Abstract
An evaluation was given on applicability of Ni/metal hydride battery (AA-size, 1 Wh) to a load conditioning application. Unit cells and multicell batteries (series and parallel connections) were tested of their basic characteristics under charge and discharge conditions. The volumetric energy density of the Ni/metal hydride battery is 175 Wh/l, 2.5 times that of lead-acid batteries. The battery has an energy efficiency of 88% to 90% and superior output characteristics satisfying the development targets. On the other hand, it was found that the battery has optimal conditions in specific charging methods (potential regulating method, time regulating method, and constant voltage and constant current method). To operate the battery at a high efficiency and for a long life, the constant current and constant voltage charge would be most advantageous, but the charge method requires further improvements and discussions. In five-cell series and parallel operation tests, difference in the capacity and the internal resistance was the factor to vary the charge/discharge characteristics, but the efficiency was about the same as that of unit cells. 18 refs., 28 figs., 10 tabs.
Kumai, K;
Ikeya, T;
Iwahori, T;
[1]
Sakai, S
[2]
- Central Research Institute of Electric Power Industry, Tokyo (Japan)
- The Furukawa Battery Co. Ltd., Yokohama (Japan)
Citation Formats
Kumai, K, Ikeya, T, Iwahori, T, and Sakai, S.
Evaluation of a nickel/metal hydride battery for a load conditioner. Performance of 1Wh AA-size cell and multicell; Nickel/suisokabutsu denchi no load conditioner eno tekiyosei hyoka. 1Wh kyu tandenchi no seino to kumidenchi tokusei.
Japan: N. p.,
1992.
Web.
Kumai, K, Ikeya, T, Iwahori, T, & Sakai, S.
Evaluation of a nickel/metal hydride battery for a load conditioner. Performance of 1Wh AA-size cell and multicell; Nickel/suisokabutsu denchi no load conditioner eno tekiyosei hyoka. 1Wh kyu tandenchi no seino to kumidenchi tokusei.
Japan.
Kumai, K, Ikeya, T, Iwahori, T, and Sakai, S.
1992.
"Evaluation of a nickel/metal hydride battery for a load conditioner. Performance of 1Wh AA-size cell and multicell; Nickel/suisokabutsu denchi no load conditioner eno tekiyosei hyoka. 1Wh kyu tandenchi no seino to kumidenchi tokusei."
Japan.
@misc{etde_10121060,
title = {Evaluation of a nickel/metal hydride battery for a load conditioner. Performance of 1Wh AA-size cell and multicell; Nickel/suisokabutsu denchi no load conditioner eno tekiyosei hyoka. 1Wh kyu tandenchi no seino to kumidenchi tokusei}
author = {Kumai, K, Ikeya, T, Iwahori, T, and Sakai, S}
abstractNote = {An evaluation was given on applicability of Ni/metal hydride battery (AA-size, 1 Wh) to a load conditioning application. Unit cells and multicell batteries (series and parallel connections) were tested of their basic characteristics under charge and discharge conditions. The volumetric energy density of the Ni/metal hydride battery is 175 Wh/l, 2.5 times that of lead-acid batteries. The battery has an energy efficiency of 88% to 90% and superior output characteristics satisfying the development targets. On the other hand, it was found that the battery has optimal conditions in specific charging methods (potential regulating method, time regulating method, and constant voltage and constant current method). To operate the battery at a high efficiency and for a long life, the constant current and constant voltage charge would be most advantageous, but the charge method requires further improvements and discussions. In five-cell series and parallel operation tests, difference in the capacity and the internal resistance was the factor to vary the charge/discharge characteristics, but the efficiency was about the same as that of unit cells. 18 refs., 28 figs., 10 tabs.}
place = {Japan}
year = {1992}
month = {Apr}
}
title = {Evaluation of a nickel/metal hydride battery for a load conditioner. Performance of 1Wh AA-size cell and multicell; Nickel/suisokabutsu denchi no load conditioner eno tekiyosei hyoka. 1Wh kyu tandenchi no seino to kumidenchi tokusei}
author = {Kumai, K, Ikeya, T, Iwahori, T, and Sakai, S}
abstractNote = {An evaluation was given on applicability of Ni/metal hydride battery (AA-size, 1 Wh) to a load conditioning application. Unit cells and multicell batteries (series and parallel connections) were tested of their basic characteristics under charge and discharge conditions. The volumetric energy density of the Ni/metal hydride battery is 175 Wh/l, 2.5 times that of lead-acid batteries. The battery has an energy efficiency of 88% to 90% and superior output characteristics satisfying the development targets. On the other hand, it was found that the battery has optimal conditions in specific charging methods (potential regulating method, time regulating method, and constant voltage and constant current method). To operate the battery at a high efficiency and for a long life, the constant current and constant voltage charge would be most advantageous, but the charge method requires further improvements and discussions. In five-cell series and parallel operation tests, difference in the capacity and the internal resistance was the factor to vary the charge/discharge characteristics, but the efficiency was about the same as that of unit cells. 18 refs., 28 figs., 10 tabs.}
place = {Japan}
year = {1992}
month = {Apr}
}