Controlling charging current supplied to plurality of cell modules connected in parallel
First Claim
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, whereinthe 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; and
an 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.
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Abstract
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.
58 Citations
8 Claims
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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; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A charge control method for controlling a charging current that is supplied to a plurality of chargeable and dischargeable cell modules connected in parallel, comprising:
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a first step of selecting the maximum value as a maximum current value selected from current values detected by a current sensor in each of a plurality of the cell modules; a second step of comparing 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; and a third step of increasing or decreasing, on the basis of a comparison result of the second step, the charging current to be supplied to a plurality of the cell modules by a predetermined specified value, wherein the first step, the second step and the third step are repeatedly performed until the maximum current value which is selected becomes the same value as the reference current value.
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Specification