Anti-Explosion Design For Battery Pack With Pressure-Release MICA VALVE

Anti-Explosion Design For Battery Pack With Pressure-Release MICA VALVE

Designing a battery pack with an anti-explosion feature, such as a pressure-release mica valve, involves careful consideration of materials and engineering principles. Here's an overview of how this can be effectively implemented:

Key Components

1. Mica Valve:

   • Material: Use phlogopite mica for its thermal stability and electrical insulation properties.
   • Function: The mica valve acts as a pressure release mechanism, allowing for the safe venting of gases or pressure build-up within the battery pack.

2. Pressure-Release Mechanism:

   • Design: The valve should be designed to open at specific pressure thresholds, releasing excess pressure safely.
   • Sealing: Ensure that the valve seals effectively under normal operating conditions to prevent leakage.

3. Battery Pack Structure:

   • Robust Housing: Use a sturdy outer casing to contain the battery cells and prevent damage from external impacts.
   • Thermal Management: Incorporate thermal management systems to dissipate heat and prevent overheating, which could lead to pressure build-up.

Anti-Explosion Features

• Controlled Venting: The mica valve allows for controlled venting of gases, reducing the risk of explosion due to rapid pressure increase.
• Temperature Resistance: Mica’s high thermal resistance protects against heat generated during battery operation.
• Electrical Insulation: The mica material prevents electrical shorts, enhancing safety.

Implementation Steps

1. Engineering Analysis: Perform simulations to determine the optimal pressure thresholds for the mica valve.
2. Material Testing: Test the mica valve under various conditions to ensure reliability and performance.
3. Prototyping: Build prototypes to evaluate the integration of the mica valve within the battery pack.
4. Safety Testing: Conduct safety tests to ensure the design meets regulatory standards and performs as intended under stress.

Benefits

• Enhanced Safety: Reduces the risk of catastrophic failures in battery packs.
• Reliability: The mica valve provides a reliable means of managing internal pressure.
• Long-Term Performance: Maintains the integrity and performance of the battery pack over its lifespan.

Conclusion

Incorporating a pressure-release mica valve into a battery pack design enhances safety and reliability, crucial for applications in electric vehicles and energy storage systems.

The energy density of new energy power batteries is getting higher and higher. When thermal runaway occurs, it will cause huge air pressure inside the battery pack. When it cannot be discharged, the battery pack will explode violently, accompanied by high-pressure and high-temperature flames.
YT Mica improves the design of mica materials according to the requirements of lightweight and explosion-proof of electric vehicles. The designed lightweight explosion-proof mica board has the characteristics of thin thickness, low-pressure fireproof and high-pressure explosion-proof.

1. When there is a flame in a low-pressure state, the mica board plays a role in fire prevention, preventing the flame from spreading and isolating heat.

2. When the air pressure in the battery pack is too high, the weak holes in the mica board are opened, which plays a role in pressure relief and balances the air pressure inside the battery pack.

YT MICA fully implement the ISO 9001-2015 quality system operation,as a stan- dardization of internal management,strengthen the system building an important measure.A strict quality control system has been established,from raw materials, processes, finished products inspection,to ensure that every link in the production process is strictly in accordance with the standards for testing.

YT Mica has equipped with various fire-resistant testing devices and can assist customers in developing fire-resistant cable products according to different standards of various countries, providing one-stop solution service.

1. According to different requirements, we have compiled a total of 64 testing items for mica products, including physical properties, electrical properties, thermal properties, aging properties, and flame retardant properties, which basically cover all the requirements for mica performance testing;

2. At present, YT MICA is capable to detect 50 items of the testings and provide theoretical support quickly for different application scenarios of mica products.

Yitian Mica has obtained 5 invention patents, 21 practical patents, 20 software registration rights, and 3 trademarks. More intellectual property rights has been applied for verification.

YTMICA 5 invention patents:
a mica insulation material for battery cells and its processing & application.
a squeeze-resistant fireproof mica tape for power batteries and its processing & application.

high-temperature resistant mica tape & mica thermal insulation parts and their production methods.
a processing method for fire-resistant mica tape.
a fire-resistant insulation tape for optical cables.

System certifications obtained:
ISO9001 Quality Management System Certificate
ISO14001 Environmental Management System Certificate
ISO45001 Certificate of Occupational Health&Safety Management
IATF 16949 Quality Management System certificate
SA8000 Social Responsibility Management System Certificate

YT Mica has a dedicated R&D department working on innovations and the development of your projects. It is our longstanding experience with processing natural mica that allows us to provide tailor-made solutions for our end customers. Our product development and application engineering specialists will be in close cooperation with our customers to identify their needs and meet their specific requirements. If we don't have an immediate solution for you, our R&D department will work with you to develop and deliver the best possible solution that will meet your needs.

We have invested and developed expertise in machining, drilling, cutting, sawing and punching, thermal pressing/stamping our products to provide the best solutions to our customers. From our home made mica sheets we can manufacture pieces according to your technical specifications.

Know more about YT Mica at www.ncnc.cn