Single-Electrode Sliding Triboelectric Generator for Vector Displacement
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Solution Overview
Problem
Conventional sliding-mode triboelectric generators have complex structures requiring two electrode layers for power generation, increasing manufacturing costs and hindering their development and application.
Innovation Solution
A single electrode type sliding-mode triboelectric generator is developed, where a friction layer with a first conductive layer connected to an isopotential generates electrical energy through relative sliding friction with a second conductive layer, eliminating the need for a second electrode layer and simplifying the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If two electrode layers are used for power generation, then electrical energy output is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts and eliminates one electrode layer from the conventional two-electrode configuration, reducing the generator to a single-electrode system. The first conductive layer serves as the sole electrode that outputs electrical energy, while the second conductive layer functions only as a friction surface, not requiring electrical connection. This extraction principle directly resolves the contradiction by removing unnecessary structural complexity while preserving power generation capability.
Solution Approach 2:
The second conductive layer performs multiple functions: it serves as both the friction surface for charge transfer and the opposing surface for mechanical contact, eliminating the need for a separate second electrode. This multi-functionality allows the system to maintain electrical energy output with reduced structural complexity.
2Power
If two electrode layers are used for power generation, then electrical energy output is achieved, but manufacturing cost increases
Solution Approach 1:
By extracting and eliminating the second electrode layer and its electrical connection requirements, the patent significantly simplifies the manufacturing process. Only the first conductive layer needs to be electrically connected and manufactured with precision, while the second conductive layer can be any conductive material serving purely as a friction surface, reducing material costs and assembly complexity.
3Device complexity
If a single electrode configuration is used, then device complexity and manufacturing cost are reduced, but electrical energy output capability must be maintained
Solution Approach 1:
The friction layer serves as an intermediary between the two conductive layers, facilitating charge transfer through friction. This intermediary mechanism enables the single-electrode system to generate electrical energy by transferring charges from the friction interface to the first conductive layer, which then outputs the electrical energy to the external circuit.
Solution Approach 2:
The patent replaces the conventional mechanical-electrical conversion mechanism (requiring two electrodes) with a triboelectric charge transfer mechanism. The relative sliding friction between the two conductive layers generates surface charges that are transferred to the first conductive layer, which then outputs electrical energy, substituting a simpler mechanical friction-based charge generation for the more complex two-electrode system.
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 single electrode configuration reduces manufacturing complexity and costs, enabling wider applicability in converting mechanical energy into electrical energy, and allows for the creation of a self-powered vector displacement sensor without external power supply.
Implementation Method 1
it is based on account of surface charge transfer due to friction between two different friction materials
Data Source
Figure 1~3
Figure 4~5
Figure 6a~6e
AI summary
The present disclosure provides a sliding-mode triboelectric generator and a method of power generation. The sliding-mode triboelectric generator comprises: a friction layer, a lower surface of which being provided with a first conductive layer, and the first conductive layer being electrically connected to an isopotential; and, a second conductive layer being opposite to an upper surface of the friction layer; wherein, an electrical signal can be outputted between the first conductive layer and the isopotential when a relative sliding, under the action of external force, occurs between the upper surface of the friction layer and the lower surface of the second conductive layer while a friction area changes in the course of the sliding. Correspondingly, the present disclosure provides a vector displacement sensor where the sliding-mode triboelectric generator is applied, wherein the friction layer is formed of a plurality of friction units, a first friction unit electrically connected to the isopotential is provided correspondingly on the lower surface of each friction unit. When the second conductive layer slides on the friction units, position, moving direction and moving distance of the second conductive layer is detectable in accordance with the electrical signal outputted between the first conductive layer and the isopotential. No power supply is required for the sensor.