Fuel Cell Bundle Gas Flow Segmentation
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Solution Overview
Problem
Fuel cell stacks arranged in a staggered configuration face inefficiencies in reaction gas distribution, leading to inadequate gas supply and reduced power-generation efficiency.
Innovation Solution
A fuel cell bundle design featuring columnar fuel cell stacks with side-by-side series-connected fuel cells and a connecting member, along with a second gas flow channel regulating member, ensures efficient gas distribution between stacks by forming a dedicated gas flow channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fuel cell stacks are arranged in a staggered configuration to feed a large quantity of reaction gas in between the fuel cell stacks, then the gas flow channel is widened, but the reaction gas flows sideward from between the fuel cell stacks and cannot be efficiently fed to the fuel cells
Solution Approach 1:
The gas flow channel is segmented into multiple regions using partition walls that extend from the first end plate toward the second end plate. These partition walls divide the channel into a first gas flow channel region for fuel gas and a second gas flow channel region for air, ensuring that each type of gas flows efficiently to its intended fuel cells without lateral mixing or flow diversion.
Solution Approach 2:
Different regions of the gas flow channel are given different functions through the partition walls. The first gas flow channel region is optimized for fuel gas flow to fuel cells at specific locations, while the second gas flow channel region is optimized for air flow to fuel cells at other locations, allowing each region to serve its specific purpose efficiently.
2Volume of moving object
If fuel cell stacks are arranged in a staggered configuration, then space for gas flow is increased, but adequate quantity of reaction gas cannot be efficiently fed to the fuel cells
Solution Approach 1:
The gas flow channel is segmented into multiple regions using partition walls that extend from the first end plate toward the second end plate. These partition walls divide the channel into a first gas flow channel region for fuel gas and a second gas flow channel region for air, ensuring that each type of gas flows efficiently to its intended fuel cells without lateral lateral flow or mixing.
Solution Approach 2:
The partition walls extend in the longitudinal direction (from first end plate to second end plate) rather than only in the transverse direction, creating a three-dimensional segmentation of the gas flow channel. This dimensional approach allows efficient gas distribution while maintaining the staggered configuration benefits.
Data Source
AI summary
A fuel cell bundle includes a plurality of columnar fuel cell stacks extending in a first direction that are disposed spaced apart so that side surfaces thereof face each other, the fuel cell stacks each having a first gas flow channel along the first direction and also having a plurality of series-connected fuel cells disposed side-by-side in a second direction intersected by the first direction; a connecting member for electrically connecting series-connected fuel cells of a fuel cell stack with series-connected fuel cells of a fuel cell stack adjacent thereto; and a second gas flow channel regulating member for forming a second gas flow channel along the first gas flow channel between itself and the connecting member, the connecting member and the second gas flow channel regulating member being disposed between the adjacent fuel cell stacks.