Piezoelectric Generator Ionic Ring Energy Harvesting
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Solution Overview
Problem
The increasing energy demands of portable electronic devices due to more intensive hardware, such as touchscreens and multicore processors, put pressure on smaller and lighter batteries, leading to reduced energy density and shorter battery life, necessitating more frequent charging.
Innovation Solution
A piezoelectric generator using an ionic ring comprising piezoelectric elements that convert mechanical deformation into electrical energy, either to charge a battery or power electronic components directly, by arranging dipoles to create a zero net dipole moment in an unactuated state and a net dipole moment in an actuated state, with electrodes to conduct this energy and an energy harvesting circuit to capture and store it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If batteries are made smaller and lighter to reduce device weight and size, then device portability is improved, but energy density decreases and battery life is reduced
Solution Approach 1:
The piezoelectric generator enables the portable device to generate its own electrical energy through mechanical deformation during normal use and movement. The device harvests energy from its own operational mechanics, eliminating the need for external charging and effectively extending battery life without increasing device weight or size.
Solution Approach 2:
The piezoelectric elements are configured to dynamically convert mechanical energy from device movement and user interaction into electrical energy. This dynamic energy conversion occurs continuously during device operation, adapting to varying mechanical inputs and providing supplemental power based on actual usage patterns.
2Adaptability or versatility
If more energy intensive hardware is added to portable devices, then device functionality and performance are improved, but energy consumption increases, requiring larger batteries
Solution Approach 1:
The piezoelectric generator provides self-powered energy supplementation by harvesting mechanical energy from device operation. This harvested energy directly offsets the increased power demands from energy-intensive hardware components, reducing the need for larger batteries while maintaining enhanced functionality.
Solution Approach 2:
The piezoelectric elements utilize changes in mechanical stress and deformation parameters during device operation to generate electrical energy. By converting variations in mechanical parameters into electrical output, the system provides adaptive power supplementation that responds to actual operational demands of energy-intensive components.
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 piezoelectric generator provides a sustainable power source for portable devices, extending battery life by generating electricity from mechanical stress, vibrations, or user interactions, reducing the need for frequent charging and enhancing energy efficiency.
Implementation Method 1
a piezoelectric element having a number of dipoles, wherein the dipoles are arranged such that, in an unactuated state of the piezoelectric element, a zero dipole moment is formed by the dipoles of the piezoelectric element and, in an actuated state of the piezoelectric element caused by a force, a net dipole moment is formed by the dipoles of the piezoelectric element
Data Source
AI summary
The present disclosure provides an ionic ring comprising a number of piezoelectric elements, a piezoelectric device including the ionic ring, and a piezoelectric generator including the ionic ring and host devices incorporating the piezoelectric generator. The piezoelectric generator can be used to generate energy on a portable electronic device in response to mechanical deformation. The generated energy can be used instead of a battery of the portable electronic device or can be used to charge the battery.