Capacitor Vent Recess Design for Clogging Prevention
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Solution Overview
Problem
Conventional capacitors with vents protruding into the receptacle are prone to clogging from precipitations and fluids, leading to premature malfunction and reduced energy density due to space occupancy by the vent.
Innovation Solution
A vent is arranged in a recess within the lid of the capacitor, protected from clogging and positioned to minimize space usage, allowing for enhanced pressure relief and increased energy density by embedding the vent within the lid's inner surface, which is designed with a recess that does not extend to the outer surface, thereby preventing clogging and optimizing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vent protrudes into the receptacle to enable pressure relief, then the vent can effectively release overpressure, but the vent is exposed to precipitations and fluids that can enter and block it, causing premature malfunction
Solution Approach 1:
The vent is nested within a recess in the lid, creating a protected cavity that shields the vent opening from direct exposure to precipitations and fluids in the receptacle. The recess acts as a protective enclosure while maintaining the vent's pressure relief function.
Solution Approach 2:
The recess serves as an intermediary structure between the vent and the hostile environment (precipitations and fluids). It provides a protective barrier that prevents direct contact between clogging agents and the vent opening.
2Reliability
If the vent protrudes into the receptacle to enable pressure relief, then the vent can effectively release overpressure, but the protruding vent consumes space in the receptacle, reducing the possible extent of the capacitor element
Solution Approach 1:
The vent is nested within a recess in the lid, allowing the vent structure to be contained within the lid's thickness rather than protruding into the receptacle volume. This enables the capacitor element to occupy the entire receptacle space.
Solution Approach 2:
The solution moves the vent from a protruding configuration (occupying receptacle volume) to an embedded configuration within the lid thickness dimension. This dimensional repositioning eliminates the trade-off between vent functionality and available space for capacitor elements.
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 vent clogging, reduces the risk of capacitor failure, and increases energy density by allowing the entire receptacle space to be used for the capacitor element, enhancing pressure relief and stability while maintaining electrical and mechanical connections.
Implementation Method 1
Via diffusion such a vent can release generated gases, such as hydrogen, and prevents capacitor failure due to accumulated internal pressure.
Implementation Method 2
Particularly capacitors comprising a fluid inside the receptacle can profit from a two-level recess, as a fluid may be retained to enter the recess by the surface tension at the lower level of the recess.
Data Source
AI summary
A capacitor is disclosed. In an embodiment a capacitor includes a receptacle with an opening, at least one capacitor element disposed inside of the receptacle and a lid sealing the receptacle, wherein a vent is arranged in a recess in an inner surface of the lid.