Separator Asymmetry for Vibration Scattering Prevention
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Solution Overview
Problem
Conventional electrical devices with laminated separators face issues of heat-resistant material scattering during shocks or vibrations, leading to reduced electrical characteristics and potential electrical short circuits.
Innovation Solution
The electrical device incorporates a separator with a heat-resistant material laminated on one surface of a melt material, where the melt material is held by a conveying apparatus, and adjacent separators are welded with their heat-resistant material facing each other, preventing scattering and maintaining electrical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat-resistant material is laminated on both surfaces of the melt material to prevent scattering, then scattering prevention is improved, but the separator layer thickness increases
Solution Approach 1:
The patent applies asymmetry by laminating the heat-resistant material on only one surface of the melt material rather than both surfaces. This asymmetric configuration prevents scattering of heat-resistant material during shocks or vibrations while maintaining the electrical device's functionality, and simultaneously avoids increasing the overall separator layer thickness that would result from bilateral lamination.
2Reliability
If heat-resistant material is laminated on the melt material, then scattering during shocks or vibrations is prevented, but the manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by laminating the heat-resistant material on only one specific surface of the melt material where scattering is most likely to occur during shocks or vibrations. This localized approach provides scattering prevention exactly where needed, rather than uniformly treating both surfaces, thereby reducing the overall structural complexity and material usage while maintaining reliability.
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
This configuration effectively prevents the scattering of heat-resistant material, ensuring the electrical device's stability and maintaining its electrical properties even under vibrations or shocks, by confining the heat-resistant material within the separators and generating friction to suppress electrode displacement.
Implementation Method 1
the separator is conveyed with the side of the melt material being held by a conveying apparatus
Implementation Method 2
The hot-melt layers of the laminated battery are fixed together by thermal welding
Data Source
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Figure 5
AI summary
The present invention provides an electric device that is capable of preventing a heat-resistant material (32) of a separator (30) from scattering even when the electric device vibrates or receives shocks. The electric device has a power generating element formed by alternately laminating a first electrode (10), a second electrode (20) of a polarity different from the first electrode with a separator (30) interposed therebetween. The separator (30) includes a hot-melt material (31) and the heat-resistant material (32) which is laminated only on one surface of the melt material and having a higher melting point than the melt material. The adjacent separators (30) are welded or joined each other with the heat-resistant material thereof facing each other.