Gs Yuasa International Ltd.

Hayato Tawa

Daisuke Konishi

Jun Ikemoto

Kazuyuki Kawamoto

In an inspection apparatus for an assembled battery having a plurality of energy storage devices connected in series, based on a voltage difference between a first energy storage device with the first-lowest voltage and a second energy storage device with the second-lowest voltage during charge or discharge among the plurality of energy storage devices, an abnormality of the first energy storage device is detected.

Inspection apparatus, inspection method, inspection program, and assembled battery system

A power storage devicecomprises: a plurality of power storage elements C-Cthat are connected in series; energy transfer circuitsprovided respectively to the plurality of power storage elements C-C; a common busto which the energy transfer circuitsof the plurality of power storage elements C-Care commonly connected; and a control device. Each energy transfer circuitincludes one or a plurality of switching transformers Tr, each switching transformer having a first windingA that is connected to the power storage elements C-Cand a secondary windingB that is connected to the common bus. The control deviceuses the switching transformers Tr of the energy transfer circuitsto transfer energy between the power storage elements via the common bus, thereby equalizing the voltages of the power storage elements C-C. The common busis in an electrically floating state.

Growing community of inventors

Kyoto, Japan

Hayato Tawa