Power generation module and power generation device

Abstract

A power generation module (10) includes: a power generation element part (100) having a magnetic body (110) with a first flux-concentrating surface (110a) and a second flux-concentrating surface (110b), and a coil (120) wound around the magnetic body (110); and a magnet part (200) having a first magnet (210) with a first magnetized surface (210a) of a first polarity and a second magnet (220) with a second magnetized surface (220a) of a second polarity that is the opposite of the first polarity, wherein the power generation element part (100) and / or the magnet part (200) are installed so as to be movable along a guide member (300), and the power generation element part (100) and the magnet part (200) are installed so that during the movement, there is a first state in which the first flux-concentrating surface (110a) and the first magnetized surface (210a) face each other and a second state in which the first flux-concentrating surface (110a) and the second magnetized surface (220a) face each other.

Description

Power generation module and power generation device

[0001] The present disclosure relates to a power generation module and a power generation device.

[0002] A device is known that includes a power generating element unit that includes a composite magnetic wire (also called a "Wiegand wire") as a magnetic material that generates a large Barkhausen effect and a coil wound around the composite magnetic wire, and a magnet that moves relatively to the power generating element unit.

[0003] For example, Patent Document 1 proposes a pulse generator using a magnetic material that generates the large Barkhausen effect, and Patent Document 2 proposes a power generator using a magnetic material that generates the large Barkhausen effect.

[0004] Japanese Utility Model Application Publication No. 55-074134 International Publication No. 2023 / 079838

[0005] In a power generating device using the technology described in the above document, some of the magnetic lines of force generated from the magnet are induced into the composite magnetic wire, but the induction efficiency of the magnetic lines of force generated from the magnet into the magnetic core is low, resulting in a problem of low power generation efficiency.

[0006] An object of the present disclosure is to provide a power generation module with high power generation efficiency and a power generation device including the power generation module.

[0007] The power generation module of the present disclosure comprises a power generation element section having a magnetic body having a first magnetic collecting surface and a second magnetic collecting surface and a coil wound around the magnetic body, and a magnet section having a first magnet having a first magnetized surface of a first polarity and a second magnet having a second magnetized surface of a second polarity opposite to the first polarity, wherein at least one of the power generation element section and the magnet section is installed so as to be able to move along a guide member, and the power generation element section and the magnet section are installed so as to exist during the movement in a first state in which the first magnetic collecting surface and the first magnetized surface face each other and a second state in which the first magnetic collecting surface and the second magnetized surface face each other.

[0008] The power generation device of the present disclosure is characterized by having the above-mentioned power generation module, a rectifier that rectifies positive and negative power generation pulses generated in the coil of the power generation module, and a storage unit that stores the power of the power generation pulses output from the rectifier.

[0009] According to the power generation module or power generation device of the present disclosure, high power generation efficiency can be achieved.

[0010] 1 is a perspective view schematically showing the configuration of a power generation module according to embodiment 1 (when the first magnetic collecting surface of the power generation element unit faces the first magnetized surface of the first magnet). FIG. 2 is a perspective view schematically showing the configuration of a power generation module according to embodiment 1 (when the first magnetic collecting surface of the power generation element unit faces the second magnetized surface of the second magnet). FIG. 3 is a diagram showing the flow of magnetic field lines in FIG. 1. FIG. 4 is a diagram showing the flow of magnetic field lines in FIG. 2. (A) and (B) are a perspective view and a side view schematically showing the configuration of a power generation element unit. (A) and (B) are a perspective view and a side view schematically showing the configuration of another power generation element unit. FIG. 4 is a diagram showing typical magnetic field lines when the first magnetic collecting surface of the power generation element unit faces the first magnetized surface of the first magnet. FIG. 5 is a graph showing the relationship between the position of a magnet [mm] and the magnetic flux density [mT] in a magnetic body. FIG. 6 is a block diagram showing the configuration of a power generation device including a power generation module according to embodiment 1. 1 is a diagram showing an induced voltage waveform (dashed line) when an iron core is used as the magnetic body, and an induced voltage waveform (solid line) when a composite magnetic wire that generates a large Barkhausen effect is used as the magnetic body. 2 is a diagram showing an induced voltage waveform when a composite magnetic wire and a magnetic collector (iron core) are used as the magnetic body. 3 is a perspective view schematically showing the configuration of a power generation module according to a second embodiment (when the first magnetic collecting surface of the power generation element unit faces the first magnetic surface of the first magnet). 4 is a perspective view schematically showing the configuration of a power generation module according to a third embodiment (when the first magnetic collecting surface of the power generation element unit faces the first magnetic surface of the first magnet, and the second magnetic collecting surface faces the third magnetic surface of the third magnet). 5 is a perspective view schematically showing the configuration of a power generation module according to a third embodiment (when the first magnetic collecting surface of the power generation element unit faces the second magnetic surface of the second magnet, and the second magnetic collecting surface faces the fourth magnetic surface of the fourth magnet). 10A is an oblique view showing a schematic configuration of a power generation module according to embodiment 4, and FIG. 10B is an oblique view showing a schematic internal configuration of the power generation module according to embodiment 4. FIG.

[0011] The following describes a power generation module and a power generation device according to an embodiment, with reference to the drawings. The following embodiments are merely examples, and the embodiments can be appropriately combined and modified. In the drawings, components having the same or similar functions are designated by the same reference numerals.

[0012] First Embodiment Fig. 1 is a perspective view that schematically shows the configuration of a power generation module 10 according to the first embodiment (when the first magnetic flux collecting surface 110a of the power generation element section 100 faces the first magnetized surface 210a of the first magnet 210). Fig. 2 is a perspective view that schematically shows the configuration of the power generation module 10 (when the first magnetic flux collecting surface 110a of the power generation element section 100 faces the second magnetized surface 220a of the second magnet 220). The power generation module 10 has the power generation element section 100 and a magnet section 200. The power generation element section 100 and the magnet section 200 are provided so that their relative positions can be changed.

[0013] The power generating element section 100 includes a magnetic body 110 having a first magnetic flux collecting surface 110 a and a second magnetic flux collecting surface 110 b , and a coil 120 wound around the magnetic body 110 .

[0014] The flow of magnetic field lines in Fig. 1 will be explained using Fig. 3. In Fig. 3, magnetic field lines emerging from magnetized surface 210a (north pole) of magnet 210 enter first magnetic field collecting surface 110a, pass through magnetic body 110, and emerge into the air from second magnetic field collecting surface 110b. In other words, the magnetic field lines passing through first magnetic field collecting surface 110a and second magnetic field collecting surface 110b both point in the +Y direction.

[0015] Next, the flow of the magnetic field lines in Fig. 2 will be described with reference to Fig. 4. In Fig. 4, conversely, the first magnetic field collecting surface 110a faces the magnetized surface 210a (south pole) of the magnet 220, and therefore the magnetic field lines pass from the second magnetic field collecting surface 110b through the magnetic body 110 and toward the magnetized surface 210a (south pole) via the first magnetic field collecting surface 110a. In other words, the magnetic field lines passing through the first magnetic field collecting surface 110a and the second magnetic field collecting surface 110b are both oriented in the -Y direction.

[0016] In this way, because the magnetized surface of the magnet and the magnetized surface of the magnetic body face each other and the longitudinal direction of the magnetized surface and the magnetic body (the direction of the magnetic field lines that contribute to power generation in the coil) are perpendicular to each other, the magnetic field lines emerging from the magnetized surface of the magnet enter the magnetized surface in a straight line, travel almost straight through the magnetic body, and emerge from the magnetized surface on the opposite side, which means that there is very little loss in the magnetic field lines emerging from the magnet, resulting in the most efficient electromagnetic induction power generation.

[0017] The magnet unit 200 has a first magnet 210 having a first magnetized surface 210a of a first polarity and a second magnet 220 having a second magnetized surface 220a of a second polarity opposite to the first polarity. In Figures 1 and 2, the first polarity is the north pole and the second polarity is the south pole. However, the first polarity may be the south pole and the second polarity may be the north pole.

[0018] At least one of the power generation element unit 100 and the magnet unit 200 is installed so as to be movable (i.e., displaceable) along the guide member 300. The movement along the guide member 300 is, for example, a linear movement parallel to the first magnetized surface 210a of the first magnet 210 and the second magnetized surface 220a of the second magnet 220. In FIGS. 1 and 2 , the magnet unit 200 moves along the guide member 300. However, instead of or in addition to such movement, the power generation element unit 100 may move along a guide member parallel to the guide member 300. The guide member 300 may include a drive shaft, a rail, a rotary shaft, a linear shaft, etc. The guide member 300 may be attached to, for example, a guide rail parallel to any of the X, Y, and Z axes of a five-axis machining center, a window sash rail, a linear spring, etc. The guide member 300 may be part of a device (e.g., a machining center) having a movement mechanism, or may be part of the power generation module 10. In other words, the power generation module 10 may include the power generation element section 100 , the magnet section 200 , and the guide member 300 .

[0019] The power generation module 10 is configured so that, during the movement of the magnet section 200, there are two states: a first state (i.e., the state shown in FIG. 1 ) in which the first magnetization surface 110a of the magnetic body 110 and the first magnetized surface 210a of the first magnet 210 face each other; and a second state (e.g., the state shown in FIG. 2 ) in which the first magnetization surface 110a of the magnetic body 110 and the second magnetized surface 220a of the second magnet 220 face each other. The first magnetization surface 110a of the magnetic body 110 is a planar magnetic pole surface, and the first magnetization surface 210a of the first magnet 210 is also a planar magnetic pole surface. In the first state (i.e., the state shown in FIG. 1 ), the first magnetization surface 110a and the first magnetized surface 210a are parallel and close to each other with a small gap between them, i.e., the surfaces face each other, so that the magnetic flux of the first magnet 210 can be efficiently guided to the magnetic body 110. Furthermore, the first magnetic collecting surface 110a of the magnetic body 110 is a planar magnetic pole surface, and the second magnetized surface 220a of the second magnet 220 is also a planar magnetic pole surface. In the second state (i.e., the state shown in FIG. 2 ), the first magnetic collecting surface 110a and the second magnetized surface 220a are parallel and close to each other with a small gap between them, i.e., the surfaces face each other, so that the magnetic flux of the second magnet 220 can be efficiently guided to the magnetic body 110. The magnet unit 200 is moved, for example, by the driving force of a processing machine (machine tool). Alternatively, the magnet unit 200 is moved by human force (for example, the force used to open or close a window).

[0020] Fig. 5(A) is a perspective view schematically showing a certain configuration of the power generation element unit 100, and Fig. 5(B) is a side view thereof. The magnetic body 110 has a composite magnetic wire that is a magnetic core 111 that generates a large Barkhausen effect in response to changes in magnetic flux. The magnetic body 110 preferably has a magnetic collector (soft magnetic material) 112 that surrounds the outer periphery of the magnetic core 111. The magnetic collectors 112 are respectively disposed at both ends of the magnetic core 111, and the coil 120 is wound around the magnetic core 111. The soft magnetic material used for the magnetic collector 112 is preferably a steel material such as SS400 (a rolled steel material for general structures specified in JIS G3101) or S45C (a carbon steel material for mechanical structures specified in JIS G4051), a magnetic stainless steel material such as SUS430 or SUS440 (a hot-rolled stainless steel plate specified in JIS G4304), or a high-permeability material such as permalloy or permendur, but any material with a magnetic permeability equal to or greater than that of air (a material with a relative magnetic permeability greater than 1) will do.

[0021] Fig. 6(A) is a perspective view that schematically illustrates a configuration of the power generation element unit 100 that is different from the configurations in Figs. 5(A) and (B), and Fig. 6(B) is a side view thereof. In the examples of Figs. 6(A) and (B), the magnetic body 110 has a bobbin shape. In this case, the magnetic body 110 is also called a magnetic bobbin. The coil 120 is wound around a narrowed portion of the magnetic bobbin.

[0022] The magnetic material 110 of the power generating element section 100 can be made only of a soft magnetic material such as iron, as shown in FIGS. 6(A) and 6(B). However, by providing a magnetic material core 111 that generates a large Barkhausen effect, as shown in FIGS. 5(A) and 5(B), the power generating efficiency can be improved.

[0023] As shown in FIG. 1, when the length (i.e., width) of the first magnetized surface 210a of the first magnet 210 and the second magnetized surface 220a of the second magnet 220 in the direction D1 of movement of the magnet part 200 (i.e., the ±X direction) is a first length L1, and the length (i.e., width) of the first magnetized surface 110a and the second magnetized surface 110b of the magnetic body 110 in the direction D1 of movement of the magnet part 200 is a second length L2, it is desirable that the second length L2 be shorter than the first length L1.

[0024] Furthermore, when the first magnet 210 and the second magnet 220 are arranged with a first gap I1 between them in the direction D1 of movement of the magnet part 200, it is desirable that the first gap I1 be greater than or equal to the first length L1.

[0025] Fig. 7 is a diagram showing typical magnetic field lines M when the first magnetic field collecting surface 110a of the magnetic body 110 of the power generating element unit 100 faces the first magnetized surface 210a of the first magnet 210 (i.e., the state of Fig. 1). Fig. 8 is a diagram showing typical magnetic field lines M when the first magnetic field collecting surface 110a of the magnetic body 110 of the power generating element unit 100 faces the second magnetized surface 220a of the second magnet 220 (i.e., the state of Fig. 2). In Figs. 7 and 8, 251 and 252 indicate the magnetization directions.

[0026] 1 and 7 , the first magnetized surface 210a of the first magnet 210 is flat, and the first magnetic collecting surface 110a of the magnetic body 110 is also flat, with the flat surfaces facing each other. For this reason, magnetic field lines M are emitted from the entire first magnetized surface 210a of the first magnet 210 that faces the first magnetic collecting surface 110a of the power generation element section 100, and most of the magnetic field lines M are collected in the magnetic core 111 from the first magnetic collecting surface 110a of the magnetic body 110 via the magnetic collecting body (soft magnetic material) 112.

[0027] 2 and 8 , the second magnetized surface 220a of the second magnet 220 is flat, and the first magnetic flux collecting surface 110a of the magnetic body 110 is also flat, with the flat surfaces facing each other. For this reason, magnetic field lines M are formed toward the entire second magnetized surface 220a of the second magnet 220 that faces the first magnetic flux collecting surface 110a of the power generation element section 100.

[0028] In this way, the first magnetized surface 210a of the first magnet 210 and the first magnetization surface 110a of the magnetic body 110 are flat surfaces, and in the first state (FIGS. 1 and 7), these flat surfaces face each other. Also, the second magnetized surface 220a of the second magnet 220 and the first magnetization surface 110a of the magnetic body 110 are flat surfaces, and in the second state (FIGS. 2 and 8), these flat surfaces face each other. For this reason, magnetic field lines M are emitted from or toward the entire first magnetized surface 210a of the first magnet 210 of the magnet section 200 that faces the power generation element section 100, and as a result, power generation with high power generation efficiency is possible.

[0029] Furthermore, the magnetic body 110 can collect magnetic lines of force from the first magnetic field collecting surface 110a via the magnetic field collecting body (soft magnetic body) 112 to the magnetic core 111, which generates a large Barkhausen effect, thereby enabling power generation with high power generation efficiency.

[0030] If the gap I1 between the first magnet 210 and the second magnet 220 is narrow and the magnetic body 110 of the power generation element unit 100 straddles the first magnet 210 and the second magnet 220, a state occurs in which the upward magnetic field lines of the first magnet 210 and the downward magnetic field lines of the second magnet 220 cancel each other out, slowing down the change in magnetic flux within the magnetic body core 111. If the gap I1 between the first magnet 210 and the second magnet 220 is set to be equal to or greater than the width of the first magnetic flux collecting surface 110a, the first magnetic flux collecting surface will no longer straddle the first magnet 210 and the second magnet 220, and the change in magnetic flux within the magnetic body core 111 can be made even greater.

[0031] FIG. 9 is a graph showing the relationship between the position [mm] in the direction of movement (X direction) of the first magnet 210 (or the second magnet 220) and the magnetic flux density [mT] at a position spaced a gap G from the first magnetized surface 210a of the first magnet 210 (or the second magnetized surface 220a of the second magnet 220). FIG. 9 shows an example in which the length (i.e., width) of the magnet unit 200 in the direction of movement D1 (i.e., ±X direction) is the first length L1 = 10 mm. FIG. 9 also shows the magnetic flux density [mT] when the gap G, which is the distance from the first magnetic collecting surface 110a of the magnetic body 110 of the power generation element unit 100, is 0.5 mm, 1 mm, and 2 mm. As can be seen from FIG. 9 , the narrower the gap G, the greater the magnetic force acting on the magnetic core 111, resulting in a greater power generation effect. As shown in FIG. 9 , among the conditions where gap G is 0.5 mm, 1 mm, and 2 mm, the magnetic flux density is greatest when gap G is 0.5 mm. However, because a magnetic attraction force acts between first magnetized surface 210 a of first magnet 210 and first magnetization surface 110 a of magnetic body 110 (and between second magnetized surface 220 a of second magnet 220 and first magnetization surface 110 a of magnetic body 110), the minimum gap G that can actually be assembled is 1 mm or greater.

[0032] FIG. 9 shows that the magnetic flux density [mT] at a position spaced apart in the thickness direction (Y direction) from the first magnet 210 (or the second magnet 220) by the gap G has two peaks on the positive side of the magnetic flux density. When the gap G is 1 mm, the distance between the two peaks of the waveform along the horizontal axis is approximately 6 mm, so the width of the magnetic flux collecting surface (first magnetic flux collecting surface 110a in FIG. 1) of the most efficient magnetic body 110 is 6 mm. To obtain even more magnetic force when the gap G is 1 mm, for example, a magnetic body 110 with a magnetic flux collecting surface (first magnetic flux collecting surface 110a in FIG. 1) width of approximately 8 mm can be installed, thereby guiding even more magnetic field lines M to the magnetic core 111. Approximately 90% of the magnetic flux of the magnet unit 200 can be induced to the magnetic core 111.

[0033] Furthermore, to construct the power generation module 10, at least two magnets, a first magnet 210 and a second magnet 220, are required. A narrower gap I1 between the first magnet 210 and the second magnet 220 is desirable from the perspective of improving power generation efficiency. This gap is filled with air or a non-magnetic material. Furthermore, if the length L2, which is the width in the direction D1 (±X direction) of the magnetic body 110's movement, is wide, the installation gap I1 must be correspondingly wider. Therefore, exceeding the most efficient width (6 mm) is disadvantageous in terms of magnet spacing. Therefore, from the perspective of balancing the magnetic force and the gap I1 between the first magnet 210 and the second magnet 220, the width (length L2) of the first magnetic collection surface 110a of the magnetic body 110 is desirably within the range of 60 to 80% of the width (length L1) of each of the first magnet 210 and the second magnet 220.

[0034] FIG. 10 is a block diagram showing the configuration of a power generation device 50 including a power generation module 10 according to the first embodiment. The power generation module 10 includes a power generation element section 100 and a magnet section 200. A voltage is generated in a coil 120 by displacement of the magnet section 200 relative to the power generation element section 100 (linear movement in the ±X directions in the first embodiment). The voltage generated in the coil 120 (i.e., a power generation pulse) exhibits a positive and negative pulse shape, and is full-wave rectified by a rectifier 51 including a rectifier circuit. The rectifier 51 is provided for each power generation element section 100 constituting the power generation module 10. Therefore, when the power generation module 10 includes multiple power generation element sections 100, multiple rectifiers 51 are provided corresponding to the multiple power generation element sections 100, respectively. The rectifier 51 may include a half-wave rectifier circuit instead of a full-wave rectifier circuit.

[0035] The voltage rectified by the one or more rectifiers 51 (i.e., the power of the power generation pulses output from the one or more rectifiers 51) is stored in the power storage unit 52. The power storage unit 52 is a rechargeable secondary battery, a capacitor, or the like.

[0036] 11 shows the waveform of the induced voltage when only an iron core is used as the magnetic body 110 of the power generating element unit 100 (dashed line), and the waveform of the induced voltage when only a composite magnetic wire that generates the Large Barkhausen effect is used as the magnetic body (solid line). The waveform of the induced voltage (dashed line) generated in a coil wound around a magnetic body consisting only of an iron core without the Large Barkhausen effect has a wide pulse width and a large amount of generated charge, but a low peak voltage of about 5 V. On the other hand, the waveform of the induced voltage (solid line) generated in a coil wound around a magnetic body consisting only of a composite magnetic wire that generates the Large Barkhausen effect has a narrow pulse width of 80 μs or less and a small amount of generated charge, but a high peak voltage of 15 V to 20 V.

[0037] FIG. 12 shows the waveform of an induced voltage when the magnetic body 110 includes a composite magnetic wire as a magnetic core and a soft magnetic body as a magnetic collector (iron core). FIG. 12 shows the waveform of the voltage generated in the coil 120 by the voltage due to electromagnetic induction (dashed line in FIG. 11 ) and the voltage due to the large Barkhausen effect (solid line in FIG. 11 ) in the power generation module according to the first embodiment. In the first embodiment, a high voltage of approximately 20 V to 25 V can be obtained by superimposing a voltage waveform due to the large Barkhausen effect, which has a significant peak voltage, on a voltage waveform with a large amount of charge due to electromagnetic induction. Efficient charging of a capacitor requires both a large potential difference and a large amount of charge. The power generation module according to the first embodiment, which can generate an induced voltage with the waveform shown in FIG. 12 , is particularly suitable for charging a capacitor.

[0038] As described above, in the power generation module 10 according to the first embodiment, at least one of the power generation element unit 100 and the magnet unit 200 is installed so as to be movable along the guide member 300, and the power generation element unit 100 and the magnet unit 200 are installed so that, during this movement, a first state in which the first magnetization surface 110a and the first magnetized surface 210a face each other and a second state in which the first magnetization surface 110a and the second magnetized surface 220a face each other exist. Therefore, because there exist the first state in which the first magnetization surface 110a and the first magnetized surface 210a face each other face to face and the second state in which the first magnetization surface 110a and the second magnetized surface 220a face each other face to face, the magnetic flux of the first magnet 210 and the magnetic flux of the second magnet 220 can be efficiently introduced into the magnetic body 110, which has the effect of improving power generation efficiency.

[0039] Furthermore, when a composite magnetic wire that generates a large Barkhausen effect is used as the magnetic core 111, the amount of charge is small, but it is suitable for charging a capacitor.

[0040] Furthermore, when a composite magnetic wire that generates the large Barkhausen effect is used as the magnetic core 111 and a soft magnetic material that surrounds the magnetic core 111 is provided as the magnetic collector 112, the magnetic lines of force can be collected from the first magnetic collector surface 110a via the magnetic collector 112 to the magnetic core 111 that generates the large Barkhausen effect, thereby achieving the effects of enabling power generation with high power generation efficiency and being suitable for charging a capacitor.

[0041] Furthermore, when the magnetic core is made of a soft magnetic material such as an iron core, the magnetic collector and the magnetic core can be integrated using the same material. In addition, in the case of a bobbin-shaped magnetic body 110 as shown in Figure 6, the winding process of the coil 120 can be automated, making it possible to reduce costs in terms of both materials and labor.

[0042] Second Embodiment In the first embodiment, the magnet unit 200 has been described as having a first magnet 210 and a second magnet 220. However, the number of magnets included in the magnet unit may be three or more. In the second embodiment, a case where the magnet unit has four magnets will be described.

[0043] 13 is a perspective view that schematically shows the configuration of a power generation module 20 according to embodiment 2 (when the first magnetic collecting surface 110a of the magnetic body 110 of the power generation element section 100 faces the first magnetized surface 210a of the first magnet 210). The power generation module 20 has the power generation element section 100 and a magnet section 200a. The power generation element section 100 and the magnet section 200a are provided so that their relative positions can be changed.

[0044] The structure of the power generation element unit 100 is the same as that of embodiment 1. The magnet unit 200a has a first set (pair) of a first magnet 210 having a first magnetized surface 210a with a first polarity and a second magnet 220 having a second magnetized surface 220a with a second polarity, as well as a second set (pair) of a magnet 211 having a magnetized surface 211a with a first polarity (having the same structure as the first magnet 210 and being placed in the same position) and a magnet 221 having a magnetized surface 221a with a second polarity (having the same structure as the second magnet 220 and being placed in the same position). The first set (pair) and the second set (pair) have the same structure, are aligned in a straight line, and are spaced apart by the same interval I1 as described in embodiment 1. Although an example in which four magnets are arranged linearly in the X direction has been described in FIG. 13, it is also possible to arrange them in a curved line and move the power generating element section 100 parallel to the curved line.

[0045] At least one of the power generation element unit 100 and the magnet unit 200a is supported by the guide member 300 so as to be able to move (i.e., displace) along the guide member 300. In Fig. 13 , the magnet unit 200a is supported by the guide member 300, but the power generation element unit 100 may also be supported by the guide member 300. The guide member 300 is the same as that in the first embodiment.

[0046] The power generation module 20 is configured so that, during the movement of the magnet section 200a, the following states alternate: a first state in which the first magnetic collecting surface 110a of the magnetic body 110 and the first magnetized surface 210a of the first magnet 210 face each other; a second state in which the first magnetic collecting surface 110a of the magnetic body 110 and the second magnetized surface 220a of the second magnet 220 face each other; a first state in which the first magnetic collecting surface 110a and the magnetized surface 211a of the magnet 211 face each other; and a second state in which the first magnetic collecting surface 110a and the magnetized surface 221a of the magnet 221 face each other.

[0047] As described above, according to the power generation module 20 of embodiment 2, as in the case of embodiment 1, magnetic flux can be efficiently introduced into the magnetic body 110, thereby achieving the effect of improving power generation efficiency.

[0048] Furthermore, when a composite magnetic wire that generates a large Barkhausen effect is used as the magnetic core 111, the amount of charge is small, but it is suitable for charging a capacitor.

[0049] Furthermore, when a composite magnetic wire that generates a large Barkhausen effect is used as the magnetic core 111 and a soft magnetic material that surrounds the magnetic core 111 is provided as the magnetic collector 112, the effect of being able to generate electricity with high power generation efficiency and the effect of being suitable for charging a capacitor can be obtained.

[0050] Except for the above, the second embodiment is the same as the first embodiment.

[0051] Third Embodiment In the first and second embodiments, the case where the magnets of the magnet section 200 are arranged on one side of the power generation element section 100 has been described. In the third embodiment, the case where the magnets of the magnet section are arranged on both sides of the power generation element section 100 will be described.

[0052] Fig. 14 is a perspective view that schematically shows the configuration of power generation module 30 according to embodiment 3 (when first magnetization surface 110a of power generation element unit 100 faces first magnetized surface 210a of first magnet 210, and second magnetization surface 110b faces third magnetized surface 230a of third magnet 230). Fig. 15 is a perspective view that schematically shows the configuration of power generation module 30 (when first magnetization surface 110a of power generation element unit 100 faces second magnetized surface 220a of second magnet 220, and second magnetization surface 110b faces fourth magnetized surface 240a of fourth magnet 240).

[0053] Power generation module 30 according to the third embodiment differs from power generation module 10 according to the first embodiment in that magnet section 200b further includes third magnet 230 having third magnetized surface 230a of the second polarity and fourth magnet 240 having fourth magnetized surface 240a of the first polarity, in that in the first state ( FIG. 14 ), first magnetization surface 110a and first magnetized surface 210a face each other and second magnetization surface 110b and third magnetization surface 230a face each other, and in the second state ( FIG. 15 ), first magnetization surface 110a and second magnetization surface 220a face each other and second magnetization surface 110b and fourth magnetization surface 240a face each other.

[0054] In embodiment 3, the normal to first magnetized surface 210a and the normal to second magnetized surface 220a extend in the same first direction (+Y direction), and the normal to third magnetized surface 230a and the normal to fourth magnetized surface 240a extend in a second direction (-Y direction) that is opposite to the first direction. Furthermore, in power generation module 30, magnet section 200b desirably further includes first magnetic yoke 250 that connects first magnet 210 and third magnet 230, and second magnetic yoke 260 that connects second magnet 220 and fourth magnet 240.

[0055] Furthermore, when the length of each of the first magnetized surface 210a, the second magnetized surface 220a, the third magnetized surface 230a, and the fourth magnetized surface 240a in the direction of movement D1 (±X direction) is a first length L1, and the length of each of the first magnetized surface 110a and the second magnetized surface 110b in the direction of movement D1 is a second length L2, it is desirable that the second length L2 be shorter than the first length L1.

[0056] The length of each of the first magnetized surface 210a, the second magnetized surface 220a, the third magnetized surface 230a, and the fourth magnetized surface 240a in the direction of movement D1 is a first length L1, and when the first magnet 210 and the second magnet 220 are arranged with a first interval I1 in the direction of movement D1, and when the third magnet 230 and the fourth magnet 240 are arranged with the first interval I1 in the direction of movement D1, it is desirable that the first interval I1 be equal to or greater than the first length L1.

[0057] As described above, according to the power generation module 30 of embodiment 3, as in embodiments 1 and 2, magnetic flux can be efficiently introduced into the magnetic body 110, thereby achieving the effect of improving power generation efficiency.

[0058] Furthermore, when a composite magnetic wire that generates the large Barkhausen effect is used as the magnetic core 111, the amount of charge is small but it is suitable for charging a capacitor. Furthermore, when the magnetic core 111 is provided with the magnetic collector 112, it is possible to generate power with high power generation efficiency and it is suitable for charging a capacitor.

[0059] Other than the above, embodiment 3 is the same as embodiment 1 or 2. Furthermore, the number of magnets aligned in the X direction may be three or more.

[0060] 16(A) is a perspective view schematically showing the configuration of a power generation module 40 according to a fourth embodiment, and Fig. 16(B) is a perspective view schematically showing the internal configuration of the power generation module 40. The power generation module 40 according to the fourth embodiment has a rotor 410 supported rotatably about a central axis 411, and a stator 420.

[0061] The rotor 410 includes an inner base 430, one or more first magnets 431 and one or more second magnets 432 arranged on the outer circumferential surface of the inner base 430, an outer base 440, and one or more third magnets 441 and one or more fourth magnets 442 arranged on the inner circumferential surface of the outer base 440. The first magnets 431 of the inner base 430 have their north poles facing outward, and the second magnets 432 have their south poles facing outward. In the example of FIGS. 16A and 16B , the first magnets 431 and the second magnets 432 are alternately arranged at 30° central angles (equidistant intervals) around the circumferential direction of the inner base 430. In other words, the first magnetized surface (north pole) of the first magnet 431 and the second magnetized surface (south pole) of the second magnet 432 face outward, which is the opposite direction (third direction) toward the center of the same circle. In other words, the first magnetized surface and the second magnetized surface face outward relative to the central axis. Furthermore, the third magnet 441 and the fourth magnet 442 are alternately arranged at 30° central angle intervals (equidistant intervals) around the circumferential direction of the outer base 440. In other words, the third magnetized surface (south pole) of the third magnet 441 and the fourth magnetized surface (south pole) of the fourth magnet 442 face inward, which is a direction toward the center of the same circle (fourth direction). In other words, the third magnetized surface and the fourth magnetized surface face inward relative to the central axis. In this case, the guide member is the central axis 411, and movement along the guide member is movement in the circumferential direction of the rotor 410 (i.e., the rotor outer circumferential circle). In addition, the first magnetized surface (north pole) of the first magnet 431 and the third magnetized surface (south pole) of the third magnet 441 face each other across the space in which the power generating element unit 100 is placed, and the second magnetized surface (south pole) of the second magnet 432 and the fourth magnetized surface (north pole) of the fourth magnet 441 face each other across the space in which the power generating element unit 100 is placed.

[0062] The stator 420 has one or more power generating element units 100 arranged on the same arc centered on the central axis 411 of the rotor 410. In the example of Figures 16(A) and 16(B), the multiple (12) power generating element units 100 are arranged alternately at central angle intervals of 30° (at equal angular intervals).

[0063] As described above, according to the power generation module 40 of embodiment 4, as in embodiments 1 to 3, magnetic flux can be efficiently introduced into the magnetic body 110, thereby achieving the effect of improving power generation efficiency.

[0064] Furthermore, when a composite magnetic wire that generates the large Barkhausen effect is used as the magnetic core 111, the amount of charge is small but it is suitable for charging a capacitor. Furthermore, when the magnetic core 111 is provided with the magnetic collector 112, it is possible to generate power with high power generation efficiency and it is suitable for charging a capacitor.

[0065] Furthermore, since the power generating element section 100 is provided in plurality, the power generating efficiency is high.

[0066] Except for the above, the fourth embodiment is the same as any of the first to third embodiments.

[0067] 10, 20, 30, 40 Power generation module, 50 Power generation device, 51 Rectifier, 52 Power storage section, 100 Power generation element section, 110 Magnetic body, 110a First magnetic collecting surface, 110b Second magnetic collecting surface, 120 Coil, 200, 200a, 200b Magnet section, 210, 431 First magnet, 210a First magnetized surface, 220, 432 Second magnet, 220a Second magnetized surface, 230, 441 Third magnet, 230a Third magnetized surface, 240, 442 Fourth magnet, 240a Fourth magnetized surface, 300 Guide member, 410 Rotor, 411 Central shaft, 420 Stator, D1 Direction of movement (direction of displacement), L1 first length, L2 second length, I1 first interval.

Claims

1. A power generation module comprising: a power generation element unit having a magnetic body with a first magnetic collecting surface and a second magnetic collecting surface and a coil wound around the magnetic body; and a magnet unit having a first magnet with a first magnetized surface of a first polarity and a second magnet with a second magnetized surface of a second polarity opposite to the first polarity, wherein at least one of the power generation element unit and the magnet unit is installed so as to be movable along a guide member, and the power generation element unit and the magnet unit are installed such that there exist a first state in which the first magnetic collecting surface faces the first magnetized surface and a second state in which the first magnetic collecting surface faces the second magnetized surface during the movement.

2. The power generation module according to claim 1, wherein each length of the first magnetized surface and the second magnetized surface in the moving direction is a first length, each length of the first magnetic collecting surface and the second magnetic collecting surface in the moving direction is a second length, and the second length is shorter than the first length.

3. The power generation module according to claim 1 or 2, wherein each length of the first magnetized surface and the second magnetized surface in the moving direction is a first length, the first magnet and the second magnet are arranged with a first interval in the moving direction, and the first interval is equal to or greater than the first length.

4. The power generation module according to any one of claims 1 to 3, wherein the movement along the guide member is a linear movement.

5. The power generation module according to any one of claims 1 to 3, wherein the guide member has a rotor that rotates about a central axis, the first magnetized surface and the second magnetized surface face outward about the central axis, and the movement along the guide member is a circumferential movement of the rotor.

6. The power generation module according to claim 1, wherein the magnet unit further has a third magnet with a third magnetized surface of the second polarity and a fourth magnet with a fourth magnetized surface of the first polarity, in the first state, the first magnetic collecting surface faces the first magnetized surface and the second magnetic collecting surface faces the third magnetized surface, and in the second state, the first magnetic collecting surface faces the second magnetized surface and the second magnetic collecting surface faces the fourth magnetized surface.

7. The magnet portion further includes a first magnetic yoke connecting the first magnet and the third magnet, and a second magnetic yoke connecting the second magnet and the fourth magnet. The power generation module according to claim 6, characterized in that.

8. Each length in the moving direction of the first magnetization surface, the second magnetization surface, the third magnetization surface, and the fourth magnetization surface is a first length. Each length in the moving direction of the first magnetic flux collecting surface and the second magnetic flux collecting surface is a second length. The second length is shorter than the first length. The power generation module according to claim 6 or 7, characterized in that.

9. Each length in the moving direction of the first magnetization surface, the second magnetization surface, the third magnetization surface, and the fourth magnetization surface is a first length. The first magnet and the second magnet are arranged with a first interval in the moving direction. The third magnet and the fourth magnet are arranged with the first interval in the moving direction. The first interval is equal to or greater than the first length. The power generation module according to any one of claims 6 to 8, characterized in that.

10. The movement along the guide member is a linear movement. The power generation module according to any one of claims 6 to 9, characterized in that.

11. The guide member has a rotor that rotates about a central axis. The first magnetization surface and the second magnetization surface face outward about the central axis. The third magnetization surface and the fourth magnetization surface face inward about the central axis. The movement along the guide member is a movement in the circumferential direction of the rotor. The power generation module according to any one of claims 6 to 9, characterized in that.

12. The magnetic body has a magnetic core that generates a large Barkhausen effect in response to a change in magnetic flux. The power generation module according to any one of claims 1 to 11, characterized in that.

13. The magnetic body has a magnetic core that generates a large Barkhausen effect in response to a change in magnetic flux, and a magnetic flux collector that is a soft magnetic body surrounding the outer periphery of the magnetic core. The power generation module according to any one of claims 1 to 11, characterized in that.

14. A power generation device comprising: the power generation module according to any one of claims 1 to 13; a rectifier that rectifies positive and negative power generation pulses generated in the coil of the power generation module; and a power storage unit that stores the power of the power generation pulses output from the rectifier.

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