Laminated Ceramic Electrode Fuse Structure for Overcurrent Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laminated ceramic electronic components face issues with short circuits and overcurrents due to thermal and mechanical stresses, leading to potential fuming, firing, and loss of function, which existing technologies fail to adequately address.
Innovation Solution
Incorporating a first electrode portion with a conductive carbon material that functions as a fuse, burning and cutting to block overcurrents and reduce the risk of fuming and firing, while maintaining the component's functionality by using conductive carbon materials like carbon nanotubes or graphite, which decompose at relatively low temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrode materials are used, then electrical conductivity is maintained, but the component is vulnerable to short circuits and overcurrents causing fuming and firing
Solution Approach 1:
The patent applies the fuse concept where the conductive carbon material is intentionally designed to decompose and disconnect under overcurrent conditions. This converts the potentially harmful effect of excessive current into a protective mechanism that prevents fuming and firing by automatically interrupting the circuit when abnormal current levels are detected
Solution Approach 2:
The patent changes the thermal and electrical parameters of the electrode material by using conductive carbon materials with specific decomposition characteristics. The material is selected to have a decomposition temperature and current-carrying capacity that enables it to function as a fuse, transforming the electrode's role from purely conductive to also protective under abnormal conditions
2Reliability
If a fuse mechanism is introduced to block overcurrents, then safety is improved, but the electrode's electrical conductivity may be compromised
Solution Approach 1:
The patent optimizes the parameters of conductive carbon materials to achieve a balance between conductivity and fuse functionality. By selecting materials and compositions with appropriate electrical conductivity and decomposition characteristics, the electrode maintains sufficient conductivity for normal operation while retaining the ability to disconnect under overcurrent conditions
Solution Approach 2:
The patent employs composite electrode structures combining conductive carbon materials with other substances to achieve both high electrical conductivity and fuse properties. The composite formulation allows the electrode to function effectively in normal conditions while providing overcurrent protection through the decomposition characteristics of the carbon material
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 use of conductive carbon materials in the first electrode portion effectively blocks overcurrents, suppresses temperature rises, and reduces the likelihood of fuming and firing, ensuring the laminated ceramic electronic component's functionality is maintained even after the fuse is activated.
Implementation Method 1
conductive carbon materials like carbon nanotubes or graphite, which decompose at relatively low temperatures
Data Source
AI summary
A laminated ceramic electronic component according to the present disclosure includes a laminated body in which ceramic layers and electrode layers are alternately laminated, at least one of the electrode layers including a first electrode portion containing a conductive carbon material.