Power generation modules, power generation devices, and floor power generation devices

Abstract

The floor power generation device (100) is characterized by comprising: a pedal (20) that sinks when a load is applied and can return to its original state when the load is removed; a magnet (24) that is composed of a permanent magnet; a power generation element (10) that generates electricity by a change in magnetic field, the change in magnetic field being based on the relative displacement between the power generation element and the magnet (24) caused by the sinking and returning of the pedal (20); a rectifier (62) that rectifies the voltage output by the power generation element (10); and an energy storage unit (64) that stores the voltage rectified by the rectifier (62).

Description

Technical Field

[0001] This disclosure relates to power generation modules, power generation devices, and floor power generation devices. Background Technology

[0002] The Big Barkhausen effect is known: when a magnetic body is magnetized under tension or with residual internal stress, the domain walls inside the magnetic body move once, and the magnetization direction reverses in a very short time. When a pickup coil is wound around a magnetic body exhibiting the Big Barkhausen effect, a pulse voltage can be generated in the pickup coil based on the reversal of the magnetic body's magnetization direction.

[0003] The following energy harvesting technology is known: based on the Big Backhausen effect, it uses the energy generated by human activities (such as walking) or mechanical vibrations as energy to generate electricity.

[0004] Patent document 1 discloses a pulse generating device that obtains a pulse voltage from a pickup coil wound around a Wiegand wire (composite magnetic wire) with the large Backhausen effect, which is arranged near the magnet, by means of the change in the magnetic field of a rotating magnet.

[0005] Patent document 2 discloses an apparatus that detects the operation of a switch based on a pulse voltage generated from a pickup coil corresponding to the operation of the switch. The pickup coil is wound around a Wiegand wire located near a magnet whose position is displaced in conjunction with the operation of the switch.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Utility Model Application Publication No. 55-074134

[0009] Patent Document 2: Japanese Utility Model Application Publication No. 55-146621 Summary of the Invention

[0010] The problem that the invention aims to solve

[0011] However, the technologies described in Patent Documents 1 and 2 both have the following problem: only a portion of the magnetic field lines generated by the magnet are guided to the Wiegand wire, which serves as the magnetic core, resulting in poor efficiency in guiding the magnetic field lines from the magnet to the magnetic core.

[0012] The purpose of this disclosure is to provide a power generation module, a power generation device, and a floor power generation device that can increase power generation by improving the guiding efficiency of magnetic field lines generated from a magnet to a magnetic core.

[0013] Methods for solving problems

[0014] The power generation module disclosed herein is characterized by comprising: a plate that sinks when a load is applied and can recover from the sinking state when the load is removed; a magnet portion consisting of a permanent magnet; and a power generation element that generates electricity by means of a change in a magnetic field, the change in the magnetic field being based on the relative displacement between the position of the power generation element and the magnet portion caused by the sinking and recovery of the plate.

[0015] The power generation device disclosed herein is characterized by comprising: a power generation module as described in claim 1; a rectifier section that rectifies the voltage output by the power generation element; and an energy storage section that stores the voltage rectified by the rectifier section.

[0016] The floor power generation device disclosed herein comprises the power generation device according to any one of claims 2 to 7, characterized in that the plate is a floor that floats from the base by means of a spring, sinks when a load is applied to the plate, and recovers from the sinking state by means of the spring when the load is removed, the magnet is provided on the bottom surface of the plate, and the power generation element is provided on the side of the base, the power generation element generates electricity by means of a change in the magnetic field, the change in the magnetic field being based on the relative displacement of the position of the power generation element and the magnet caused by the sinking and recovery of the plate.

[0017] Invention Effects

[0018] According to this disclosure, a power generation module, a power generation device, and a floor power generation device can be provided that can increase power generation by improving the guiding efficiency of magnetic field lines generated from a magnet to a magnetic core. Attached Figure Description

[0019] Figure 1 (a) is a perspective view showing the structure of the power generation element used in the vibration power generation module and vibration power generation device of embodiments 1 and 2. Figure 1 (b) is its side view.

[0020] Figure 2 (a) is a general representation of... Figure 1 The diagram shows a three-dimensional view of the structure of different power generation components. Figure 2 (b) is its side view.

[0021] Figure 3 (a) is an illustration of the flow of magnetic field lines in the power generation element. Figure 3 (b) is the magnetization direction of the magnet part and Figure 3 (a) An illustration of the flow of magnetic field lines in the opposite case.

[0022] Figure 4 This is a top perspective view showing an example of the structure of the floor power generation device according to Embodiment 1.

[0023] Figure 5 (a) is a side view of the floor power generation device of Embodiment 1 in the state where no load is applied on the pedal. Figure 5 (b) is Figure 5 Enlarged view of region 40 enclosed by the dashed line in (a).

[0024] Figure 6 (a) is a side view of the floor power generation device 100 of Embodiment 1 with a load acting on the pedal 20. Figure 6 (b) is Figure 6 Enlarged view of region 42 enclosed by the dashed line in (a).

[0025] Figure 7 This is an explanatory diagram showing the magnetic flux density waveform along the thickness direction of the magnet.

[0026] Figure 8 This is an explanatory diagram showing the relationship between the displacement directions of the first and second magnets and the position of the magnet collector of the power generation element.

[0027] Figure 9 (a) is a schematic diagram showing an example of the waveform of the voltage generated by electromagnetic induction in a coil wound in an iron core without the Big Barkhausen effect and the waveform of the voltage generated only by the Big Barkhausen effect. Figure 9 (b) is a schematic diagram showing an example of the waveform of the voltage generated in the coil by electromagnetic induction and the Big Backhausen effect in Embodiment 1.

[0028] Figure 10 This is a block diagram illustrating an example of the structure of the floor power generation device according to Embodiment 1.

[0029] Figure 11 This is a schematic diagram of the power generation module in Implementation Method 2.

[0030] Figure 12 This is a schematic diagram of a modified example of the power generation module according to Embodiment 2.

[0031] Figure 13 This is a schematic diagram of the power generation module in implementation method 3. Detailed Implementation

[0032] Hereinafter, the power generation module, power generation device, and floor power generation device of embodiments 1 and 2 will be described with reference to the accompanying drawings. The following embodiments are merely examples, and the embodiments can be appropriately combined and modified.

[0033] Figure 1 (a) is a perspective view showing the structure of the power generation module, power generation device, and power generation element 10 used in the floor power generation device according to embodiments 1 and 2. Figure 1(b) is its side view. The power generation element 10 of embodiments 1 and 2 has one or more composite magnetic wires serving as a magnetic core 11 that generates the large Backhausen effect. The power generation element 10 preferably has a magnetizer (soft magnetic material) 13 surrounding the outer periphery of the magnetic core 11. The magnetizer 13, as a first magnetizer 13A and a second magnetizer 13B, is respectively disposed at both ends of the magnetic core 11, and the coil 12 is wound around the magnetic core 11. The soft magnetic material used for the magnetizer 13 is preferably made of steel such as SS400 or S45C, magnetic stainless steel such as SUS430 or SUS440, or high-permeability materials such as permalloy or perminide alloy, but any material with a permeability greater than air (a material with a relative permeability greater than 1) is acceptable. The magnetic core 11 exhibits a magnetostrictive effect, expanding and contracting according to changes in the applied magnetic field.

[0034] Figure 2 (a) is a general representation of... Figure 1 The diagram shows a perspective view of the structures of different power generation elements 70 in the power generation element 10. Figure 2 (b) is its side view. Figure 2 The power generation element 70 shown has a spool shape. In this case, the power generation element 70 is also referred to as a magnetic spool. The coil 12 is wound around the cylindrical magnetic member 131, which is the constricted portion of the magnetic spool. Furthermore, the power generation element 70 can also be... Figure 2 Such materials are made only of soft magnetic materials such as iron, but through methods such as Figure 1 The magnetic core 11, which possesses the ability to generate the large Backhausen effect, improves power generation efficiency.

[0035] use Figure 3 (a) of Figure 1 The flow of magnetic field lines 84 in the power generation element 10 shown will be explained. Figure 3 This is a diagram illustrating the flow of magnetic field lines in the power generation element 10, and it is a side view of the power generation element 10 and the magnet section 24. Figure 3 (a) is an illustration of the flow of magnetic field lines in the power generation element. Figure 3 (b) is the magnetization direction of the magnet part and Figure 3 (a) An illustration of the flow of magnetic field lines in the opposite case. Figure 3 In (a), magnetic field lines 84 emerging from the magnetization surface 80 (N pole) of the magnet section 24, in accordance with the magnetization direction 82, enter the first magnet collector 13A, pass through the magnetic core 11, and exit into the air from the second magnet collector 13B. That is, the magnetic field lines 84 passing through the first magnet collector 13A and the second magnet collector 13B are both oriented in the +Y direction. Furthermore, a portion of the magnetic field lines 84 directly enters the magnetic core 11.

[0036] Next, use Figure 3(b) The magnetization direction 92 of the magnet part 24 is parallel to... Figure 3 The flow of magnetic field lines 94 in the power generation element 10 in the opposite direction to that shown in (a) will be explained. Figure 3 In (b), with Figure 3 In contrast to the case shown in (a), the first magnet 13A faces the magnetization surface 90 (S pole) of the magnet section 24, so the magnetic field lines 94 pass from the second magnet 13B through the magnetic core 11 and via the first magnet 13A to the magnetization surface 90 (S pole). That is, the magnetic field lines 94 passing through both the first magnet 13A and the second magnet 13B are oriented in the -Y direction. Furthermore, a portion of the magnetic field lines 84 directly enters the magnetic core 11. Figure 3 (a) and Figure 3 As shown in (b), the magnetization surfaces 80 and 90 of the magnet section 24 are opposite to the magnet collector 13 of the power generation element 10, and the magnet collector surfaces 13A and 13B are orthogonal to the length direction of the power generation element 10 (the direction of the magnetic lines of force 84 and 94 that help generate electricity in the coil). As a result, the magnetic lines of force 84 and 94 coming out from the magnetization surfaces 80 and 90 of the magnet section 24 take a straight path into the magnet collector 13 and advance in a roughly straight path in the magnetic core 11 in the power generation element 10 and come out from the magnet collector 13 on the opposite side. Therefore, the loss of the magnetic lines of force 84 and 94 coming out from the magnet section 24 is very small, and the most efficient electromagnetic induction power generation can be obtained.

[0037] Implementation Method 1

[0038] Figure 4 This is a top perspective view showing an example of the structure of the floor power generation device 100 according to Embodiment 1. Figure 4 The floor power generation device 100 shown includes: a pedal 20, which floats via a spring 21 supporting the bottom surface 20A; it sinks within a specified range when a load such as a stepping force is applied to the upper surface 20B; and it can return to its sunken state via the spring 21 when the load disappears. Figure 1 and Figure 2 The description includes multiple power generation elements 10 and multiple magnet parts 24. The pedal 20 has supports 22 respectively located near the four corners of the bottom surface 20A. Figure 5 As shown in (a), the support 22 floats in a state where it is inserted into the cylindrical stop 23 fixed to the base 32. When the pedal 20 sinks and returns to its original position, the support 22 moves up and down along the stop 23. The spring 21 may also be less... Figure 4 As shown, it is positioned at the center of the bottom surface 20A of the pedal 20, and between the end of the support 22 and the bottom surface inside the stop 23, or between the outer periphery of the support 22 and the end of the stop 23. Furthermore, the spring 21 can be a leaf spring in addition to a coil spring. Also, the floating mechanism after settling may not be a spring; for example, it may be a floating mechanism utilizing air pressure or hydraulic pressure.

[0039] Figure 5 (a) is a side view of the floor power generation device 100 of Embodiment 1 in a state where no load is applied to the pedal 20. Figure 5 (b) is Figure 5 Enlarged view of region 40 enclosed by the dashed line in (a).

[0040] like Figure 5 (a) and Figure 5 As shown in (b), on the bottom surface 20A of the pedal 20, a first magnet 25 and a second magnet 26, which are permanent magnets, are respectively disposed opposite to the magnet collectors 13 disposed at both ends of the power generation element 10, forming a magnet part 24. The magnetized surfaces of the first magnet 25 and the second magnet 26 are positioned opposite the magnet collectors 13 with gaps 29. Figure 5 (b) and Figure 8 As shown, when the gap 29 between the magnetized surfaces of the first magnet 25 and the second magnet 26 and the magnet collector 13 is narrower, the magnetic force acting on the magnetic core 11 increases, and the power generation increases. Figure 7 This is a schematic diagram showing an example of the magnetic flux density waveform of the magnet section 24 when the gap 29 is 0.5 mm, 1 mm, and 2 mm. (See diagram for example.) Figure 7 As shown, among the conditions of gap 29 being 0.5mm, 1mm, and 2mm, the magnetic flux density is the largest when the gap 29 is 0.5mm. However, due to the magnetic attraction between the first magnet 25 and the second magnet 26 and the magnet collector 13, the smallest gap 29 that can actually be assembled is about 1mm.

[0041] Figure 7 The magnetic flux density waveform along the magnet thickness direction, i.e., the direction of magnetic moment 25M or 26M, is shown, exhibiting two peaks on the positive side of the magnetic flux density. With a gap 29 of 1 mm, the peak interval is approximately 6 mm, therefore the width of the most efficient magnet collector 13 is 6 mm. With a gap 29 of 1 mm, to obtain more magnetic force, for example, by setting the magnet collector 13 to a width of approximately 8 mm, more magnetic field lines 52 can be concentrated in the magnetic core 11. Theoretically, approximately 90% of the magnetic flux of the magnet portion 24 can be guided to the magnetic core 11.

[0042] The first magnet 25 and the second magnet 26, as indicated by arrow-shaped magnetic moments 25M and 26M respectively, are mounted at predetermined intervals on the magnetic yoke 27 suspended from the bottom surface 20A of the pedal 20, in the vertical movement direction of the pedal 20 (the direction of relative displacement of the magnetizer 13), with equal magnetic force and opposite magnetic poles (directions of magnetization). The predetermined interval in the vertical movement direction preferably corresponds to the length by which the pedal 20 sinks when stepped on. Figure 5 of (a) Figure 6In (a), three first magnets 25 and three second magnets 26 are alternately mounted on the magnetic yoke 27 in the vertical movement direction of the pedal 20. Multiple power generation elements 10 are mounted on a platform 15 disposed on the base 32. The platform 15... Figure 5 The side view of (a) viewed from the left and right is, for example, E-shaped, and a power generation element 10 is placed in a recess cut out laterally like the E. A magnet portion 24, including a first magnet 25 and a second magnet 26, is arranged correspondingly to the power generation elements 10 provided thereon. By providing multiple power generation elements 10, the power generation efficiency is improved. In Embodiment 1, in Figure 4 and Figure 5 In the shown state, viewed from the top of the pedal 20, 40 power generation elements 10 are installed. Multiplying this by 3 layers in the vertical movement direction of the pedal 20, a total of 120 power generation elements 10 are installed. Even if the power output of each power generation element 10 is weak, by storing the power obtained from the multiple power generation elements 10 in the energy storage section described later, power sufficient to drive the corresponding electrical load can be obtained. Furthermore, the magnetic yoke 27 is made of a soft magnetic material such as iron. In Embodiment 1, the magnetic yoke 27, to which the first magnet 25 and the second magnet 26 are fixed, is magnetized by the respective magnetic forces of the first magnet 25 and the second magnet 26, thus increasing the magnetic force acting on the power generation elements 10.

[0043] The width W1 of the magnet collector 13 in the power generation element 10 in the direction of relative displacement with respect to the position of the magnet section 24 caused by the sinking and returning of the pedal 20 is approximately 60% of the widths W2 and W3 of the magnetized surfaces of the first magnet 25 and the second magnet 26 of the magnet section 24 opposite to the magnet collector 13 in the direction of relative displacement, with an upper limit of 80%. The magnet section 24 requires at least two magnets, the first magnet 25 and the second magnet 26. When the spacing between the first magnet 25 and the second magnet 26 is narrow, power generation can be achieved with a smaller amount of magnet displacement. If the width of the magnet collector 13 in the direction of relative displacement is wide, the gap 28 between the first magnet 25 and the second magnet 26 needs to be increased. Therefore, if the width exceeds the optimal width (6 mm) mentioned above, it is disadvantageous in terms of magnet spacing. Therefore, in this embodiment, from the viewpoint of balancing magnetic force and magnet spacing, the width of the magnet collector 13 is preferably 60% of the width of the magnet, with an upper limit of 80%.

[0044] Preferably, the gap 28 between the first magnet 25 and the second magnet 26 is made of a non-magnetic material, and the width of the gap 28 in the direction of relative displacement is greater than the width of the magnet collector 13 in the direction of relative displacement. The gap 28 can be an air gap or filled with a non-magnetic material such as copper, aluminum, or synthetic resin. If the width of the magnet collector 13 in the direction of relative displacement is wider, then when the magnet collector 13 crosses the first magnet 25 and the second magnet 26 during relative displacement, the magnet collector 13 concentrates both the upward magnetic field lines 52 of the first magnet 25 and the downward magnetic field lines 52 of the second magnet 26. Within the magnetic core 11, the upward and downward magnetic field lines 52 cancel each other out, and the change in magnetic flux within the magnetic core 11 becomes sluggish. Figure 5 (b) and Figure 8 As shown, if the gap 28 between the first magnet 25 and the second magnet 26 is set to be the same as or greater than the width of the magnet collector 13, the possibility of the magnet collector 13 crossing the first magnet 25 and the second magnet 26 can be suppressed, and the internal magnetic flux change of the magnetic core 11 can be increased.

[0045] In such Figure 5 (a) and Figure 5 In the state shown in (b) where the pedal 20 is not depressed, the power generation element 10 is installed such that the magnetizing bodies 13 at both ends of the power generation element 10 are respectively opposed to the ends (magnetized surfaces) of either the first magnet 25 or the second magnet 26. In Embodiment 1, when one magnetizing body 13 of the power generation element 10 is opposed to the end of the first magnet 25, the other magnetizing body 13 of the power generation element 10 is installed such that it is opposed to the end of the first magnet 25 of the magnet portion 24 disposed across the stand 15. Furthermore, when one magnetizing body 13 of the power generation element 10 is opposed to the end of the second magnet 26, the other magnetizing body 13 of the power generation element 10 is installed such that it is opposed to the end of the second magnet 26 of the magnet portion 24 disposed across the stand 15. Therefore, when the pedal 20 is not depressed, the power generation element 10 is arranged in series with the first magnet 25 or the second magnet 26, such as the first magnet 25-power generation element 10-first magnet 25 or the second magnet 26-power generation element 10-second magnet 26. This allows the magnetic field lines 52 generated from one of the first magnets 25 or 26 to reach the other first magnet 25 or 26 via the magnetic core 11 of the power generation element 10. As a result, the magnetic field lines 52 generated from the first magnet 25 or 26 can be efficiently guided to the magnetic core 11.

[0046] As described later, if a load is applied to the upper surface 20B of the pedal 20, the magnet portion 24, including the first magnet 25 and the second magnet 26, sinks together with the pedal 20. As a result, the magnets opposite to the magnetizer 13 of the power generation element 10 switch, for example, from the first magnet 25 to the second magnet 26, thus reversing the magnetic field applied to the magnetic core 11 of the power generation element 10. This reversal of the magnetic field manifests a large Backhausen effect, where the magnetization direction inside the magnetic core 11 is reversed, and electromagnetic induction is generated in the coil 12, producing an electromagnetic field similar to that generated in the coil 12 wound around the power generation element 10. Figure 9 The pulse voltage of the waveform shown in (b).

[0047] like Figure 5 As shown in (a), the unloaded pedal 20 is in a state of slightly floating from the floor 30 around the floor power generation device 100. Therefore, in Embodiment 1, by chamfering the edges of the four corners of the pedal 20, pedestrians are prevented from tripping over the pedal 20.

[0048] Figure 6 (a) is a side view of the floor power generation device 100 of Embodiment 1 with a load acting on the pedal 20. Figure 6 (b) is Figure 6 Enlarged view of region 42 enclosed by the dashed line in (a).

[0049] like Figure 6 (a) and Figure 6 As shown in (b), when a load is applied to the pedal 20, the magnet section 24 sinks together with the pedal 20. As a result, the magnets of the magnet section 24, which are respectively opposed to the magnet collectors 13 of the multiple power generation elements 10, switch from, for example, the first magnet 25 to the second magnet 26. Therefore, the magnetic field applied to the magnetic core 11 of the power generation element 10 is reversed, generating a pulse voltage in the coil 12 based on the Big Backhausen effect and electromagnetic induction caused by the reversal of the magnetization direction within the magnetic core 11. When the load is no longer applied to the pedal 20, the magnet section 24 returns to its original position. Figure 5 (a) and Figure 5 The state shown in (b) is as follows. As a result, the magnets opposite to the magnetizer 13 of the power generation element 10 are switched, for example, from the second magnet 26 to the first magnet 25. Therefore, the magnetic field applied to the magnetic core 11 of the power generation element 10 is reversed, and a pulse voltage with the opposite polarity to the pulse voltage when the first magnet 25 and the second magnet 26 sink is generated in the coil 12.

[0050] Figure 8 This is an explanatory diagram showing the relationship between the displacement direction 50 of the first magnet 25 and the second magnet 26 and the position of the magnet collector 13 of the power generation element 10. Figure 8 The displacement direction 50 shown is as follows Figure 5 and Figure 6The figure shows the change in the relative position of the magnet 24 relative to the power generation element 10 due to the load acting on the pedal 20.

[0051] In Embodiment 1, the magnetizer 13 of the power generation element 10 faces the magnetization face of either the first magnet 25 or the second magnet 26, thereby allowing most of the magnetic field lines 52 generated from the first magnet 25 or the second magnet 26 to propagate to the magnetic core 11 via the magnetizer 13 facing the magnetization face. As a result, the magnetic field lines 52 can be efficiently guided to the magnetic core 11 via the magnetizer 13. Furthermore, the magnetic field lines 52 generated from the first magnet 25 or the second magnet 26 propagate along the magnetic core 11 through the power generation element 10. When the magnet portion 24 moves along the displacement direction 50 due to a change in the load applied to the pedal 20, the magnet facing the magnetizer 13 of the power generation element 10, for example, switches from the first magnet 25 to the second magnet 26, and the direction of the magnetic field lines 52 acting on the magnetizer 13 is reversed. As a result, a voltage is generated in the coil 12 due to the Big Backhausen effect and electromagnetic induction.

[0052] Figure 9 (a) is a schematic diagram showing an example of a voltage waveform 140 generated by electromagnetic induction in a coil 12 wound in an iron core that does not have the Big Backhausen effect and a voltage waveform 141 generated only by the Big Backhausen effect. Figure 9 In (a), waveform 140, representing the voltage generated in a coil wound around an iron core without the large Backhausen effect, shows a wide pulse width and a large amount of charge generated, but the peak voltage is as low as about 5V. In contrast, waveform 141, representing the voltage generated solely through the large Backhausen effect, has a peak voltage as high as 15-20V, but a pulse width as narrow as less than 80μS and a small amount of charge.

[0053] Figure 9 (b) is a schematic diagram showing an example of the waveform 142 of the voltage generated in coil 12 by electromagnetic induction and the Big Barkhausen effect in Embodiment 1. In Embodiment 1, by superimposing a voltage waveform with a significant peak voltage generated by the Big Barkhausen effect onto a voltage waveform with a large amount of charge generated by electromagnetic induction, a high voltage of approximately 20 to 25 V can be obtained. For efficient charging of the capacitor, both a potential difference and a charge are required; the power generation device of Embodiment 1 is suitable for charging the capacitor.

[0054] Figure 10 This is a block diagram illustrating an example of the structure of the floor power generation device 100 according to Embodiment 1. The power generation module 60 includes a power generation element 10 and a magnet 24. Voltage is generated in the coil 12 by the displacement of the magnet 24 relative to the position of the power generation element 10. The voltage generated in the coil 12 is as follows: Figure 9As shown in (b), the pulses are positive and negative, and are therefore rectified by the rectifier 62 in full wave. In embodiment 1, the rectifier 62 is provided in each of the power generation elements 10 constituting the power generation module 60. The rectifier 62 may also perform half wave rectification instead of full wave rectification.

[0055] The voltage after full-wave rectification by the rectifier 62 is stored in the energy storage section 64. The energy storage section 64 is a rechargeable secondary battery or capacitor, etc. The waveform of the voltage output by the power generation element 10 is pulsed with significant peaks due to the large Backhausen effect. Therefore, in cases where the voltage may exceed the allowable voltage for energy storage of secondary batteries such as lithium-ion batteries, nickel-metal hydride batteries, or nickel-cadmium batteries, a capacitor is used in the energy storage section 64.

[0056] By supplying the electricity stored in the energy storage unit 64 to electrical loads such as lighting, the floor power generation unit 100 can be used as an emergency power source during disasters or as an independent power source in areas without wires.

[0057] As explained above, according to Embodiment 1, the floor power generation device 100, in addition to the magnetization reversal in the magnetic core 11 based on the Big Backhausen effect, guides the magnetic lines of force 52 generated from the magnet section 24 to the magnetic core 11 via the magnet collector 13 in order to actively utilize the magnetic core 11 as an electromagnetic induction core. As a result, in addition to the Big Backhausen effect, by maximizing the electromagnetic induction component, it is possible to increase the power generation.

[0058] Furthermore, in Embodiment 1, the floor power generation device 100 has a magnet 24 mounted on the pedal 20 and a power generation element 10 mounted on the base 32 side. The positive and negative pulse voltages generated by the relative displacement between the magnet 24 and the power generation element 10 are rectified and stored in the energy storage unit 64. By utilizing the energy storage unit 64, which stores electricity, as an emergency power source during disasters or as an independent power source in areas without wires, it can contribute to disaster relief efforts. The pedal 20 is not limited to the floor; by being installed on the seat of a chair, a step, or various stairs, it can be used as a power generation device other than the floor power generation device 100.

[0059] The relative displacement between the magnet 24 and the power generation element 10 can utilize not only the load acting on the pedal 20 when a person walks, but also the load accompanying the movement of vehicles. For example, the pedal 20 of the floor power generation device 100 can be installed on the driveway to generate electricity through vehicle passage. Furthermore, the floor power generation device 100 of Embodiment 1 can be installed on the ground at the entrance and exit of a parking lot to use the electricity generated by vehicles entering and exiting the parking lot as a backup power source for the parking lot equipment.

[0060] By utilizing human walking or other means to achieve the relative displacement between the magnet 24 and the power generation element 10 required for power generation, carbon-neutral power generation without the consumption of fossil fuels can be realized.

[0061] In Embodiment 1, a magnet 24 is provided on the pedal 20 side and a power generation element 10 is provided on the base 32 side. However, it is also possible to provide the power generation element 10 on the pedal 20 side and the magnet 24 on the base 32 side in the opposite way.

[0062] In Embodiment 1, a magnet collector 13 that efficiently guides the magnetic lines of force 52 generated from the magnet section 24 is provided on the power generation element 10, but it is not limited to this. It is also possible to have a structure without the magnet collector 13, but only a magnetic core 11 and a coil 12. Alternatively, it is possible to have a structure where the magnetization surface of the magnet section 24 is not opposite to the magnet collector 13. Furthermore, it is also possible to have a component integrally formed in the shape of a spool, without the magnetic core 11, but only made of a soft magnetic material such as iron.

[0063] Implementation Method 2

[0064] Next, Embodiment 2 will be described. Embodiment 2 considers the magnetization directions 430 and 432 of the magnet 410. Figure 11 as well as Figure 12 These are the two methods. Figure 11 This indicates the case where the magnetization direction 430 of magnet 410 is along its length. Figure 12 This indicates the case where the magnetization direction 432 of magnet 410 is the thickness direction of magnet 410.

[0065] Figure 11This diagram illustrates a structural example where the magnetization surface 410A of magnet 410 and the collecting surface 110A of power generation element 110 are not opposite each other. Utilizing the property that magnetic field lines are incident perpendicularly on the surface of a magnetic body, the collecting surfaces 110A and 110B are perpendicular to the length direction (direction of magnetic field line flow) of the magnetic core 111. Magnetic field lines incident on the collecting surface 110A are directly and straightly guided to the magnetic core 111. The magnetization direction of magnet 410 is the length direction (left-right direction in the diagram), and the left side of magnet 410 becomes the magnetization surface 410A with the N pole. Magnetic field lines 420 emerging from the magnetization surface 410A circle around magnet 410 and enter the S pole of magnetization surface 410B. At this time, the power generation element 110 is located above the magnet 410, and the magnetic field lines around the magnet 410 converge at the magnetic collecting surface 110A, obtaining a path through the magnetic core 111 from the magnetic collecting surface 110B to the magnetized surface 410B of the magnet 410. In this case, since the magnetic collecting body 112 only collects a portion of the magnetic field lines from the magnetized surface 410A and guides them to the power generation element 110, the efficiency of electromagnetic induction is worse compared to Embodiment 1. However, if the power consumption of the electrical load connected to the power generation device of Embodiment 2 is very small, even the inefficient electromagnetic induction component can obtain operable power, which has the advantage of a high degree of freedom in the arrangement of the power generation element relative to the magnet 410.

[0066] Variations of Implementation Method 2

[0067] Figure 12 This is a variation of Embodiment 2, where the magnetizing surface of the magnet 410 is positioned opposite the magnetizing surface 110A of the power generation element 110 to the side of the magnetizer 112. The magnetization direction of the magnet 410 is the thickness direction (vertical direction in the figure). The upper left surface of the magnet 410 becomes the magnetizing surface 410A (N pole), and the upper right surface becomes the magnetizing surface 410B (S pole). Magnetic lines 422 emanating from the magnetizing surface 410A converge at the magnetizing surface 110A located on the side of the magnetizer 112, forming a path through the magnetic core 111 from the magnetizing surface 110B to the magnetizing surface 410B of the magnet 410.

[0068] In this situation, the following two issues arise.

[0069] Problem (1): Since the magnetic collecting surface 110A is parallel to the length direction of the magnetic core 111 (the direction of the magnetic lines of force that help generate electricity in the coil), the magnetic lines of force entering from the magnetic collecting surface 110A need to be guided into the magnetic core 111 in a manner that bends at approximately 90 degrees. Therefore, some of the magnetic lines of force are not completely bent within the magnetic collecting body 112, but instead take a part of a straight path that leaks out into the air (dashed line in the figure), thereby reducing the efficiency of electromagnetic induction.

[0070] Topic (2): In such Figure 1 When a magnetic core 111 made of multiple composite magnetic wires is used, magnetic lines of force easily enter the composite magnetic wires located on the side close to the magnet 410, while magnetic lines of force have difficulty entering the composite magnetic wires located on the side far from the magnet 410. As a result, a deviation in internal magnetic flux occurs between the multiple composite magnetic wires, and the efficiency of electromagnetic induction deteriorates.

[0071] Furthermore, as in Embodiment 1, if the magnetization surface 410A of the magnet 410 is opposite to the magnetic collecting surface 110A of the power generation element 110, and the magnetic collecting surface 110A is orthogonal to the length direction of the power generation element 110 (the direction of the magnetic lines of force that facilitate power generation in the coil), then the magnetic lines of force coming out from the magnetization surface 410A of the magnet 410 will enter the magnetic collecting surface 110A in a straight line, travel directly and straight within the power generation element 110, and exit from the magnetic collecting surface 110B on the opposite side. Therefore, the loss of the magnetic lines of force coming out from the magnet 410 is very small, which is the preferred method for obtaining the most efficient electromagnetic induction power generation.

[0072] Implementation Method 3

[0073] Next, implementation method 3 will be described. Figure 13 This is a perspective view that schematically illustrates the structure of the power generation module in Embodiment 3. Figure 13 In the power generation element 110, the magnetic core 111, which serves as the winding coil 120, uses composite magnetic wire that generates the large Backhausen effect, but unlike the previous method, a magnet collector 112 is not used. Figure 1 The power generation element 10 shown is different.

[0074] In this structure, since it lacks a magnet collector 112, the power generation efficiency is similar to... Figure 11 or Figure 12 While it is worse than the previous method, if the power consumption of the electrical load connected to the power generation device of embodiment 3 is very small, even the inefficient electromagnetic induction component can obtain operable power. Therefore, since the number of components is reduced, the power generation module can be constructed cheaply.

[0075] Label Explanation

[0076] 10: Power generation element; 11: Magnetic core; 12: Coil; 13: Magnet collector; 15: Stand; 21: Spring; 22: Support; 23: Stop; 24: Magnet part; 25: First magnet; 25M: Magnetic moment; 26: Second magnet; 26M: Magnetic moment; 27: Magnetic yoke; 28: Gap; 29: Void; 60: Power generation module; 62: Rectifier part; 64: Energy storage part; 70: Power generation element; 100: Floor power generation device.

Claims

1. A power generation module, comprising: A plate that sinks when a load is applied and can recover from the sunken state when the load is removed; The magnetic part, which is composed of permanent magnets; and A power generation element that generates electricity through a change in a magnetic field, the change in which is based on the relative displacement between the power generation element and the magnet caused by the sinking and restoring of the plate.

2. A power generation device comprising: The power generation module as described in claim 1; A rectifier section that rectifies the voltage output by the power generation element; and The energy storage unit stores the voltage rectified by the rectifier unit.

3. The power generation device according to claim 2, characterized in that, The magnet section includes a first magnet and a second magnet, respectively arranged with their magnetic poles facing opposite directions. In the power generation element, at both ends of the magnetic core of the wound coil along its length, there are magnetizing bodies composed of soft magnetic materials facing the magnetization surface of either the first magnet or the second magnet. Thus, the magnetic lines of force of either the first magnet or the second magnet are concentrated on the magnetic core via the magnetizing bodies. And through the relative displacement, the magnetization surface facing the magnetizing body switches from the first magnet to the second magnet, or from the second magnet to the first magnet.

4. The power generation device according to claim 3, characterized in that, Two magnets are provided relative to one power generation element, each facing a magnet collector disposed at one of the two ends of the power generation element. The magnets are arranged such that the magnetized surfaces of the first magnet and the second magnet correspond to the direction of the relative displacement, and the magnetized surfaces of the first magnet and the second magnet that are not opposite to the magnet collector are fixed to the magnetic body yoke.

5. The power generation device according to claim 3, wherein, The magnetic core and the magnet are integrally formed in the shape of a spool.

6. The power generation device according to claim 3, characterized in that, The width of the magnet in the direction of relative displacement is 60% of the width of the magnetized surface of the magnet part opposite the magnet in the direction of relative displacement.

7. The power generation device according to claim 3, characterized in that, There is a non-magnetic gap between the first magnet and the second magnet, the gap being greater than or equal to the width of the magnet in the direction of the relative displacement.

8. The power generation device according to any one of claims 3 to 7, characterized in that, The magnetic core is composed of one or more composite magnetic wires that generate the large Backhausen effect.

9. A floor-mounted power generation device comprising the power generation device according to any one of claims 2 to 7, characterized in that, The plate is a floor that floats from the base by springs. When a load is applied to the plate, it sinks, and when the load is removed, it returns to its original position by the springs. A magnet is provided on the bottom surface of the plate, and a power generation element is provided on the side of the base. The power generation element generates electricity by changing the magnetic field. The change in the magnetic field is based on the relative displacement between the power generation element and the magnet caused by the sinking and returning of the plate.

10. The floor-mounted power generation device according to claim 9, wherein, The edges of the plate are chamfered.

11. A floor-mounted power generation device comprising the power generation device of claim 8, characterized in that, The plate is a floor that floats from the base by springs. When a load is applied to the plate, it sinks, and when the load is removed, it returns to its original position by the springs. A magnet is provided on the bottom surface of the plate, and a power generation element is provided on the side of the base. The power generation element generates electricity by changing the magnetic field. The change in the magnetic field is based on the relative displacement between the power generation element and the magnet caused by the sinking and returning of the plate.

12. The floor-mounted power generation device according to claim 11, wherein, The edges of the plate are chamfered.

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