Acrylic-Silicone Coating Composition for Battery Fire Propagation Delay
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Solution Overview
Problem
Existing automobile battery technologies lack sufficient heat resistance and weather resistance, leading to potential fire propagation issues when temperature increases rapidly.
Innovation Solution
A coating composition comprising an acrylic-silicone resin and a combination of inorganic and liquid flame retardants, along with a foaming agent, to provide heat resistance, weather resistance, and fire propagation delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulating layer is applied to the battery cell housing or fire extinguishing packs are installed between modules, then heat resistance and fire protection are improved, but the structure becomes more complex
Solution Approach 1:
The patent combines multiple functions (insulation, fire protection, and coating) into a single coating composition applied directly to the battery cell housing. This eliminates the need for separate insulating layers and fire extinguishing packs, thereby reducing structural complexity while maintaining heat resistance and fire protection capabilities.
Solution Approach 2:
The patent uses a coating composition containing specific flame retardant agents and resin components that change their physical and chemical properties under heat exposure. The coating transforms from a protective barrier to an active fire suppression system through parameter changes in its compositional state, providing both structural simplicity and functional effectiveness.
2Object-affected harmful factors
If traditional insulating layers or fire extinguishing packs are used, then some fire protection is provided, but sufficient heat resistance and weather resistance to delay flame propagation is not achieved
Solution Approach 1:
The patent employs a composite coating composition consisting of multiple resin components (polyester resin, acrylic resin), flame retardant agents (aluminum hydroxide, magnesium hydroxide, antimony trioxide), and other functional additives. This composite material provides synergistic effects that deliver superior heat resistance, weather resistance, and flame propagation delay compared to single-material solutions.
Solution Approach 2:
The coating composition contains flame retardant agents that undergo endothermic decomposition reactions when exposed to fire. These reactions absorb heat energy, convert harmful thermal energy into chemical reaction energy, and release flame-inhibiting gases, thereby transforming the harmful fire condition into a protective mechanism that delays flame propagation.
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 coating composition effectively delays fire propagation, ensuring time for evacuation and minimizing fire spread, while maintaining structural integrity and safety.
Implementation Method 1
An acrylic-silicone resin acts to provide heat resistance, weather resistance, and water resistance to a dry coating film
Implementation Method 2
a flame retardant comprising an inorganic flame retardant and a liquid flame retardant
Implementation Method 3
the coating film to undergo expansion and foaming in a case where gas is generated
Implementation Method 4
it acts as a skeleton of a foamed carbonized layer by changing a state of the coating film into a fluid state in a case of being exposed to a high temperature, and then causing the coating film to undergo expansion and foaming
Data Source
AI summary
The present invention relates to a coating composition having excellent heat resistance, weather resistance, and fire propagation delay performance.