Capacity adjustment apparatus and capacity adjustment method for battery pack
AssigneeNissan Motor Co., Ltd.
InventorsYukio Uesugi, Shinsuke Yoshida
Life of this patent
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Abstract
A capacity adjustment circuit provided in conjunction with each cell discharges the corresponding cell if the cell voltage is higher than a bypass operating voltage and, as a result, the extent of inconsistency among the voltages at the individual cells is minimized. A cell switching circuit switches the connections between the individual cells and the capacity adjustment circuits over predetermined time intervals.
Claims20
A capacity adjustment apparatus for a battery pack constituted by connecting a plurality of cells in series, comprising:
- a plurality of capacity adjustment devices that discharge cells with voltages higher than a predetermined voltage;
- and
- a switching device that switches connections between the plurality of cells and the plurality of capacity adjustment devices.
A capacity adjustment apparatus for a battery pack constituted by connecting a plurality of cells in series, comprising:
- a plurality of capacity adjustment means for discharging cells with voltages higher than a predetermined voltage;
- and
- a switch means for switching connections between the plurality of cells and the plurality of capacity adjustment means.
A battery pack capacity adjustment method through which a cell with a voltage higher than a predetermined voltage among a plurality of cells constituting a battery pack is discharged via a capacity adjustment devices, wherein:
- connections between the plurality of cells and a plurality of capacity adjustment devices are switched.
Dependencies are inferred from the claim text.