Separator Plate Weld Layout for Uniform Bead Compression
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Solution Overview
Problem
Existing separator plates in electrochemical systems face issues of inhomogeneous bead compression leading to leaks or short-circuits due to asymmetrical design of conveying channels, which can damage the membrane electrode assembly and require adjustments that are difficult to implement.
Innovation Solution
A separator plate design with first weld sections extending parallel to conveying channels, connecting individual plates to prevent divergence and reduce the risk of short-circuits, while maintaining efficient fluid connection to the electrochemically active region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If asymmetrical design of conveying channels is used to improve fluid connection efficiency, then fluid connection efficiency is improved, but inhomogeneous bead compression occurs leading to leaks or short-circuits
Solution Approach 1:
The patent applies asymmetry principle by designing weld sections with different configurations (first weld sections extending parallel to conveying channels, second weld sections extending perpendicular to conveying channels) to compensate for the asymmetrical conveying channel design. This creates a balanced overall structure that maintains both fluid connection efficiency and bead compression uniformity.
2Stability of the object's composition
If weld sections are added to connect individual plates, then plate alignment stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the welding function with the existing conveying channel structure by positioning weld sections along the conveying channels. The first weld sections extend parallel to the conveying channels and the second weld sections extend perpendicular to the conveying channels, integrating structural reinforcement with fluid transport pathways.
3Reliability
If bead arrangement is made symmetrical to improve compression uniformity, then bead compression uniformity is improved, but fluid connection efficiency decreases
Solution Approach 1:
The patent applies local quality principle by creating different weld section configurations in different regions of the separator plate. First weld sections are positioned to maintain fluid connection efficiency along conveying channels, while second weld sections are positioned to ensure compression uniformity perpendicular to conveying channels, optimizing both functions locally.
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 design reduces the risk of short-circuits and damage to components by ensuring stable plate alignment, enhancing the efficiency and integrity of the electrochemical system.
Implementation Method 1
a plurality of first weld sections for connecting the two individual plates, which first weld sections extend substantially parallel to the conveying channels and are arranged in each case between the first conveying channels
Data Source
AI summary
Electrochemical systems comprising separator plates and the separator plates comprising a first individual plate and a second individual plate. The individual plate comprising: an electrochemically active region, at least one through-opening and a sealing bead. Conveying channels adjoin a bead flank of the sealing bead and the conveying channels connecting the through-opening and the sealing bead interior. A plurality of first weld sections connecting the two individual plates and the first weld sections extend in the direction of the first conveying channels and arranged between the first conveying channels.