Nested Manifold Assembly for Compact Dual-Stack Fuel Cell Flow Routing
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Solution Overview
Problem
The challenge in dual-stack fuel cell systems is optimizing the spatial arrangement of manifolds to minimize space usage and avoid gaps while efficiently distributing and collecting oxidant and coolant media.
Innovation Solution
A nested manifold assembly is designed with a first and second manifold structure, each integrally formed and detachably connected, featuring branch and main channels that overlap and extend in specific orientations to optimize space utilization and facilitate seamless media distribution and collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If six separate manifolds are used for dual-stack fuel cell systems, then the distribution and collection of oxidant and coolant can be achieved, but the space occupation increases and gap spaces are formed that cannot be fully utilized
Solution Approach 1:
The patent combines multiple separate manifolds into a single integrated manifold assembly that serves both stacks. The manifold includes first and second manifold structures with branch channels and main channels that are integrally formed and detachably connected, allowing consolidated distribution and collection of oxidant and coolant to multiple stacks, thereby reducing the number of separate components and optimizing space utilization.
Solution Approach 2:
The patent implements a nested configuration where the first and second manifold structures are arranged with overlapping channels. The first main manifold channel extends at least partially superposed over the first branch channel, and the second main manifold channel extends at least partially superposed over the second branch passage, creating a compact nested arrangement that reduces overall footprint while maintaining functional independence of each media flow path.
2Productivity
If manifolds are arranged to cover more area, then media distribution can be more comprehensive, but the available installation space is reduced
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of separate manifolds to a three-dimensional nested configuration. The channels are arranged in overlapping layers with the first main manifold channel and second main manifold channel extending partially superposed over their respective branch channels, utilizing vertical space to achieve comprehensive media distribution within a compact footprint.
Solution Approach 2:
The nested arrangement of manifold structures allows comprehensive media distribution through multiple branch channels while maintaining a compact overall size. The integrally formed first and second manifold structures with overlapping channels create an efficient three-dimensional flow distribution network that covers all necessary connection points without requiring excessive installation space.
3Adaptability or versatility
If multiple separate manifold components are used, then flexibility in configuration is achieved, but the device complexity and production cost increase
Solution Approach 1:
The patent integrates multiple manifold functions into a single assembled unit where the first and second manifold structures are integrally formed within each structure and detachably connected to each other. This merging reduces the total number of separate components and assembly steps while maintaining the flexibility to service and replace individual manifold structures independently.
Solution Approach 2:
The manifold assembly is divided into detachably connected first and second manifold structures, each with its own integrally formed branch and main channels. This segmentation allows for independent manufacturing, quality control, and replacement of each structure while maintaining overall system flexibility and reducing assembly complexity compared to a single monolithic manifold.
Data Source
AI summary
A manifold assembly for a dual-stack fuel cell system includes a first manifold structure for delivering one of an oxidant and a coolant, the first manifold structure including a first branch channel and a first main manifold channel in fluid communication with the first branch channel and extending at least partially superposed over the first branch channel, wherein the first branch channel is open on a side opposite to the first main manifold channel for sealing connection to a surface of a stack end plate, such that one of the oxidant and coolant is guided along the surface of the stack end plate therein. The manifold assembly further includes a second manifold structure for delivering the other of the oxidant and coolant, the second manifold structure including two end plate interfaces configured to be connected to the stack end plate in a manner perpendicular to the surface of the stack end plate, a second branch passage fluidly connecting the two end plate interfaces, and a second main manifold channel in fluid communication with and extending at least partially superposed over the second branch passage. A stack end plate and a dual-stack fuel cell system are also disclosed.