Development Of A Battery Regulator For A Modular Satellite - Master’s Thesis
The rising population of space debris increases the potential danger to all spacecraft, one possible way to handle the problem of space debris is On-Orbit Servicing. iBoss (Intelligent Building Blocks for On-Orbit Satellite Servicing and Assembly) is a concept that intends to reduce the space debris, by designing the satellite as modules and connecting them, opening an opportunity for servicing and reconfiguration. This thesis describes the “Development of a battery regulator for a modular satellite(iBoss).” A battery regulator is a power regulator to regulate the charging and discharging of batteries. In general, the battery regulator consists of a Battery Charge Regulator (BCR) and a Battery Discharge Regulator (BDR) with protection circuits. The BCR consists of a component from Linear Technology LT3650-8.4 which integrates the functions of a battery charger configured as a buck converter. The BDR consists of an element from Texas Instruments TPS40210Q1 which is a boost converter to supply regulated stepped-up power to the loads. The protection circuit is formed by a component from Allegro Microsystems ACS711, voltage dividers, and an Arduino. The thesis discusses the design and implementation of a battery charge regulator for a Lithium-ion battery in a decentralized and modular satellite. The requirements, hardware and software design along with the implementation of such a battery regulator for two 4.2V Li-ion batteries in series are discussed in detail in this thesis.
Front side of the PCB
Back side of the PCB
PCB 21cms from a Cobalt 60 source for radiation testing
Project link: https://github.com/eddiewebb/bosh-bamboo