Anisotropic Dielectric Power Generation Element
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Solution Overview
Problem
Increasing the relative dielectric constant between electrodes in electrostatic induction type power generation elements leads to increased parasitic capacitance, resulting in power generation loss and insufficient generated power.
Innovation Solution
Incorporating an anisotropic dielectric substance with a larger relative dielectric constant orthogonal to the opposing surfaces between the substrates and conductors, such as liquid crystal, to suppress parasitic capacitance while maintaining high power generation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a dielectric body with high relative dielectric constant is provided between the electrodes, then the induced electromotive force is increased, but the parasitic capacitance between the electrodes is also increased, resulting in power generation loss
Solution Approach 1:
The patent applies local quality by using anisotropic dielectric material with different dielectric constants in different directions. Specifically, the dielectric material has a high dielectric constant in the direction orthogonal to the electrode surfaces (to increase induced electromotive force) and a low dielectric constant in the direction parallel to the electrode surfaces (to suppress parasitic capacitance). This directional differentiation of material properties resolves the contradiction between increasing power output and reducing energy loss.
Solution Approach 2:
The patent changes the dielectric parameter of the material between electrodes from an isotropic constant value to an anisotropic value with direction-dependent properties. By selecting a dielectric material whose dielectric constant varies with direction (specifically, ε⊥ > ε∥), the system achieves both high induced electromotive force and low parasitic capacitance, thereby resolving the technical contradiction.
2Power
If the relative dielectric constant between electrodes is increased to increase generated power, then the induced electromotive force increases, but the parasitic capacitance increases causing insufficient generated power
Solution Approach 1:
The patent uses anisotropic dielectric material that provides high dielectric constant locally in the direction needed for power generation (orthogonal to electrodes) while maintaining low dielectric constant in the direction that causes parasitic effects (parallel to electrodes). This spatial and directional differentiation allows the system to achieve high generated power without the penalty of increased parasitic capacitance.
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 approach effectively reduces parasitic capacitance and increases the amount of generated power that can be extracted, enhancing the overall efficiency of the power generation process.
Implementation Method 1
an electrostatic induction type power generation element which coverts kinetic energy to electric energy
Implementation Method 2
a substance provided between the opposing substrates and between the charge retaining unit and the conductor, the substance having an anisotropic dielectric constant so that a relative dielectric constant in the direction orthogonal to the opposing surfaces is larger than a relative dielectric constant in the direction parallel to the opposing surfaces
Implementation Method 3
a parasitic capacitance between the electrodes where the induced electromotive force is generated (electrodes facing to the electret) is also increased
Data Source
AI summary
An electrostatic induction type power generation element is capable of increasing the amount of generated power while suppressing a parasitic capacitance between electrodes between which induced electromotive force is generated. An electrostatic induction type power generation element in one embodiment includes: substrates which are opposed to each other and which move relative to each other in a direction parallel to the opposing surfaces of the substrates; a charge retaining unit and conductors which are respectively formed on the opposing surfaces of the substrates; and a substance which is interposed between the substrates opposed to each other and between the charge retaining unit and the conductors, and which has an anisotropic dielectric constant in which a relative dielectric constant in the direction parallel to the opposing surfaces is higher than a relative dielectric constant in a direction orthogonal to the opposing surfaces.