connected to the inside of the front end cover 31 and the rear end cover 32 by two bearings. The rotor disk 11 is located inside the front end cover 31 and the rear end cover 32, thereby facilitating the disassembly and installation of the front end cover 31 and the rear end cover 32 and facilitating maintenance.

[0049] In one embodiment, the main body assembly 301 further includes two stator cores 34 and a stator winding 33;

[0050] The stator winding 33 is wound around the inside of the stator core 34. The two stator cores 34 are symmetrically fixedly connected to the inside of the front cover 31 and the rear cover 32. The rotor disk 11 is located between the two stator cores 34. The position of the magnetic steel 12 corresponds to the position of the stator winding 33. The oil storage box 23 is fixedly connected to the rear cover 32. When the stator winding 33 is energized, the rotor disk 11 drives the rotor shaft 14 to rotate, thereby driving the motor.

[0051] A humanoid robot joint module comprises an axial flux motor, which is a flattened heat dissipation axial flux motor.

[0052] When the present invention is working, the stator winding 33 is energized, and the magnetic field generated by the current passing through the stator acts on the magnetic steel 12 on the rotor disk 11. When the magnetic steel 12 on the rotor disk 11 is repelled by the magnetic field, the rotor disk 11 drives the rotor shaft 14 to rotate, thereby realizing the output of power. When the rotor disk 11 drives the rotor shaft 14 to rotate, the rotor shaft 14 drives the mounting disk 29 to rotate, and the mounting disk 29 drives the magnetic block 30. Under the action of the magnetic thrust, the piston 20 slides in the mounting tube 19. During the sliding process, the piston 20 pushes the cooling oil in the oil storage box 23 to flow into the first flow channel 17 on the right side, and then flows through the right side in sequence. The guide groove 16, the left guide groove 16, the left first flow channel 17, the second flow channel 18 and the guide pipe 26 finally circulate into the oil storage box 23. As the rotor disk 11 continues to rotate, the cooling oil circulates, thereby achieving heat dissipation of the rotor. The cooling oil flowing from the guide pipe 26 into the oil storage box 23 contacts the heat sink 24, and the cooling oil can be dissipated and cooled by the heat sink 24. During the rotation of the rotor shaft 14, the fan blades 25 rotate with the rotor shaft 14. At this time, the flow speed of the external air can be accelerated, so that the air is fully in contact with the heat sink 24 to dissipate the heat of the heat sink 24.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flat heat dissipation axial flux motor, comprising a heat dissipation component (101), characterized in that: The heat dissipation assembly (101) comprises a rotor disk (11), a rotor shaft (14), an inner core (15), a first flow channel (17), a second flow channel (18), a piston (20), an oil storage box (23), a heat sink (24), a fan blade (25), a flow guide tube (26), a sealing plate (27), a mounting disk (29), and a magnetic block (30); The rotor shaft (14) is fixedly connected to the inside of the rotor disk (11); the inner core (15) is fixedly connected to the inside of the rotor disk (11); guide grooves (16) are symmetrically provided on both sides of the inner core (15); the first flow channel (17) is symmetrically provided inside the rotor shaft (14); the second flow channel (18) is provided at the inner center of the rotor shaft (14); the oil storage box (23) is rotatably connected to the outer wall of the rotor shaft (14); one end of the guide pipe (26) is fixedly connected to one end of the rotor shaft (14) and communicates with the second flow channel (18); the fan blade (25) is fixedly connected to the rotor shaft (14); The other end of the guide tube (26), the mounting plate (29) is fixedly connected to the outer wall of the guide tube (26), the magnetic block (30) is symmetrically fixedly connected to one side of the mounting plate (29), the heat sink (24) is symmetrically fixedly connected to the inside of the oil storage box (23), the inside of the oil storage box (23) is symmetrically fixedly connected with six mounting tubes (19), the piston (20) is slidably connected to the inner wall of the mounting tube (19), one end of the heat sink (24) away from the oil storage box (23) is fixedly connected to a sealing plate (27), and the fan blade (25) is located between the sealing plate (27) and the oil storage box (23).

2. A flat heat dissipation axial flux motor according to claim 1, characterized in that: The piston (20) is made of a magnetic material. The adjacent magnetic poles of the piston (20) and the magnetic block (30) are the same. The position of the magnetic block (30) corresponds to the position of the piston (20). The piston (20) is internally slidably connected to a guide rod (22). The outer wall of the guide rod (22) is sleeved with a spring (21).

3. A flat heat dissipation axial flux motor according to claim 2, characterized in that: The guide rod (22) is fixedly connected to the inside of the oil storage box (23), one end of the spring (21) presses against the oil storage box (23), the other end of the spring (21) presses against the piston (20), and the mounting tube (19) is in communication with the oil storage box (23).

4. A flat heat dissipation axial flux motor according to claim 3, characterized in that: The first flow channel (17) is in communication with the guide groove (16), the first flow channel (17) is in communication with an end of the second flow channel (18) away from the oil storage box (23), and the first flow channel (17) is in communication with the oil storage box (23).

5. A flat heat dissipation axial flux motor according to claim 4, characterized in that: The oil storage box (23) is rotatably connected to the outer wall of the flow guide tube (26), the flow guide tube (26) is in communication with the oil storage box (23), the fan blades (25) are located outside the oil storage box (23), and the position of the fan blades (25) corresponds to the position of the heat sink (24).

6. A flat heat dissipation axial flux motor according to claim 5, characterized in that: Magnetic steels (12) are symmetrically mounted on both sides of the rotor disk (11).

7. A flat heat dissipation axial flux motor according to claim 6, characterized in that: A main body component (301) is mounted on the outer side wall of the rotor shaft (14), and the main body component (301) comprises a front end cover (31), a rear end cover (32) and connecting bolts (35); The front end cover (31) is fixedly connected to the rear end cover (32) via the connecting bolts (35); the rotor shaft (14) is rotatably connected to the interior of the front end cover (31) and the rear end cover (32) via two bearings; and the rotor disk (11) is located inside the front end cover (31) and the rear end cover (32).

8. A flat heat dissipation axial flux motor according to claim 7, characterized in that: The main body component (301) further includes two stator cores (34) and a stator winding (33); The stator winding (33) is wound inside the stator iron core (34), and the two stator iron cores (34) are symmetrically fixedly connected inside the front end cover (31) and the rear end cover (32).

9. A flat heat dissipation axial flux motor according to claim 8, characterized in that: The rotor disk (11) is located between the two stator cores (34), the position of the magnetic steel (12) corresponds to the position of the stator winding (33), and the oil storage box (23) is fixedly connected to the rear end cover (32).

10. A humanoid robot joint module, comprising an axial flux motor, characterized in that: The axial flux motor is a flattened heat dissipation axial flux motor as described in any one of claims 1-9.

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