Electronics Housing Venting Unit With Adjustable Opening Pressure
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Solution Overview
Problem
Existing venting units for electronics housings, particularly battery housings, lack adjustable opening pressures, which can lead to inefficient pressure compensation and potential damage from improper venting.
Innovation Solution
A venting unit with a base body, a fluid-permeable cover, and a valve closure plate, where a spring member is interposed between the cover and the valve closure plate, allowing for adjustable opening pressures through varying mounting positions, ensuring customizable and secure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed spring compression is used in existing venting units, then the structure is simple, but the opening pressure cannot be adjusted leading to inefficient pressure compensation
Solution Approach 1:
The cover is designed to be movable relative to the base body, allowing dynamic adjustment of the spring compression load. The cover can be positioned at different locations along the central axis, each position corresponding to a different pre-compression of the spring member and thus a different opening pressure. This dynamic positioning capability enables the venting unit to adapt to different pressure compensation requirements without changing the basic structure.
Solution Approach 2:
The invention changes the physical parameter of spring pre-compression by varying the cover position. By moving the cover to different locations, the distance between the cover and valve closure plate changes, which directly alters the pre-compression of the spring member. This parameter change allows the opening pressure to be adjusted from a fixed value to a variable parameter that can be customized during manufacturing or post-manufacturing.
2Adaptability or versatility
If the cover is made movable to allow position adjustment, then opening pressure becomes adjustable, but the sealing reliability may be compromised
Solution Approach 1:
The sealing interface between the cover and base body is designed to establish reliable sealing at each possible mounting position before the venting unit is put into service. The sealing structure is pre-configured to ensure that when the cover is positioned at any location, it forms a tight seal with the base body, preventing gas leakage. This preliminary sealing arrangement ensures that the movability feature does not compromise sealing reliability.
3Adaptability or versatility
If multiple mounting positions are provided for the cover, then customization options increase, but the device complexity increases
Solution Approach 1:
The adjustment mechanism is segmented into discrete mounting positions rather than continuous adjustment. The base body includes multiple predetermined positions along the central axis where the cover can be securely mounted. Each position corresponds to a specific opening pressure value. This segmentation approach provides customization options while keeping the structure relatively simple, as it avoids the need for complex continuous adjustment mechanisms.
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 provides customizable opening pressures, ensuring reliable and secure venting while preventing damage from improper pressure compensation, allowing for adjustment during manufacturing or post-manufacturing.
Implementation Method 1
a spring member interposed between the valve closure plate and the cover and engaging the valve closure plate and the cover. The cover has at least two mounting positions providing different heights of the cover above the valve closure plate, and a pre-compression of the spring member corresponding to an opening pressure of the valve closure plate is controlled by the actual mounting position of the cover.
Data Source
AI summary
A venting unit for venting an electronics housing includes a base body configured to be connected to a pressure compensation opening of the electronics housing, the base body having an opening, a fluid-permeable cover disposed on the base body, a valve closure plate covering the opening of the base body and being covered by the cover, and a spring member interposed between the valve closure plate and the cover and engaging the valve closure plate and the cover. The cover is configured to be fixed in an actual mounting position among at least two mounting positions providing different heights of the cover above the valve closure plate, so that the actual mounting position of the cover sets a pre-compression of the spring member, the pre-compression corresponding to an opening pressure of the valve closure plate.