Triboelectric Generator With Angular Stopper for Oscillatory Motion
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Solution Overview
Problem
Conventional rotating triboelectric generators are inefficient at converting small oscillating rotational movements into electrical energy, as they require continuous, high-speed rotation and perform poorly with small angular movements.
Innovation Solution
A triboelectric energy generator with a stopper mechanism that restricts the rotational movement of a rotor relative to a stator, maximizing contact duration and overlap area, allowing efficient power generation from small periodic rotational movements by limiting rotation to a specific angular range, thereby enhancing power output from oscillatory motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional rotating triboelectric generators are used to convert rotational movements into electrical energy, then continuous high-speed rotation is required, but small oscillating rotational movements cannot be efficiently converted
Solution Approach 1:
The invention introduces a stopper mechanism that dynamically limits the rotor's rotational range to a specific angular interval, transforming the continuous rotation requirement into a controlled oscillatory motion within a limited range. This dynamic constraint allows the generator to efficiently convert small oscillating rotational movements by maximizing contact duration between triboelectric layers while preventing excessive rotation that would reduce conversion efficiency
Solution Approach 2:
The invention changes the operational parameter from continuous high-speed rotation to limited-range oscillatory motion. By constraining the rotation angle through the stopper mechanism, the system optimizes the contact time and overlap area between triboelectric layers, thereby improving energy conversion efficiency for small angular movements without requiring high rotational speeds
2Duration of action of moving object
If the rotor is allowed to rotate freely, then continuous rotation is possible, but contact duration and overlap area are reduced for small angular movements
Solution Approach 1:
The invention extracts the rotational freedom from the system by introducing a stopper mechanism that removes the ability of the rotor to rotate beyond a specific angular range. This extraction of excessive rotational freedom concentrates the motion into a limited range, thereby maximizing contact duration between triboelectric layers during small oscillatory movements
Solution Approach 2:
The stopper mechanism performs a preliminary action by pre-establishing the maximum rotational limits before the rotor can complete a full rotation. This preliminary constraint ensures that the rotor naturally oscillates within the optimal angular range, maximizing contact duration without requiring complex active control systems
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 triboelectric energy generator effectively converts small periodic rotational movements into electricity, optimizing energy generation for angular movements of less than 360 degrees, and provides an energy-damping effect to remove unwanted frequencies, such as rattling noises.
Implementation Method 1
The triboelectric effect (also known as triboelectric charging) is a contact-induced electrification in which a material becomes electrically charged after it is contacted with a different material through friction
Implementation Method 2
If an electrical load is connected between electrodes placed at the backside of the two material surfaces, any further displacement of the sheets, either laterally or perpendicularly, will induce in response a current flow between the two electrodes. This is simply an example of electrostatic induction
Implementation Method 3
a stopper arranged to limit rotation of the second generating element with respect to the first generating element
Data Source
AI summary
A triboelectric energy generator (1) comprises a first generating element (8) and a second generating element (10). The first generating element comprises a first triboelectric material (9) and the second generating element comprises a second triboelectric material (13). Movement of the second generation element relative to the first generation element results in an output voltage, as a consequence of the triboelectric effect. A stopper (7) is configured to restrict rotation of the second generating element, so that the second generating element may only rotate through a desired angle.