JP2016214075A - Charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system that enables a house terminal to receive an electricity bill for electric power used to charge a storage battery mounted in a vehicle by using a private communication network in an apartment house.SOLUTION: A charging system includes a charging unit 50, an authentication device 60, and an aggregating device 13. The charging unit 50 is installed in an apartment house 10 to charge a storage battery of a vehicle. A house terminal 11 has a function of receiving meter reading information from a power meter 20 for measuring the amount of power used by each of a plurality of houses 101. In addition, the house terminal 11 has a function of receiving the measured electric power from an electric power measuring unit 523 for measuring the electric power which is used to charge the power storage battery by the charging unit 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a charging system in which a charging unit for charging a storage battery mounted on a vehicle is installed in a common part of a building.

  Conventionally, in order to charge a rechargeable battery mounted on a vehicle, it has been considered to provide a charging stand (charging unit) attached to a building (for example, see Patent Document 1). In Patent Literature 1, a user who uses a charging stand is authenticated using identification information for operating an electric lock provided in each dwelling unit of the apartment house, and a charging stand is provided for each dwelling unit associated with the identification information. Generating billing information for the use of. In addition, a technique is described in which a charging station usage schedule is generated by a reservation request by a user, and charging is permitted by the charging station by using the usage schedule together with user authentication.

  Furthermore, in Patent Document 1, a charging reservation unit is provided in each dwelling unit in order to reserve the use of a charging stand, and the charging reservation unit has a function of communicating with a charge management device to make a charging reservation. The charge management device is installed in a parking lot together with a charging stand.

JP 2010-152511 A

  As described above, in the technique described in Patent Document 1, a charging stand is reserved by communication between a charging reservation unit provided in each dwelling unit and a charge management device installed in a parking lot. Therefore, each dwelling unit of the apartment house needs a charging reservation unit for making a reservation for using the charging stand, and the parking lot needs to have a charging management device in addition to the charging stand. In addition, since it is necessary to newly lay a communication path for performing communication between the charge reservation unit and the charge management device, it is necessary to introduce a large amount of equipment for charging the storage battery.

  The present invention has been made in view of the above reasons, and its object is to provide a charging system that makes it possible to divert existing equipment to a part of equipment for charging a storage battery mounted on a vehicle. It is in.

  In order to achieve the above object, a charging system according to the present invention includes a charging unit, an authentication device, and an aggregation device. The charging unit is installed in a common part shared by the consumers in a building having a plurality of spaces respectively occupied by electric power consumers, and charges a storage battery of the vehicle. The authentication device is arranged in a predetermined space area where the charging unit is installed and authenticates a user of the charging unit. The aggregation device communicates with information terminals installed in the spaces through a local communication network laid in the building. The information terminal has a function of receiving meter reading information from a power meter that measures the amount of power used in each of the plurality of spaces. Further, the information terminal has a function of receiving a measured amount of power from a power metering unit that measures the power used by the charging unit to charge the storage battery.

  According to the configuration of the present invention, it becomes possible for the information terminal to receive the electricity bill for the electric power used for charging the storage battery mounted on the vehicle by using the existing equipment.

It is a schematic block diagram which shows the whole structure of embodiment. It is a block diagram which shows the principal part of embodiment.

  The embodiment described below is directed to a building such as an apartment house provided with a plurality of spaces occupied by electric power consumers. Moreover, in the charging system described below, the power usage amount in each customer (space) in the building is acquired and managed at a place different from the building. Power is supplied to the building using a power distribution network. In the embodiment described below, a building in which a plurality of consumers exist is not limited to a housing complex, but a space (an office where a plurality of consumers are independent, such as a tenant building used as an office or a store) , A store occupying a store). However, about the following embodiment, the case where a building is an apartment house and the space which a consumer occupies is a dwelling unit is demonstrated as an example.

  As shown in FIG. 1, a plurality of dwelling units 101 exist in the apartment house 10 that is a building, and a distribution board 21 and a dwelling unit terminal 11 that is an information terminal are arranged in each dwelling unit 101. The distribution board 21 has a branch breaker (not shown) for branching the electric power received from the distribution line 22 laid in the apartment 10 to a branch line (not shown) laid in the dwelling unit 101, and a distribution board. A main breaker (not shown) disposed between the electric wire 22 and the branch breaker is incorporated. Moreover, the distribution board 21 incorporates the communication apparatus 12 mentioned later. The communication device 12 is connected between the primary side of the main breaker built in the distribution board 21 and the secondary side of the branch breaker that supplies power to the dwelling unit terminal 11. Note that the communication device 12 is not necessarily stored in the distribution board 21 and may be disposed outside the distribution board 21.

  On the other hand, the dwelling unit terminal 11 communicates with an aggregation device 13 composed of a computer server disposed in the manager room 102 and the like through the local communication network 1 laid in the apartment house 10. The dwelling unit terminal 11, the local communication network 1, and the aggregation device 13 are provided as basic facilities of the apartment house 10. The protocol used in the local communication network 1 is not particularly limited, but Ethernet (registered trademark) or the like generally used in wired communication is used. Further, a dedicated protocol may be used for the local area communication network 1.

  Specifically, each dwelling unit terminal 11 is provided with a function for calling with a door phone slave unit or a lobby intercom in each dwelling unit 101 in which the dwelling unit terminal 11 is installed. Further, each dwelling unit terminal 11 has a function of notifying the aggregation device 13 that an abnormality has been detected by a sensor (fire detector, gas sensor, etc.) installed in each dwelling unit 101. A function of notifying the dwelling unit terminal 11 of an alarm is provided.

  By the way, in many cases, the housing complex 10 receives power from the distribution network 24 at a high voltage such as 6600 V, and after the voltage is stepped down to 100 V / 200 V by the step-down transformer 23 disposed in the electric room 103 of the housing complex 10, Supply power. In the electrical room 103, in addition to the step-down transformer 23, a power meter 25 for power purchase for measuring the amount of power received from the power distribution network 24 laid outside and a power meter 26 for power sale described later are disposed. Is done. The power meters 25 and 26 are connected to the primary side of the step-down transformer 23.

  The distribution line 22 of the apartment house 10 is connected to the secondary side of the step-down transformer 23, and a dedicated distribution line 221 that supplies power to each dwelling unit 101 branches from the distribution line 22. The dedicated distribution line 221 is provided with a power meter 20 as a meter for measuring the amount of power used in each dwelling unit 101. The power meter 20 is housed in a meter box 27. As shown in FIG. 2, the meter box 27 also stores a meter reading terminal 15 that acquires and stores a measured value measured by the power meter 20 as meter reading information. The meter-reading terminal 15 acquires meter-reading information from the power meter 20 every predetermined time (for example, every 5 minutes, every 30 minutes, etc.), and stores the meter-reading information for a certain period (for example, 40 days).

  The meter-reading terminal 15 includes a power line communication interface 151 that performs power line carrier communication using the dedicated distribution line 221 and the distribution line 22 of the apartment house 10 as communication paths. The meter-reading terminal 15 of the present embodiment also includes a wireless communication interface 152 for performing wireless communication. The wireless communication used in the wireless communication interface 152 uses radio waves as a transmission medium. Various standards for this type of wireless communication are known, and are appropriately selected from various wireless communication technologies such as WiFi (registered trademark), ZigBee (registered trademark), Bluetooth (registered trademark), and specific low power wireless. In addition, you may employ | adopt other radio | wireless communication techniques, such as the structure which uses other electromagnetic waves like light as a radio signal, the structure which uses an electric field or a magnetic field for a transmission medium, the structure which uses an ultrasonic wave.

  On the other hand, the distribution board 21 of each dwelling unit 101 is connected to each dedicated distribution line 221, and the meter box 27 and the distribution board 21 are connected one-on-one via the dedicated distribution line 221. In the distribution board 21, the communication device 12 is arranged as described above. The communication device 12 includes a power line communication interface 121 that forms a communication path with the power line communication interface 151 of the meter-reading terminal 15 through the dedicated distribution line 221. That is, the communication device 12 performs power line carrier communication using the dedicated distribution line 221 as a communication path with the meter-reading terminal 15 and acquires meter-reading information acquired by the meter-reading terminal 15.

  Here, since the distance between the distribution board 21 provided in each dwelling unit 101 and the power meter 20 is relatively short, good communication quality can be obtained between the communication device 12 and the meter-reading terminal 15 while using power line carrier communication. Can be secured. In the above configuration, the distance between the communication device 12 and the meter-reading terminal 15 is short, and it is easy to ensure communication quality. In addition, there is one dedicated distribution line 221 between the communication device 12 and the meter-reading terminal 15, which is almost the same as the state connected with the dedicated line, and between the communication device 12 and the meter-reading terminal 15. The possibility of communication failure is reduced.

  The communication device 12 also communicates with the dwelling unit terminal 11. In this embodiment, the branch line (not shown) laid in the dwelling unit 101 is used as the communication path 2 between the communication device 12 and the dwelling unit terminal 11, and the power line is conveyed between the dwelling unit terminal 11 and the communication unit 12. A configuration for performing communication is adopted. Therefore, the communication device 12 also uses the power line communication interface 121 for communication with the dwelling unit terminal 11. However, other technologies can be used for the communication path 2 between the communication device 12 and the dwelling unit terminal 11. For example, it is possible to form the communication path 2 using a radio signal as a transmission medium.

  When performing power line carrier communication between the communication device 12 and the dwelling unit terminal 11, the communication device 12 performs power line carrier communication for both the dwelling unit terminal 11 and the meter-reading terminal 15. In this case, the communication device 12 may function as a packet repeater that transmits a communication signal having the same content to the dwelling unit terminal 11 after receiving the communication signal from the meter-reading terminal 15.

  That is, the power line communication interface 121 is provided with a signal processing unit 122 that transmits the same communication signal after receiving the communication signal of the power line carrier communication. Here, since the communication from the communication device 12 to the dwelling unit terminal 11 is short-distance communication in the dwelling unit 101, the signal power of the communication signal can be reduced.

  As described above, by providing the distribution device 21 with the communication device 12 that functions as a packet relay, the distance of the communication path between the meter reading terminal 15 that acquires meter reading information from the power meter 20 and the communication device 12 is short. Thus, the signal power of the communication signal can be reduced in this communication path. And since the distance of the communication path 2 between the communication apparatus 12 and the dwelling unit terminal 11 also becomes short, the signal power of the communication signal which transmits this communication path 2 can be made small. In other words, it is easier to ensure communication quality than when performing power line carrier communication between the meter-reading terminal 15 and the dwelling unit terminal 11 without the communication device 12 interposed.

  The dwelling unit terminal 11 includes a display (not shown) such as a liquid crystal display and an input operation unit (not shown) such as a push button switch, and presents the meter reading information on the display by receiving the meter reading information. can do. A touch panel may be used for the display and the input operation unit. Since meter-reading information is the amount of electric power consumption for every fixed time, it is desirable to show the integrated value of the amount of electric power consumption (the integrated value from the start of use or the integrated value for one month) on the display together with the meter-reading information. In addition, when the integrated value for one month is presented on the display device, it is desirable to present the electricity bill together.

  If the aggregation device 13 has acquired the unit price information of the electricity charges, each dwelling unit terminal 11 can acquire the unit price information of the electricity charges from the aggregation device 13 via the local area communication network 1. Further, the aggregation device 13 acquires unit price information from the management device 30 described later. Each dwelling unit terminal 11 stores the unit price information of the electricity bill acquired from the aggregation device 13 and calculates the electricity bill from the integrated value of the power consumption and the unit price information of the electricity bill. For example, the integrated value for one month is calculated based on the power consumption for each one-hour time period acquired from the meter-reading terminal 15 and the unit price information of the electricity bill stored in the dwelling unit terminal 11.

  The dwelling unit terminal 11 has a function of transferring meter reading information acquired from the meter reading terminal 15 via the communication device 12 to the aggregation device 13. As described above, the dwelling unit terminal 11 can communicate with the aggregation device 13 via the local area communication network 1. Moreover, since the local area communication network 1 is a wired communication network as a core facility of the apartment house 10 using a dedicated line, if the dwelling unit terminal 11 tries to transfer the meter reading information to the aggregation device 13, the communication path 2 Protocol conversion to the local communication network 1 is required.

  That is, the dwelling unit terminal 11 is provided with a power line communication interface 111 that forms a communication path 2 for transmitting a communication signal of power line carrier communication with the power line communication interface 121 of the communication device 12. In addition, the dwelling unit terminal 11 includes a communication interface 112 that communicates with the aggregation device 13 via the local communication network 1. A protocol conversion unit 113 is provided between the power line communication interface 111 and the communication interface 112 to convert a communication protocol between the communication path 2 and the local communication network 1.

  As described above, since the protocol conversion unit 113 is provided in the dwelling unit terminal 11, the meter reading information from the meter reading terminal 15 in the collective housing 10 is aggregated by using the local area communication network 1 which is a basic facility in the collective housing 10. It will be transferred to the device 13. In the aggregation device 13, the meter reading information measured by the power meter 20 provided in each dwelling unit 101 of the apartment house 10 is aggregated.

  The aggregation device 13 has a function of transferring meter reading information to an external management device 30 through the public network 3 such as the Internet. The management device 30 may be operated by an electric power company or operated by an energy management company other than the electric power company. In the illustrated example, a case where the energy management company operates the management device 30 is shown, and communication via the public network 3 is performed between the management device 31 operated by the power company and the management device 30 operated by the energy management company. It is possible.

  The energy management company is a business operator that mediates between each customer of the collective housing 10 and the power company. The energy management company pays the electric power company a price corresponding to the amount of electric power consumed in the entire housing complex 10, and each consumer in the housing complex 10 consumes the electric power consumed in each individual unit 101. Collection of consideration for.

  Therefore, the power consumption measured by the power meter 20 provided in each dwelling unit 101 is managed by the management device 30 operated by the energy management company. On the other hand, the power consumption measured by the power meter 25 for power purchase disposed in the electrical room 103 in the apartment house 10 is managed by the management device 31 operated by the power company.

  The measurement result of the power meter 25 is transmitted to the management device 31 via the communication path 4 laid together with the power distribution network 24. For the communication path 4, for example, an optical fiber cable is used. Therefore, in the illustrated example, an ONU (Optical Network Unit) 32 is connected to the communication path 4. Further, in order to form a communication path between the power meter 25 and the ONU 32, a communication master device 33 is attached to the ONU 32, and a communication slave device 34 is attached to the power meter 25. The communication path between the communication master unit 33 and the communication slave unit 34 is a wired communication path using a power line carrier communication technology or the like according to the communication quality in the installation environment, and a wireless communication path of various standards using radio waves as a medium. Are used as appropriate. The power meter 25 is a so-called smart meter, and transmits a measurement result to the management device 31 by communicating with an ONU (Optical Network Unit) connected to the communication path 4.

  In the electric power meter 25, high voltage electric power such as 6600 V received by the apartment house 10 is measured, and the electricity charge for the amount of electric power measured by the electric power meter 25 is charged from the electric power company to the energy management company. That is, the electric power company makes a contract for high-voltage power such as 6600 V with the energy management company, and does not make a contract with each consumer of the apartment house 10. On the other hand, the energy management company makes a contract equivalent to a contract of 100V / 200V low-voltage power with each customer of the apartment house 10. As the contracts are hierarchized in this way, the electric power company only needs to make a contract with the energy management company, so the contract work becomes simple and the electricity fee only has to be collected from the energy management company. It is also easy to manage the collection of electricity charges.

  In addition, the energy management company purchases relatively cheap electric power from the electric power company through a collective contract for high-voltage electric power, distributes this electric power to each consumer in the collective housing 10, and collects electricity charges from each consumer. can get. Also, since it corresponds to the work of collecting electricity charges from each consumer, profits can be gained by charging service charges to the power company or discounting the purchase price of high-voltage power It becomes possible.

  The configuration example described above employs a configuration in which the communication device 12 is interposed between the meter-reading terminal 15 and the dwelling unit terminal 11 that is an information terminal, and the meter-reading information is relayed by the communication device 12. However, since the meter-reading terminal 15 is connected to the dedicated distribution line 221, and the dedicated distribution line 221 is branched from the distribution line 22, the communication signal output from the meter-reading terminal 15 is transmitted using the distribution line 22 as a communication path. Is done. Therefore, the meter-reading terminal 15 needs to designate a transmission destination in the case of communication.

  When the transmission destination is the dwelling unit terminal 11 belonging to the same dwelling unit 101, the communication signal only needs to reach the communication device 12, so the meter-reading terminal 15 relatively reduces the output signal power. When the transmission destination is not the dwelling unit terminal 11 belonging to the same dwelling unit 101, the meter-reading terminal 15 relatively increases the output signal power. In short, the meter-reading terminal 15 makes the signal power of the communication signal whose destination is the dwelling unit terminal 11 belonging to the same dwelling unit 101 smaller than the signal power of the communication signal of the destination that is not the dwelling unit terminal 11 belonging to the same dwelling unit 101. is there.

  Here, direct communication may be performed between the power meter 20 (the meter-reading terminal 15) and the dwelling unit terminal 11 without the communication device 12 interposed. In this case, the communication device 12 becomes unnecessary. When the communication device 12 is omitted, it is desirable to use a communication path by wireless communication instead of power line carrier communication for communication between the meter-reading terminal 15 and the dwelling unit terminal 11. This is because if the power line carrier communication is directly performed between the meter-reading terminal 15 and the dwelling unit terminal 11, a communication path cannot be secured when the main breaker or the branch breaker is shut off. In addition, since the communication device 12 forms a communication path extending between the primary side of the main breaker and the secondary side of the branch breaker, when the communication device 12 is used, the communication path is set even when the main breaker or the branch breaker is shut off. It can be secured. Instead of the communication device 12, a coupler that allows only the signal component of the power line carrier communication to pass can be used.

  In the above configuration, the power meter 20 is provided outside the distribution board 21, but the meter reading value of the power meter 20 is presented to the dwelling unit terminal 11, and it is unnecessary to visually check the meter reading value. It is also possible to incorporate the power meter 20 in the distribution board 21. In this configuration, the communication device 12 is not necessary.

  By the way, in recent years, a charging unit 50 and an authentication device are installed in a parking lot 104 as a shared part of the apartment house 10 in order to charge a storage battery mounted on a vehicle that runs on the power of the storage battery, such as an electric vehicle or an electric motorcycle. 60 and so on. The authentication device 60 is disposed within a predetermined space area for the charging unit 50, that is, within the range of the parking lot 104. Here, there are many cases where a plurality of charging units 50 are installed in the parking lot 104 and the residents of the apartment house 10 share the charging units 50. Since the charging unit 50 has a relatively long occupation time, when the charging unit 50 is shared, it is desirable to reserve the use in order to avoid competition or collision of the use time.

  Below, the technique for reserving and using the charging unit 50 is demonstrated. In describing the technology for use reservation, first, the configuration of the charging unit 50 will be described, and further, the technology for restricting the use of the charging unit 50 will be described. By using the technology that restricts the use of the charging unit 50, the charging unit 50 can be used in accordance with the use reservation. Further, the dwelling unit terminal 11 is used to reserve the use of the charging unit 50.

  As shown in FIG. 2, the charging unit 50 receives power from the distribution line 22 and generates a DC power necessary for charging the storage battery, and monitors the charge state of the storage battery mounted on the vehicle. A charge monitoring unit 52. Furthermore, the charging unit 50 includes a communication interface 53 so that it can communicate with the dwelling unit terminal 11. Power line carrier communication is used for communication between the charging unit 50 and the dwelling unit terminal 11. However, since the communication path between the charging unit 50 and the dwelling unit terminal 11 becomes relatively long, communication quality may not be ensured by power line carrier communication. In that case, you may make it communicate between the charging unit 50 and the dwelling unit terminal 11 using the path | route which passes along the local communication network 1 via the aggregation apparatus 13. FIG. In addition, the charging unit 50 includes an interface 54 for connecting to the authentication device 60. This interface 54 may also be used as the communication interface 53.

  The charging unit 50 displays the charging state monitored by the charging monitoring unit 52 on a display unit (not shown) of the dwelling unit terminal 11. The charge monitoring unit 52 includes a charge amount measurement unit 521 that measures the amount of charge charged in the storage battery, a remaining capacity measurement unit 522 that measures the amount of charge (remaining capacity) accumulated in the storage battery, and the like. Furthermore, the charge monitoring unit 52 includes a power metering unit 523 that measures the amount of power when the storage battery is charged from the charging unit 50. The power metering unit 523 measures the amount of power flowing into the power conversion unit 51 when charging the storage battery. As a result, the charge amount measured by the charge amount metering unit 521 depends on the conversion efficiency of the power conversion unit 51. This means that the amount of power that is added to the power loss is measured. However, when the conversion efficiency of the power conversion unit 51 is regarded as constant, one of the charge amount measurement unit 521 and the power measurement unit 523 may be omitted.

  When the charging unit 50 is used, authentication by the authentication device 60 is necessary. The authentication device 60 stores current identification information in which a valid period issued for identifying a user is set. For the current identification information, for example, a usage number composed of a numerical string of about 4 to 6 digits is used. A method for issuing the current identification information will be described later.

  The authentication device 60 includes an input unit 61 such as a numeric keypad, a user storage unit 62 in which the current identification information and the validity period are registered, and verification that collates the input information input from the input unit 61 with the user storage unit 62. Part 63. The authentication device 60 includes a communication interface that communicates with the aggregation device 13 and an interface 64 that notifies the charging unit 50 of charging when the collation result by the collation unit 63 satisfies the conditions described below. 65, and further includes a clock unit 66 for measuring the current time.

  The collation unit 63 collates the input information input from the input unit 61 with the current identification information registered in the user storage unit 62. When the current identification information that matches the input information exists in the user storage unit 62, the collation unit 63 determines whether the input information is valid or invalid based on the validity period of the current identification information. For example, it is determined that the input information is valid when the time when the input information is input is within a predetermined time range including the start time of the valid period (for example, 10 minutes before and 20 minutes after the start time). To do. As the time when the input information is input to the input unit 61, the current time measured by the clock unit 66 is used.

  When the collation unit 63 determines that the current identification information matching the input information exists in the user storage unit 62 and the time when the input information is input satisfies the predetermined condition as described above, the authentication device 60 The interface 64 notifies the charging unit 50 that charging is permitted. The period during which the charging unit 50 performs charging is within the valid period range of the current identification information. That is, the interface 64 notifies the charging unit 50 of the permission of charging, and also notifies the validity period of the current identification information that matches the input information input from the input unit 61 of the authentication device 60. The interface 64 is configured such that one authentication device 60 can be shared by a plurality of charging units 50. That is, either a configuration in which a plurality of interfaces 64 in which each charging unit 50 is connected one-to-one or a configuration in which a single interface 64 to which a plurality of charging units 50 are connected is provided is adopted. In the latter configuration, the charging unit 50 is specified using identification information individually set for each charging unit 50.

  When the vehicle is connected and the start of charging is instructed within the effective period notified from the authentication device 60, the charging unit 50 starts charging the storage battery mounted on the vehicle. As an end condition of charging, it can be considered to end with full charge. However, when full charge is not reached within the effective period, the charge ends with the end of the effective period.

  Alternatively, the amount of charge to be replenished by the user may be set, and charging may be terminated upon completion of charging of the set amount of charge. The user determines the amount of charge to be replenished based on the remaining capacity of the storage battery measured in the vehicle. Alternatively, the charging unit 50 may be provided with a function of determining a necessary charge amount by designating conditions such as a travel distance and a destination. Even when charging is performed with the set charge amount, if the desired charge amount is not reached within the valid period, the charge is terminated at the end of the valid period.

  Incidentally, the authentication device 60 includes the communication interface 65 that communicates with the aggregation device 13 as described above. It is desirable that the aggregation device 13 and the authentication device 60 communicate through the local communication network 1. In many housing complexes 10, the local area communication network is also laid in the parking lot 104, which is a common part, but if the local area communication network 1 is not laid in the parking lot 104, the aggregation device 13, the authentication device 60, Communication by power line carrier communication may be performed.

  The aggregation device 13 transmits the current identification information registered in the user storage unit 62 using a communication function with the authentication device 60. The aggregation device 13 includes a reservation processing unit 131 that responds to an application for a reservation from the dwelling unit terminal 11 regarding the use of the charging unit 50, and a reservation storage unit 132 that stores the content of the reservation when the reservation processing unit 131 accepts the reservation. Is provided.

  In this embodiment, when reserving the use of the charging unit 50, the input operation unit is interactively operated using the display unit and the input operation unit of the dwelling unit terminal 11. A screen displayed on the display unit for reserving the use of the charging unit 50 is generated by the reservation processing unit 131, and a use reservation is made by operating the input operation unit in accordance with an instruction displayed on the screen.

  In the dwelling unit terminal 11, at the time of making a reservation for using the charging unit 50, at least one of a time at which usage is desired to start and a time at which usage is desired is designated. Further, the amount of charge to be charged may be set, or the type of vehicle may be set. When setting the kind of vehicle, it uses as information which can specify the power capacity of the storage battery mounted in the vehicle.

  The reservation processing unit 131 determines whether or not the time from the start to the end is within a prescribed upper limit when both the start time and the end time are specified. A response indicating that is not accepted. Further, when only the start time is designated, the end time is a predetermined time after the start time, and when only the end time is designated, the start time is a predetermined time before the end time. When the charge amount and the vehicle type are not specified, a predetermined time is used as the predetermined time. In addition, when the charge amount and the type of vehicle are specified together with the start time or the end time, an approximate time required for charging is obtained from the charge amount to be charged, and the obtained time is used as the specified time.

  As described above, when the time zone in which the charging unit 50 is to be used is obtained by designation from the dwelling unit terminal 11, the reservation processing unit 131 compares the obtained time zone with the reservation storage unit 132, and It is determined whether or not the charging unit 50 can be used in the band. That is, the reservation processing unit 131 confirms whether or not a reservation is possible by referring to the reservation storage unit 132 when there is an application for reservation from the dwelling unit terminal 11.

  If the charging unit 50 can be used in the time period determined by the designation from the dwelling unit terminal 11, the reservation processing unit 131 provides the current identification information necessary for using the charging unit 50 to the dwelling unit terminal 11 that has requested the reservation. Issue. As described above, the validity period is set in the current identification information. This valid period is a time zone obtained by the reservation processing unit 131 to collate with the reservation storage unit 132, and is a time zone between the start time and the end time of use of the charging unit 50. The current identification information cannot be used at the end time of the valid period.

  When the reservation processing unit 131 issues the current identification information in which the validity period is set, the reservation processing unit 131 returns a response to accept the reservation to the dwelling terminal 11 and causes the dwelling terminal 11 to display the current identification information. In addition, the reservation processing unit 131 registers the issued current identification information and the valid period in the reservation storage unit 132 as a new reservation. Note that the current identification information is deleted from the reservation storage unit 132 when the end time of the valid period has passed.

  The reservation processing unit 131 manages the validity period of the current identification information stored in the reservation storage unit 132 and has a function of transferring the current identification information to the user storage unit 62 of the authentication device 60 according to the validity period of the current identification information. doing. The timing for transferring the current recognition information is selected, for example, every predetermined time, every predetermined time of the day, or a predetermined time before the start time of the effective period. When transferring the current identification information from the reservation storage unit 132 to the user storage unit 62, the validity period set in the current identification information is also transferred.

  As described above, when reserving the use of the charging unit 50, the dwelling unit terminal 11 is used to communicate with the aggregation device 13 through the local area communication network 1 and the current identification information is issued to the dwelling unit terminal 11. At this time, the current identification information and the validity period are registered in the reservation storage unit 132 of the aggregation device 13, and the current identification information is transferred to the authentication device 60 according to the validity period. Thereafter, when the user of the charging unit 50 inputs the current identification information from the input unit 61 of the authentication device 60 according to the validity period of the current identification information, the charging unit 50 can be used.

  By the way, since the electric power used by the charging unit 50 for charging the storage battery is electric power purchased by the user (customer), the user needs to pay a price (electricity charge). The electricity bill is determined based on the amount of power measured by the power metering unit 523 provided in the charging unit 50. Since the power metering unit 523 is provided in the charging unit 50, a charge collection device may be attached so as to pay the price when the charging is completed. However, in this embodiment, the power metering unit 523 is provided. A configuration is adopted in which the amount of power measured in step 1 is transferred to the dwelling unit terminal 11.

  As described above, since the dwelling unit 11 has a function of acquiring the amount of power measured by the power meter 20 as meter reading information, the amount of power measured by the power metering unit 523 can be handled as similar information. It is. However, since the power meter 20 and the dwelling unit terminal 11 correspond one-on-one, the charging unit 50 and the dwelling unit terminal 11 do not correspond one-to-one, and thus the power meter 20 and the dwelling unit terminal 11 are measured by the power metering unit 523 of the charging unit 50. The electric energy is transmitted using the current identification information. Since the dwelling unit terminal 11 is provided with the current identification information issued at the time of the reservation, the amount of power can be received from the power metering unit 523 by using this information. By performing communication using the current identification information in which the validity period is set, the possibility of leakage of communication contents is reduced, and safe communication is possible.

  The dwelling unit terminal 11 is provided with a function of adding the amount of power obtained from the meter reading information acquired from the power meter 20 and the amount of power received from the power metering unit 523. The dwelling unit terminal 11 transmits the combined electric energy as meter reading information to the aggregation device 13 through the local area communication network 1. Through such processing, a consumer who uses the charging unit 50 is charged for the total amount of power generated by using the charging unit 50 and the amount of power used in the dwelling unit 101. . In the above configuration example, the case where the use unit of the charging unit 50 is reserved using the dwelling unit terminal 11 as the information terminal has been described. However, an information terminal for making a use reservation is installed in the parking lot 104 which is a common unit. May be. The information terminal can be provided separately from the charging unit 50 and the authentication device 60, but may be incorporated in the charging unit 50 or the authentication device 60. When an information terminal is arranged in the parking lot 104, a ticket printed with the current identification information and the validity period may be issued.

  By the way, in this embodiment, as shown in FIG. The photovoltaic power generation facility 40 stores a solar cell panel 41 disposed on the roof or wall of the apartment house 10, a power conditioner 42 that converts DC power output from the solar cell panel 41 into AC power, and stores surplus power. The storage battery 43 is provided. The power conditioner 42 also has a function of managing charging and discharging of the storage battery 43, and can communicate with other devices connected to the distribution line 22 by power line carrier communication.

  The solar power generation facility 40 is connected so as to be connected to the grid. In the illustrated example, the photovoltaic power generation facility 40 (the output of the power conditioner 42) is connected to the system on the secondary side of the step-down transformer 23. In the present embodiment, it is assumed that all the electric power generated by the solar power generation facility 40 is sold to an electric power company, and the amount of electric power generated by the solar power generation facility 40 and reversely flowing to the distribution network 24 is It is measured by a power meter 26 for selling power arranged in the electric room 103 of the apartment house 10 or the like.

  The measurement result of the power meter 26 for power sale is transmitted to the management device 31 through the communication path 4 in the same manner as the power meter 25 for power purchase. That is, the power meter 26 transmits the measurement result to the communication master unit 33 attached to the ONU 32 through the communication slave unit 34, and further transmits the measurement result to the management device 31 through the ONU 32 and the communication path 4.

  As described above, when all the power generated by the solar power generation facility 40 is purchased, if other solar power generation facilities are also connected to the grid, the power supplied to the distribution network 24 is generated. May be excessive at peak power. Therefore, the storage battery 43 may be stored at the peak of generated power, and the power of the storage battery 43 may be sold when the generated power is insufficient.

  Alternatively, the power generated by the solar power generation facility 40 may be used in the apartment house 10, and when surplus power that cannot be consumed is generated, the power may be sold or stored in the storage battery 43. In addition, if the surplus power generated by the solar power generation facility 40 is used in the common part of the apartment house 10, the common service cost of the apartment house 10 can be reduced. In addition, if the electric power derived from the photovoltaic power generation facility 40 is used as the electric power charged from the charging unit 50 to the storage battery mounted on the vehicle, combined with the use of the electric vehicle or the electric motorcycle, the carbon dioxide emission can be reduced. Will contribute.

  Since the solar power generation facility 40 is operated by an energy management company, the energy management company collects the costs associated with the installation and maintenance of the solar power generation facility 40 by obtaining a price for the power generated by the solar power generation facility 40. can do. In addition, since the energy management company uses the apartment house 10 as an installation place of the photovoltaic power generation equipment 40, the electricity fee for the consumer of the apartment house 10 is used by using a part of the profit obtained by the power sale as a source. By discounting, the usage amount of the place may be returned to the consumer.

1 Local communication network 10 Apartment house (building)
11 Dwelling unit terminal (information terminal)
13 Aggregation device 20 Electric power meter 50 Charging unit 60 Authentication device 101 Dwelling unit (space)
104 Parking lot (shared area)
523 Electricity meter

Claims (3)

A charging unit for charging a storage battery of a vehicle installed in a common part shared by the consumer in a building having a plurality of spaces each occupied by a consumer of electric power;
An authentication device arranged in a predetermined space area where the charging unit is installed and authenticating a user of the charging unit;
An aggregation device that communicates with an information terminal installed in each space through a local communication network laid in the building;
The information terminal
A function of receiving meter reading information from a power meter that measures the amount of power used in each of the plurality of spaces;
The charging system includes a function of receiving a measured amount of power from a power metering unit that measures power used for charging the storage battery. The aggregation device has a function of acquiring a unit price of electricity charges,
The information terminal further includes a function of calculating an electricity bill from at least one of the amount of electricity obtained from the meter reading information and the amount of electricity received from the power measurement unit, and the unit price of the electricity bill obtained from the aggregation device. The charging system according to claim 1, wherein:   The said information terminal is further provided with the function which adds up the electric energy obtained from the meter-reading information acquired from the said electric power meter, and the electric energy received from the said electric power measurement part, The Claim 1 or 2 characterized by the above-mentioned. Charging system.

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