JP2013037429A - Charging system for electric car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system for an electric car which adds use charge of a charger on the basis of an electric bill menu of each household regardless of which area charging equipment is installed and performs power transaction among electric power companies.SOLUTION: A charger 3 for charging a battery of an electric car 2, a watt-hour meter 4 for transaction for acquiring customer information and power consumption, and processors 5, 6, 7, 8 of the respective companies for identifying customers of their own companies on the basis of the customer information are connected in a communicable way. The processors 5, 6, 7, 8 have customer information databases 32 for storing their own customer information and are provided with: customer information processing/sorting parts 31 for identifying whether or not customers are their own companies' ones; customer information collation parts 33 for referring to the customer information databases 32 and determining whether or not the power consumption charge of the charger 3 can be added to the electricity use charge of the customer; and customer information processing/sorting parts 31 for calculating power consumption of the charger 3 on the basis of the electricity bill menu of the customers and adding them to the electricity use charges of the customers.

Description

  The present invention relates to an electric vehicle charging system for charging an electric vehicle battery in a charging facility such as a charging station.

In recent years, development and popularization of electric vehicles have been promoted, and electric vehicles have been introduced in companies and local governments. Companies and local governments install charging facilities in the parking lots of buildings, and use an electric vehicle to charge the batteries with the charging facilities when they return from where they are, so the parking lot (charging facility) is the base. -The range that can be reciprocated with one charge as the center is the travel range, and it is not possible to go far. Therefore, in order to be able to travel far away, a charging facility that can quickly charge the battery of an electric vehicle is installed in a parking lot of a shopping center or the like so that it can be charged outside the home.
Payment of the usage fee for the charger at the charging station, etc., can be made on the spot using cash, etc., or by charging the electricity bill of each household using the electricity company's fee system. As a payment method using the latter charge system of the electric power company, the user's authentication work is performed at the time of charging with an ID card such as a driver's license, the amount of use performed at the charging device installed at home, and the charging stand Information on the amount of power used and the amount of power used for charging from a charging device installed in a storage device can be separately stored in a storage device, and finally billed to each household in the electricity company's charge calculation system A system is known (see Patent Document 1).

  In addition, as an example of a system that allows the user to know the total charging fee within a certain period, a charger that acquires charging information including a charging date and time and a charging power amount, and identification information that identifies the user are acquired. There is also known an electric vehicle charging system in which charging facilities having a charging terminal are installed in a plurality of charging stations and a management computer calculates a charging fee based on charging information and identification information received from each charging facility. (See Patent Document 2).

JP 2009-129384 A JP 2010-178450 A

However, when users use charging facilities in various locations, the electricity tariff menu with which each facility contracts with the electric power company is not the same, and there are a wide variety, so the charger installer (hereinafter referred to as the installer) However, if different charge menus are adopted, calculation of the charge charge becomes complicated, and it is unclear whether the user has been charged with the optimum charge charge, and there is a disadvantage that the use charge becomes high.
For example, charging devices for charging stations are generally used in the daytime, but the installer adopts a charge menu that is higher than the unit price of a general household and discounted at night. , The usage fee for users who use charging facilities during daytime hours will be higher, and the benefits of using charging stations will be reduced. There is a problem that it becomes difficult to be done.
In addition, in order to perform systematic charging using the charging system described in Patent Document 2 as a guideline for the total charging fee, it is necessary to use the charging facility in a specific time zone where the charging fee is low. The user is not always available during that time period, and it becomes difficult to use at the user's desired timing.
In addition, it is expected that users will select and use a charging station that adopts a low-priced menu, which makes it difficult to secure the interests of the installer and hinders the spread of charging devices. There are also inconveniences.

  The present invention has been made in view of such circumstances, and makes it possible to add the charge for using the charging device based on the electricity bill menu of each household regardless of the area where the charging facility is installed, and to make power transactions between power companies. The main object is to provide a charging system for an electric vehicle that can improve the convenience and promote the spread of the charging device.

  In order to achieve the above object, a charging system for an electric vehicle according to the present invention includes a charging device that charges a battery of an electric vehicle, a transaction watt-hour meter that acquires customer information and power usage from the charging device, Each company's processing device for identifying its own customer based on the customer information acquired by the trading watt-hour meter is connected so as to be able to communicate, and each of the processing devices has its own customer information stored therein. A customer identification means for identifying whether or not the customer is a company customer based on the customer information; and when the customer identification is identified as the customer of the company, A sumability determination unit that determines whether or not the power usage fee of the charging device can be added to the usage fee; and the power usage fee of the charging device can be added to the electric usage fee of the customer. And a summing instruction means for calculating a power usage amount of the charging device based on the electricity bill menu of the customer and instructing the sum to the electricity bill of the customer when determined to be .

Therefore, based on the customer information acquired from the charging device, the customer identification means identifies whether it is its own customer, and when it is identified as its own customer, the total availability judgment means refers to the own customer information database If it is determined whether the power usage fee of the charging device can be added to the customer's electricity usage fee, and it is determined that the power usage fee of the charging device can be added to the customer's electricity usage fee, The summing means calculates the amount of power used by the charging device based on the customer's electricity bill menu and adds it to the customer's electricity bill. Since the usage of the charging device is added to the own electricity usage fee based on the fee menu, it is possible to avoid an inadvertent increase in the usage fee.
In addition, when the customer identification unit identifies that the customer is not its own customer, the customer identification unit has a transmission unit that transmits the customer information to the processing device of the other company, and the processing device of the other company is transmitted by the transmission unit. Based on the customer information, the customer identification means, the summation possibility judgment means, and the summation instruction means are executed, so that the user can use his / her charging device based on the home electricity bill menu in any power jurisdiction area. Combined with the electricity usage fee, it is possible to easily use local charging devices as if charging at home.
In addition, when using a charging device in the jurisdiction of another electric power company, if the processing device recognizes that it is a customer of another company, the other company bears the power amount of the charging device used by the customer from the other company. There may be further provided means for requesting to do so and means for enabling trading for the amount of power supplied from the other company.
In such a structure, it becomes possible to carry out the electric power transaction between electric power companies according to the electric power consumption of the charging device used by the user. In other words, since power supplied from other companies can be bought and sold, the other companies can purchase this power when it is considered that power is insufficient, and it is possible to avoid power shortage. Become.

As described above, based on the customer information obtained from the charging device, whether or not it is your own customer is identified, and if it is identified as your own customer, refer to the customer's customer information database and use the customer's electricity It is determined whether or not the power usage fee of the charging device can be added to the charge, and if it is determined that the charging can be added, the power usage amount of the charging device is calculated based on the customer's electricity bill menu and the customer's electricity usage Since the charges are added to the charge, the user will inadvertently increase the charge because the charge for the charging device will be added to his / her own charge based on the home electricity bill menu regardless of the area where the charging facility is installed. The customer can use the charging facility at a low cost, and the charging station can be widely used.
In particular, the convenience is improved in the following points. In other words, since the charging facility installer is charged at the unit price of the user's home, it is not necessary to calculate the unit price for profit. In addition, since the payment method is added to the electricity bill of each household, there is no need for cash collection, and users can use it as if charging at home, so they do not pay extra electricity bills. Furthermore, since it becomes easy to enter as a charging facility installer even in ordinary households, it is possible to promote the spread of the charging facility.
In addition, when recognizing that it is a customer of another company, it is required to bear the power amount of the charging device used by the customer from the other company, and in response to this, the power amount supplied from the other company is bought and sold. By providing the means to enable, the other company can purchase power from this third party and avoid the power shortage when it is thought that the power will be insufficient. It is possible to use power without excess or deficiency.

FIG. 1 is a schematic configuration diagram illustrating a charging system according to the first embodiment. FIG. 2 is a configuration diagram of a network according to the present embodiment. FIG. 3 is a flowchart for adding the charge to the electricity charge of the user's household. FIG. 4 is a flowchart in the case where the charging fee is paid by cash or a credit card. It is the schematic block diagram which showed the outline of the apparatus provided in a general household and the household which has a distributed power supply. FIG. 6 is a schematic configuration diagram illustrating a charging system according to the second embodiment. FIG. 7 is a flowchart of the charging system according to the second embodiment. FIG. 8 is a flowchart of the charging system according to the third embodiment.

  Hereinafter, a charging system for an electric vehicle according to the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, an electric vehicle charging system 1 includes a charging device 3A, 3B, 3C (hereinafter simply referred to as a charging device 3) for charging a battery of an electric vehicle 2, and customer information and power consumption from the charging device 3. Power meter 4 for transaction, self-processing device 5 for identifying its own customer based on customer information acquired by power meter 4 for transaction, and processing device for other companies (A power company) 6, B electric power company 7 and C electric power company 8) are connected so as to be able to communicate with each other.

  The charging device 3 is a quick charger that can be quickly charged by being installed at a charging stand or the like, and includes a unit price display unit 10 that displays a unit price of charging, a paddle unit 11 that is connected to a battery of the electric vehicle 2, and a usage The ID recognition device 12 that reads the identification card 15 in which the identification information of the person is stored and the operation unit 13 that operates the unit price display unit 10 are used for transactions from a connection unit (not shown) via a connection cable. It is connected to the watt-hour meter 4 so as to be able to transmit and receive data.

  The identification card 15 is embedded with an IC chip that stores identification data issued by a power company. The identification data stores user attribute information (address, company code of the power company at the address) and the like. Yes.

  In addition, the user operates the unit price display unit 10 to select a unit price (local unit price or home unit price) used for settlement and a payment method. As a specific example of the payment method, it is possible to select whether to pay with cash or a credit card locally, or to settle later. When the user selects later settlement, the user is charged later based on the identification data.

  Specifically, if the user chooses “Settlement at local unit price”, the power usage fee (charging charge) may be settled with cash or a credit card locally, or there is not enough cash. If the user has a credit card or does not have a credit card, he / she selects settlement at a later date and charges the user's home at a later date from the power company having jurisdiction over the charging device 3 based on the value of the power consumption acquisition unit 21 The charging fee may be charged together with the electricity usage fee at the user's home.

  The transaction watt-hour meter 4 uses the customer information acquisition unit 20 that acquires customer information based on data received from the identification card read by the ID recognition device 12 and the information on the power consumption of the charging device 3. A power amount acquisition unit 21, a quick charger operation state acquisition unit 22 for determining the operation state of the charging device 3, a fee menu contract unit price storage unit 23 storing a home unit price or a local unit price recognized by the identification card 15, From the electricity bill charging processing unit 24 that charges the electricity bill based on the amount of power used, the meter display unit 25 that displays the meter value of the power consumption (MWh) of the transaction energy meter 4, and the electricity bill billing processing unit 24 A transmission unit 26a that transmits accounting information, a transmission unit 26b that transmits customer information acquired by the customer information acquisition unit 20, and a transmission unit that transmits information from a customer information inquiry unit 33 of the company processing apparatus 5 described later. A receiver 27 is provided for receiving via the feed can be is connected to the substation 28 via a network to be described later is connected to its processor 5.

The meter display unit 25 indicates the amount of power used, and indicates a value obtained by integrating three watt-hour meters (WH1, WH2, WH3) connected to the respective charging devices 3. The meter reader of the electric power company calculates the electricity bill based on the amount of power used and charges the installer who installs the charging device 3.
Further, as an example of the meter reading method, the meter reader can directly confirm the value on the meter display unit 25 by visual observation, but it may be confirmed by remote operation via a network described later.

The in-house processing device 5 includes an in-house customer information database 32 (hereinafter simply referred to as a customer information database) in which information about the company's customers is stored, and between the power companies that process information necessary for transferring power between the power companies. The power transfer processing unit 30 (a means for requesting that the amount of power used by the user be borne by the company from another company, a means for enabling the buying and selling of the power amount), and the customer information acquired by the customer information acquisition unit 20 as a customer A customer information processing / distribution unit (customer identification means, summing instruction means) 31 that processes customer information while referring to information in the information database 32 and distributes the information to other power companies, and power transfer processing between these power companies Receiving unit 35a for receiving data such as customer information from transaction energy meter 4 sent to unit 30 and customer information processing / distribution unit 31; Means) A transmission unit 34 that transmits the customer information inquired at 33 to the watt-hour meter 4 for transaction, a reception unit 35b that receives the customer information acquired by the customer information acquisition unit 20 via the transmission unit 26b, The customer information obtained by the customer information obtaining unit 20 is inquired with the customer information stored in the customer information database 32 to confirm the customer information, and the result inquired by the customer information inquiry unit 33 is obtained. The transmission unit 36 is configured to transmit to the company fee collection system 37, and is connected via the transmission unit 36 to other company processing apparatuses 6, 7, and 8 having the same configuration as the company processing apparatus 5.
In addition, the connection between the charging device 3 and the transaction watt-hour meter 4, the connection between the transaction watt-hour meter 4 and the in-house processing device 5, the connection between the in-house processing device 5 and the other company's processing devices 6, 7, 8, For example, as shown in FIG. 2, the connection between the processing device 5 and the company fee collection system 37 and the connection with the other company's processing devices 6, 7, 8 are performed via a network 41 such as the Internet or a dedicated communication line. Built to allow communication.

Regarding the case where the charging fee for the charging device 3 is paid using the electric vehicle charging system 1 configured as described above, first, the case where the user charges using the identification card 15 provided by the electric power company. This will be described based on the flowchart shown in FIG.
When the user inserts the identification card 15 into the ID recognition device 12 of the charging device 3, the charging device 3 determines whether or not the card inserted by the user is the identification card 15 (step S100), and is the identification card 15. If it is determined (step S100: Y), the identification card information is read from the identification card 15, and the identification card information is transmitted to the watt-hour meter 4 for transaction. Receiving this, the watt-hour meter 4 for transaction acquires identification card information in the customer information acquisition part 20 (step S101).

  The customer information acquisition unit 20 of the transaction watt-hour meter 4 transmits the acquired identification data to the electricity billing processing unit 24. Based on the identification data, the electricity billing processing unit 24 identifies the address where the user lives and the power company in charge, and transmits the identification data from the transmission unit 26a to the company processing device 5 (step S102).

  Upon receipt of the identification data by the receiving unit 35a, the in-house processing device 5 determines whether or not the customer information processing / distributing unit 31 is a customer in its own jurisdiction based on the attribute information of the user (step S103). If it is determined that the customer is a customer (step S103: Y), the customer information inquiry unit 33 refers to the customer information database 32 and determines whether or not the charge can be added (step S104). On the other hand, when it is determined that the user is not the customer of the company (step S103: N), the other company customer's addition process described later is performed.

When the customer information inquiry unit 33 determines that the addition is impossible (step S104: N), the payment method using cash or credit card, which will be described later, is performed.
On the other hand, when it is determined that the addition is possible (step S <b> 104: Y), the addition possible signal is transmitted to the charging device 3. The charging device 3 displays that the unit price can be added to the unit price display unit 10, displays that the unit price / selectable, and displays the local unit price where the charging facility is installed and the home unit price. When the user selects the displayed unit price, charging is started (step S105).

When charging is started, the quick charger operating state acquisition unit 22 of the transaction energy meter 4 detects the operation of the charging device 3 and transmits an operation signal to the electricity billing processing unit 24. When the end of the operation of the charging device 3 is detected along with the end of charging, a charging end signal is transmitted to the electricity billing processing unit 24 (step S106).
Then, the used power amount is transmitted from the used power amount acquiring unit 21 to the electricity billing processing unit 24. The electricity billing processing unit 24 transmits the used power amount data obtained by calculating the amount of power used for charging to the in-house processing device 5 (step 107).

In the in-house processing device 5, the customer information processing / distributing unit 31 transmits the power consumption data to the in-house fee collection system 37 via the transmission unit 36, and the electricity usage fee is calculated based on the electricity rate menu with which the customer contracts. A summation instruction process for instructing the sum of the charge for using the charging device is performed (step S108). In-house fee collection system 37 receives this summation instruction, and sums the charging fee of charging device 3 to the electricity usage fee based on the electricity bill menu with which the customer has a contract.
In addition to the above-mentioned charging fee, the user pays a charging device usage fee as a monthly fee to an issuer such as a user identification card. The issuer distributes the money collected as the charging device usage fee to the charging device installer.

If it is determined in step S103 that the user is not the customer of the company (step S103: N), the other company's customers are summed up.
In other words, the other company's processing devices 6, 7, and 8 perform a determination that they can be combined in the same processing as the processing device 5 (step S109), a charging process (step S110), and a transmission completion signal transmission (step S111). Then, the electricity billing processing unit 24 of the transaction energy meter 4 transmits the used power amount data obtained by calculating the amount of power used for charging to the processing devices 6, 7, and 8 of other companies (Step 112) and distributes the customer information processing. The unit 31 transmits power consumption data from the transmission unit 34 to the other company fee systems 38, 39, and 40, and performs a summation instruction process for instructing the summation of the electricity usage fee based on the electricity bill menu with which the customer contracts ( Step S113). Upon receiving this summation instruction, a third-party fee collection system (not shown) adds the charging fee of the charging device 3 to the electricity usage fee based on the electricity bill menu with which the customer has a contract.

Next, processing of a payment method using cash or a credit card will be described. When charging device 3 determines that the payment method of the user is not an identification card (step S100: N), it determines whether the payment method is a credit card or cash (step S114). When the user selects a credit card and the credit card is inserted into the ID recognition device and it is determined that the payment method is a credit card, the charging device 3 reads the credit card information from the credit card and trades the credit card information. To the watt-hour meter 4.
In response to this, the customer information acquisition unit 20 of the transaction watt-hour meter 4 acquires the credit card information (step S115), and transmits the credit card information to the company processing device 5 (step S116), and the charge menu. The contract unit price storage unit 23 is referred to and the local unit price (local unit price) where the charging apparatus 3 is installed is transmitted to the charging apparatus 3 (step S117). In response to this, the charging device 3 displays the local unit price on the unit price display unit 10 (step S118), and the user starts charging at the unit price at the place where the charging device 3 is installed (step S119).
When the charging is completed, the quick charger operating state acquisition unit 22 transmits a charging end signal to the electricity billing processing unit 24 (step S120), and the electricity billing processing unit 24 that has received this transmits the power consumption data in-house. The data is transmitted to the processing device 5 (step 113).
The customer information processing / distribution unit 31 performs billing processing for charging the credit card company together with the charging fee and the charging device usage fee (step S122). In addition, when there is a deposit from the credit card company to the power company of the in-house processing apparatus 5, the power company pays the charge amount to the charging installer.

  If it is determined in step S114 that the user's payment method is cash, a local unit price display signal is transmitted from the transaction energy meter 4 to the charging device 3 in the same process as when the payment method is selected as a credit card. (Step S123), local unit price display processing (Step S124), charging processing (Step S125), and charging completion processing (Step S126) are performed. Furthermore, the transaction energy meter 4 calculates a usage fee at a local unit price based on the amount of power used by the user, and transmits usage fee information to the charging device 3 (step S127). The charging device 3 displays the received usage fee information on the unit price display unit 10 (step S128). Then, the user pays the charging device 3 the usage fee displayed on the unit price display unit 10.

Here, the used power amount data transmitted to the company processing device 5 or the other company processing devices 6, 7, and 8 in step S107, step S112, and step S121 stores user identification information, used power amount, and the like. For example, when a user who lives in the jurisdiction of the electric power company A charges 0.75 kWh in 30 minutes from 14:00:00 to 14:30 in the jurisdiction of the electric power company B, it is shown in Table 1. As described above, the power company code and the customer code having jurisdiction over the user are recorded as the identification information, and the charging time, the charging area code, and the charging power amount are recorded as the power consumption information. The power consumption data may be information to which information is added as necessary.

  The calculation of the amount of charged power is performed by the power amount integration process for the meter display unit 25 of the transaction power amount meter 4. That is, when the charge for using the charging device 3 can be added to the electricity charge of each household, the process for integrating the electric energy is not executed because the charge is transferred to the user's house. On the other hand, when the addition is impossible, the integration process is executed based on the used electric energy acquisition unit 21. In the case of payment by credit card, the credit card company pays the charging fee and the charging device usage fee, so it is not accumulated.

Further, the charging process in step S108 and step S113 will be described. For example, in the user's house, when a contract for a metered lamp and a contract for an electric vehicle are made, the power consumption is added to the contract for the electric vehicle. As a result, the charging process is performed as if charging was performed at the user's house.
Here, as shown in FIG. 5, a general user house 45 includes a watt-hour meter 51 for power purchase and a charging device 3, and a distributed power source such as a fuel cell or solar power generation. In addition to the general configuration of the user's home 45, the specific house 46 having a wattage has a watt-hour meter 52 for selling power.
Such a specific house 46 may employ a low-voltage power menu that is lower than a general electricity bill. When the low-voltage power menu is adopted, the charging fee may be calculated only as a metered portion that does not require a basic fee so that the user of the charging device 3 can be charged at low cost.

  Here, the handling of the electric energy when the other company's customers are summed up will be described. The inter-electricity company electric power transfer processing unit 30 of the in-house processing device 5 has an electric power transfer right corresponding to the electric energy used by the user. Information that it has occurred is transmitted to the processing devices 6, 7, and 8 of other companies, and a power amount transfer process and a power amount transaction are performed between the company's own power company and the user's power company.

The transfer process between the electric power companies and the electric energy transaction will be described.
If a user residing in the jurisdiction of the A power company charges in the jurisdiction of the B power company, the user will be charged a charge to the A power company to process it as if it was charged within the jurisdiction of the A power company. Paid.
Specifically, when a power amount of 10 MWh is used and a user is charged at a unit price of 27 yen / kWh, billing charge = 27 (unit price charge: yen / kWh) × 10 × 10 ³ (power amount: kWh) ) = 270,000 yen is charged to the user.

The electric power company B is supplied with 10 MWh from the electric power company A the next day.
The B power company can sell the replenished power amount at the power exchange (power amount transaction), and the A power company can make a successful bid for this power amount. In this case, the electric power company B is paid a successful bid fee from the electric power company A, and the electric power company A can supply the amount of electric power awarded to the jurisdiction.
For example, if A power company makes a successful bid at 10 yen / kWh, the winning bid will be: successful bid charge = 10 (unit price charge: yen / kWh) × 10 × 10 ³ (electric power: kWh) = 100,000 yen Become.

As described above, based on the customer information acquired from the charging device 3, whether or not the customer is the company's customer is identified. It is determined whether or not the power usage fee of the charging device 3 can be added to the usage fee, and if it is determined that the charging can be added, the power usage amount of the charging device 3 is calculated based on the customer's electricity price menu and the customer Therefore, regardless of the area where the charging facility is installed, the user will inadvertently add power to his or her own electricity usage fee based on the home electricity bill menu. It is possible to avoid an increase in the usage fee, the customer can use the charging device 3 at a low price, and the spread of charging stations can be promoted.
In particular, the convenience is improved in the following points. That is, since the charging device 3 is charged at the unit price of the user's home, it is not necessary to calculate the unit price to obtain profit. In addition, since the payment method is combined with the electricity usage fee of each household, there is no need for cash collection, and the user can use it as if charging at home. Further, it is not necessary to pay, and it becomes easy to enter as a charging facility installer even in ordinary households, so that it is possible to promote the spread of the charging facility.
In addition, when recognizing that it is a customer of another company, it is required to bear the amount of power of the charging device used by the customer from the other company. By providing a means for buying and selling through an institution, it is possible for the other company to purchase power from this third-party organization and avoid a shortage of power when it is considered that the power will be insufficient. Thus, it is possible to use electric power between electric power companies without excess or deficiency.
Needless to say, the charging device 3 described above is not limited to the quick charger, and can be used for other chargers.

In the above-described charging system 1 for an electric vehicle, the charging fee is combined with the power usage fee among a plurality of electric power companies. However, the electric vehicle charging system 1 can be implemented by only one electric power company. is there.
Hereinafter, although a present Example is described, in the same structure as Example 1, the same code | symbol is attached | subjected to the same location and description is abbreviate | omitted.

  As shown in FIG. 6, in the electric vehicle charging system 1 according to this embodiment, the in-house processing device 5 includes a customer information database 32, a customer information inquiry unit 33, a reception unit 35, and a transmission unit 36. The in-house fee collection system 37 and the transaction energy meter 4 are connected so as to be able to communicate with each other.

  In addition, as shown in FIG. 7, in the processing of this embodiment, since it is not connected to other companies' processing devices 6, 7, and 8, it is determined that it is not its own customer in its own customer judgment (step S203). If so (step S203: N), the credit card or cash is selected as the payment method, and the charging device 3 is used.

  As described above, it is possible to simplify the system by constructing the system by itself, and it is possible to improve convenience because the cost is reduced and the communication speed is increased.

  In the above-described embodiment, the unit price of the user is read out from the customer information database. However, the price of the unit price may be stored in the identification card in order to reduce the amount of data.

  In this case, as shown in FIG. 8, when it is determined that the charging device 3 is the identification card 15 (step S300: Y), the identification card information is read from the identification card 15, and the identification card information is used for transaction. Transmit to watt-hour meter 4. Receiving this, the watt-hour meter 4 for transaction acquires identification card information and home unit price information by the customer information acquisition part 20 (step S301).

Transaction energy meter 4 compares the local unit price with the home unit price to determine whether the local unit price is cheaper (step S302). If the home unit price is lower (step S302: N), the above-described implementation is performed. In the same way as in the example, after determining whether the total can be added, the charging process is performed.
On the other hand, if the local unit price is low (step S302: Y), the local unit price and the home unit price are transmitted to the charging apparatus 3, and the charging apparatus 3 causes the unit price display unit 10 to display the local unit price and the home unit price.

  The charging device 3 determines whether to charge at the local unit price or at the home unit price based on the user's selection (step S304). When the local unit price is selected, the charging device 3 performs the charging process at the local unit price (step S305). ). Thereafter, as in the case of paying with cash described in the first embodiment, transmission of a charge completion signal (step S306), reception of a charge display signal from the transaction energy meter 4 (step S307), charge display processing (step S308) Is executed and the billing fee is paid by the user.

On the other hand, if charging at the home unit price is selected, the identification card information is transmitted to the in-house processing device 5 (step S309), and then the payment method using the identification card 15 described in the first embodiment is selected. The same processing as that performed is performed.
The charging device 3 is configured to be rewritable to the currently contracted unit price when the home unit price stored in the identification card 15 is different from the unit price currently contracted by the user.

DESCRIPTION OF SYMBOLS 1 Charging system for electric vehicles 2 Electric vehicle 3 Charging device 4 Electricity meter for transaction 5 In-house processing device 6, 7, 8 Other company's processing device 30 Inter-power company power transfer processing unit 31 Customer information processing / distribution unit 32 In-house customer information database 33 Customer Information Inquiry Department 36 Transmission Department

Claims (3)

Identify the customer based on the charging device that charges the battery of the electric vehicle, the transaction watt-hour meter that acquires customer information and power usage from the charging device, and the customer information acquired by the transaction watt-hour meter Each company's processing equipment is connected to be able to communicate,
Each of the processing devices
Has its own customer information database that stores its own customer information,
Customer identification means for identifying whether or not the customer is based on the customer information;
When it is identified as a customer of its own company, a summation availability determination unit that determines whether or not the power usage fee of the charging device can be added to the customer's electricity usage fee with reference to the company customer information database;
When it is determined that the electricity usage fee of the charging device can be added to the electricity usage fee of the customer, the electricity usage amount of the charging device is calculated based on the electricity price menu of the customer to calculate the electricity usage of the customer. A summing instruction means for instructing the summing of charges;
The charging system for electric vehicles characterized by comprising. When the customer identification means identifies that the customer is not its own customer, it has a transmission means for transmitting the customer information to the processing device of the corresponding other company,
2. The processing device of the other company is configured to execute the customer identification unit, the summation determination unit, and the summation instruction unit based on customer information transmitted by the transmission unit. Charging system for electric vehicles. The processor is
When recognizing that it is a customer of another company, means for requesting the company to bear the power amount of the charging device used by the customer from the other company,
The charging system for an electric vehicle according to claim 1, further comprising means for enabling trading of the amount of electric power supplied from the other company.

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