Battery Buffering Material With Collapsible Hollow Protrusions
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Solution Overview
Problem
Conventional battery buffering materials experience sudden increases in reaction force and inadequate heat insulation when subjected to large compression ratios, particularly due to external forces, which can damage batteries and compromise thermal management.
Innovation Solution
A battery buffering material with hollow conical or spherical segment protruding portions on both surfaces that collapse elastically to absorb external forces, maintaining a stable reaction force and securing air layers for insulation, even under high compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compression ratio due to external force increases, then the buffering capacity increases, but the reaction force increases suddenly and becomes excessively large
Solution Approach 1:
The buffering material is divided into multiple hollow protruding portions distributed across the structure. Each protruding portion acts as an independent buffering unit that collapses sequentially under load, distributing the compression force across multiple elements rather than concentrating it in one location. This segmentation prevents sudden reaction force increases while maintaining effective buffering capacity.
Solution Approach 2:
The buffering material incorporates hollow protruding portions with internal cavities, creating a porous-like structure. These hollow spaces allow the material to compress more gradually as air or gas escapes from the cavities during compression, preventing sudden reaction force spikes. The porous structure enables progressive collapse while maintaining buffering effectiveness.
2Reliability
If the compression ratio increases to improve buffering, then the air layer is compressed out, but the heat insulating effect is insufficient
Solution Approach 1:
The air layer is segmented into multiple smaller hollow cavities within the protruding portions rather than one large continuous air layer. This segmentation allows the air to be distributed and retained in multiple small spaces even under compression, maintaining heat insulation properties while providing buffering capacity. The segmented structure prevents complete air layer collapse.
Solution Approach 2:
The hollow protruding portions create a porous structure that traps air within the cavities. This porous architecture maintains air pockets that provide thermal insulation while allowing the overall structure to compress for buffering. The porous design ensures air layers remain present even under high compression ratios.
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 material effectively suppresses sudden increases in reaction force and maintains heat insulation by securing air layers, protecting batteries from damage and ensuring thermal stability.
Implementation Method 1
front surface protruding portions extending on the side of a front surface thereof and back surface protruding portions extending on the side of a back surface thereof, wherein the front surface protruding portions and the back surface protruding portions have a hollow conical shape or a hollow spherical segment shape, and the front surface protruding portions and the back surface protruding portions collapse when an external force due to expansion of the members is applied to the battery buffering material
Implementation Method 2
when the compression ratio due to an external force such as a load increases, there is a tendency that the air layer hardly remains. Therefore, there is a concern that the heat insulating effect by the air layer is not sufficiently exhibited
Data Source
AI summary
A battery buffering material which prevents a reaction force from increasing suddenly even when the compression ratio is large, and maintains its heat insulating performance is provided. A battery buffering material 100 is a buffering material disposed between adjacent members which constitute a battery, includes a sheet-like structure made of an elastic material, and front surface protruding portions 21 extending on the side of a front surface 11 thereof and the back surface protruding portions 22 extending on the side of a back surface 13 thereof, wherein the front surface protruding portions and the back surface protruding portions have a hollow conical shape or a hollow spherical segment shape, and the front surface protruding portions 21 and the back surface protruding portions 22 collapse when an external force due to expansion of the members is applied to the battery buffering material.