Electret Vibration Power Generator Wiring Elimination
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Solution Overview
Problem
Conventional vibration power generators face challenges in extracting electrical energy due to the need for wiring from movably held substrates, which can impede vibration and suffer from aged deterioration, and require additional wiring for grounding electrets, complicating the setup.
Innovation Solution
A vibration power generator design that eliminates or simplifies wiring by using a configuration of electrodes with opposing polarity films and electrostatic forces to maintain the substrate's position, allowing for vibration-induced power generation without mechanical springs, and utilizing flexible wiring for grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wiring is drawn out from the conductive surface areas to extract electrical energy, then power generation is enabled, but the wiring impedes vibration and suffers from aged deterioration leading to disconnection
Solution Approach 1:
The patent extracts the electret material from the movable first substrate and places it on the stationary second substrate. This separation allows the movable substrate to vibrate freely without wiring attached to it, while the stationary substrate containing the electret material can have wiring drawn out without impeding motion. The wiring is thus extracted from the moving component and placed on the stationary component, resolving the contradiction between power extraction and vibration freedom.
2Stability of the object's composition
If electrets are provided on the first substrate, then surface potential stabilization is achieved, but additional wiring for grounding the surface potentials is required
Solution Approach 1:
Instead of placing electrets on the movable first substrate as in conventional designs, the patent inverts the arrangement by placing the electret material on the stationary second substrate. This inversion eliminates the need for grounding wiring on the movable substrate, as the electret is now on the stationary side where grounding can be achieved without affecting vibration. The surface potential stability is maintained while the wiring complexity on the moving part is eliminated.
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 design enables efficient power generation with improved mechanical reliability, reduced mechanical disadvantage, and increased output power, while simplifying the structure and eliminating the need for complex wiring setups.
Implementation Method 1
an electrostatic induction type vibration power generator in which an electric charge is applied to one of electrodes of a variable capacity and the electric charge is induced to the other opposing electrodes via the electrostatic induction
Implementation Method 2
a first electrode which is disposed on a lower surface of the first substrate and includes a film retaining electric charges
Data Source
AI summary
A vibration power generator includes a first substrate, a first electrode disposed on a lower surface of the first substrate and including a film retaining electric charges, a second substrate opposing the lower surface of the first substrate, a second electrode disposed on an upper surface of the second substrate, a third electrode disposed on the upper surface of the first substrate and including a film retaining the electric charges, a third substrate opposing the upper surface of the first substrate, and a fourth electrode disposed on a lower surface of the third substrate and opposing the third electrode. The film of the first electrode has a polarity different from a polarity of the film of the third electrode, and the vibration power generator includes a restoring force generation member giving a restoring force when an external force is not exerted to the first substrate.