Modular Venting Unit Assembly for Pressure Peaks in Electronics Housings
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Solution Overview
Problem
Existing venting systems for electronic components, such as battery housings, face challenges in balancing gas exchange for pressure equalization while preventing the ingress of foreign particles and moisture, especially under conditions of temperature fluctuations and potential pressure peaks.
Innovation Solution
A modular assembly set for a venting unit that includes a housing with fixation means and an inlet body with a semipermeable membrane for pressure compensation and degassing, allowing for interchangeable modular functional units that can be pre-tested and pre-manufactured, separating the functions of pressure compensation and emergency venting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure equalization device with a semipermeable membrane is used, then gas exchange for pressure balancing is enabled, but the device complexity increases due to the need for separate membrane support and fastening mechanisms
Solution Approach 1:
The patent combines the membrane support function and the fastening mechanism into a single integrated component. The support element has a support surface for the membrane and a fastening surface for attachment to the housing, merging two separate functions into one element, thereby reducing device complexity while maintaining pressure balancing reliability
Solution Approach 2:
The support element serves multiple functions simultaneously: it provides mechanical support for the semipermeable membrane, enables fastening to the housing through its fastening surface, and contributes to the overall structural integrity. This multi-functionality reduces the number of separate components needed
2Manufacturing precision
If complex welding and assembly operations are performed inside the housing, then the venting unit achieves high sealing quality, but the manufacturing precision and production time are reduced
Solution Approach 1:
The support element is pre-assembled with the membrane and fastening mechanisms outside the housing. This preliminary assembly allows for precise sealing operations to be performed in a controlled environment before the component is installed in the housing, thereby maintaining high sealing quality while reducing the time required for final assembly
Solution Approach 2:
The venting unit is divided into separate modular components: the support element with integrated fastening, the membrane, and the housing. This segmentation allows each component to be manufactured and pre-tested independently, improving overall production efficiency while maintaining high sealing quality through specialized manufacturing processes for each module
3Ease of manufacture
If modular interchangeable functional units are used, then adaptability and ease of manufacture are improved, but the device complexity increases due to the need for interface receptacles and counter-receptacles
Solution Approach 1:
The support element is designed as a universal module that can be attached to different housing types through standardized receptacles and counter-receptacles. This universal design simplifies manufacturing by allowing the same support element to be used across multiple product variants, while the interface complexity is minimized through standardized connection geometries
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
This solution enables flexible and cost-effective production of venting units with smaller installation spaces, facilitating the use of different semipermeable membranes and venting concepts within the same housing, ensuring effective pressure balancing and preventing moisture and particle ingress without complex welding inside the housing.
Implementation Method 1
Pressure equalization devices are therefore known which have membranes that are permeable to gas but impermeable to liquid
Implementation Method 2
The support element has a support surface for the semipermeable membrane and a fastening surface for attachment to the housing
Data Source
AI summary
An assembly set for a venting unit for venting an electronics housing includes a housing including a base body with an inner opening, the base body configured to connect to a pressure compensation and/or degassing opening of the electronics housing, and an inlet configured to be inserted in the inner opening and to cover the inner opening in a water-tight manner. The inlet includes an inlet body with an inlet opening, a semipermeable membrane covering the inlet opening and enabling passage of gaseous media from an environment into the electronics housing and from the electronics housing to the environment, but preventing passage of liquid media and solids, and a spike element arranged at the inlet body on an outer side of the semipermeable membrane, the spike element being configured to rupture the semipermeable membrane in case of an excessive overpressure inside the electronics housing.