Thermionic Power Element Structure for Uniform Electrode Spacing

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Solution Overview

Problem

Power generation elements, such as thermionic elements, face challenges in maintaining stable characteristics due to distortion from external forces or heat, which makes it difficult to maintain uniform spacing between conductive regions and reduces efficiency.

Innovation Solution

The power generation element incorporates multiple second conductive regions with insulating structure regions between them and a conductive film for stable electrical connection, allowing for independent positioning and deformation to maintain uniform spacing and efficient electron emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conductive regions are rigidly connected to maintain electrical connection, then electrical connection stability is improved, but distortion from external forces or heat causes non-uniform spacing and reduces power generation efficiency

Engineering Contradiction:
Improveelectrical connection stabilityVSAvoidpower generation efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The conductive film is divided into multiple independent connection portions, each connecting adjacent second conductive regions to the first conductive region. This segmentation allows each portion to independently accommodate local distortion while maintaining overall electrical connection stability, resolving the contradiction between connection reliability and power generation efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insulating structure regions are designed to be deformable rather than rigid, allowing them to dynamically adjust their shape and position in response to thermal expansion or external forces. This dynamic adaptation maintains uniform spacing between conductive regions while preserving electrical connection stability through the flexible conductive film.

Inventive Principle:
Principle #15Dynamics

2Productivity

If spacing between conductive regions is maintained uniformly to improve power generation efficiency, then electron emission efficiency is improved, but external forces or heat cause distortion and make uniform spacing difficult to maintain

Engineering Contradiction:
Improvepower generation efficiencyVSAvoiduniform spacing
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The insulating structure regions are designed with specific material properties and geometric parameters (thickness, width, elasticity) that enable them to maintain a target spacing of 1-10 μm between conductive regions. These parameter optimizations allow the structure to resist distortion from external forces and thermal expansion, maintaining uniform spacing for efficient electron emission.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The insulating structure regions act as intermediary elements between the first and second conductive regions, providing controlled spacing while accommodating distortion. These intermediary structures absorb mechanical stress and thermal expansion, preventing direct contact between conductive regions while maintaining optimal spacing for power generation efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If insulating structure regions are added between conductive regions to maintain spacing, then uniform spacing is improved, but device complexity increases

Engineering Contradiction:
Improveuniform spacingVSAvoidstructural complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The insulating structure regions serve multiple functions simultaneously: they provide electrical insulation between conductive regions, maintain uniform spacing, accommodate thermal expansion, and absorb mechanical distortion. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving stable uniform spacing.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 ensures stable and efficient power generation by allowing for uniform spacing and high efficiency even under thermal expansion, reducing useless areas and improving electrical connection stability.

Implementation Method 1

a power generation element such as a thermionic element

Methodology Applied
Scientific EffectThermionic emission: Thermionic Emission

Data Source

PatentUS11855579B2Power generation element
Publication Date: 2023.12.26 KK TOSHIBA
  • US11855579B2 patent drawing
  • US11855579B2 patent drawing
  • US11855579B2 patent drawing

AI summary

According to one embodiment, a power generation element includes a first conductive region including a first surface, a plurality of second conductive regions, and a plurality of insulating structure regions. The second conductive regions are arranged along the first surface. A gap is provided between the second conductive regions and the first surface. One of the structure regions is provided between one of the second conductive regions and the first surface. An other one of the structure regions is provided between an other one of the second conductive regions and the first surface.