JP2016025682A - Electricity transfer suppression system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately suppress a transfer of electricity to an outside-vehicular facility from an electric company via a charge-discharge-enabled vehicle.SOLUTION: An electricity transfer suppression system includes: an electric energy calculation apparatus for calculating a supplied electric energy supplied from an electric company to a charge-discharge-enabled vehicle; and an electricity bill calculation apparatus for calculating an electricity bill for the supplied electric energy in a calculation method that suppresses a supply of electricity to an outside-vehicle facility from the vehicle storing electricity supplied from the electric company, the electricity bill calculated in a charge system where an actual unit price applied to an electric energy that is supplied from the electric company and used by the vehicle is lower than an actual unit price applied to an electric energy that is supplied from the electric company and used by the outside-vehicle facility.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to an electrical transfer suppression system.

  An electric vehicle that, based on customer information obtained from a charging device, adds the power usage fee of the charging device to the customer's electricity usage fee by referring to the customer's customer information database when the user is identified as the customer of the company There is known a charging system for use (see, for example, Patent Document 1).

JP2013-037429A

  In recent years, hybrid vehicles and electricity that can be charged by electricity supplied from a power system via a charging facility such as an external charging station, and that can supply electricity to a facility outside the vehicle such as a home or office An automobile (hereinafter simply referred to as “chargeable / dischargeable vehicle”) has been proposed. Such a chargeable / dischargeable vehicle is also referred to as a vehicle compatible with V2H (Vehicle to Home). Promoting the spread of such chargeable / dischargeable vehicles is useful from the viewpoint of the environment as well as from the viewpoint of increasing the capacity to cope with the peak time of power demand. For example, when the total amount of power that can be supplied from the power system is insufficient with respect to the power demand, the electricity stored in the chargeable / dischargeable vehicle is used to reduce the electrical load in the facility outside the vehicle (for example, household electrical equipment). This is because it can be operated. In this way, when a large number of chargeable / dischargeable vehicles become widespread, it becomes possible to utilize the power storage devices of a large number of chargeable / dischargeable vehicles as part of the power grid.

  As a proposal for promoting the spread of such chargeable / dischargeable vehicles, for the electric energy used in chargeable / dischargeable vehicles, for example, for the electric energy used in off-vehicle facilities such as homes and business establishments. A fee structure that applies a lower real unit price can be useful.

  However, a real unit price (hereinafter referred to as “first real unit price”) applied to the amount of power supplied from a certain electric company and used for a chargeable / dischargeable vehicle is supplied from the electric company. If it is cheaper than the actual unit price applied to the amount of power used in the facility outside the vehicle (hereinafter referred to as “second actual unit price”), there is an advantage due to the widespread use of chargeable / dischargeable vehicles as described above. Such inconvenience can also occur. That is, when the electricity supplied to the chargeable / dischargeable vehicle from the power system is supplied (transferred) to the facility outside the vehicle without being actually used in the chargeable / dischargeable vehicle, The first real unit price can be applied even though it is used in the above. If such transfer is performed without limitation, the first actual unit price or the like may be inappropriate. In addition, if the amount of power that is once supplied to a chargeable / dischargeable vehicle but is not used in the chargeable / dischargeable vehicle and transferred to the facility outside the vehicle increases, compared to the case where the same amount of power is directly supplied from the power system to the facility outside the vehicle. Since power loss is caused by passing through a chargeable / dischargeable vehicle, there is a disadvantage in terms of energy efficiency.

  An object of the present disclosure is to provide an electric transfer suppression system capable of appropriately suppressing transfer of electricity from an electric power system to an external facility via a chargeable / dischargeable vehicle.

According to one aspect of the present disclosure, a power amount calculation device that calculates a power amount supplied from an electric company to a chargeable / dischargeable vehicle;
The actual unit price applied to the amount of power supplied from the electric utility and used in the vehicle is the actual unit price applied to the amount of electric power supplied from the electric company and used in the facility outside the vehicle. Under a lower charge system, the electricity charge for the amount of supplied power is calculated by a calculation method that suppresses the supply of electricity from the vehicle that stores electricity supplied from the electric utility to the facility outside the vehicle. An electricity transfer suppression system including an electricity bill calculating device is provided.

  According to the present disclosure, it is possible to obtain an electric transfer suppression system capable of appropriately suppressing transfer of electricity from an electric power system to a facility outside the vehicle via a chargeable / dischargeable vehicle.

The figure which shows the schematic structural example of the electric transfer suppression system. Explanatory drawing of the electric power supply aspect between a facility outside a vehicle, a vehicle, and an electric power grid | system. The figure which shows the example of application of the electric transfer suppression system 1 in the electric power network 100. The figure which shows an example of the processing flow (Example 1) performed by the charging / discharging control apparatus 62. FIG. The figure which shows an example of the processing flow performed by the management center 70 corresponding to the process shown in FIG. The figure which shows another example (Example 2) of the processing flow performed by the charging / discharging control apparatus 62. The figure which shows an example of the processing flow performed by the management center 70 corresponding to the process shown in FIG. The figure which shows the relationship between the unit price and integrated charge amount Ki in Example 2. FIG. The figure which shows the detailed structural example of the facility H outside a vehicle of a consumer.

  Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a schematic configuration example of an electrical transfer suppression system 1.

  The electric transfer suppression system 1 is a system that suppresses the supply of electricity from a chargeable / dischargeable vehicle that stores electricity supplied from an electric power system to a facility outside the vehicle by an appropriate billing method. The electric transfer restraint system 1 is supplied from a certain electric power provider and used for the amount of electric power applied to the chargeable / dischargeable vehicle, and is supplied from the electric power provider and used in the facility outside the vehicle. This is suitable under a charge system that is cheaper than the second actual unit price applied to the amount of electric power. In the following, the first real unit price applied to the amount of electric power supplied from a certain electric company and used in a chargeable / dischargeable vehicle is the amount of electric power supplied from the electric company and used in the facility outside the vehicle. It is assumed that the price is lower than the second real unit price to be applied, and hereinafter, this premise is also referred to as “real precondition unit price”. The real unit price represents the unit price related to the final billing amount, and when the chargeable power amount W is [kWh] and the final billing amount is P [yen], P / W [ Yen / kWh]. There are a wide variety of methods for realizing the electrical transfer suppression system 1, and any realization method may be adopted.

  In the example illustrated in FIG. 1, the electric transfer suppression system 1 includes an electric energy calculation device 10 and an electricity bill calculation device 20.

  The power amount calculation device 10 calculates the amount of power supplied to the chargeable / dischargeable vehicle from the power system (hereinafter also referred to as “vehicle power supply amount”). The electric power system may be formed for each electric power company such as an electric power company or a retail electric power company, or may be partially or wholly integrated. A chargeable / dischargeable vehicle is a vehicle that can be charged by electricity supplied via a charging facility and can supply electricity to a facility outside the vehicle. The chargeable / dischargeable vehicle is typically a so-called plug-in hybrid vehicle or an electric vehicle. It should be noted that the chargeable / dischargeable vehicle does not mean that the vehicle itself forms the power storage device, but means that the power storage device (see the power storage device 80 in FIG. 3) included in the vehicle can be charged / discharged. The facility outside the vehicle is a facility that requires electric power (that is, a facility having an electric load) and is located outside the vehicle. It can be said that the facility outside the vehicle is a facility related to a consumer. The consumer may be an individual or a corporation. The facility outside the vehicle is typically a fixed facility, but may be a movable facility. The facility outside the vehicle typically includes a house, a factory, an office, a building, an apartment house, and the like.

  The power amount calculation device 10 calculates a vehicle power supply amount for each chargeable / dischargeable vehicle. In the following, a specific one chargeable / dischargeable vehicle will be described as an example. Hereinafter, “chargeable / dischargeable vehicle” is also simply referred to as “vehicle”.

  The electric energy calculation device 10 is typically provided in a charging facility. However, the electric energy calculation device 10 may be provided in the vehicle itself, or may be provided in a cable connecting the charging facility and the vehicle. The charging facility is typically in the form of a charging stand. The charging facility is typically located in a vehicle user's residence (eg, a vehicle parking lot). In this case, the charging facility is for personal use only. On the other hand, the charging facility may be a facility where an unspecified number of vehicles can be used. When the power amount calculation device 10 is provided in a charging facility where an unspecified number of vehicles can be used, the power amount calculation device 10 receives identification information such as a vehicle ID from the vehicle and performs charging. Identify the vehicle. The charging facility may be a facility that stores electricity supplied from the power system and then supplies it to the vehicle, or a facility that supplies electricity supplied from the power system to the vehicle without storing it. Also good. The power amount calculation device 10 transmits the calculated vehicle supply power amount to the electricity rate calculation device 20.

  The electricity bill calculation device 20 calculates an electricity bill for the vehicle power supply amount received from the power amount calculation device 10. At this time, the electricity rate calculation device 20 calculates the electricity rate by a calculation method that suppresses the supply of electricity from the vehicle storing the electricity supplied from the power system to the facility outside the vehicle. This will be described later.

  The electricity bill calculation apparatus 20 transmits the calculated electricity bill to a billing computer (not shown) managed by the billing entity. The electricity bill calculation device 20 may be arranged at an arbitrary place. The electricity bill calculation device 20 may be realized by a billing computer (not shown) itself managed by an electric power company as a billing entity, or may be realized by a computer substantially equivalent to a billing computer.

  FIG. 2 is an explanatory diagram of an electricity supply mode between the facility outside the vehicle, the vehicle, and the power system.

  The electric power system F supplies electricity to the facility H outside the vehicle as indicated by an arrow R1. This supply mode is arbitrary, and other facilities may intervene. Similarly, the electric power system F supplies electricity to the vehicle V as indicated by an arrow R2. This supply mode is arbitrary, but typically includes a charging facility that can be used by an unspecified number of vehicles. The vehicle V supplies electricity to the facility H outside the vehicle as indicated by an arrow R3. In addition, this supply aspect is arbitrary and a cable and a charge / discharge control apparatus may intervene. The facility H outside the vehicle supplies electricity to the vehicle V as indicated by an arrow R4. In addition, this supply aspect is arbitrary and a cable and a charge / discharge control apparatus may intervene.

  In the example shown in FIG. 2, the second unit price is applied to the electricity supply R1 from the power system F to the facility H outside the vehicle. At this time, for the electricity supply R1 from the power system F to the vehicle facility H, the second unit price is applied by subtracting only the electricity supply R4 from the vehicle facility H to the vehicle V. This is because the electricity supply R4 from the vehicle facility H to the vehicle V is covered by electricity supplied from the power system F to the vehicle facility H. However, the electricity supply R4 from the off-vehicle facility H to the vehicle V can be executed using electricity generated by the off-vehicle facility H itself (for example, electricity generated by a solar panel) from the off-vehicle facility H to the vehicle V. Does not include supply. The electricity supply R4 from the vehicle facility H to the vehicle V and the electricity supply R3 from the vehicle V to the vehicle facility H are substantially exchanges of electricity within the consumer.

  Here, when the first unit price that is lower than the second unit price is uniformly applied to the amount of electricity related to the electricity supplied by the electricity supply R2 and the electricity supply R4, the electricity supply R3 to the facility H outside the vehicle is possible. Therefore, electricity to which the first unit price is applied can be used in the facility H outside the vehicle, and there is a possibility that the relationship between the second unit price and the first unit price is not appropriate.

  On the other hand, in the electric transfer suppression system 1 shown in FIG. 1, the electric supply R3 from the vehicle V to the facility H outside the vehicle is suppressed in the example shown in FIG. For example, the electricity rate calculation device 20 uses the second unit price or the second unit price for the amount of power related to the electric supply R3 out of the total amount of electric power related to the electric supply R2 and the electric amount related to the electric supply R4. The higher third unit price is applied, and the first unit price is applied to the remaining electric energy. Thereby, the electric supply R2 and the electric supply R4 for the electric supply R3 can be suppressed, and as a result, the electric supply R3 can be suppressed. Alternatively, when the total amount of power related to the electricity supply R2 and the amount of power related to the electricity supply R4 exceeds the threshold, the electricity rate calculation device 20 is the second higher than the first unit price for the excess amount. A unit price or a third unit price higher than the second unit price is applied, and the first unit price is applied only to the amount of power below the threshold. Thereby, it can suppress that electricity supply R2 and electricity supply R4 are performed more than necessary. As a result, the electric supply R2 and the electric supply R4 for the electric supply R3 can be suppressed, and consequently the electric supply R3 can be suppressed.

  In the example shown in FIG. 2, the electric supply R2 is considered, but a configuration not considering the electric supply R2 (see FIG. 3 and subsequent drawings) is also possible. For example, with regard to the electricity supply R2, there may be a case where liquidation is made at the first unit price or the like on the spot. In this case, the electricity rate calculation device 20 applies the second unit price or the third unit price higher than the second unit price to the amount of power related to the electricity supply R3 among the amount of electricity related to the electricity supply R4, and the remaining amount The first unit price is applied to the electric energy. Thereby, the electric supply R4 for the electric supply R3 can be suppressed, and as a result, the electric supply R3 can be suppressed. Alternatively, when the amount of power related to the electricity supply R4 exceeds the threshold, the electricity rate calculation device 20 sets the second unit price higher than the first unit price or the third unit price higher than the second unit price for the excess amount. And the first unit price is applied only to the amount of power below the threshold. Thereby, it can suppress that electric supply R4 is performed more than necessary. As a result, it is possible to suppress the electric supply R4 for the electric supply R3, and consequently to suppress the electric supply R3.

  In the example shown in FIGS. 1 and 2, the first unit price and / or the second unit price is assumed to be a constant unit price in a pay-as-you-go rate plan, but is a real unit price in a flat-rate plan. Also good. In the flat-rate rate plan, the real unit price applied to the electricity used in the vehicle only needs to be preferentially given over the actual unit price applied to the electricity used in the off-vehicle facility H. In addition, there are also charge plans based on a pay-per-use system, such as a charge plan in which the unit price increases stepwise as the amount of power used increases, or a charge plan in which the unit price is reduced in a specific time zone such as at night. Even in such a case, the above-described preconditions for the real unit price may be satisfied.

  FIG. 3 is a diagram illustrating an application example of the electrical transfer suppression system 1 in a power network. In FIG. 3, solid arrows indicate exchange of electricity, broken arrows indicate transmission of information by communication, and alternate long and short dash arrows indicate notification of billing contents (charged amount, etc.). The notification of the billing contents may be realized by electronic transmission, or may be realized by paper mail or the like. Further, the notification destination of the billing content may be a mobile terminal of a customer related to the off-vehicle facility H.

  The power network includes a power system F, an out-of-vehicle facility H, and a vehicle V. Here, it is assumed that the customer (owner) of the customer V and the vehicle V associated with the facility H outside the vehicle is the same. However, these two parties may be in the same relationship from the viewpoint of accounting for electricity charges. The number of out-of-vehicle facilities H and the number of vehicles V are arbitrary, but here, it is assumed that there is one out-of-vehicle facility H and one vehicle V in order to prevent the explanation from becoming complicated. Therefore, in the following, a specific one consumer will be described, but the same applies to other consumers.

  The power system F is a system that integrates power generation / transformation / transmission / distribution to supply electricity to the facility H outside the vehicle. With the liberalization of power, the system of the power system F may be changed to a mode in which electricity from any electric power supplier can be supplied to the facility H outside the vehicle. As described above, the facility H outside the vehicle is a facility for consumers of electric power. The facility H outside the vehicle includes a stationary power storage device 60 and an electric load 64. The stationary power storage device 60 may be disposed in the facility H outside the vehicle, or may be disposed outside the facility H outside the vehicle. The stationary power storage device 60 may be shared by a plurality of consumers. The electrical load 64 is an arbitrary electrical load that operates based on electricity supplied from the stationary power storage device 60. There are typically a plurality of electrical loads 64 for the facility H outside the vehicle. The electric load 64 is typically disposed in the vicinity of the vehicle facility H or the vehicle facility H outside the vehicle facility H. The vehicle V is a chargeable / dischargeable vehicle, and includes a chargeable / dischargeable power storage device 80.

  In the example illustrated in FIG. 3, the electric energy calculation device 10 of the electrical transfer suppression system 1 is provided in the charge / discharge control device 62. The functions of the charge / discharge control device 62 (and the power amount calculation device 10) are realized by one or more computers. In addition, the electricity bill calculation device 20 of the electricity transfer suppression system 1 is provided in the management center 70. The management center 70 includes, for example, a server 72 (see FIG. 9) as a billing computer managed by the electric utility as the billing entity. In this case, the function of the management center 70 (and the electricity bill calculation device 20) is realized by the server 72. The

  The charging / discharging control device 62 is provided in a charging facility under the control of a consumer. This charging facility is electrically connected to the stationary power storage device 60 under the control of the customer. The charging facility under the control of the customer is typically provided in the parking lot of the vehicle V or in the vicinity thereof. The charge / discharge control device 62 executes charge control for charging the vehicle V using electricity stored in the stationary power storage device 60 and discharge control for charging the stationary power storage device 60 using electricity stored in the vehicle V. To do. In the charging control, instead of or in addition to charging the vehicle V using the electricity stored in the stationary power storage device 60, the vehicle V is charged using the electricity supplied from the power system F directly. May be included. In addition, when the charge control is only to charge the vehicle V directly using electricity supplied from the power system F (that is, when the stationary power storage device 60 is not mediated), the stationary power storage device 60 in the facility H outside the vehicle is It may be omitted. In the discharge control, instead of or in addition to charging the stationary power storage device 60 using the electricity stored in the vehicle V, the electric load 64 of the facility H outside the vehicle is operated using the electricity stored in the vehicle V. May be included. When the discharge control is only to operate the electric load 64 of the vehicle facility H using the electricity stored in the vehicle V (that is, when the stationary power storage device 60 is not mediated), the stationary power storage device 60 in the vehicle facility H is used. May be omitted.

  The management center 70 may be, for example, an infrastructure managed by an electric power company contracted by a consumer, or an infrastructure managed by an electric power company contracted by a key house and a vehicle manufacturer. . The management center 70 holds in the server 72 customer information such as the contents of the contract between the customer and the electric utility, and the address of the customer.

  Hereinafter, a billing process for electricity supplied from one electric power company contracted by a consumer will be described. Regarding the amount of power supplied from this electric power company, the relationship between the first actual unit price for the amount of power used in the vehicle V and the second actual unit price for the amount of power used in the off-vehicle facility H is the premise of the above-described actual unit price. The condition shall be met. However, when a plurality of electric power companies have a specific relationship (for example, when they are related in terms of capital), the plurality of electric power companies may be regarded as “one electric power company”. In addition, when the consumer has contracted with a plurality of electric utilities satisfying the above-described assumption of the real unit price, the charging process described below may be executed for each electric utility. In addition, when the consumer contracts with a plurality of electric power providers that satisfy the above-mentioned assumption of the real unit price, the management center 70 may be provided for each specific electric power company, or all the electric power companies It may be a center that manages businesses in an integrated manner.

  FIG. 4 shows an example (Example 1) of a processing flow executed by the charge / discharge control device 62.

  In step 401, the charge / discharge control device 62 detects the connection of the vehicle V to the charging facility. The charge / discharge control device 62 may detect the connection of the vehicle V to the charging facility by detecting, for example, a cable connection to the vehicle V (for example, a CPLT (control pilot) signal). Alternatively, the charge / discharge control device 62 detects, for example, the connection of a cable to the vehicle V and receives identification information related to the vehicle V via the cable (that is, when the validity of the user is confirmed by authentication). In addition, the connection of the vehicle V to the charging facility may be detected. Note that the connection between the charging facility and the vehicle V may be other than a connection via a cable, and may be, for example, a non-contact mode. When the charging / discharging control device 62 does not detect the connection of the vehicle V to the charging facility, the charging / discharging control device 62 enters a detection waiting state for the connection of the vehicle V to the charging facility.

  In step 402, the charge / discharge control device 62 receives a charge / discharge request from the vehicle V side. The charge / discharge request is the one selected by the consumer among the charge request and the discharge request. For example, the charge / discharge control device 62 may detect a charge / discharge request based on an operation signal from an operation unit provided in the charging facility. In this case, the operation unit provided in the charging facility generates an operation signal (charge / discharge request) in response to an operation by a consumer. Alternatively, the charge / discharge control device 62 may receive a charge / discharge request via a cable. In this case, a control device (not shown) of the vehicle V generates a charge / discharge request in response to an operation by a consumer and transmits the request to the charge / discharge control device 62.

  In step 403, the charge / discharge control device 62 determines whether the charge / discharge request is a charge request or a discharge request. If the charge / discharge request is a charge request, the process flow in FIG. 4 proceeds to step 404, and if the charge / discharge request is a discharge request, the process flow in FIG. 4 proceeds to step 406.

  In step 404, the charge / discharge control device 62 executes charge control. The charge control is a process of charging the power storage device of the vehicle V using the electricity stored in the stationary power storage device 60 as described above. For example, the charge / discharge control device 62 performs charge control until a stop instruction is input or until the power storage device 80 of the vehicle V is in a predetermined state of charge (SOC).

  In step 405, when the charge / discharge control device 62 ends the charge control, the charge amount K1 [kWh] by the current charge control is calculated and stored.

  In step 406, the charge / discharge control device 62 performs discharge control. As described above, the discharge control is a process for charging the stationary power storage device 60 using the electricity stored in the power storage device 80 of the vehicle V. The charge / discharge control device 62 performs the discharge control until, for example, a stop instruction is input or the charge state of the power storage device 80 of the vehicle V reaches a predetermined lower limit value.

  In step 407, when the discharge control is finished, the charge / discharge control device 62 calculates and stores the discharge amount K2 [kWh] by the current discharge control.

  In step 408, the charge / discharge control device 62 calculates the vehicle power consumption K3 [kWh] for a predetermined period. The vehicle power consumption K3 in the predetermined period is a value obtained by subtracting an integrated discharge amount Kj that is an integrated value of the discharge amount K2 in the predetermined period from an integrated charge amount Ki that is an integrated value of the charge amount K1 in the predetermined period (= Ki). -Kj). The charge / discharge control device 62 calculates the vehicle power consumption K3 based on the calculation results of the above step 405 and step 407 in a predetermined period. The predetermined period depends on a billing system for electricity charges. For example, in the case of a standard monthly billing system, the predetermined period may be a period from one day to the last day. For this reason, the charge / discharge control device 62 may execute the process of step 408 separately from the processes of steps 401 to 407. That is, the charging / discharging control device 62 executes the processes of steps 402 to 407 each time the connection of the vehicle V to the charging facility is detected, and the steps 408 and 409 are performed each time a predetermined period elapses. These processes may be executed. In this case, after calculating the vehicle power consumption K3, the charge / discharge control device 62 clears the calculation results of the charge amount K1 and the discharge amount K2 used for the vehicle power consumption K3.

  In step 409, the charge / discharge control device 62 transmits the vehicle power consumption K3 calculated in step 408 to the management center 70. At this time, the charge / discharge control device 62 also transmits identification information that can identify the consumer of the vehicle V to the management center 70. The identification information is generated in advance in the charge / discharge control device 62 based on the customer input information or the manufacturer input information, and is associated with the customer information in the management center 70. The transmission from the charge / discharge control device 62 to the management center 70 may be realized using any wireless communication network, a wired communication path, or a combination thereof.

  According to the process shown in FIG. 4, the vehicle power consumption K <b> 3 used in the vehicle V among the power amounts supplied from the power system F to the facility H outside the vehicle can be calculated. As a result, the management center 70 can charge according to the vehicle power consumption K3 (see FIG. 5).

  In the process shown in FIG. 4, the charge / discharge control device 62 calculates the vehicle power consumption K3 in a predetermined period and transmits it to the management center 70. However, the charge / discharge control device 62 performs charge control or The charge amount K1 or the discharge amount K2 at the time of each control may be transmitted to the management center 70 every time the discharge control ends. In this case, the management center 70 may calculate the vehicle power consumption K3.

  In the process shown in FIG. 4, the charge / discharge control device 62 directly transmits the vehicle power consumption K3 to the management center 70. However, the charge / discharge control device 62 transmits the vehicle power consumption K3 to the communication device of the vehicle V. The power consumption K3 may be transmitted to the management center 70 via a communication device (for example, HEMS (Home Energy Management System)) in the facility H outside the vehicle. You may send it.

  4 is suitable when the first unit price is constant, but can also be applied when the first unit price fluctuates. For example, when the first unit price changes according to the use date and time, the charge / discharge control device 62 may transmit information regarding the use date and time to the management center 70 together with the vehicle power consumption K3.

  FIG. 5 shows an example of a processing flow executed by the management center 70 corresponding to the processing shown in FIG.

  In step 501, the management center 70 receives the vehicle power consumption K <b> 3 from the charge / discharge control device 62.

  In step 502, the management center 70 stores the vehicle power consumption K3 in a database (not shown). At this time, the management center 70 may store the vehicle power consumption K3 in association with the identification information of the customer.

  In step 503, the management center 70 applies the first unit price to the vehicle power consumption K3 to calculate an electricity bill for the vehicle power consumption K3 (the amount charged for the vehicle power consumption K3). When the first unit price is not constant, the management center 70 calculates the electricity rate for the vehicle power consumption K3 in consideration of the variation factor of the first unit price. In addition, the management center 70 applies the second unit price to the electric energy K4 [kWh] (hereinafter also referred to as “external electric energy K4”) used in the external facility H related to the consumer, and uses the external electric power. An electricity bill for the amount K4 (billed amount relating to the amount of electric power used outside the vehicle K4) is calculated. The management center 70 may calculate the in-vehicle power consumption K4 by subtracting the in-vehicle power consumption K3 from the total power K5 [kWh] supplied to the off-vehicle facility H related to the consumer. The total power amount K5 is the total power amount supplied to the off-vehicle facility H in a predetermined period, and the predetermined period is the same as the period related to the vehicle power consumption K3. The management center 70 adds the billing amount related to the vehicle power consumption K3 and the billing amount related to the vehicle power consumption K4 to calculate the billing amount for a predetermined period related to the consumer.

  The management center 70 may calculate the total power amount K5 in a predetermined period based on a reading value of a watt hour meter provided in the facility H outside the vehicle. In this case, the management center 70 may acquire the reading value of the watt hour meter through communication or may be acquired manually. When the second unit price is not constant, the management center 70 calculates a billing amount related to the power consumption K4 outside the vehicle in consideration of a variation factor (for example, use date and time) of the second unit price based on the customer information.

  In step 504, the management center 70 notifies the customer of the billing amount calculated in step 503. This notification may be realized by electronic transmission as described above, or may be realized by paper mail or the like. Further, the billing amount notification destination may be a consumer's mobile terminal, HEMS, vehicle V, or the like. A consumer's mobile terminal, HEMS, vehicle V, and the like have a screen for displaying the billing amount. For example, the vehicle-mounted device (not shown) of the vehicle V displays the amount billed on the display device in the vehicle based on the received information from the management center 70. The display mode of the billing amount is arbitrary, and for example, it may be a mode in which related information such as a breakdown, an unbilled amount (planned billing amount), and a fee plan can be displayed.

  According to the process shown in FIG. 5, the billing amount can be calculated by applying the first unit price only to the vehicle power consumption K3. Therefore, if the vehicle V is charged from the power system F via the vehicle facility H and then charged from the vehicle V to the vehicle facility H, then electricity is used in the vehicle facility H, the power used in the vehicle facility H The second unit price is applied to the quantity. Thereby, it becomes possible to suppress supplying electricity to the facility H outside the vehicle via the vehicle V. As a result, while maintaining a charge system that can promote the spread of the chargeable / dischargeable vehicle V, it is possible to suppress a decrease in consumers' power saving consciousness and power loss due to passing through the vehicle V.

  In the process shown in FIG. 5, the first actual unit price applied to the amount of power supplied from the electric power company and used in the vehicle V is the amount of billing related to the amount of used vehicle power K3. The value divided by K3 and corresponds to the first unit price. In addition, the second actual unit price applied to the amount of power supplied from the electric power company and used at the facility outside the vehicle is a value obtained by dividing the amount of money related to the amount of power used outside the vehicle K4 by the amount of energy used outside the vehicle K4. , Corresponding to the second unit price.

  In the process shown in FIG. 5, the integrated discharge amount Kj is charged in a form included in the outside electric power consumption K4. Therefore, the second unit price is applied for the integrated discharge amount Kj. However, the management center 70 may apply a third unit price higher than the second unit price to the integrated discharge amount Kj. In this case, the management center 70 may acquire information related to the integrated discharge amount Kj (or each discharge amount K2) from the charge / discharge control device 62 in addition to the vehicle power consumption K3. Further, the management center 70 applies the first unit price to the integrated discharge amount Kj of the electric power consumption K4 outside the vehicle until the integrated discharge amount Kj exceeds a predetermined value, and the integrated discharge amount Kj exceeds the predetermined value. In this case, the second unit price may be applied to the entire outside electric power consumption K4.

  Further, instead of the processing shown in FIG. 5, the management center 70 performs the ratio (or ratio) of the integrated discharge amount Kj to the integrated charge amount Ki, the ratio (or ratio) of the integrated discharge amount Kj to the total power amount K5, and the integration. In consideration of the size of the discharge amount Kj itself and the like, the applicable unit price for the vehicle power consumption K3 may be varied. For example, the management center 70 may add an extra charge in some form when the ratio of the accumulated discharge amount Kj to the accumulated charge amount Ki exceeds a predetermined threshold. For example, when the ratio of the cumulative discharge amount Kj to the cumulative charge amount Ki exceeds a predetermined threshold, the management center 70 similarly applies the first unit price only to the vehicle power consumption K3 and calculates the bill amount. May be. Alternatively, when the ratio of the cumulative discharge amount Kj to the cumulative charge amount Ki exceeds a predetermined threshold, the management center 70 supplies the amount of power (= total charge amount) supplied from the power system F to the vehicle V via the facility H outside the vehicle. A charge amount related to the integrated charge amount Ki may be calculated by applying the fourth unit price to Ki). The fourth unit price may be a fixed value that is higher than the first unit price and less than the second unit price, or may be a variable value corresponding to the ratio of the integrated discharge amount Kj to the integrated charge amount Ki. In this case, the management center 70 may calculate the remaining billing amount by applying the second unit price to the amount of power obtained by subtracting the accumulated charge amount Ki from the total amount of power K5. Then, the management center 70 may calculate the billing amount for a predetermined period related to the consumer by adding the billing amounts.

  In the process shown in FIG. 5, the management center 70 does not consider a charging mode (see the electric supply R2 in FIG. 2) that charges the vehicle V without using the charging / discharging control device 62, but this charging mode is used. It is also possible to consider. When payment (clearing) for the supplied power amount not via the charge / discharge control device 62 has not been completed, the management center 70 sets the supplied power amount not via the charge / discharge control device 62 separately from the vehicle power consumption amount K3. On the other hand, it may be charged by applying the first unit price. On the other hand, when the payment for the amount of power supplied without passing through the charge / discharge control device 62 has been completed, the management center 70 may not perform special processing. In addition, the management center 70 can acquire the information regarding the amount of supplied power without using the charge / discharge control device 62 and the information regarding the presence / absence of payment from, for example, a charging facility that has performed such charging.

  FIG. 6 shows another example of the processing flow executed by the charge / discharge control device 62 (Example 2).

  In step 601, the charge / discharge control device 62 detects the connection of the vehicle V to the charging facility, as in the process of step 401 in FIG.

  In step 602, the charge / discharge control device 62 receives a charge request from the vehicle V side. In addition, when the charge / discharge control apparatus 62 receives a discharge request | requirement, it performs discharge control similarly to the process of step 406 of FIG. 4 irrespective of the process flow of FIG. Note that the charging / discharging control device 62 is in a waiting state for receiving a charging request when the charging request is not received from the vehicle V side.

  In step 603, the charge / discharge control device 62 executes charge control, similar to the process in step 404 of FIG.

  In step 604, the charge / discharge control device 62 calculates an integrated charge amount Ki [kWh]. The integrated charge amount Ki is a value obtained by totaling the charge amount [kWh] in each charge control in a predetermined period. The predetermined period depends on a billing system for electricity charges. For example, in the case of a monthly billing system, it may be one month from a specific date. For this reason, the charge / discharge control device 62 may execute the process of step 604 separately from the processes of steps 601 to 603. That is, the charging / discharging control device 62 detects the connection of the vehicle V to the charging facility, executes charging control each time a charging request is received, and calculates and stores the charging amount in each charging control. The charge / discharge control device 62 calculates the integrated charge amount Ki by adding up the stored charge amount every time the predetermined period elapses. In this case, after calculating the integrated charge amount Ki, the charge / discharge control device 62 clears the charge amount in each charge control used for the integrated charge amount Ki.

  In step 605, the charge / discharge control device 62 transmits the accumulated charge amount Ki calculated in step 604 to the management center 70. At this time, the charge / discharge control device 62 also transmits identification information that can identify the consumer of the vehicle V to the management center 70.

  According to the process shown in FIG. 6, the integrated charge amount Ki charged in the vehicle V out of the amount of power supplied from the power system F to the facility H outside the vehicle can be calculated. As a result, the management center 70 can charge according to the accumulated charge amount Ki (see FIG. 7). In the example shown in FIG. 6, the integrated charge amount Ki corresponds to the amount of power supplied from the power system F to the vehicle V via the facility H outside the vehicle.

  In the process shown in FIG. 6, the charge / discharge control device 62 calculates the accumulated charge amount Ki for a predetermined period and transmits it to the management center 70, but the charge / discharge control device 62 ends the charge control. The charging amount may be transmitted to the management center 70 every time. In this case, the management center 70 may calculate the integrated charge amount Ki.

  In the process shown in FIG. 6, the charge / discharge control device 62 directly transmits the accumulated charge amount Ki to the management center 70, but the charge / discharge control device 62 transmits the accumulated charge amount Ki via the communication device of the vehicle V. The accumulated charge amount Ki may be transmitted to the management center 70 via a communication device in the facility H outside the vehicle.

  6 is suitable when the first unit price is constant, but can also be applied when the first unit price fluctuates. For example, when the first unit price changes according to the use date and time, the charge / discharge control device 62 may transmit information on the use date and time to the management center 70 together with the integrated charge amount Ki.

  FIG. 7 shows an example of a processing flow executed by the management center 70 corresponding to the processing shown in FIG. FIG. 8 is an explanatory diagram of FIG. 7 and shows a relationship between the unit price and the accumulated charge amount Ki. In the example shown in FIG. 8, when the integrated charge amount Ki exceeds a predetermined threshold C, the first unit price A is changed to the second unit price B.

  In step 701, the management center 70 receives the accumulated charge amount Ki from the charge / discharge control device 62.

  In step 702, the management center 70 determines whether or not the accumulated charge amount Ki has exceeded a predetermined threshold C [kWh]. If the management center 70 determines that the accumulated charge amount Ki has exceeded the predetermined threshold C, the process flow of FIG. 7 proceeds to step 704; otherwise, the process proceeds to step 703.

  In step 703, the management center 70 applies the first unit price to the accumulated charge amount Ki out of the total power amount K5 in a predetermined period, and charges the electricity charge for the accumulated charge amount Ki (the amount charged for the accumulated charge amount Ki). ) Is calculated.

  In step 704, the management center 70 sets the second unit price for the amount of power that exceeds a predetermined threshold C (hereinafter also referred to as “threshold super-power amount”) [kWh] of the accumulated charge amount Ki. Applying it, the electricity bill for the threshold super-power amount (the amount charged for the threshold super-power amount) is calculated. In addition, the management center 70 applies the first unit price to the power amount equal to or less than the predetermined threshold C (hereinafter also referred to as “threshold power amount”) [kWh] of the accumulated charge amount Ki, and the threshold power The electricity bill for the amount (the amount charged for the threshold power amount) is calculated.

  In step 705, the management center 70 calculates a billing amount for a predetermined period related to the consumer. Specifically, the management center 70 applies the second unit price to the electric power consumption K4 used outside the vehicle H related to the consumer, and calculates the amount charged for the electric power consumption K4 outside the vehicle. At this time, the management center 70 may calculate the power consumption K4 outside the vehicle by subtracting the integrated charge amount Ki from the total power amount K5 supplied to the facility H outside the vehicle related to the consumer. In the case of going through the above step 703, the management center 70 adds the billing amount related to the integrated charge amount Ki calculated in the above step 703 and the billing amount related to the electric power consumption K4 outside the vehicle, and adds a predetermined amount related to the consumer. Calculate the amount billed for the period. In the case of passing through step 704, the management center 70 charges the amount related to the integrated charge amount Ki (the sum of the amount charged for the threshold super-power amount calculated in step 704 and the amount charged for the threshold power amount). And the billing amount related to the electric energy used outside the vehicle K4 are added together to calculate the billing amount for a predetermined period related to the consumer.

  In step 706, the management center 70 notifies the customer of the amount billed calculated in step 705. This notification may be realized by electronic transmission as described above, or may be realized by paper mail or the like. Further, the billing amount notification destination may be a consumer's mobile terminal, HEMS, vehicle V, or the like.

  According to the process shown in FIG. 7, the billing amount can be calculated by applying the first unit price only to the power amount (threshold power amount) equal to or less than the predetermined threshold C in the integrated charge amount Ki. Therefore, if the vehicle V is charged from the electric power system F via the facility H outside the vehicle exceeding the threshold power amount, the second power is supplied to the power amount exceeding the threshold power amount (threshold super-power amount). Unit price is applied. As a result, it is possible to suppress supplying an unnecessarily large amount of power to the facility H outside the vehicle via the vehicle V. As a result, while maintaining a charge system that can promote the spread of the chargeable / dischargeable vehicle V, it is possible to suppress a decrease in consumers' power saving consciousness and power loss due to passing through the vehicle V.

  In the process shown in FIG. 7, the first actual unit price applied to the amount of power supplied from the electric power company and used in the vehicle V is when electricity is not supplied from the vehicle V to the facility H outside the vehicle. Is a value obtained by dividing the billing amount related to the accumulated charge amount Ki by the accumulated charge amount Ki. The second real unit price applied to the amount of power supplied from the electric power company and used in the facility outside the vehicle is the amount of power used outside the vehicle K4 when electricity is not being supplied from the vehicle V to the facility H outside the vehicle. This is a value obtained by dividing the amount of billing related to by the amount of electric power K4 used outside the vehicle. On the other hand, when electricity is supplied from the vehicle V to the facility H outside the vehicle, the actual unit price changes accordingly. This is because, when electricity is supplied from the vehicle V to the facility H outside the vehicle, the actual power consumption outside the vehicle is larger than the value of the power consumption K4 outside the vehicle. Further, when electricity is supplied from the vehicle V to the facility H outside the vehicle, the actual amount of electric power used by the vehicle is smaller than the integrated charge amount Ki. However, also in this case, since the second unit price is higher than the first unit price, the state in which the above-described precondition for the actual unit price is satisfied is maintained.

  In the process shown in FIG. 7, the management center 70 applies the second unit price for the threshold super-power amount, but applies a third unit price higher than the second unit price for the threshold super-power amount. It is good. In this case, the third unit price may be set in such a manner that the state satisfying the above-described precondition for the actual unit price is maintained.

  In the process shown in FIG. 7, the vehicle exterior power consumption K4 is calculated by subtracting the integrated charge amount Ki from the total power amount K5 supplied to the vehicle exterior facility H as a consumer as described above. Therefore, when electricity is supplied from the vehicle V to the facility H outside the vehicle, the actual power consumption outside the vehicle is larger than the value of the power consumption K4 outside the vehicle. Therefore, as long as the accumulated charge amount Ki does not exceed the predetermined threshold C, the first fee is also applied to the amount of power supplied from the vehicle V to the facility H outside the vehicle (a part of the actual amount of power used outside the vehicle). It will be. On the other hand, when the accumulated charge amount Ki exceeds a predetermined threshold value C, the threshold value is considered in consideration that there is a high possibility that the electric energy supplied from the vehicle V to the vehicle facility H is included in the electric energy used outside the vehicle K4. The second unit price is applied to the amount of super power. The predetermined threshold C may be an arbitrary value, but preferably corresponds to the accumulated charge amount when it is considered that the amount of power supplied from the vehicle V to the off-vehicle facility H is high from this viewpoint. However, it may be adapted by actual conditions or tests. Further, the predetermined threshold C may be defined by, for example, a rate plan that contracts between an electric power company and a consumer.

  In the process shown in FIG. 7, when the integrated charge amount Ki exceeds a predetermined threshold C during a predetermined period, the management center 70 may notify the customer to that effect. In this case, the management center 70 may notify the charge / discharge control device 62 that the accumulated charge amount Ki has exceeded a predetermined threshold C during a predetermined period. Alternatively, the management center 70 receives the accumulated charge amount Ki at that time from the charge / discharge control device 62 periodically or irregularly during a predetermined period, and the accumulated charge amount Ki exceeds a predetermined threshold C. Moreover, it is good also as notifying a consumer to that effect. Thereby, the consumer can grasp in advance that the second unit price is applied to the electricity supplied from the off-vehicle facility H to the vehicle V.

  In the process shown in FIG. 7, when the accumulated charge amount Ki exceeds a predetermined threshold C (= threshold power amount), the power amount exceeding the threshold power amount (threshold super power amount) The second unit price is applied. However, equivalently, when the charge calculated by applying the first price to the accumulated charge amount Ki exceeds a predetermined threshold, the management center 70 sets the accumulated charge amount Ki for the amount exceeding the predetermined threshold. On the other hand, the second unit price may be applied and recalculated. Alternatively, when the accumulated charge amount Ki exceeds a predetermined threshold C (= threshold power amount), the management center 70 applies the fifth unit price to the entire accumulated charge amount Ki and relates to the accumulated charge amount Ki. A billing amount may be calculated. The fifth unit price is higher than the first unit price and lower than the second unit price, and may be a fixed value, or may be a variable value according to the relationship between the accumulated charge amount Ki and a predetermined threshold C.

  In the process shown in FIG. 7, the management center 70 does not consider a charging mode (see the electric supply R <b> 2 in FIG. 2) that charges the vehicle V without using the charging / discharging control device 62. It is also possible to consider. When payment (clearing) for the supplied power amount not via the charge / discharge control device 62 is not completed, the management center 70 adds the supplied power amount not via the charge / discharge control device 62 to the integrated charge amount Ki. The processing after step 702 may be executed. On the other hand, when the payment for the power supply amount not via the charge / discharge control device 62 has been completed, the management center 70 adds the power supply amount not via the charge / discharge control device 62 and executes the processing of step 702. However, in step 705, a charge obtained by applying the first unit price to the amount of power supplied without using the charge / discharge control device 62 may be reduced from the amount charged. In addition, the management center 70 can acquire the information regarding the amount of supplied power without using the charge / discharge control device 62 and the information regarding the presence / absence of payment from, for example, a charging facility that has performed such charging.

  FIG. 9 is a diagram illustrating a detailed configuration example of the facility H outside the vehicle of the customer. In FIG. 9, related configurations other than the facility H outside the vehicle (for example, the management center 70 and the vehicle V) are also illustrated. In FIG. 9, a solid connection line represents a power line connection, and a broken connection line represents a communication line connection. However, the communication line may include a wireless communication network. In the example shown in FIG. 9, the facility H outside the vehicle is in the form of a house (house).

  As shown in FIG. 9, the facility H outside the vehicle includes a photovoltaic power generation device 600, a distribution board 602, a HEMS 604, and a fuel cell 606 in addition to the stationary power storage device 60, the charge / discharge control device 62 and the electric load 64. The facility H outside the vehicle may include a heat pump type hot water supply device (for example, Ecocute (registered trademark)) that supplies hot water using nighttime power.

  The solar power generation device 600 includes a solar panel and converts solar energy into electric power. The distribution board 602 supplies electricity supplied from the power system F, the solar power generation device 600, the stationary power storage device 60, and the fuel cell 606 to each of the electric loads 64 of the facility H outside the vehicle, the charge / discharge control device 62, the HEMS 604, and the like. To distribute. The HEMS 604 itself forms an electrical load, but here it is distinguished from the electrical load 64.

  The fuel cell 606 is a device that extracts hydrogen from gas and converts it into electric power. The fuel cell 606 may be, for example, ENE-FARM (registered trademark).

  The HEMS 604 includes a display (not shown) that realizes, for example, energy visualization. The HEMS 604 performs automatic control of the electric load 64 for efficiently using electricity in cooperation with the solar power generation device 600 and the stationary power storage device 60.

  In the example shown in FIG. 9, the charging route for the vehicle V uses electricity generated by another power supply device in addition to the first route for charging the vehicle V using electricity supplied from the power system F. There is a charging route for charging the vehicle V. Specifically, the charging route from another power supply device uses the second route for charging the vehicle V using the electricity generated by the photovoltaic power generation device 600 and the electricity generated by the fuel cell 606. A third route for charging the vehicle V. Here, as described above, the electricity to be transferred from the vehicle V to the facility H outside the vehicle is electricity supplied to the vehicle V on the first route from the first route to the third route. . Therefore, the charge / discharge control device 62 may consider only the amount of charge when charging the vehicle V on the first route in the process shown in FIG. 4 or FIG. For example, the charge / discharge control device 62 may determine whether the vehicle V is charged by the first route or the vehicle V is charged by another route based on information from the HEMS 604. Specifically, for example, in the process of FIG. 4, the charge / discharge control device 62 uses the charge amount K1 calculated in step 405 when charging the vehicle V on the first route as the vehicle power consumption K3 in step 408. On the other hand, the charging amount K1 calculated in step 405 when charging the vehicle V by a route other than the first route may not be used for calculating the vehicle power consumption K3 in step 408. In this case, the vehicle power consumption to which the first unit price is applied is a value that does not include the accumulated charge amount when the vehicle V is charged by a route other than the first route. It should be noted that such processing considering the charging route may be executed on the management center 70 side at the billing stage. For example, in the process of FIG. 6, the charge / discharge control device 62 uses the charge amount K1 calculated when charging the vehicle V in the first route to calculate the integrated charge amount Ki in step 604. The charge amount K1 calculated when charging the vehicle V by a route other than the above may not be used for calculating the integrated charge amount Ki in step 604. In this case, the accumulated charge amount Ki transmitted to the management center 70 is a value that does not include the accumulated charge amount when the vehicle V is charged by a route other than the first route. Similarly, the process considering the charging route may be executed on the management center 70 side at the billing stage.

  Although each embodiment has been described in detail above, it is not limited to a specific embodiment, and various modifications and changes can be made within the scope described in the claims. It is also possible to combine all or a plurality of the components of the above-described embodiments.

  For example, in each of the above-described embodiments, the above-described suppression may be prohibited in special cases such as at the time of a disaster or at the peak of power demand.

DESCRIPTION OF SYMBOLS 1 Electric transfer control system 10 Electricity amount calculation apparatus 20 Electricity charge calculation apparatus 70 Management center

Claims (4)

An electric energy calculation device for calculating the amount of electric power supplied from an electric company to a chargeable / dischargeable vehicle;
The first real unit price applied to the amount of power supplied from the electric utility and used in the vehicle is applied to the amount of electric power supplied from the electric utility and used in the facility outside the vehicle. In a calculation method that suppresses the supply of electricity from the vehicle that stores electricity supplied from the electric utility to the facility outside the vehicle under a charge system that is lower than the second actual unit price, An electricity transfer suppression system including an electricity charge calculation device for calculating a charge.   The electricity bill calculation device applies a first unit price corresponding to the first actual unit price to the amount of power used in the vehicle out of the supplied power amount, while being supplied from the vehicle to the facility outside the vehicle. 2. The electric transfer suppression system according to claim 1, wherein a unit price corresponding to the second real unit price and higher than the first unit price is applied to the power amount.   The electricity bill calculation device applies a first unit price corresponding to the first actual unit price to an amount of power that is equal to or less than the threshold among the amount of supplied power when the amount of supplied power exceeds a threshold value. The electric transfer suppression system according to claim 1, wherein a second unit price higher than the first unit price and equal to or higher than the second actual unit price is applied to the amount of power exceeding the threshold. The power amount calculation device is provided in a charge / discharge control device that controls the exchange of electricity between the vehicle and the facility outside the vehicle, and is supplied to the vehicle from the electric utility via the charge / discharge control device. Calculating the amount of power and the amount of power supplied from the vehicle to the facility outside the vehicle via the charge / discharge control device;
The electric charge calculation device is configured to supply electric power supplied from the vehicle to the facility outside the vehicle through the charge / discharge control device out of electric power supplied from the electric utility to the vehicle through the charge / discharge control device. The electric transfer suppression system according to claim 2, wherein the second unit price is applied to a quantity, and the first unit price is applied to a remaining power amount.

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