JP2021077429A - Power asset management system and power asset management method - Google Patents

Abstract

To provide a power asset management system and a power asset management method which can promote efficient use of surplus electricity caused by renewable energy at low cost through an electric vehicle.SOLUTION: In a power asset management system 10, an information processing apparatus (an on-vehicle terminal 100) includes an arithmetic unit 130 that executes: a process of generating positive power asset information by applying predetermined algorithm to a value of an amount of power sold to a grid of an amount of power generated at a predetermined facility to store the positive power asset information in a storage device that is attached to an electric automobile of the facility or is held by a user of the electric automobile; a process of generating negative power asset information by applying the predetermined algorithm to a value of an amount of electricity purchased which is charged in the electric automobile at another to store the negative power asset information in the storage device 120; and a process of generating information on net power assets by performing offset processing between positive and negative power assets to store the information on the net power assets in the storage device.SELECTED DRAWING: Figure 1

Description

The present invention relates to a power asset management system and a power asset management method.

The introduction of solar power generation systems, etc. has increased significantly due to the feed-in tariff (so-called FIT), which was enforced with the main purpose of popularizing power generation using renewable energy. On the other hand, some households whose purchase period under this system has expired, that is, graduated FIT households, are beginning to appear, and electric power companies are also presenting the purchase price of surplus electricity generated in each household. In other words, the graduate FIT sales battle is in full swing.

There are two main uses for the surplus electricity generated by such graduation FIT. That is, selling electricity to a retail electric power company, or self-consumption by storing electricity in a power storage facility (eg, daytime operation type EcoCute, storage battery) installed at home or in an electric vehicle.

As a conventional technique for managing such surplus electric power, for example, a plurality of demands are used for the purpose of reducing unfairness when buying and selling electric power between a business operator and a plurality of consumers with a simple configuration. A plurality of power supply devices of a consumer aggregate consisting of a house, a first power sale detection unit that detects electric power sold from the plurality of power supply devices to a business operator different from the consumer aggregate, and the above. A power supply system (see Patent Document 1) including a first power purchase detection unit that detects power purchased by a plurality of consumers from the business operator has been proposed.

Further, for the purpose of providing an energy management system capable of preventing excess power from being wasted, a fuel cell, an inverter that converts a DC voltage from the fuel cell into an AC voltage, and a storage battery are provided. Optimization calculation of the prediction unit that predicts the energy demand in the building and the operation schedule of the fuel cell, the inverter, and the storage battery with the function of the energy balance in the building as the degree of conformity based on the predicted energy demand. (Refer to Patent Document 2 of the energy management system, which includes a fuel cell, an inverter, and a control unit for controlling the storage battery based on the calculated operation schedule) has also been proposed. There is.

JP-A-2017-163746 JP-A-2017-229233

On the other hand, the electric vehicle, which is the target of electricity storage, has been widely used as a next-generation vehicle due to rapid development in the automobile industry and the IT industry. In other words, it is expected that the number of cases in which such electric vehicles are used as storage targets will increase in the future.

Here, the merits of using an electric vehicle as the storage target for the surplus power of renewable energy will be shown as follows. 2. Supplement the electric power required to drive an electric vehicle (reduce the electricity bill for driving). 2. Suppress the increasing demand for electric power due to the increase in electric vehicles. 3. Suppress the deterioration of the supply-demand balance due to the increase in power generation from renewable energy (reduce the load on the grid). Contribution to a low-carbon society (reduction of fossil fuel consumption due to reduction of gasoline and diesel vehicles) 5. Electric vehicles can be used as an emergency power source.

Then, if an electric vehicle having such many merits is purchased by a graduated FIT household and, for example, the surplus electric power generated by the home photovoltaic power generation system is stored in the electric vehicle, there is a problem from another viewpoint. As a result, it hinders the introduction of electric vehicles.

These issues are: 1. The surplus electricity when using an electric vehicle (when going out from home with an electric vehicle) is sold at a low purchase unit price set by the retail electric power company, and it is difficult to enjoy the economic merit. Charging an electric vehicle on the go (eg charging at a supermarket or parking lot) is done with electricity purchased at a market price (sales unit price) higher than the above-mentioned purchase unit price, rather than charging at home. The cost will increase.

Without solving the above problems, the surplus power is charged to an external device, that is, sold, and the power is purchased from such an external device at the user's convenience as needed to charge its own electric vehicle. If done, the user may have a low or low level of financial benefit, or may be economically negative.

In addition, in order to perform such an operation, it is necessary to centrally manage each player such as each user, retail electric power company, and charging equipment in the city, and centrally manage information on power sales / purchase of each electric vehicle. Come on. In that case, an exclusive and centralized environment may be created in which only those who can / can contract with the business operator responsible for the operation can participate. It will be difficult to introduce electric vehicles as storage targets and widely promote the storage and utilization of surplus electricity generated by renewable energy at low cost.

Therefore, an object of the present invention is to provide a technique capable of promoting efficient use of surplus electric power caused by renewable energy at low cost through an electric vehicle.

The electric power asset management system of the present invention that solves the above problems applies a predetermined algorithm to the value of the amount of electricity generated in a predetermined facility and sells electricity to the grid to generate positive power asset information, and the power asset management system of the facility A predetermined algorithm is applied to the value of the amount of power purchased incidental to the electric vehicle or stored in the storage device held by the user of the electric vehicle and the amount of power purchased in the electric vehicle at another facility other than the facility, and is negative. The process of generating the information of the electric power asset and storing it in the storage device and the offset process between the positive and negative electric power assets are performed to generate the information of the electric power net asset, and the information of the electric power net asset is stored in the storage. It is characterized by including a process stored in the device and an information processing device including an arithmetic device for executing the process.

Further, in the above-mentioned electric power asset management system, when the electric vehicle is charged at the other facility, the arithmetic unit uses the information of the positive electric power asset held in the storage device or the information of the net electric power as the settlement fund. The process of appropriating the charging charge for charging is further executed, and the algorithm is applied to the value of the power asset subtracted by the appropriation process to generate new positive or negative power asset information. , It may be stored in the storage device.

Further, in the above-mentioned electric power asset management system, the arithmetic device uses the algorithm as the unit price for purchasing electric power from the facility and the unit price for charging the electric power at the other facility, which is predetermined or acquired from a predetermined business operator. Based on this, the amount of electricity sold from the facility and the amount of electricity purchased at the other facility are calculated, and the algorithm is applied to the value of the amount obtained in the calculation to generate information on electric power assets. It may be a thing.

Further, in the above-mentioned electric power asset management system, when the calculation device is a business operator whose purchase destination of the electric power for the sale of electric power and the electric power sale source of the electric power for charging to the electric vehicle are different, the above-mentioned algorithm is used. The positive power asset is calculated by calculating the purchase price of electricity for the electricity sold based on the purchase unit price obtained from the purchaser, and applying the algorithm to the value of the purchase price obtained in the calculation. The above information is generated, the purchase price of the charging power is calculated based on the charging unit price obtained from the business operator of the power selling source, and the algorithm is applied to the value of the power purchase price obtained by the calculation. It may be said that the information of the negative electric power asset is generated.

Further, in the above-mentioned electric power asset management system, when the value of the electric power net asset is a negative value, the arithmetic unit may output as loan information of the electric power asset.

Further, in the above-mentioned electric power asset management system, when the facility or the electric vehicle charges the other facility or another electric vehicle, the arithmetic device applies the algorithm to the charge amount to obtain the above-mentioned. When positive power asset information is generated and stored in the storage device and the electric vehicle is charged by another electric vehicle, the algorithm is applied to the charge amount to apply the negative power asset information. May be generated and stored in the storage device.

Further, in the power asset management method of the present invention, the information processing apparatus applies a predetermined algorithm to the value of the amount of power sold to the grid among the amount of power generated in the predetermined facility to generate positive power asset information. A predetermined algorithm is applied to the process of being attached to the electric vehicle of the facility or stored in the storage device held by the user of the electric vehicle and the value of the amount of power purchased for charging the electric vehicle at another facility other than the facility. The process of generating the information of the negative electric power asset and storing it in the storage device and the offset processing between the positive and the negative electric power assets are performed to generate the information of the net electric power asset, and the information of the net electric power asset is obtained. It is characterized by executing the process of storing in the storage device.

Further, in the electric power asset management method of the present invention, when the electric vehicle is charged at the other facility, the information processing device settles the positive electric power asset information or the electric power net asset information held by the storage device. The process of allocating the charge to the charge for charging as funds is further executed, and the algorithm is applied to the value of the electric power asset subtracted by the process of allocation to obtain new positive or negative electric power asset information. It may be generated and stored in the storage device.

Further, in the electric power asset management method of the present invention, the information processing apparatus purchases electric power from the facility and charges associated with charging at the other facility, which is predetermined as the algorithm or acquired from a predetermined business operator. Based on the unit price, the amount of electricity sold from the facility and the amount of electricity purchased at the other facility are calculated, and the algorithm is applied to the value of the amount obtained in the calculation to obtain information on electric power assets. It may be generated.

Further, in the electric power asset management method of the present invention, when the information processing device is a business operator whose purchase source of electric power for the electric power sale and the electric power sales source for charging electric power to the electric vehicle are different, the algorithm is used. By calculating the purchase price of the electricity for the sale of electricity based on the purchase unit price obtained from the business of the purchase destination and applying the algorithm to the value of the purchase price obtained by the calculation, the positive Generates information on electric power assets, calculates the purchase price of the charged power based on the charge unit price obtained from the business operator of the power seller, and applies the algorithm to the value of the power purchase price obtained in the calculation. By doing so, the information on the negative electric power assets may be generated.

Further, in the electric power asset management method of the present invention, when the value of the electric power net asset is a negative value, the information processing apparatus may output as loan information of the electric power asset.

Further, in the power asset management method of the present invention, when the information processing device charges the facility or the electric vehicle to the other facility or another electric vehicle, the algorithm is applied to the charge amount. When the information of the positive electric power asset is generated and stored in the storage device, and the electric vehicle is charged by another electric vehicle, the algorithm is applied to the charge amount of the negative electric power asset. Information may be generated and stored in the storage device.

According to the present invention, efficient use of surplus electric power due to renewable energy can be promoted at low cost through an electric vehicle.

It is a figure which shows the configuration example of the electric power asset management system of this embodiment. It is a figure which shows the configuration example of the asset management DB in this embodiment. It is a figure which shows the composition example of the electric power net asset information in this embodiment. It is a figure which shows the structural example of the trading management information in this embodiment. It is a figure which shows the flow example 1 of the electric power asset management method of this embodiment. It is a figure which shows the screen example 1 of this embodiment. It is a figure which shows the screen example 2 of this embodiment. It is a figure which shows the screen example 3 of this embodiment. It is a figure which shows the screen example 4 of this embodiment. It is a figure which shows the screen example 5 of this embodiment.

<Outline of the invention>
As already mentioned, there are two main uses for the surplus electricity generated by the graduate FIT. That is, selling electricity to a retail electric power company, or self-consumption by storing electricity in a power storage facility (eg, daytime operation type EcoCute, storage battery) installed at home or in an electric vehicle.

On the other hand, if a graduated FIT household purchases an electric vehicle that has many merits, and for example, the surplus electricity generated by a household photovoltaic power generation system is stored in the electric vehicle, there is a problem from another viewpoint. Can result in hindering the introduction of electric vehicles.

These issues are: 1. The surplus electricity when using an electric vehicle (when going out from home with an electric vehicle) is sold at a low purchase unit price set by the retail electric power company, and it is difficult to enjoy the economic merit. Charging an electric vehicle on the go (eg charging at a supermarket or parking lot) is done with electricity purchased at a market price (sales unit price) higher than the above-mentioned purchase unit price, rather than charging at home. The cost will increase.

Without solving the above problems, the surplus power is charged to an external device, that is, sold, and the power is purchased from such an external device at the user's convenience as needed to charge its own electric vehicle. If done, the user may have a low or low level of financial benefit, or may be economically negative.

In addition, in order to perform such an operation, it is necessary to centrally manage each player such as each user, retail electric power company, and charging equipment in the city, and centrally manage information on power sales / purchase of each electric vehicle. Come on. In that case, an exclusive and centralized environment may be created in which only those who can / can contract with the business operator responsible for the operation can participate. It will be difficult to introduce electric vehicles as storage targets and widely promote the storage and utilization of surplus electricity generated by renewable energy at low cost.

Therefore, in the present invention, for example, of the electric power generated by the solar power generation system or the like in each household, the surplus electric power information not used in the household is subjected to the encryption process to generate positive electric power asset information. When the information on the positive power assets is stored in a storage device (eg, IC chip of an ETC card) provided in the electric vehicle of the household, and the above-mentioned electric vehicle receives a charging service at a store or parking lot in the city. , The information on the amount of charge in such stores is encrypted to generate the information on the negative power assets, and the information on the negative power assets is stored in the storage device of the electric vehicle, and the positive and negative power assets are stored. The information of each electric power asset is decrypted and offset processing is performed between each value to calculate the electric power net asset, and the encryption processing is applied to the electric power net asset to generate the electric power net asset information, and the electric power net asset The information is stored in the storage device of the electric vehicle described above.

According to such a configuration, efficient use of surplus electricity generated by renewable energy can be promoted at low cost through an electric vehicle.

<Network configuration>
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a network configuration diagram including the electric power asset management system 10 of the present embodiment. The electric power asset management system 10 shown in FIG. 1 is a computer system that enables efficient use of surplus electric power due to renewable energy to be promoted at low cost through an electric vehicle.

Such an electric power asset management system 10 can be composed of, for example, a household terminal 50, an in-vehicle terminal 100 (information processing device) of an electric vehicle, a retail electric power company system 200, and a charging equipment system 300. Of course, the system configuration is not limited to this form. For example, instead of the in-vehicle terminal 100, it is possible to assume that a smartphone owned by the user of the electric vehicle is adopted as the information processing device.

Further, the electric power asset management system 10 of the present embodiment includes the above-mentioned household terminal 50, in-vehicle terminal 100, retail electric power company system 200, and charging equipment system 300 via a network 1 such as the Internet or an appropriate leased line. They are connected and configured to communicate with each other.

Among the above-mentioned system configurations, the household terminal 50 is a terminal provided in the household in which the user of the above-mentioned electric vehicle resides, and is, for example, a photovoltaic power generation system and a grid power source (powered by a retail electric power company) provided in the household. It is possible to imagine a switchboard (holding an information processing function) between (commercial power sources). It is assumed that the household terminal 50 can communicate with the in-vehicle terminal 100 of the electric vehicle parked on the premises of the household with respect to the sales management information 5 via the home network (eg, a lamp line network, a wireless LAN, etc.).

The above-mentioned sales management information 5 corresponds to information on the power purchased by the household from the grid power source, information on selling surplus power among the amount of power generated by the photovoltaic power generation system, and the like.

In this household, solar power, which is a renewable energy source, is used to generate electricity in a photovoltaic power generation system, and this power is used for general self-consumption and also as a power source for electric vehicles. Of course, there may be a situation where the amount of power generated by such a photovoltaic power generation system cannot cover all the power consumption of the household, and in that case, the power is supplied from the grid power source as before.

Further, the in-vehicle terminal 100 is an in-vehicle terminal of an electric vehicle managed by the above-mentioned user, and as an example, an ETC terminal that reads an ETC card 165 and performs payment processing at an ETC gate is assumed. The in-vehicle terminal 100 corresponds to an information processing device that mainly constitutes the electric power asset management system of the present embodiment. Further, it is assumed that it is possible to communicate with the household terminal 50 and the charging equipment system 300 using its own communication device 110 and via the network 1 and the above-mentioned home network. A specific example of the hardware configuration and database of the in-vehicle terminal 100 will be described later.

Further, the retail electric power company system 200 is a system operated by each retail electric power company (retail electric power company A and retail electric power company B in the figure), and a server device is assumed as an example. Further, the retail electric power company system 200 transmits the electric power generated by the renewable energy in the household where the electric vehicle equipped with the above-mentioned in-vehicle terminal 100 is normally located, that is, the household where the user of the electric vehicle is located, through the grid. The process of accepting and purchasing electricity at a predetermined purchase unit price, and conversely, the process of supplying power to the household (or electric vehicle) through the grid and selling the electricity at the selling unit price are executed.

The retail electric power company system 200 notifies the household terminal 50, that is, the switchboard, of the information, that is, the sales management information 5, in accordance with the power supply to the household and the purchase of power from the household.

In addition, the charging equipment system 300 manages charging equipment for electric vehicles installed in stores such as supermarkets and convenience stores in the city, gas stations on highways and general roads, parking lots, car dealers, and public facilities. As an example, a server device is assumed.

The charging equipment system 300 manages information on the amount of power supplied (or information on purchasing power from the electric vehicle), that is, sales management information 5, as the charging equipment supplies power (charges) to the electric vehicle. It is a device that can notify the in-vehicle terminal 100 of the electric vehicle. Therefore, it is assumed that the charging equipment system 300 is communicably connected to, for example, the in-vehicle terminal 100 of the electric vehicle via a power supply cable.

<Hardware configuration>
Subsequently, among the devices constituting the power asset management system 10, the hardware configuration of the in-vehicle terminal 100 will be described with reference to FIG.

The vehicle-mounted terminal 100 in the present embodiment includes a communication device 110, a storage device 120, an arithmetic device 130, an input device 140, an output device 150, and a card reader 160.

Of these, the communication device 110 is connected to an appropriate network 1 such as a mobile phone network, a public wireless LAN, and a home lamp line network, and is responsible for communication processing with an external device such as a household terminal 50 and a charging equipment system 300.

Further, the storage device 120 is a storage means composed of an appropriate non-volatile storage element such as a hard disk drive or SSD (assuming that the concept of the storage device 120 includes a so-called memory configuration such as a RAM of a volatile storage element). May be good).

Further, the arithmetic unit 130 is, for example, a processor that reads and executes a program 121 held in the storage device 120, performs integrated control of the apparatus itself, and performs various determinations, arithmetic operations, and control processes.

In the storage device 120, an algorithm for generating information on electric power assets by applying it to trading management information 5 in a program 121 for implementing a function required as an in-vehicle terminal 100 in the electric power asset system 10 of the present embodiment. As a result, the encryption program 122 is held.

Further, the information of the electric power asset generated by the above-mentioned encryption program 122 is stored in the asset management DB 170 in the IC chip of the ETC card 165 via the card reader 160. In addition, the ETC card 165 also stores the electric power net asset information 171 generated based on the positive and negative electric power net assets information. The details of the data structure of the asset management DB 170 and the net electric power asset information 171 will be described later. However, such a storage form is an example, and may be stored in a secure storage area provided in advance in the storage device 120.

Further, the input device 140 is an interface for receiving an input operation by the user of the in-vehicle terminal 100, and includes various buttons, a keyboard, a mouse, a microphone, and the like.

Further, the output device 150 is an interface for outputting the processing result of the arithmetic unit 130, and includes a display, a speaker, and the like.

<Example of data structure>
Next, an example of a data structure in the database used by the in-vehicle terminal 100 in the power asset management system 10 of the present embodiment will be described. FIG. 2 is a diagram showing a configuration example of the asset management DB 170 in the present embodiment.

This asset management DB 170 is a database that stores information on positive and negative electric power assets generated for electric vehicles. More specifically, the data structure of the asset management DB 170 includes, for example, the ID of the electric vehicle, the user ID that uniquely identifies the user, and the electric vehicle as information on the electric power assets generated on the date, using the date as a key. Own facility ID that uniquely identifies the facility where the electric vehicle is located on a daily basis, the ID of another facility where the electric vehicle is charged, the ID of the retail electric power company that sold the surplus electricity of the own facility, and the positive and negative of the electric power assets It is a collection of records associated with values such as, and information on the electric power asset.

Of these, the information on the electric power assets indicates the value of the purchase price or the value of the power purchase price. Of these, the power purchase amount is information on the amount of charge when the above-mentioned electric vehicle is charged at an external facility such as a store, and more specifically, the amount of charge to the electric vehicle is included in the external amount. The charge amount obtained by multiplying the unit price of the charge charge at the facility is applicable. In addition, the purchase price is the price when the retail electric power company purchases the surplus power of the amount of power generated by the solar power generation system or the like in the above-mentioned household which is the facility where the electric vehicle is located. .. This purchase price is calculated by multiplying the amount of surplus electricity by the purchase unit price determined by the retail electric power company.

Further, FIG. 3 shows an example of net electric power asset information 171. The electric power net asset information 171 is information that manages the residual value remaining after offsetting the information of each electric power asset held in the above-mentioned asset management DB 170 based on the positive and negative of the information as the current electric power net asset.

Further, FIG. 4 shows an example of data configuration of the trading management information 5. The trading management information 5 is the information that is the source of one record of the above-mentioned asset management DB 170. The data structure is, for example, a collection of records in which values such as an electric vehicle ID, a user ID, a facility ID, a positive / negative power asset, and information on the power asset are associated with each other using a date as a key.

As an example, the sales management information 5 shown here is held by the charging equipment system 300 of a facility that provides a charging service to an electric vehicle in the city. Therefore, every time an electric vehicle that visits this facility and intends to be charged appears, a record of sales management information 5 is added.

Further, among the items in the sales management information 5, the electric vehicle ID is the identification information of the electric vehicle charged at the facility. The user ID is identification information of the user of the electric vehicle. The facility ID is identification information of the facility that provides the charging service.

Such sales management information 5 is transmitted to the in-vehicle terminal 100 of the electric vehicle after the charging equipment system 300 journalizes the records for each electric vehicle ID.

<Example of flow of power asset management method>
Hereinafter, an operation example in the power asset management system 10 of the present embodiment will be described with reference to the drawings. FIG. 5 is a diagram showing a flow example of the electric power asset management method in the present embodiment. The various operations described below are realized by programs executed by the household terminal 50, the in-vehicle terminal 100, and the charging equipment system 300 in the power asset management system 10. The program is composed of code for performing various operations described below.

First, it is assumed that a photovoltaic power generation system is in operation in a building of a household, and the resident of this household owns an electric vehicle. In addition, of the electric power generated by the above-mentioned solar power generation system, the surplus electric power excluding the amount consumed by the electric equipment of the building is used for charging the electric vehicle, but the electric vehicle is out of the office or full. In the case of charging, a policy is in operation to have retail electricity companies sell or buy through the grid (however, this is just an example).

It is assumed that in a household with such a premise, the above-mentioned photovoltaic power generation system is generating power, a surplus is generated in the amount of power generation, and an electric vehicle is absent. In that case, the household terminal 50 provided in the building of the household notifies the in-vehicle terminal 100 of the electric vehicle through the network 1 of the value of the surplus electric energy sold to the retail electric power company through the grid (see FIG. 6).

On the other hand, the in-vehicle terminal 100 receives the notification of the value of the surplus electric power described above, and applies this to the encryption program 122 to generate positive electric power asset information (s10).

If the electric vehicle is absent, the household terminal 50 may temporarily hold the above-mentioned value of the surplus electric energy and notify when the electric vehicle returns.

As a procedure for generating information on positive electric power assets in such an encryption program 122, for example, the purchase price is calculated by multiplying the purchase unit price by the retail electric power company described above by the value of the surplus electric power amount. Further, the purchase price is encrypted with, for example, an encryption key, and this is used as information on positive electric power assets. This encryption key is unique to the in-vehicle terminal 100 and is concealed in a secure area of the encryption program 122 or the storage device 120.

Further, the in-vehicle terminal 100 stores the information of the positive electric power assets generated in s10 in the asset management DB 170 in the storage area of the ETC card 165 via the card reader 160 (s11).

After that, it is assumed that the above-mentioned electric vehicle moves and arrives at the charging facility and is about to receive the charging service at this charging facility. In this case, the in-vehicle terminal 100 extracts the power net asset information 171 held by the asset management DB 170 of the ETC card 165 and decrypts it by the encryption program 122 (see FIG. 7) (the encryption program 122 is decrypted). It also has a function), and it is determined whether the value of this net power asset is at least 0 or more and there is a remaining value corresponding to charging (s12).

When the in-vehicle terminal 100 has only positive electric power asset information in the asset management DB 170, in s12 described above, each of the positive electric power asset information is applied to the encryption program 122 to be decrypted and purchased. Each value of the amount of money may be acquired and aggregated to obtain the value of net electricity assets.

As a result of the above determination, when there is no remaining value corresponding to the charge (s12: n), the value of the charge amount, that is, the power purchase amount at the electric facility for the electric vehicle is applied to the encryption program 122 to obtain the negative power asset. Information (see FIG. 8) is generated, stored in the asset management DB 170 of the ETC card 165 (s13), and the process is shifted to s10.

As a procedure for generating information on negative power assets in such an encryption program 122, for example, the power purchase amount is calculated by multiplying the charge unit price in the charging facility described above by the charge amount value. Further, this power purchase amount is encrypted with, for example, an encryption key, and this is used as information on negative power assets. This encryption key is unique to the in-vehicle terminal 100 and is concealed in a secure area of the encryption program 122 or the storage device 120.

On the other hand, as a result of the above determination, when there is a remaining value corresponding to charging (s12: y), the in-vehicle terminal 100 extracts the power net asset information 171 held by the asset management DB 170 of the ETC card 165 and encrypts it. Decryption is performed by the conversion program 122, and the value of this net electric power asset is used as a settlement fund and applied to the charging charge for the current charging at the above-mentioned charging facility (see FIG. 9) (s14).

In this case, the charging equipment system 300 of the charging facility notifies the in-vehicle terminal 100 of the charging amount obtained by multiplying the charging amount of the electric vehicle by the charging unit price. On the other hand, the in-vehicle terminal 100 executes a process of settling the amount corresponding to the charge amount indicated by the above notification with the above-mentioned net electric power asset value with the charging equipment system 300. Such payment processing itself is an appropriate application of the prior art.

Subsequently, the in-vehicle terminal 100 applies the value of the net power asset subtracted by the above-mentioned allocation process in s14 to the encryption program 122 to generate new information on the net power asset, thereby generating the information on the net power asset. Update 171 (s15).

When the value of the net electric power asset is a negative value (s16: y) as a result of the above-mentioned update, the in-vehicle terminal 100 is displayed on the output device 150 as the loan information of the electric power asset (see FIG. 10) (s17). , End the process. On the other hand, when the value of the net electric power asset becomes a positive value as a result of the above-mentioned update (s16: n), the process is terminated as it is.

The in-vehicle terminal 100 may execute the power net asset information 171 at regular intervals instead of updating or registering the power net asset information 171 as described above. In that case, the in-vehicle terminal 100 decrypts the information of each of the positive and negative electric power assets held in the asset management DB 170 by the encryption program 122. Further, the in-vehicle terminal 100 aggregates or offsets each value (positive or negative) obtained by this decryption, calculates the value of the net electric power asset, and applies the encryption program 122 to the calculated value to obtain electric power. Generate net worth information.

In addition, when the retail electric power company that purchases the electric power for sale and the electric power sales source for charging the electric vehicle (the retail electric power company that supplies power to the charging facility) are different companies. As the encryption program 122, the above-mentioned in-vehicle terminal 100 calculates the purchase price of the electric power for sale based on the purchase unit price obtained from the retail electric power company of the purchase destination, and the purchase price obtained by the calculation is calculated. By applying the encryption program 122 to the value, positive power asset information is generated. Further, the in-vehicle terminal 100 calculates the purchase price of the charging power to the electric vehicle based on the charging unit price obtained from the retail electric power company that sells the power, and encrypts the value of the power purchase price obtained by the calculation. By applying the encryption program 122, information on negative electric power assets is generated.

Further, when the above-mentioned building or electric vehicle charges a charging facility or another electric vehicle, the in-vehicle terminal 100 applies an encryption program 122 to the charged amount to generate information on positive electric power assets. Then, it is stored in the asset management DB 170 of the ETC card 165. When the electric vehicle receives a charge from another electric vehicle, the in-vehicle terminal 100 applies an encryption program 122 to the charged amount to generate information on negative electric power assets, which is used by the ETC card 165. Stored in the asset management DB 170.

Although the best mode for carrying out the present invention has been specifically described above, the present invention is not limited to this, and various modifications can be made without departing from the gist thereof.

According to this embodiment, efficient use of surplus electric power due to renewable energy can be promoted at low cost through an electric vehicle.

1 Network 5 Trading management information 10 Power asset management system 50 Household terminal 51 Trading management information 100 In-vehicle terminal (information processing device)
110 Communication device 120 Storage device 121 Program 130 Arithmetic device 140 Input device 150 Output device 160 Card reader 165 ETC card 170 Asset management DB
171 Net Electricity Asset Information 200 Retail Electricity Operator System 300 Charging Equipment System 301 Trading Management Information

Claims (12)

A predetermined algorithm is applied to the value of the amount of power sold to the grid in the amount of power generated in the predetermined facility to generate positive power asset information, which is attached to the electric vehicle of the facility or held by the user of the electric vehicle. Negative power asset information is generated by applying a predetermined algorithm to the process of storing in the storage device and the value of the amount of electricity purchased in the electric vehicle charged in another facility other than the facility, and stored in the storage device. It is provided with a calculation device that executes a process and a process of offsetting the positive and negative power assets to generate information on the net power assets and storing the information of the net power assets in the storage device. Information processing device,
A power asset management system characterized by including. The arithmetic unit
When the electric vehicle is charged at the other facility, a process of allocating the information on the positive electric power assets held in the storage device or the information on the net electric power assets to the charging fee for the charging as settlement funds is further executed. , The algorithm is applied to the value of the electric power asset subtracted by the appropriation process to generate new positive or negative electric power asset information and store it in the storage device.
The electric power asset management system according to claim 1. The arithmetic unit
As the algorithm, based on the purchase unit price of electric power from the facility and the charge unit price associated with charging at the other facility, which is determined in advance or obtained from a predetermined business operator, the amount of electricity sold from the facility and the power sale at the other facility Information on electric power assets is generated by calculating the purchase price of the charging power of the above and applying the algorithm to the value of the amount obtained in the calculation.
The electric power asset management system according to claim 1 or 2. When the calculation device is a business operator whose purchase destination of the electric power for the sale of electric power and the power sale source of the electric power for charging the electric vehicle are different, the purchase unit price obtained from the business operator of the purchase destination is used as the algorithm. By calculating the purchase price of electricity for the power sale and applying the algorithm to the value of the purchase price obtained in the calculation, information on the positive power assets is generated, and the power sale source By calculating the power purchase amount of the charged power based on the charge unit price obtained from the business operator of the above and applying the algorithm to the value of the power purchase amount obtained by the calculation, the information of the negative power asset can be obtained. What to generate,
The electric power asset management system according to claim 3. The arithmetic unit
When the value of the net electric power asset is a negative value, it is output as the loan information of the electric power asset.
The electric power asset management system according to any one of claims 1 to 4. The arithmetic unit
When the facility or the electric vehicle charges the other facility or another electric vehicle, the algorithm is applied to the charge amount to generate information on the positive electric power asset and store it in the storage device. Then, when the electric vehicle is charged by another electric vehicle, the algorithm is applied to the charged amount to generate information on the negative electric power asset and store it in the storage device.
The electric power asset management system according to any one of claims 1 to 5. Information processing device
A predetermined algorithm is applied to the value of the amount of power generated in the predetermined facility to be sold to the grid to generate positive power asset information, which is attached to the electric vehicle of the facility or held by the user of the electric vehicle. Processing to store in the storage device and
A process of generating information on negative electric power assets by applying a predetermined algorithm to the value of the amount of electric power purchased in the electric vehicle at another facility other than the facility and storing the information in the storage device.
A process of offsetting the positive and negative power assets to generate information on the net power assets and storing the information on the net power assets in the storage device.
A power asset management method characterized by running. The information processing device
When the electric vehicle is charged at the other facility, a process of allocating the information on the positive electric power assets held in the storage device or the information on the net electric power assets to the charging fee for the charging as settlement funds is further executed. The algorithm is applied to the value of the power asset subtracted by the allocation process to generate new positive or negative power asset information and store it in the storage device.
The electric power asset management method according to claim 7. The information processing device
As the algorithm, based on the purchase unit price of electric power from the facility and the charge unit price associated with charging at the other facility, which is determined in advance or obtained from a predetermined business operator, the amount of electricity sold from the facility and the power sale at the other facility By calculating the purchase amount of the charged power of the above and applying the algorithm to the value of the amount obtained in the calculation, the information of the electric power asset is generated.
The electric power asset management method according to claim 7 or 8. The information processing device
When the purchase destination of the electric power for the sale of electricity and the power sale source of the electric power for charging to the electric vehicle are different businesses, the above-mentioned algorithm is based on the purchase unit price obtained from the business of the purchase destination. By calculating the purchase price of electricity for the sale of electricity and applying the algorithm to the value of the purchase price obtained in the calculation, information on the positive power assets is generated and acquired from the business operator of the power sale source. The information on the negative power asset is generated by calculating the power purchase amount of the charged power based on the charged unit price and applying the algorithm to the value of the power purchase amount obtained in the calculation.
The electric power asset management method according to claim 9. The information processing device
When the value of the net electric power asset is a negative value, it is output as the loan information of the electric power asset.
The electric power asset management method according to any one of claims 7 to 10. The information processing device
When the facility or the electric vehicle charges the other facility or another electric vehicle, the algorithm is applied to the charge amount to generate information on the positive electric power asset and store it in the storage device. Then, when the electric vehicle is charged by another electric vehicle, the algorithm is applied to the charge amount to generate information on the negative electric power asset and store it in the storage device.
The electric power asset management method according to any one of claims 7 to 11.

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