Electrolysis Device Series-Connected Stacks Potential Equalization
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Solution Overview
Problem
High-voltage electrolysis devices face challenges in maintaining electrical safety and compact design due to long conduit paths required for reactant and coolant distribution, which increase resistance and risk of electro-oxidation, while also affecting the purity of the water.
Innovation Solution
The device connects channels between electrolysis cells directly in series to a feed conduit, ensuring the same potential across all cells, reducing the need for long conduit paths and minimizing potential differences, with channels for reactant, coolant, and product discharge arranged for efficient and compact operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long conduit paths are used to connect feed conduits to electrolysis cells in high-voltage stacks, then electrical resistance increases and risk of electro-oxidation increases, but the device can accommodate higher voltage operation
Solution Approach 1:
The feed conduit is segmented into multiple sections, with feed injection points positioned between electrolysis cell groups. This divides the originally long single conduit path into shorter segments, reducing the length of individual conduit sections exposed to high voltage and minimizing electro-oxidation risk while maintaining the ability to accommodate high voltage operation across the entire stack
Solution Approach 2:
The invention introduces intermediate feed injection points that act as mediators between the feed conduit and electrolysis cells. These intermediate points allow reactant and coolant to be introduced at multiple locations along the stack, effectively breaking up the long conduit path into shorter segments and reducing the electrical resistance and electro-oxidation risk in each segment
2Reliability
If long conduit paths are used in electrolysis stacks, then the facility size increases and through-flow resistance increases, but adequate cooling and reactant supply can be ensured
Solution Approach 1:
The cooling and reactant supply system is segmented into multiple sections with feed injection points positioned between electrolysis cell groups. This segmentation creates shorter conduit paths that reduce through-flow resistance while ensuring adequate cooling and reactant supply to each section of the stack, preventing the facility size from increasing unnecessarily
Solution Approach 2:
The invention applies local quality by providing feed injection points at specific locations between electrolysis cell groups rather than using a single long conduit. This allows optimized local supply of reactants and coolant to each section, ensuring adequate cooling efficiency while minimizing the overall conduit path length and associated resistance
3Reliability
If long conduit paths are used to supply distilled water, then the electrical connection resistance increases, but the water purity can be maintained, however facility size increases
Solution Approach 1:
The water supply system is segmented with feed injection points positioned between electrolysis cell groups, creating shorter conduit paths for distilled water. This segmentation maintains water purity by reducing the length of conduits through which water must travel, thereby minimizing exposure to potential contamination sources while also reducing facility size requirements
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 configuration ensures reliable electrical safety, reduces resistance, and maintains water purity by eliminating potential differences, allowing for efficient and compact electrolytic gas generation while adhering to safety guidelines.
Implementation Method 1
electrolytic production of gas, in particular for generating hydrogen and oxygen from water
Implementation Method 2
Channels with which the reactant and the mostly likewise required coolant are fed, pass through the stacks
Implementation Method 3
the electrical connection of the end plates of both cell stacks which is entailed by the series connection of the cell stacks
Implementation Method 4
a surface change by way of electro-oxidation due to the potential difference
Data Source
AI summary
An electrolysis device includes two stacks (1) whose electrolysis cells (2) are clamped between an end plate (7) which has an exclusively mechanical function, and an end plate (6) which also serves for feeding in the reactant, the coolant and the discharge of the reaction products and the coolant. The two stacks (1) with regard to their polarity are constructed in a reverse manner and are connected in series in a manner such that the connection-leading end plates (6) and herewith also their connections are subjected to the same potential on operation.