发明名称 |
Multi-frequency piezoelectric energy harvester |
摘要 |
A piezoelectric device connected to a vibration source converts vibration energy to electrical current. A plurality of pairs of oppositely polarized piezoelectric wafers deflect to produce an electrical current. Each pair of wafers are arranged back-to-back and electrically joined together. The plurality of pairs of wafers are each connected to a set of micro-machined parts. Each pair of wafers form a bimorph, configured as a cantilevered beam attached to a set of parts to form an element. Each cantilevered beam has a mass weighted first end and is fixedly attached to one or more flexible sheaths on a second end. A plurality of elements form a cell unit. A plurality of cell units form an array. The electrical current produced varies by the number of elements per cell unit, and/or with the number of cell units per array.
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申请公布号 |
US6858970(B2) |
申请公布日期 |
2005.02.22 |
申请号 |
US20020274577 |
申请日期 |
2002.10.21 |
申请人 |
THE BOEING COMPANY |
发明人 |
MALKIN MATTHEW C.;DAVIS CHRISTOPHER L. |
分类号 |
H01L41/113;H02N2/18;(IPC1-7):H01L41/08 |
主分类号 |
H01L41/113 |
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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