Stepped Electrolysis Cell Frame for Leak-Safe Layer Assembly

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing production methods for electrolysis cells, particularly for large areas, are complex and expensive due to the need for precise arrangement of gas diffusion layers within a cell frame, leading to high production costs and potential leaks.

Innovation Solution

A cell frame with a step-like interior profile that includes a recess for a seal, allowing for simpler assembly by accommodating different-sized gas diffusion layers and a membrane electrode assembly, ensuring secure sealing and reduced assembly complexity through rotation of the cell frame during layer placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If gas diffusion layers are arranged with great precision in the cell frame, then the electrolysis cell functions reliably, but the production cost increases and assembly becomes more complex

Engineering Contradiction:

Improvereliable functioning of electrolysis cellVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The cell frame is divided into multiple levels with different heights, creating distinct zones for different components. The first gas diffusion layer is positioned at a first level while the second gas diffusion layer is positioned at a second level, allowing each layer to be independently arranged and secured without requiring precise alignment between them.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The membrane electrode assembly is nested between the two gas diffusion layers, with each layer providing support and containment. The multi-level structure creates nested zones where components are housed at different heights within the same cell frame volume.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If gas diffusion layers are arranged with great precision, then leakage is prevented, but production expense increases

Engineering Contradiction:

Improveleakage preventionVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The cell frame is segmented into multiple levels with different heights, creating distinct zones for different components. The first gas diffusion layer is positioned at a first level while the second gas diffusion layer is positioned at a second level, allowing each layer to be independently arranged and secured without requiring precise alignment between them.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The seals are pre-positioned in grooves within the cell frame structure before the gas diffusion layers are installed. This preliminary placement of sealing elements ensures that when the layers are positioned at their respective levels, leakage is prevented without requiring complex alignment procedures during assembly.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If the cell frame uses a complex structure to accommodate multiple layers, then assembly precision is improved, but the construction becomes more expensive

Engineering Contradiction:

Improveassembly precisionVSAvoidconstruction complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the cell frame have different heights and functions. The first region accommodates the first gas diffusion layer at a first height, while the second region accommodates the second gas diffusion layer at a second height, allowing each component to be optimized for its specific position and function.

Inventive Principle:

Principle #3Local quality

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

This approach simplifies the assembly process, reduces the risk of leaks, and allows for flexible membrane and gas diffusion layer contours, making the operation of electrolysis cells more reliable and cost-effective, especially for large cell areas.

Implementation Method 1

the protons pass through the proton exchange membrane

Methodology Applied

Scientific EffectIon conduction: Conduction (electrical)

Implementation Method 2

water is dissociated into hydrogen and oxygen

Methodology Applied

Scientific EffectElectrolysis: Electrolysis

Implementation Method 3

the water is oxidized to oxygen at the anode

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 4

the protons recombine to form hydrogen

Methodology Applied

Scientific EffectReduction: Reduction

Data Source

PatentUS12163240B2Electrolysis cell and method for producing the electrolysis cell

Publication Date: 2024.12.10 SIEMENS ENERGY GLOBAL GMBH & CO KG

AI summary

An electrolysis cell with a cell frame and to a method for producing an electrolysis cell, wherein the cell frame has a stepped inner profile. The inner profile has at least one support surface for receiving a planar component in the cell frame, and the support surface has a recess for a seal. A seal is first placed in the recess, and a membrane-electrode unit, a first gas diffusion layer, and an electrically conductive top layer are then introduced into the cell frame. The cell frame is then rotated, and a second gas diffusion layer is applied. The electrolysis cell produced in this manner includes the cell frame with the seal and the different layers.