Introduction:
As the demand for new energy vehicles continues to rise, ensuring the safety and performance of power batteries becomes increasingly crucial. In this regard, ceramic fiber aerogel felt has emerged as a cutting-edge solution for thermal insulation and protection. With exceptional properties and performance, aerogel insulation materials offer superior heat resistance, flame retardancy, and thermal runaway protection for batteries in new energy vehicles. This article highlights the remarkable features of ceramic fiber aerogel felt and its application in enhancing the safety and efficiency of power batteries.
Ceramic Fiber Aerogel Felt Performance:
1. Maximum Operating Temperature: With a maximum operating temperature of 650℃, ceramic fiber aerogel felt can withstand high thermal loads, ensuring stability and performance even under extreme conditions.
2. Density: The density of ceramic fiber aerogel felt is 280±30kg/m3, providing lightweight insulation without compromising on thermal protection.
3. Thermal Conductivity: The low thermal conductivity of ceramic fiber aerogel felt ensures excellent insulation performance across different temperatures. It meets the following standards:
- ≤0.023W/m*K@25℃ (GB/T 10295-2008)
- ≤0.030W/m*K@100℃ (GB/T 10294-2008)
- ≤0.036W/m*K@300℃
- ≤0.072W/m*K@500℃
4. Combustion Level: Ceramic fiber aerogel felt achieves A Level combustion performance according to GB/T 8624-2012 and V0 requirements as per UL94-2013 standards, ensuring enhanced flame retardancy.
5. Hydrophobicity: With a hydrophobicity rating of over 98% (GB/T10299-2011), ceramic fiber aerogel felt exhibits excellent water repellency, maintaining its insulation properties even in wet environments.
6. Biosecurity: It complies with biosafety requirements, such as RoHS/REACH/ELV, ensuring environmental and health safety standards are met.
7. Burn-through Resistance: Ceramic fiber aerogel felt demonstrates exceptional burn-through resistance. It can withstand outer flame burning from a butane spray gun for over 120 minutes at a thickness of 3mm.
8. Insulation Effect: The insulation effect of ceramic fiber aerogel felt is remarkable. It can achieve minimum temperatures of:
- 1mm: Min≥385℃
- 2mm: Min≥440℃
- 3mm: Min≥495℃
- 4mm: Min≥520℃
Application in New Energy Vehicle Batteries:
Ceramic fiber aerogel insulation sheets find extensive application in new energy vehicle batteries and modules, offering the following benefits:
1. Heat Insulation: By effectively minimizing heat transfer, ceramic fiber aerogel felt ensures optimal temperature control within power batteries, enhancing their performance and lifespan.
2. Buffering: The insulation sheets provide cushioning and shock absorption, protecting batteries from mechanical stress and vibration during vehicle operation.
3. Flame Retardant: With excellent flame retardancy, ceramic fiber aerogel insulation prevents the spread of fire, safeguarding the battery and surrounding components.
4. Thermal Runaway Protection: The superior thermal insulation properties of ceramic fiber aerogel felt act as a barrier between battery cells, preventing thermal runaway from spreading and minimizing the risk of catastrophic failures.
Meeting Performance Requirements:
Ceramic fiber aerogel insulation sheets for power batteries must fulfill specific performance requirements, including:
1. Temperature Control: The cold side of the sample should not exceed 180°C, maintaining safe operating temperatures.
2. Vertical Burn: The insulation sheets should meet the V0 requirements specified in GB/T 2408, ensuring high flame retardancy.
3. Compression Ratio: The sheets should withstand a compression ratio not less than 35% under 2Mpa pressure, maintaining their insulation performance under mechanical stress.
4. Tensile Strength: The length and width direction of the insulation sheets should have a tensile strength of not less than 500Kpa, ensuring durability and longevity.
5. Insulation Properties: The surface thermal resistivity should be greater than 500MΩ, and the leakage rate should be less than 1mA, ensuring reliable insulation performance.
6. Prohibited and Restricted Substances: The insulation sheets should comply with Directive 2011/65/EU, ensuring the absence of prohibited or restricted substances.
7. Aging Resistance: After aging, the insulation sheets should exhibit a tensile strength attenuation rate of not exceeding 30% and a dimensional change rate less than 1%. The heat insulation performance should also meet the specified requirements.
Conclusion:
Ceramic fiber aerogel insulation materials offer exceptional thermal insulation, flame retardancy, and thermal runaway protection for power batteries in new energy vehicles. With their impressive performance characteristics and compliance with stringentsafety standards, these aerogel insulation sheets provide an effective solution to enhance the safety, efficiency, and longevity of power batteries. By incorporating ceramic fiber aerogel felt into the design of new energy vehicles, manufacturers can ensure optimal thermal management, protect against potential hazards, and contribute to the advancement of the electric vehicle industry.
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