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WO2019130862A1 - Dispositif de production d'énergie - Google Patents

Dispositif de production d'énergie Download PDF

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Publication number
WO2019130862A1
WO2019130862A1 PCT/JP2018/041896 JP2018041896W WO2019130862A1 WO 2019130862 A1 WO2019130862 A1 WO 2019130862A1 JP 2018041896 W JP2018041896 W JP 2018041896W WO 2019130862 A1 WO2019130862 A1 WO 2019130862A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetostrictive element
adhesive
power generation
frame
generation device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/041896
Other languages
English (en)
Japanese (ja)
Inventor
佳子 高橋
笹岡　達雄
学 五閑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of WO2019130862A1 publication Critical patent/WO2019130862A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H10N35/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N35/00—Magnetostrictive devices
    • H10N35/80—Constructional details
    • H10N35/85—Magnetostrictive active materials

Definitions

  • the present invention relates to a power generator using vibration.
  • the present invention relates to a power generator using a magnetostrictive material.
  • Vibration power generation can be used to generate power on the equipment itself.
  • Vibration power generation includes a piezoelectric method, an electrostatic induction method, an electromagnetic induction method, and a magnetostrictive method.
  • the piezoelectric method using a piezoelectric element has low mechanical durability due to the fragility of the element.
  • the electromagnetic induction method there is a problem in downsizing because there is a movable portion.
  • the magnetostrictive system using an iron-based magnetostrictive material is excellent in mechanical properties and processability because the magnetostrictive element is a ductile material.
  • this magnetostrictive method is useful for application to a wireless sensor module because the impedance is also low electrically.
  • this magnetostrictive vibrational power generation applying a stress to the magnetostrictive element changes the lines of magnetic force generated by the inverse magnetostrictive effect. According to the law of electromagnetic induction, a change in the lines of magnetic force generates an electromotive force in the coil wound around the magnetostrictive element. That is, this magnetostrictive vibrational power generation is a power generation method that converts mechanical energy into electrical energy.
  • Patent Document 1 proposes an actuator that uses a structure of a power generation element and a power generation element that can continue vibration for a long time while suppressing the loss of kinetic energy during vibration.
  • the power generation device 100 is roughly configured of a power generation unit 160, a frame 110, a magnet 170, and a weight 140.
  • the power generation unit 160 is provided to perform power generation by the inverse magnetostrictive effect by the displacement of the free end side 120 of the frame 110.
  • the power generation unit 160 includes a magnetostrictive element 161, a coil 162, and a magnetic plate 163.
  • the magnetostrictive element 161 is a plate-like member made of a magnetic material. Magnetic lines of force from the magnet 170 pass through the frame 110 and the magnetostrictive element 161 to form a magnetic circuit.
  • the free end 120 of the frame 110 is deformed to open or close from the fixed end 130.
  • the weight 140 By attaching the weight 140 to the end of the free end side 120, the weight 140 once started to vibrate continues to vibrate for a long time by the inertial force, so that the vibration of the entire frame 110 can be sustained for a long time.
  • a large impact force F in the vertical direction to the end of the fixed end side 130, a large inertia force is applied to the weight 140 to vibrate the frame 110.
  • a tensile force or a compressive force is applied to the magnetostrictive element 161, and an induced current is generated in the coil 162 by the inverse magnetostrictive effect to generate electric power.
  • the present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a power generation device that improves power generation efficiency by transmitting the magnetostrictive element 161 without attenuating bending of the frame 110.
  • a magnetostrictive element made of a magnetostrictive material, a coil into which the magnetostrictive element is inserted, and the magnetostrictive element are disposed, and one end in the longitudinal direction is a fixed end, the other in the longitudinal direction
  • the frame has a free end, a first adhesive for fixing the magnetostrictive element to the frame, and the frame has a magnet disposed, and the longitudinal end of the magnetostrictive element is at the end.
  • the power generator of the present invention it is possible to efficiently convert vibrational energy into electric power.
  • FIG. 1 is a schematic configuration diagram of a power generation device according to Embodiment 1 of the present invention.
  • FIG. 2A is a schematic AA ′ cross-sectional view of the power generation device according to Embodiment 1 of the present invention.
  • FIG. 2B is a schematic BB ′ cross-sectional view of the power generation device in Embodiment 1 of the present invention.
  • FIG. 2C is a schematic BB ′ cross-sectional view of Modification Example 1 of the power generation device in Embodiment 1 of the present invention.
  • FIG. 2D is a schematic BB ′ cross-sectional view of Modification 2 of the power generation device in Embodiment 1 of the present invention.
  • FIG. 1 is a schematic configuration diagram of a power generation device according to Embodiment 1 of the present invention.
  • FIG. 2A is a schematic AA ′ cross-sectional view of the power generation device according to Embodiment 1 of the present invention.
  • FIG. 2B is a schematic BB
  • FIG. 3 is a vibration analysis model diagram of the power generation device according to Embodiment 1 of the present invention.
  • FIG. 4A is a graph showing the relationship between the adhesive Young's modulus and the magnetostrictive element strain of the power generation apparatus according to Embodiment 1 of the present invention.
  • FIG. 4B is a diagram showing the type of adhesive of the power generation device and the durability of the power generation device in the first embodiment of the present invention.
  • FIG. 4C is a graph showing the relationship between the thickness of the adhesive and the magnetostrictive element strain of the power generation apparatus according to Embodiment 1 of the present invention.
  • FIG. 5A is a schematic AA ′ cross-sectional view of a power generation device according to Embodiment 2 of the present invention.
  • FIG. 5B is a schematic BB ′ cross-sectional view of the power generation device in Embodiment 2 of the present invention.
  • FIG. 5C is a schematic BB ′ cross-sectional view of Modification 1 of the power generation device in the second embodiment of the present invention.
  • FIG. 5D is a schematic BB ′ cross-sectional view of Modification Example 2 of the power generation device in Embodiment 2 of the present invention.
  • FIG. 6 is a side view of a schematic configuration of a power generation device according to Patent Document 1.
  • FIG. 7 is a cross-sectional view of a schematic configuration of a power generation unit according to Patent Document 1.
  • FIG. 1 is a schematic configuration diagram of a power generation device according to Embodiment 1 of the present invention.
  • FIG. 2A is a schematic AA ′ sectional view of the power generation apparatus in the first embodiment of the present invention
  • FIG. 2B is a schematic BB ′ sectional view of the power generation apparatus in the first embodiment of the present invention
  • FIG. 2D is a schematic BB ′ sectional view of a second modification of the power generation device according to the first embodiment of the present invention.
  • the power generation device 1 includes a frame 2, a magnetostrictive element 3, a first adhesive 4, a magnet 5, and a coil 6.
  • the frame 2 and the magnetostrictive element 3 are attached by the first adhesive 4 and have a fillet 4a at the end 3a of the magnetostrictive element 3 in the bending direction, and the magnetostrictive element 3 is in the direction perpendicular to the bending direction.
  • a fillet or a bonding portion such as a resin is not formed.
  • the first adhesive 4 bonds the top surface of the frame 2 to the bottom surface of the magnetostrictive element 3.
  • the first adhesive 4 bonds the entire bottom surface of the magnetostrictive element 3 or most of the bottom surface.
  • the frame 2 and the magnetostrictive element 3 are not in contact with each other.
  • the characteristic that the fillet portion of the first adhesive 4 is not formed at the end 3b of the magnetostrictive element 3 which is in the direction perpendicular to the bending direction of the power generator 1 is that the frame 2 and the magnetostrictive element are shown in FIGS. Not only when 3 is the same width, but also when the width of the magnetostrictive element 3 is narrower than the width of the frame 2 as shown in FIG. 2C, or as shown in FIG. The same is true when the width is wide.
  • the magnetostrictive element 3 When the fillet portion is formed at the end 3 b of the magnetostrictive element 3, the magnetostrictive element 3 does not easily bend.
  • the bending direction is the longitudinal direction of the frame 2.
  • the coil 6, the magnet 5 and the like are shown abbreviated.
  • the frame 2 and the magnetostrictive element 3 can be more firmly adhered.
  • the fillet of the first adhesive 4 bends the magnetostrictive element 3. Can be prevented, and the power generation efficiency of the power generation device 1 can be improved.
  • the frame may be bent to be L-shaped, U-shaped, or U-shaped.
  • FIG. 3 is a vibration analysis model diagram of the power generation device in the first embodiment.
  • FIG. 4A shows the Young's modulus of the first adhesive 4 and the magnetostrictive element 3 as a result of vibration analysis by changing the Young's modulus of the first adhesive 4 in the analysis model shown in FIG. 3 of the power generation apparatus 1 according to the first embodiment. It is a figure which shows the relationship of distortion of.
  • FIG. 4B is a diagram illustrating the type of the first adhesive 4 of the power generation device 1 according to Embodiment 1 and the endurance test result of the power generation device 1.
  • FIG. 4C shows vibration analysis by changing the thickness of the first adhesive 4 (the thickness of the first adhesive 4 on the lower surface of the magnetostrictive element 3) in the analysis model shown in FIG. 3 of the power generation apparatus 1 according to the first embodiment. It is a figure which shows the relationship between the thickness of the 1st adhesive agent 4 of the result, and distortion of a magnetostriction element.
  • An epoxy-based adhesive was used as the first adhesive 4. However, other adhesives have a similar tendency.
  • the power generation device 1 comprises a frame 2, a magnetostrictive element 3, a first adhesive 4, a magnet 5, a coil 6, and a weight 8, and the frame 2 has a thickness of 0.8 mm and a width of 8 mm.
  • the magnetostrictive element 3 has a thickness of 1 mm and an iron-gallium based alloy having a width of 8 mm, and the first adhesive 4 has a thickness of 0.2 mm.
  • the first adhesive 4 is preferably a material having a large Young's modulus, since the strain of the magnetostrictive element 3 increases as the Young's modulus increases. As a result, epoxy type or solder type is good.
  • the first adhesive layer 4 be an epoxy type or a silicone type from the viewpoint of durability.
  • the thickness of the first adhesive 4 is preferably 0.25 mm or less as shown in FIG. 4C. At least the thickness of the first adhesive 4 should be thinner than the thickness of the magnetostrictive element 3. Furthermore, the thickness of the first adhesive 4 may be 1/3 or less of the thickness of the magnetostrictive element 3 or may be 1/4 or less.
  • an epoxy resin is used, and the thickness is preferably 0.25 mm or less.
  • the magnetostrictive element 3 is a plate-like member made of a magnetic material.
  • the type of magnetic material is not particularly limited, for example, an iron-gallium based alloy or an iron-cobalt based alloy may be used, but other materials may be used.
  • the magnetostrictive element 3 may not be a crystalline material but an amorphous material.
  • the magnetostrictive element 3 is preferably made of a ductile magnetic material because it expands / contracts under an external force.
  • the coil 6 is provided with a space or an adhesive layer around the magnetostrictive element 3 and wound, and generates a voltage in proportion to a temporal change of magnetic lines of force passing through the magnetostrictive element 3 according to the law of electromagnetic induction.
  • the coil 6 is disposed so as to wrap the laminated body of the magnetostrictive element 3 and the frame 2 on the outer periphery.
  • the material of the coil 6 is not particularly limited, for example, a copper wire or an aluminum wire can be used. Moreover, the magnitude of the voltage can be adjusted by changing the number of turns of the coil 6.
  • the coil may be divided into two or more.
  • the magnet 5 faces the magnetostrictive element 3 and is fixed to the frame 2 to form a magnetic circuit.
  • a neodymium permanent magnet is used as the magnet 5, but the magnet 5 is not particularly limited to a ferrite magnet, a cobalt magnet, or the like.
  • the magnetostrictive element 3 is fixed to be opposite to the magnet 5. However, even if one magnet is fixed to one side, the magnetic circuit may be formed.
  • the weight 8 is made of a magnetic material or a nonmagnetic material having a low permeability. It is fixed on the axis of the magnetostrictive element 3 on the frame 2 on the free end side of the power generation device 1, and a plurality of them may be stacked and fixed.
  • the first adhesive 4 of epoxy type is used for fixing, but it is not particularly limited, and may be fixed mechanically with a bolt or the like. Moreover, although the weight is provided in the first embodiment, the weight may not be provided.
  • Second Embodiment The general structure of the second embodiment is the same as that shown in FIG. The detailed structure of the second embodiment will be described in the following figures.
  • FIG. 5A is a schematic AA ′ cross-sectional view of a power generation device according to Embodiment 2 of the present invention.
  • FIG. 5B is a schematic BB ′ cross-sectional view of the power generation device in Embodiment 2 of the present invention.
  • FIG. 5C is a schematic BB ′ cross-sectional view of Modification 1 of the power generation device in the second embodiment of the present invention.
  • FIG. 5D is a schematic BB ′ cross-sectional view of Modification Example 2 of the power generation device in Embodiment 2 of the present invention.
  • the same reference numerals are used for the same components as in FIG. 1, and the description will be omitted. Matters not described are the same as in the first embodiment.
  • the power generation device 1 is formed of a frame 2, a magnetostrictive element 3, a first adhesive 4, a magnet 5, a coil 6 and a second adhesive 10.
  • the magnet 5 and the coil 6 are the same as that of Embodiment 1, and are not shown in figure.
  • the second adhesive 10 is formed on the end 3 b of the magnetostrictive element 3 in the direction perpendicular to the bending direction of the power generation device 1 to fix the frame 2 and the magnetostrictive element 3.
  • the second adhesive 10 uses a silicone resin as a material so as not to inhibit the bending of the magnetostrictive element 3.
  • At least the Young's modulus of the first adhesive 4 should be greater than the Young's modulus of the second adhesive 10. Young's modulus should be 100 times or more different.
  • the second adhesive 10 fixes the end face of the magnetostrictive element 3 and the end face of the frame 2 in the direction perpendicular to the bending direction of the power generation device 1 Form as you want.
  • the second adhesive 10 fixes the end face of the magnetostrictive element 3 to the surface of the frame 2 on the side of the magnetostrictive element 3 as shown in FIG. 5C. To form.
  • the second adhesive 10 fixes the surface of the magnetostrictive element 3 on the frame 2 side and the end face of the frame 2 as shown in FIG. 5D. To form.
  • Embodiments 1 and 2 can be combined.
  • the frame 2 is a straight rod, but may be a curved or U-shaped frame.
  • the power generation device of the present invention can improve power generation efficiency, and is a key component in IoT where many usage scenes are expected in the industrial field, crime prevention / disaster prevention field, social infrastructure field, medical / welfare field, etc. It is particularly useful for application to wireless sensor modules that are

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

L'invention concerne un dispositif de production d'énergie comprenant : un élément magnétostrictif constitué d'un matériau magnétostrictif ; une bobine dans laquelle est inséré l'élément magnétostrictif ; un cadre sur lequel est disposé l'élément magnétostrictif et dont une extrémité dans une direction longitudinale est une extrémité fixe et dont l'autre extrémité dans la direction longitudinale est une extrémité libre ; un premier adhésif fixant l'élément magnétostrictif au cadre ; un aimant disposé sur le cadre ; et une partie congé du premier adhésif à une extrémité de l'élément magnétostrictif dans la direction longitudinale.
PCT/JP2018/041896 2017-12-27 2018-11-13 Dispositif de production d'énergie Ceased WO2019130862A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-250638 2017-12-27
JP2017250638 2017-12-27

Publications (1)

Publication Number Publication Date
WO2019130862A1 true WO2019130862A1 (fr) 2019-07-04

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ID=67063049

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PCT/JP2018/041896 Ceased WO2019130862A1 (fr) 2017-12-27 2018-11-13 Dispositif de production d'énergie

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WO (1) WO2019130862A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022264655A1 (fr) * 2021-06-14 2022-12-22 スミダコーポレーション株式会社 Élément de génération d'énergie magnétostrictif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011007646A1 (fr) * 2009-07-17 2011-01-20 株式会社村田製作所 Structure pour le collage d'une plaque métallique sur un corps piézoélectrique, ainsi que procédé de collage
WO2013038682A1 (fr) * 2011-09-16 2013-03-21 国立大学法人金沢大学 Élément électrogène, et dispositif électrogène
JP2014107982A (ja) * 2012-11-28 2014-06-09 Fujitsu Ltd 発電装置
JP2016029873A (ja) * 2014-07-25 2016-03-03 株式会社デンソー 発電装置
JP2017072398A (ja) * 2015-10-05 2017-04-13 アズビル株式会社 超音波センサ
US20170309809A1 (en) * 2016-04-20 2017-10-26 Honeywell International Inc. Constrained piezo-electric element to improve drive capability

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011007646A1 (fr) * 2009-07-17 2011-01-20 株式会社村田製作所 Structure pour le collage d'une plaque métallique sur un corps piézoélectrique, ainsi que procédé de collage
WO2013038682A1 (fr) * 2011-09-16 2013-03-21 国立大学法人金沢大学 Élément électrogène, et dispositif électrogène
JP2014107982A (ja) * 2012-11-28 2014-06-09 Fujitsu Ltd 発電装置
JP2016029873A (ja) * 2014-07-25 2016-03-03 株式会社デンソー 発電装置
JP2017072398A (ja) * 2015-10-05 2017-04-13 アズビル株式会社 超音波センサ
US20170309809A1 (en) * 2016-04-20 2017-10-26 Honeywell International Inc. Constrained piezo-electric element to improve drive capability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022264655A1 (fr) * 2021-06-14 2022-12-22 スミダコーポレーション株式会社 Élément de génération d'énergie magnétostrictif
JP2022190403A (ja) * 2021-06-14 2022-12-26 スミダコーポレーション株式会社 磁歪発電素子

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