High power / High voltage rechargeable batteries open new opportunities for space missions
- Paper number
IAC-08.C3.3.3
- Author
Mr. Nicolas Paquin, SAFT, France
- Coauthor
Mr. Yannick Borthomieu, SAFT, France
- Year
2008
- Abstract
Next generation of launchers, satellites and scientific missions are requesting more and more high power (permanent or pulses). The introduction of a range of rechargeable cells capable of delivering up to ultra high power addresses these needs and opens new horizons for future space missions. High voltage is often linked to high power and such need becomes more and more common for space & defence applications. The aim of the high voltage is to carry reasonable current in the harness of the electrical systems. Among the new applications are: • Aerospace applications such as aircraft APU supply (back-up power to operate the flight control surfaces during taxi, takeoff, flight, and landing), electric thrust vector control (TVC) systems for the launchers, radars on-board satellites. • Defence applications Navy :ROV, AUV & UUV… , Army: hybrid terrestrial vehicles, Air force: AUV... The power cells are rechargeable Lithium-ion chemistries. This is a very interesting feature for electrically actuated thrust vector control in lieu of conventional hydraulic system to absorb energy resulting from braking operations. This innovative concept will be illustrated by the batteries for the TVCs of the four stages of the VEGA rocket. Power cells are also an excellent alternative to super-capacitors as they combine advantages of energy and power at the same time. They can deliver from 12 to 18 kW/kg.. Moreover, a new Lithium-ion chemistry “VL Fe” making a break-through in safety under abuse conditions will be described. The power cells offer other advantages such as good electrical performances at low temperature (down to -70°C). They are excellent choice for use is the nearby of cryogenic tanks environment or deep space missions. The focus of this paper is the presentation of the electrical and safety performances of these power cells.
- Abstract document
- Manuscript document
IAC-08.C3.3.3.pdf (🔒 authorized access only).
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