Fuel Cell Stack Manifold Insert for Uniform Media Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fuel cell systems face challenges in uniformly distributing media flow to all fuel cells within the stack, with outer cells receiving minimal or varying fluid flow at different temperatures.
Innovation Solution
A flow insert is integrated into the flow section of the fuel cell system, featuring flow recesses and guiding elements to control the media flow, ensuring even distribution by deflecting it onto the fuel cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional flow arrangement is used to supply media flow to the fuel cell stack, then the structure is simple, but the media flow is distributed unevenly to the fuel cells with outer cells receiving minimal or varying flow
Solution Approach 1:
A flow insert is introduced as an intermediary component within the flow arrangement to mediate the distribution of media flow. The flow insert includes flow-guiding elements and recesses that actively redirect and evenly distribute the media flow to all fuel cells, preventing the uneven distribution that occurs in conventional simple flow arrangements.
Solution Approach 2:
The flow insert is segmented into multiple functional elements including flow-guiding surfaces, recesses, and directing elements that divide and redirect the media flow into multiple streams. This segmentation allows the single media flow source to be evenly distributed to multiple fuel cells, achieving uniformity without requiring individual flow control for each cell.
2Temperature
If the flow arrangement supplies media flow directly to the fuel cell stack, then the system is simple, but temperature variations occur across different fuel cells due to uneven flow distribution
Solution Approach 1:
The flow insert acts as a thermal distribution mediator by ensuring uniform media flow to all fuel cells. The flow-guiding elements and recesses create multiple flow paths that deliver consistent temperature media to each fuel cell, preventing the temperature variations that occur with direct conventional flow supply.
3Productivity
If outer fuel cells are exposed to minimal fluid flow, then the flow arrangement structure is simple, but the performance of outer fuel cells deteriorates due to insufficient media supply
Solution Approach 1:
The flow insert introduces a new dimensional aspect to flow distribution by creating three-dimensional flow paths within the flow arrangement. The recesses and guiding elements redirect flow in multiple directions, ensuring that outer fuel cells receive adequate media supply from dimensions that would not be accessible in a simple linear flow arrangement.
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 flow insert achieves a more uniform media supply to all fuel cells, preventing uneven distribution and temperature variations, without requiring individual adjustments to each cell.
Implementation Method 1
the media flow is discharged in a controlled manner through the at least one flow recess, rebounds off an inner wall of the flow section, which faces the side of the flow insert facing away from the fuel cell stack, and is deflected in the opposite direction onto the fuel cell stack
Data Source
Figure 1a~3
Figure 4a~4b
Figure 5~6
AI summary
The invention relates to a fuel cell system (50) comprising a fuel cell stack (40) and a flow assembly (30) for supplying a media flow (1) to the fuel cell stack (40). The flow assembly (30) has a flow section (10) which is fluidically connected to the fuel cell stack (40), and the flow assembly (30) additionally has a flow insert (20) which is arranged in the flow section (10), extends in a main direction of extent along the flow section (10), and has a flow inlet (24) for admitting the media flow (1) and at least one flow opening (22) that is formed on the flow insert (20) side (21) facing away from the fuel cell stack (40).