Electroactive Elastomer Converter Segmented Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electroactive elastomer converters have limited dynamic response and operating characteristics, particularly in high-frequency vibration energy conversion due to their two-dimensionally elastic properties, which restrict their ability to efficiently convert mechanical vibrations into electrical energy.
Innovation Solution
Incorporating a compressible medium, such as air, within openings in the electrode layers, which are non-deformable and have a layered structure with holes or concave recesses, allowing the elastomer to compress locally and enhance the converter's rigidity and capacitance, enabling high-frequency energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-dimensionally elastic electrode layers are used in the multilayer stacked structure, then the elastomer layers can be bonded two-dimensionally to the electrode layers, but the dynamic response is limited and the converter cannot efficiently convert high-frequency mechanical vibrations into electrical energy
Solution Approach 1:
The electrode layers are segmented by introducing openings (holes or recesses) through them, dividing the continuous electrode layer into multiple segments. This segmentation allows the elastomer to compress locally into the openings while maintaining two-dimensional bonding in the surrounding regions, thereby improving dynamic response and high-frequency energy conversion efficiency without sacrificing bonding reliability
Solution Approach 2:
The electrode layers are designed with a porous structure (openings/holes) rather than being completely solid. This porous structure enables the elastomer to deform locally into the openings during compression, enhancing the dynamic response and enabling efficient high-frequency vibration energy conversion while maintaining adequate bonding areas
2Stability of the object's composition
If non-compressible elastomers are used that retain their tare volume under compressive forces, then the elastomer layers maintain their shape, but the lateral expansion properties of electrode layers are restricted
Solution Approach 1:
The compression behavior is moved from the lateral dimension to the thickness dimension by introducing openings through the electrode layers. The elastomer compresses into the openings (thickness direction) while maintaining lateral stability, effectively adding a new dimension for deformation and resolving the contradiction between shape stability and expansion capability
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 solution improves the dynamic response of electroactive elastomer converters by allowing them to effectively convert mechanical vibrations into electrical energy at high frequencies, with increased rigidity and capacitance, making them suitable for applications like vibration absorption and energy harvesting.
Implementation Method 1
The application of a suitably selected electrical voltage to the electrode layers creates attractive electrostatic forces between the electrode layers, which in turn cause the elastomer layers to be compressed, particularly in the thickness direction.
Implementation Method 2
a mechanical deformation of such a multilayer stacked structure in the thickness direction of the individual elastomer layers results in a change in capacitance of the capacitive stacked structure, which is useful for electrical energy generation or an electrical signal pick-up.
Data Source
AI summary
An electroactive elastomer converter is described comprising at least one electroactive elastomer layer (3) with a top side and underside and an electrically conductive electrode body (1′) that is two-dimensionally connected to the top side at least in regions. An electrically conductive electrode body (1′) is dimensionally connected in at least two regions to the underside. At least one electrode body (1′) in each case has an electrode surface facing the elastomer layer (3). At least one opening (2) is present to which an a two-dimensional region in which there is no two-dimensional bond between the elastomer layer (3) and the electrode body (1′). A compressible medium is provided in the area of the opening.