发明名称 |
METHOD AND DEVICE FOR ENERGY HARVESTING |
摘要 |
A device (100) harvests energy from vibration and/or strain and utilizes both capacitive (102a, 102b) and piezoelectric elements (105). The principle of operation is out-of-plane capacitive harvester, where the bias voltage for the capacitive element is generated with a piezoelectric element (105). The device utilizes a thin dielectric film (104) between the capacitor plates (102a, 102b) maximizing the harvested energy and enabling the harvester operation in semi-contact mode so that short circuits are prevented. For example when utilized in a wheel or the like, the capacitor is closed and opened at every strike or every turn of a wheel being thus independent of the harvester's mechanical resonance frequency. |
申请公布号 |
EP2485979(B1) |
申请公布日期 |
2016.08.10 |
申请号 |
EP20100821628 |
申请日期 |
2010.10.08 |
申请人 |
MURATA ELECTRONICS OY;TOYOTA MOTOR CORPORATION |
发明人 |
KÄRKKÄINEN, ANNA-MAIJA;KYYNÄRÄINEN, JUKKA;ROSCHIER, LEIF;KUISMA, HEIKKI |
分类号 |
B60C23/04;H01L41/113;H02N1/08;H02N2/18 |
主分类号 |
B60C23/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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