Through its digital control interface the VLB-X device offers a great flexibility and can easily be integrated in any system.
The VLB-X design is more than a simple association of batteries. The battery cell manufacturer is SAFT and the cells have already been selected and qualified for the use on-board small satellites.
Battery blocks are constructed from matched cells, normally from the same manufacturing batch. Cycle testing has been performed to classify and select cells into groups with smaller tolerances to minimize variability within one block.
To provide a dynamic solution which takes into account the ageing and operating conditions of the cells, the control electronics provides cell balancing to prevent individual cells from becoming overstressed. The internal microprocessor measures continuously the cell voltage and is able to switch autonomously a balance current for the cells with an outstanding higher voltage or capacity.
The detailed characteristics of balancing can be determined from the host controller via the digital communication interface.
In addition, the internal electronics prevents each single cell against short-cut and provides overcharge and over-discharge emergency features.