Conductive Rubber Connection Member for High-Current Glass Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conductive rubber used for electrical connections in glass plates experiences peeling at adhesive portions due to repulsive forces, leading to increased electric resistance and temperature issues when large currents flow, and existing connector sheets are not suitable for powering applications.
Innovation Solution
A conductive member made of rubber-like elastic material with specific structural features, including a compression set of 50% or less and electric resistance of 0.1Ω or less, is used to create an electrical connection member that maintains low resistance and stability even under compressive deformation and elevated temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive rubber is used to electrically connect the terminal to the feeding part, then electrical connection is achieved, but peeling occurs at the adhesive portion due to repulsive force of the compressed rubber
Solution Approach 1:
The patent introduces a specifically designed adhesive portion as an intermediary between the conductive rubber and the terminal. This adhesive portion has controlled viscosity and curing characteristics that allow it to mediate the stress between the expanding rubber and the rigid terminal, preventing peeling while maintaining electrical connection reliability.
Solution Approach 2:
The patent modifies the parameters of the adhesive portion including viscosity (100-10000 cP), curing temperature (80-120°C), and curing time (1-6 hours) to optimize the balance between accommodating rubber expansion and maintaining bond strength. These parameter changes resolve the contradiction by making the adhesive flexible enough to handle rubber repulsive force while still providing strong bonding.
2Reliability
If conductive rubber is held in compressed state to maintain conductivity, then electrical connection is achieved, but compression set increases over time leading to increased electric resistance
Solution Approach 1:
The patent uses composite materials for the conductive rubber containing conductive fillers (carbon black, metal particles, or conductive polymers) dispersed in a rubber matrix. This composite structure maintains electrical conductivity while the rubber matrix provides elastic recovery to resist permanent compression set, resolving the contradiction between maintaining conductivity and resisting compression deformation.
Solution Approach 2:
The patent designs the conductive rubber with dynamic properties that allow it to continuously adapt to compression while maintaining conductivity. The rubber's viscoelastic characteristics enable it to deform under compression and recover, preventing permanent set while maintaining electrical contact. This dynamic behavior resolves the contradiction between needing compression for conductivity and needing to resist permanent deformation.
3Power
If large current flows through the compressed conductive rubber, then power supply is achieved, but temperature increases due to increased electric resistance from compression set
Solution Approach 1:
The adhesive portion serves as a thermal intermediary that helps dissipate heat generated during high current flow. By controlling the adhesive's thermal properties and bonding area, the patent creates a thermal management path that reduces temperature accumulation at the connection interface, allowing high current flow without excessive temperature rise.
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 enables secure, low-resistance electrical connections between terminals and glass plates, reducing temperature increases during high current flow and maintaining stability over time.
Implementation Method 1
electric resistance between the upper surface and the lower surface is 0.1Ω or less during application of the load
Implementation Method 2
Since the conductive rubber made of a rubber-like elastic material exhibits viscoelasticity, holding the conductive rubber in the compressed state at an elevated temperature for a long time leads to increased compression set
Implementation Method 3
applying a load between the upper surface and the lower surface of the conductive member, and conducting 25% compressive deformation at 105° C. for 22 hours
Implementation Method 4
The electrical connection member comprises an adhesive member and a connecting member connecting the conductive member to the adhesive member
Data Source
AI summary
Provided is an electrical connection member including a conductive member made of a rubber-like elastic material, through which a terminal used for supplying power is mounted to a mounted member such as a glass plate, and electrically connected with a small electric resistance to contact member provided in the mounted member, resulting in less reduction of rubber-like elasticity of the conductive member due to a temperature increase of the electrical connection member, even if large current flows.With respect to the conductive member 11 made of the rubber-like elastic material provided in the electrical connection member 10, a compression set measured after the following treatment is 50% or less, the treatment being comprise applying a load between an upper surface and a lower surface of the conductive member and conducting 25% compressive deformation at 105° C. for 22 hours; and electric resistance between the upper surface and the lower surface is 0.1Ω or less during application of the load.