EPS shell material – plastic material The housing material of...
afety valves and pressure relief devices made of materials: fluorine plastic
In the EPS (Encapsulated Power System) battery cell, safety valves and pressure relief devices are crucial safety components to effectively prevent accidents caused by excessive internal pressure. Fluoroplastics, especially polytetrafluoroethylene (PTFE), are gaining increasing attention in these applications due to their unique properties. The following will describe in detail the characteristics of polytetrafluoroethylene, the application of safety valves and pressure relief devices.
main content
Basic characteristic
Polytetrafluoroethylene is a high performance fluorine plastic, features include:
Excellent chemical stability: PTFE is very resistant to almost all chemicals, including acids, bases, solvents and battery electrolytes, and is suitable for the changeable chemical environment inside the battery.
High temperature resistance: PTFE's continuous temperature range is usually -200°C to +260°C, which is suitable for the high temperature environment generated during battery operation.
Low coefficient of friction: PTFE has a very low coefficient of friction, which reduces wear between moving parts and provides good sealing performance.
Insulation performance: PTFE is an excellent electrical insulator, which can effectively prevent short circuit and improve the safety of the battery.
Non-adhesive: PTFE surfaces are easy to clean and do not adhere to other substances, helping to open quickly when pressure is released.
Specific application in EPS battery
Safety valve structure and function: The safety valve is a key component of the battery, responsible for the rapid release of gas when the internal pressure is too high. PTFE material because of its good chemical and thermal stability, suitable for the manufacture of safety valve seals, to ensure tightness and safety.
Pressure relief device: PTFE can effectively withstand high pressure when designing pressure relief devices, while quickly opening and returning to a sealed state when the set pressure is exceeded, reducing the risk of leakage.
Seals and gaskets: The excellent physical and chemical properties of PTFE make it an ideal material for seals and gaskets, ensuring effective sealing of safety valves during operation.
Strengths
Chemical resistance: PTFE can withstand a variety of harsh chemical environments, so it is stable in a variety of battery electrolytes and chemical materials.
High temperature performance: Its high temperature stability allows PTFE to run for a long time in high-energy batteries without performance degradation.
Pressure tolerance: PTFE can be designed to withstand high pressure safety valves, ensuring reliable operation under extreme conditions.
Low adhesion: The non-adhesion characteristics of PTFE make it easy to open the safety valve when in use, ensuring timely release of pressure.
Low adhesion: The non-adhesion characteristics of PTFE make it easy to open the safety valve when in use, ensuring timely release of pressure.
CONCLUSION
Polytetrafluoroethylene (PTFE) has become an important material choice for EPS cell safety valves and pressure relief devices because of its excellent chemical stability, high temperature resistance, good mechanical properties and electrical insulation.
EPS BATTERY SERIES
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