Expanded Plastic Carrying Container for Fuel Cell Safety
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Solution Overview
Problem
Existing power supply units with fuel cell stacks face challenges in simplifying assembly and ensuring safety, particularly in preventing hazardous hydrogen mixtures and requiring extensive proof of reliability.
Innovation Solution
A carrying container made of expanded plastic with cut-outs and a reactant-guiding channel, which serves as a shell, fixing means, and insulator, reducing dead spaces where hydrogen can accumulate and guiding reactants to fuel cells to minimize hydrogen concentration and prevent misdirected air flows, while maintaining uniform air distribution and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If expanded plastic is used as a carrying container, then thermal insulation and safety are improved, but the material selection and manufacturing precision requirements increase
Solution Approach 1:
The patent specifies expanded plastic with controlled density and thermal conductivity parameters to optimize both safety and manufacturability. By defining specific material parameters, the invention balances safety requirements with manufacturing precision capabilities.
2Reliability
If reactant-guiding channels are integrated into the carrying container, then hydrogen concentration is minimized and safety is improved, but the manufacturing complexity increases
Solution Approach 1:
The reactant-guiding channels are integrated directly into the carrying container structure during the same manufacturing process. This merging of fluid guidance functionality into the existing mold process avoids additional manufacturing steps while maintaining safety benefits.
3Volume of moving object
If the carrying container fills most of the space of the power supply unit, then compactness is improved, but the design flexibility and adaptability decrease
Solution Approach 1:
The carrying container is designed with modular cut-outs that can be configured to accommodate different component arrangements. This segmentation allows the same basic container design to adapt to various power supply unit configurations while maintaining compactness.
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 simplifies assembly, reduces hazards by minimizing hydrogen concentration, ensures safe operation, and provides a compact, reliable power supply unit with reduced pressure drops and effective heat management, enhancing safety and efficiency.
Implementation Method 1
A carrying container (2, 3) made of expanded plastic with cut-outs and a reactant-guiding channel, which serves as a shell, fixing means, and insulator
Implementation Method 2
guiding reactants to fuel cells to minimize hydrogen concentration and prevent misdirected air flows
Implementation Method 3
a power supply unit, which draws at least some of its power from a fuel cell stack, in particular a fuel cell stack with polymer electrolyte membrane fuel cells
Data Source
AI summary
The invention presents a possible way of converting power supply units, in particular compact power supply units, which are critical for safety into stable, impact-resistant fuel cell units by using expanding plastic.