Patent ID: 11065961

Abstract:
An electric circuit switches connection among a plurality of storage cell units including a first storage cell unit and a second storage cell unit, a load of the plurality of storage cell units, and a power supply supplying power to the plurality of storage cell units. The electric circuit includes: a first rectifier configured to rectify a current flowing between a first pole terminal of the power supply and a first pole terminal of the first storage cell unit with homopolarity as polarity of the first pole terminal of the power supply; a second rectifier configured to rectify a current being different from the current and flowing between the first pole terminal of the power supply and a first pole terminal of the second storage cell unit with homopolarity as the polarity of the first pole terminal of the power supply; and a connection switching device configured to connect the plurality of storage cell units in series between the first pole terminal of the first storage cell unit and the first pole terminal of the second storage cell unit and release the series connection of the plurality of storage cell units during a period in which the power supply supplies power to the plurality of storage cell units.