English translation from original article published by Danish paper Ingeniøren, “Vandkølede batterier sikrer lynladning af elfærger på Øresund”, by
1,200 kWh of electricity will need to be available when two ferries from HH Ferries operating on the Elsinore-Helsingborg route convert to full battery operation next year. This will require automated charging and a unique cooling system for the lithium batteries.
Chimney smoke and engine rumble will soon become an old seafarer’s tale on HH Ferries’ two largest ferries operating on the Elsinore-Helsingborg route, which will be fully converted to battery operation next year.
The ferries ‘Tycho Brahe’ and ‘Aurora’ are now diesel-electric, and the diesel engines from Wärtsilä will remain as a backup – but after the rebuild, the electric motor that drives the screw, will be supplied by 640 lithium batteries placed in four 32-foot containers on top of the vessel between the two chimneys.
The batteries must be charged with approximately 1,200 kWh every time the ferries are at port. In Elsinore they have 5.5 minutes and in Helsingborg 9 minutes, therefore, there is no time to waste, which is why the charging process will be fully automated, says Henrik Fall Hansen – senior chief engineer on board of Tycho Brahe:
“Our main supplier, ABB, also makes industrial robots, and the plan is that we connect the high-voltage cables using a robot.”