Publish Time: 2023-11-15 Origin: Site
In the rapidly evolving world of electric vehicles (EVs), ensuring battery safety is paramount. Advanced thermal insulation solutions and sealing technologies play a crucial role in preventing thermal runaway and enhancing overall battery performance. This guide explores cutting-edge materials and technologies designed to protect electric vehicle batteries from heat-related hazards.
Understanding Thermal Runaway and Its Risks
Thermal runaway is a serious issue in EV battery packs that can lead to catastrophic failures. It occurs when a battery cell undergoes a short circuit, resulting in a violent chemical reaction between the positive and negative electrode materials. This reaction causes a dramatic increase in temperature, excessive pressure, and can ultimately lead to shell rupture, spontaneous combustion, or even explosion.
The characteristics of spontaneous combustion in power batteries include rapid burning speed, high calorific value, and significant challenges in firefighting. To mitigate these risks, various safety measures have been adopted, including improvements in battery structure design, heat dissipation systems, and fire resistance of core materials.
Cutting-Edge Thermal Insulation Technologies
Die-Cut Solutions for Electric Vehicle Batteries
Advanced die-cut solutions offer precise and effective thermal insulation for EV batteries. These solutions use high-performance materials that are tailored to fit the unique dimensions and requirements of battery packs, ensuring optimal protection against thermal runaway.
Fireproof Felt Materials
Fireproof felt materials such as mica boards, ultra-fine glass wool, and high silica wool felt are commonly used in battery packs of new energy vehicles. These materials effectively isolate heat diffusion and control fire direction, thereby improving fire safety. The incorporation of these fireproof felt materials delays the heat diffusion time, enhancing the safety of the battery pack.
Fireproof Coatings
To further enhance battery safety, fireproof coatings are applied to the outer surface of the battery box. These coatings help slow down heat transfer to the passenger compartment, reducing the risk of heat-related damage in case of a battery fire.
Product Overview
Our advanced thermal insulation solutions for electric vehicle batteries incorporate the latest materials and technologies to offer superior protection. By combining die-cut solutions, fireproof felt materials, and fireproof coatings, we provide a comprehensive approach to battery safety. Our solutions not only enhance fire resistance but also contribute to better overall performance and longevity of the battery packs.
Key Features
Die-Cut Solutions: Custom-fit thermal insulation for precise battery pack protection.
Fireproof Felt Materials: Effective isolation and control of heat diffusion.
Fireproof Coatings: Reduced heat transfer to passenger compartments.
Ensuring the safety of electric vehicle batteries is crucial for preventing potential hazards and ensuring reliable vehicle performance. Our advanced thermal insulation and sealing solutions offer state-of-the-art protection against thermal runaway, combining innovative materials and technologies to enhance battery safety. Embrace the future of EV battery safety with our cutting-edge solutions.
Regarding the sealing of the battery module and cooling solutions for electric vehicle batteries, here are some key differences and advantages of the materials mentioned:
1. Silicon foam for battery casing sealing:
- Low density
- Sound insulation
- Vibration damping
- Thermal insulation
- High flame retardancy
- Aging resistance
- Super waterproof
- Super dustproof
- Lightweight
- Insulation
- High and low-temperature resistance
- Longer service life compared to traditional foam materials
- Better comfort, foam density, and environmental protection than traditional foam materials
2. Mica sheet for cooling pads in pouch cell battery packs:
- Excellent anti-high-pressure and high-temperature resistance
- Can endure temperatures up to 1300°C for a certain period without burning through
- Provides crucial time for passengers to evacuate during fire incidents or accidents, ensuring safety
3. Silicone foam gasket for cooling pads in pouch cell battery packs:
- Comparable flame retardancy and insulation to mica sheets
- Additional advantages include vibration damping, anti-high voltage, and maximum protection for each battery's independent space
4. PU+PET for cooling pads in pouch cell battery packs (less recommended):
- Inferior fire insulation compared to the previous options
- Fading out as a popular choice
- Cost-effective but may compromise safety and battery life
5. Different solutions for prismatic cell battery packs:
- MPP (Microcellular Polypropylene foam):
- High-temperature resistance
- Excellent insulation properties
- Reduces heat transfer and improves battery performance
- Provides pressure resistance and shock absorption for battery protection
- Silicone rubber:
- Low thermal conductivity
- High ignition temperature and low flammability
- Resistance to various chemicals
- High tensile strength and durability
- Recyclable and biodegradable, reducing environmental impact
- Ceramic Silicone Rubber:
- Contains all the advantages of silicone rubber
- Forms a ceramic layer under flame burning, maximizing escape time for passengers
- Aerogel pad:
- Low thermal conductivity, effectively blocking heat transfer
- Withstands high temperatures without losing insulation performance
- Thin and lightweight, adaptable to different cell shapes and sizes
- Provides thermal protection and mechanical support to cells
6. Silicone rubber prismatic cell venting seal:
- Stable and heat-resistant
- Provides support and protection for thermal management
7. Composite materials (PU, RPU, FPU) for battery base cooling plate:
- High strength and corrosion resistance
- Suitable for load-bearing and corrosion-resistant environments in water-cooled plates
These differences highlight the unique properties and advantages of each material in terms of insulation, protection, heat resistance, flame retardancy, durability, and safety for electric vehicle batteries.