Battery Units

TSD has designed and developed several batteries for space applications based on Ag-Zn, Ni-Cd, Ni-MH and Li-ions cells. Ag-Zn batteries have been employed in applications like Space Shuttle Get Away Special that require very low discharge rate during storage period before flight.

Ni-Cd and Ni-MH batteries have been used in short duration missions like sounding rockets and unmanned vehicles in applications requiring medium/high discharge current during operation.

Li-Ion technology offers significant advantages with respect to Ni-Cd and Ni-MH technologies in terms of specific energy density [Wh/Kg] and volumetric energy density [Wh/l]; furthermore it presents a wider operating temperature range and the cell nominal voltage is from 3.6 to 3.9[V] thus allowing a reduction of the cell number in the battery string. A number of Li-Ion batteries providing each 1200 W and 1464 Wh have been developed for Unmanned Space Vehicle of CIRA (Centro Italiano Ricerche Aerospaziali).


 USV Battery (2007) - LOW VOLTAGE BATTERY 

Main Specifications
Number of cells 64
Type of cell  Li-Ion
Total Power  1200[W]
Number of string  8
String Voltage 30[V]
Total Energy  1464[Wh]
Other Features SMBus I/F

 

 

 

 

 

 

 


LOW VOLTAGE BATTERY for Minitexus 5 (1998), Maser 8 (1999), Maxus 5 (2003), Maser 10 (2005)

Main Specifications
Number of cells 50
Type of cell  Ni-Cd
Cell Capacity  1.1[Ah]
Number of string  2
String Voltage 30[V]
String Energy  33[Wh]


 

 


Minitexus 5 (1998) - HIGH VOLTAGE BATTERY

Main Specifications
Number of cells 150
Type of cell  Si-Zn
Cell Capacity  1.5[Ah]
Number of string  1
Battery No-Load Volt. 225[V]
Max Discharge Rate  12[A]
Battery Energy 380[Wh]

 

 


Space Shuttle STS 57 - LOW VOLTAGE BATTERY

Main Specifications
Number of cells 80
Type of cell  Ag-Zn
Cell Capacity  15[Ah]
Number of string  4
String Voltage 30[V]
String Energy  450[Wh]