Power storage device, power storage control device, and power storage control method
First Claim
1. A power storage device, comprising:
- a plurality of cells connected in series, wherein each cell of the plurality of cells is a battery cell which charges with a charge current and discharges a discharge current;
a plurality of reactance elements connected in series;
a plurality of connection lines configured to connect respective cells of the plurality of cells and respective reactance elements of the plurality of reactance elements in parallel in a one-to-one correspondence;
a plurality of switching elements configured to independently open or close each of the plurality of connection lines; and
a power storage control device configured to;
control the plurality of switching elements to transfer energy between the plurality of cells;
close a first pair of connection lines of the plurality of connection lines,wherein the first pair of connection lines are at ends of a series of cells, and the series of cells is among the plurality of cells,open, subsequent to the close of the first pair of connection lines, the first pair of connection lines, andclose, subsequent to the open of the first pair of connection lines, a second pair of connection lines of the plurality of connection lines,wherein the second pair of connection lines are at ends of a target cell, and the target cell is among the series of cells.
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0 Petitions
Accused Products
Abstract
There is provided a power storage device, a power storage control device, and a power storage control method for rapidly equalizing voltages of cells with a simple configuration. A power storage device including a plurality of cells which are connected in series; a plurality of reactance elements which are connected in series; a plurality of connection lines configured to connect the respective cells and the respective reactance elements in parallel in a one-to-one correspondence; a plurality of switching elements configured to independently open and close each of the connection lines; and a power storage control device configured to control the switching elements to cause energy to be transferred between the cells.
14 Citations
13 Claims
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1. A power storage device, comprising:
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a plurality of cells connected in series, wherein each cell of the plurality of cells is a battery cell which charges with a charge current and discharges a discharge current; a plurality of reactance elements connected in series; a plurality of connection lines configured to connect respective cells of the plurality of cells and respective reactance elements of the plurality of reactance elements in parallel in a one-to-one correspondence; a plurality of switching elements configured to independently open or close each of the plurality of connection lines; and a power storage control device configured to; control the plurality of switching elements to transfer energy between the plurality of cells; close a first pair of connection lines of the plurality of connection lines, wherein the first pair of connection lines are at ends of a series of cells, and the series of cells is among the plurality of cells, open, subsequent to the close of the first pair of connection lines, the first pair of connection lines, and close, subsequent to the open of the first pair of connection lines, a second pair of connection lines of the plurality of connection lines, wherein the second pair of connection lines are at ends of a target cell, and the target cell is among the series of cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A power storage control device, comprising:
a circuitry configured to; control a plurality of switching elements to independently open or close a plurality of connection lines, wherein the plurality of connection lines connect a plurality of cells and a plurality of reactance elements in parallel in a one-to-one correspondence, wherein the plurality of cells are connected in series, wherein the plurality of reactance elements are connected in series, and wherein each cell of the plurality of cells is a battery cell which charges with a charge current and discharges with a discharge current; transfer energy between the plurality of cells based on the control of the plurality of switching elements; close a first pair of connection lines of the plurality of connection lines, wherein the first pair of connection lines are at ends of a series of cells, and the series of cells is among the plurality of cells; open, subsequent to the close of the first pair of connection lines, the first pair of connection lines; and close, subsequent to the open of the first pair of connection lines, a second pair of connection lines of the plurality of connection lines, wherein the second pair of connection lines are at ends of a target cell, and the target cell is among the series of cells.
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13. A power storage control method, comprising:
in a control device; controlling a plurality of switching elements to independently open or close a plurality of connection lines, wherein the plurality of connection lines connect a plurality of cells and a plurality of reactance elements in parallel in a one-to-one correspondence, wherein the plurality of cells are connected in series, wherein the plurality of reactance elements are connected in series, and wherein each cell of the plurality of cells is a battery cell which charges with a charge current and discharges with a discharge current; transferring energy between the plurality of cells based on the controlling of the plurality of switching elements; closing a first pair of connection lines of the plurality of connection lines, wherein the first pair of connection lines are at ends of a series of cells, and the series of cells is among the plurality of cells; opening, subsequent to the closing of the first pair of connection lines, the first pair of connection lines; and closing, subsequent to the opening of the first pair of connection lines, a second pair of connection lines of the plurality of connection lines, wherein the second pair of connection lines are at ends of a target cell, and the target cell is among the series of cells.
Specification