Research and development applied to Lithium-ion batteries (increasingly used as 'energy storage banks' in hybrid marine powered propulsion systems in workboats and leisure craft due to their high energy density) has recently revealed ways to make these batteries safer, cheaper yet with better performance. The relevant research findings come from John Hopkins University Applied Physics Laboratory (APL) and from Japan's National Institute of Advanced Industrial Science and Technology (AIST).
Lithium-ion Battery Bank: Photo US Federal Govt.
Inexpensive Sensor Warns of Lithium-ion Battery FailureBattery malfunctions (and occasionally fires) occur in all Lithium-ion powered applications ranging in size from the cellphone right through to large hybrid or electrically powered plant and present a safety challenge to manufacturers. Typically such catastrophic failures result from ‘thermal runaway', which occurs when a cell in the battery reaches a critical temperature. Searching ... [More]
At last month’s International Tug & Salvage Conference, Corvus Energy Ltd presented a paper on a new battery type – Nickel Manganese Cobalt , NMC for short, that is particularly good for propulsion applications. It uses safe chemistry that is stable and reliable. is sealed and is compact. It can deliver a high power until fully discharge, doesn't’t deteriorate if left uncharged and hardly looses its charge over time. What does this mean for the marine industry? One example was the announcement at the Conference of an all electric tug boat, so far it is only for training purposes but heralds the beginning of a new era of electric driven vessels whether pure electric drive or hybrid diesel electric. [More]