A statistical method for analyzing lifetime of a battery pack

Sasaki, Daisuke; Tsukiyama, Shuji; Matsunaga, Mariko; Ishibashi, Osamu; Takahashi, Shingo

doi:10.1109/pesgm.2015.7286118

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…In this paper, we proposed a modified version of our statistical method [5] for estimating the distribution of lifetime of a battery pack, when the degradation curve and its distribution of each cell are given. The method is different from the original version [5] in the treatment of initial distribution.…”

Section: Conculsionsmentioning

confidence: 99%

“…In the design of battery packs, such a method is important, since cells in a battery pack do not show the same behavior, and the performance of a battery pack is not the same as a cell. Thus, we proposed a statistical method to analyze lifetime of a battery pack for given degradation curve and its distribution of a single cell with respect to the number of charge-discharge cycles [5].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose a modified version of the method in [5]. The modification is on a treatment of initial distribution of battery capacity caused by variability of production.…”

Section: Introductionmentioning

confidence: 99%

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A statistical method for analyzing lifetime of a series-connected battery cells

Sasaki

Tsukiyama

Matsunaga

et al. 2015

2015 15th International Symposium on Communications and Information Technologies (ISCIT)

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In order to establish a sustainable society, a large variety of secondary batteries are necessary, each of which is a battery pack composed of many battery-cells connected in series and parallel. Such a battery pack must have an optimal connection suitable to its application. However, the optimality cannot be claimed deterministically in the design stage, since the battery behavior heavily depends on the environment of usage and the variability of production. To cope with this situation, we propose a statistical method for analyzing the distribution of lifetime of a battery pack composed of cells connected in series, when aging curve and its distribution of a single cell are given. We also show some experimental results of aging curves of cells and series-connected battery modules to evaluate our method.

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Section: Conculsionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%