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There are two versions of the battery modules, with storage capacities of 5.8 kWh or 10 kWh. The company EST-Floattech plans to offer a variant with lithium iron phosphate (LFP) battery chemistry.
EST-Floattech has introduced a new nickel-manganese-cobalt (NMC) battery storage system for offshore applications.
“The new system is suitable for virtually any purpose on board; from propulsion (all-electric, hydrogen-electric, diesel-electric, etc.) to peak savings, auxiliary power and more,” a company spokesperson told pv magazine . “The scope of application of this battery system extends to all maritime (niche) markets, eg ferries, aquaculture power supply, container ships, inland water tankers, motor and sailing yachts, work boats, service providers, etc. crew, offshore wind support vessels, warships, dredgers and many more.”
The Dutch maritime energy storage specialist said the Octopus line includes its battery management system, which can be integrated with a range of battery configurations and chemistries. The company currently offers two versions of its NMC battery modules: High Energy and High Power variants. The first has a nominal voltage of 52 V and a capacity of 192 Ah. A single battery module has a capacity of 10 kWh and measures 709mm x 582mm x 248mm, with a weight of 86.5kg.
“High Energy batteries are designed for large-scale, long-life battery installations, so they are ideal for medium- and large-sized ships that sail electrically and charge overnight, for example,” says EST-Floattech.
High Power batteries have short charge and discharge times and can be used in fast-charging ferries that make short journeys. They have a nominal voltage of 52 V and a capacity of 112 Ah. A single battery module has a capacity of 5.8 kWh, measures 709mm x 582mm x 248mm and weighs 82kg.
Up to nine battery modules can be stacked. A High Energy system with three strings connected in parallel and 12 modules per string achieves a capacity of 360 kWh, while a High Power system has a capacity of 208.8 kWh.
In addition to a fixed configuration, the Octopus series is available as a 3 meter or 6 meter containerized solution that can be placed on different types of vessels.
The battery modules are IP65 rated and DNV type certified. EST-Floattech claims that they have more than 10 years of useful life. The company is also developing lithium iron phosphate (LFP) battery chemistry technology.
“The market is growing, to improve sustainability and because of the targets set by the regulations,” says Walter van der Pennen, CCO of EST-Floattech. “The energy transition in the maritime market has really started, and in recent years there has been an increase in electrically powered vessels. As a result, there is an increasing differentiation in the applications that shipowners and shipbuilders need, not only for direct propulsion, but also for various equipment, machinery, peak performance and hotel loads.”
The system has been fully developed in Badhoevedorp (The Netherlands) |
