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Batteries and Chargers
News Release from: Saft Space and Defence Batteries | Subject: VES Li-ion battery technology
Edited by the Electronicstalk Editorial
Team on 06 March 2008
Battery contract signed for Korean
satellites
The Korean Aerospace Research Institute will use Saft's space VES Li-ion battery technology in its Kompsat-3 and Kompsat-5 Earth observation satellites.
Saft has been awarded a major contract by the Korean Aerospace Research Institute (Kari) in South Korea to supply sophisticated lithium-ion (Li-ion) battery systems to power the Kompsat-3 and Kompsat-5 Earth observation satellites The project will use Saft's space VES Li-ion battery technology with integrated management electronics designed specifically for demanding LEO (Low Earth Orbit) satellite missions
This article was originally published on Electronicstalk on 18 Dec 2006 at 8.00am (UK)
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Saft has made an important breakthrough in the Russian aerospace market by winning a contract to supply Li-ion batteries to power Roskosmos' new Meteor-3M satellite.
Li-ion batteries keep satellite on track
The Corot mini-LEO satellite is powered by Saft rechargeable lithium-ion (Li-ion) batteries as it searches nearby stars for rocky earth-like planets.
The battery system, which is also suited to small GEO (geostationary Earth orbit) and MEO (medium Earth orbit) satellite missions, is the fruit of Saft's collaboration with ASP (Advanced Space Power Equipment ) in Germany, to develop fully integrated space power systems.
Kari's Kompsat Earth observation satellite programme is intended to gather geographic information as well as monitoring and preventing environmental disasters.
Kompsat-3 will feature optical technology, while Kompsat-5 will use SAR (synthetic aperture radar).
Further reading
Satellite powered by rechargeable batteries
A freshly launched low earth orbit satellite is the first to be powered by Saft's commercially available space-qualified MP 176065 rechargeable lithium-ion (Li-ion) batteries.
Lithium iron phosphate enters battery mix
Saft offers the highest performance LiFePO4 cells available today, measured in specific power or specific energy.
The satellites are planned for launch in 2011 and 2010 respectively.
The Saft battery systems will work in conjunction with the solar array on the Kompsat satellites to power the onboard electronics.
When the solar array is fully exposed to the sun it will provide the satellite's power as well as charging the batteries.
When the solar array is 'eclipsed' by the earth, with no direct sunlight, the batteries will power the satellite.
This very demanding charge and discharge cycle will be repeated every 100 minutes, the time the Kompsat satellites will take to complete one Earth orbit.
The battery systems for Kompsat-3 satellites will comprise 48 Saft VES 100 Li-ion cells in a 4S12P configuration, providing a nominal capacity of 104Ah while Kompsat-5 battery systems will comprise 52 VES 100 Li-ion cells in a 4S13P configuration.
Saft VES space-proven Li-ion cells offer a number of advantages for LEO satellites.
These include the ability to save weight and space, enabling the satellite to carry the maximum active payload, while also delivering high performance and reliability.
The addition of the integrated battery management electronics of ASP will enable Saft to provide a fully autonomous battery system incorporating cell balancing and bypass activation.
The VES cells are manufactured in Saft's facility in Bordeaux, France and will be assembled into the battery systems in Saft's facility in Poitiers.
Initially, Saft will deliver a complete battery system for qualification testing in the first quarter of 2009.
This will be followed by the flight battery systems for Kompsat-5 in June 2009 and Kompsat-3 in January 2010. Request a free brochure from Saft Space and Defence Batteries ...
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