Development a Power Management Unit for Small Direct Borohydride Fuel Cell - Li-Ion Battery Hybrid System

Sanli A. E., Gunlu G., AYTAÇ A.

Fuel Cell Seminar and Exposition, Connecticut, United States Of America, 5 - 08 November 2012, vol.51, pp.273-279 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 51
  • Doi Number: 10.1149/05101.0273ecst
  • City: Connecticut
  • Country: United States Of America
  • Page Numbers: pp.273-279
  • Gazi University Affiliated: Yes


In this study, a small portable borohydride fuel cell/ Li-ion battery hybrid system has been developed. The system consists of a single portable direct borohydride/peroxide fuel cell (DBPFC), Li-ion battery and power management unit (PMU). The battery has been used as a primary power sources and discharged at constant load. When its state of charge has reduced, the DBPFC has charged the battery and has powered the load simultaneously. A DC-DC Boost converter has been used as a PMU. The DBPFC has generated the energy of 20.7 mWh while Li-ion battery has consumed the energy of 5.9 mWh. Total efficiency of the DBPFC-Li-ion battery hybrid system has been calculated as 28.5%.