Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Reexamination Certificate
2007-10-09
2007-10-09
Tso, Edward H (Department: 2838)
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
Reexamination Certificate
active
10834973
ABSTRACT:
To provide a battery characteristic evaluation device and a battery characteristic evaluation method capable of precisely measuring a potential difference between a positive and negative electrode materials, without largely breaking the original battery shape of a sealed battery such as a sealed alkaline-manganese battery. A cylindrical alkaline-manganese battery sample30is prepared, wherein a bore hole of 1 mm diameter and 0.5 mm depth is provided in approximately the center of the side face of a can body, lead wires are provided in the positive and negative electrodes, a sealing material made of a resin is applied on the negative electrode so as not to come into contact with an electrolytic solution. The battery sample is dipped into a measuring cell10in which an electrolytic solution11is filled. A tip23of a Luggin tube21constructing a reference electrode20is placed near the bore hole40, a prescribed load is applied on the battery sample30, and a voltage between positive and negative electrodes per discharging time, and a voltage between a positive electrode and a reference electrode is measured, and from the values obtained, the voltage between the negative electrode and the reference electrode is calculated, thereby precisely measuring the potential difference between the positive and negative electrode materials.
REFERENCES:
patent: 5304433 (1994-04-01), Cherng
patent: 1021954 (1996-07-01), None
patent: 2046461 (1995-10-01), None
Fujishima et al., “Methods of Electrochemical Measurement,” Gihodo Publisher, Chapters 3 and 4, Experimental Chart 3.1, Fig. 3-2, no date.
Harigae Kenichi
Kitamura Toshiya
Dowa Electronics Materials Co., Ltd.
Tso Edward H
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