Aerogel Battery Insulation Sheet Composition for Thin Durable Heat Barriers
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Solution Overview
Problem
Conventional heat insulating materials, such as expanded polystyrene foam, are vulnerable to fire and emit harmful gases, while aerogels offer excellent heat insulation but are brittle and difficult to process into thin, durable forms suitable for battery insulation.
Innovation Solution
An aerogel composition combining a solvent, fibrous support, and functional materials like binders and dispersants, with specific weight ratios, to create a battery insulation sheet with enhanced heat insulation, durability, and reduced dusting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat insulating materials like expanded polystyrene foam are used, then heat insulation is provided, but they are vulnerable to fire and emit harmful gases
Solution Approach 1:
The patent combines aerogel particles with a binder matrix to create a composite insulation material that maintains the excellent thermal insulation properties of aerogel while adding structural integrity and fire resistance through the binder system
Solution Approach 2:
The patent utilizes the porous structure of aerogel particles to provide superior heat insulation through trapped air pockets, while the controlled porosity and binder integration prevent fire propagation and harmful gas release
2Temperature
If aerogel is used for heat insulation, then excellent heat insulation is achieved, but it is brittle and difficult to process into thin, durable forms
Solution Approach 1:
The patent creates a composite material where aerogel particles are dispersed in a binder matrix, combining the thermal insulation advantages of aerogel with the mechanical strength and processability of the binder, enabling thin and durable insulation sheets
Solution Approach 2:
The patent optimizes parameters including aerogel particle size distribution, binder composition, and curing conditions to transform brittle aerogel into a processable, durable composite material that can be manufactured into thin sheets
3Temperature
If aerogel composition is used, then heat insulation and durability are improved, but manufacturing costs may increase
Solution Approach 1:
The patent optimizes the aerogel content, particle size, and binder ratio to achieve the minimum effective concentration for thermal insulation, reducing material costs while maintaining performance
Solution Approach 2:
The patent utilizes the high porosity and low density of aerogel to provide superior insulation with minimal material quantity, reducing overall manufacturing costs despite the premium price of aerogel
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 aerogel composition achieves excellent heat insulation and durability while minimizing manufacturing and operational dust, and is cost-effective, effectively preventing heat transfer between battery cells.
Implementation Method 1
adjacent cells should be thermally insulated from each other
Data Source
Figure 1~2
Figure 3
AI summary
An aerogel composition for a battery insulation sheet is provided. The aerogel composition comprising: a solvent; a fibrous support; an aerogel; and a functional material including a binder, a dispersant, or a combination thereof. With respect to a total solid content of the aerogel composition, the fibrous support is present in a content range of 5 wt% to 70 wt%, the aerogel is present in a content range of 10 wt% to 90 wt%, and the functional material is present in a content range of 0.5 wt% to 20 wt%.