Electrostatic Generator With Insulating Film And Conductor Layer
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Solution Overview
Problem
Conventional electrostatic generators with electret films face inefficiencies in power generation due to limitations in electrostatic capacitance and charge induction, particularly when exposed to vibrations, and are prone to electrode breakage and reduced efficiency from dust abrasion.
Innovation Solution
The electrostatic generator incorporates interdigitally formed electrodes and an electret film with insulating films made of silicon oxide or silicon nitride, which enhance electrostatic capacitance and protect against dust-induced abrasion, along with a conductor layer on the electret film to manage electric fields and prevent charge leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional electrostatic generators use electret films without insulating films on electrodes, then the structure is simpler, but electrode breakage occurs and power generation efficiency is reduced due to dust abrasion
Solution Approach 1:
The patent applies composite materials by combining the electret film with insulating films (such as silicon oxide or silicon nitride) and conductor layers to create a multi-layer structure. This composite approach protects the electrode from dust abrasion and breakage while maintaining the electret film's charge induction properties, thus improving reliability without significantly complicating manufacturing
Solution Approach 2:
The insulating film is applied beforehand to the electrode surface to create a protective barrier against dust particles. This prior cushioning prevents direct contact between dust and the electrode, reducing abrasion and preventing breakage before they can occur during operation
2Ease of manufacture
If conventional electrostatic generators lack insulating films on electrodes, then manufacturing is easier, but power generation efficiency is reduced due to limited electrostatic capacitance
Solution Approach 1:
By creating a composite structure with insulating films and conductor layers, the electrostatic capacitance is enhanced. The insulating film with high dielectric constant increases capacitance, allowing greater charge storage and induction, thereby improving power generation efficiency while maintaining manufacturing feasibility
Solution Approach 2:
The patent changes the dielectric parameters by introducing insulating films with high dielectric constants (such as silicon oxide or silicon nitride). This parameter change increases the electrostatic capacitance of the system, enabling more efficient charge induction and power generation without complicating the manufacturing process
3Device complexity
If the electrostatic generator uses electret film without conductor layer, then structure is simpler, but charge leakage occurs and efficiency is reduced
Solution Approach 1:
The conductor layer is integrated into the composite multi-layer structure, forming an electric field management system that prevents charge leakage. This adds minimal structural complexity while significantly improving charge induction efficiency by ensuring proper charge distribution and preventing unwanted discharge paths
4Device complexity
If conventional electrostatic generators operate without insulating protection, then device is simpler, but dust abrasion reduces efficiency over time
Solution Approach 1:
The insulating film serves as a protective barrier applied beforehand to shield the electrode and electret film from dust particles. This prior cushioning prevents abrasion damage that would otherwise reduce efficiency over time, maintaining long-term power generation performance with minimal added complexity
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
This configuration increases power generation efficiency by optimizing electrostatic capacitance and reducing electrode breakage, while maintaining high dielectric constants to enhance charge induction and stability.
Implementation Method 1
a relative position of the electrodes to the electret film is changed, whereby charges induced in the electrodes are changed and the changed charges are outputted as a current
Implementation Method 2
insulating films made of silicon oxide or silicon nitride, which enhance electrostatic capacitance
Implementation Method 3
an insulating film on an electret side provided on the surface of the electret film and a surface of the conductor layer
Data Source
AI summary
An electrostatic generator includes a substrate, an electrode formed on or in a surface of the substrate, an electret film provided so as to be opposed to the electrode and an insulating film on an electrode side formed on a surface of the electrode on a side opposed to the electret film.