Ceramic-Clamped Fuel Cell Stack for Creep-Resistant Insulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fuel cell assemblies face issues such as bulkiness, high weight, high heat dissipation, high cost, low thermal and electric insulation, susceptibility to thermal cycling, and inability to function in extreme environmental conditions, particularly low temperatures, which limits their off-grid applications.
Innovation Solution
A fuel cell assembly with a creep-resistant clamping structure using ceramic materials for the clamping elements and insulation housing, ensuring a high degree of thermal and electric insulation, maintaining a constant clamping force, and operating efficiently across a wide temperature range, including extreme conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional clamping structures are used in fuel cell assemblies, then the assembly can maintain structural integrity, but the assembly becomes bulky and heavy
Solution Approach 1:
The patent applies parameter changes by transitioning from metallic clamping elements to ceramic clamping elements, fundamentally changing the material parameter. This material substitution enables the clamping structure to be both lightweight and structurally sound, resolving the contradiction between weight reduction and structural integrity maintenance.
Solution Approach 2:
The patent employs composite materials by integrating ceramic clamping elements with the fuel cell stack assembly. The ceramic material provides both the necessary mechanical strength for clamping and the desired weight reduction, achieving a composite solution that simultaneously addresses weight and structural requirements.
2Reliability
If conventional materials are used for clamping elements, then manufacturing is easier, but creep occurs under high temperature and stress
Solution Approach 1:
The patent changes the material parameter from conventional metals to advanced ceramics, which inherently possess superior creep resistance at high temperatures. This parameter change directly addresses the reliability requirement while the standardized ceramic component design mitigates the manufacturing complexity through established ceramic fabrication processes.
Solution Approach 2:
The patent employs readily available ceramic materials that can be manufactured using established processes, effectively treating the clamping elements as reliable, long-lasting components that replace conventional metals. The use of standard ceramic materials balances manufacturing ease with enhanced creep resistance.
3Loss of energy
If insufficient thermal insulation is provided, then the assembly size is reduced, but heat dissipation increases compromising efficiency
Solution Approach 1:
The patent uses ceramic materials for both clamping elements and thermal insulation, creating a composite structure where the same material serves multiple functions. The ceramic insulation layer provides effective thermal barrier properties while maintaining a compact form factor, reducing heat loss without significantly increasing assembly volume.
Solution Approach 2:
The patent applies multi-functionality by using ceramic materials that simultaneously serve as clamping elements, thermal insulation, and structural components. This universal material approach enables the assembly to achieve good thermal insulation performance within a compact volume, addressing both energy loss and size constraints.
4Reliability
If the clamping force is not evenly distributed, then the assembly is simpler to manufacture, but degradation occurs after thermal cycling
Solution Approach 1:
The patent changes the physical parameters of the clamping elements by using ceramic materials with specific mechanical and thermal properties. These parameter changes enable even distribution of clamping force across the fuel cell stack, enhancing durability during thermal cycling while maintaining manufacturability through standardized component design.
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 results in a lightweight, high-performance fuel cell assembly with improved thermal insulation, durability, and the ability to function effectively under extreme conditions, minimizing creep and relaxation, and maintaining efficiency over numerous thermal cycles.
Implementation Method 1
The at least one clamping element is made of a creep-resistant material
Implementation Method 2
which displays a high degree of thermal and electric insulation
Implementation Method 3
which displays a high degree of thermal and electric insulation
Data Source
AI summary
Disclosed herein is a fuel cell assembly including a fuel cell stack including one or more fuel cells stacked in a stacking direction. The fuel cell assembly further includes a first and second clamping plate for clamping the fuel cell stack between the first clamping plate and the second clamping plate in the stacking direction. The fuel cell assembly further includes at least one clamping element for interconnecting the first and second clamping plate. The clamping element is made of a creep-resistant material.