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System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials

A piezoelectric material and tire technology, applied in tire measurement, piezoelectric/electrostrictive/magnetostrictive devices, tire parts, etc., can solve problems such as non-existence

Inactive Publication Date: 2004-11-24
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While various tire electronics systems and electrical energy generating devices have been developed, no design has yet emerged that incorporates all of the desirable features that are later proposed from the subject technology

Method used

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  • System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials
  • System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials
  • System for generating electric power from a rotating tire's mechanical energy using reinforced piezoelectric materials

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Embodiment Construction

[0035] Detailed description of the preferred embodiment

[0036] As discussed in the Summary of the Invention, the present subject matter particularly relates to improved systems for charging electronic systems integrated within tire structures. The electrical energy generation device utilizes piezoelectric technology to convert the mechanical strain created by tire flexing into an electrical current, which is then regulated and stored in an energy storage. Sufficient accumulation of this stored energy can power electronic systems such as components used to determine various tire physical parameters and radio frequency (RF) transmitters.

[0037] An electrical energy generating device according to the disclosed technology generally includes elements such as enhanced piezoelectric structures and an electrical energy conditioning module. Aspects of a typical piezoelectric structure are described with reference to FIGS. 2 and 4 , while a typical power conditioning module is pres...

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Abstract

A system for generating electric power from a rotating tire's mechanical energy has a piezoelectric structure and an energy storage device. The structure comprises a plurality of piezoelectric fibers embedded in a generally unidirectional fashion in an epoxy matrix. The structure is mounted on a support substrate for distributing mechanical strain in the piezoelectric structure uniformly. The structure is mounted within a tire for generating electric charge as the wheel moves along a ground surface. Electrode within the piezoelectric structure is coupled to a power module to rectify the electric current and store it in a storage device, f. ex. an electrolytic capacitor or a rechargeable battery. A regulated voltage source receives the generated and stored energy to power various electronic systems integrated in the tire or wheel. A tire monitoring system with wireless transmission of tire pressure, temperature, identification information to a remote receiver.

Description

[0001] priority statement [0002] This application is a continuation of a prior US patent application by the same applicant, entitled "System and Method for Generating Electrical Energy from Rotating Tire Mechanical Energy Using Piezoelectric Fiber Compositions." This application, filed May 10, 2002, with application number USSN 10 / 143535, is hereby incorporated by reference for all purposes. field of invention [0003] The present invention generally relates to systems and methods for subjecting piezoelectric structures to the mechanical energy of conventional tire rotation to generate electrical energy from integral tire electronics. Piezoelectric technology is used to convert the mechanical strain involved in tire flexion into an electrical charge, which is then modulated and stored in an energy storage device. Sufficient accumulation of this stored energy then powers the electronic system, which includes elements for identifying various physical tire parameters and radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L17/00B60C19/00B60C23/04B60K25/08B60K25/10H01L41/113H01L41/187H01L41/193
CPCB60C23/0411B60K25/08B60C23/0493B60K25/10H01L2924/0002H01L2924/00
Inventor J·D·亚当森G·P·奥布赖恩
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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