Saft’s Space VES range of rechargeable lithium-ion (Li-ion) cells has been designed specifically to meet the on-board power needs of commercial, civil and military satellites. VES cells made their first space flight in 2004 and have established a significant flight heritage on GEO, MEO and LEO satellites.
The VES range includes VES 100, VES 140 and VES 180 cells.
System Approach
To maximize performance and ensure total safety, Saft integrates individual Li-ion cells both mechanically and electrically into battery systems that are designed to the specific needs of each application. These battery systems incorporate electronics for the control and monitoring of performance, thermal and safety management.
Main applications
- GEO (Geostationary satellites)
- MEO (Middle Earth orbit) navigation satellites
- Large LEO (Low Earth orbit) satellites
Benefits
- smaller and lighter than conventional space battery technology (30 to 50% weight reduction compared to Ni-H2)
- high specific energy; from 118 to 165 Wh/kg
- low thermal power and high energy efficiency results in smaller solar panels and battery radiators
- easier launch pad operations
- no memory effect
- state of charge is directly related to voltage, providing an effective energy gauge
- modular approach provides flexibility for battery system design