Controlling charging current supplied to plurality of cell modules connected in parallel

摘要

Even when current values of a current that flows to a plurality of cell modules connected in parallel are different, efficient charging is performed. A charge control device that controls a charging current to be supplied to a plurality of cell modules connected in parallel compares a maximum current value, selected from current values detected by a current sensor provided in each of a plurality of the cell modules, with a reference current value predetermined as a maximum current value of the current to be supplied to secondary batteries, and controls the charging current to be supplied to a plurality of the cell modules based on a comparison result.

主权项

1. A charge control device that controls a charging current to be supplied to a plurality of chargeable and dischargeable cell modules connected in parallel, wherein
the charge control device performs:
a selecting operation that selects the maximum value as a maximum current value from current values detected by a current sensor provided in each of a plurality of the cell modules;a comparing operation that compares the maximum current value which is selected with a reference current value predetermined as a maximum current value of the current to be supplied to the cell modules; andan increasing/decreasing operation that increases or decreases, on the basis of a comparison result of the comparing operation, the charging current to be supplied to a plurality of the cell modules by a predetermined specified value, wherein the charge control device repeatedly performs the selecting operation, the comparing operation and the increasing/decreasing operation until the maximum current value which is selected becomes the same value as the reference current value.