Integrated Fuse Protection Component with Buried Cave for Battery Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Commercial lithium battery sets face challenges in providing comprehensive protection against abnormal charging or discharging conditions, which can lead to fires or explosions, and existing multi-functional fuses may not effectively manage energy release during fuse melting.
Innovation Solution
A protection component comprising a package substrate with a first and second fuse unit and a buried cave, where the energy from one fuse unit's melting can assist in breaking the other, ensuring safe energy dissipation and protection against over-voltage or over-current events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single fuse unit is used for protection, then the device complexity is reduced, but the reliability of protection against over-voltage and over-current events is insufficient
Solution Approach 1:
The patent combines multiple fuse units (first fuse unit and second fuse unit) into a single integrated protection component with shared package substrate and buried cave structure. This merging approach achieves comprehensive protection against both over-voltage and over-current events while maintaining a compact, unified device structure rather than using separate fuse components.
Solution Approach 2:
The protection component is designed with multi-functional capability through the buried cave structure that can assist both the first and second fuse units. The same buried cave serves as energy dissipation chamber for both fuse units, enabling a single structure to perform multiple protection functions simultaneously.
2Area of stationary object
If fuse units are placed close together to save space, then the area is reduced, but the energy release during melting may interfere with each other
Solution Approach 1:
The buried cave acts as an intermediary structure between the first and second fuse units. It serves as a controlled energy dissipation chamber that captures and contains the melting energy from either fuse unit, preventing uncontrolled energy release and interference between the closely positioned fuse units while enabling their compact arrangement.
Solution Approach 2:
The patent converts the potentially harmful melting energy of the fuse units into a beneficial protective mechanism. The buried cave captures the energy released during fuse melting and uses it to assist in breaking the other fuse unit, ensuring complete protection while allowing compact fuse unit placement.
3Reliability
If the buried cave is made larger to accommodate energy dissipation, then the energy dissipation capacity is improved, but the volume of the package increases
Solution Approach 1:
The buried cave is integrated within the package substrate structure in a nested configuration. The cave is formed as an internal cavity within the existing package substrate, utilizing the substrate's volume efficiently rather than adding external volume. This nesting approach provides sufficient energy dissipation capacity while maintaining a compact overall package volume.
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 effectively isolates the lithium battery set from the voltage source, preventing damage by utilizing the energy from one fuse unit's melting to break the other, thus ensuring safe operation and protection against over-voltage or over-current events.
Implementation Method 1
when one of the first and second fusing regions is blown out, the first buried cave assists an energy of fuse melting to break the other of the first and second fusing regions
Data Source
AI summary
A protection component includes: a package substrate; a first fuse unit disposed in the package substrate, having a first fusing region; a second fuse unit disposed in the package substrate, having a second fusing region which is close to the first fusing region; and a first buried cave disposed in the package substrate corresponding to the first and second fusing regions. When one of the first and second fusing regions is blown out, the first buried cave assists energy of fuse melting to break the other of the first and second fusing regions.