Power supply management system and power supply management method

Abstract

To obtain a power supply management system and a power supply management method that can extend the time during which power is supplied by an external power source when the grid power supply is interrupted. [Solution] In the power supply management system, outlet switches 7 are individually provided for multiple power supply management outlets 51. Server 8 receives the detection result of the charger / discharger 3, which detects whether the grid power supply 2 is energized or de-energized, as grid power status information. When the grid power status information indicates that the grid power supply 2 is de-energized, control device 9 receives power outage switch information B from server 8 as switch control information. Power outage switch information B is information that sets the first switch 7a of each outlet switch 7 to the ON state and the second switch 7b to the OFF state. Based on the switch control information, control device 9 controls each outlet switch 7 individually.

Description

Technical Field

[0001] The present disclosure relates to a power supply management system and a power supply management method.

Background Art

[0002] Patent Document 1 discloses a home energy management system that determines the presence or absence of a resident based on the schedule of the resident input on the schedule input screen of the display unit, and charges the power generated by the solar power generation device into the storage battery on the day of return home or the day before. The power stored in the storage battery can be used in the house. Thereby, economical use of electric energy is achieved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the home energy management system disclosed in Patent Document 1, when a power outage of the grid power supply from the power company occurs while the resident is at home, the power stored in the storage battery is supplied to various devices in the house. In this case, since power is supplied from the storage battery to all the devices connected to the storage battery, the amount of power supplied from the storage battery to the house increases, and the power supply time from the storage battery to the house is shortened.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain a power supply management system and a power supply management method capable of extending the power supply time by an external power source during a power outage of the grid power supply.

Means for Solving the Problems

[0006] The power supply management system described herein is provided individually for multiple power supply management outlets installed in a building. It includes multiple outlet switches that, when turned ON, connect the power supply management outlet to the wiring section and when turned OFF, disconnect the power supply management outlet from the wiring section. It also includes a server that receives the detection results of the charger / discharger, which detects whether the power supply is energized or unpowered, as power supply status information, and stores the powered-on switch information and the unpowered-out switch information. When the power supply status information indicates that the power supply is energized, the powered-on switch information is received from the server as switch control information. The system includes a control device that receives system power status information and, when the system power status information indicates a power outage, receives power outage switch information from the server as switch control information, and controls each outlet switch individually based on the switch control information. The charger / discharger is connected to the wiring section by a switch, so that power from an external power source connected to the charger / discharger can be supplied to the wiring section. The power-on switch information is information that turns each outlet switch ON, and the power outage switch information is information that turns some of the outlet switches, namely the power outage connection switches, ON, and turns off the power outage cutoff switches, namely the outlet switches other than the power outage connection switches. Furthermore, the power supply management method relating to this disclosure includes a system power detection step in which the charger / discharger detects whether the system power is energized or de-energized, among the system power supply and charger / discharger selectively connected to the wiring section by a switch; a control information step in which the control device receives the energized switch information as switch control information from the server when the system power status information, which is the detection result of the charger / discharger, indicates that the system power is energized, and when the system power status information indicates that the system power is de-energized, the control device receives the de-energized switch information as switch control information from the server; and a control information step in which the control device receives the de-energized switch information as switch control information from the server when the system power status information indicates that the system power is de-energized, among the energized switch information and de-energized switch information stored in the server; and a plurality of outlet switches individually provided for a plurality of power supply management outlets provided in the building. The system includes a switch control step in which the switches are individually controlled by a control device based on switch control information. The charger / discharger is connected to the wiring section by a switch, thereby enabling the supply of power from an external power source connected to the charger / discharger to the wiring section. Each outlet switch connects the power supply management outlet to the wiring section when it is in the ON state and disconnects the power supply management outlet from the wiring section when it is in the OFF state. The power supply switch information is information that sets each outlet switch to the ON state, and the power outage switch information is information that sets some of the outlet switches, namely the power outage connection switches, to the ON state, and sets the outlet switches other than the power outage connection switches, namely the power outage cutoff switches, to the OFF state. [Effects of the Invention]

[0007] According to this disclosure, it is possible to extend the duration of power supply by an external power source during a power outage in the grid. [Brief explanation of the drawing]

[0008] [Figure 1] This is an explanatory diagram showing the power supply management system according to Embodiment 1 being applied to the building's electrical system. [Figure 2] Figure 1 is an explanatory diagram showing the power supply status table when the power supply status information received by the server is power-on detection information. [Figure 3]Figure 1 is an explanatory diagram showing the system power status table when the system power status information received by the server is power outage detection information. [Figure 4] Figure 1 is an explanatory diagram showing the switch configuration table stored on the server. [Figure 5] Figure 1 is a flowchart showing the power supply management method using the power supply management system. [Figure 6] Figure 1 is an explanatory diagram showing a power supply management system when the grid power supply is energized. [Figure 7] Figure 1 is an explanatory diagram showing the power supply management system after the power grid has failed and the determination unit has transmitted power outage switch information to the switch control unit. [Figure 8] Figure 7 is an explanatory diagram showing a power supply management system when the charger / discharger is connected to the wiring section by a switch. [Figure 9] This is a configuration diagram showing a first example of a processing circuit that realizes the functions of the server, switch control unit, and determination unit according to Embodiment 1. [Figure 10] This is a configuration diagram showing a second example of a processing circuit that realizes the functions of the server, switch control unit, and determination unit according to Embodiment 1. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. Embodiment 1. Figure 1 is an explanatory diagram showing the power supply management system according to Embodiment 1 applied to the building's electrical system. Figure 1 shows the electrical system of one dwelling unit in an apartment building as an example of the building's electrical system. In the figure, a switch 1 is installed in the dwelling unit. The switch 1 is connected to the grid power supply 2 and the charger / discharger 3.

[0010] When power is supplied to the grid power source 2, it supplies power from the power company to the switch 1. In this embodiment, 100V AC power is supplied from the grid power source 2 to the switch 1. If the grid power source 2 experiences a power outage, the supply of power from the grid power source 2 to the switch 1 stops.

[0011] The battery installed in the EV (Electric Vehicle) 4 is connected to the charger / discharger 3 as an external power source. The charger / discharger 3 is capable of discharge operations. When a discharge operation is performed on the charger / discharger 3, it operates as a V2H (Vehicle to Home) device. The discharge operation is the operation of supplying power stored in the EV 4's battery from the charger / discharger 3 to the switch 1. In this embodiment, the charger / discharger 3 converts the DC power of the EV 4's battery into 100V AC power, and the 100V AC power is supplied from the charger / discharger 3 to the switch 1. The discharge operation on the charger / discharger 3 is performed manually by the residents of the dwelling unit or the like.

[0012] Each dwelling unit is provided with multiple power supply management outlets 51 and multiple general outlets 52, which together constitute multiple outlets 5. Each power supply management outlet 51 is an outlet managed by the power supply management system according to this embodiment.

[0013] In Figure 1, of the three outlets 5, two outlets 5 are shown as power supply management outlets 51, and one outlet 5 is shown as a general outlet 52. In addition, Figure 1 shows the first outlet 51a and the second outlet 51b as power supply management outlets 51.

[0014] Each dwelling unit is equipped with a wiring section 6 for supplying power to each outlet 5. The wiring section 6 includes multiple wires. The wiring section 6 is connected to a switch 1.

[0015] The switch 1 can be switched. The switch 1 selectively connects the utility power supply 2 and the charger / discharger 3 to the wiring section 6 according to the switching operation on the switch 1. The switching operation on the switch 1 is manually performed by the resident of the household or the like.

[0016] When the utility power supply 2 is connected to the wiring section 6 by the switch 1, the charger / discharger 3 is disconnected from the wiring section 6 by the switch 1. In the state where the utility power supply 2 is connected to the wiring section 6 by the switch 1, when the utility power supply 2 is in an energized state, the utility power supply 2 supplies the power from the power company to the wiring section 6. That is, the utility power supply 2 can supply the power from the power company to the wiring section 6 by being connected to the wiring section 6 by the switch 1.

[0017] When the utility power supply 2 is in a power outage state due to some cause, the switching operation on the switch 1 is performed by the resident or the like. As a result, the switch 1 disconnects the utility power supply 2 from the wiring section 6 and connects the charger / discharger 3 to the wiring section 6. In the state where the charger / discharger 3 is connected to the wiring section 6, when a discharging operation on the charger / discharger 3 is performed, the charger / discharger 3 performs a discharging operation. The charger / discharger 3 supplies the power stored in the battery of the EV4 to the wiring section 6 by performing the discharging operation. That is, the charger / discharger 3 can supply the power of the battery of the EV4 connected to the charger / discharger 3 to the wiring section 6 by being connected to the wiring section 6 by the switch 1.

[0018] Therefore, the utility power supply 2 and the charger / discharger 3 can supply power to the wiring section 6 by being selectively connected to the wiring section 6 by the switch 1.

[0019] A distribution board 61 is provided in the wiring section 6. The distribution board 61 distributes power to each outlet 5. The wiring section 6 sends the power from the switch 1 to the distribution board 61 and sends the power distributed in the distribution board 61 to each outlet 5. When power is supplied to the wiring section 6, the wiring section 6 is in an energized state. When the supply of power to the wiring section 6 stops, the wiring section 6 is in a power outage state.

[0020] The power supply management system manages the supply of power to each power supply management outlet 51. The power supply management system includes multiple outlet switches 7, a server 8, and a control device 9.

[0021] Each outlet switch 7 is individually provided for each power supply management outlet 51. The state of each outlet switch 7 can be switched between an ON state and an OFF state. When each outlet switch 7 is in the ON state, it connects the corresponding power supply management outlet 51 to the wiring section 6. When each outlet switch 7 is in the OFF state, it disconnects the corresponding power supply management outlet 51 from the wiring section 6.

[0022] Figure 1 shows a set of outlet switches 7, including a first switch 7a and a second switch 7b. The first switch 7a is installed on the first outlet 51a. The second switch 7b is installed on the second outlet 51b.

[0023] Each outlet switch 7 has a contact portion 71 and a coil portion 72. When power is supplied to the coil portion 72, the coil portion 72 generates an electromagnetic force that opens the contact portion 71. The contact portion 71 closes when the power supply to the coil portion 72 is stopped, and opens when power is supplied to the coil portion 72. Each outlet switch 7 is in the ON state when the contact portion 71 is closed, and in the OFF state when the contact portion 71 is open.

[0024] When the wiring unit 6 is energized, the outlet switch 7 is turned ON, supplying power from the wiring unit 6 to the corresponding power supply management outlet 51. Conversely, when the wiring unit 6 is energized, the outlet switch 7 is turned OFF, stopping the supply of power from the wiring unit 6 to the corresponding power supply management outlet 51.

[0025] The outlet switch 7 is not provided for the standard outlet 52. Therefore, the wiring unit 6 is directly connected to the standard outlet 52 without going through the outlet switch 7. As a result, when the wiring unit 6 is energized, power is constantly supplied from the wiring unit 6 to the standard outlet 52. When the wiring unit 6 experiences a power outage, the power supply from the wiring unit 6 to the standard outlet 52 stops.

[0026] Multiple electrical outlets 5 are individually connected to multiple home appliances 10, including a refrigerator 10a, a television 10b, and a kitchen lighting fixture 10c. Of the multiple home appliances 10, some are designated as priority appliances. The refrigerator 10a and the kitchen lighting fixture 10c are designated as priority appliances. In addition, of the multiple home appliances 10, those that are not designated as priority appliances are designated as normal appliances. The television 10b is a normal appliance. The priority for supplying power to home appliances 10 is higher for priority appliances than for normal appliances.

[0027] In the example shown in Figure 1, a refrigerator 10a is connected to the first outlet 51a, and a television 10b is connected to the second outlet 51b. Also in the example shown in Figure 1, a kitchen light fixture 10c is connected to the general outlet 52.

[0028] In the server 8, some of the multiple outlet switches 7 are configured as power outage connection switches, while the other outlet switches 7 are configured as power outage cutoff switches. The power outage connection switches are the outlet switches 7 located on the power supply management outlets 51 to which priority appliances are connected. The power outage cutoff switches are the outlet switches 7 located on the power supply management outlets 51 to which normal appliances are connected. Therefore, in this embodiment, the first switch 7a located on the first outlet 51a is configured on the server 8 as a power outage connection switch, and the second switch 7b located on the second outlet 51b is configured on the server 8 as a power outage cutoff switch.

[0029] Server 8 is capable of communicating with the charger / discharger 3. In this embodiment, Server 8 is capable of communicating with the charger / discharger 3 wirelessly. In this embodiment, Server 8 is located on the cloud.

[0030] The charger / discharger 3 can detect whether the power grid 2 is energized or de-energized. When the charger / discharger 3 detects that the power grid 2 is energized, it outputs energized detection information, which is the detection result indicating the energized state of the power grid 2, to the server 8. Also, when the charger / discharger 3 detects that the power grid 2 is de-energized, it outputs de-energized detection information, which is the detection result indicating the de-energized state of the power grid 2, to the server 8.

[0031] Server 8 receives the detection results from the charger / discharger 3 as system power status information. Therefore, when the detection result from the charger / discharger 3 indicates that the system power supply 2 is energized, Server 8 receives the energization detection information from the charger / discharger 3 as system power status information. Also, when the detection result from the charger / discharger 3 indicates that the system power supply 2 is out of service, Server 8 receives the outage detection information from the charger / discharger 3 as system power status information.

[0032] Server 8 stores a system power status table. Server 8 records the system power status information received from the charger / discharger 3 in the system power status table.

[0033] Here, Figure 2 is an explanatory diagram showing the system power status table when the system power status information received by server 8 in Figure 1 is power-on detection information. Figure 3 is an explanatory diagram showing the system power status table when the system power status information received by server 8 in Figure 1 is power-out detection information. When the system power status information recorded in the system power status table is power-on detection information, the status of system power 2 shown in the system power status table becomes "powered" as shown in Figure 2. When the system power status information recorded in the system power status table is power-out detection information, the status of system power 2 shown in the system power status table becomes "power out" as shown in Figure 3.

[0034] Additionally, server 8 stores a switch configuration table. In this table, the state of each outlet switch 7 is set to correspond to the state of the power system 2.

[0035] Figure 4 is an explanatory diagram showing the switch setting table stored in server 8 in Figure 1. The switch setting table contains switch information A for when power is on and switch information B for when power is off. Therefore, server 8 stores switch information A for when power is on and switch information B for when power is off as the switch setting table.

[0036] The power-on switch information A is set in the switch setting table corresponding to the power supply status of the power system 2. The power-on switch information A is information that sets each outlet switch 7, namely the first switch 7a and the second switch 7b, to the ON state.

[0037] The power outage switch information B is set in the switch setting table corresponding to the power outage state of system power supply 2. The power outage switch information B is information that sets the first switch 7a, which acts as a power outage connection switch, to the ON state, and the second switch 7b, which acts as a power outage disconnection switch, to the OFF state.

[0038] As shown in Figure 1, the control device 9 includes a power supply circuit 91, a switch control unit 92, a detection unit 93, a determination unit 94, and an AC / DC converter 95. In this embodiment, the control device 9 is installed in a dwelling unit.

[0039] The power supply circuit 91 includes a control power supply 911 and a control power supply switch 912. The control power supply 911 is a power source independent of the grid power supply 2. A battery or the like is used as the control power supply 911.

[0040] The control power supply switch 912 is connected to the wiring section 6. The control power supply switch 912 has a contact section 912a and a coil section 912b. The coil section 912b is connected to the wiring section 6.

[0041] In the control power supply switch 912, power is supplied from the wiring section 6 to the coil section 912b when the wiring section 6 is energized. The coil section 912b generates an electromagnetic force that opens the contact section 912a when power is supplied to it. The contact section 912a closes when the power supply to the coil section 912b is stopped, and opens when power is supplied to the coil section 912b. The control power supply switch 912 becomes ON when the contact section 912a is closed, and OFF when the contact section 912a is open.

[0042] The switch control unit 92 and the detection unit 93 are connected to the power supply circuit 91. The switch control unit 92 is connected to the wiring unit 6 via the AC / DC converter 95. Therefore, the switch control unit 92 is connected to both the power supply circuit 91 and the wiring unit 6.

[0043] When the wiring section 6 is in a power outage state, the control power supply switch 912 turns ON, supplying power from the control power supply 911 to the switch control unit 92 and the detection unit 93, respectively. In other words, the power supply circuit 91 supplies power to the switch control unit 92 and the detection unit 93, respectively, when the wiring section 6 is in a power outage state. In this embodiment, the power supplied from the control power supply 911 to the switch control unit 92 and the detection unit 93 is DC power.

[0044] When the wiring section 6 is energized, the control power supply switch 912 is turned OFF, which stops the supply of power from the control power supply 911 to the switch control section 92 and the detection section 93, respectively. In other words, the power supply circuit 91 stops supplying power to the switch control section 92 and the detection section 93, respectively, when the wiring section 6 is energized.

[0045] On the other hand, when the wiring unit 6 is energized, power is supplied from the wiring unit 6 to the switch control unit 92 via the AC / DC converter 95. The AC / DC converter 95 is a power converter that converts power between direct current and alternating current. As a result, when the wiring unit 6 is energized, the alternating current power from the wiring unit 6 is converted to direct current power by the AC / DC converter 95, and the converted direct current power is supplied to the switch control unit 92.

[0046] The switch control unit 92 controls each outlet switch 7. The control of each outlet switch 7 by the switch control unit 92 is made possible by the supply of power to the switch control unit 92. Therefore, the control of each outlet switch 7 by the switch control unit 92 is possible whether the wiring unit 6 is in a power-off state or a power-on state.

[0047] The determination unit 94 is connected to the detection unit 93. The detection unit 93 detects when the wiring unit 6 is in a power outage state by supplying power from the control power supply 911 to the detection unit 93. The detection unit 93 also drives the determination unit 94 by supplying power from the control power supply 911 to the detection unit 93. Therefore, the determination unit 94 is driven by the detection unit 93 when the wiring unit 6 is in a power outage state.

[0048] The determination unit 94 is driven by the detection unit 93, enabling it to communicate with the server 8. In this embodiment, the determination unit 94 can communicate with the server 8 wirelessly.

[0049] The determination unit 94 receives the system power status information from the server 8 by retrieving the system power status information recorded in the system power status table through communication with the server 8. The determination unit 94 also retrieves the information corresponding to the system power status information from the power-on switch information A and power-out switch information B set in the switch setting table based on the system power status information received from the server 8, and receives the retrieved information from the server 8 as switch control information.

[0050] Therefore, when the system power status information is power-on detection information indicating the power-on state of system power 2, the determination unit 94 receives power-on switch information A as switch control information from the server 8. Also, when the system power status information is power-out detection information indicating a power-out state of system power 2, the determination unit 94 receives power-out switch information B as switch control information from the server 8.

[0051] The determination unit 94 is connected to the switch control unit 92 via a communication line. Driven by the detection unit 93, the determination unit 94 transmits the switch control information received from the server 8 to the switch control unit 92 via the communication line.

[0052] The switch control unit 92 controls each outlet switch 7 individually based on the switch control information, depending on the power supply to the switch control unit 92. Therefore, when the system power status information is power supply detection information, the switch control unit 92 controls each outlet switch 7 to the ON state based on the power supply switch information A, which is the switch control information. Also, when the system power status information is power outage detection information, the switch control unit 92 controls the first switch 7a to the ON state and the second switch 7b to the OFF state based on the power outage switch information B, which is the switch control information. The switch control unit 92 is a power outage retention circuit that maintains the control settings of each outlet switch 7 even if the power supply to the switch control unit 92 is stopped.

[0053] The switch control unit 92 is provided with a plurality of output ports 921, including a first output port 921a, a second output port 921b, a third output port 921c, and a fourth output port 921d. The coil portion 72 of the first switch 7a is connected to the first output port 921a. The coil portion 72 of the second switch 7b is connected to the second output port 921b. Nothing is connected to the third output port 921c and the fourth output port 921d.

[0054] The switch control unit 92 turns the outlet switch 7 OFF by supplying power to the outlet switch 7 from the output port 921. The switch control unit 92 also turns the outlet switch 7 ON by stopping the power supply from the output port 921 to the outlet switch 7.

[0055] When the switch control information is powered-on switch information A, the switch control unit 92 controls the supply of power from the first output port 921a to the first switch 7a and from the second output port 921b to the second switch 7b, respectively. As a result, when the grid power supply 2 is powered on and power is supplied from the grid power supply 2 to the wiring unit 6, the wiring unit 6 is powered on, and power is supplied from the wiring unit 6 to the first outlet 51a and the second outlet 51b, respectively.

[0056] Furthermore, when the switch control information is power outage switch information B, the switch control unit 92 stops supplying power from the first output port 921a to the first switch 7a and supplies power from the second output port 921b to the second switch 7b. As a result, when power is supplied from the charger / discharger 3 to the wiring unit 6 during a power outage of the grid power supply 2 and the wiring unit 6 is energized, power is supplied from the wiring unit 6 to the first outlet 51a, and the power supply from the wiring unit 6 to the second outlet 51b is stopped.

[0057] In this way, the power supply management system controls the supply of power to each power supply management outlet 51 by controlling each outlet switch 7 according to the state of power supply and power outage of the grid power supply 2.

[0058] Next, a power supply management method for managing the supply of power to each power supply management outlet 51 will be described. Figure 5 is a flowchart showing the power supply management method using the power supply management system of Figure 1. The power supply management method includes a grid power detection step S1, a control information step S2, and a switch control step S3. In the power supply management method, each step is performed in the order of grid power detection step S1, control information step S2, and switch control step S3.

[0059] <System power detection step S1> In the system power detection step S1, the charger / discharger 3 detects whether the system power supply 2 is energized or de-energized. When the detection result of the charger / discharger 3 indicates that the system power supply 2 is energized, the energized detection information is transmitted from the charger / discharger 3 to the server 8. When the detection result of the charger / discharger 3 indicates that the system power supply 2 is de-energized, the de-energized detection information is transmitted from the charger / discharger 3 to the server 8. The server 8 receives the detection result of the charger / discharger 3 as system power status information.

[0060] The system power status information received by server 8 is recorded in the system power status table stored on server 8. Therefore, in the system power detection step S1, if the system power status information received by server 8 is power-on detection information, the power-on detection information is recorded in the system power status table, as shown in Figure 2. Also, in the system power detection step S1, if the system power status information received by server 8 is power-outage detection information, the power-outage detection information is recorded in the system power status table, as shown in Figure 3.

[0061] <Control Information Step S2> Next, control information step S2 is performed. In control information step S2, the determination unit 94 of the control device 9 receives from the server 8, as switch control information, the information corresponding to the system power status information recorded in the system power status table, from among the power-on switch information A and power-out switch information B stored in the server 8.

[0062] In the control information step S2, the determination unit 94 receives system power status information from the server 8, and then communicates with the server 8 based on the system power status information received from the server 8. As a result, in the control information step S2, the determination unit 94 receives from the server 8 the information corresponding to the system power status information from the power-on switch information A and power-out switch information B in the switch setting table stored in the server 8, as switch control information.

[0063] As a result, in control information step S2, if the system power status information is power-on detection information indicating the power-on state of system power 2, the determination unit 94 receives power-on switch information A as switch control information. Also, in control information step S2, if the system power status information is power-out detection information indicating a power-out state of system power 2, the determination unit 94 receives power-out switch information B as switch control information. When the determination unit 94 receives switch control information from server 8, it transmits the switch control information to switch control unit 92.

[0064] <Switch control step S3> Next, the switch control step S3 is performed. In the switch control step S3, the switch control unit 92 individually controls each outlet switch 7 based on the switch control information received from the server 8.

[0065] In switch control step S3, when the switch control information is powered-on switch information A, the switch control unit 92 controls each outlet switch 7 to the ON state. Also in switch control step S3, when the switch control information is power-outage switch information B, the switch control unit 92 controls the first switch 7a to the ON state and the second switch 7b to the OFF state.

[0066] As a result, when power is supplied from the power grid 2 to the wiring section 6 and the wiring section 6 is energized, power is supplied to each power supply management outlet 51. On the other hand, when power is supplied from the charger / discharger 3 to the wiring section 6 during a power outage of the power grid 2 and the wiring section 6 is energized, power is supplied to the first outlet 51a and the power supply to the second outlet 51b is stopped. In this way, the power supply to each power supply management outlet 51 is managed.

[0067] Next, the operation of the power supply management system when the grid power supply 2 is energized will be explained. Figure 6 is an explanatory diagram showing the power supply management system when the grid power supply 2 in Figure 1 is energized. When the grid power supply 2 is energized, the grid power supply 2 is connected to the wiring section 6 by the switch 1, and the charger / discharger 3 is disconnected from the wiring section 6 by the switch 1. As a result, power is supplied from the grid power supply 2 to the wiring section 6, and the wiring section 6 becomes energized.

[0068] When the wiring unit 6 is energized, power is supplied from the wiring unit 6 to the control power supply switch 912 in the control device 9, causing the control power supply switch 912 to be in the OFF state. As a result, the determination unit 94 is not driven, and no communication takes place between the determination unit 94 and the server 8. At this time, power is supplied to the switch control unit 92 from the wiring unit 6 via the AC / DC converter 95.

[0069] When the power supply system 2 is energized, the power-on switch information A is recorded in the switch control unit 92 as switch control information. Therefore, when the power supply system 2 is energized, the switch control unit 92 controls each outlet switch 7 to the ON state based on the power-on switch information A.

[0070] As a result, when the power grid 2 is energized, the power supplied from the power grid 2 to the wiring unit 6 is supplied to the first outlet 51a and the second outlet 51b respectively via the outlet switches 7. Also, when the power grid 2 is energized, the power supplied from the power grid 2 to the wiring unit 6 is also supplied to the general outlet 52. As a result, when the power grid 2 is energized, power is supplied from the power grid 2 to the refrigerator 10a, the television 10b, and the kitchen lighting fixture 10c.

[0071] Next, we will explain the operation of the power supply management system immediately after power grid 2 goes from a powered state to a power outage state. The state of the power supply management system immediately after power grid 2 goes into a power outage state is shown in Figure 1. When power grid 2 goes into a power outage state, a detection result indicating the power outage state of power grid 2 is transmitted from the charger / discharger 3 to the server 8 as power outage detection information. As a result, the server 8 receives the power outage detection information as power grid status information and records the power outage detection information in the power grid status table, as shown in Figure 3.

[0072] On the other hand, if the power grid 2 experiences a power outage, the wiring unit 6 also experiences a power outage. As a result, the power supply from the wiring unit 6 to the control power supply switch 912 stops, and the control power supply switch 912 turns ON, as shown in Figure 1. When the control power supply switch 912 turns ON, power is supplied from the control power supply 911 to the detection unit 93, and the determination unit 94 is driven.

[0073] When the determination unit 94 is activated, it communicates with the server 8 and receives power outage detection information recorded in the system power status table on the server 8. Based on the power outage detection information, the determination unit 94 retrieves the power outage switch information B corresponding to the power outage detection information from the switch setting table shown in Figure 4 and receives the retrieved power outage switch information B as switch control information from the server 8. After this, the determination unit 94 transmits the power outage switch information B to the switch control unit 92.

[0074] Next, the operation of the power supply management system after the power grid 2 goes into a power outage state and the determination unit 94 transmits power outage switch information to the switch control unit 92 will be explained. Figure 7 is an explanatory diagram showing the power supply management system after the power grid 2 in Figure 1 goes into a power outage state and the determination unit 94 transmits power outage switch information B to the switch control unit 92. After the power grid 2 goes into a power outage state, the determination unit 94 transmits power outage switch information B to the switch control unit 92, and the switch control unit 92 controls each outlet switch 7 based on the power outage switch information B received from the determination unit 94. As a result, the switch control unit 92 controls the first switch 7a to the ON state and the second switch 7b to the OFF state.

[0075] Next, we will explain the operation of the power supply management system when the charger / discharger 3 is connected to the wiring section 6 by the switch 1 after the grid power supply 2 has failed. Figure 8 is an explanatory diagram showing the power supply management system when the charger / discharger 3 shown in Figure 7 is connected to the wiring section 6 by the switch 1. When the grid power supply 2 has failed, the switch operation for the switch 1 is performed manually by the resident of the dwelling unit. The switch operation for the switch 1 is performed after the switch control unit 92 controls the first switch 51a to the ON state and the second switch 7b to the OFF state. Once the switch operation for the switch 1 is performed, the grid power supply 2 is disconnected from the wiring section 6 and the charger / discharger 3 is connected to the wiring section 6.

[0076] After this, with the EV4's battery connected to the charger / discharger 3, a discharge operation is manually performed on the charger / discharger 3 by a resident of the dwelling. Once the discharge operation is performed on the charger / discharger 3, the charger / discharger 3 starts discharging. As a result, power from the EV4's battery is supplied from the charger / discharger 3 to the wiring unit 6 via the switch 1, and the wiring unit 6 becomes energized.

[0077] When the wiring unit 6 is energized by the power supply from the charger / discharger 3, power is supplied from the wiring unit 6 to the control power supply switch 912, and the control power supply switch 912 turns OFF. As a result, the determination unit 94 stops operating, and communication between the determination unit 94 and the server 8 stops.

[0078] On the other hand, when the wiring section 6 becomes energized due to the power supply from the charger / discharger 3, the power supply source to the switch control unit 92 switches from the control power supply 911 to the wiring section 6. When the power supply source to the switch control unit 92 switches, the power supply to the switch control unit 92 is temporarily stopped.

[0079] At this time, the power outage switch information B recorded as switch control information in the switch control unit 92 is maintained because the switch control unit 92 is a power outage retention circuit. Therefore, even if the power supply to the switch control unit 92 is temporarily interrupted, the state in which the first switch 7a is ON and the second switch 7b is OFF is maintained by the control of the switch control unit 92.

[0080] As a result, when power is supplied from the charger / discharger 3 to the wiring section 6, the power supplied from the charger / discharger 3 to the wiring section 6 is supplied to the first outlet 51a via the first switch 7a, as well as to the general outlet 52. At this time, since the second switch 7b is in the OFF state, even if the wiring section 6 is energized, power is not supplied from the wiring section 6 to the second outlet 51b.

[0081] Therefore, when the wiring section 6 becomes energized due to the power supply from the charger / discharger 3, power is supplied from the charger / discharger 3 to the refrigerator 10a and the kitchen lighting fixture 10c, which are priority appliances. At this time, power is not supplied to the television 10b, which is a normal appliance.

[0082] Next, the operation of the power supply management system will be described when the power supply system 2 is restored from a power outage state to a powered state, and the connection source to the wiring section 6 is switched from the charger / discharger 3 to the power supply system 2 by the switch 1. When the power supply system 2 is restored from a power outage state to a powered state, the detection result indicating the powered state of the power supply system 2 is transmitted from the charger / discharger 3 to the server 8 as powered detection information. The server 8 then receives the powered detection information as power supply status information and records the powered detection information in the power supply status table, as shown in Figure 2.

[0083] On the other hand, when the power grid 2 is restored from a power outage state to a powered state, the discharge operation of the charger / discharger 3 is stopped by the resident of the dwelling unit, and then the switching operation to the switch 1 is manually performed by the resident of the dwelling unit. When the switching operation to the switch 1 is performed, the charger / discharger 3 is disconnected from the wiring unit 6, and the power grid 2 is connected to the wiring unit 6.

[0084] When a switching operation is performed on the switch 1, the connection target of the wiring section 6 switches from the charger / discharger 3 to the grid power supply 2, causing the wiring section 6 to temporarily go from a powered state to a powered state. As a result, the power supply from the wiring section 6 to the control power supply switch 912 is temporarily stopped, and the control power supply switch 912 is temporarily turned ON.

[0085] When the control power supply switch 912 is temporarily turned ON, power is supplied to the switch control unit 92 and the detection unit 93 from the control power supply 911. As a result, the determination unit 94 is temporarily driven to receive power-on detection information recorded in the system power status table on the server 8 from the server 8. Then, based on the power-on detection information received from the server 8, the determination unit 94 receives power-on switch information A corresponding to the power-on detection information as switch control information from the server 8. After this, the determination unit 94 transmits power-on switch information A to the switch control unit 92.

[0086] Subsequently, the switch control unit 92 individually controls each outlet switch 7 based on the power-on switch information A received from the determination unit 94. As a result, the switch control unit 92 controls the first switch 7a and the second switch 7b to the ON state, as shown in Figure 1.

[0087] After this, the switching operation for switch 1 is completed, and power is supplied from the system power supply 2 to the wiring section 6, causing the wiring section 6 to return to a powered state. As a result, the control power supply switch 912 turns OFF, and the operation of the determination unit 94 is stopped.

[0088] At this time, the power supply source to the switch control unit 92 switches from the control power supply 911 to the wiring unit 6, and the power supply to the switch control unit 92 is temporarily stopped. The power-on switch information A recorded in the switch control unit 92 as switch control information is maintained because the switch control unit 92 is a power outage retention circuit. Therefore, even if the power supply to the switch control unit 92 is temporarily stopped, the ON state of the first switch 7a and the second switch 7b is maintained by the control of the switch control unit 92. In this way, when the grid power supply 2 is restored to a powered state, the power supply management system returns to the normal state shown in Figure 5, and power is supplied from the grid power supply 2 to the refrigerator 10a, television 10b, and kitchen lighting fixture 10c.

[0089] In this power supply management system, outlet switches 7 are individually provided for multiple power supply management outlets 51. Server 8 receives the detection results of the charger / discharger 3, which detects whether the grid power supply 2 is energized or de-energized, as grid power status information. When the grid power status information indicates that the grid power supply 2 is energized, control device 9 receives energized switch information A as switch control information from server 8, and when the grid power status information indicates that the grid power supply 2 is de-energized, control device 9 receives de-energized switch information B as switch control information from server 8. Energized switch information A is information that turns each outlet switch 7 to the ON state. De-energized switch information B is information that turns the first switch 7a to the ON state and the second switch 7b to the OFF state among the multiple outlet switches 7. Based on the switch control information, control device 9 individually controls each outlet switch 7.

[0090] Therefore, when the grid power supply 2 experiences a power outage, the first switch 7a can be turned ON and the second switch 7b can be turned OFF. This allows the power supply to the second outlet 51b, which is equipped with the second switch 7b, to be forcibly stopped even when power from the EV4's battery is supplied to the wiring section 6 from the charger / discharger 3 during a power outage of the grid power supply 2. Consequently, the power consumption of the EV4's battery can be limited during a power outage of the grid power supply 2, and the power supply time from the EV4's battery can be extended during a power outage of the grid power supply 2. In addition, by connecting priority appliances, which have a higher power supply priority than ordinary household appliances, to the first outlet 51a equipped with the first switch 7a, it is possible to prevent the problem of priority appliances not receiving power during a power outage of the grid power supply 2.

[0091] Furthermore, the power supply circuit 91 includes a control power supply 911 independent of the grid power supply 2 and a control power supply switch 912 connected to the wiring section 6. When the wiring section 6 is in a power-off state, the control power supply switch 912 is turned ON, supplying power from the control power supply 911 to the switch control unit 92. When the wiring section 6 is energized, power is supplied from the wiring section 6 to the switch control unit 92. Therefore, power can be supplied to the switch control unit 92 not only when the wiring section 6 is energized, but also when the wiring section 6 is in a power-off state. This makes it possible to more reliably control each outlet switch 7 by the switch control unit 92.

[0092] Furthermore, when the wiring unit 6 is in a power-off state, the control power supply switch 912 turns ON, supplying power from the control power supply 911 to the detection unit 93. The determination unit 94, driven by the detection unit 93, receives system power status information from the server 8 and, based on the system power status information, receives switch control information from the server 8. Therefore, while limiting the power consumption of the determination unit 94 when the wiring unit 6 is energized, the determination unit 94 can receive necessary information from the server 8 when the wiring unit 6 is in a power-off state. This makes it possible to extend the operating time of the control power supply 911.

[0093] Furthermore, server 8 is located in the cloud. Therefore, even if the power grid 2 experiences a power outage, server 8 can be more reliably powered, thereby increasing the reliability of the power supply management system. Additionally, there is no need to install server 8 in the building, reducing the cost of applying the power supply management system to the building's electrical system.

[0094] Furthermore, in this power supply management method, in the system power detection step S1, the charger / discharger 3 detects whether the system power 2 is energized or de-energized. Subsequently, in the control information step S2, if the system power status information detected by the charger / discharger 3 indicates that the system power 2 is energized, the control device 9 receives the energized switch information A from the server 8 as switch control information. Alternatively, in the control information step S2, if the system power status information indicates that the system power 2 is de-energized, the control device 9 receives the de-energized switch information B from the server 8 as switch control information. The energized switch information A is information that turns each outlet switch 7 to the ON state. The de-energized switch information B is information that turns the first switch 7a to the ON state and the second switch 7b to the OFF state among the multiple outlet switches 7. Subsequently, in the switch control step S3, the control device 9 individually controls each outlet switch 7 based on the switch control information.

[0095] Therefore, when the grid power supply 2 experiences a power outage, the first switch 7a can be turned ON and the second switch 7b can be turned OFF. This allows the power supply to the second outlet 51b, which is equipped with the second switch 7b, to be forcibly stopped even when power from the EV4's battery is supplied to the wiring section 6 from the charger / discharger 3 during a power outage of the grid power supply 2. Consequently, the power consumption of the EV4's battery can be limited during a power outage of the grid power supply 2, and the power supply time from the EV4's battery can be extended during a power outage of the grid power supply 2. In addition, by connecting priority appliances, which have a higher power supply priority than ordinary household appliances, to the first outlet 51a equipped with the first switch 7a, it is possible to prevent the problem of priority appliances not receiving power during a power outage of the grid power supply 2.

[0096] In the above embodiment, the settings of each outlet switch 7 in the server 8 may be mutually changeable between being set as a power outage connection switch and being set as a power outage cutoff switch by operating an input device that can communicate with the server 8. In this case, by changing the ON state setting in the power outage switch information B in the switch setting table stored in the server 8 to an OFF state, the setting of the corresponding outlet switch 7 as a power outage connection switch is changed to a power outage cutoff switch. Also in this case, by changing the OFF state setting in the power outage switch information B in the switch setting table to an ON state, the setting of the corresponding outlet switch 7 as a power outage cutoff switch is changed to a power outage connection switch. In this way, the power supply management outlet 51 that forcibly stops the power supply to the EV4 battery can be easily changed.

[0097] Furthermore, in the above embodiment, the server 8 is located on the cloud. However, the server 8 may also be installed in a building as an on-premise server. In this case, a separate power source independent of the grid power supply 2, such as an emergency battery, is used to supply power to the server 8. In this case, the server 8 may also be able to communicate with the charger / discharger 3 via a wired connection. Moreover, in this case, the determination unit 94 of the control device 9 may also be able to communicate with the server 8 via a wired connection.

[0098] Furthermore, in the above embodiment, the battery of the EV4 is used as the external power source that supplies power from the charger / discharger 3 to the switch 1. However, it is not limited to this, and a hybrid vehicle battery, an emergency battery, etc., may also be used as the external power source.

[0099] Furthermore, in the above embodiment, the determination unit 94 retrieves information corresponding to the system power status information from the switch setting table based on the system power status information received from the server 8, and receives the retrieved information from the server 8 as switch control information. However, the server 8 may perform the process of retrieving information corresponding to the system power status information from the switch setting table based on the system power status information. In this case, the determination unit 94 receives the information retrieved by the server 8 from the switch setting table as switch control information from the server 8. In this way, the determination unit 94 of the control device 9 can receive the information retrieved by the server 8 from the switch setting table as switch control information from the server 8 without receiving the system power status information from the server 8. This reduces the amount of information that the determination unit 94 of the control device 9 communicates with the server 8, and thus reduces the power consumption of the control device 9.

[0100] Furthermore, in the above embodiment, the number of electrical outlets 5, the number of home appliances 10, and the types of home appliances 10 provided in each dwelling unit are not particularly limited.

[0101] Furthermore, in the above embodiment, the building to which the power supply management system is applied is an apartment building. However, it is not limited to this, and the building to which the power supply management system is applied may be a detached house, an office, or the like.

[0102] Furthermore, in the above embodiment, among the multiple outlets 5 provided in the dwelling unit, there is a general outlet 52 that does not have an outlet switch 7. However, all of the multiple outlets 5 provided in the dwelling unit may be power supply management outlets 51 equipped with an outlet switch 7. In this way, the power supply to all of the multiple outlets 5 provided in the dwelling unit can be managed, and the duration of power supply by an external power source in the event of a power outage in the grid power supply 2 can be further ensured.

[0103] Furthermore, the functions of the server 8, switch control unit 92, and determination unit 94 according to the above embodiment are realized by a processing circuit. Figure 9 is a configuration diagram showing a first example of a processing circuit that realizes the functions of the server 8, switch control unit 92, and determination unit 94 according to Embodiment 1. The processing circuit 100 in the first example is dedicated hardware.

[0104] Furthermore, the processing circuit 100 may include, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.

[0105] Figure 10 is a configuration diagram showing a second example of a processing circuit that realizes the functions of the server 8, switch control unit 92, and determination unit 94 according to Embodiment 1. The processing circuit 200 of the second example includes a processor 201 and a memory 202.

[0106] In the processing circuit 200, the functions of the server 8, switch control unit 92, and determination unit 94 are realized by software, firmware, or a combination of software and firmware. The software and firmware are written as programs and stored in memory 202. The processor 201 realizes the functions of the server 8, switch control unit 92, and determination unit 94 by reading and executing the programs stored in memory 202.

[0107] A program stored in memory 202 can be said to cause the computer to execute the procedures or methods described above. Here, memory 202 refers to non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), and EEPROM (Electrically Erasable and Programmable Read Only Memory). Magnetic disks, flexible disks, optical disks, compact disks, minidiscs, DVDs, etc., also fall under the category of memory 202.

[0108] Furthermore, some of the functions of the server 8, switch control unit 92, and determination unit 94 described above may be implemented using dedicated hardware, while others may be implemented using software or firmware.

[0109] Thus, the processing circuit can realize the above-described functions of the server 8, switch control unit 92, and determination unit 94 through hardware, software, firmware, or a combination thereof.

[0110] The configurations shown in the embodiments described above are merely examples of the content of this disclosure. The embodiments can be combined with other known technologies. Some parts of the configurations of the embodiments can be omitted or modified without departing from the gist of this disclosure.

[0111] The various aspects of this disclosure are summarized below as an appendix.

[0112] (Note 1) Multiple outlet switches are individually provided for multiple power supply management outlets installed in the building, and when the switch is ON, it connects the power supply management outlet to the wiring section, and when the switch is OFF, it disconnects the power supply management outlet from the wiring section. A server that receives the detection result of the charger / discharger, which detects whether the system power supply is energized or unpowered, as system power status information, among the system power supply and charger / discharger that are selectively connected to the wiring section by the switch, and stores the power-on switch information and the unpowered switch information, A control device that receives the power-on switch information from the server as switch control information when the system power status information indicates that the system power is energized, and receives the power-out switch information from the server as switch control information when the system power status information indicates that the system power is out, and controls each of the outlet switches individually based on the switch control information. Equipped with, The charger / discharger is connected to the wiring section by the switch, thereby enabling the power of an external power supply connected to the charger / discharger to be supplied to the wiring section. The aforementioned power-on switch information is information that sets each of the aforementioned outlet switches to the ON state. The aforementioned power outage switch information is a power supply management system that sets some of the outlet switches, which are power outage connection switches, to the ON state, and the outlet switches other than the power outage connection switches, which are power outage cutoff switches, to the OFF state. (Note 2) The control device comprises a power supply circuit and a switch control unit connected to the power supply circuit and the wiring section, respectively. The power supply circuit includes a control power supply independent of the grid power supply and a control power supply switch connected to the wiring section. When the wiring section is energized, power is supplied from the wiring section to the switch control section. When the wiring section is in a power outage state, the control power supply switch is turned ON, thereby supplying power from the control power supply to the switch control unit. The power supply management system described in Appendix 1, wherein the switch control unit controls each of the outlet switches individually based on the switch control information by supplying power to the switch control unit. (Note 3) The control device has a detection unit connected to the power supply circuit and a determination unit connected to the detection unit. The detection unit receives power from the control power supply when the control power supply switch is turned ON. The detection unit drives the determination unit by supplying power from the control power supply to the detection unit. The power supply management system according to Appendix 2, wherein the determination unit is driven by the detection unit to receive the system power status information from the server, and based on the system power status information received from the server, receives the switch control information from the server and transmits the switch control information to the switch control unit. (Note 4) The power supply management system described in any one of the appendices 1 to 3, wherein the setting of each outlet switch in the server can be changed between the setting as a power outage connection switch and the setting as a power outage cutoff switch by operating an input device that can communicate with the server. (Note 5) The aforementioned server is a power supply management system described in any one of the appendices 1 to 4, located on the cloud. (Note 6) A system power detection step in which, among the system power supply and charge / discharge device that are selectively connected to the wiring section by the switch, the charge / discharge device detects whether the system power supply is energized or de-energized, A control information step in which, among the power-on switch information and power-off switch information stored on the server, the control device receives the power-on switch information from the server as switch control information when the system power status information, which is the detection result of the charger / discharger, indicates that the system power is powered on, and when the system power status information indicates that the system power is powered off, the control device receives the power-off switch information from the server as switch control information; A switch control step in which a control device individually controls multiple outlet switches, each individually provided on multiple power supply management outlets installed in a building, based on the switch control information, and Equipped with, The charger / discharger is connected to the wiring section by the switch, thereby enabling the power of an external power supply connected to the charger / discharger to be supplied to the wiring section. Each of the aforementioned outlet switches, when in the ON state, connects the power supply management outlet to the wiring section, and when in the OFF state, disconnects the power supply management outlet from the wiring section. The aforementioned power-on switch information is information that sets each of the aforementioned outlet switches to the ON state. The power supply management method provides the aforementioned power outage switch information, which includes setting some of the outlet switches, namely the power outage connection switches, to the ON state, and setting the outlet switches other than the power outage connection switches, namely the power outage cutoff switches, to the OFF state. [Explanation of symbols]

[0113] 1 Switch, 2 Power supply, 3 Charger / discharger, 6 Wiring section, 7 Outlet switch, 7a First switch (Power outage connection switch), 7b Second switch (Power outage cutoff switch), 8 Server, 9 Control device, 51 Power supply management outlet, 91 Power supply circuit, 92 Switch control unit, 93 Detection unit, 94 Judgment unit, 911 Control power supply, 912 Control power supply switch.

Claims

1. Multiple outlet switches are individually provided for multiple power supply management outlets installed in the building, and when the switch is turned ON, it connects the power supply management outlet to the wiring section, and when the switch is turned OFF, it disconnects the power supply management outlet from the wiring section. A server that receives the detection result of the charger / discharger, which detects whether the system power supply is energized or unpowered, as system power status information, among the system power supply and charger / discharger that are selectively connected to the wiring section by the switch, and stores the power-on switch information and the unpowered switch information, A control device that receives the power-on switch information from the server as switch control information when the system power status information indicates that the system power is energized, and receives the power-out switch information from the server as switch control information when the system power status information indicates that the system power is out, and controls each of the outlet switches individually based on the switch control information. Equipped with, The charger / discharger is connected to the wiring section by the switch, thereby enabling the power of an external power supply connected to the charger / discharger to be supplied to the wiring section. The aforementioned power-on switch information is information that sets each of the outlet switches to the ON state. The aforementioned power outage switch information is a power supply management system that sets some of the outlet switches, which are power outage connection switches, to the ON state, and the outlet switches other than the power outage connection switches, which are power outage cutoff switches, to the OFF state.

2. The control device comprises a power supply circuit and a switch control unit connected to the power supply circuit and the wiring section, respectively. The power supply circuit includes a control power supply independent of the grid power supply and a control power supply switch connected to the wiring section. When the wiring section is energized, power is supplied from the wiring section to the switch control section. When the wiring section is in a power outage state, the control power supply switch is turned ON, thereby supplying power from the control power supply to the switch control unit. The power supply management system according to claim 1, wherein the switch control unit controls each of the outlet switches individually based on the switch control information by supplying power to the switch control unit.

3. The control device has a detection unit connected to the power supply circuit and a determination unit connected to the detection unit. The detection unit receives power from the control power supply when the control power supply switch is turned ON. The detection unit drives the determination unit by supplying power from the control power supply to the detection unit. The power supply management system according to claim 2, wherein the determination unit is driven by the detection unit to receive the system power status information from the server, and based on the system power status information received from the server, receives the switch control information from the server and transmits the switch control information to the switch control unit.

4. The power supply management system according to any one of claims 1 to 3, wherein the setting of each outlet switch in the server can be changed between a setting as a power outage connection switch and a setting as a power outage cutoff switch by operating an input device that can communicate with the server.

5. The power supply management system according to any one of claims 1 to 3, wherein the server is located on the cloud.

6. A system power detection step in which, among the system power supply and charge / discharge device that are selectively connected to the wiring section by the switch, the charge / discharge device detects whether the system power supply is energized or de-energized, A control information step in which, among the power-on switch information and power-off switch information stored on the server, the control device receives the power-on switch information from the server as switch control information when the system power status information, which is the detection result of the charger / discharger, indicates that the system power is powered on, and when the system power status information indicates that the system power is powered off, the control device receives the power-off switch information from the server as switch control information; A switch control step in which a control device individually controls multiple outlet switches, each individually provided on multiple power supply management outlets installed in a building, based on the switch control information, and Equipped with, The charger / discharger is connected to the wiring section by the switch, thereby enabling the power of an external power supply connected to the charger / discharger to be supplied to the wiring section. Each of the aforementioned outlet switches, when turned ON, connects the power supply management outlet to the wiring section, and when turned OFF, disconnects the power supply management outlet from the wiring section. The aforementioned power-on switch information is information that sets each of the outlet switches to the ON state. The power supply management method provides the aforementioned power outage switch information, which includes setting some of the outlet switches, namely the power outage connection switches, to the ON state, and setting the outlet switches other than the power outage connection switches, namely the power outage cutoff switches, to the OFF state.

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