Develop a new geostationary Li-ion battery concept for Eurostar 3000 platform embedding:

• A battery packaging: the battery packaging for a single battery configuration requires significant redesign activities in order to take benefit of the simplification, optimisation and advantages which can be achieved at system level: It was necessary to split the single battery in two packs, each pack is derived from the current EUROSTAR 3000 battery concept.
• A new battery management concept: this activity will allow developing an autonomous balancing circuit included in a hybrid package. The hybrid solution has been chosen for recurring cost aspects. In addition, a new EPS on board software module is developed in order to simplify the battery management based only on the battery voltage.
• An optimisation of the VES140 thermal management: In order to improve the SAFT VES140 EOL performances, it is proposed to manage thermally the SAFT VES 140 cells at two different temperatures for equinox and solstice seasons. The proposed activity includes a new G4 Li-ion cells accelerated life test with a different regulation temperature.
• External by-pass removal: this activity is a complement of the on going ARTES 3 activity under the responsibility of SAFT but at module level in order to assess the feasibility to remove the by pass on the EUROSTAR 3000 platform.