Magnetic drive device and magnetic drive power generation device

Abstract

To provide a magnetic drive device that can continuously apply rotational torque using magnetic force. [Solution] A magnetic force drive device 40 that uses magnetic force as an energy source, comprising a power assist mechanism 41 including a rotating shaft 1, a fixed-side magnet unit 42 having a plurality of fixed-side magnets 3 fixed along the circumference of a circle of a predetermined radius centered on the rotating shaft 1, and a rotating-side magnet unit 43 having a plurality of rotating-side magnets 4 arranged to revolve on the circumference via holders 5, 6 attached to the rotating shaft 1, Multiple stationary magnets 3 and multiple rotating magnets 4 are arranged to face each other with a three-dimensional inclination angle such that the repulsive force between like poles generates a rotational force in a predetermined direction in the rotating magnet unit 43.

Description

Technical Field

[0001] The present invention relates to a magnetic drive device and a magnetic drive power generation device. Specifically, it relates to a magnetic drive device that uses magnetism as the main energy source, and a magnetic drive power generation device that combines this magnetic drive device with an auxiliary motor.

Background Art

[0002] Regarding drive devices that use magnetism as an energy source, several proposals have been made. For example, Patent Document 1 discloses a device that inserts and removes a magnetic flux accommodating plate between a plurality of permanent magnets fixed to the outer peripheral portion of a disk-shaped rotating body and a permanent magnet fixed facing the permanent magnets of the rotating body with a gap, and controls the repulsive force to convert the repulsive force into the rotational force of the rotating body. In this device, the insertion and removal of the magnetic flux accommodating plate also utilizes the generated rotational force, and it is a drive device that utilizes only magnetic energy. Patent Document 2 discloses a drive device that disposes a fixed magnet body with N and S poles facing each other and a triangular tip on the center side protruding from the inner peripheral portion of a ring, provides a permanent magnet with a triangular tip of N or S pole at a position facing the fixed magnet body on the outer peripheral portion of the rotating body, and further provides an inertial accelerator outside the rotating body to continuously rotate the rotating body.

[0003] Also, Patent Document 3 discloses a drive device that forms a rotating body by fixing a magnet with an outer end of N or S pole, arranges a surrounding magnet body composed of a large number of magnets with the same or opposite poles as the magnetic poles of the rotating body around the rotating body, and covers the outside of the magnet of the rotating body with a magnetic shielding member except for a part on the side, so as to incline the repulsive force or attractive force between the magnet of the fixed body and the magnet of the rotating body to generate a rotational force on the rotating body. [Problems to be Solved by the Invention]

[0004] Fossil fuels such as oil and coal, which are the most widely used energy sources, have problems such as environmental pollution and resource depletion associated with their use. Nuclear power also has major problems such as serious disasters and the disposal of radioactive waste associated with the use of radioactive fuels. On the other hand, natural energy sources such as solar and wind power have the advantage of having fewer of these problems, but they have the disadvantage of being easily affected by weather conditions. Magnetic energy, like the natural energy sources mentioned above, could be an important energy source without environmental pollution problems, but although it has been proposed as an idea, as shown in Patent Documents 1-3, there have been very few reported examples of its practical application as a power source for drive systems and the like. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2001-197721 [Patent Document 2] Japanese Patent Application Publication No. 11-18409 [Patent Document 3] Japanese Patent Publication No. 2001-309639 [Overview of the Initiative] Means for solving the problem and their effects

[0006] The present invention was made to solve the above problems, and aims to provide a magnetic drive device that can continuously apply rotational torque using magnetic force with an unprecedented configuration, and a magnetic drive power generation device that can be operated as an independent power source by using the magnetic drive device and an auxiliary motor in combination.

[0007] To achieve the above objective, the magnetic drive device (1) according to the present invention is: A magnetic drive device that uses magnetic force as an energy source, The axis of rotation and A fixed-side magnet unit having a plurality of fixed-side magnets fixed along the circumference of a circle with a predetermined radius centered on the axis of rotation, The power assist mechanism includes a rotating magnet unit having a plurality of rotating magnets arranged to revolve on the circumference via a holder attached to the rotating shaft, The present invention is characterized in that the plurality of stationary magnets and the plurality of rotating magnets are arranged to face each other with a three-dimensional inclination angle such that the repulsive force between like poles generates a rotational force in a predetermined direction in the rotating magnet unit.

[0008] According to the magnetic drive device (1) described above, the plurality of stationary magnets and the plurality of rotating magnets constituting the power assist mechanism are arranged to face each other with a three-dimensional inclination angle such that the repulsive force between like poles generates a rotational force in a predetermined direction in the rotating magnet unit. Therefore, the magnetic force of the plurality of stationary magnets and the plurality of rotating magnets, i.e., the repulsive force between like poles, can be used to continuously apply rotational torque to the rotating shaft.

[0009] Furthermore, the magnetic drive device (2) according to the present invention is, in the above magnetic drive device (1), The three-dimensional inclination angle is set such that, on the circumference, the gap between the magnets is narrower when the rotating magnet moves away from the stationary magnet than when the rotating magnet approaches the stationary magnet.

[0010] According to the magnetic drive device (2) described above, by setting the three-dimensional inclination angle to the angle described above, the gap between the magnets when the rotating magnet approaches the stationary magnet, i.e., the gap between the magnets on the entry side, can be made wider than the gap between the magnets when the rotating magnet moves away from the stationary magnet, i.e., the gap between the magnets on the departure side, thereby weakening the repulsive force between the magnets on the entry side. On the other hand, the gap between the magnets on the departure side can be made narrower than the gap between the magnets on the entry side, thereby strengthening the repulsive force between the magnets on the departure side. Therefore, the unidirectional rotational movement involving the approach and departure of the rotating magnet relative to the stationary magnet becomes sustained by the repulsive force between the magnets on the departure side, thereby enhancing the sustained rotational effect of the rotating magnet unit.

[0011] Furthermore, the magnetic drive device (3) according to the present invention is configured in the magnetic drive device (1) or (2) described above, The three-dimensional inclination angle is set to an angle that reduces the intrusion resistance load generated when the rotating magnet approaches the stationary magnet on the circumference, and increases the detachment propulsion load generated when the rotating magnet moves away from the stationary magnet.

[0012] According to the magnetic drive device (3) described above, since the three-dimensional inclination angle is set to the angle described above, the intrusion resistance load can be reduced and the detachment propulsion load can be increased. Therefore, the unidirectional rotational movement involving the approach and detachment of the rotating magnet to the stationary magnet becomes sustained by increasing the detachment propulsion load on the detachment side, i.e., increasing the repulsive force, and the rotational sustainment effect of the rotating magnet unit can be enhanced.

[0013] Furthermore, the magnetic drive device (4) according to the present invention is, in the above magnetic drive device (3), The opposing surfaces of the plurality of stationary magnets to the plurality of rotating magnets are A first inclination angle for reducing the intrusion resistance load is set in the direction of the center of the circumference, In the circumferential direction, there is a second inclination angle for increasing the detachment propulsion load, The opposing surfaces of the plurality of rotating magnets to the plurality of stationary magnets are, It is characterized by having a third inclination angle for applying a rotational moment in the circumferential direction.

[0014] According to the magnetic drive device (4) described above, by setting the opposing surfaces of the plurality of stationary magnets to the first and second inclination angles, the effect of reducing the inrush resistance load and increasing the detachment propulsion load can be enhanced. Furthermore, by setting the opposing surfaces of the plurality of rotating magnets to the third inclination angle, the effect of applying the rotational moment can be enhanced.

[0015] Further, in the magnetic drive device (5) according to the present invention, in any one of the magnetic drive devices (1) to (4), both end portions of the plurality of fixed-side magnets in the circumferential direction have tapered surfaces inclined in a direction away from the plurality of rotating-side magnets.

[0016] According to the magnetic drive device (5), since both end portions of the plurality of fixed-side magnets in the circumferential direction have the tapered surfaces, when the rotating-side magnet approaches the fixed-side magnet and when the rotating-side magnet moves away from the fixed-side magnet, the attractive force between these magnets can be weakened, and the effect of suppressing the decrease in the rotational torque can be enhanced.

[0017] Further, the magnetic drive device (6) according to the present invention is characterized in that, in any one of the magnetic drive devices (1) to (5), a flywheel is provided on the rotating shaft.

[0018] According to the magnetic drive device (6), since a flywheel is provided on the rotating shaft, the rotational operation of the rotating shaft can be smoothed by the inertial force of the flywheel.

[0019] Further, the magnetic drive device (7) according to the present invention is characterized in that, in any one of the magnetic drive devices (1) to (6), the magnet unit including the fixed-side magnet unit and the rotating-side magnet unit is arranged in a double row in a plane-symmetric manner with respect to the plane orthogonal to the rotating shaft. According to the magnetic drive device (7), since the magnet units are arranged in a double row in a plane-symmetric manner, the rotational torque applied to the rotating shaft can be doubled.

[0020] Further, the magnetic drive device (8) according to the present invention is characterized in that, in any one of the magnetic drive devices (1) to (7), the power assist mechanisms are arranged in parallel. According to the magnetic drive device (8), since the power assist mechanisms are arranged in parallel, the output from the rotating shaft can be doubled.

[0021] Further, the magnetic force drive device (9) according to the present invention is characterized in that, in any one of the above magnetic force drive devices (1) to (8), it includes an auxiliary motor for transmitting rotational power to the rotating shaft. According to the above magnetic force drive device (9), it is possible to transmit the rotational power of the auxiliary motor to the rotating shaft, provide the power necessary for the rotating shaft to start rotating, and rotate the rotating shaft at a high speed so as to obtain the desired output.

[0022] Further, the magnetic force drive device (10) according to the present invention is such that, in the above magnetic force drive device (9), it includes a detection unit for detecting the rotational speed of the rotating shaft, an auxiliary rotating shaft is attached to the input side of the rotating shaft via a cam clutch, and the auxiliary motor is connected to the auxiliary rotating shaft via a first power transmission unit.

[0023] According to the above magnetic force drive device (10), it is possible to intermittently transmit the rotational power of the auxiliary motor to the rotating shaft via the first power transmission unit, the auxiliary rotating shaft, and the cam clutch. Since the power assist mechanism has a rotational continuous action due to the repulsive force of the magnetic force, it is possible to maintain the high-speed rotation of the rotating shaft by the intermittent rotation control of the auxiliary motor, save the operating power of the auxiliary motor, and at the same time extend the life of the auxiliary motor.

[0024] Further, the magnetic force drive power generation device (1) according to the present invention includes the above magnetic force drive device (9) or (10), and a generator is connected to the output side of the rotating shaft of the magnetic force drive device via a second power transmission unit. According to the above-described magnetic-driven power generation device (1), the magnetic drive device provides a counter-power that balances the rotational torque of the generator, effectively creating a no-load state. At the same time, the auxiliary motor rotates the generator at a high speed to achieve the required output, thereby obtaining the desired power output. Therefore, this power generation device has excellent features such as not generating CO2 or exhaust gases, not requiring refueling, and being unaffected by external environmental factors such as weather and time of day.

[0025] Furthermore, the magnetic drive power generation device (2) according to the present invention is, in the above magnetic drive power generation device (1), The aforementioned magnetic drive device includes multiple units, A control panel is provided in each of these magnetic drive devices to control the electricity generated by the generator, The control panel is connected to a power storage system that stores the aforementioned power, The system is characterized in that a portion of the power from the energy storage system is returned to the control panel and used as the power source for the auxiliary motor of the magnetic drive device.

[0026] According to the magnetic drive power generation device (2) described above, an independent power supply system can be constructed. For example, by increasing the number of magnetic drive devices installed according to the purpose of use and integrating them as a system, it can be applied to a variety of uses, such as stores and convenience stores that handle frozen foods, hospitals and clinics where power outages are unacceptable, and sewage treatment plants that operate continuously for 24 hours and require a large amount of electricity. In addition, it has economic advantages such as no restrictions on the operating time of the power generation device, being resistant to typhoons and earthquakes due to its independent power supply, and having no running costs. Furthermore, it is a groundbreaking system that can make a significant contribution to society as a clean energy power generation device that protects the global environment by not generating CO2 or exhaust gases. [Brief explanation of the drawing]

[0027] [Figure 1] This is a partial cross-sectional front view showing the main components of a magnetic drive power generation device according to an embodiment of the present invention. [Figure 2] This is a left side view of Figure 1, illustrating the positional relationship of the powertrain of the magnetic drive power generation device. [Figure 3] This is a partially enlarged view of the rotation speed detection unit installed on the rotating shaft, with (a) being a front view and (b) being a left side view. [Figure 4] This is a view from arrow A in Figure 1, showing the arrangement relationship between the stationary magnet and the rotating magnet, which are provided with a three-dimensional inclination angle. [Figure 5] Figure 1 shows the view from arrow BB, and the views from arrows C, D, and E within the view from arrow BB, illustrating the arrangement of the stationary magnet and the rotating magnet with a three-dimensional inclination angle. [Figure 6] This is a partially enlarged view showing the mounting structure of the rotating magnet that constitutes the rotating magnet unit, where (a) is a partially enlarged cross-sectional view, (b) is a cross-sectional view along line aa in (a), and (c) is a cross-sectional view along line bb in (a). [Figure 7] This figure shows the output characteristics of the generator equipped in the magnetic drive power generation device according to the embodiment. [Figure 8] This diagram illustrates the relationship between the gap and repulsive force between opposing magnets of the same poles (stationary magnet and rotating magnet) that constitute the power assist mechanism. [Figure 9] This flowchart shows an example of a control algorithm for an auxiliary motor performed by the control panel of a magnetic drive power generation device according to an embodiment. [Figure 10] This is a diagram showing the main components of a magnetic drive device according to another embodiment. [Figure 11] This figure shows the main components of a magnetic drive power generation device according to another embodiment, where (a) is a partial cross-sectional front view and (b) is a left side view of (a). [Figure 12] This is a system configuration diagram of a magnetically driven power generation device according to yet another embodiment. [Modes for carrying out the invention]

[0028] The embodiments of the magnetic drive device and magnetic drive power generation device according to the present invention will be described below with reference to the drawings. The following description discloses a good example of the present invention, and the present invention is not limited to these embodiments. For example, the structure of the magnetic drive device and magnetic drive power generation device disclosed in each embodiment is merely a good example and does not negate other possibilities. Furthermore, in the following explanation, the terms "repulsive force" and "attractive force" between magnets will be used. Repulsive force occurs when the same magnetic poles face each other, and attractive force occurs when opposite magnetic poles face each other. Therefore, the explanation of the polarity of the magnets, namely the north and south poles, will be omitted when discussing repulsive and attractive forces.

[0029] Figure 1 is a partial cross-sectional front view showing the main components of a magnetic drive power generation device according to an embodiment of the present invention. Figure 2 is a left side view of Figure 1, showing the positional relationship of the powertrain of the magnetic drive power generation device. The magnetic drive power generation device 50 comprises a magnetic drive device 40, a generator 15, and a control panel 30. The magnetic drive device 40 comprises a power assist mechanism 41 and an auxiliary motor 11. The power assist mechanism 41 comprises a rotating shaft 1, a stationary magnet unit 42, and a rotating magnet unit 43, and the stationary magnet unit 42 and the rotating magnet unit 43 constitute a pair of magnet units 44.

[0030] The magnetic drive power generation device 50 generates the rotational torque necessary for the power output of the generator 15 on the rotating shaft 1 by the magnetic force (repulsive force generation) action of the power assist mechanism 41 of the magnetic drive device 40, and at the same time, the high-speed rotation function of the auxiliary motor 11 allows the rotating shaft 1 to be controlled to the rotational speed necessary to obtain the desired power output.

[0031] The rotating shaft 1, a component of the power assist mechanism 41, has one end on the input side and the other end on the output side. The input side is connected to the auxiliary motor 11 via the cam clutch 9a, the auxiliary rotating shaft 2, and the first power transmission unit 37, while the output side is connected to the generator 15 via the second power transmission unit 38. The generator 15 has a coreless structure that does not use an iron core, and is a generator that has reliable and smooth rotational performance without generating cogging torque or iron loss, such as a permanent magnet type three-phase AC generator. The auxiliary motor 11 is fixed to the frame 21 via a motor stay 11a, and the generator 15 is also fixed to the frame 21. An adjuster pad 22 is provided on the bottom surface of the frame 21.

[0032] In the magnetic drive device 40, the power systems are separated into the rotating shaft 1 and the auxiliary rotating shaft 2, and the two shafts are conditionally joined by a cam clutch 9a. In other words, it is a structure that does not transmit power from the rotating shaft 1 to the auxiliary rotating shaft 2, but allows power to be transmitted from the auxiliary rotating shaft 2 to the rotating shaft 1. The purpose of this is to intermittently drive the auxiliary motor 11 according to the rotational speed of the rotating shaft 1. Further details will be explained later with reference to Figure 9.

[0033] One end of the rotating shaft 1, the cam clutch 9a, and the auxiliary rotating shaft 2 are mounted on a first bearing holder 9 equipped with an oil seal 9b, a ball bearing 9c, and a collar 9d. Furthermore, the other end of the rotating shaft 1 is attached to a second bearing holder 10 which is equipped with a collar 10a and a collar 10b with an O-ring. The first bearing holder 9 and the second bearing holder 10 are fixed to the frame 21, and the rotating shaft 1 is horizontally supported by the first bearing holder 9 and the second bearing holder 10.

[0034] The first power transmission unit 37 is composed of a mechanism including, for example, a timing pulley 12 attached to the rotating shaft of the auxiliary motor 11, a timing pulley 13 attached to the auxiliary rotating shaft 2, and a timing belt 14 wound around these timing pulleys 12 and 13. The second power transmission unit 38 is composed of a mechanism including, for example, a timing pulley 16 attached to the other end of the rotating shaft 1, a timing pulley 17 attached to the rotating shaft of the generator 15, and a timing belt 18 wound around these timing pulleys 16 and 17.

[0035] A flywheel 7 is positioned between the rotating magnet unit 43 and the second bearing holder 10 on the rotating shaft 1. Furthermore, a rotation speed detection unit 39 for detecting the rotation speed of the rotating shaft 1 is provided between the stationary magnet unit 42 and the first bearing holder 9 on the rotating shaft 1.

[0036] Figure 3 is a partially enlarged view showing the main components of the rotation speed detection unit 39, where (a) is a front view and (b) is a left side view. The rotation speed detection unit 39 comprises a fastening key 19a attached to the rotating shaft 1, a rotation detection plate 19 attached to the fastening key 19a, and a photosensor 20 disposed at the bottom of the rotation detection plate 19. The photosensor 20 is attached to a sensor stay 20a attached to the first bearing holder 9.

[0037] The rotation detection plate 19, fixed to the rotating shaft 1, is made up of a circular plate and has a single notched detection groove 19b formed on its outer circumference. The photosensor 20 comprises a light-emitting part and a light-receiving part, and is mounted so that the outer circumference of the rotation detection plate 19 is positioned between the light-emitting part and the light-receiving part. The photosensor 20 detects the passage of the rotating rotation detection plate 19 through the detection groove 19b, thereby counting the number of rotations of the rotating shaft 1.

[0038] Next, the characteristic configurations of the stationary magnet unit 42 and the rotating magnet unit 43, which constitute the power assist mechanism 41 of the magnetic drive device 40, will be described with reference to Figures 1, 4, and 6. Figure 4 is a view from arrow A in Figure 1, and shows the arrangement relationship between the stationary magnet 3 and the rotating magnet 4, which are provided with a three-dimensional inclination angle. Figure 5 is a diagram showing the view from arrow BB in Figure 1, and the views from arrows C, D, and E in the BB view, illustrating the arrangement relationship between the stationary magnet 3 and the rotating magnet 4, which are provided with a three-dimensional inclination angle. Figure 6 is a partially enlarged view showing the mounting structure of the rotating magnet 4 that constitutes the rotating magnet unit 43, where (a) is a partially enlarged cross-sectional view, (b) is a cross-sectional view along line aa in (a), and (c) is a cross-sectional view along line bb in (a).

[0039] As shown in Figure 5, the stationary magnet unit 42 comprises a plurality (two in this embodiment) of stationary magnets 3 fixed along the circumference of a circle with a predetermined radius (half of the orbital diameter R) centered on the rotation axis 1. Furthermore, as shown in Figure 1, the stationary magnet unit 42 includes a magnet mounting stay 3a to which these stationary magnets 3 are attached, a stay mounting bracket 3b that supports the magnet mounting stay 3a, and a T-groove nut 3c for fixing the stay mounting bracket 3b to the frame 21. These stationary magnets 3 are composed of, for example, magnets with a circular arc shape having a central angle of 60 to 90 degrees, and are arranged approximately point-symmetrically around the rotation axis 1. It is preferable to use neodymium magnets with strong magnetic force for the circular arc-shaped stationary magnets 3. For example, standard grades such as N35 and N40 can be used for these neodymium magnets.

[0040] As shown in Figures 1 and 5, the rotating magnet unit 43 has a plurality of (eight in this embodiment) rotating magnets 4 arranged to revolve on the circumference via a shaft holder 6 attached to the rotating shaft 1 and a rotating holder 5 attached to the shaft holder 6. The rotating magnet 4 is a circular magnet having a tapered portion 4h with a third inclination angle θ (see Figure 4) on the surface facing the stationary magnet 3, and is fixed to a holder 4g attached to the rotating holder 5. It is preferable to use a neodymium magnet with strong magnetic force for the rotating magnet 4 having the tapered portion 4h. For example, standard grades such as N35 and N40 can be used for this neodymium magnet.

[0041] As shown in Figure 6, the retainer 4g is composed of a fixed boss 4a to which the rotating magnet 4 is fixed, a support rod 4b that supports the fixed boss 4a, a flange bush 4c into which the support rod 4b is inserted, a positioning washer 4d attached to the flange portion of the flange bush 4c, and a collar 4e that adjusts the gap between the fixed boss 4a and the positioning washer 4d.

[0042] The fixed boss 4a is made of free-cutting steel and has a recess 4aa into which the rotating magnet 4 is fixed and an insertion hole 4ab into which the tip of the support rod 4b is inserted. The inner diameter portion of the insertion hole 4ab has a flat surface portion 4ac in which a part of the inner circumferential surface is machined flat. In addition, a screw hole 4ad is formed in the fixed boss 4a, leading from the outer circumferential surface to the flat surface portion 4ac. A set screw 4ae is screwed into the screw hole 4ad, and the tip of the support rod 4b can be fixed to the insertion hole 4ab by tightening the set screw 4ae. The rotating magnet 4 is fixed to the recess 4aa of the fixed boss 4a with magnetic adhesive. The positioning washer 4d also has a flat surface portion 4da formed in a part of its inner diameter hole, and the flange bush 4c inserted into the rotating holder 5 is fixed to the rotating holder 5 by a bolt 4f via the positioning washer 4d.

[0043] The holder 4g configured as described above has a structure to prevent the rotating magnet 4 from rotating. Therefore, when the rotating magnet 4 performs orbital motion, the tapered portion 4h (third inclination angle θ) can be kept fixed in a predetermined direction at all times.

[0044] As shown in Figures 4 and 5, the multiple stationary magnets 3 mounted on the stationary magnet unit 42 and the multiple rotating magnets 4 mounted on the rotating magnet unit 43 are arranged to face each other with a three-dimensional inclination angle so that the repulsive force between like poles generates a rotational force in a predetermined direction on the rotating magnet unit 43.

[0045] More specifically, as shown in Figure 4, the opposing surface of the stationary magnet 3 to the rotating magnet 4 has a first inclination angle α toward the center of the circumference of the circle with orbital diameter R. Furthermore, as shown in Figure 5, the opposing surface of the stationary magnet 3 to the rotating magnet 4 has a second inclination angle β in the circumferential direction of the orbital diameter R, such that the gap between the magnets narrows on the side where the rotating magnet 4 leaves the rotating magnet 4 when viewed from the direction of rotation of the rotating magnet 4, and also has a second inclination angle β on the side where the gap between the magnets widens on the side where the rotating magnet 4 enters the magnet. Furthermore, the tapered portion 4h, which is the opposing surface of the rotating magnet 4 to the stationary magnet 3, has a third inclination angle θ in the circumferential direction of the orbital diameter R.

[0046] The first inclination angle α is set to an angle that reduces the inrush resistance load that occurs when the rotating magnet 4 revolves and approaches the stationary magnet 3, for example, in the range of 25 to 35 degrees. The second inclination angle β is set to an angle that increases the detachment propulsion load generated when the rotating magnet 4 revolves and moves away from the stationary magnet 3, for example, in the range of 5 to 10 degrees. The third inclination angle θ is set to an angle that imparts a rotational moment to the rotating magnet 4 to rotate the rotation axis 1, for example, in the range of 25 to 35 degrees. These angles are set to an appropriate angle depending on the value of the orbital diameter R.

[0047] When the angles of the first inclination angle α, the second inclination angle β, and the third inclination angle θ described above are combined, as shown in the view from arrow E in Figure 5, the gap between the magnets on the detaching side when the rotating magnet 4 revolves and moves away from the stationary magnet 3 becomes η1, and the gap between the magnets on the intrusion side when the rotating magnet 4 revolves and approaches the stationary magnet 3 becomes η2, resulting in a configuration where the gap between the magnets η1 is narrower than the gap η2. For example, when the orbital diameter R is 220 mm, the first inclination angle α is 30 degrees, the second inclination angle β is 5 degrees, and the third inclination angle θ is 30 degrees. It is preferable to set the gaps η1 and η2 between the magnets by considering the relationship between the gap and the strength of the repulsive force between opposing magnets of the same pole, as shown in Figure 8, which will be described later. For example, it is preferable to set the three-dimensional inclination angle between the stationary magnet 3 and the rotating magnet 4 such that the gap η2 between the magnets on the entry side is a gap where the repulsive force between the magnets is 0 kgf, and the gap η1 between the magnets on the departure side is a gap where the repulsive force between the magnets is a value required for rotational force.

[0048] In other words, the three-dimensional inclination angle described above is set such that, on the circumference of a circle with orbital diameter R, the gap η1 between the magnets when the rotating magnet 4 moves away from the stationary magnet 3 is narrower than the gap η2 between the magnets when the rotating magnet 4 moves away from the stationary magnet 3 as it revolves.

[0049] In other words, the three-dimensional inclination angle described above is set to an angle that reduces the intrusion resistance load generated when the rotating magnet 4 revolves on the circumference of a circle with orbital diameter R and approaches the stationary magnet 3, and increases the detachment propulsion load generated when the rotating magnet 4 revolves and moves away from the stationary magnet 3.

[0050] Furthermore, both ends of the multiple stationary magnets 3 in the circumferential direction have tapered surfaces 3d that are inclined in a direction away from the multiple rotating magnets 4. The tapered surface 3d on the intrusion side, which is one end, reduces the intrusion resistance load, and the tapered surface 3d on the detachment side, which is the other end, suppresses the resistance to the detachment propulsion load. In other words, the tapered surfaces 3d reduce the attractive force at the point where the relationship between the two magnets is detachment or intrusion.

[0051] As described above, the magnetic drive device 40 is a drive device that uses magnetism as its main energy source, and is configured such that a fixed magnet 3 with an arc shape and a rotating magnet 4 with a tapered portion 4h are facing each other so as to generate a repulsive force between like poles. Furthermore, in the direction of rotation of the rotating magnet 4, on the intrusion side where it approaches the fixed magnet 3, the gap η2 between the two magnets 3 and 4 is widened to weaken the magnetic force, and on the departure side where the two magnets 3 and 4 move away from each other, the gap η1 is narrowed so that a rotational force can be generated by the repulsive force between the two magnets 3 and 4, and a three-dimensional inclination angle is provided between the two magnets 3 and 4.

[0052] Next, we will explain the phenomenon in which rotational force is generated by magnetic force, which is a characteristic feature of the power assist mechanism 41 in the magnetic drive device 40. Multiple stationary magnets 3 and multiple rotating magnets 4 arranged to face each other with like poles generate a repulsive force. By arranging the shape, positional relationship, and inclination angle of these stationary magnets 3 and rotating magnets 4 as described above, it becomes possible to generate a force (rotational force P) that rotates the rotating magnets 4 in a predetermined direction (the rotational direction in Figure 5) by utilizing this repulsive force. Furthermore, when R is the orbital diameter of the rotating magnet 4 around the rotation axis 1, its rotational torque Tr is expressed as Tr = P × R / 2. The magnetic drive device 40, which is equipped in the magnetic drive power generation device 50, is a device that can obtain the rotational torque Tr required for the power output of the generator 15.

[0053] The generator 15 generates more power as its rotational speed increases. The rotational torque Tr required for the desired power output can be obtained by the magnetic drive device 40 described above, while higher rotational speeds can be achieved by adding power with the auxiliary motor 11 to obtain the desired power output. In other words, the magnetic drive power generation device 50 is configured to use an auxiliary motor 11 to add the high-speed rotational speed required for power generation output.

[0054] Figure 7 shows the output characteristics of the generator 15 equipped in the magnetic drive power generation device 50 according to the embodiment, illustrating the relationship between rotational speed and rotational torque required to obtain the desired power generation output. As shown in Figure 7, for example, to obtain a power output of 2400W, the rotational speed input to the generator 15 is 2525 RPM, and the required rotational torque is 11.7 N·m.

[0055] Furthermore, Figure 8 shows the relationship between the gap and repulsive force between opposing magnets of the same poles (stationary magnet 3 and rotating magnet 4) used in the magnetic drive device 40. In other words, Figure 8 shows the strength of the repulsive force with respect to the gap between opposing magnets of the same poles. Both magnets (stationary magnet 3 and rotating magnet 4) have an attractive force of 15 kgf, and their polarities were combined to generate a repulsive force for measurement. When the gap between the magnets is 5 mm, the repulsive force is 6.1 kgf. When the gap is 13 mm, the repulsive force is 0 kgf, and the magnetic force has no effect.

[0056] In the magnetic drive power generation device 50 described above, for example, if the orbital diameter R of the rotating magnet 4 constituting the magnetic drive device 40 is R = 220 mm, and the gap η1 (see Figure 5) between the stationary magnet 3 and the rotating magnet 4 is 5 mm, then the repulsive force = rotational force P, and from Figure 8, the rotational force P = 6.1 kgf. This rotational force P acts simultaneously on two points on the stationary magnet 3 due to the orbital motion of the rotating magnet 4, so the rotational torque Tr is Tr = 6.1 kgf × 2 × turning radius 0.11 m = 13.2 N·m. This rotational torque Tr = 13.2 N·m will be used to achieve the rotational torque of 11.7 N·m shown as the target power output of the generator 15 in Figure 7. Furthermore, by setting the gap η2 between the magnets (see Figure 5) to a gap (13 mm) where the repulsive force is 0 kgf as shown in Figure 8, it is possible to avoid any effect that hinders the rotation of the rotating magnet 4's orbital motion.

[0057] Next, we will explain the control algorithm for the auxiliary motor 11 performed by the control panel 30 of the magnetic drive power generation device 50. Figure 9 is a flowchart showing an example of a control algorithm for the auxiliary motor 11 performed by the control panel 30 of the magnetic drive power generation device 50. This control algorithm is executed repeatedly at predetermined intervals.

[0058] This control algorithm uses the generator 15's rotational speed of 2525 RPM, shown in Figure 7, as the reference rotational speed Z, and controls the rotational speed of the auxiliary motor 11 based on this reference. The rotational force from the magnet unit 44 and the inertial force of the flywheel 7 fixed to the rotating shaft 1 have the effect of causing spontaneous rotational motion, so the rotational speed of the rotating shaft 1 is detected taking these into account, and the rotational speed of the auxiliary motor 11 is controlled accordingly. Although the auxiliary motor 11 rotates at a maximum speed of 5000 RPM, its rated torque is 0.637 N·m, which is 5.4% of the rotational torque 11.7 N·m required for power generation output as shown in Figure 7. However, as described above, the rotational torque Tr required for power generation output can be obtained by the magnetic drive of the power assist mechanism 41, so it does not hinder power generation output.

[0059] First, in step S1, the control panel 30 detects the rotational speed of the rotating shaft 1 based on the detection signal from the photosensor 20 of the rotational speed detection unit 39, and then proceeds to step S2. In step S2, it is determined whether the detected rotational speed was equal to or greater than the reference rotational speed Z × 1.03. If it is determined that the detected rotational speed was equal to or greater than the reference rotational speed Z × 1.03, the process proceeds to step S3. In step S3, a signal is output to turn off the auxiliary motor 11, and then the process returns to step S1. Upon receiving the OFF signal, the auxiliary motor 11 turns off its motor drive.

[0060] On the other hand, if it is determined in step S2 that the detected rotational speed is not equal to or greater than the reference rotational speed Z × 1.03, the process proceeds to step S4, where it is determined whether or not the detected rotational speed is equal to or less than or equal to the reference rotational speed Z × 0.97.

[0061] In step S4, if it is determined that the detected rotational speed is less than or equal to the reference rotational speed Z × 0.97, the process proceeds to step S5. In step S5, a signal is output to turn on the auxiliary motor 11, and then the process returns to step S1. Upon receiving the ON signal, the auxiliary motor 11 turns on its motor drive, and the rotational power of the auxiliary motor 11 is transmitted to the rotating shaft 1 via the first power transmission unit 37, the auxiliary rotating shaft 2, and the cam clutch 9a. The rotational speed of the auxiliary motor 11 is then controlled so that the rotating shaft 1 reaches the reference rotational speed Z.

[0062] On the other hand, if in step S4 it is determined that the detected rotational speed is not less than or equal to the reference rotational speed Z × 0.97, the process proceeds to step S6. In step S6, a signal is output to maintain the drive state (ON or OFF) of the auxiliary motor 11, and then the process returns to step S1. The auxiliary motor 11 receives the hold signal and maintains the motor drive state.

[0063] According to the magnetic drive power generation device 50 of the above embodiment, a drive device that uses magnetism as its main energy source can be realized. By bringing together multiple stationary magnets 3 having an arc shape and multiple circular rotating magnets 4 having a tapered portion 4h with like poles on a circumference of a circle with an orbital diameter R, a repulsive force is generated in the rotational direction of the rotating shaft 1, thereby generating the rotational torque Tr necessary for the generator 15 on the rotating shaft 1.

[0064] In other words, the magnetic drive power generator 50 provides a counter-power to the smooth rotational torque Tr of the generator 15, using a magnetic drive device 40 powered by the repulsive force between the stationary magnet 3 and the rotating magnet 4, thereby creating a no-load state. At the same time, as shown in Figure 7, the power output of the generator 15 is proportional to its rotational speed, so the auxiliary motor 11 is used to set the rotational speed required for the output. Furthermore, since the rotation of the auxiliary motor 11 is in the same direction as the no-load state described above, the power consumed by the auxiliary motor 11 is only about 5-10% of the power output.

[0065] Thus, the power assist mechanism 41 of the magnetic drive device 40 can generate the rotational torque Tr necessary for the power output of the generator 15. On the other hand, in order to obtain a large power output from the generator 15, it is necessary to rotate the generator 15 at high speed at the same time. Therefore, in the magnetic drive power generation device 50, by using an auxiliary motor 11 with a high-speed rotation function in combination, the rotational speed of the rotating shaft 1 can be increased to obtain the desired power output. Furthermore, since the auxiliary motor 11 is not expected to provide the rotational torque Tr necessary for power generation output, as mentioned above, the power required for the auxiliary motor 11 is only about 5-10% of the power generation output. In addition, since the power assist mechanism 41 and the flywheel 7 have a rotational sustaining effect, the auxiliary motor 11 can operate intermittently, saving operating power and extending the lifespan of the auxiliary motor 11.

[0066] In the above embodiment, the case in which the stationary magnet unit 42 is equipped with two stationary magnets 3 was described, but in another configuration example, the stationary magnet unit 42 may be equipped with three or more stationary magnets 3.

[0067] Furthermore, in the above embodiment, an arc shape was used as a preferred shape for the stationary magnet 3, but in another configuration example, a rectangular magnet that can be arranged on the circumference can also be used. In this case as well, it is preferable to form tapered surfaces 3d at both ends of the magnet.

[0068] Figure 10 is a diagram showing the main components of a power assist mechanism 41A according to another embodiment. The power assist mechanism 41 shown in Figure 1 had a single-row structure with only one set of magnet units 44, but the power assist mechanism 41A shown in Figure 10 has a double-row structure, that is, magnet units 44A and 44B, including a stationary magnet unit 42 and a rotating magnet unit 43, are arranged in double rows symmetrically with respect to a plane 1b perpendicular to the rotation axis 1 (center line 1a).

[0069] In the magnetic drive power generation device 50 shown in Figure 1, by replacing the power assist mechanism 41 with the double-row power assist mechanism 41A shown in Figure 10, it becomes possible to double the rotational torque Tr, thereby increasing the output of the generator 15 and expanding its applications.

[0070] Figure 11 is a diagram showing the main components of a magnetic drive power generation device 50A according to another embodiment, where (a) is a partial cross-sectional front view and (b) is a left side view of (a). The magnetic drive power generation device 50A shown in Figure 11 consists of a magnetic drive device 40A which is a double-row mechanism including power assist mechanisms 41A and 41B. The power assist mechanisms 41A and 41B have a double-row structure in which magnet units 44A and 44B are arranged in a double row symmetrically with respect to a plane 25b perpendicular to the output shaft 25.

[0071] The magnetic drive power generation device 50A uses an alternator for the generator 23 and is configured to produce a total power output of 10kW from a double-row power assist mechanism 41A, 41B equipped with double-row magnet units 44A, 44B. Furthermore, the auxiliary motor 24 has an incremental function and is capable of detecting and controlling the rotational speed.

[0072] Each output shaft 25 is provided with double-row magnet units 44A and 44B. One end of each output shaft 25 is supported by a first bearing holder 9A and is also connected to an auxiliary motor 24 via a first power transmission unit 37. The other end of each output shaft 25 is supported by a second bearing holder 10A, to which a flywheel 7 is fixed, and is also connected to a generator 23 via a second power transmission unit 38. Thus, the output shaft 25 is configured as a single shaft, extending from the timing pulley 13 that receives the rotation of the auxiliary motor 24, through the double-row magnet units 44A and 44B and the flywheel 7, to the timing pulley 16 that outputs to the generator 23.

[0073] The dual-stage magnetic drive power generation device 50A shown in Figure 11 can be used as a self-generation unit for electric vehicles (BEVs) and plug-in hybrid vehicles (PHEVs). By using it as such a self-generation unit, the capacity of the lithium-ion battery can be reduced, and the number of times external supplemental charging is reduced, or charging can be done solely by self-generation.

[0074] Figure 12 is a system configuration diagram of a magnetic drive power generation device 50B according to yet another embodiment, and is configured as a system in which multiple magnetic drive power generation devices 50, each equipped with the magnetic drive device 40 shown in Figure 1, are mounted in a storage box 33 (three in Figure 12). The storage box 33 is provided with a power switch 31 and an ON / OFF switch 32 for the magnetic drive power generation device 50B, and an adjuster pad 34 is provided on the bottom surface of the storage box 33.

[0075] The output generated by the multiple magnetic drive power generators 50 that make up the magnetic drive power generation device 50B is aggregated in the control panel 30B and transmitted to the energy storage system 35. Furthermore, the generated output is transmitted from the energy storage system 35 to the distribution board 36, where the power is consumed. Furthermore, some of the power from the energy storage system 35 is returned to the control panel 30B and is configured to power the auxiliary motors 11 of each magnetic drive unit 40. The control panel 30B is equipped with control circuits as a power generation device, including overcurrent protection, leakage protection, and charge control. Since these are known technologies, details are omitted. In addition, the operation of each auxiliary motor 11 is controlled based on the control algorithm shown in Figure 9.

[0076] The magnetic drive power generation device 50B shown in Figure 12 can be applied to a variety of uses by increasing the number of magnetic drive power generation devices 50 installed and integrating them as a system, depending on the purpose of use. For example, it can be used in stores and convenience stores that handle frozen foods, hospitals and clinics where power outages are unacceptable, and sewage treatment plants that operate continuously for 24 hours a day and require a large amount of electricity. The present invention offers several advantages, including unrestricted operating hours for the power generation device, resistance to typhoons and earthquakes due to its independent power source, and the economic benefits of no running costs. Furthermore, it enables the construction of a groundbreaking system that can make a significant contribution to society as a clean energy source that protects the global environment by not generating CO2 or exhaust gases.

[0077] As described above, the magnetic drive power generation devices 50, 50A, and 50B equipped with the magnetic drive devices 40 and 40A according to the embodiment have various advantages. For example, in terms of economy and environmental issues, since they do not use fossil fuels or other energy sources or external electricity as a power source, there are no running costs related to the power source, and they do not generate any CO2. In terms of operation, they are not affected by natural environmental factors such as day and night or weather, and even in the event of disasters such as typhoons or earthquakes, they can operate as an independent power source as long as the device is not destroyed, and are able to withstand disasters. Furthermore, because they can be made into small devices, in the case of power generation devices they can be installed or moved to where electricity is needed, and no power transmission infrastructure is required.

[0078] Furthermore, the magnetic drive power generation devices 50, 50A, and 50B can be used in a variety of applications, from large-scale to small-scale power generation devices, including large-scale power plants, residential power generation systems for household use, power generation devices for electric vehicles, power generation devices in remote areas, and power generation devices for greenhouse cultivation in agriculture. Significant future developments are expected. [Explanation of symbols]

[0079] 1. Axis of rotation 2. Auxiliary rotation axis 3. Fixed magnet 3a Magnetic mounting bracket 3b Mounting bracket 3c T-slot nut 3D tapered surface 4. Rotating side magnet 4a Fixed Boss 4aa recess 4ab insertion hole 4ac flat surface processing section 4ad screw holes 4ae Set Screw 4b Support rod 4c flange bushing 4D positioning washer 4da flat surface processing section 4e Color 4f bolt 4g holder 4h tapered section 5 Rotation Holder 6 Shaft holder 6a Fastening key 6b Set Color 7 Flywheel 8 Positioning support 8a Positioning bolt 9, 9A First bearing holder 9a Cam clutch 9b Oil seal 9c ball bearings 9D Color 10, 10A Second bearing holder 10a Color 10b Collar with O-ring 11 Auxiliary motor 11a Motor Stay 12 Timing pulley 13 Timing pulley 14 Timing belt 15 Generators 16 Timing Pulley 17 Timing Pulley 18 Timing belt 19 Rotation detection plate 19a Fastening key 19b Detection groove 20 Photo recovery 20a Sensor Stay 21. Stand 22 Adjuster Pads 23 Alternator 24 Auxiliary motor 25 Output shaft 30, 30A, 30B control panels 31 Power switch 32. Operation ON / OFF switch 33 Storage Box 34 Adjuster Pads 35 Energy Storage Systems 36 Distribution boards 37. First power transmission section 38. Second power transmission section 39. Rotation speed detection unit 40, 40A Magnetic drive device 41, 41A, 41B Power assist mechanism 42 Fixed side magnet unit 43 Rotating side magnet unit 44, 44A, 44B Magnet Unit 50, 50A, 50B Magnetic Driven Power Generator

Claims

1. A magnetic drive device that uses magnetic force as an energy source, The axis of rotation and A fixed-side magnet unit having a plurality of fixed-side magnets fixed along the circumference of a circle with a predetermined radius centered on the axis of rotation, The power assist mechanism includes a rotating magnet unit having a plurality of rotating magnets arranged to revolve on the circumference via a holder attached to the rotating shaft, A magnetic drive device characterized in that the plurality of stationary magnets and the plurality of rotating magnets are arranged to face each other with a three-dimensional inclination angle such that the repulsive force between like poles generates a rotational force in a predetermined direction in the rotating magnet unit.

2. The magnetic drive device according to claim 1, characterized in that the three-dimensional inclination angle is set such that, on the circumference, the gap between the magnets when the rotating magnet moves away from the stationary magnet is narrower than the gap between the magnets when the rotating magnet approaches the stationary magnet.

3. The magnetic drive device according to claim 1, characterized in that the three-dimensional inclination angle is set to an angle that reduces the inrush resistance load generated when the rotating magnet approaches the stationary magnet on the circumference, and increases the disengagement propulsion load generated when the rotating magnet moves away from the stationary magnet.

4. The opposing surfaces of the plurality of stationary magnets to the plurality of rotating magnets are A first inclination angle for reducing the intrusion resistance load is set in the direction of the center of the circumference, In the circumferential direction, there is a second inclination angle for increasing the detachment propulsion load, The opposing surfaces of the plurality of rotating magnets to the plurality of stationary magnets are, The magnetic drive device according to claim 3, characterized in that it has a third inclination angle for applying a rotational moment in the circumferential direction.

5. The magnetic drive device according to claim 1, characterized in that both ends of the plurality of stationary magnets in the circumferential direction have tapered surfaces that are inclined in a direction away from the plurality of rotating magnets.

6. The magnetic drive device according to claim 1, characterized in that a flywheel is provided on the rotating shaft.

7. The magnetic drive device according to claim 1, characterized in that the magnet unit, which includes the stationary magnet unit and the rotating magnet unit, is arranged in a double row symmetrically with respect to a plane perpendicular to the rotation axis.

8. The magnetic drive device according to claim 1, characterized in that the power assist mechanisms are arranged in parallel.

9. The magnetic drive device according to any one of claims 1 to 8, characterized in that it is provided with an auxiliary motor for transmitting rotational power to the rotating shaft.

10. The system includes a detection unit for detecting the rotation speed of the aforementioned rotating shaft, An auxiliary rotating shaft is attached to the input side of the aforementioned rotating shaft via a cam clutch. The magnetic drive device according to claim 9, characterized in that the auxiliary motor is connected to the auxiliary rotating shaft via a first power transmission unit.

11. Includes the magnetic drive device according to claim 9, A magnetic drive power generation device characterized in that a generator is connected to the output side of the rotating shaft of the magnetic drive device via a second power transmission unit.

12. The aforementioned magnetic drive device includes multiple units, A control panel is provided in each of these magnetic drive devices to control the electricity generated by the generator, The control panel is connected to a power storage system that stores the aforementioned power, The magnetic drive power generation device according to claim 11, characterized in that a portion of the power from the energy storage system is returned to the control panel and used as a power source for the auxiliary motor of the magnetic drive device.

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