Aerogel Battery Thermal Insulation: Key Material for EV Safety

Why Aerogel Becomes the Core Material for Battery Safety Protection

With the rapid development of the new energy vehicle market, battery thermal management has become a critical technology affecting vehicle safety and performance. Aerogel, as a revolutionary nanoporous insulating material with extremely low thermal conductivity and excellent high-temperature resistance, is becoming the preferred solution for EV battery pack thermal runaway protection.

Core Advantages of Aerogel

• Extremely Low Thermal Conductivity: Thermal conductivity of only 0.015-0.02 W/(m·K) at room temperature, 3-5 times better than traditional materials
• High-Temperature Resistance: Can withstand temperatures above 650°C, effectively blocking flame spread during thermal runaway
• Lightweight and High-Strength: Density of only 200-300 kg/m³, adding minimal weight to battery packs
• Fire Retardant and Explosion Proof: Aerogel structure is non-combustible and produces no toxic gases when exposed to fire

Application Scenarios in Battery Packs

Aerogel battery thermal insulation pads are mainly used in the following critical positions:

1. Inter-cell Isolation: Placed between adjacent cells to prevent thermal runaway propagation
2. Battery Module Top Layer: Acts as an insulating layer between the top cover and cells, blocking heat transfer downward
3. Liquid Cooling Plate Insulation: Creates a thermal barrier between the liquid cooling system and cells

Selection Suggestions and Procurement Key Points

When selecting aerogel suppliers, it is recommended to focus on the following indicators:

• Thermal conductivity test reports (actual testing verification advised)
• High-temperature performance curves (是否符合UL94 V-0标准)
• Thickness tolerance control (affects cell gap consistency)
• Mass production capacity (scalability capability)

Market Trends and Price Outlook

According to industry research, the aerogel battery thermal insulation market will maintain over 40% annual growth from 2024-2028. As new energy vehicle safety standards tighten (such as the upgrade of national standard GB 38031-2020), aerogel as a rigid demand for battery thermal runaway protection will further release. Domestic aerogel suppliers have achieved technological breakthroughs, with costs 30-50% lower than imported products, making it the best window for market entry.

For battery manufacturers, now is the strategic opportunity period to lock in quality aerogel suppliers. It is recommended to lock prices through annual framework agreements to ensure supply chain stability and cost control.

Keywords: aerogel, new energy battery, battery thermal insulation, EV, thermal management