Fuel Cell Stack Support via Horizontal Casing Plate
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Solution Overview
Problem
Securing stable support for a fuel cell stack in electric vehicles to maintain driving performance is challenging, as existing technologies do not provide specific details on support mechanisms.
Innovation Solution
The fuel cell stack is supported by a flat, horizontal stack support surface on a common casing housing the electric motor and electrical adjuster, which is positioned at the bottom of the accommodation compartment, allowing for stable mounting and efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuel cell stack is arranged above the electric motor in the accommodation compartment, then the driving performance can be maintained, but the stability of fuel cell stack support becomes insufficient
Solution Approach 1:
The patent introduces a horizontal extension dimension by adding a support plate that extends in the vehicle width direction from the vertical support surface. This transforms the support structure from a simple vertical arrangement to a three-dimensional configuration that spans multiple spatial dimensions, thereby enhancing stability while maintaining the vertical arrangement for driving performance
Solution Approach 2:
The support structure is divided into multiple functional segments: a vertical support surface for primary load bearing, and a support plate extending in the vehicle width direction for additional stability. This segmentation allows each component to specialize in specific support functions, improving overall reliability without compromising driving performance
2Volume of moving object
If the accommodation compartment space is limited, then the vehicle structure is compact, but the fuel cell stack support becomes unstable
Solution Approach 1:
The support plate extends in the vehicle width direction, utilizing the horizontal dimension of the accommodation compartment. This allows the support structure to gain stability through spatial extension without increasing the vertical height or longitudinal length, effectively using available three-dimensional space efficiently
Solution Approach 2:
The support plate serves multiple functions: it provides additional support surface area for stability, acts as a mounting structure for the fuel cell stack, and optimizes space utilization in the accommodation compartment. This multi-functionality resolves the contradiction between compact space and stable support
3Device complexity
If the fuel cell stack is supported without a dedicated support structure, then the device complexity is reduced, but the mounting precision and stability deteriorate
Solution Approach 1:
The support structure is segmented into simple, discrete components (vertical support surface and horizontal support plate) that can be easily manufactured and assembled. This segmentation maintains low device complexity while providing precise mounting surfaces through the defined geometric relationship between components
Solution Approach 2:
The support structure provides localized precision mounting surfaces at critical contact points with the fuel cell stack, while maintaining overall structural simplicity. The vertical support surface and support plate create specific geometric features that ensure accurate positioning without requiring complex support mechanisms throughout the entire structure
Data Source
AI summary
In order to secure a driving performance of an electric vehicle while stably supporting a fuel cell stack, a fuel cell stack generating electric power, a motor generator, and an electrical adjuster are accommodated in an accommodation compartment formed at a front side of a passenger compartment in a vehicle length direction. The electric motor and the electrical adjuster are housed in a common, bottom casing and the bottom casing is arranged at a bottom of the accommodation compartment. A stack support surface which is flat and extends in substantially a horizontal direction is formed at a top of the casing. The fuel cell stack is arranged above the casing and is supported by the casing through mounts arranged on the stack support surface.