Spill-Resistant Battery Vent Cover With Labyrinth Seal
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Solution Overview
Problem
Lead acid and flooded batteries require venting of gases while preventing electrolyte leakage, necessitating a cover that allows gas escape while maintaining a seal and allowing for electrolyte replenishment, with cost-effective and roll-over compliant design.
Innovation Solution
A battery cover and vent cover system with snap features, fill tube holes, and a labyrinthine structure to manage gas venting and electrolyte flow, featuring removable and adjustable components for secure sealing and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a vent cover is designed to allow gas venting, then gas venting capability is improved, but electrolyte leakage risk increases
Solution Approach 1:
The vent cover is divided into multiple functional zones: a gas vent channel for gas escape, an electrolyte retention channel with baffles to prevent leakage, and a seal engagement portion. This segmentation allows simultaneous gas venting and electrolyte containment through spatial separation of functions.
Solution Approach 2:
A seal member (such as an O-ring or gasket) is introduced as an intermediary between the vent cover and battery cover to create a reliable seal. This mediator prevents electrolyte leakage while allowing gas to pass through designated vent channels, resolving the contradiction between venting and sealing.
2Reliability
If a battery cover design includes complex sealing and venting structures, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The vent cover integrates multiple functions into a single component: gas venting, electrolyte containment through baffles, sealing engagement, and even fill tube integration. This merging reduces the number of separate parts and assembly steps, lowering manufacturing cost while maintaining reliable spill-resistant performance.
Solution Approach 2:
The vent cover serves multiple purposes simultaneously: it vents gases, prevents electrolyte leakage, provides a seal interface, and incorporates fill tubes for electrolyte replenishment. This multi-functionality eliminates the need for separate components, reducing complexity and manufacturing cost while improving reliability.
3Reliability
If a vent cover is designed to prevent electrolyte leakage during rollover, then safety is improved, but device complexity increases
Solution Approach 1:
The vent cover incorporates three-dimensional baffles and channel structures that create a labyrinthine path for electrolyte flow. This dimensional complexity in the structure provides passive rollover protection through gravity-dependent flow control without requiring active mechanisms or complex control systems.
Solution Approach 2:
The baffles and channel geometry of the vent cover automatically respond to rollover conditions by using gravity to redirect electrolyte flow away from leakage paths. This self-service mechanism provides roll-over compliance without external control systems, actuators, or sensors, maintaining structural simplicity while improving safety.
Data Source
AI summary
A vented battery cover with a vent cover is disclosed. The vent cover may be capable of attachment to the battery at a first position and a second position using one or more first snap features and one or more second snap features. The vent cover may also provide a fluid path from a fill tube hole in the battery cover to a vent wherein the path is a labyrinth.