Electrolysis Stack Layout With Intermediate Plates for High Voltage
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Solution Overview
Problem
Existing electrolysis devices face limitations in achieving high operating voltages and efficient heat dissipation due to grounding configurations that restrict the number of electrolysis cells per stack, leading to inefficient energy use and potential safety issues with electrolyte line connections.
Innovation Solution
An electrolysis device design with two electrolysis units, each having intermediate plates, where end plates are interconnected and intermediate plates are connected to rectifier outputs, allowing high operating voltage distribution and efficient heat dissipation through both ends, with media fittings at both ends for electrolyte management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of electrolysis cells in a stack is increased to achieve higher operating voltage, then the operating voltage is improved, but the voltage drop and thermal loss increase, restricting further cell addition
Solution Approach 1:
The electrolysis device is divided into multiple electrolysis units (first electrolysis unit, second electrolysis unit, etc.), each containing a stack of electrolysis cells. This segmentation allows the total operating voltage to be distributed across multiple units, reducing the voltage drop and thermal loss within each individual unit while maintaining the overall high operating voltage required for efficient electrolysis operation.
2Power
If intermediate plates are added to distribute voltage across multiple electrolysis units, then the voltage distribution is improved, but the device complexity and footprint increase
Solution Approach 1:
The intermediate plates serve multiple functions simultaneously: they act as electrical connection elements for voltage distribution between electrolysis units, provide structural support for the stacked configuration, and facilitate the connection of electrolysis liquid lines. This multi-functionality reduces the need for separate components, thereby minimizing device complexity and footprint while achieving effective voltage distribution.
3Reliability
If end plates are grounded to ensure safety, then safety is improved, but the connection of electrolysis liquid lines becomes complicated due to potential differences
Solution Approach 1:
The intermediate plates are electrically connected to each other and to the end plates, creating equipotential surfaces throughout the electrolysis device. This equipotential design ensures that all connection points are at the same electrical potential, eliminating potential differences that would complicate the connection of electrolysis liquid lines, while still maintaining safety through proper grounding of the overall structure.
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
Enables operation at high voltages with efficient heat dissipation and safe electrolyte handling, maximizing the number of cells per stack and optimizing the electrolysis process.
Implementation Method 1
the rectifier unit (16), which provides a first potential (P1) via a first output (17) and a second potential (P2) via a second output (18)
Implementation Method 2
The electrolysis cells each include a first electrode (10) and a second electrode (11), at which an electrolysis liquid (12) is electrolytically split
Implementation Method 3
losses within the rectifier unit are essentially proportional to the switched current, but relatively independent of the switched operating voltage
Data Source
AI summary
An electrolysis device includes two electrolysis units, which each includes two end plates. The electrolysis units each includes an intermediate plate approximately or exactly in the middle between its end plates and each includes a stack of series-connected electrolysis cells between the intermediate plates and the end plates. Each stack of electrolysis cells includes two electrodes, at which an electrolysis liquid is partially electrolytically split, so that the remaining electrolysis liquid is admixed with a respective electrolysis gas in the area of the two electrodes after the electrolytic splitting. The end plates are electrically connected to one another at least in pairs. The electrolysis device includes a rectifier unit, which provides two potentials (P1, P2) via two outputs, each output being electrically connected to one terminal of the intermediate plate of the one electrolysis unit and to one terminal of the intermediate plate of the other electrolysis unit.