Porous Cell Stack Support for Battery Ventilation
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Solution Overview
Problem
Current battery spacers in rechargeable energy storage systems restrict gas flow, limiting ventilation efficiency in vehicle battery cells.
Innovation Solution
A cell stack support with a porous material body and angled support members that create tapered passages to enhance gas flow from the electrode stack to the vent, improving ventilation and reducing gas flow restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional spacer is used between the cell can and electrode stack, then structural support is provided, but gas flow is restricted and ventilation is constricted
Solution Approach 1:
The cell stack support is formed from a porous material with interconnected voids that allow gas to flow through the support structure. This porous construction provides mechanical support while simultaneously enabling ventilation, eliminating the gas flow restriction problem of traditional solid spacers.
Solution Approach 2:
The cell stack support combines structural integrity with gas permeability through composite construction, integrating both support and ventilation functions into a single component that addresses the contradictory requirements.
2Stability of the object's composition
If a solid spacer is used to support the electrode stack, then structural stability is maintained, but ventilation efficiency is reduced
Solution Approach 1:
The porous structure of the cell stack support maintains structural stability while allowing gas to pass through the interconnected voids, thereby improving ventilation efficiency without compromising electrode stack stability.
3Ease of manufacture
If gas flow channels are minimized to reduce complexity, then manufacturing is simplified, but gas transport capability is reduced
Solution Approach 1:
The porous material approach creates numerous interconnected flow channels throughout the support structure, providing excellent gas transport capability while maintaining a relatively simple monolithic structure that is easy to manufacture.
Solution Approach 2:
The porous structure effectively segments the support into numerous small voids and channels, creating multiple gas flow pathways that enhance ventilation while the overall monolithic structure remains simple to manufacture.
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 gas flow and ventilation efficiency, reducing the risk of overheating and thermal overload by allowing faster escape of gases during charging and discharging cycles.
Implementation Method 1
the body is formed from a porous material, the at least one passage comprising a plurality of passages defined between interstitial spaces in the porous material
Data Source
AI summary
A battery cell for a vehicle includes a cell can having a first wall, a second wall, a first side wall and a second side wall. The first wall, the second wall, the first side wall, and the second side wall defining an electrode stack receiving zone. A vent is formed in the second wall. The vent is spaced from the first side wall and the second side wall. The vent fluidically connects the electrode stack receiving zone with an exterior of the cell can. An electrode stack is positioned in the electrode stack receiving zone. The electrode stack is spaced from of the first side wall by a channel. A cell stack support is arranged in the electrode stack receiving zone and supporting the electrode stack above the second wall. The cell stack support includes at least one passage that transports gases from the channel to the vent.