Research and development

Lithium iron phosphate (LiFePO4) will be the preferred technique battery for the propulsion of vehicles and other applications where high currents and a long lifetime will be of interest. Iron Phosphate lithium batteries are based on the original composition of lithium-ion, LiFePO4, however, is the cathode used in place of lithium cobalt dioxide (LiCoO2). These can be found in most laptops, cell phones, MP3 players etc. LiFePO4 is an inherently safe material to use as cathode because exothermic reaction does not occur as in LiCoO2 can happen: LiFePO4 battery cell can ignite or explode, not even in extreme conditions. LiFePO4 cells are able to handle high discharge, they contain no toxic substances and have a very long life. These different properties have led to popularity inter alia electric vehicles (see also ‘Application’).

CYCLE LIFE BY DIFFERENT DEPTH OF DISCHARGE

EFFICENCY PER HOURS OF DISCHARGE

KILOWATT-HOURS PER KILO

LITHIUM CHARACTRESTICS
M2POWERLIFEPO4 LiMn2O4 LiCoO2 PbA (Leadacid)
ENERGY STORAGE GOOD GOOD VERY GOOD BAD
CYCLELIFE 1000-2000 300-800 300-500 200-300
TOTAL COST OF OWNERSHIP VERY GOOD ACCEPTABLE ACCEPTABLE ACCEPTABLE
SAFETY GOOD UNSAFE DURING HIGH DISCHARGE UNSAFE DURING HIGH DISCHARGE GOOD
SIZE ACCEPTABLE GOOD VERY GOOD BAD
WEIGHT GOOD GOOD VERY GOOD BAD
OPERATING TEMPERATURE GOOD -45 grC to 70 grC BAD > 50 grC BAD < -20 grC > 50 grC GOOD BAD < 0 grC
 BATTERY MANAGEMENT

The battery management system (BMS) is one of the crucial parts in our Lithium Ferro batteries. The battery management system ensures a long life, ease of use and an even security. The battery management system of M2 Power includes various features such as under voltage protection, protection against reverse polarity and high currents. Also the BMS ensures the maintenance of the different cells so that all individual cells behave as a whole.

RESEARCH AND DEVELOPMENT

In January 2012 M2 Power has its research and development department based in the European Space Innovation Centre of ESA in Noordwijk.

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In this complex M2 Power develops the next generation of its batteries by doing research into the battery management system, the battery and the chargers.