Conductive Coating Heating Element for Uniform Vehicle Seat Heat Distribution
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Solution Overview
Problem
Existing surface heating elements for vehicle seats face challenges such as breakage, overheating, and complex production processes, and they struggle to be easily integrated into control systems and achieve uniform, controlled heat distribution with varying geometries.
Innovation Solution
An electrically conductive coating is applied in a network or grid structure to a carrier layer, allowing for adjustable electrical resistance by modifying the shape and thickness of the coating, enabling precise temperature control and integration with standard seat heating controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stranded heating elements are used, then heating function is provided, but they are prone to breakage and have large unheated areas between strands
Solution Approach 1:
The patent replaces traditional mechanical stranded wire heating elements with an electrically conductive coating layer applied directly to the carrier material. This coating forms continuous heating traces that eliminate the mechanical vulnerabilities of stranded wires while providing uniform heat distribution across the entire surface area.
Solution Approach 2:
The patent changes the physical state and distribution of heating material from discrete stranded wires to a continuous conductive coating layer. This parameter change eliminates gaps between heating elements and creates a uniform heating surface, resolving the issue of unheated areas while improving reliability.
2Ease of operation
If electrically conductive threads are made very thin to maintain flexibility, then flexibility is improved, but manufacturing becomes difficult and overheating/cracking occurs
Solution Approach 1:
The patent replaces the mechanical construction of thin conductive threads with an applied electrically conductive coating layer. This substitution maintains flexibility while eliminating manufacturing difficulties and overheating issues associated with thin threads, as the coating can be applied uniformly using standard coating processes.
3Use of energy by moving object
If carbon fiber fabric with high electrical resistance is used, then heating mat can be supplied with electricity, but uniform heat distribution requires very high uniformity requirements complicating manufacturing
Solution Approach 1:
The patent replaces carbon fiber fabric with an electrically conductive coating applied to a carrier material. This substitution provides more consistent electrical properties and simplifies manufacturing, as the coating can be precisely controlled in thickness and conductivity without the variability inherent in carbon fiber fabric production.
4Adaptability or versatility
If heating wires are embedded in textile material, then heating function is integrated, but the structure becomes complex and resistance adjustment is not possible
Solution Approach 1:
The patent merges the heating function directly into the carrier material by applying an electrically conductive coating layer to its surface. This integration eliminates the need for separate embedded heating wires and complex interconnections, simplifying the overall structure while maintaining functional integration.
5Adaptability or versatility
If standard seat heating controls are used, then control system compatibility is improved, but precise temperature control and uniform heat distribution are difficult to achieve
Solution Approach 1:
The patent optimizes the electrical resistance parameters of the conductive coating to achieve uniform current density and heat distribution. By carefully controlling coating thickness and conductivity, the system achieves precise temperature control that works seamlessly with standard seat heating controls, resolving the contradiction between compatibility and precision.
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 break-proof and resistant heating surface that can be easily integrated into control systems, achieving uniform and controlled heat distribution across different geometries, ensuring efficient operation with commercially available seat heating controls.
Implementation Method 1
at least a partial surface of the carrier layer is covered with an electrically conductive coating... allowing for adjustable electrical resistance by modifying the shape and thickness of the coating
Data Source
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AI summary
Disclosed is an electrically heatable sheet-type element comprising an electrically conductive coating which is applied to an electrically insulating support layer, more specifically to at least one subarea of the support layer, in a mesh or grating structure between the electrodes that forms loops and knots. The total electrical resistance of the sheet-type element can be adjusted by varying the shape of the mesh or grating and by varying the thickness of the applied layer, said thickness being adapted to the shape of the grating.