A modular electrolytic cell

The modular design of the electrolytic cell solves the problem of uneven flow field inside large-scale electrolytic cells, enabling independent control of fluid distribution and voltage and current, and improving the operational stability and safety of the electrolytic cell.

CN122081983APending Publication Date: 2026-05-26HUANENG CLEAN ENERGY RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG CLEAN ENERGY RES INST
Filing Date
2026-01-13
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The increasing size of electrolytic cells leads to poor uniformity of the internal flow field, uneven fluid distribution in the horizontal direction, and increased pressure difference in the vertical direction, resulting in uneven reaction, easy local overheating and overflow, and potential safety hazards.

Method used

The modular design includes multiple parallel electrolytic hydrogen production units in each sub-module. Fluid distribution and product discharge are achieved through seals and clamping plates. The flow ports of horizontally adjacent sub-modules are connected, and the cathodes and anodes of vertically adjacent sub-modules are electrically connected to achieve independent flow and voltage and current distribution.

Benefits of technology

It improves the uniformity and flexible control capability of the electrolytic cell, adapts to different dynamic working conditions, achieves stable operation under high output and wide power load, and reduces safety risks.

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Abstract

This invention proposes a modular electrolyzer comprising multiple sub-modules arranged in a rectangular array. Each sub-module includes multiple parallel-arranged hydrogen production units. Each hydrogen production unit includes a sealing element and a hydrogen production electrode assembly. The sealing element has two first through holes above it for electrolyte inflow; one first through hole has a first slot corresponding to and connected to the number of cathodes in the hydrogen production electrode assembly; the other first through hole has a second slot corresponding to and connected to the number of anodes in the hydrogen production electrode assembly. Below the sealing element are two second through holes for product outflow; one second through hole has a third slot corresponding to and connected to the number of cathodes in the hydrogen production electrode assembly; the other second through hole has a fourth slot corresponding to and connected to the number of anodes in the hydrogen production electrode assembly. This invention achieves high output and adaptability to various power load variations through independent control of each sub-module and coordinated control of all sub-modules.
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