Electrolyzer Sub-Stack Insulation for Flexible Cell Stack Assembly
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Solution Overview
Problem
Existing electrolyzers are costly to produce and lack flexibility in operation and maintenance, particularly in water electrolysis for hydrogen production.
Innovation Solution
An electrolyzer design with cell stacks subdivided into sub-stacks, insulated by an insulator, allowing for parallel or series electrical connections, and a clamping device for secure assembly, enabling flexible operation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cell stacks are divided into sub-stacks with insulators, then ease of manufacture and maintenance is improved, but device complexity increases
Solution Approach 1:
The cell stack is divided into multiple cell sub-stacks that can be manufactured, assembled, tested, stored, and transported separately. Each sub-stack contains a specific number of electrolysis cells and is electrically isolated by insulators, enabling modular construction and simplifying manufacturing and maintenance processes.
2Adaptability or versatility
If cell sub-stacks are electrically insulated from each other, then flexibility in electrical connections is improved, but device complexity increases
Solution Approach 1:
Electrical insulation between cell sub-stacks is achieved through insulators positioned between adjacent sub-stacks, allowing flexible configuration of electrical connections (series or parallel) while maintaining structural organization and simplifying wiring requirements.
3Stability of the object's composition
If multiple insulators are arranged between cell sub-stacks, then mechanical stability is improved, but loss of space increases
Solution Approach 1:
The insulators serve multiple functions simultaneously: they provide electrical insulation between cell sub-stacks, maintain mechanical spacing and alignment, and contribute to the overall structural stability of the cell stack assembly, thereby minimizing space loss while achieving multiple objectives.
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
Facilitates easier manufacturing, assembly, and maintenance of larger cell stacks with reduced material and production costs, while allowing for versatile operation with renewable energy sources and improved mechanical stability.
Implementation Method 1
The insulator is arranged between the cell sub-stacks such that the inner ends of the cell sub-stacks, which are in contact with the insulator, are electrically insulated from one another
Implementation Method 2
Electrolyzers, also known as electrolysis devices, are used to carry out electrochemical electrolysis. During electrolysis, electrical energy is used to force a redox reaction in order to produce substances that are difficult or expensive to produce in large quantities using purely chemical processes
Implementation Method 3
The arrangement of cell stacks and insulator, because the cell stacks and insulator are arranged as a stack—that is, in a row within the cell stack—can be clamped to the cell stack by a single clamping device
Data Source
Figure 1~2
Figure 3a~3b
Figure 4~5
AI summary
The invention relates to an electrolyzer (1, 17) with a cell stack comprising a first cell sub-stack (5) and a second cell sub-stack (6), wherein opposite ends of the cell stack are electrically connected to each other via a current conductor (12). The cell sub-stacks (5, 6) are connected in parallel or in series with each other, and an insulator (14) is arranged between the cell sub-stacks (5, 6), wherein the arrangement of cell sub-stacks (5, 6) and insulator (14) is clamped by a common clamping device.