Fuel Cell Separator Reinforcement Rib Design
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Solution Overview
Problem
The existing fuel cell separator designs face challenges in maintaining sufficient joining strength between the separator and the load receiver member, leading to potential stress concentration and deformation under external loads.
Innovation Solution
Incorporating a reinforcement rib in the outer peripheral portion of the separator adjacent to the joint portion with the load receiver member, which extends perpendicular to the load application direction, enhances the joining strength and suppresses deformation by distributing the load effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the load receiver member is joined to the separator to receive external loads, then the separator can withstand external loads, but stress concentrates at the joint portion reducing joining strength
Solution Approach 1:
A reinforcement rib is provided in the outer peripheral portion of the separator adjacent to the joint portion. This local structural enhancement increases the stiffness and strength specifically at the joint area without affecting the overall separator design, thereby distributing stress and preventing concentration at the joint portion between the separator and load receiver member
2Ease of manufacture
If the separator structure is simplified, then manufacturing is easier, but deformation occurs under external loads
Solution Approach 1:
Instead of complicating the entire separator structure, a reinforcement rib is locally added to the outer peripheral portion adjacent to the joint portion. This localized enhancement provides the necessary structural stability to resist deformation under external loads while maintaining the simplicity of the overall separator design and manufacturing process
Data Source
AI summary
A fuel cell separator member forming a power generation cell includes a first separator, and a load receiver member disposed in a manner to protrude outward from the first separator. Reinforcement ribs extending in a direction in which the load receiver member protrudes are provided in a part of an outer peripheral portion of the first separator, the part being adjacent to a joint portion.