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Concept
UltraBattery
Résumé
UltraBattery is a trademark of the lead-acid battery technology commercialized by Furukawa Battery Co. Ltd. UltraBattery has thin carbon layers on spongy lead active material for negative plates. The original idea that combines ultracapacitor technology with lead–acid battery technology in a single cell with a common electrolyte came from the Commonwealth Scientific and Industrial Research Organisation (CSIRO).
Research conducted by independent laboratories, such as the United States's Sandia National Laboratories, the Advanced Lead-Acid Battery Consortium (ALABC), the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and commercial tests by East Penn Manufacturing, Furukawa Battery and Ecoult indicate that in comparison with conventional valve regulated lead acid (VRLA) batteries, UltraBattery technology has higher energy efficiencies, a longer lifetime and superior charge acceptance under partial state of charge (SoC) conditions.
Combining the two technologies in one battery cell means that UltraBattery works very efficiently compared with conventional lead acid technologies largely due to the fact that it can be operated for long periods in a partial state of charge (pSoC), whereas conventional lead acid batteries are more typically designed for high SoC use (i.e. when the battery is close to fully charged). Operating in the partial SoC range extends the battery's life chiefly by reducing sulfation and by reducing time spent operating at very high and very low states of charge, where various side reactions tend to cause deterioration. A conventional VRLA battery tends to deteriorate quickly when operated in this partial SoC range.
The original idea of UltraBattery came from CSIRO.
The development of UltraBattery was funded by the Australian government. Japanese company Furukawa Battery Co., Ltd also contributed to the development of UltraBattery technology, and the Japanese government funded part of its development through the New Energy and Industrial Technology Development Organization (NEDO).
Source officielle
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