Fuel Cell Resin Frame Venting for Unblocked Gas Supply

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Solution Overview

Problem

Existing fuel cells face issues with gas supply inhibition to the power generation unit due to the adhesiveness of the sealing member in the manifold, leading to blocked gas flow paths.

Innovation Solution

A fuel cell design featuring a resin frame with adhesive layers on both sides, incorporating a manifold opening with a smaller inner diameter and ventilation portions between the manifold and power generation openings, allowing gas ventilation regardless of resin frame deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the sealing member has adhesiveness to seal the manifold, then sealing performance is improved, but the gas flow path from the manifold to the power generation unit is blocked due to venting

Engineering Contradiction:
Improvesealing performanceVSAvoidgas supply to power generation unit
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The resin frame is divided into multiple functional regions: an adhesive layer for sealing, a manifold opening for gas inlet, and a ventilation portion for gas passage. This segmentation allows each region to perform its specific function without interfering with others, resolving the contradiction between sealing and gas flow.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the resin frame have different properties: the adhesive layer provides sealing adhesion, while the ventilation portion provides gas flow passage. This local differentiation of properties allows the same component to simultaneously achieve both sealing performance and gas supply functionality.

Inventive Principle:
Principle #3Local quality

2Strength

If the resin frame is deformed due to gas flow pressure, then gas flow path may be blocked, but maintaining frame integrity compromises sealing

Engineering Contradiction:
Improveframe integrityVSAvoidgas flow rate
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The resin frame design incorporates a ventilation portion that allows controlled deformation and gas passage under pressure. The frame can dynamically adjust to gas flow pressure while maintaining overall structural integrity, preventing complete blockage while preserving sealing functionality.

Inventive Principle:
Principle #15Dynamics

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

Ensures uninterrupted gas supply to the power generation unit by preventing blockage, maintaining high gas flow rates and enhancing safety against short circuits.

Implementation Method 1

the resin frame has an adhesive layer on both sides; the pair of separators are adhered via the resin frame

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentUS20250246648A1Fuel cell
Publication Date: 2025.07.31 TOYOTA JIDOSHA KK
  • US20250246648A1 patent drawing
  • US20250246648A1 patent drawing

AI summary

A fuel cell is configured to suppress the inhibition of gas supply to the power generation unit. A fuel cell, wherein the fuel cell comprises at least a pair of separators and a resin frame; wherein each of the pair of separators has at least one manifold; wherein the pair of separators are adhered via the resin frame; wherein the resin frame has an adhesive layer on both sides; wherein the resin frame has a manifold opening corresponding to the manifold and a power generation opening corresponding to a power generation unit; wherein an inner diameter of the manifold opening is smaller than that of the manifold; and wherein the resin frame has at least one ventilation portion between the manifold opening and the power generation opening.