发明名称 |
System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials |
摘要 |
A system for generating electric power from a rotating tire's mechanical energy concerns a power generation device with a piezoelectric structure and an energy storage device. The piezoelectric structure preferably comprises a plurality of piezoelectric fibers embedded in a generally unidirectional fashion within an epoxy matrix. The piezoelectric structure may be mounted on a support substrate that helps distribute mechanical strain to which the piezoelectric fibers are subjected in a substantially uniform fashion. The piezoelectric structure is preferably mounted within a tire structure such that electric charge is generated therein as the wheel assembly moves along a ground surface. Electrode layers within the piezoelectric structure are coupled to a power conditioning module that rectifies the resultant electric current from the piezoelectric structure and stores it in an energy storage device, preferably an electrolytic capacitor. A rechargeable battery may also be provided for storing additional charge generated within the piezoelectric structure. A regulated voltage source is provided from the energy stored in the power generation device and can be used to power various electronics systems integrated within a tire or wheel assembly. An example of an integrated tire electronics system for use with the disclosed power generation device corresponds to a tire monitoring system that wirelessly transmits such information as tire pressure, temperature and identification variables to a remote receiver location. |
申请公布号 |
US6725713(B2) |
申请公布日期 |
2004.04.27 |
申请号 |
US20030345040 |
申请日期 |
2003.01.15 |
申请人 |
MICHELIN & RECHERCHE ET TECHNIQUE S.A. |
发明人 |
ADAMSON JOHN DAVID;O'BRIEN GEORGE PHILLIPS |
分类号 |
G01L17/00;B60C19/00;B60C23/04;B60K25/08;B60K25/10;H01L41/113;H01L41/187;H01L41/193;(IPC1-7):G01M17/02;B60C23/02 |
主分类号 |
G01L17/00 |
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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