Battery Energy Storage Systems (BESS)

A containerised BESS is a steel enclosure carrying heavy battery racks, with power electronics and cooling equipment packed in beside them. The box is lifted and shipped like any container, but at site it must also take seismic, wind and snow loads. Inside, the cells need a narrow temperature band right through the hottest months. A weak structure shows up as cracked frames or shifted racks, while poor cooling shows up later, as some racks ageing faster than the rest.

Shirsh Technosolutions supports BESS integrators and their engineers on the enclosure side of the system. We have analysed a 20 ft battery container in ANSYS Mechanical for seismic, wind and snow loading. On the thermal side we have used CFD in ANSYS Fluent to check enclosure air conditioning options for critical equipment shelters before they were bought. We have also predicted heat build-up in solar inverter enclosures and designed liquid cooling plates. The same methods apply to airflow and temperature spread across the battery racks inside a container.