Gs Yuasa International Ltd.

Yuki Sugiyama

Yuta Kashiwa

Yukiko Fujino

Takanobu Araki

Based on a voltage of a secondary battery detected by a voltage measurement unit, a residual capacity is acquired from a correlation between the voltage and the residual capacity of the secondary battery stored in a memory, and a state of charge (SOC) which is a ratio of the residual capacity to a reference capacity is obtained. The reference capacity is set to a prescribed amount less than a residual capacity at full charge. Further, an information processing unit determines an abnormality of a module based on a comparison between the SOC and an SOC obtained by another method.

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Kyoto, Japan

Yuki Sugiyama