JP2012226416A - Charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system capable of selecting a charging station in consideration of a power source thereof.SOLUTION: The charging system comprises: a HEMS (Home Energy Management System) 12 installed in a building at a departure point of a vehicle such as a hybrid vehicle and an electric vehicle; BEMSes (Building Energy Management System) 14A to 14C installed in buildings at vehicle charging stations etc.; and a center server 16 which retrieves information on relay points (the BEMSes 14A to 14C) to charge necessary power for reaching a destination according to a request from the HEMS 12 at the departure point, selects preferentially one of the relay points having a lot of power generation or power storage of a solar power generation device, and sends back a retrieval result.

Description

  The present invention relates to a charging system, and more particularly to a charging system for charging a storage battery mounted on a vehicle such as a hybrid vehicle or an electric vehicle using electric power of a power generation device using natural energy such as a solar power generation device.

  In recent years, in consideration of environmental problems and the like, vehicles such as hybrid vehicles and electric vehicles have become widespread instead of vehicles using fossil fuels. In addition, these automobiles are equipped with a vehicle storage battery that stores electric power for traveling, and various electric charging technologies have been proposed for charging using electric power such as system power.

  For example, in the technique described in Patent Document 1, the position information of the electric vehicle and the remaining capacity of the fuel are received, the distance that can be traveled is calculated from the remaining capacity of the fuel and the average travel distance, and the position information of the charging station And a charging station information providing server for extracting information on charging stations existing within a travelable distance from the position information of the electric vehicle and transmitting the information to the outside.

JP 2007-148590 A

  However, in the technique described in Patent Document 1, it is possible to grasp the charging station within the travelable distance of the electric vehicle, but consider the power source for charging the vehicle storage battery of the extracted charging station. However, there is room for improvement considering environmental issues.

  The present invention has been made in consideration of the above facts, and an object of the present invention is to provide a charging system capable of selecting a charging station in consideration of a power source of the charging station.

  In order to achieve the above object, the invention according to claim 1 is a first charging stand connected to a power generation device that generates power using natural energy and charges a vehicle storage battery that stores power for traveling, and The power generation device is not connected, provided at each of a plurality of charging stations including a second charging station that charges the vehicle storage battery, and a relay terminal that controls charging of the vehicle storage battery; In order to request the input means for inputting the remaining amount of the storage battery for the vehicle and the destination, and information on the charging station for charging the power required for arrival at the destination, the input result of the input means is Acquiring to acquire information relating to a power source including a terminal device comprising a transmitting means for transmitting and a receiving means for receiving information on the requested charging station, and presence or absence of the power generation device at the relay terminal And the first charging station out of the charging stations based on the input result of the input unit transmitted from the transmitting unit, the current location of the terminal device, and the acquisition result of the acquiring unit. It is characterized by comprising a center server comprising selection means for selecting as a relay point, and reply means for returning information on the charging station selected by the selection means to the reception means.

  According to the first aspect of the present invention, the plurality of charging stations that charge the vehicle storage battery are connected to the first charging station to which the power generation device that generates power using natural energy is connected, and the power generation device is not connected. A second charging station is included. Each charging stand is provided with a relay terminal that controls charging of the vehicular storage battery.

  The terminal device includes an input unit, a transmission unit, and a reception unit. The input unit inputs the remaining amount of the vehicle storage battery and the destination by the input unit, and the transmission unit is necessary for arrival at the destination. In order to request charging station information for charging power, the input result of the input means and the current location information are transmitted. Then, the receiving means receives the requested charging station information.

  The center server also includes an acquisition unit, a selection unit, and a reply unit. The acquisition unit acquires information about the power source including the presence or absence of the power generation device at the relay terminal. The selection unit includes a transmission unit of the terminal device. The first charging station is given priority among the plurality of charging stations based on the input result (remaining amount of vehicle storage battery and destination) transmitted from the terminal, the current location of the terminal device, and the acquisition result of the acquiring unit. And selected as a relay point. Then, in the reply unit, the information on the charging station selected by the selection unit is returned to the receiving unit of the terminal device.

  That is, by requesting charging station information from the terminal device, the center server selects a charging station necessary for arrival at the destination. At this time, the first charging station to which the power generator is connected as a power source is selected. Since the priority is selected, an environmentally friendly charging station can be selected in consideration of the power source of the charging station.

  In the invention of claim 1, as in the invention of claim 2, the first charging stand is connected as a power generator with a solar power generator that generates power using sunlight as natural energy. The relay terminal provided in the first charging station further includes notification means for notifying the center server of the power generation status of the solar power generation device, and the selection means is configured to generate solar power based on the notification result of the notification means. You may make it preferentially select the charging stand in which the power generation of an apparatus can be used.

  According to a third aspect of the present invention, the terminal device further includes a charging device capable of adjusting a charging amount for charging the vehicle storage battery based on the charging station information received by the receiving unit. Also good.

  Further, according to the first aspect of the present invention, as in the fourth aspect of the present invention, the first charging stand is further connected to a storage battery that stores electric power generated by the power generation device, and the selection means includes: You may make it preferentially select the charging stand by which electric power is stored by the storage battery. In this case, as in the fifth aspect of the invention, the relay terminal provided in the first charging station further includes notification means for notifying the storage amount of the storage battery to the center server. Based on the notification result of the notification means, a charging station with a large amount of stored electricity may be preferentially selected from charging stations in which electric power is stored in the storage battery.

  Further, in the invention of claim 2, as in the invention of claim 6, the selection means changes the power generation status of the solar power generation apparatus notified by the notification means after returning the information on the charging station by the reply means. In this case, the relay point may be reselected and the reply unit may reply again with the reselection result of the selection unit.

  Further, in the invention of claim 1, as in the invention of claim 7, the first charging stand is connected to a solar power generation device that generates power using sunlight as natural energy, and the center server is Weather forecast acquisition means for acquiring a weather forecast for the area of the first charging station is further provided, and the selection means can use the generated power of the photovoltaic power generation apparatus based on the weather forecast acquired by the weather forecast acquisition means. A certain charging station may be selected. In this case, as in the invention described in claim 8, when the weather forecast acquired by the acquisition unit changes after the reply unit returns the information on the charging station, the selection unit changes the weather forecast to the changed weather forecast. Based on this, the relay point may be reselected, and the reply unit may retransmit the reselection result of the selection unit.

  As described above, according to the present invention, there is an effect that it is possible to provide a charging system capable of selecting a charging station in consideration of the power source of the charging station.

It is a block diagram which shows schematic structure of the charging system concerning embodiment of this invention. It is a block diagram which shows the schematic structure relevant to HEMS and BEMS in the charging system concerning embodiment of this invention. It is a block diagram which shows the structure of HEMS and BEMS in the charging system concerning embodiment of this invention. It is a block diagram which shows the structure of the center server in the charging system concerning embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed by HEMS in the charging system concerning embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed by BEMS in the charging system concerning embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed in the center server in the charging system concerning embodiment of this invention. It is a figure for demonstrating the specific example of the process performed with the charging system concerning embodiment of this invention. It is a figure which shows an example of the flow of a process of the center server 16 in the case of utilizing a weather forecast.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a charging system according to an embodiment of the present invention.

  As shown in FIG. 1, a charging system 10 according to an embodiment of the present invention includes a home energy management system (HEMS) 12, a building energy management system (BEMS) 14 (14A to 14C), and a center server 16 provided on the Internet or the like. The network 18 is configured to be connected to each other and can exchange information.

  The HEMS 12 is provided in a building at the starting point of a vehicle such as a hybrid vehicle or an electric vehicle, monitors the power of the building, controls the flow of power, etc. (for example, controls the power source and the power supply destination), The BEMS 14 is provided in a building such as a charging station of an automobile and performs control of power during charging. The center server 16 receives power required to reach the destination in response to a request from the HEMS 12 at the departure point. Is searched for, information on the amount of power generated by solar power generation or the amount of power stored in the storage battery is preferentially selected, and the search result is returned.

  FIG. 2 is a block diagram showing a schematic configuration related to the HEMS 12 and the BEMS 14 in the charging system 10 according to the embodiment of the present invention. The HEMS 12 and the BEMS 14 have the same basic configuration and will be described with reference to FIG. Note that the solid line in FIG. 2 indicates a power line, and the dotted line indicates an information line.

  The building 20 provided with the HEMS 12 or the BEMS 14 is provided with a distribution board 22, and the vehicle storage battery 28 mounted on the automobile 26 is charged by supplying power from the distribution board 22 to the charging stand 24. It is possible.

  The distribution board 22 is connected to the system power 30, the storage battery 32, and the solar power generation device 34 as power sources, and at least any one power is used as a power source for charging the vehicle storage battery 28. The Note that, depending on the relay point, there may be a relay point where at least one of the storage battery 32 and the solar power generation device 34 is not connected as a power source. However, in FIG. An example of a connected relay point is shown.

  The solar power generation device 34 connected to the distribution board 22 is configured to include a power control system (not shown), and the DC power generated by the solar power generation device 34 is converted into AC power by the power control system. By being converted and supplied to the distribution board 22, power is supplied to the building 20 and the charging stand 24. In addition, when it is not necessary to supply electric power to the household appliances in a building, housing equipment, etc., it is good also as a structure which supplies direct-current generated electric power directly to the storage battery 32 or the charging stand 24 (vehicle storage battery 28).

  Moreover, various storage batteries, such as a lithium ion battery, a lead battery, and a sodium battery, can be applied to the storage battery 32 provided in the building 20.

  Furthermore, HEMS 12 and BEMS 14 are connected to the distribution board 22, and energy management and control in the building are performed by the HEMS 12 and BEMS 14. That is, the HEMS 12 and the BEMS 14 control the distribution board 22 to supply the charging station 24 and the building 20 using the generated power of the solar power generation device 34, the stored power of the storage battery 32, or the system power 30 as a power source. Control power supply ahead.

  Subsequently, a detailed configuration of the HEMS 12 and the BEMS 14 will be described. FIG. 3 is a block diagram showing the configuration of HEMS 12 and BEMS 14 in charging system 10 according to the embodiment of the present invention.

  The HEMS 12 and the BEMS 14 are configured to include a computer and include a CPU 40, a ROM 42, a RAM 44, and an input / output port 46, as shown in FIG. 3, which are buses such as an address bus, a data bus, and a control bus. 48 are connected to each other.

  A display unit 50, an operation unit 52, and a memory 54 are connected to the input / output port 46 as various input / output devices. The display unit 50 and the operation unit 52 may be integrally configured, and the operation unit 52 may apply a touch panel provided in the display unit 50.

  The memory 54 stores various programs for performing control related to power supply in the building 20 and various information for executing the programs. The program stored in the memory 54 is expanded on the RAM 44 and the like, and the CPU 40 is loaded. Various controls are performed by executing.

  Further, the input / output port 46 includes a charge amount detection sensor 56 for detecting the remaining amount of the storage battery 32, a distribution board 22 capable of switching the power source and supply destination of power, and a charging stand for charging the vehicle storage battery 28. 24 etc. are connected.

  The input / output port 46 is connected to the network 18 described above, and can exchange information with the center server 16 and other HEMS 12 and BEMS 14 connected to the network 18.

  In the present embodiment, when the user operates the operation unit 52 of the HEMS 12 and inputs the destination, the detection result of the remaining amount of the vehicle storage battery 28 is detected from the charging station 24 connected to the HEMS 12 at the departure point. The acquired destination, the remaining amount of the vehicle storage battery 28, and the current location information (information such as location information or identification information of the HNES 12) are transmitted to the center server 16 to become a relay site. It has a function of making a transmission request to the center server 16 for information such as the charging station 24 to which the BEMS 14 is connected. Then, information such as the charging station 24 connected to the BEMS 14 serving as a relay point is received from the center server 16 and displayed on the display unit 50 or displayed on a navigation device or the like mounted on the automobile 26. Yes.

  Next, a detailed configuration of the center server 16 will be described. FIG. 4 is a block diagram showing the configuration of the center server 16 in the charging system 10 according to the embodiment of the present invention.

  As shown in FIG. 4, the center server 16 is a general computer in which a CPU 60, a ROM 62, a RAM 64, and an input / output port 66 are connected to each other via a bus 68 such as an address bus, a data bus, and a control bus. It is configured.

  The input / output port 66 is connected to a display 70, a mouse 72, a keyboard 74, a hard disk (HDD) 76, and a disk drive 80 for exchanging information from various disks 78 as various input / output devices.

  Further, the above-described network 18 is connected to the input / output port 66, and information can be exchanged with the HEMS 12 and the BEMS 14 connected to the network 18.

  The center server 16 has a function of receiving a request from the HEMS 12 as described above, searching for information such as the charging station 24 to which the BEMS 14 serving as a relay point is connected, and transmitting the information to the requesting HESM 12. . Specifically, various information including the position information of the charging station 24 connected to the BEMS 14 serving as a relay point is stored or acquired from the BEMS 14, the destination transmitted from the HEMS 12, the remaining amount of the vehicle storage battery 28, and the current location Based on the information, the BEMS 14 serving as a relay point (a relay point in the vicinity of the route in the route to the destination) at a position where the vehicle storage battery 28 can travel is searched, and the search result is sent to the HEMS 12 of the request source. Reply to At this time, the center server 16 preferentially selects the BEMS 14 serving as a relay site including the solar power generation device 34, and further preferentially selects the BEMS 14 that has a large amount of power generation or a large amount of power storage. ing. In addition, you may make it select BEMS14 used as the relay place provided with the storage battery 32 preferentially. Hereinafter, a case where a relay station including the solar power generation device 34 is preferentially selected and a relay site having a large amount of power generation is selected from the relay sites including the solar power generation device 34 will be described as an example.

  Next, specific examples of processing performed in each part in the charging system 10 configured as described above will be described.

  First, a specific example of processing performed in the HEMS 12 will be described. FIG. 5 is a flowchart showing an example of a flow of processing performed in the HEMS 12 in the charging system 10 according to the embodiment of the present invention. Note that the processing of FIG. 5 is shown as an example that starts when an operation such as a route search instruction when going out by car is performed via the operation unit 52.

  In step 100, a predetermined destination input screen is displayed, and the process proceeds to step 102. The destination input screen may be a screen for inputting a destination from a map screen used in a navigation device or the like, or a screen for inputting various information such as an address as a destination.

  In step 102, it is determined by the HEMS 12 whether or not the input of the destination has been completed. For this determination, for example, it is determined whether or not a predetermined operation has been performed by inputting a destination, waits until the determination is affirmed, and the process proceeds to step 104.

  In step 104, the current location is detected, and the routine proceeds to step 106. The detection of the present location may be registered in advance when the HEMS 12 is installed, and the registered one may be read out, or from a navigation device mounted on the automobile via the charging stand 24 (or a communication means provided separately) or the like. The HEMS 12 may acquire the current location, or the HEMS 12 may be provided with a positioning device such as a GPS (Global Positioning System) antenna to acquire the current location.

  In step 106, the remaining amount of the vehicle storage battery 28 is detected, and the routine proceeds to step 108. The charge stand 24 detects the remaining amount of the vehicle storage battery 28, and the HEMS 12 acquires the detection result from the charge stand 24.

  In Step 108, the input destination, the detected current location, and the detected remaining amount of the vehicle storage battery 28 are transmitted to the center server 16, and the process proceeds to Step 110. That is, by transmitting these pieces of information to the center server 16, information on the charging station 24 (BEMS 14) for charging power necessary for arrival at the destination is requested.

  In step 110, it is determined whether or not the relay point information has been received from the center server 16, and the process waits until the determination is affirmed and the process proceeds to step 112. That is, the center server 16 is requested to search for a relay point, and the process waits until a reply to the request is received and proceeds to step 112.

  In step 112, the received relay point information is displayed on the display unit 50, and the relay point information is transmitted to the navigation device or the like of the vehicle 26 so that it can be displayed on the vehicle 26, and a series of processing in HEMS is performed. Exit. As a result, since a relay point where the vehicle can run with the remaining amount of the vehicle storage battery 28 is displayed, it is possible to reach the destination via the relay point. In step 112, the information is displayed on the display unit 50 and the relay point information is transmitted to the automobile 26. However, only one of them may be used.

  Next, a specific example of processing performed in the BEMS 14 serving as a relay point will be described. FIG. 6 is a flowchart showing an example of the flow of processing performed by the BEMS 14 in the charging system according to the embodiment of the present invention.

  In step 200, the amount of power stored in the storage battery 32 provided at the relay point is detected, and the amount of power generated by the solar power generation device 34 and the like is detected, and the process proceeds to step 202. Note that, at a relay site that does not include a power generation device such as the solar power generation device 34, only the amount of stored electricity is detected, and the relay site that does not include the storage battery 32 skips the step.

  In step 202, the detection result is transmitted to the center server 16, and the process proceeds to step 204.

  In step 204, it is determined whether or not a predetermined time has elapsed. The process waits until the determination is affirmed, and the process proceeds to step 206.

  In step 206, the storage amount and the power generation amount are detected again, and the routine proceeds to step 208. That is, when the amount of power generation at the relay site has changed significantly during a predetermined time, the amount of stored electricity and the amount of power generation are detected again in order to transmit the detection result again.

  In step 208, it is determined whether or not the detection result has changed by a predetermined value or more. If the determination is affirmative, the process proceeds to step 210. If the determination is negative, the process ends.

  In step 210, the detection result of the detected power storage amount and power generation amount is transmitted to the center server 16 and the series of processes is terminated.

  Next, a specific example of processing performed in the center server 16 will be described. FIG. 7 is a flowchart showing an example of the flow of processing performed by the center server 16 in the charging system according to the embodiment of the present invention.

  In Step 300, the destination, current location, and the remaining amount detection results of the vehicle storage battery 28 are received, and the routine proceeds to Step 302. That is, the detection result of the remaining amount of the destination, the current location, and the vehicle storage battery 28 transmitted from the HEMS 12 in the above-described step 108 is received.

  In step 302, the storage amount of each relay point and the detection result of the power generation amount are acquired, and the process proceeds to step 304. That is, the detection result of the storage amount and the power generation amount transmitted from the BEMS 14 in the above-described step 202 is acquired.

  In step 304, relay point information and route search are performed, and the process proceeds to step 306. For example, in the relay point information and route search, first, relay point information from the current location to the destination is extracted, a relay point that can be reached with the remaining amount of the vehicle storage battery 28 is searched, and the searched relay point information is searched. Preferentially extract BEMS14 to which a power generator that generates power using natural energy such as solar power generator 34 is connected, and if there is no such power generator, extract BEMS14 to which a storage battery is connected, From the extracted BEMS 14, a relay point with a large amount of power generation or a relay point with a large amount of power storage is preferentially selected. As fuel efficiency (travel distance per unit power) as a calculation condition at this time, a predetermined value may be used, or it may be registered in advance for each vehicle type. Then, the route to the destination is searched while sequentially searching for the relay point.

  In step 306, the search result is transmitted to the requesting HEMS 12, and the process proceeds to step 308. Thereby, the above-described step 110 in the processing of the HEMS 12 is affirmed.

  In step 308, it is determined whether a re-detection result has been received from the relay station. This determination determines whether or not the detection result of the storage amount and the power generation amount has been retransmitted from the BEMS 14 in the above step 210. If the determination is affirmative, the process proceeds to step 310, and if the determination is negative Ends the processing as it is.

  In step 310, the relay point and route search is performed again, the process proceeds to step 312, and the re-search result is transmitted again to the requesting HEMS 12, and the series of processing ends.

  Here, the above process will be described with a specific example. FIG. 8 is a diagram for explaining a specific example of processing performed in the charging system 10 according to the embodiment of the present invention.

  First, a destination is input by operating the operation unit 52 so that the user operates the navigation device on a predetermined destination input screen displayed on the display unit 50 of the HEMS 12. Then, the detection result of the current remaining amount of the vehicle storage battery 28 is acquired via the charging stand 24, and the destination, the remaining amount of the vehicle storage battery 28, and the current location (position information of the HEMS 12) are used as a relay location search request. Send to server 16.

  As a result, the center server 16 obtains information (power storage amount and current power generation amount) of each relay point in order to respond to the request from the HEMS 12. Then, a relay point that exists between the departure point and the destination is extracted, and a relay point that can travel with the remaining amount of the vehicle storage battery 28 is extracted. Then, a relay station with a large amount of power generation is preferentially selected from the extracted relay stations, a route to the destination is searched, and the search result is returned to the HEMS 12.

  In the HEMS 12, by receiving the route searched by the center server 16, it is possible to know a relay point where the vehicle storage battery 28 can run and to know the route to the destination. In addition, since a relay point where a large amount of power is generated by the solar power generation device 34 or the like is preferentially selected as the relay point, it is possible to charge power with a small amount of CO2 emission.

  In the example of FIG. 8, the remaining amount of the vehicle storage battery 28 at the time of departure is 30%, and the center server 16 searches for a relay point A that can be reached with consumption of 20%, and the vehicle storage battery at the relay point A The example which searched the route | root which charges 28 to 100% and arrives at the destination with 80% of consumption is shown.

  Further, as a return route, an example is shown in which a relay point B that can be reached with a remaining amount of 20% and a consumption amount of 10% is searched, and a return route that is charged to 100% and returns home with a consumption amount of 90% is shown.

  In this way, the center server 16 searches for the relay point and the route and sends it back to the HEMS 12, so that it can be charged at the relay point within the travel range of the vehicle storage battery 28, reach the destination, and return home. It becomes. In addition, when the center server 16 selects a relay point, a relay point that generates a large amount of power generated by the solar power generation device 34 is selected. Can be used.

  By the way, in said embodiment, since it is possible that the electric power generation amount of the solar power generation device 34 changes with the change of the weather etc., in said embodiment, the amount of electrical storage and electric power generation amount are detected again by the BEMS14 side. However, the countermeasure against the change in the power generation amount is not limited to this. For example, the weather forecast is acquired on the center server 16 side, and the relay point and route search result is obtained. If the weather forecast of the relay point changes within a predetermined time after transmission, the relay point and route search may be performed again and the search result may be transmitted to the HEMS 12.

  Here, a specific example of processing performed by the center server 16 when using the weather forecast will be described. FIG. 9 is a diagram showing an example of the processing flow of the center server 16 when using the weather forecast. In addition, in FIG. 9, it demonstrates as a process of the center server 16 when the above-mentioned steps 204-210 in BEMS14 are abbreviate | omitted.

  In Step 400, the destination, current location, and the remaining amount detection results of the vehicle storage battery 28 are received, and the routine proceeds to Step 402. That is, the detection result of the remaining amount of the destination, the current location, and the vehicle storage battery 28 transmitted from the HEMS 12 in the above-described step 108 is received.

  In step 402, the storage amount of each relay point and the detection result of the power generation amount are acquired, and the process proceeds to step 404. That is, the detection result of the storage amount and the power generation amount transmitted from the BEMS 14 in the above-described step 202 is acquired.

  In step 404, the weather forecast is acquired, and the process proceeds to step 406. The weather forecast is acquired from, for example, a weather forecast for each area of the BEMS 14 to which the charging station 24 is connected via a network 18 or the like from a public organization such as the Japan Meteorological Agency.

  In step 406, relay point information and route search are performed, and the process proceeds to step 408. For example, in the relay point information and route search, first, relay point information from the current location to the destination is extracted, a relay point that can be reached with the remaining amount of the vehicle storage battery 28 is searched, and the searched relay point information is searched. Preferentially extract BEMS14 to which a power generator that generates power using natural energy such as solar power generator 34 is connected, and if there is no such power generator, extract BEMS14 to which a storage battery is connected, From the extracted BEMS 14, a relay point with a large amount of power generation or a relay point with a large amount of power storage is preferentially selected. As fuel efficiency (travel distance per unit power) as a calculation condition at this time, a predetermined value may be used, or it may be registered in advance for each vehicle type. Then, the route to the destination is searched while sequentially searching for the relay point.

  In step 408, the search result is transmitted to the requesting HEMS 12, and the process proceeds to step 410.

  In step 410, it is determined whether or not a predetermined time has elapsed. The process waits until the determination is affirmed, and the process proceeds to step 412.

  In step 412, the weather forecast for each region is reacquired from a public institution such as the Japan Meteorological Agency and the process proceeds to step 414.

  In step 414, it is determined whether or not there is a change in the weather forecast. That is, it is determined whether or not there is a change in the amount of power generated by the solar power generation apparatus 34 based on the determination. If the determination is affirmative, the process proceeds to step 416. If the determination is negative, the process ends. .

  In step 416, the storage amount of each relay point and the detection result of the power generation amount are acquired again, and the process proceeds to step 418.

  In step 418, the relay point information and the route are searched again, and the process proceeds to step 420.

  In step 420, the re-search result is transmitted to the requesting HEMS 12, and the process proceeds to step 410. That is, after transmitting the search result, when it is considered that the weather forecast has changed and the amount of power generated by the solar power generation device 34 has changed, information on the charging station 24 to which the BEMS 14 serving as a relay point is connected is displayed. Search again and resubmit. Accordingly, it is possible to reliably select a large number of charging stations 24 with priority.

  In the above-described embodiment, charging of the vehicle storage battery 28 at the departure place is not considered, but the charging station 24 to which the BEMS 14 serving as a relay point received from the center server 16 is connected in the HEMS 12 at the departure place. The charge amount of the vehicle storage battery 28 may be adjusted based on the information. For example, when the distance to the relay point transmitted from the center server 16 is long, traffic congestion is predicted, and the remaining amount when reaching the relay point is less than a predetermined value, the charging station 24 is controlled in the departure place HEMS 12 Then, the vehicle storage battery 28 may be started after the charge amount is adjusted.

10 Charging system 12 HEMS
14 BEMS
16 Center server 18 Network 24 Charging station 26 Automobile 28 Vehicle storage battery 32 Storage battery 34 Solar power generation device 56 Storage amount detection sensor

Claims (8)

A first charging stand that is connected to a power generation device that generates power using natural energy and charges a vehicle storage battery that stores electric power for traveling, and a first charging stand that charges the vehicle storage battery when the power generation device is not connected. A relay terminal that is provided at each of a plurality of charging stations including two charging stations and controls charging of the vehicle storage battery;
Input means for inputting the remaining amount and destination of the vehicle storage battery of the host vehicle, and the input means for requesting information on the charging station for charging power necessary for arrival at the destination. A terminal device comprising: transmission means for transmitting the input result; and reception means for receiving the requested charging station information;
An acquisition unit that acquires information on the power source including the presence or absence of the power generation device at the relay terminal, an input result of the input unit transmitted from the transmission unit, a current location of the terminal device, and an acquisition result of the acquisition unit Based on the charging station, the selecting unit that preferentially selects the first charging station as a relay point, and the reply unit that returns the information on the charging station selected by the selecting unit to the receiving unit And a center server comprising:
With a charging system.   The first charging stand is connected to a solar power generation device that generates power using sunlight as natural energy as the power generation device, and the relay terminal provided in the first charging stand includes the solar power The information processing apparatus further includes notification means for notifying the power generation status of the power generation apparatus to the center server, and the selection means prioritizes the charging station where the generated power of the solar power generation apparatus can be used based on a notification result of the notification means. The charging system according to claim 1, wherein the charging system is selected automatically.   The charging according to claim 1, wherein the terminal device further includes a charging device capable of adjusting a charging amount for charging the vehicle storage battery based on information on the charging station received by the receiving unit. system.   The first charging station is further connected to a storage battery that stores power generated by the power generation device, and the selection unit preferentially selects the charging station in which power is stored in the storage battery. The charging system according to 1.   The relay terminal provided in the first charging station further includes notification means for notifying the storage amount of the storage battery to the center server, the selection means based on a notification result of the notification means, The charging system according to claim 4, wherein the charging station having a large amount of stored electricity is preferentially selected from the charging stations in which electric power is stored in a storage battery.   The selection means reselects the relay point when the power generation status of the solar power generation apparatus notified by the notification means changes after transmitting the charging station information by the reply means, and the reply means The charging stand according to claim 2, which re-replies the reselection result of the selection means.   The first charging station is connected to a solar power generation device that generates power using sunlight as natural energy, and the center server acquires weather forecast acquisition means for acquiring a weather forecast for the area of the first charging station. 2. The charging according to claim 1, further comprising: selecting the charging station where the generated power of the photovoltaic power generation apparatus is usable based on the weather forecast acquired by the weather forecast acquisition unit. system.   When the weather forecast acquired by the weather forecast acquisition unit is changed after the information on the charging station is returned by the reply unit, the selection unit determines the relay station based on the weather forecast after the change. 8. The charging station according to claim 7, wherein the charging unit is selected again, and the reply unit retransmits the reselection result of the selection unit.