Underride Protection Plate Venting for EV Battery Hot Gas Dissipation
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Solution Overview
Problem
In electrically driven motor vehicles, existing degassing devices for electrical energy reservoirs risk directing hot gases towards the vehicle interior, where they can ignite and cause fires, posing a safety hazard.
Innovation Solution
A motor vehicle design featuring an underride protection plate with configured flow channels between the battery housing and the protection plate, allowing for safe dissipation of hot gases through a meandering path that includes both a first flow channel between the battery housing and the protection plate and a second flow channel within the plate, ensuring effective cooling and safe gas dispersal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hot gases are dissipated through openings in the supporting structure near the vehicle interior, then the gases can be vented from the electrical energy reservoir, but the hot gases can ignite and cause fires, posing a safety hazard
Solution Approach 1:
The underride protection plate serves as an intermediary component between the battery housing and the vehicle underbody. It provides a dedicated pathway (flow channel) for hot gases to travel from the battery housing through the plate to the vehicle exterior, preventing direct contact with vehicle interior components while safely dissipating the gases away from the vehicle
Solution Approach 2:
The invention redirects the gas dissipation path from a vertical/short path near the vehicle interior to a horizontal/extended path through the underride protection plate. The meandering flow channel within the plate extends the gas travel path laterally, directing gases away from the vehicle interior and toward the vehicle exterior, effectively using spatial dimensionality to resolve the fire risk
2Reliability
If a meandering flow channel is configured between the battery housing and underride protection plate, then the hot gases can be effectively cooled and directed away from the vehicle interior, but the device complexity increases
Solution Approach 1:
The underride protection plate performs multiple functions: it provides mechanical protection for the battery housing from underbody impacts, serves as a structural support component, and acts as a gas dissipation device with integrated flow channels. By combining these functions into a single component, the invention avoids the need for separate gas routing structures, thereby reducing overall device complexity while achieving effective gas management
Solution Approach 2:
The invention merges the gas flow channel directly into the underride protection plate structure. Instead of having separate gas routing components, the flow channel is integrated as part of the plate itself, with the plate serving both as a protective barrier and as a guided pathway for hot gases to travel safely to the vehicle exterior
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 design provides a safe and inexpensive method for dissipating hot gases away from the vehicle interior, preventing potential fires by effectively cooling and directing gases away from the vehicle, thereby enhancing passenger and component safety.
Implementation Method 1
at least a first flow channel is configured between the battery housing and the underride protection plate and at least a second flow channel is configured within the underride protection plate
Data Source
AI summary
A motor vehicle having an electrical energy reservoir with a battery housing having at least one fluid outflow opening. An underride protection plate is arranged below the electrical energy reservoir. At least a first flow channel is configured between the battery housing and the underride protection plate. At least a second flow channel is configured within the underride protection plate. The underride protection plate includes at least one inflow opening to the at least one second flow channel and at least one outflow opening from the at least one second flow channel. The at least one fluid outflow opening of the battery housing communicates with the at least one inflow opening by way of the at least one first flow channel.