Battery-Electrolyser Low-Pressure Management System

As renewable energy adoption grows, integrated energy storage solutions are needed. Traditional battery management systems are not designed to account for gas storage, making them unsuitable for hybrid battery-electrolyser energy storage systems. This paper describes the design of a custom low-pressure gasometer designed to regulate the flow of hydrogen from a battery-electrolyser. The gasometer, optimised to work with lead-acid battery-electrolysers, captures and regulates hydrogen produced from surplus renewable energy. Its modular design allows for scalable and adaptable storage solutions. Initial tests confirmed the gasometer's ability to operate within pressure limits, with consistent performance across continuous cycling. The use of 3D printing for the prototype enabled rapid development and customisation. However, the study highlighted the importance of precise construction to ensure uniform performance across gasometer units. Further testing under real-world conditions and the completion of the compressor design is necessary to transition the gasometer from a prototype to a production-ready system, ready for integration into larger-scale hydrogen storage applications.