Battery Case Ventilation Lines to Prevent Local Pressure Peaks
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Solution Overview
Problem
Existing battery cases are prone to damage under extreme thermal stress due to local pressure maxima during gas discharge, which can lead to explosions and mechanical deformation.
Innovation Solution
A battery case with integrated ventilation lines within the base body material that fluidically connect to ventilation openings, allowing efficient gas discharge and preventing local pressure maxima.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If ventilation openings are introduced into the battery case to discharge gases, then gas discharge capability is improved, but local pressure maxima cause damage to the battery case
Solution Approach 1:
The ventilation system is segmented into multiple ventilation lines distributed throughout the base body, each connecting to ventilation openings. This segmentation allows gas to be discharged through multiple distributed paths rather than concentrated at single openings, preventing local pressure maxima from damaging the battery case while maintaining effective gas discharge capability
Solution Approach 2:
The base body is designed with locally differentiated properties: ventilation lines are embedded within the base body material at specific locations to create localized gas discharge pathways. This allows gas to be vented at multiple distributed points rather than concentrated at single openings, preventing local pressure maxima while maintaining effective gas discharge
2Strength
If ventilation lines are introduced into the base body material to distribute gas discharge, then mechanical stability is improved, but device complexity increases
Solution Approach 1:
The ventilation lines are merged with the base body material itself, forming an integrated structure where the ventilation pathways are embedded within the base body. This merging eliminates the need for separate ventilation components, reducing device complexity while maintaining mechanical stability through the distributed ventilation line network
Solution Approach 2:
The base body material serves multiple functions: it provides structural support for mechanical stability and simultaneously contains embedded ventilation lines for gas discharge. This multi-functionality reduces the need for separate ventilation components, simplifying the overall device while maintaining both structural integrity and ventilation capability
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 enhances mechanical stability and reduces the risk of explosions by ensuring uniform gas discharge, even under extreme thermal stress.
Implementation Method 1
a plurality of ventilation lines which extend on an inner side of the base body facing the chamber and which are fluidically coupled to at least a portion of the plurality of ventilation openings, wherein the plurality of ventilation lines extend in a material that forms the base body
Data Source
AI summary
A battery case for a battery cell. The battery case includes a base body that encloses, at least in areas. A chamber for accommodating galvanic components. A plurality of ventilation openings that connect the chamber to the surroundings of the base body. A plurality of ventilation lines that extend on an inner side of the base body facing the chamber and that are fluidically coupled to at least a portion of the plurality of ventilation openings. The plurality of ventilation lines extending in a material that forms the base body. A battery cell with such a battery case and a battery arrangement are also provided.