Battery Pack Venting Device With Flow Diverter Plates
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Solution Overview
Problem
Existing vehicle battery pack containers fail to effectively vent gases while preventing external fluids from entering, posing a risk of acid discharge and contamination.
Innovation Solution
A vehicle battery pack container with a venting device featuring a tubular portion and flow diverter plates that directs gases to ambient atmosphere while preventing fluid entry, utilizing a venting housing and flow diverter member to ensure safe gas venting and fluid exclusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a venting device is added to vent gases from the battery pack, then gas venting capability is improved, but the risk of external fluids entering the battery pack increases
Solution Approach 1:
The flow diverter member acts as an intermediary element between the venting apertures and the battery pack interior. It redirects fluid flow away from the aperture while allowing gas to pass through, mediating between the conflicting requirements of gas venting and fluid prevention
Solution Approach 2:
The venting housing and flow diverter member create different flow characteristics at different locations within the venting device. The first end portion allows gas passage while the flow diverter plates create a protective flow pattern that prevents fluid entry, applying different functional qualities to different spatial zones
2Reliability
If a complex venting device with flow diverters is used to prevent fluid entry, then fluid prevention capability is improved, but device complexity increases
Solution Approach 1:
The flow diverter member utilizes a flexible membrane structure that can deflect and redirect fluid flow. This thin-film approach achieves effective fluid prevention without requiring complex rigid mechanical components, maintaining simplicity while ensuring reliability
Solution Approach 2:
The flow diverter member automatically responds to fluid flow without requiring external control mechanisms. The flexible membrane self-adjusts to redirect incoming fluid away from the aperture, providing passive protection that reduces device complexity
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 vents gases from the battery pack to the ambient atmosphere while preventing external fluids from entering, enhancing safety and preventing acid discharge.
Implementation Method 1
The flow diverter member has a central shaft, a first flow diverter plate, and a second flow diverter plate. The first flow diverter plate is coupled to and extends substantially perpendicular to the central shaft and is disposed at a first longitudinal position on the central shaft. The first flow diverter plate covers a portion of a cross-sectional area of the interior region at a plane that is coplanar with a top surface of the first flow diverter plate. The second flow diverter plate is coupled to and extends substantially perpendicular to the central shaft and is disposed at a second longitudinal position on the central shaft. The second flow diverter plate covers a portion of a cross-sectional area of the interior region at a second plane that is coplanar with a top surface of the second flow diverter plate, such that a fluid entering the plurality of apertures in the first end portion cannot flow directly through the tubular portion without contacting at least one of the first flow diverter plate and the second flow diverter plate.
Data Source
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AI summary
A vehicle battery pack container is provided. The container includes a base member, a peripheral wall coupled to the base member, and a cover member coupled to the peripheral wall. The container further includes a venting device having a venting housing and a flow diverter member disposed within an interior region of the venting housing. The venting housing is coupled to the base member and is in fluid communication with an aperture in the base member. The venting housing has a tubular portion and a first end portion having a plurality of apertures extending therethrough. The flow diverter member has a central shaft, a first flow diverter plate, and a second flow diverter plate.