Control device and method and power supply device
View Patent ↗A control device includes a controller causing a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series to be charged with a cell balance, and the controller includes a detector detecting a voltage of each of the cell blocks, an updater sequentially updating a maximum voltage of the detected voltage of each of the cell blocks, and a discharger discharging a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.
1. A control device comprising a controller causing a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series to be charged with a cell balance; wherein
the controller includes
a detector detecting a voltage of each of the cell blocks,
an updater sequentially updating a maximum voltage of the detected voltage of each of the cell blocks, and
a discharger discharging a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.
2. The control device according to claim 1 , wherein the controller performs cell balance control so that a voltage range between a maximum voltage and a minimum voltage of each cell block detected is within a specified voltage range defined in advance.
3. The control device according to claim 2 , wherein the discharge target voltage range and the specified voltage range have a relation of the specified voltage range≧the discharge target voltage range.
4. The control device according to claim 1 , wherein the controller stops charging of the plurality of cell blocks when the detected voltage of each cell block becomes equal to or larger than a specified maximum voltage defined in advance.
5. A control method of a control device including a controller causing a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series to be charged with a cell balance; wherein
the controller detects a voltage of each of the cell blocks,
sequentially updates a maximum voltage of the detected voltage of each of the cell blocks, and
discharges a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.
6. A power supply device comprising:
a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series;
charging means for charging the plurality of cell blocks; and
control means for causing the plurality of cell blocks to be charged with a cell balance; wherein
the control means includes
detecting means for detecting a voltage of each of the cell blocks,
updating means for sequentially updating a maximum voltage of the detected voltage of each of the cell blocks, and
discharging means for discharging a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.