Curved Surface Heating Device with Optimized Conductive Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional screen printing technologies struggle to maintain the quality of functional structures on components with larger curvatures, leading to unstable conductive patterns and potential circuit failures in heating applications.
Innovation Solution
A curved surface heating device is developed, featuring a protective layer with dielectric properties and a conductive layer with electrothermal properties, applied using a flexible 3D pattern element forming method. The conductive layer consists of a high-conductivity material with a specific volume percentage of conductive metal or carbon-based materials, ensuring stability and continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If screen printing technology is used to form functional structures on curved components, then the manufacturing process is simple and cost-effective, but the quality of conductive patterns becomes unstable and may break or become uneven on components with larger curvatures
Solution Approach 1:
The patent changes the fundamental parameters of the conductive material formulation, using a suspension with specific viscosity (10-100 Pa·s), solid content (30-70 vol%), and particle size (0.1-10 μm) to enable successful screen printing on curved surfaces. This parameter optimization allows the conductive material to flow properly and form continuous patterns on curved components without breaking or becoming uneven.
Solution Approach 2:
The patent employs composite materials by suspending conductive particles (metal or carbon-based) in a specific viscosity medium to create a conductive slurry. This composite formulation combines the advantages of screen printing simplicity with the ability to form stable, continuous conductive patterns on curved surfaces by controlling the suspension's rheological properties.
2Reliability
If the conductive layer thickness is increased to improve continuity on curved surfaces, then the heating effect is enhanced, but the device complexity and material consumption increase
Solution Approach 1:
The patent optimizes the conductive layer thickness parameter to within a specific range (10-50 μm) that balances continuity and heating effectiveness. By controlling the suspension viscosity and applying pressure during screen printing, the patent achieves continuous conductive patterns on curved surfaces without requiring excessive thickness, thus avoiding increased device complexity while maintaining reliable heating performance.
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 provides a stable and continuous conductive layer on curved surfaces, enabling effective temperature control and insulation, while maintaining the integrity of the heating device across various applications, including vehicle parts and lamp covers.
Implementation Method 1
The curved surface heating device can be heated by electrical conduction to maintain a fixed temperature range
Implementation Method 2
The conductive layer... has transparency and electrothermal properties... can be heated by electrical conduction to maintain a fixed temperature range
Implementation Method 3
a protective layer, which is a curved panel shape and has dielectric properties
Data Source
AI summary
A curved surface heating device comprising a curved panel-shaped protective layer, with a conductive layer formed on one side of the protective layer, wherein the conductive layer comprises a conductive metal or a carbon-based material, wherein a volume percentage of the conductive metal is between 30% and 60% and a volume percentage of the carbon-based material is between 30% and 60%, and wherein a thickness of the conductive layer is within 50 micrometers (μm).