Paris, 4 November 2008
Li-ion batteries for
DCNS-designed SCORPENE submarines
DCNS is investigating the integration of new-generation batteries with SCORPENE
submarines, a concept that promises to double submerged endurance. This important
innovation was presented at the UDT (Undersea Defence Technology) Pacific 2008
show in Sydney, Australia, on 4 November.
Current-generation diesel-electric submarines use lead-acid batteries. To further improve the
performance capabilities of its SCORPENE range, DCNS has been working on the integration
of new-generation lithium ion batteries.
This new technology promises to double submerged endurance at high speed while at the
same time reducing the indiscretion rate, increasing range, improving safety and requiring less
maintenance, all essential criteria for submariners.
The SCORPENE design is compatible with both Li-ion batteries and the MESMA air-
independent propulsion system (AIP). MESMA alone enables a SCORPENE to patrol at low
speed for three weeks at a time without broaching the surface.
To achieve this breakthrough, DCNS has been working in close cooperation with Saft, a world
leader in the design, development and production of high-technology batteries. Saft assembles
Li-ion cells to form battery modules and modules into a battery system, complete with the
necessary control electronics and software, to power a submarine in complete safety. The Li-
ion cells developed by Saft for this application are similar to those used on satellites and have
already proven their long lifetime. Saft is also a major supplier of Li-ion batteries for both
manned and unmanned underwater vehicles.
The DCNS Group is one of Europe's leading players on the world market for naval defence
systems. To meet customer demands for more comprehensive and integrated systems, DCNS
acts as prime contractor for naval shipbuilding, integration and support by combining its own
development, marketing and production capabilities with those of selected partners. To
manage the complexity of such projects, the Group draws on in-house expertise in naval
architecture and systems engineering, ship assembly and integration and equipment design
and production, as well as through-life support. The DCNS Group employs 13,000 people and
generates annual revenues of around €2.8 billion.
Bertrand Baudry Virginie Lemière
+33 (0)2 97 12 19 67 +33 (0)1 40 59 53 57
+33 (0)6 64 46 91 01
Bertrand.firstname.lastname@example.org email@example.com www.dcnsgroup.com
Siège social : 2, rue Sextius-Michel - F-75732 Paris Cedex 15 - Tél. : +33 (0)1 40 59 50 00