JP6203292B2 - 圧電振動エネルギハーベスタ - Google Patents
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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
- H02N2/186—Vibration harvesters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/378—Electrical supply
- A61N1/3785—Electrical supply generated by biological activity or substance, e.g. body movement
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
- H10N30/304—Beam type
- H10N30/306—Cantilevers
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Description
低電力電子部品を動作させる際に用いるためのエネルギハーベスタは、数十年にわたって関心の高い分野である。振動エネルギハーベスタは、すぐ使うためにおよび/または後の使用のための蓄積のために、機械エネルギを電気エネルギなどの何らかの他のエネルギの形態に変換することによって機械的移動と関連付けられるエネルギを集めるように構成され得る。たとえば、圧電材料は、機械的に変形されると電位を生成することができ、電気負荷および蓄積装置に接続されて機械振動からエネルギを収穫することができる。遠隔の場所でまたは電池交換が実際的ではない他の適用例で無線センサを動作させるように、そのようなエネルギハーベスタを用いることができる。エネルギハーベスタは、危険な材料をしばしば含む電池に対する依拠を低減し、かつある場合は電気配線の必要性を低減するようにも役立ち得る。しかしながら、そのようなエネルギハーベスタは、それらを多数の実際的な適用例に不適にしてしまうあるサイズ、周波数、および振幅の一部制約のために幅広い用途に採用されてこなかった。
発明の1つの局面に従うと、振動エネルギハーベスタであって、基部と、圧電材料の層を備えかつ当該基部にある第1の端と第2の端との間に延在する圧電トランスデューサとを備え、圧電トランスデューサの少なくとも一部は第1の端と第2の端との間に往復パターンに配置される、振動エネルギハーベスタが提供される。
以下に記載するように、小型のサイズおよび形状の、特に比較的低い周波数励振で向上した効率および電力出力を有する圧電トランスデューサを用いて振動エネルギハーベスタを構築することができる。トランスデューサには非線形挙動も誘起してもよく、これにより、有用な量の電力を発生することができる周波数範囲が大きくなる。エネルギハーベスタの1つの有用な適用例は、ペースメーカー、植込型除細動器(ICD)、または他の移植可能装置などの生物医学移植装置のための電源としてである。エネルギハーベスタは、十分な量の電力を発生させて振動入力としての胸区域での心拍振動を用いて、近代のペースメーカー中の電池を動作させる、および/またはこれを連続的に再充電するように構成されることができ、主に電池交換のために行なわれる移植後外科的手順を潜在的に排除する。本明細書中に記載されるエネルギハーベスタは、電池の交換が実際的でないまたは不可能である長期間の電子部品適用例などの他の適用例での使用にも適合されてもよい。
Claims (6)
- 振動エネルギハーベスタであって、
基部と、
圧電材料の層を備えかつ前記基部にある第1の端と第2の端との間に延在する圧電トランスデューサとを備え、圧電トランスデューサの少なくとも一部は、第1の端と第2の端との間に往復パターンで配置され、
磁性構成要素とを備え、前記磁性構成要素は、前記磁性構成要素に関連する磁場を有し、
圧電トランスデューサの少なくとも一部は、圧電トランスデューサが非線形の挙動を呈するように磁場内で動作する、振動エネルギハーベスタ。 - 圧電トランスデューサは前記基部にある第1の端と第2の端との間に延在し、かつ圧電材料の層を含み、圧電トランスデューサの少なくとも一部は、第1の端と第2の端との間に往復パターンで配置される、請求項1に記載の振動エネルギハーベスタ。
- 方法であって、
圧電トランスデューサを設けるステップを備え、前記圧電トランスデューサは、入力周波数の範囲にわたって、幾何学的形状に関連した電力出力を有する前記幾何学形状を有し、さらに、
圧電トランスデューサに非線形挙動を誘起して、これにより入力周波数の範囲にわたってトランスデューサの電力出力を増大させるステップとを備え、
前記圧電トランスデューサは、圧電材料の層を備えかつ前記基部にある第1の端と第2の端との間に延在し、
圧電トランスデューサの少なくとも一部はトランスデューサの第1の端と第2の端との間に往復パターンに配置され、
圧電トランスデューサの前記少なくとも一部は、圧電トランスデューサが非線形の挙動を呈するように磁場内で動作する、方法。 - 請求項1または請求項2に記載の非線形圧電エネルギハーベスタを備える、移植可能生物医学装置。
- エネルギハーベスタは心拍波形に応答する、請求項4に記載の移植可能生物医学装置。
- モニタすべき構造への装着のために適合される無線モニタ装置であって、モニタ装置は、構造から振動エネルギを収穫するように構成されかつ圧電材料の層を有する圧電トランスデューサを備える圧電エネルギハーベスタによって電力供給され、圧電トランスデューサの少なくとも一部はトランスデューサの第1の端と第2の端との間に往復パターンに配置され、かつ圧電トランスデューサは非線形挙動を呈する、無線モニタ装置。
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US201361755605P | 2013-01-23 | 2013-01-23 | |
US61/755,605 | 2013-01-23 | ||
PCT/US2014/012690 WO2014116794A1 (en) | 2013-01-23 | 2014-01-23 | Piezoelectric vibrational energy harvester |
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JP2016507898A JP2016507898A (ja) | 2016-03-10 |
JP6203292B2 true JP6203292B2 (ja) | 2017-09-27 |
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US (1) | US9590533B2 (ja) |
EP (1) | EP2948990B1 (ja) |
JP (1) | JP6203292B2 (ja) |
CN (1) | CN105009315B (ja) |
WO (1) | WO2014116794A1 (ja) |
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EP2948990A4 (en) | 2016-09-07 |
US9590533B2 (en) | 2017-03-07 |
EP2948990A1 (en) | 2015-12-02 |
CN105009315A (zh) | 2015-10-28 |
US20150365018A1 (en) | 2015-12-17 |
CN105009315B (zh) | 2018-12-07 |
WO2014116794A1 (en) | 2014-07-31 |
EP2948990B1 (en) | 2021-03-03 |
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