Battery Diffuser Element Gas Dispersion
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Solution Overview
Problem
The risk of undesirable ignitions due to gas leaks from vehicle batteries is not adequately addressed in existing technologies, as gases generated during operation can accumulate and lead to excessive pressure.
Innovation Solution
A battery design featuring a diffuser element with outlets on the side faces, redirecting gases away from the head face, and a valve element that releases excess pressure to prevent accumulation, ensuring gases are dispersed and pressure is managed safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas is discharged directly from a single housing outlet, then pressure relief is achieved, but gas concentration in one location increases creating ignition risk
Solution Approach 1:
The gas discharge structure is segmented into multiple diffuser outlets distributed across different side faces of the diffuser element, rather than using a single housing outlet. This segmentation disperses the gas discharge locations, reducing gas concentration at any single point and thereby lowering ignition risk while maintaining effective pressure relief
Solution Approach 2:
The diffuser outlets are arranged on multiple side faces (vertical and horizontal dimensions) of the diffuser element, transitioning from a single-point discharge to a multi-dimensional distribution pattern. This spatial distribution across different faces effectively disperses gas concentration in three-dimensional space, reducing ignition risk without significantly increasing structural complexity
2Object-affected harmful factors
If diffuser outlets are arranged on the head face, then gas discharge is simple, but gas concentration remains high near the battery housing
Solution Approach 1:
The diffuser element design creates asymmetry by placing all diffuser outlets on the side faces while leaving the head face free of outlets. This asymmetric arrangement ensures gas is discharged away from the battery housing area, reducing gas concentration near the battery, while the manufacturing complexity remains comparable to conventional diffuser designs
Solution Approach 2:
The diffuser element acts as an intermediary component between the housing outlet and the environment. It receives gas from the housing outlet and redistributes it through multiple side face outlets, mediating the gas flow to achieve better dispersion and lower local concentration without direct connection to the battery housing
3Object-affected harmful factors
If multiple diffuser outlets are distributed on side faces, then gas distribution in environment improves, but diffuser element complexity increases
Solution Approach 1:
The diffuser element is segmented with multiple outlets distributed across different side faces, creating multiple discharge points that improve gas distribution in the environment. The segmentation is achieved through a modular diffuser design where outlets are systematically arranged on vertical and horizontal faces, balancing dispersion effectiveness with manufacturing feasibility
Solution Approach 2:
The diffuser element performs multiple functions: it receives gas from the housing outlet, distributes gas through multiple side face outlets, and directs gas away from the battery housing. This multi-functionality is achieved through a single integrated component design that combines reception, distribution, and direction functions without requiring multiple separate parts
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 effectively reduces gas concentration near the battery, minimizing the risk of ignitions and ensuring safe pressure management, thereby enhancing safety and preventing potential damage or explosions.
Implementation Method 1
the diffuser outlets are arranged on the side faces. It is possible, in particular, that the diffuser outlets are arranged exclusively on the side faces... the gas flowing out of the interior is redirected in a plurality of directions before it reaches the environment
Data Source
AI summary
A battery for a drive of a motor vehicle includes at least one energy reservoir, a housing, an interior, and a diffuser element. The housing surrounds the interior and the energy reservoir is arranged in the interior. The diffuser element is attached to an exterior of the housing. The diffuser element includes a plurality of diffuser outlets, a plurality of side faces, and a head face. The side faces are arranged between the housing and the head face. A housing outlet is arranged in the housing, which outlet is configured so as to discharge gas out of the interior in an outgoing direction to the diffuser element. The outgoing direction is directed from the housing outlet towards the head face. The diffuser outlets are arranged on the side faces.