Piezoelectric generating element and method for estimating power generation amount of piezoelectric generating element
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United States of America Patent
Stats
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Mar 11, 2014
Grant Date -
Sep 5, 2013
app pub date -
Apr 10, 2013
filing date -
Oct 28, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a piezoelectric generating element having an electrode on an outer surface of a piezoelectric ceramic body, wherein the piezoelectric ceramic body has a relative permittivity of 110 to 1700, an elastic compliance of 15 to 150 pm2/N, and a void ratio of 20 to 75%. Preferably, the void ratio is 50 to 75% in the piezoelectric generating element. A crystal particle is modeled as a cube with a length X on a side, a virtual void portion is provided in cube, a void ratio x is calculated based on a thickness t of a frame excluding void portion, a relative permittivity εr and an elastic compliance s are calculated based on void ratio x, and a power generation amount P is estimated. Thereby, a piezoelectric generating element capable of significantly increasing a power generation amount more than before, and a method for estimating a power generation amount of the piezoelectric generating element can be obtained.
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International Classification(s)
- 2013 Application Filing Year
- H01L Class
- 22267 Applications Filed
- 20713 Patents Issued To-Date
- 93.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01L Class
- 0 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 11, 2025 |
