JP2017005787A - Energy management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy management system capable of dealing with power saving request by supplying power from an electric vehicle to a user, without causing any hindrance in the use of the electric vehicle.SOLUTION: An energy management system 100 includes an operation unit 33 receiving an input operation for permitting or rejecting acceptance of power saving request, and a household determination unit 36 for determining whether the input operation was performed by a user belonging to a main household 11 constituting a user 10, or a user belonging to a sub-household 12 constituting the user 10, based on the input operation received by the operation unit 33. Only when a determination is made that the input operation is performed by a user belonging to the main household 11, a control unit 34 outputs a power supply permission request from the battery 511 of an electric vehicle 51 to the apparatus.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an energy management system that manages electric power supplied from an electric vehicle and an electric power supply device other than the electric vehicle to devices used in consumers including a plurality of households.

  As an energy management system for performing energy management in each consumer, one described in Patent Document 1 below is known. The energy management system requires each customer to save power during the daytime in summer when the power demand temporarily increases. Specifically, in the energy management system, when a power saving request (instruction signal) also called “demand response (DR)” is received from an electric power company, the notification device notifies the user and sets the air conditioner. Change the temperature. Thereby, the power consumption in each consumer can be suppressed and the electric power received from the electric power company can be suppressed.

  The energy management system described in Patent Literature 1 described below performs power saving regardless of the user's intention when receiving a power saving request. However, there are users who want to determine the response to power saving requests independently. As a method of responding to such a user's request, first, the user can select whether to accept or reject the power saving request, and when the user selects to accept the power saving request, the power saving request can be considered. .

  In recent years, power supply systems that suppress power received from electric power providers by installing power generation devices such as solar power generation devices and fuel cells, and power storage devices such as stationary storage batteries in each consumer are widely used. It is popular. Along with this, development of energy management systems that perform energy management in an integrated manner has become active in order to efficiently use the power supplied from each device in each customer.

  In addition, against the background of increasing environmental awareness and the like, a shift from a vehicle that travels using fossil fuels such as gasoline to an electric vehicle that travels using electric power stored in a battery is progressing. Even in the energy management system described above, an electric power supply system called V2H (Vehicle to Home) or the like that connects an electric vehicle that is parked with a consumer so that electricity can be supplied and supplies electric power to the consumer from the battery of the electric vehicle Is also being studied. In addition to the solar power generation device and the stationary storage battery, power can be supplied from the electric vehicle, thereby further suppressing the power supplied from the electric power company.

JP 2002-44883 A

  However, in the power supply system that supplies electric power to consumers from the electric vehicle as described above, it is inconvenient to use the electric vehicle when applied to a so-called two-family house where the main household and the sub-household live together. There was a problem.

  For example, even if only the primary household owns an electric vehicle, if the sub-household chooses to accept it in response to a power saving request from an electric power company, the electric power from the electric vehicle to the consumer Supply will be made. For this reason, when the main household subsequently uses an electric vehicle, there is a risk that it may hinder the use, for example, only a small amount of power remains in the battery of the electric vehicle and the vehicle cannot travel a sufficient distance. .

  The present invention has been made in view of such a problem, and its purpose is to respond to a power saving request by supplying electric power from an electric vehicle to a consumer without hindering the use of the electric vehicle. To provide a possible energy management system.

  In order to solve the above problems, an energy management system according to the present invention provides an electric vehicle (51) and a power supply device other than the electric vehicle for devices used in a consumer (10) including a plurality of households. An energy management system (100) for managing power supplied from (52), the receiving unit (32) receiving a power saving request to the consumer, and an input for permitting or rejecting the power saving request Based on the input operation accepted by the operation unit (33) and the operation unit received by the operation unit, whether the input operation was made by a user belonging to a main household constituting the consumer or a sub-household constituting the consumer The electric vehicle, based on a household determination unit that determines whether the user belongs to the user, an input operation received by the operation unit, and a determination result of the household determination unit A control unit for controlling the power supply of the battery (511) and from the power supply to the device (34), the having. The control unit outputs a power supply permission request from the battery to the device only when it is determined that the input operation has been performed by a user belonging to the main household.

  According to the present invention, the control unit outputs a power supply permission request from the battery to the device only when it is determined that an input operation has been performed by a user belonging to the main household. Therefore, the power supply is not permitted by the user belonging to the sub household. For this reason, it is possible to prevent inconvenience that sufficient electric power does not remain in the battery of the electric vehicle and hinder the use of the electric vehicle by the user belonging to the main household.

  ADVANTAGE OF THE INVENTION According to this invention, the energy management system which can supply an electric power to a consumer from an electric vehicle, and can respond to a power-saving request | requirement without interfering with use of an electric vehicle can be provided.

It is a mimetic diagram showing the composition of the energy management system concerning the embodiment of the present invention. It is a functional block diagram which shows the HEMS apparatus of FIG. It is a flowchart which shows the flow of the process which the control part of FIG. 2 performs. It is a schematic diagram which shows the display content of the display part of FIG. It is a schematic diagram which shows the display content of the display part of FIG. It is a schematic diagram which shows the display content of the display part of FIG. It is a schematic diagram which shows the display content of the display part of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  With reference to FIG. 1, the structure of the energy management system 100 which concerns on embodiment of this invention is demonstrated. The energy management system 100 is also referred to as a HEMS (Home Energy Management System) and is applied to the customer 10.

  The consumer 10 is a so-called two-family house in which a main household 11 and a sub-household 12 who are users of the energy management system 100 live together. Parents and their children belong to the main household 11. In addition, one parent of the parent of the main household 11 belongs to the sub-household 12. The consumer 10 is supplied with commercial power from the power provider EPP through the power system 20. Further, the consumer 10 is connected to the electric vehicle 51 and the stationary storage battery 521 and the solar power generation device 522 which are power supply devices 52 other than the electric vehicle 51 so as to be energized, and can receive power supply from each. It is said that.

  The electric vehicle 51 is owned by the main household 11. In other words, one of the plurality of households constituting the consumer 10 that owns the electric vehicle 51 is the main household 11. The electric vehicle 51 has a battery 511 that is a lithium ion battery that can be charged and discharged. The electric power released by the battery 511 while the electric vehicle 51 is traveling is supplied to an electric motor (not shown) that generates torque.

  In addition, a vehicle charger 512 is installed in the garage of the customer 10 who parks the electric vehicle 51. The battery 511 can be charged by being supplied with electric power from the consumer 10 side when the electric vehicle 51 is connected to the vehicle charger 512 via the cable 513 so as to be energized. Further, the battery 511 can supply the discharged power to the consumer 10 via the cable 513 and the vehicle charger 512. The vehicle charger 512 acquires the charging rate of the battery 511 via the cable 513 and generates a signal corresponding to the charging rate and transmits the signal to the outside. In addition, the charging rate of the battery 511 can be acquired by the HEMS device 30 via the server 41 via a communication module (not shown) of the electric vehicle 51.

  The stationary storage battery 521 is a lithium ion battery that is installed at a predetermined location of the customer 10 and can be charged and discharged. The stationary storage battery 521 can be charged with power supplied from the power provider EPP or surplus power generated by a solar power generation device 522 described later. Moreover, the stationary storage battery 521 can discharge electric power and supply it to the customer 10. Although the electric power discharged from the stationary storage battery 521 is a direct current, the direct current power is converted into alternating current power by a power converter (not shown) and then supplied to the customer 10.

  The solar power generation device 522 is a power generation device that is installed on the roof of the customer 10 and generates electric power by converting solar energy into electric power. The power generated by the solar power generation device 522 is direct current, but the direct current power is converted into alternating current power by a power converter (not shown) and then supplied to the customer 10. In addition, when the amount of power consumed by the customer 10 is smaller than the amount of power generated by the solar power generation device 522, excess DC power is transformed by the power converter, and the battery 511 or the stationary storage battery 521 of the electric vehicle 51 is used. Can be charged to charge them.

  In addition, in this embodiment, although the lithium ion battery is employ | adopted as the battery 511 and the stationary storage battery 521 of the electric vehicle 51, this invention is not limited to these. That is, as the battery 511 and the stationary storage battery 521, other types of secondary batteries such as a nickel metal hydride battery and a lead battery can be employed.

  Moreover, although this embodiment demonstrates the solar power generation device 522 as an example as a power generation device, this invention is not limited to this. That is, it is possible to employ a fuel cell that generates power using city gas as the power generation device.

  The energy management system 100 is a system that manages the operation of each device in order to efficiently use electric power in the consumer 10 as described above. The energy management system 100 includes a HEMS device 30 installed in the customer 10.

  The HEMS device 30 is formed in a panel shape, for example, and is installed on the wall surface of the room of the customer 10. The HEMS device 30 is connected to the vehicle charger 512, the stationary storage battery 521, and the solar power generation device 522 of the customer 10 via a communication line, and serves as a control device that performs bidirectional communication with them and performs integrated control. It has a function. In practice, the HEMS device 30 is connected to the vehicle charger 512 and the like via a device such as a distribution board, but these are not shown in FIG.

  Further, the HEMS device 30 can communicate with the electric power provider EPP through the communication system 40. The communication system 40 includes a server 41, a gateway 42, a wireless router 43, and a hub 44.

  The server 41 is a device managed and operated by the business operator of the HEMS device 30. The server 41 can communicate with the electric power provider EPP and the customer 10, and can receive various signals from each of them to store predetermined information or provide stored information. In addition, the server 41 can perform two-way wireless communication with the mobile terminal SP1 that the main household 11 and the sub-household 12 carry outside the customer 10 by using a line provided by the communication carrier. The management and operation of the server 41 can also be performed by a person other than the operator of the HEMS device 30, such as an electric power operator EPP and an aggregator. When the electric power company EPP manages and operates the server 41, the information from the electric power company EPP may be provided directly to the HEMS device 30 or may be provided via another server. .

  The gateway 42 is a device installed indoors in the customer 10. The gateway 42 can communicate with the server 41 via the Internet line, and mainly performs communication protocol conversion.

  The wireless router 43 is a device installed indoors in the customer 10. The wireless router 43 is communicable with the gateway 42 via an indoor wiring, and transfers packets according to a predetermined algorithm. The wireless router 43 can perform wireless communication with the mobile terminal SP2 that the main household 11 and the sub-household 12 use indoors. The wireless router 43 can communicate with the HEMS device 30 and the personal computer PC via the indoor wiring and the hub 44.

  The energy management system 100 supplies power supplied from the electric vehicle 51 and the power supply device 52 to power consuming equipment (not shown) such as an air conditioner and a lighting device used in the customer 10 as described above. Manage.

  Next, the HEMS device 30 will be described with reference to FIG. A part or all of the HEMS device 30 is configured by an analog circuit or a digital processor. In any case, a functional control block is configured in the HEMS device 30 in order to fulfill the function of transmitting a control signal based on the received signal.

  FIG. 2 shows the HEMS device 30 as a functional block diagram. Note that the software module incorporated in the analog circuit or digital processor constituting the HEMS device 30 is not necessarily divided into the functional blocks shown in FIG. 2, and is configured to function as a plurality of functional blocks. It does not matter, and it may be further subdivided. A person skilled in the art can appropriately change the actual configuration inside the HEMS device 30 as long as the processing described later can be executed.

  As illustrated in FIG. 2, the HEMS device 30 includes a display unit 31, a reception unit 32, an operation unit 33, a control unit 34, a notification unit 35, and a household determination unit 36.

  The display unit 31 is a liquid crystal panel provided on the outer surface of the HEMS device 30. The display unit 31 displays various information based on the control signal received from the control unit 34.

  The receiving unit 32 is a part that receives a predetermined signal from a device such as the above-described vehicle charger 512 or the power provider EPP. Specifically, the receiving unit 32 receives a signal corresponding to the charging rate of the battery 511 (see FIG. 1) from the vehicle charger 512, and also receives a power saving request signal from the power provider EPP. This power saving request signal is transmitted by the electric power company EPP in order to ask each customer 10 for cooperation for power saving in the daytime in summer when the power demand is temporarily increased and the supply and demand is tight.

  The operation unit 33 is a part provided for the main household 11 and the sub-household 12 to perform an input operation. The operation unit 33 is disposed on the outer surface of the HEMS device 30. In the present embodiment, a part of the operation unit 33 is a capacitive touch panel integrated with the display unit 31. Therefore, the main household 11 and the sub-household 12 can perform an input operation by directly touching the display contents of the display unit 31 with fingers.

  The control unit 34 is a part that performs various calculations and controls each device of the energy management system 100 by transmitting a control signal. Specifically, the control unit 34 can transmit a control signal to the vehicle charger 512 to cause the battery 511 of the electric vehicle 51 to release power and supply it to the consumer 10. The control unit 34 predetermines the main household 11 that is the owner of the vehicle charger 512 as a user who has the authority to permit power supply from the battery 511 to the customer 10.

  In addition, the control unit 34 transmits a control signal to the solar power generation device 522 so that the power generated by the solar power generation device 522 is supplied to the customer 10, or surplus power is supplied to the battery 511 or the stationary type of the electric vehicle 51. It can be supplied to the storage battery 521. Further, the control unit 34 can transmit a control signal to the stationary storage battery 521 to cause the stationary storage battery 521 to charge or discharge.

  The control unit 34 preferentially supplies power to the customer 10 from the stationary storage battery 521 and the solar power generation device 522. That is, when the power required by the customer 10 can be covered only by the power supplied from the stationary storage battery 521 and the solar power generation device 522, the control unit 34 supplies power to the battery 511 of the electric vehicle 51. I ca n’t.

  The notification unit 35 is a part that notifies the main household 11 and the sub-household 12 of predetermined information. For example, when the receiving unit 32 receives the power saving request signal, the notification unit 35 notifies that the power saving request is received from the power provider EPP. As a means for the notification unit 35 to perform notification, a known device such as a device using voice or display can be adopted. In addition, the notification unit 35 can be separately prepared as a device that is structurally independent of the HEMS device 30.

  The household determination unit 36 is a part that determines whether the input operation is made by a user belonging to the main household 11 or a user belonging to the sub-household 12 based on the input operation received by the operation unit 33. As will be described later, the household determination unit 36 makes the determination based on a login operation received by the operation unit 33.

  The main household 11 and the sub-household 12 can confirm the operation of the energy management system 100 by confirming the display contents of the display unit 31 of the HEMS device 30 configured as described above. Further, the main household 11 and the sub-household 12 can change the operation of the energy management system 100 by performing an input operation with the operation unit 33 of the HEMS device 30.

  It is possible to provide the personal computer PC and the portable terminals SP1 and SP2 with functions similar to those of the display unit 31 and the like of the HEMS device 30. The portable terminals SP1 and SP2 may be tablet type information terminals. As a result, the main household 11 and the sub-household 12 can check the operation of the energy management system 100 and perform an input operation for changing the operation indoors using the personal computer PC or the portable terminal SP1, and can also be carried on the go. The same confirmation and input operation can be performed by the terminal SP2.

  Next, processing performed by the control unit 34 of the HEMS device 30 will be described with reference to FIGS. 3 to 7. FIG. 3 shows the flow of processing executed by the control unit 34 triggered by the reception unit 32 receiving a power saving request signal from the power provider EPP. 4 to 7 show the display contents of the display unit 31 in the process shown in FIG.

  First, the control part 34 determines whether the electric power supply from the electric vehicle 51 to the consumer 10 is required by step S1 shown by FIG. That is, based on the power saving request signal, the control unit 34 can supply the power used by the device of the customer 10 only by the power supply from the power supply device 52, or can supply the power from the battery 511 in addition to the power supply device 52. Is also used, it is determined whether the power used by the device of the customer 10 can be covered. When it is determined that electric power supply from the electric vehicle 51 to the customer 10 is necessary (S1: YES), that is, the amount of power that the electric power company EPP requests the customer 10 to save power is relatively large and stationary. When it is determined that only the power supplied from the type storage battery 521 and the solar power generation device 522 cannot respond to the power saving request, the control unit 34 proceeds to the process of step S2.

  Next, the control part 34 transmits a control signal and operates the alerting | reporting part 35 by step S2. Specifically, the control unit 34 performs notification by blinking light.

  Next, the control part 34 determines whether login operation by the main household 11 was made by step S3. At this time, the display 31 of the HEMS device 30 is displayed asking for a login operation when starting an input operation, as shown in FIG. The main household 11 and the sub-household 12 input an ID (identification information) and a password assigned to each of the main household 11 and the sub-household 12 through the operation unit 33, and a “login to main household” button 331 or a virtual display on the display unit 31 or A login operation is performed in which the “login to sub-household” button 332 is touched with fingers. That is, here, the “login to main household” button 331 and the “login to sub-household” button 332 function as a part of the operation unit 33. The control part 34 operates the alerting | reporting part 35 until login operation by the main household 11 is made (S3: NO). On the other hand, when it is determined that the login operation has been performed by the main household 11 (S3: YES), the control unit 34 determines that the main household 11 is performing an input operation on the operation unit 33, and proceeds to the process of step S4.

  Next, the control part 34 determines whether the charging rate of the battery 511 of the electric vehicle 51 is Y% (for example, 20%) or less at step S4. As described above, the charging rate of the battery 511 is acquired by the vehicle charger 512, and the control unit 34 determines whether or not the charging rate is equal to or less than a predetermined threshold Y%. . When it determines with the charging rate of the battery 511 of the electric vehicle 51 not being below Y% (S4: NO), ie, when it can be judged that the battery 511 is fully charged, the control part 34 performs the process of step S5. Proceed to

  Next, the control part 34 displays the power saving request | requirement from the electric power provider EPP on the display part 31 by step S5. Specifically, the control unit 34 displays the content (main household screen) shown in FIG. 5 on the display unit 31 and informs the main household 11 that it has received a power saving request from the electric power company EPP (electric power company). The main household 11 is requested to indicate the intention to permit or reject the power saving request. That is, the control part 34 outputs the permission request | requirement of the electric power supply from the battery 511 to the apparatus of the consumer 10 by this step S5. When permitting acceptance of a power saving request, the main household 11 touches the “agreement” button 333 virtually displayed on the display unit 31 with his / her finger to display the intention. On the other hand, when refusing to accept the power saving request, the main household 11 touches the “see-off” button 334 virtually displayed on the display unit 31 with his / her finger to display the intention. That is, here, the “agreement” button 333 and the “defer” button 334 function as a part of the operation unit 33.

  In addition, when the login operation by the sub-household 12 is performed on the operation unit 33, the display unit 31 displays content (sub-household screen) different from that shown in FIG. 5 (not shown). Unlike the case where the main household 11 performs a login operation, the display content does not request that the power saving request is received, or that the power saving request is accepted or rejected. Therefore, in this case, the user belonging to the sub-household 12 cannot perform an input operation for permitting or rejecting the power saving request.

  Next, control part 34 judges whether main household 11 permitted acceptance of a power-saving demand at Step S6. That is, the control unit 34 determines whether or not the “agreement” button 333 illustrated in FIG. 5 has been touched. When it is determined that the main household 11 has not permitted (denied) acceptance of the power saving request (S6: NO), the control unit 34 ends the process. On the other hand, when it determines with the main household 11 permitting acceptance of a power-saving request | requirement (S6: YES), the control part 34 progresses to the process of step S7 next.

  Next, the control part 34 supplies electric power to the consumer 10 from the electric vehicle 51 and the electric power supply apparatus 52 by step S7. That is, the battery 511 and the stationary storage battery 521 of the electric vehicle 51 are made to release power, and the power is supplied to the customer 10. At this time, power of the solar power generation device 522 may be generated. As a result, it becomes possible for the consumer 10 to suppress the electric power supplied from the electric power provider EPP. At this time, the control unit 34 causes the display unit 31 to display the contents shown in FIG.

  Next, in step S8, the control unit 34 determines whether or not the charging rate of the battery 511 of the electric vehicle 51 has become Y% or less. That is, it is determined whether or not the charging rate of the battery 511 of the electric vehicle 51 has decreased to Y% or less as a result of the electric power being discharged and supplied to the customer 10. When it determines with the charge rate of the battery 511 of the electric vehicle 51 not being Y% or less (S8: NO), the control part 34 continues supplying electric power to the consumer 10 from the electric vehicle 51 and the electric power supply apparatus 52. FIG. On the other hand, when it determines with the charging rate of the battery 511 of the electric vehicle 51 being Y% or less (S8: YES), the control part 34 complete | finishes a process.

  On the other hand, when it determines with the electric power supply from the electric vehicle 51 to the consumer 10 not being required in step S1 (S1: NO), ie, the electric energy which the electric power provider EPP has requested | required the consumer 10 power saving. Is relatively small and the control unit 34 proceeds to the process of step S9 when it is determined that the power saving request can be handled only by the power supplied from the stationary storage battery 521 and the solar power generation device 522. In step S <b> 9, the control unit 34 supplies power to the customer 10 from the power supply device 52 without causing the electric vehicle 51 to supply power.

  On the other hand, if it is determined in step S4 that the charging rate of the battery 511 of the electric vehicle 51 is Y% or less (S4: YES), that is, if it can be determined that the battery 511 is not sufficiently charged, control is performed. The unit 34 proceeds to the process of step S10. In step S10, the control unit 34 displays that the power saving request cannot be accepted. Specifically, the control unit 34 causes the display unit 31 to display the contents shown in FIG.

  According to the energy management system 100 as described above, only when it is determined that an input operation has been performed by a user belonging to the main household 11, a permission request for power supply from the battery 511 to the device of the customer 10 is output. Therefore, the power supply is not permitted by a user belonging to the sub-household 12. For this reason, it is possible to prevent inconvenience that sufficient electric power does not remain in the battery 511 of the electric vehicle 51 and hinder use of the electric vehicle 51 by a user belonging to the main household 11. Become.

  The energy management system 100 also includes a display unit 31 that switches between a main household screen displayed for the main household 11 and a sub-household screen displayed for the sub-household. Only when the display unit 31 displays the main household screen, the operation unit 33 displays a power saving request and accepts an input operation for permitting or rejecting the power saving request. As a result, it is possible to reliably prevent the power supply from the battery 511 of the electric vehicle 51 to the customer 10 due to the input operation of the sub-household 12.

  Further, the energy management system 100 sets the household that owns the electric vehicle 51 as the main household when either the main household 11 or the sub-household 12 owns the electric vehicle 51. As a result, only the main household that owns the electric vehicle 51 can permit power supply from the battery 511 of the electric vehicle 51 to the customer 10. Therefore, it is possible to reliably prevent the power supply from the battery 511 of the electric vehicle 51 to the consumer 10 by the input operation of the sub-household 12.

  In addition, the control unit 34 can supply the power used by the device by supplying power from the power supply device 52 based on the power saving request, or use the power supply from the battery 511 in addition to the power supply device 52. Judge whether the electricity used by can be covered. The control unit 34 outputs a permission request when power supply from the battery 511 is required.

  For example, the stationary storage battery 521 does not cause great inconvenience unlike the electric vehicle 51 even if the charge amount is reduced by supplying power to the customer 10. According to the present invention, when the power used by the device can be covered only by the power supply from the power supply device 52, the power supply device 52 is automatically supplied with power without requesting permission for power supply to the consumer 10. It is possible to respond to the power saving request by performing the supply. This eliminates the need for the main household 11 and the sub-household 12 to respond to a request for permission to supply power.

  In addition, the energy management system 100 includes a vehicle charger 512 that acquires the charging rate of the battery 511 of the electric vehicle 51. The control unit 34 does not output a permission request when the charging rate of the battery 511 of the electric vehicle 51 is equal to or less than a predetermined Y%. As a result, at least the power corresponding to Y% in the charging rate can be left in the battery 511 to prepare for sudden use of the electric vehicle 51. Furthermore, it is possible to prevent the battery 511 from being over-discharged by supplying power to the customer 10, and to suppress deterioration of the battery 511.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. Each element included in each of the specific examples described above and their arrangement, material, condition, shape, size, and the like are not limited to those illustrated, and can be appropriately changed.

  For example, in the embodiment described above, it is assumed that parents and their children belong to the main household 11, and one parent of the parents of the main household 11 belongs to the sub-household 12. The invention is not limited to this form. That is, the number and sex of users belonging to each of the main household 11 and the sub-household 12 can be changed as appropriate. In the present embodiment, power management is performed for devices used in consumers including a plurality of households, but “households” are based on the same dwelling regardless of whether they are relatives or not. It refers to a group of those who share the majority. The “main household” and the “sub-household” are not necessarily separate households, and it is not necessary to have another householder. If so, it is enough. Therefore, “login to the main household” and “login to the sub-household” shown in FIG. 4 may be written as “login to the grandpa household” and “login to the eldest son's household”. It may be expressed as “login”.

DESCRIPTION OF SYMBOLS 10: Consumer 11: Main household 12: Sub household 32: Reception part 33: Operation part 34: Control part 36: Household judgment part 51: Electric vehicle 52: Electric power supply apparatus 100: Energy management system 511: Battery 512: For vehicles Charger (charge rate acquisition unit)

Claims (5)

An energy management system (100) for managing electric power supplied from an electric vehicle (51) and an electric power supply device (52) other than the electric vehicle to devices used in a consumer (10) including a plurality of households. Because
A receiving unit (32) for receiving a power saving request to the consumer;
An operation unit (33) for accepting an input operation for permitting or rejecting acceptance of the power saving request;
Based on the input operation received by the operation unit, it is determined whether the input operation is made by a user belonging to a main household constituting the consumer or a user belonging to a sub-household constituting the consumer. Household judgment department (36),
Based on the input operation received by the operation unit and the determination result of the household determination unit, the battery (511) of the electric vehicle and the control unit (34) for controlling power supply from the power supply device to the device; With
The said control part outputs the permission request | requirement of the electric power supply from the said battery to the said apparatus only when it judges that the said input operation was made from the user who belongs to the said main household, The energy management system characterized by the above-mentioned. A display unit (31) for switching between a main household screen to be displayed for the main household and a sub-household screen to be displayed for the sub-household;
The operation unit displays the power saving request and accepts an input operation for permitting or rejecting the power saving request only when the display unit displays the main household screen. Item 2. The energy management system according to Item 1.   The energy management system according to claim 1, wherein when any of the plurality of households owns the electric vehicle, the household owning the electric vehicle is set as the main household.   Based on the power saving request, the control unit can supply power used by the device only by supplying power from the power supply device, or by using power supply from the battery in addition to the power supply device. 2. The energy management system according to claim 1, wherein it is determined whether or not the power used by the device can be covered, and the permission request is output when power supply from the battery is required. A charging rate acquisition unit (512) for acquiring the charging rate of the battery of the electric vehicle;
The energy management system according to claim 1, wherein the control unit does not output the permission request when a charging rate of the battery of the electric vehicle is equal to or less than a predetermined value.

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