Piezoelectric Power Generator Slippage Suppression Mechanism
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Solution Overview
Problem
Conventional piezoelectric power generators face challenges in achieving high durability and power generation efficiency due to susceptibility to tensile stress and low deformation of piezoelectric elements, leading to damage and inefficient energy production.
Innovation Solution
A piezoelectric power generator design incorporating a first elastic body and a power-generating element with a second elastic body and a piezoelectric element, featuring a slippage suppression mechanism such as a stopper or rough surface to prevent slipping and tensile stress, allowing for greater deformation and improved energy generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the piezoelectric element is fixed directly to the elastic body, then the structure is simple, but the piezoelectric element is susceptible to tensile stress and easily damaged
Solution Approach 1:
A second elastic body is introduced as an intermediary between the first elastic body and the piezoelectric element. This second elastic body includes a fixing portion and an abutting portion, where the abutting portion is not fixed to the first elastic body but can move relative to it. This intermediary structure prevents direct transmission of tensile stress to the piezoelectric element while maintaining structural simplicity.
2Stability of the object's composition
If the abutting portion is fixed to the first elastic body, then the structure is stable, but the piezoelectric element cannot deform sufficiently for high power generation efficiency
Solution Approach 1:
The abutting portion is designed to be movable relative to the first elastic body rather than fixed. When the first elastic body deforms, the abutting portion can move dynamically, allowing the piezoelectric element to deform sufficiently for high power generation efficiency while the fixing portion maintains overall structural stability.
3Ease of operation
If the abutting portion slips relative to the first elastic body during deformation, then the structure allows movement, but the power generation efficiency is insufficient
Solution Approach 1:
The second elastic body is segmented into a fixing portion and an abutting portion. The fixing portion is fixed to the first elastic body to maintain position, while the abutting portion is not fixed and can move relative to the first elastic body. This segmentation allows controlled movement for power generation while preventing harmful slipping through the specific arrangement of these segments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances durability and power generation efficiency by suppressing slipping and tensile stress on the piezoelectric element, enabling higher energy output and longer device lifespan.
Implementation Method 1
piezoelectric power generators that utilize the piezoelectric effect have been the focus of much attention
Data Source
AI summary
A piezoelectric power generator having a first elastic body which deforms along a first direction when subject to a stress, and a power-generating element. The power-generating element includes a second elastic body and a piezoelectric element. The second elastic body includes a fixing portion and an abutting portion. The fixing portion is fixed to the first elastic body. The abutting portion is arranged on one side in a first direction with respect to the fixing portion. The abutting portion abuts against the first elastic body, but is not fixed to the first elastic body. At least one of the first elastic body and the second elastic body is provided with a slippage suppression mechanism that suppresses slipping of the abutting portion with respect to the first elastic body when the first elastic body is deformed.