Study of life evaluation methods for Li-ion batteries for backup applications

The backup characteristics of lithium-ion batteries were investigated using commercial prismatic lithium-ion cells with a LiCoO 2/graphite cell system. An accelerated method of estimating the lifetime of lithium-ion batteries was developed. It was found that higher temperatures and voltages accelera...

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Veröffentlicht in:Journal of power sources 2003-06, Vol.119, p.902-905
Hauptverfasser: Asakura, Kaoru, Shimomura, Makoto, Shodai, Takahisa
Format: Artikel
Sprache:eng
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Zusammenfassung:The backup characteristics of lithium-ion batteries were investigated using commercial prismatic lithium-ion cells with a LiCoO 2/graphite cell system. An accelerated method of estimating the lifetime of lithium-ion batteries was developed. It was found that higher temperatures and voltages accelerate the degradation of the cells: a 15 °C increase in temperature cuts the cell life in half, and about 0.1 V increase in charging voltage also cut the cell life in half.
ISSN:0378-7753
1873-2755
DOI:10.1016/S0378-7753(03)00208-8