Fuel Cell Metal Separation Plate Protrusion Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fuel cell stacks require separate cooling plates, increasing manufacturing costs and volume, while air-cooled systems necessitate additional components, and both struggle with efficient cooling and humidification performance without a separate cooling plate.
Innovation Solution
A metal separation plate with protrusion patterns and gaskets that allow for air paths to be opened in specific directions, enhancing cooling and stack performance without a separate cooling plate, and blocking moisture to improve humidification of the membrane electrode assembly (MEA).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a water-cooled metal separation plate is used, then cooling performance is improved, but manufacturing cost increases due to additional components (pump, deionizer, heat exchanger)
Solution Approach 1:
The patent merges the cooling function with the separation plate by forming cooling water channels directly within the plate structure. This integration eliminates the need for separate cooling plates and reduces the number of components required, thereby lowering manufacturing cost while maintaining effective cooling performance through the integrated water channels.
Solution Approach 2:
The metal separation plate is designed to perform multiple functions simultaneously: it serves as both a separator for reaction gases and a cooling component with integrated water channels. This multi-functionality reduces the overall system complexity and component count, addressing the contradiction between cooling performance and manufacturing cost.
2Device complexity
If an air-cooled metal separation plate is used, then manufacturing cost is reduced, but additional components (cooling plate, cathode separation plate) are required increasing volume
Solution Approach 1:
The cooling function is merged directly into the separation plate structure through integrated water channels, eliminating the need for separate cooling plates and cathode separation plates. This integration reduces the overall stack volume while maintaining manufacturing cost efficiency.
Solution Approach 2:
The separation plate performs dual functions as both a gas separator and a cooling component with integrated channels. This multi-functionality eliminates redundant components, thereby reducing the overall volume of the fuel cell stack while keeping manufacturing costs low.
3Ease of manufacture
If conventional channel structures are used, then manufacturing is simplified, but cooling performance and humidification performance are insufficient
Solution Approach 1:
The channel structure is segmented into multiple protrusion patterns with air paths opened in specific directions. This segmentation creates optimized flow paths that enhance cooling performance by directing air flow effectively while maintaining manufacturing simplicity through the modular protrusion pattern design.
Solution Approach 2:
The channel structure features localized protrusion patterns with air paths opened in specific directions rather than uniform channels throughout. This local quality optimization enhances cooling performance in critical areas while maintaining overall manufacturing simplicity through consistent patterning methods.
4Temperature
If air paths are fully opened, then cooling efficiency is improved, but moisture control and humidification performance deteriorate
Solution Approach 1:
The air paths are selectively opened in specific directions rather than fully opened throughout. This local quality approach allows optimized air flow for cooling in certain areas while maintaining moisture control in other areas, thereby achieving both cooling efficiency and proper humidification performance simultaneously.
Solution Approach 2:
Instead of fully opening all air paths, the design inverts the approach by selectively opening paths in specific directions and leaving others closed. This inverted strategy enables simultaneous achievement of cooling efficiency through opened paths and moisture control through closed paths, resolving the contradiction between cooling and humidification.
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 achieves excellent cooling and stack performance without a separate cooling plate, reduces manufacturing costs and volume, and improves humidification by minimizing air path disturbances and blocking moisture leaks, ensuring efficient gas supply and heat management.
Implementation Method 1
an air-cooled metal separation plate has an effect of reducing the manufacturing cost of a fuel cell system... the air passing through the opened air paths cools the metal separation plate
Implementation Method 2
improving humidification performance of a membrane electrode assembly (MEA) by blocking moisture leaking from the inside of the closed air paths
Data Source
AI summary
Disclosed are a metal separation plate for a fuel cell stack, which includes protrusion patterns each having an air path opened in a short-side direction or protrusion patterns each having an air path of which one side is opened and the other side is closed, and can not only improve cooling performance and stack performance without a separate cooling plate mounted therein, and but also improve humidification performance of a membrane electrode assembly (MEA) by blocking moisture leaking from the inside of the closed air paths, and a fuel cell stack having the same.