Power storage system and power storage systems control method
First Claim
Patent Images
1. A power storage system comprising:
- a power storage unit which includes one or more batteries;
a signal receiver which externally receives a signal;
a charge controller which converts AC power supplied from a power system into DC power, and supplies the DC power to the one or more batteries to charge the one or more batteries; and
a switching controller which switches between a first mode and a second mode according to the signal received by the signal receiver, the first mode being a mode in which the AC power supplied from the power system is supplied to a load and the second mode being a mode in which electric power is supplied to the load by using electric power charged in the one or more batteries,wherein the signal received by the signal receiver is a power saving request signal, andthe switching controller switches from the first mode to the second mode when the signal receiver receives the power saving request signal.
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Abstract
A distribution board includes: a pack housing unit which houses a battery pack and includes a connecting unit; and a charge control unit. The battery pack includes a connecting terminal unit for charge and discharge of power and can supply power to the distribution board and another device different from the distribution board. The connecting unit is connectable to and disconnectable from the connecting terminal unit. The charge control unit converts AC power supplied from a power system into DC power, and supplies the DC power to the battery pack housed in the pack housing unit to charge the battery pack.
21 Citations
17 Claims
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1. A power storage system comprising:
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a power storage unit which includes one or more batteries; a signal receiver which externally receives a signal; a charge controller which converts AC power supplied from a power system into DC power, and supplies the DC power to the one or more batteries to charge the one or more batteries; and a switching controller which switches between a first mode and a second mode according to the signal received by the signal receiver, the first mode being a mode in which the AC power supplied from the power system is supplied to a load and the second mode being a mode in which electric power is supplied to the load by using electric power charged in the one or more batteries, wherein the signal received by the signal receiver is a power saving request signal, and the switching controller switches from the first mode to the second mode when the signal receiver receives the power saving request signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power storage system control method comprising:
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externally obtaining a signal; converting AC power supplied from a power system into DC power, and supplying the DC power to a battery to charge the battery; and switching between a first mode and a second mode according to the signal obtained in the obtaining, the first mode being a mode in which the AC power supplied from the power system is supplied to a load and the second mode being a mode in which electric power is supplied to the load by using electric power charged in the battery, wherein the signal obtained is a power saving request signal, and in the switching, the first mode is switched to the second mode when the power saving request signal is obtained.
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12. A power storage system comprising:
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a power storage unit which includes one or more batteries; a signal receiver which externally receives a signal; a charge controller which converts AC power supplied from a power system into DC power, and supplies the DC power to the one or more batteries to charge the one or more batteries; and a switching controller which switches between a first mode and a second mode according to the signal received by the signal receiver, the first mode being a mode in which the AC power supplied from the power system is supplied to a load, the second mode being a mode in which electric power is supplied to the load by using electric power charged in the one or more batteries, wherein each of the one or more batteries is a battery pack, and the power storage system further comprises; a connecting unit connectable to and disconnectable from a connecting terminal unit of the battery pack; and a pack housing which houses the battery pack and includes the connecting unit.
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13. A power storage system control method for a power storage system, the power storage system including a power storage unit which includes one or more batteries, the method comprising:
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receiving externally, using a signal receiver, a signal; using a charge controller, converting AC power supplied from a power system into DC power and supplying the DC power to the one or more batteries to charge the one or more batteries; and switching, using a switching controller, between a first mode and a second mode according to the signal received by the signal receiver, the first mode being a mode in which the AC power supplied from the power system is supplied to a load and the second mode being a mode in which electric power is supplied to the load by using electric power charged in the one or more batteries, wherein each of the one or more batteries is a battery pack, and the method further comprising; connecting the power storage system to and disconnecting the power storage system from a connecting terminal unit of the battery pack using a connecting unit; and housing the battery pack and the connecting unit in a pack housing.
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14. A distribution board comprising:
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a power line for supplying, to a load, AC power that is supplied from a power system; a pack housing which houses a battery pack and includes a connecting unit, the battery pack including a connecting terminal unit for charge and discharge, the connecting unit being connectable to and disconnectable from the connecting terminal unit of the battery pack; and an AC/DC converter which converts the AC power supplied from the power system into DC power, and supplies the DC power to the battery pack housed in the pack housing to charge the battery pack, wherein the load comprises a plurality of loads including a normal load and an emergency load, the distribution board further comprises; a DC/AC inverter which converts, into AC power, the DC power discharged from the battery pack via the connecting unit, and supplies the AC power to the load; and a switching controller which switches between a grid connection mode and a self-sustained operation mode, the grid connection mode being a mode in which the AC power supplied from the power system is supplied to at least the normal load, the self-sustained operation mode being a mode in which electric power discharged from the battery pack is supplied to at least the emergency load via the DC/AC inverter, the distribution board further comprises; a receiver which externally receives a control signal, wherein the switching controller switches between the grid connection mode and the self-sustained operation mode according to the control signal received by the receiver.
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15. A distribution board comprising:
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a power line for supplying, to a load, AC power that is supplied from a power system; a pack housing which houses a battery pack and includes a connecting unit, the battery pack including a connecting terminal unit for charge and discharge, the connecting unit being connectable to and disconnectable from the connecting terminal unit of the battery pack; and an AC/DC converter which converts the AC power supplied from the power system into DC power, and supplies the DC power to the battery pack housed in the pack housing to charge the battery pack, wherein the load comprises a plurality of loads including a normal load and an emergency load, the distribution board further comprises; a DC/AC inverter which converts, into AC power, the DC power discharged from the battery pack via the connecting unit, and supplies the AC power to the load; and a switching controller which switches between a grid connection mode and a self-sustained operation mode, the grid connection mode being a mode in which the AC power supplied from the power system is supplied to at least the normal load, the self-sustained operation mode being a mode in which electric power discharged from the battery pack is supplied to at least the emergency load via the DC/AC inverter, the distribution board further comprises; a charge controller which controls charge of the battery pack, wherein the charge controller obtains information about a remaining power level of the battery pack by communicating with the battery pack, and when the remaining power level is below a predetermined threshold value in the grid connection mode, the charge controller charges the battery pack by supplying, to the battery pack, the electric power supplied from the power system, and when the remaining power level is above or equal to the predetermined threshold value, the charge controller stops supplying, to the battery pack, the electric power supplied from the power system.
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16. A method for a distribution board comprising:
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supplying to a load, using a power line, AC power that is supplied from a power system; housing, using a pack housing that includes a connecting unit, a battery pack, the battery pack including a connecting terminal unit for charge and discharge, the connecting unit being connectable to and disconnectable from the connecting unit of the battery pack; and converting, using an AC/DC converter, the AC power supplied from the power system into DC power, and supplying the DC power to the battery pack housed in the pack housing to charge the battery pack, wherein the load comprises a plurality of loads including a normal load and an emergency load, the method further comprising; converting using a DC/AC inverter, into AC power, the DC power discharged from the battery pack via the connecting unit, and supplying the AC power to the load; and switching, using a switching controller, between a grid connection mode and a self-sustained operation mode, the grid connection mode being a mode in which the AC power supplied from the power system is supplied to at least the normal load, and the self-sustained operation mode being a mode in which electric power discharged from the battery pack is supplied to at least the emergency load via the DC/AC inverter, and the method also further comprising; externally receiving, using a receiver, a control signal, and wherein the switching controller switches between the grid connection mode and the self-sustained operation mode according to the control signal received by the receiver.
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17. A method for a distribution board comprising:
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supplying to a load, using a power line, AC power that is supplied from a power system; housing, using a pack housing that includes a connecting unit, a battery pack, the battery pack including a connecting terminal unit for charge and discharge, the connecting unit being connectable to and disconnectable from the connecting terminal unit of the battery pack; and converting, using an AC/DC converter, the AC power supplied from the power system into DC power, and supplying the DC power to the battery pack housed in the pack housing to charge the battery pack, wherein the load comprises a plurality of loads including a normal load and an emergency load, the method further comprising; converting using a DC/AC inverter, into AC power, the DC power discharged from the battery pack via the connecting unit, and supplying the AC power to the load; and switching, using a switching controller, between a grid connection mode and a self-sustained operation mode, the grid connection mode being a mode in which the AC power supplied from the power system is supplied to at least the normal load, and the self-sustained operation mode being a mode in which electric power discharged from the battery pack is supplied to at least the emergency load via the DC/AC inverter, and the method further comprising; controlling, using a charge controller which, charge of the battery pack, wherein the charge controller obtains information about a remaining power level of the battery pack by communicating with the battery pack, and when the remaining power level is below a predetermined threshold value in the grid connection mode, the charge controller charges the battery pack by supplying, to the battery pack, the electric power supplied from the power system, and when the remaining power level is above or equal to the predetermined threshold value, the charge controller stops supplying, to the battery pack, the electric power supplied from the power system.
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Specification