DMFC Charger

Schematic of an MTI DMFC system. Courtesy of MTI Micro Fuel Cells. 

In practical operation, the current cannot be set at the limiting current. Instead, it should be set at a current slightly lower than the limiting current, and as the cell decays with time, the current set point should be decreased accordingly. The ratio of the working current to the limiting current represents the methanol utilization. Part of the unused methanol diffuses to the cathode side and the other part is taken out by the CO2 exhaust at the anode. For automatic operation, it is better to automatically trace the peak power and allow the fuel cell to work near the peak power. 

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There is a relatively wide range of battery chargers are mainly based in DMFC. Different companies have launched in recent years systems that allow battery recharge without power grid, as well as to increase the autonomy of systems. 

In 2009, Panasonic Corporation presented a prototype of battery charger based on DMFC with an output power of 20 W for mobile applications (volume 360 cm. ... 

Fig. 9.8 DMFC Dynario charger from Toshiba (Reproduced from Ref. [19] with permission)...

SFC Energy AG (formerly Smart Fuel Cell) is a world leader in developing DMFC systems as battery chargers for various applications. It has achieved sales of more than 25,000 units, which is one of the world s highest fuel cell sales figmes. Its product portfolio includes the EFOY 600, 900, 1200, 1600,... 

SFC Energy AG (formerly Smart Fuel Cells) A world leader in developing and manufacturing DMFC systems as battery chargers for various apphcations. SFC Energy AG was foimded by Dr. Manfred Stefener in 2000 with headquarters located in Germany. Company website http //www.sfc.com. 

In the light traction sector, the only marketable products in Germany are also manufactured by SFC Energy. They are based on the DMFC EFOY Pro Series. These devices are referred to as range extenders, internal chargers for the batteries of electric scooters or small electric cars with a maximum electric power of 90 W, which make the range of these vehicles greater. 

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