Membrane Vent Assembly With Relief Valve for Pressure Spikes
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Solution Overview
Problem
Conventional vents with protective membranes are insufficient to quickly equalize pressure spikes within enclosures, such as battery casings, which can lead to damage or bursting, as they fail to allow rapid gas release during high-pressure events.
Innovation Solution
Integration of a relief valve mechanism within the vent that allows for passive gas exchange under normal conditions but bypasses the vent to enable unrestricted airflow during pressure spikes, using materials like breathable membranes and spring-loaded or adhesive coupling structures to facilitate rapid pressure relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective vent with membrane is used to allow gas pressure equalization while preventing liquid and solid contaminants, then protection against contaminants is improved, but the speed of pressure equalization during pressure spikes deteriorates
Solution Approach 1:
The vent assembly is segmented into two functional paths: a membrane-filtered path for normal operation and a bypass path for emergency pressure relief. The relief valve creates a separate flow path that bypasses the membrane, allowing rapid pressure equalization without compromising contaminant protection during normal conditions.
Solution Approach 2:
The system dynamically switches between two operational modes based on pressure conditions. During normal operation, gas flows through the membrane at a controlled rate. During pressure spikes, the relief valve opens to create an unrestricted bypass path, enabling the system to adapt its pressure equalization speed to the operational conditions.
2Reliability
If a membrane vent is used to prevent liquid and solid contaminants from passing through, then contamination protection is improved, but the ability to quickly release gas during high-pressure events deteriorates
Solution Approach 1:
The vent assembly divides gas flow into two segments: normal flow through the membrane and emergency flow through the bypass. This segmentation allows the membrane to maintain contamination protection while the bypass provides high-speed gas release capability when needed.
Solution Approach 2:
The relief valve acts as an intermediary mechanism that activates during high-pressure events to create a temporary bypass path. This intermediary structure allows the system to overcome the membrane's flow restriction without compromising the membrane's contaminant blocking function.
3Device complexity
If a protective vent with membrane is used to allow passive gas venting, then simplicity of structure is improved, but the capability to handle pressure spikes deteriorates
Solution Approach 1:
The invention merges a protective vent and a relief valve into a single integrated assembly. The vent housing combines both the membrane-filtered path and the bypass path with relief valve, creating a unified structure that provides both normal venting and pressure spike protection without requiring separate components.
Solution Approach 2:
The vent assembly performs multiple functions: it protects against contaminants during normal operation, handles pressure equalization, and provides emergency pressure relief. This multi-functionality is achieved within a single integrated structure, maintaining simplicity while enhancing capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents damage from pressure spikes by allowing quick gas release during high-pressure events, maintaining enclosure integrity and preventing damage to internal components.
Implementation Method 1
Vents can use a water, dust, and oil resistant membrane to allow gas pressures to equalize while preventing liquid and solid contaminants to pass through
Implementation Method 2
spring-loaded or adhesive coupling structures to facilitate rapid pressure relief
Implementation Method 3
spring-loaded or adhesive coupling structures to facilitate rapid pressure relief
Data Source
AI summary
A vent assembly has a housing defining a cavity, a first end, a second end, and a coupling structure towards the second end. A mounting surface is positioned between the first end and the second end within the cavity and defines a valve opening and a vent opening. A vent is coupled to the mounting surface across the vent opening, and an umbrella valve is sealably disposed on the mounting surface across a valve opening.