Charging system, charging method, and management server

Abstract

The present invention relates to a charging system, a charging method, and a management server that can efficiently charge each vehicle connected to a charger. [Solution] A charging system for charging electric vehicles, comprising a plurality of chargers that are configured to be connectable to vehicles and that acquire remaining energy information for the connected vehicles, and a management server that is communicatively connected to each charger, and the management server is configured to be able to execute the processes of acquiring remaining energy information for each vehicle from each charger and determining the output of each charger using the remaining energy information for each vehicle.

Description

[Technical Field]

[0001] The present invention relates to a charging system, a charging method, and a management server. [Background technology]

[0002] In recent years, with the spread of electric vehicles, charging stations equipped with multiple charging devices (Patent Document 1, etc.) for charging electric vehicles have been installed in transportation company offices, commercial facilities, etc. At the charging station, power supplied from a cubicle-type high-voltage power receiving facility is distributed to each vehicle connected to the charging device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-129994 Summary of the Invention [Problem to be solved by the invention]

[0004] Charging stations cannot use more power than that supplied by the cubicle-type high-voltage power receiving equipment. Therefore, when multiple vehicles are charged at the same time at a charging station, the amount of power that can be distributed to each vehicle is reduced, resulting in longer charging times.

[0005] The present invention relates to a charging system, a charging method, and a management server that can efficiently charge each vehicle connected to a charger. [Means for solving the problem]

[0006] The charging system of the present invention is a charging system for charging electric vehicles, and is configured to be connectable to vehicles. It comprises a plurality of chargers that acquire remaining energy information of the connected vehicles, and a management server that is communicatively connected to each charger, and the management server is configured to be able to execute a process of acquiring the remaining energy information of each vehicle from each charger, and a process of determining the output of each charger using the remaining energy information of each vehicle.

[0007] In the charging system of the present invention, the multiple chargers may be configured to acquire vehicle identification information of connected vehicles, and the management server may be configured to be able to execute the processes of acquiring the vehicle identification information of each vehicle from each charger, identifying the vehicle information of each vehicle using the vehicle identification information, and determining the output of each charger using the vehicle information and remaining energy information of each vehicle.

[0008] The charging system of the present invention includes a power supply means capable of supplying power to each charger, and the management server is configured to be able to execute a process of acquiring power supply information from the power supply means and a process of determining the output of each charger based on the vehicle information, remaining energy information, and power supply information of each vehicle, and the power supply information includes at least capacity information.

[0009] In the charging system according to the present invention, the management server may include a storage unit that stores the vehicle identification information and the vehicle information in association with each other, and the vehicle information may include at least mileage information.

[0010] In the charging system of the present invention, the management server may be configured to be able to execute a process of determining the charging priority of each vehicle based on the vehicle information and the remaining energy information of each vehicle, and a process of changing the output of each charger according to the charging priority.

[0011] In the charging system according to the present invention, the charger may be a DC charger.

[0012] The charging system of the present invention may include a cubicle-type high-voltage power receiving equipment and a solar power generation device capable of supplying power to each charger, and may be configured so that power from the solar power generation device is supplied to each charger with priority over power from the cubicle-type high-voltage power receiving equipment.

[0013] The charging method of the present invention is a charging method for charging an electric vehicle using a charging system, and includes a step of acquiring remaining energy information from each vehicle connected to a plurality of chargers, and a step of determining the output of each charger using the remaining energy information of each vehicle.

[0014] The management server of the present invention is a management server for managing a plurality of chargers capable of charging electric vehicles, and is configured to be able to execute a process of acquiring, via each charger, remaining energy information of each vehicle connected to each charger, and a process of determining the output of each charger using the remaining energy information of each vehicle. [Effects of the Invention]

[0015] According to the charging system, charging method, and management server of the present invention, each vehicle connected to a charger can be efficiently charged. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram showing a charging system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic diagram illustrating a communication configuration of the charging system according to the present embodiment. [Figure 3] FIG. 2 is a schematic diagram illustrating a management server according to the present embodiment. [Figure 4] FIG. 10 is a diagram illustrating an example of output determination by the management server according to the embodiment. [Figure 5] FIG. 10 is a diagram illustrating another example of output determination by the management server according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention. Furthermore, in the present embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0018] [Overall configuration of charging system] Charging system 1 according to this embodiment is a charging system for charging electric vehicles. As shown in Figures 1 to 3, charging system 1 includes a plurality of chargers 10 capable of charging electric vehicles, a distribution board 20 capable of supplying power to each of chargers 10, a power supply means 30 capable of supplying power to distribution board 20, and a management server 40 connected to each of chargers 10 and power supply means 30 so as to be able to communicate with them via wired or wireless communication.

[0019] In addition to the above configuration, the charging system 1 may also include a control device for controlling each of the chargers 10 and the power supply means 30. In this case, the management server 40 may be configured to be able to communicate directly with each of the chargers 10 and the power supply means 30, or may be configured to be able to communicate with each of the chargers 10 and the power supply means 30 via the control device, or may be both.

[0020] In this embodiment, as an example, the number of chargers 10 is described as five (chargers 10A to 10E), but the number of chargers 10 is not limited to this and may be any number.

[0021] [Charger configuration] Each charger 10 can be installed, for example, at a transportation company's office, a commercial facility, etc. Each charger 10 is a DC charger that receives DC power from a distribution board 20 and supplies the received DC power to a vehicle 2 (see FIGS. 4 and 5). Each charger 10 is configured to be connectable to a vehicle 2 via a charging cable 100 (see FIGS. 4 and 5) and a charging connector (not shown), and is configured to supply DC power to the connected vehicle 2.

[0022] Each charger 10 is also configured to acquire vehicle identification information and remaining energy information of the connected vehicle 2. The vehicle identification information and remaining energy information may be acquired by wired communication (communication via the charging cable 100) or wireless communication. The vehicle identification information and remaining energy information of the vehicle 2 acquired by each charger 10 is transmitted to the management server 40. Each charger 10 may be configured to acquire all or part of the vehicle information (described below) of the connected vehicle 2 from the vehicle 2, and transmit the acquired vehicle information to the management server 40.

[0023] [Distribution board configuration] The distribution board 20 is connected to each charger 10 and the power supply means 30 via a cable 200, and is configured to supply power supplied from the power supply means 30 to each charger 10. Specifically, the distribution board 20 is configured to supply DC power to the charger 10 to which the vehicle 2 is connected, and is configured to supply DC power necessary for the charger 10 to output an output determined by an output determination unit 44 of the management server 40, which will be described later.

[0024] [Power supply means] The power supply means 30 includes a cubicle-type high-voltage power receiving equipment 31, a solar power generation device 32, and a power storage device 33. The cubicle-type high-voltage power receiving equipment 31 is configured to supply AC power supplied from the power grid 3 to the distribution board 20 via an AC / DC inverter 34. The AC / DC inverter 34 is configured to transform the AC power supplied from the cubicle-type high-voltage power receiving equipment 31 and convert it into DC power. The cubicle-type high-voltage power receiving equipment 31 is also provided with a thermometer 37 that measures the temperature. The thermometer 37 may be provided in the solar power generation device 32, or may be provided independently of the cubicle-type high-voltage power receiving equipment 31 and the solar power generation device 32.

[0025] The solar power generation device 32 is configured to generate power using sunlight. The solar power generation device 32 is configured to supply the generated DC power to the distribution board 20 via a DC / DC converter 35. The DC / DC converter 35 is configured to transform the DC power supplied from the solar power generation device 32. The solar power generation device 32 is also provided with an actinometer 38 that measures the solar radiation intensity and / or the amount of solar radiation, and a thermometer 39 that measures the temperature of the solar panel. The power storage device 33 is configured to store surplus power (DC power) from the solar power generation device 32 and to supply the stored DC power to the distribution board 20 via the DC / DC converter 36 as needed. The DC / DC converter 36 is configured to transform the DC power supplied from the power storage device 33. Only one solar power generation device 32 and one power storage device 33 may be provided, or a plurality of solar power generation devices 32 and one power storage device 33 may be provided.

[0026] In the charging system 1 according to this embodiment, power from the solar power generation device 32 and the power storage device 33 is supplied to each charger 10 with priority over power from the cubicle-type high-voltage power receiving equipment 31. That is, each charger 10 is first supplied with power from the solar power generation device 32 and the power storage device 33, and any shortfall is made up by power supplied from the cubicle-type high-voltage power receiving equipment 31. In this embodiment, the power supply means 30 is switched by the management server 40, but if the charging system 1 is equipped with the above-mentioned control device, it may be switched by the control device.

[0027] The charging system 1 may be configured so that power from the cubicle-type high-voltage power receiving equipment 31 is supplied to each charger 10 with priority over power from the solar power generation equipment 32 and the power storage equipment 33. In this case, it is preferable that the charging system 1 determines whether to give priority to power from the cubicle-type high-voltage power receiving equipment 31 or to power from the solar power generation equipment 32 and the power storage equipment 33, based on the price of the power supplied by the cubicle-type high-voltage power receiving equipment 31.

[0028] [Administration Server Configuration] As shown in Figure 3, the management server 40 has a memory unit 41 that stores the vehicle identification information and vehicle information of each vehicle 2 in association with each other, an acquisition unit 42 that can execute a process to acquire the vehicle identification information and remaining energy information of each vehicle 2 from each charger 10, an identification unit 43 that can execute a process to identify the vehicle information of each vehicle 2 using the vehicle identification information, and an output determination unit 44 that can execute a process to determine the output of each charger 10 using the vehicle information and remaining energy information of each vehicle 2.

[0029] The storage unit 41 is configured to store vehicle identification information and vehicle information associated with each vehicle 2. The vehicle identification information is stored in the storage unit 41 upon registration by the user of the vehicle 2. The vehicle information may be stored in the storage unit 41 upon registration by the user of the vehicle 2, or may be stored in the storage unit 41 upon receiving information from the vehicle 2, or may be stored in the storage unit 41 upon receiving information from the charger 10, or may be stored in the storage unit 41 by any other known method. The user may perform registration via an input unit (not shown) included in the management server 40, or via a communication device (not shown) (such as a personal computer, smartphone, or tablet terminal) capable of wireless communication with the management server 40. Furthermore, if the charging system 1 is equipped with the above-described control device, the user may perform registration via an input unit included in the control device.

[0030] The vehicle information includes mileage information. The mileage information is, for example, information about the planned mileage that the vehicle 2 is scheduled to travel after charging is completed. Note that, in addition to or instead of the mileage information, the vehicle information may include one or more pieces of information selected from actual mileage information, travel route information, travel time information, actual travel time information, destination information, coordinate information (latitude and longitude) of the destination, parking time information, power consumption rate information, vehicle model information, tire pressure information, regenerative braking history information, electrical equipment usage history information, production date information of the vehicle 2, charging error history information, battery information, weather information along the travel route, travel date information, travel time information, and external facility information along the travel route.

[0031] Of the above vehicle information, the mileage information, actual mileage information, driving time information, and actual driving time information contribute most to determining the charging priority, so it is preferable that the vehicle information includes at least one of the following information: mileage information, actual mileage information, driving time information, and actual driving time information.

[0032] If the charger 10 is installed at the office of a transport company that transports cargo, i.e., if the vehicle 2 is a transport vehicle, the vehicle information may include one or more pieces of information selected from the location information of the office on the driving route, cargo volume information, cargo type information (refrigerated goods, frozen goods, etc.), departure time information, and return time information.

[0033] The storage unit 41 is configured to store the power supply information acquired from the power supply means 30. The acquisition unit 42 is configured to be able to acquire the power supply information.

[0034] The power supply information includes capacity information of the cubicle-type high-voltage power receiving equipment 31, capacity information (power generation capacity information) of the photovoltaic power generation device 32, and capacity information (power storage capacity information) of the power storage device 33. In addition to or instead of the capacity information, the power supply information may include one or more pieces of information selected from the following: equipment information of the cubicle-type high-voltage power receiving equipment 31, device information of the photovoltaic power generation device 32, device information of the power storage device 33, information (conversion efficiency, etc.) of the AC / DC inverter 34, information (conversion efficiency, etc.) of the DC / DC converter 35, information (conversion efficiency, etc.) of the DC / DC converter 36, information (past and present temperatures, etc.) of the thermometer 37, information (past and present solar radiation intensity, solar radiation amount, etc.) of the pyranometer 38, and information (past and present temperatures, etc.) of the thermometer 39. The acquiring unit 42 may acquire weather information of the location where the photovoltaic power generation device 32 is installed, along with the power supply information. The weather information includes past and present weather information and weather forecast information. Weather information may be obtained from information released by the Japan Meteorological Agency or the like.

[0035] The identification unit 43 is configured to identify the vehicle information of each vehicle 2 based on the vehicle identification information of each vehicle 2 acquired by the acquisition unit 42 and the vehicle identification information and vehicle information stored in association with the memory unit 41.

[0036] The output determination unit 44 is configured to be able to execute a process of determining the output of each charger 10 based on the vehicle information, remaining energy information, and power supply information of each vehicle 2. Specifically, the output determination unit 44 is configured to be able to execute a process of determining the charging priority of each vehicle 2 based on the vehicle information, remaining energy information, and power supply information of each vehicle 2, and a process of changing the output of each charger 10 according to the charging priority. Specifically, first, the output determination unit 44 comprehensively evaluates the vehicle information of each vehicle 2 identified by the identification unit 43 and the remaining energy information and power supply information of each vehicle 2 acquired by the acquisition unit 42, and determines the charging priority of each vehicle 2 connected to the charger 10. Next, the output determination unit 44 determines the output of each charger 10 to which the vehicle 2 is connected so as to be an output according to the determined charging priority.

[0037] The output determination unit 44 may (1) determine the charging priority of each vehicle 2 connected to the charger 10 in order of highest (or lowest) charging priority, or (2) determine the charging priority by classifying each vehicle 2 connected to the charger 10 into multiple categories (for example, a category with high charging priority, a category with medium charging priority, and a category with low charging priority).

[0038] Furthermore, when the output determination unit 44 determines the charging priority using the above method (1), it determines the output, for example, between 0 kW and 30 kW, for each charger 10 to which the vehicle 2 is connected. On the other hand, when the output determination unit 44 determines the charging priority using the above method (2), it determines the output of the charger 10 to be an output that is predetermined for each category. For example, the output can be determined as 30 kW if the charger belongs to a category with high charging priority, 9 kW if the charger belongs to a category with medium charging priority, and 3 kW if the charger belongs to a category with low charging priority.

[0039] When determining the output for each charger 10 to which a vehicle 2 is connected (when the charging priority is determined by the method (1) above), the output determination unit 44 determines the output of each charger 10 to which a vehicle 2 is connected using at least one of the number of vehicles 2 connected to the charger 10 and the maximum power that the power supply means 30 can supply. When the number of vehicles 2 is small, the output of each charger 10 can be made larger than when the number of vehicles 2 is large. Similarly, when the maximum power that the power supply means 30 can supply is large, the output of each charger 10 can be made larger than when the maximum power that the power supply means 30 can supply is small. The maximum power that the power supply means 30 can supply is the sum of the maximum power that the cubicle-type high-voltage power receiving equipment 31, the solar power generation device 32, and the power storage device 33 can supply. The number of vehicles 2 connected to the charger 10 can be detected by the charger 10 and transmitted to the management server 40. The maximum power that the power supply means 30 can supply is detected by the management server 40. If the charging system 1 includes the control device described above, the control device may detect the maximum power and transmit it to the management server 40.

[0040] Furthermore, the output determination unit 44 determines the output of each charger 10 to which the vehicle 2 is connected, within a range in which the total output of each charger 10 to which the vehicle 2 is connected does not exceed the allowable output. The allowable output may be the power set by the administrator who manages the management server 40, or may be the contracted power of the cubicle-type high-voltage power receiving equipment 31.

[0041] [Charging method] Next, a charging method for charging an electric vehicle using the charging system 1 will be described with reference to Figures 4 and 5. The following description will be given taking as an example a case where the vehicle information includes mileage information and the power supply information includes capacity information. The following description will also be given taking as an example a case where vehicles 2A to 2E are connected to chargers 10A to 10E. Furthermore, the following description will be given taking as an example a case where the charging priority of each vehicle 2 connected to the charger 10 is determined in descending order of the charging priority, and the output is determined for each charger 10 to which a vehicle 2 is connected.

[0042] 4 and 5, vehicles 2A to 2E are connected to chargers 10A to 10E, and thus chargers 10A to 10E acquire vehicle identification information and remaining energy information from vehicles 2A to 2E. Furthermore, acquisition unit 42 of management server 40 acquires vehicle identification information and remaining energy information of vehicles 2A to 2E from chargers 10A to 10E. Management server 40 further acquires power supply information from power supply means 30.

[0043] When the acquisition unit 42 of the management server 40 acquires the vehicle identification information of the vehicles 2A to 2E, the identification unit 43 of the management server 40 identifies the vehicle information of the vehicles 2A to 2E. When the identification unit 43 of the management server 40 identifies the vehicle information of the vehicles 2A to 2E, the output determination unit 44 of the management server 40 determines the output of the chargers 10A to 10E based on the vehicle information, remaining energy information, and power supply information of the vehicles 2A to 2E.

[0044] Specifically, first, the output determination unit 44 comprehensively evaluates the vehicle information of the vehicles 2A to 2E, the remaining energy information, and the power supply information of the power supply means 30, and determines the charging priority of the vehicles 2A to 2E. Next, the output determination unit 44 determines the output of the chargers 10A to 10E so that the output corresponds to the determined charging priority. For example, if it is evaluated that vehicle 2E will have a higher charging priority than vehicle 2B because it has a long driving distance and little remaining energy, vehicle 2B will have a higher charging priority than vehicle 2A because it has a short driving distance but little remaining energy, vehicle 2A will have a higher charging priority than vehicles 2C and 2D because it has a long driving distance but a lot of remaining energy, and vehicles 2C and 2D will have the lowest charging priority because they have a short driving distance and a lot of remaining energy, then, as shown in Figure 4, the output of charger 10E will be made the highest (30kW in Figure 4), the output of charger 10B will be made the next highest (20kW in Figure 4), the output of charger 10A will be made the next highest (10kW in Figure 4), and the output of charger 10C and charger 10D will be made the lowest (6kW in Figure 4). Furthermore, for example, if it is evaluated that vehicles 2B and 2C have a higher charging priority than vehicle 2A because they have a long driving distance and little remaining energy, that vehicle 2A has a higher charging priority than vehicles 2D and 2E because it has a short driving distance but little remaining energy, and that vehicles 2D and 2E have the lowest charging priority because they have a short driving distance and a large remaining energy, then, as shown in Figure 5, the output of charger 10B and charger 10C is made the highest (30 kW in Figure 5), the output of charger 10A is made the next highest (20 kW in Figure 5), and the output of charger 10D and charger 10E is made the lowest (6 kW in Figure 5).

[0045] The outputs determined by the output determination unit 44 are transmitted to the chargers 10A to 10E, and DC power corresponding to the outputs is supplied to the chargers 10A to 10E from the distribution board 20. Furthermore, DC power is supplied from the chargers 10A to 10E to the vehicles 2A to 2E, and the vehicles 2A to 2E are charged.

[0046] In this embodiment, a configuration has been described in which the output determination unit 44 determines the output of each charger 10 based on vehicle information, remaining energy information, and power supply information, but this is not limited to this, and the output of each charger 10 may be determined based on vehicle information and remaining energy information, or the output of each charger 10 may be determined based only on remaining energy information.

[0047] [Advantages of the charging system according to this embodiment] The charging system 1 of this embodiment is a charging system for charging electric vehicles, and is configured to be connectable to a vehicle 2. It comprises a plurality of chargers 10 that acquire remaining energy information of the connected vehicle 2, and a management server 40 that is communicatively connected to each charger 10, and the management server 40 is configured to be able to execute the processes of acquiring remaining energy information of each vehicle from each charger 10 and determining the output of each charger 10 using the remaining energy information of each vehicle 2.

[0048] According to the charging system 1 having such a configuration, the output of each charger 10 can be set to an output corresponding to the remaining power amount of each vehicle 2, so that each vehicle 2 connected to the charger 10 can be charged efficiently.

[0049] Furthermore, in conventional charging stations, in order to vary the output (charging speed) for each charger, multiple chargers with different outputs must be installed, and the user must select the charger with the desired output and connect the vehicle to it. Therefore, conventional charging stations have the problem of imposing a burden on the user to select a charger, limiting parking to locations where the desired charger is installed, and preventing charging if the desired charger is already in use. In contrast, the charging system 1 according to this embodiment, which has the above-described configuration, has the advantage of allowing charging to be performed at any location (free address) without the user having to select the charger 10 to connect to. Furthermore, the charging system 1 according to this embodiment has the advantage of reducing equipment costs, since it does not require the installation of multiple chargers with different outputs.

[0050] In the charging system 1 according to this embodiment, the multiple chargers 10 are configured to acquire vehicle identification information of the connected vehicles 2, and the management server 40 is configured to be able to execute the following processes: acquire the vehicle identification information of each vehicle 2 from each charger 10; identify the vehicle information of each vehicle 2 using the vehicle identification information; and determine the output of each charger 10 using the vehicle information and remaining energy information of each vehicle 2. With the charging system 1 configured in this way, the output of the charger 10 to which the vehicle 2 is connected is determined based on the vehicle information and remaining energy information of the vehicle 2 connected to the charger 10, so that each vehicle 2 connected to the charger 10 can be charged more efficiently.

[0051] The charging system 1 according to this embodiment includes a power supply means 30 capable of supplying power to each charger 10, and the management server 40 is configured to be able to execute processes of acquiring power supply information from the power supply means 30 and determining the output of each charger 10 based on vehicle information, remaining energy information, and power supply information of each vehicle 2, the power supply information including at least capacity information. With the charging system 1 configured in this way, the output of the charger 10 can be determined taking into account the capacity information of the power supply means 30, and therefore each vehicle 2 connected to the charger 10 can be efficiently charged.

[0052] In the charging system 1 according to this embodiment, the management server 40 includes a storage unit 41 that stores vehicle identification information and vehicle information in association with each other, and the vehicle information includes at least mileage information. With the charging system 1 configured as described above, the output of the charger 10 to which the vehicle 2 is connected is determined using mileage information and remaining energy information of the vehicle 2 connected to the charger 10, so that each vehicle 2 connected to the charger 10 can be efficiently charged.

[0053] In the charging system 1 according to this embodiment, the management server 40 is configured to be able to execute a process of determining the charging priority of each vehicle 2 based on the vehicle information and remaining energy information of each vehicle 2, and a process of changing the output of each charger 10 according to the charging priority. With the charging system 1 having such a configuration, the output of the charger 10 to which the vehicle 2 is connected can be set according to the charging priority, so that each vehicle 2 connected to the charger 10 can be charged efficiently. Furthermore, because the output of each charger 10 can be changed, deterioration of the battery of the vehicle 2 can be controlled.

[0054] In the charging system 1 according to this embodiment, the power supply means 30 includes a cubicle-type high-voltage power receiving facility 31 and a solar power generation system 32 that can supply power to each charger 10, and is configured so that power from the solar power generation system 32 is supplied to each charger 10 with priority over power from the cubicle-type high-voltage power receiving facility 31. The charging system 1 configured in this way can reduce the amount of power used and the peak of power supplied from the power grid 3, thereby reducing power costs.

[0055] In the charging system 1 according to this embodiment, the charger 10 is a DC charger. Unlike so-called normal charging, the charging system 1 having such a configuration can suppress power loss during DC conversion.

[0056] [Variations] The charging system, charging method, and management server according to the present invention are not limited to the above-described embodiments, and various modifications can be made within the scope that does not deviate from the technical concept of the present invention.

[0057] In the above-described embodiment, the vehicle information, remaining energy information, and power supply information are used to determine the output of the charger 10, but in addition to this, power usage information, which is information about the power used at the installation location of the charger 10 (such as the above-described business office or commercial facility), may also be used. Note that the charging system 1 may be configured to be able to switch between a process of supplying power to the charger 10 with priority over the installation location of the charger 10 and a process of supplying power to the installation location of the charger 10 with priority over the charger 10, based on the vehicle information, remaining energy information, power supply information, and power usage information.

[0058] In the above-described embodiment, a configuration has been described in which the output determination unit 44 determines the output of each charger 10 according to the charging priority of each vehicle 2, but this is not limited to this. For example, the output determination unit 44 may be configured to be able to execute a process of uniformly determining the output of each charger 10, and the administrator managing the management server 40 may be able to arbitrarily select between the process of determining the output of each charger 10 according to the charging priority of each vehicle 2 and the process of uniformly determining the output of each charger 10.

[0059] In the above embodiment, the charger 10 is a DC charger, but the present invention is not limited to this and may be an AC charger.

[0060] In the above-described embodiment, the power supply means 30 is described as including a cubicle-type high-voltage power receiving equipment 31, a solar power generation device 32, and a power storage device 33, but is not limited to this and may be configured to include only the cubicle-type high-voltage power receiving equipment 31.

[0061] In the above-described embodiment, a configuration has been described in which the management server 40 acquires power supply information from the power supply means 30, but this is not limiting and a configuration in which power supply information is not acquired is also possible. In this case, the management server 40 determines the output of each charger 10 based on the remaining energy information, or based on the vehicle information and the remaining energy information.

[0062] It is clear from the claims that the above-mentioned modifications are included within the scope of the present invention. [Explanation of symbols]

[0063] 1: Charging system 2: Vehicle 3: Power system 10: Charger 20: Distribution board 30:Power supply means 31: Cubicle-type high-voltage power receiving equipment 32: Solar power generation equipment 33: Power storage device 34: AC / DC inverter 35: DC / DC converter 36: DC / DC converter 37: Thermometer 38:Pyranometer 39: Thermometer 40: Management Server 41: Storage section 42: Acquisition part 43: Specific part 44: Output determination unit 100: Charging cable 200: Cable

Claims

1. A charging system for charging an electric vehicle, comprising: The system includes a plurality of chargers that are connectable to vehicles and acquire vehicle identification information and remaining power information of the connected vehicles, a power supply means that can supply power to each charger, and a management server that is communicably connected to each charger, the charger is a DC charger, the power supply means includes a solar power generation device capable of supplying DC power to each charger; the solar power generation device is provided with a pyranometer that measures at least one of solar radiation intensity and solar radiation amount, and a thermometer that measures a temperature of a solar panel of the solar power generation device, the management server is configured to be able to execute a process of acquiring the vehicle identification information and the remaining energy information of each vehicle from each charger, a process of specifying vehicle information of each vehicle using the vehicle identification information, a process of acquiring power supply information from the power supply means, and a process of determining an output of each charger based on the vehicle information, the remaining energy information, and the power supply information of each vehicle, The power supply information includes one or more pieces of information selected from the device information of the solar power generation device, the measurement results of the pyranometer, and the measurement results of the thermometer. Charging system.

2. The power supply means includes a power storage device that stores surplus power from the solar power generation device and is capable of supplying the stored DC power to each charger, The power supply information includes device information of the power storage device. The charging system of claim 1 .

3. The power supply information includes at least one of power generation capacity information of the solar power generation device and storage capacity information of the storage device. The charging system according to claim 2 .

4. the management server includes a storage unit that stores the vehicle identification information and the vehicle information in association with each other; The vehicle information includes at least mileage information. The charging system according to any one of claims 1 to 3.

5. The management server is configured to be able to execute a process of determining a charging priority of each vehicle based on the vehicle information and the remaining energy information of each vehicle, and a process of changing the output of each charger according to the charging priority. The charging system according to any one of claims 1 to 3.

6. the power supply means includes a cubicle-type high-voltage power receiving facility capable of supplying power to each charger, the cubicle-type high-voltage power receiving equipment is configured to supply power to each charger via an AC / DC inverter; The power supply information includes equipment information of a cubicle-type high-voltage power receiving equipment, The power from the solar power generation device is supplied to each charger with priority over the power from the cubicle-type high-voltage power receiving equipment. The charging system according to any one of claims 1 to 3.

7. The cubicle-type high-voltage power receiving equipment is provided with a thermometer for measuring the temperature, The power supply information includes the measurement result of the thermometer. The charging system according to claim 6 .

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