Power storage device control system, power storage system, and electrical appliance
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsMinoru Takahashi, Junpei Momo, Yutaka Shionoiri
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Abstract
Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.
Claims15
A method for controlling an electric power, the method comprising the steps of:
- charging one of a first power storage element and a second power storage element by connecting a power source, and charging one of a third power storage element and a fourth power storage element by connecting the power source, wherein the one of the first power storage element and the second power storage element and the one of the third power storage element and the fourth power storage element connect in parallel, while discharging the other one of the first power storage element and the second power storage element, and discharging the other one of the third power storage element and the fourth power storage element, wherein the other one of the first power storage element and the second power storage element and the other one of the third power storage element and the fourth power storage element connect in series;
- and
- discharging the first power storage element the second power storage element the third power storage element, and the fourth power storage element by connecting a load, wherein the first power storage element and the second power storage element connect in parallel, wherein the third power storage element and the fourth power storage element connect in parallel, wherein the first power storage element connects to each of the third power storage element and the fourth power storage element in series, and wherein the second power storage element connects to each of the third power storage element and the fourth power storage element in series, thereby supplying a current to the load.
A method for controlling an electric power, the method comprising the steps of:
- charging one of a first power storage element and a second power storage element by connecting a power source, and charging one of a third power storage element and a fourth power storage element by connecting the power source, wherein the one of the first power storage element and the second power storage element and the one of the third power storage element and the fourth power storage element connect in parallel, while discharging the other one of the first power storage element and the second power storage element, and discharging the other one of the third power storage element and the fourth power storage element, wherein the other one of the first power storage element and the second power storage element and the other one of the third power storage element and the fourth power storage element connect in series;
- and
- discharging the first power storage element, the second power storage element, the third power storage element, and the fourth power storage element by connecting a load, wherein the first power storage element and the second power storage element connect in parallel, wherein the third power storage element and the fourth power storage element connect in parallel, wherein the first power storage element connects to each of the third power storage element and the fourth power storage element in series, and wherein the second power storage element connects to each of the third power storage element and the fourth power storage element in parallel, thereby supplying a current to the load.
A method for controlling an electric power, the method comprising the steps of:
- charging one of a first power storage element and a second power storage element by connecting a power source, and charging one of a third power storage element and a fourth power storage element by connecting the power source, wherein the one of the first power storage element and the second power storage element and the one of the third power storage element and the fourth power storage element connect in parallel, while discharging the other one of the first power storage element and the second power storage element, and discharging the other one of the third power storage element and the fourth power storage element, wherein the other one of the first power storage element and the second power storage element and the other one of the third power storage element and the fourth power storage element connect in series.
Dependencies are inferred from the claim text.