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Rubber Battery Flame Arrestor Wholesale

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Wholesale Battery Vent Plug Manufacturers

Zhejiang Hongda Special Rubber Products Co., Ltd.
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Company profile

Started in China, Marketing in the World
29 years of research spirit in the industry.

Established in 1993, Zhejiang Hongda Special Rubber Products Co., Ltd. is a professional China Battery Vent Plug Manufacturers and Wholesale Battery Flame Arrestor Factory. The company integrates scientific research, production and trade, pays attention to scientific and technological innovation, and strives to develop industrial battery safety valve products with high technology content and high quality performance. We has more than 50 industrial battery safety valves, safety caps, microporous materials, explosion-proof discs, etc. patented, among them, microporous materials were identified as national key new products. The company has drafted and formulated industry standards for lead-acid battery safety valves and national standards for rubber seals for power lithium batteries, and has passed a series of system certifications such as IS09001, IS014001, IS045001 and "Made in Zhejiang".

  • 29 +

    Established in 1993

  • 15 0,000+

    Average daily output

  • 200 +

    Employees

Honor

Welcome to visit Hongda

Our company has won the "Zhejiang High-tech Enterprise", "Excellent Demonstration Enterprise of Emphasizing Quality and Integrity", "Zhejiang Science and Technology Small and Medium-sized Enterprise" and many other honors..

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  • honor
    High-tech Enterprise
  • honor
    National Key New Product Certificate 2008
  • honor
    2008 The Most Growth Potential Small and Medium Enterprises In Zhejiang Province
  • honor
    2013 Innovative Demonstration Small and Medium Enterprises In Zhejiang Province
  • honor
    Advanced Enterprise for Innovation and Development of Small, Medium and Micro Enterprises in Zhejiang Province
  • honor
    Small and Medium-sized Enterprise with Specialization, Refinement, Characterization, Novelization In Zhoushan City
  • honor
    Provincial SME Technology Center
  • honor
    Top 10 Growing Small and Medium Enterprises
  • honor
    Provincial High-tech Enterprise Research and Development Center
  • honor
    Zhejiang Enterprise Standard "Leader" Certificate
News

What is new

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Industry Knowledge Expansion

How the battery vent plug works

The battery vent plug is an important component in the battery system. Its main job is to maintain the balance of gas pressure inside the battery to ensure that the gas generated by the battery during the charging and discharging process can be properly released or absorbed, thereby ensuring the safe operation of the battery.
Chemical reaction produces gas: During the charging and discharging process of the battery, a chemical reaction occurs that causes the production of gas, usually hydrogen, in the electrolyte. For example, in a lead-acid battery, a water electrolysis reaction occurs during charging, producing hydrogen and oxygen. If these gases accumulate too much in the battery, they may cause the gas pressure to increase, causing safety hazards such as battery explosion or leakage.
Automatically adjusts gas pressure: Battery vent plugs are designed to prevent excessive buildup by automatically adjusting gas pressure. The inside of the vent plug usually contains components such as springs, valves and seals. When the gas pressure inside the battery increases, the valve of the vent plug opens, allowing the gas to flow out. Conversely, when the gas pressure drops, the valve of the vent plug closes, preventing outside air from entering.
Prevent external substances from entering: The battery vent plug is also dustproof and waterproof. It prevents external dust, moisture or other contaminants from entering the inside of the battery through specially designed valves and filters. This helps keep the interior of the battery clean and protects the chemical reactions inside the battery from external interference.
Closable Design: Some battery vent plugs are designed to be closable, allowing manual control of the release and entry of gases when needed. This design allows operators to flexibly adjust the status of the vent plug to better meet the needs of specific applications.
High temperature protection and material selection: Since batteries may generate high temperatures during operation, battery vent plugs are usually made of high temperature resistant materials to ensure their reliability under harsh conditions. At the same time, some ventilation plugs also have over-temperature protection functions, which can be opened in time when the battery overheats to release internal gas, thereby reducing the temperature of the battery.

Types and applications of battery ventilation plugs

The types and applications of battery vent plugs vary depending on battery type, operating environment and requirements.
Pressure-Release Battery Vent Plug:
Working principle: This ventilation plug is mainly used to prevent the gas pressure inside the battery from being too high. When the gas pressure inside the battery rises to the set value, the ventilation plug will open to release excess gas, thereby maintaining a safe pressure range inside the battery.
Application fields: Commonly used in lead-acid batteries, nickel-cadmium batteries and other battery systems that need to release gas regularly, such as car starting batteries and emergency power systems.
Dustproof and waterproof battery vent plug:
Working principle: This type of ventilation plug is dustproof and waterproof. Through the filter and sealing design, it prevents external particles and moisture from entering the inside of the battery and keeps the inside of the battery clean.
Application fields: Widely used in outdoor equipment, military batteries and other battery systems in harsh environments to ensure long-term stable operation of the battery.
Closable battery vent plug:
How it works: This vent plug is designed to be manually closed or opened for control when needed. Users can manually adjust the status of the ventilation plug according to specific conditions.
Areas of application: In application scenarios that require manual intervention, such as laboratory battery systems or special battery applications, ventilation can be manually adjusted according to specific requirements.
Temperature controlled battery vent plug:
Working principle: This type of ventilation plug has a built-in temperature sensitive element. When the battery temperature rises to a certain level, the ventilation plug will activate and release the internal gas to help reduce the battery temperature.
Application fields: Mainly used in battery systems in high-temperature environments, such as electric vehicles and solar energy storage systems, to prevent battery overheating and safety issues.
Fire-retardant battery vent plug:
Working principle: This ventilation plug adopts a fire-retardant design, which can effectively prevent external fire sources from entering the battery and reduce the risk of fire in the battery system.
Application fields: Mainly used in battery systems that require high fire resistance, such as electric vehicles, power tools, etc.