| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage system in which whether a resistance value is lowering or not can be determined in a resistance element of an RC filter circuit.SOLUTION: A storage system according to the present invention comprises: a plurality of power storage elements connected in series; a voltage detection circuit which detects a voltage value of each of the power storage elements; an RC filter circuit which has a resistance element and a capacitor and is provided on a voltage detection line between each power storage element and the voltage detection circuit; a discharge circuit which is provided on the voltage detection line, has a resistance element and a switch, and discharges each power storage element by turning on the switch, in equalization processing for equalizing voltage values in the plurality of power storage elements; and a controller which determines that a resistance value of the resistance element is lowering when an amount of voltage drop of the power storage element due to the equalization processing is larger than a predetermined amount of voltage drop. |
