Patent ID: 11230205

Abstract:
A power storage unit is configured with a plurality of cell strings (St1, St2, St3), where the cell strings are parallel-connected, and each cell string (St1, St2, St3) is constituted by a plurality of series-connected cells (E111 to E1nn, E211 to E2nn, E311 to E3nn). Voltage detector (111 to 13n) detects a voltage of each of the plurality of cell strings (St1, St2, St3). A plurality of switches (S1, S2, S3) are respectively inserted in the plurality of cell strings (St1, St2, St3). Management unit (20) performs, in a non-running state of vehicle (2) that power supply system (1) is mounted on, an equalization process to equalize a voltage and/or capacity between the plurality of cell strings (St1, St2, St3) by turning on at least two of the plurality of switches (S1, S2, S3).