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Why New Energy Vehicle Battery Packs and Outdoor Sensors Must Install Vent Plugs?
The Critical Role of Waterproof and Breathable Solutions
In the field of new energy vehicles and precision outdoor sensors, the interior of the housing is not in a "static" state. Due to ambient temperature fluctuations, heat generation from electronic components, and changes in altitude, significant pressure fluctuations occur within the enclosure.
- Eliminating Pressure Imbalance: When battery packs heat up during high-current charging/discharging or when sensors are in environments with large day-night temperature differences, the internal air expands and contracts. Without a Vent Plug, the massive pressure differential can directly impact seals, interfaces, or the housing, leading to structural deformation or seal failure.
- Preventing Internal Condensation: When warm, humid air enters a closed housing and reaches the dew point during cooling, water vapor condenses into liquid water, causing short circuits or corrosion. Vent plugs allow water vapor molecules to pass through freely, keeping the interior dry and fundamentally solving the condensation problem.
Changzhou Baonong New Material Technology Co., Ltd. has been deeply rooted in this field for eight years. Located in Changzhou (known as "Dragon City"), the company boasts a modern industrial workshop of over 6,000 square meters. With its self-developed waterproof and breathable product series, the company provides reliable "breathing" protection for battery packs and sensors through standardized integrated manufacturing processes, ensuring safe operation in extreme environments and gaining long-term consumer trust.
Performance Parameter Comparison: Standard Seals vs. Vented Components
The following comparison highlights the safety improvements provided by integrating vent plugs:
| Performance Metrics | Standard Seal (Non-Vented) | Vented Assembly (Baonong Solution) | Industry Value |
| Pressure Balance | Unable to balance; prone to damaging seals | Real-time balance (Flow rate up to liters/min) | Extends housing and seal lifespan |
| Waterproof Rating | IP67/IP68 (Initial state) | IP67/IP68 / IP69K | Resists high-pressure washing and immersion |
| Condensation Risk | High (Moisture trapped inside) | Extremely Low (Continuous vapor release) | Protects precision components from corrosion |
| Pressure Relief | None (Pressure buildup may cause failure) | Features explosion-proof relief (Optional) | Enhances NEV battery safety |
| Chemical Resistance | Material dependent | Strong (Oleophobic, UV/Acid/Alkali resistant) | Suitable for harsh industrial/outdoor environments |
Frequently Asked Questions (FAQ)
Q1: How is product quality stability guaranteed in extreme environments?
Changzhou Baonong New Material Technology Co., Ltd. owns more than 90 sets of independent intellectual property-owned automated equipment, which are high-speed, precise, and stable. Each product undergoes a dual inspection mechanism of "automatic equipment testing + manual inspection." This strict quality control ensures that every vent maintains stable performance in demanding scenarios like automotive headlamps and pesticide packaging, helping customers build a reliable brand reputation.
Q2: Why choose the integrated manufacturing services of Changzhou Baonong New Material Technology Co., Ltd.?
As one of the few standardized, modern, and high-quality integrated manufacturers in the industry, we are committed to an "integrated process of design, R&D, production, and sales." This means we can provide customized waterproof and breathable gaskets, plugs, or covers for specific customer applications (such as NEV battery packs or special liquid packaging). Our eight years of technical expertise and 6,000sqm factory capacity ensure fast, efficient, and high-quality delivery of large-scale orders.
Q3: Will the breathable performance fail if the product encounters oil or chemical splashes?
For specialized scenarios like chemical packaging and automotive components, the Oleophobic membranes developed by Changzhou Baonong New Material Technology Co., Ltd. offer excellent resistance. Our products are not only "breathable yet waterproof" but also effectively resist the penetration of low surface tension liquids such as alcohol, engine oil, and detergents, preventing pore clogging and ensuring superior safety under complex transportation and usage conditions.
Would you like me to provide a detailed technical specification sheet for a specific product model, such as an M12 metal vent plug or an adhesive-backed membrane?
