Battery Housing Gas Guide Element for Diffuse Vent Redirection
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Solution Overview
Problem
Existing vehicle battery systems face issues with gas discharge leading to potential ignition and damage due to high thermal loads and uncontrolled gas flow, which poses risks to passenger safety and increases costs and weight with localized protection measures.
Innovation Solution
A body arrangement featuring a guide element, such as a gas guiding metal sheet, is used to redirect gas flows from battery housing outlets, distributing them in a diffuse manner away from critical areas, utilizing temperature-resistant materials and secure connections to the vehicle structural element for enhanced thermal and flame protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If gas outlet openings and outlet nozzles are provided on the battery pack housing to discharge hot gas, then gas flow can be directed outward from the battery housing, but the outlet openings and nozzles are exposed to high thermal loads causing them to become disengaged and potentially ignite
Solution Approach 1:
A guide element is introduced as an intermediary component between the outlet opening and the vehicle structural element. This guide element redirects the gas flow in a predetermined direction away from critical areas, serving as a mediator that protects the outlet components from direct thermal exposure while maintaining the gas discharge function
Solution Approach 2:
The protection system is segmented into distinct functional components: the outlet opening for gas discharge, the guide element for flow redirection, and the vehicle structural element for mechanical support. This segmentation allows each component to be optimized for its specific function and facilitates targeted protection strategies
2Object-generated harmful factors
If the gas flow is directed through outlet openings on the battery housing, then hot gas can be discharged from the battery housing, but the gas flow may strike vehicle components causing damage or ignition
Solution Approach 1:
The guide element acts as an intermediary that intercepts and redirects the gas flow before it can contact vulnerable vehicle components. By positioning the guide element in the gas flow path, it serves as a protective mediator that directs the hot gas away from critical areas toward safe discharge zones
Solution Approach 2:
The guide element is positioned in advance to preemptively redirect the gas flow before it can cause harm to vehicle components. This preliminary action of flow redirection prevents the potential ignition or damage of surrounding components by altering the gas flow trajectory upstream
3Reliability
If additional components are added to thicken the region subjected to gas or flames for passive protection, then resistance to thermal and flame action is increased, but costs and weight increase
Solution Approach 1:
A relatively lightweight guide element serves as an effective intermediary protection component, redirecting gas flow away from critical areas without requiring substantial thickening of structural components. This approach achieves protection through flow management rather than mass accumulation
Solution Approach 2:
The guide element changes the directional parameters of the gas flow rather than resisting the flow through mass. By altering the flow trajectory through geometric design, protection is achieved without increasing component weight or thickness
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
This solution effectively redirects gas flows to non-critical regions, preventing localized thermal loading and ignition, enhancing passenger safety while reducing costs and weight by providing comprehensive protection against thermal and flame impacts.
Implementation Method 1
at least one guide element (114) for redirecting a gas flow being discharged from at least one outlet opening (110) of the energy storage housing (108) in a predetermined direction
Implementation Method 2
The at least one guide element may be constructed and/or arranged to redirect at least one gas flow in a predetermined or defined direction
Data Source
AI summary
A body assembly has a vehicle structural element configured to mechanically couple to an energy storage housing. At least one guide element redirects a gas flow emerging from at least one exit port of the energy storage housing. The at least one exit port is configured to pass gas from within the energy storage housing to an external environment external to the energy storage housing.