WO2019130862A1 - Power generation device - Google Patents

Power generation device 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
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WO
WIPO (PCT)
Prior art keywords
magnetostrictive element
adhesive
power generation
frame
generation device
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PCT/JP2018/041896
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French (fr)
Japanese (ja)
Inventor
佳子 高橋
笹岡　達雄
学 五閑
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パナソニックＩｐマネジメント株式会社
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Publication of WO2019130862A1 publication Critical patent/WO2019130862A1/en

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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

Provided is a power generation device having: a magnetostrictive element formed of a magnetostrictive material; a coil into which the magnetostrictive element is inserted; a frame having the magnetostrictive element disposed thereon and having one end in a longitudinal direction as a fixed end and the other end in the longitudinal direction as a free end; a first adhesive fixing the magnetostrictive element to the frame; a magnet disposed on the frame; and a fillet portion of the first adhesive at an end of the magnetostrictive element in the longitudinal direction.

Description

発電装置Power generator
　本発明は、振動を利用した発電装置に関する。特に、磁歪材料を使用した発電装置に関するものである。 The present invention relates to a power generator using vibration. In particular, the present invention relates to a power generator using a magnetostrictive material.
　近年、無線でも使用できる機器が求められている。機器自体で発電するために、振動発電が利用できる。 In recent years, devices that can be used wirelessly are being sought. Vibration power generation can be used to generate power on the equipment itself.
　振動発電には、圧電方式、静電誘導方式、電磁誘導方式、磁歪方式がある。しかし、圧電素子（ピエゾ素子）を使用した圧電方式は、素子の脆弱性により機械的な耐久性が低い。電磁誘導方式では、可動部があるため小型化に課題がある。その中で鉄系の磁歪材料を使用した磁歪方式は、磁歪素子が延性材料のため、機械的特性、加工性に優れる。また、この磁歪方式は、電気的にもインピーダンスが低いため、無線センサーモジュールへの適用に有用である。 Vibration power generation includes a piezoelectric method, an electrostatic induction method, an electromagnetic induction method, and a magnetostrictive method. However, the piezoelectric method using a piezoelectric element (piezo element) has low mechanical durability due to the fragility of the element. In the electromagnetic induction method, there is a problem in downsizing because there is a movable portion. Among them, the magnetostrictive system using an iron-based magnetostrictive material is excellent in mechanical properties and processability because the magnetostrictive element is a ductile material. In addition, this magnetostrictive method is useful for application to a wireless sensor module because the impedance is also low electrically.
　この磁歪方式による振動発電では、磁歪素子に応力を加えることで、逆磁歪効果により発生する磁力線が変化する。電磁誘導の法則により、この磁力線が変化により、磁歪素子の周囲に巻かれたコイルに、起電力を発生する。つまり、この磁歪方式による振動発電は、機械エネルギーを電気エネルギーに変化する発電方式である。 In 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.
　図６に特許文献１による磁歪方式を適用した発電装置の概略構成図を示す。 The schematic block diagram of the electric power generating apparatus which applied the magnetostriction system by patent document 1 to FIG. 6 is shown.
　特許文献１においては、振動中の運動エネルギーの損失を抑えて振動を長時間継続させることができる発電素子と発電素子の構造を利用するアクチュエータが提案されている。 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.
　図６に示すように、発電装置１００は、発電部１６０、フレーム１１０、磁石１７０、錘１４０から概略構成される。発電部１６０は、フレーム１１０の自由端側１２０の変位により、逆磁歪効果による発電を行うために設けられている。発電部１６０は、図７に示すように、磁歪素子１６１、コイル１６２、磁性板１６３から構成されている。磁歪素子１６１は、磁性材料で構成される板状の部材である。磁石１７０からの磁力線は、フレーム１１０と磁歪素子１６１を通過することで、磁気回路が形成される。 As shown in FIG. 6, 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. As shown in FIG. 7, 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.
　図６の発電装置１００では、フレーム１１０の自由端側１２０は、固定端側１３０から開く、または閉じるように変形する。自由端側１２０の端部に錘１４０を取り付けることで、一旦振動を開始した錘１４０は、慣性力により長時間振動し続けるので、フレーム１１０全体の振動を長時間持続させられる。また、固定端側１３０の端部に鉛直方向の大きな衝撃力Ｆを付加することで、錘１４０に大きな慣性力を作用させてフレーム１１０を振動させる。これらの動作により、磁歪素子１６１に引張力または、圧縮力が加わり、逆磁歪効果によりコイル１６２に誘導電流が発生して発電される。 In the power generation apparatus 100 of FIG. 6, the free end 120 of the frame 110 is deformed to open or close from the fixed end 130. 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. Further, by applying 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. By these operations, 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.
国際公開第２０１５／１４１４１４号International Publication No. 2015/141414
　しかしながら、前記従来の構成では、縦弾性率の異なるフレーム１１０と磁歪素子１６１を固定端側１３０でのみ固定するため、発電装置を振動させた時にフレーム１１０の曲げが磁歪素子１６１の全体に伝わらず減衰してしまい、発電効率が低下するという課題を有している。 However, in the conventional configuration, since the frame 110 and the magnetostrictive element 161 having different longitudinal elastic moduli are fixed only at the fixed end side 130, the bending of the frame 110 is not transmitted to the entire magnetostrictive element 161 when the power generation apparatus is vibrated. It has the problem that it attenuates and power generation efficiency falls.
　本発明は、前記従来の課題を解決するもので、フレーム１１０の曲げを減衰させずに磁歪素子１６１に伝えることで発電効率を向上する発電装置を提供することを目的とする。 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.
　上記目的を達成するために、磁歪材料からなる磁歪素子と、上記磁歪素子が挿入されるコイルと、上記磁歪素子が配置され、長手方向の一方の端部が固定端、上記長手方向の他方の端部が自由端であるフレームと、上記磁歪素子を上記フレームへ固定する第１接着剤と、上記フレームは配置された磁石と、を有し、上記磁歪素子の上記長手方向の端部には、上記第１接着剤のフィレット部を有する発電装置を用いる。 In order to achieve the above object, 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. Using a power generator having a fillet portion of the first adhesive.
　本発明の発電装置によれば、振動のエネルギーを効率よく電力に変換することが可能となる。 According to the power generator of the present invention, it is possible to efficiently convert vibrational energy into electric power.
図１は、本発明の実施の形態１における発電装置の概略構成図である。FIG. 1 is a schematic configuration diagram of a power generation device according to Embodiment 1 of the present invention. 図２Ａは、本発明の実施の形態１における発電装置の概略ＡＡ´断面図である。FIG. 2A is a schematic AA ′ cross-sectional view of the power generation device according to Embodiment 1 of the present invention. 図２Ｂは、本発明の実施の形態１における発電装置の概略ＢＢ´断面図である。FIG. 2B is a schematic BB ′ cross-sectional view of the power generation device in Embodiment 1 of the present invention. 図２Ｃは、本発明の実施の形態１における発電装置の変形例１の概略ＢＢ´断面図である。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. 図２Ｄは、本発明の実施の形態１における発電装置の変形例２の概略ＢＢ´断面図である。FIG. 2D is a schematic BB ′ cross-sectional view of Modification 2 of the power generation device in Embodiment 1 of the present invention. 図３は、本発明の実施の形態１における発電装置の振動解析モデル図である。FIG. 3 is a vibration analysis model diagram of the power generation device according to Embodiment 1 of the present invention. 図４Ａは、本発明の実施の形態１における発電装置の接着剤ヤング率と磁歪素子ひずみの関係グラフである。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. 図４Ｂは、本発明の実施の形態１における発電装置の接着剤の種類と発電装置の耐久性を表した図である。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. 図４Ｃは、本発明の実施の形態１における発電装置の接着剤の厚みと磁歪素子ひずみの関係グラフである。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. 図５Ａは、本発明の実施の形態２における発電装置の概略ＡＡ´断面図である。FIG. 5A is a schematic AA ′ cross-sectional view of a power generation device according to Embodiment 2 of the present invention. 図５Ｂは、本発明の実施の形態２における発電装置の概略ＢＢ´断面図である。FIG. 5B is a schematic BB ′ cross-sectional view of the power generation device in Embodiment 2 of the present invention. 図５Ｃは、本発明の実施の形態２における発電装置の変形例１の概略ＢＢ´断面図である。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. 図５Ｄは、本発明の実施の形態２における発電装置の変形例２の概略ＢＢ´断面図である。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. 図６は、特許文献１による発電装置の概略構成の側面図である。FIG. 6 is a side view of a schematic configuration of a power generation device according to Patent Document 1. 図７は、特許文献１による発電部の概略構成の断面図である。FIG. 7 is a cross-sectional view of a schematic configuration of a power generation unit according to Patent Document 1.
　以下本発明の実施の形態について、図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　（実施の形態１）
　＜構造＞
　図１は、本発明の実施の形態１における発電装置の概略構成図である。 Embodiment 1
<Structure>
FIG. 1 is a schematic configuration diagram of a power generation device according to Embodiment 1 of the present invention.
　図２Ａは、本発明の実施の形態１における発電装置の概略ＡＡ´断面図であり、図２Ｂは、本発明の実施の形態１における発電装置の概略ＢＢ´断面図、図２Ｃは、本発明の実施の形態１における発電装置の変形例１の概略ＢＢ´断面図、図２Ｄは本発明の実施の形態１における発電装置の変形例２の概略ＢＢ´断面図である。 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, and FIG. 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.
　図１、図２Ａ～図２Ｄにおいて、発電装置１は、フレーム２と、磁歪素子３と、第１接着剤４と、磁石５と、コイル６から構成される。フレーム２と磁歪素子３は、第１接着剤４で貼り付けられており、曲げ方向の磁歪素子３の端部３ａにフィレット部４ａを有し、曲げ方向と垂直な方向にある磁歪素子３の端部３ｂにはフィレット部、または、樹脂などの接着部を形成しない。 In FIGS. 1 and 2A to 2D, 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. In the end 3b, a fillet or a bonding portion such as a resin is not formed.
　第１接着剤４は、フレーム２の上面と磁歪素子３の底面とを接着する。第１接着剤４は、磁歪素子３の底面の全体、または、底面のほとんどを接着する。 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.
　フレーム２と磁歪素子３とは接触しないのが好ましい。 Preferably, the frame 2 and the magnetostrictive element 3 are not in contact with each other.
　この発電装置１の曲げ方向と垂直な方向にある磁歪素子３の端部３ｂに第１接着剤４のフィレット部を形成しない特徴は、図２Ａ、図２Ｂに示すように、フレーム２と磁歪素子３が同じ幅の場合のみならず、図２Ｃに示すように、フレーム２の幅よりも磁歪素子３の幅が狭い場合や、図２Ｄに示すように、フレーム２の幅よりも磁歪素子３の幅が広い場合も、同様である。 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.
　磁歪素子３の端部３ｂにはフィレット部を形成すると、磁歪素子３が曲がりにくい。 When the fillet portion is formed at the end 3 b of the magnetostrictive element 3, the magnetostrictive element 3 does not easily bend.
　なお、曲げ方向は、フレーム２の長手方向である。図２Ｂ～図２Ｄでは、コイル６、磁石５等は略して表示している。 The bending direction is the longitudinal direction of the frame 2. In FIG. 2B to FIG. 2D, the coil 6, the magnet 5 and the like are shown abbreviated.
　＜効果＞
　かかる構成によれば、第１接着剤４でフレーム２と磁歪素子３の底面を接着することにより、磁歪素子３の端部のみでフレーム２と固定する場合よりもフレーム２の曲げを減衰することなく磁歪素子３に伝えることができる。 <Effect>
According to this configuration, by bonding the frame 2 and the bottom surface of the magnetostrictive element 3 with the first adhesive 4, the bending of the frame 2 is attenuated more than in the case where the frame 2 is fixed to the frame 2 only at the end of the magnetostrictive element 3. Can be transmitted to the magnetostrictive element 3.
　また、発電装置１の曲げ方向である磁歪素子３の端部３ａに、第１接着剤４のフィレット部４ａを形成することで、より強固にフレーム２と磁歪素子３を接着できる。 Further, by forming the fillet portion 4 a of the first adhesive 4 at the end 3 a of the magnetostrictive element 3 in the bending direction of the power generation device 1, the frame 2 and the magnetostrictive element 3 can be more firmly adhered.
　さらに、発電装置１の曲げに垂直な方向にある、磁歪素子３の端部３ｂには第１接着剤４のフィレット部を形成しないことで、第１接着剤４のフィレットが磁歪素子３の曲げを阻害することを防ぎ、発電装置１の発電効率を向上することができる。 Furthermore, by not forming the fillet portion of the first adhesive 4 at the end 3 b of the magnetostrictive element 3 in the direction perpendicular to the bending of the power generation device 1, 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.
　なお、本実施の形態において、片持ち梁形状のフレーム２を設けたが、フレームを曲げ、Ｌ字形状やＵ字形状、コの字形状としても良い。 In the present embodiment, although the cantilever-shaped frame 2 is provided, the frame may be bent to be L-shaped, U-shaped, or U-shaped.
　＜振動解析モデル＞
　図３は、実施の形態１における発電装置の振動解析モデル図である。 Vibration analysis model
FIG. 3 is a vibration analysis model diagram of the power generation device in the first embodiment.
　図４Ａは、実施の形態１における発電装置１を図３に示す解析モデルにおいて、第１接着剤４のヤング率を変化させて振動解析した結果の第１接着剤４のヤング率と磁歪素子３のひずみの関係を示す図である。 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.
　図４Ｂは、実施の形態１における発電装置１の第１接着剤４の種類と発電装置１の耐久性実験結果を表した図である。 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.
　図４Ｃは、実施の形態１における発電装置１を、図３に示す解析モデルにおいて、第１接着剤４の厚み（磁歪素子３の下面の第１接着材４の厚み）を変化させて振動解析した結果の第１接着剤４の厚みと磁歪素子のひずみの関係を示す図である。第１接着剤４としては、エポキシ系の接着剤を用いた。しかし、他の接着剤でも同様の傾向があった。 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.
　図３において、発電装置１は、フレーム２と磁歪素子３と第１接着剤４と磁石５とコイル６と錘８からなり、フレーム２の厚みは０．８ｍｍ、幅は８ｍｍの磁性体材料、磁歪素子３の厚みは１ｍｍ、幅８ｍｍの鉄ガリウム系の合金、第１接着剤４の厚みは０．２ｍｍで構成される。 In FIG. 3, 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.
　図４Ａに示すように、第１接着剤４は、ヤング率が大きい程、磁歪素子３のひずみが大きくなることから、ヤング率の大きい材料が好ましい。結果、エポキシ系か、はんだ系がよい。 As shown in FIG. 4A, 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.
　また、図４Ｂに示すように、第１接着層４は、耐久性の観点からエポキシ系か、シリコーン系が望ましい。 Further, as shown in FIG. 4B, it is desirable that the first adhesive layer 4 be an epoxy type or a silicone type from the viewpoint of durability.
　第１接着剤４の厚みについては、図４Ｃに示すように、０．２５ｍｍ以下が望ましい。少なくとも、第１接着剤４の厚みは、磁歪素子３の厚みより薄いのがよい。さらに、第１接着剤４の厚みは、磁歪素子３の厚みの３分の１以下がよく、４分の１以下でもよい。 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.
　結果、エポキシ系樹脂を使用し、厚みは、０．２５ｍｍ以下が好ましい。 As a result, an epoxy resin is used, and the thickness is preferably 0.25 mm or less.
　＜磁歪素子３＞
　磁歪素子３は、磁性材料で構成される板状の部材である。磁性材料の種類は特に限定されるものではないが、例えば鉄ガリウム系の合金、鉄コバルト系の合金を用いることができるが、その他の材料であってもよい。 <Magnetostrictive element 3>
The magnetostrictive element 3 is a plate-like member made of a magnetic material. Although 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.
　また、磁歪素子３は、結晶状態の材料ではなく、アモルファス状態の材料であってもよい。加えて、磁歪素子３は、外力を受けて伸張／収縮するため、延性を有する磁性材料で構成するのが好ましい。 In addition, the magnetostrictive element 3 may not be a crystalline material but an amorphous material. In addition, the magnetostrictive element 3 is preferably made of a ductile magnetic material because it expands / contracts under an external force.
　＜コイル６＞
　コイル６は、磁歪素子３の周囲に空間もしくは接着層を設けて巻かれており、電磁誘導の法則により磁歪素子３内を通過する磁力線の時間変化に比例して、電圧を発生させる。 <Coil 6>
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.
　図２Ａでは、コイル６は、磁歪素子３とフレーム２の積層体を外周を巻くように配置されている。 In FIG. 2A, 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.
　コイル６の材質は特に限定されるものではないが、例えば銅線、アルミ線を用いることができる。また、コイル６の巻き数を変更することにより電圧の大きさを調整できる。 Although 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.
　なお、本実施の形態においてコイル６は１つ設けたが、コイルは２つ以上に分割して設けても良い。 Although one coil 6 is provided in the present embodiment, the coil may be divided into two or more.
　＜磁石５＞
　磁石５は、磁歪素子３に対向してフレーム２に固定することで磁気回路が形成される。 <Magnet 5>
The magnet 5 faces the magnetostrictive element 3 and is fixed to the frame 2 to form a magnetic circuit.
　なお、本実施の形態１では、磁石５はネオジウム系の永久磁石を使用するが、フェライト系、コバルト系など、特に限定されるものではない。また、本実施の形態１では磁石５は磁歪素子３を対向して固定しているが、片側に１つ固定しても磁気回路は形成されるので、１つでもよい。 In the first embodiment, 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. In the first embodiment, 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.
　＜錘８＞
　錘８は、透磁率の低い磁性材料もしくは、非磁性材料からなる。発電装置１の自由端側のフレーム２に磁歪素子３の軸上に固定されており、複数個重ねて固定してもよい。 <Weight 8>
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.
　本実施の形態１においては、エポキシ系の第１接着剤４を使用して固定しているが、特に限定されるものではなく、ボルトなどで機械的に固定してもよい。また、本実施の形態１では錘を設けているが、設けなくても良い。 In the first embodiment, 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.
　（実施の形態２）
　実施の形態２の概略の構造は、図１と同様である。実施の形態２の詳細構造は、以下の図で説明する。 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.
　図５Ａは、本発明の実施の形態２における発電装置の概略ＡＡ´断面図である。図５Ｂは、本発明の実施の形態２における発電装置の概略ＢＢ´断面図である。図５Ｃは、本発明の実施の形態２における発電装置の変形例１の概略ＢＢ´断面図である。図５Ｄは、本発明の実施の形態２における発電装置の変形例２の概略ＢＢ´断面図である。図５Ａ～図５Ｄにおいて、図１と同じ構成要素については同じ符号を用い、説明を省略する。説明しない事項は、実施の形態１と同様である。 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. In FIG. 5A to FIG. 5D, 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.
　図５Ａにおいて、発電装置１はフレーム２と、磁歪素子３と、第１接着剤４と、磁石５と、コイル６と第２接着剤１０から形成される。なお、磁石５と、コイル６は、実施の形態１と同様であり、図示していない。第２接着剤１０は、発電装置１の曲げ方向と垂直な方向にある磁歪素子３の端部３ｂに形成し、フレーム２と磁歪素子３を固定する。第２接着剤１０は磁歪素子３の曲げを阻害しないように、シリコーン系の樹脂を材料に用いる。 In FIG. 5A, 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. In addition, 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.
　少なくとも、第１接着剤４のヤング率は、第２接着剤１０のヤング率より、大きいのがよい。ヤング率が１００倍以上異なるとよい。 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.
　第２接着剤１０は、フレーム２と磁歪素子３が同じ幅の場合、図５Ｂに示すように、発電装置１の曲げ方向と垂直な方向にある磁歪素子３の端面とフレーム２の端面を固定するように形成する。 When the frame 2 and the magnetostrictive element 3 have the same width, as shown in FIG. 5B, 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.
　また、フレーム２の幅よりも磁歪素子３の幅が狭い場合、第２接着剤１０は、図５Ｃに示すように、磁歪素子３の端面とフレーム２の磁歪素子３側の面を固定するように形成する。 When the width of the magnetostrictive element 3 is narrower than the width of the frame 2, 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.
　さらに、フレーム２の幅よりも磁歪素子３の幅が広い場合、第２接着剤１０は、図５Ｄに示すように、磁歪素子３のフレーム２側の面と、フレーム２の端面を固定するように形成する。 Furthermore, when the width of the magnetostrictive element 3 is wider than the width of the frame 2, 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.
　なお、図５Ｂ～図５Ｄでは、コイル６、磁石５等は略して表示している。 In FIG. 5B to FIG. 5D, the coil 6, the magnet 5 and the like are abbreviated.
　（全体として）
　実施の形態１，２は、組み合わせることができる。 (as a whole)
Embodiments 1 and 2 can be combined.
　実施の形態１，２では、フレーム２は、直線の棒状であったが、湾曲、Ｕ字形状のフレームでもよい。 In the first and second embodiments, the frame 2 is a straight rod, but may be a curved or U-shaped frame.
　本発明の発電装置は、発電効率を向上することが可能であり、産業分野、防犯・防災分野、社会インフラ分野、医療・福祉分野などで多くの利用シーンが想定されているＩｏＴにおいて、キーコンポーネントである無線センサーモジュールへの適用に対して特に有用である。 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
　１　発電装置
　２　フレーム
　３　磁歪素子
　３ａ　端部
　３ｂ　端部
　４　第１接着剤
　４ａ　フィレット部
　５　磁石
　６　コイル
　８　錘
　１０　第２接着剤
　１００　発電装置
　１１０　フレーム
　１２０　自由端側
　１３０　固定端側
　１４０　錘
　１６０　発電部
　１６１　磁歪素子
　１６２　コイル
　１６３　磁性板
　１７０　磁石 Reference Signs List 1 power generator 2 frame 3 magnetostrictive element 3 a end 3 b end 4 first adhesive 4 a fillet 5 magnet 6 coil 8 weight 10 second adhesive 100 power generator 110 frame 120 free end side 130 fixed end side 140 weight 160 power generation Part 161 Magnetostrictive element 162 Coil 163 Magnetic plate 170 Magnet

Claims (8)

  1. 磁歪材料からなる磁歪素子と、
    前記磁歪素子が挿入されるコイルと、
    前記磁歪素子が配置され、長手方向の一方の端部が固定端、前記長手方向の他方の端部が自由端であるフレームと、
    前記磁歪素子を前記フレームへ固定する第１接着剤と、
    前記フレームは配置された磁石と、を有し、
    前記磁歪素子の前記長手方向の端部には、前記第１接着剤で形成されたフィレット部を有する発電装置。     A magnetostrictive element made of a magnetostrictive material,
    A coil into which the magnetostrictive element is inserted;
    A frame in which the magnetostrictive element is disposed, and one end in the longitudinal direction is a fixed end, and the other end in the longitudinal direction is a free end;
    A first adhesive for fixing the magnetostrictive element to the frame;
    The frame has a disposed magnet;
    The electric power generating apparatus which has the fillet part formed with the said 1st adhesive agent at the edge part of the said longitudinal direction of the said magnetostriction element.
  2. 前記磁歪素子と前記フレームとの間には、前記第１接着剤の層があり、前記磁歪素子と前記フレームとは接触しない請求項１記載の発電装置。 The power generation apparatus according to claim 1, wherein a layer of the first adhesive is provided between the magnetostrictive element and the frame, and the magnetostrictive element is not in contact with the frame.
  3. 前記長手方向と垂直な方向にある前記磁歪素子の端部には前記第１接着剤のフィレット部を形成しない請求項１記載の発電装置。 The power generation apparatus according to claim 1, wherein a fillet portion of the first adhesive is not formed at an end portion of the magnetostrictive element which is in a direction perpendicular to the longitudinal direction.
  4. 前記第１接着剤がエポキシ樹脂である請求項１に記載の発電装置。 The power generator according to claim 1, wherein the first adhesive is an epoxy resin.
  5. 前記長手方向と垂直な方向にある前記磁歪素子の端部には、前記第１接着材と異なる第２接着剤で前記磁歪素子を固定する請求項１に記載の発電装置。 The power generation device according to claim 1, wherein the magnetostrictive element is fixed to an end portion of the magnetostrictive element in a direction perpendicular to the longitudinal direction with a second adhesive different from the first adhesive.
  6. 前記第１接着剤のヤング率は、前記第２接着剤のヤング率より、大きい請求項５記載の発電装置。 The power generation device according to claim 5, wherein Young's modulus of the first adhesive is larger than Young's modulus of the second adhesive.
  7. 前記第２接着剤がシリコーン樹脂である請求項５記載の発電装置。 The power generator according to claim 5, wherein the second adhesive is a silicone resin.
  8. 前記第１接着剤の前記磁歪素子の底面部での厚みは、前記磁歪素子より薄い請求項１に記載の発電装置。 The electric power generating apparatus according to claim 1, wherein a thickness of the first adhesive at a bottom surface portion of the magnetostrictive element is thinner than the magnetostrictive element.
PCT/JP2018/041896 2017-12-27 2018-11-13 Power generation device WO2019130862A1 (en)

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