WO2020162553A1

WO2020162553A1 - Charging equipment, and method for controlling charging equipment

Info

Publication number: WO2020162553A1
Application number: PCT/JP2020/004624
Authority: WO
Inventors: 泰城岩田
Original assignee: 株式会社豊田自動織機
Priority date: 2019-02-08
Filing date: 2020-02-06
Publication date: 2020-08-13
Also published as: JP7052753B2; JP2020129917A

Abstract

The present invention provides charging equipment that appropriately sets charging power distributed to each of a plurality of charging stations. Charging control devices (31) of a plurality of charging stations (21) can acquire each other's information by constructing networks (32, 33). In each charging control device (31) of the plurality of charging stations (21), a charging information acquisition unit (37) acquires from a charging device (22) charging information which is information relating to charging of a secondary battery (51) (S3). From priority information, charging information acquired by the charging information acquisition unit, and charging information acquired from another charging station via a network (S4), a calculating unit (38) calculates the charging power of the rechargeable power that is allocated to the charging station of the calculation unit itself (S5).

Description

Charging facility and method for controlling charging facility

The present disclosure relates to a charging facility and a method for controlling the charging facility.

As a charging system that distributes the power supplied from the system power supply to a plurality of charging stations, for example, it is described in Patent Document 1. The charging system described in the above document includes a plurality of charging stations that charge a secondary battery that is a power source of an electric vehicle, and a host controller that sets the power distributed to the plurality of charging stations. The host controller sets the power to be distributed based on the power demand trend of the charging station. The charging station charges the secondary battery of the electric vehicle based on the distributed electric power.

JP, 2005-50853, A

In the above document, the electric power distributed to each charging station depends on the electric power demand. Therefore, it cannot be said that appropriate power is set according to the state of the secondary battery.
An object of the present disclosure is to provide a charging facility that can appropriately set charging power distributed to each of a plurality of charging stations.

A charging facility according to an aspect of the present disclosure is a charging facility including a plurality of charging stations, and each of the plurality of charging stations charges a secondary battery of an electric vehicle with electric power supplied from a system power supply. A plurality of charging devices configured to perform, and a charging control device that is provided so as to be able to communicate with the charging device and the host control device, wherein the charging control devices of the plurality of charging stations are a network. It is possible to acquire information of each other by constructing, each of the charging control device of the plurality of charging stations, the charging information is information about the charging of the secondary battery, so as to obtain from the charging device. A charging information acquisition unit configured, priority information, which is information indicating which of the charging devices is preferentially distributed with power, a priority information acquisition unit configured to acquire from the higher-order control device, The chargeable power that is power that can be used in the charging facility is acquired by the chargeable power acquisition unit configured to acquire from the higher-level control device, the priority information, and the charging information acquisition unit. A calculation unit configured to calculate, from the charging information and the charging information acquired from another charging station via the network, charging power allocated to the charging station of the rechargeable power. , Is provided.

The charging control device of each charging station can acquire the charging information of other charging stations via the network. Each charging control device calculates charging power based on priority information, charging information of its own charging station, and charging information of another charging station. In addition to its own charging station, charging power is calculated by taking into account charging information of other charging stations. Therefore, it is possible to set an appropriate charging power according to the charging information. Further, since the charging power is calculated based on the priority information, the power can be preferentially distributed to the specific charging device.

Regarding the charging facility, the calculation unit is configured to calculate the charging power at each preset time, and the charging device calculates the charging power and then calculates the charging power. If the connection of the electric vehicle to the charging device is detected before the operation, the secondary battery may be charged after the calculation of the charging power is performed next.

For example, according to the above configuration, the control performed by the charging control device can be simplified as compared with the case where the charging power is calculated when the connection of the electric vehicle is detected.
Further, a method for controlling a charging facility including the above various processes may be provided, and a program for causing a processor to execute the various processes and a non-transitory computer-readable storage medium storing the program may be provided. ..

According to the present disclosure, charging power distributed to each of a plurality of charging stations can be appropriately set.

The schematic block diagram of a charging system. The block diagram which shows typically the charging equipment in the charging system of a figure. In the charging system of the figure, the interaction diagram of a host controller, a charge controller, and a charger.

Hereinafter, an embodiment of the charging facility will be described.
As shown in FIG. 1, the charging system 10 includes a charging facility 20 and a host controller 40. The charging facility 20 is provided in a customer who is supplied with power from a power supplier such as a power company. Examples of consumers include factories, public facilities, and commercial facilities. The customer is provided with a load 11 other than the charging facility 20. The electric power supplied from the electric power supplier through the system power supply 12 is shared by the charging facility 20 and the load 11 other than the charging facility 20. The charging system 10 is a system that performs control so that the electric power used by the charging facility 20 and the load 11 does not exceed a set value.

The charging facility 20 includes a plurality of charging stations 21. In the present embodiment, three charging stations 21 will be described as an example, but the number of charging stations 21 may be changed as appropriate.

As shown in FIGS. 1 and 2, the charging station 21 is a facility for charging the secondary battery 51 mounted on the electric vehicle 50. The electric vehicle 50 includes a secondary battery 51, a battery control unit 52, and a communication unit 53. The electric vehicle 50 is a vehicle that runs using a rechargeable secondary battery 51 as a power source. As the secondary battery 51, any type of secondary battery such as a lithium ion secondary battery or a nickel hydrogen secondary battery may be used. The electric vehicle 50 may be of any type such as a passenger vehicle such as an electric vehicle or a plug-in hybrid vehicle, an industrial vehicle such as a forklift, or the like. The battery control unit 52 estimates SOC: State of Charge, which is the charging rate of the secondary battery 51, and monitors the state of the secondary battery 51 such as the voltage and temperature of the secondary battery 51. The communication unit 53 transmits information about the secondary battery 51, such as the charging rate of the secondary battery 51, to the charging station 21.

Each charging station 21 includes a plurality of charging devices 22 and a charging control device 31. Although the two charging devices 22 are illustrated in the present embodiment, the number of the charging devices 22 may be appropriately changed. The charging station 21 is a unit including a charging control device 31 and a plurality of charging devices 22 connected to the charging control device 31 by wiring 28. The plurality of charging stations 21 may be two or more charging stations 21 provided in two or more geographically separated sections, or two or more charging stations 21 provided in the same geographical area. The charging station 21 of FIG. For convenience of description, the charging stations 21 are described as having the same configuration, but the specifications of the charging device 22 such as the maximum charging power that the charging device 22 can output may be different for each charging station 21.

As shown in FIG. 2, the charging device 22 includes a converter 23 that converts AC power supplied from the system power supply 12 into DC power, a charging plug 24 connected to the electric vehicle 50, and a first communication unit 25. The second communication unit 26 and the control unit 27 are included. The first communication unit 25 is a member for transmitting and receiving information to and from the communication unit 53 of the electric vehicle 50. The second communication unit 26 is a member for transmitting and receiving information to and from the charging control device 31. The control unit 27 controls the charging device 22. The control unit 27 can detect that the charging plug 24 is connected to the electric vehicle 50. When the charging plug 24 is connected to the electric vehicle 50, the conversion unit 23 and the secondary battery 51 are connected to each other, and the first communication unit 25 and the communication unit 53 are connected to each other. Since the first communication unit 25 and the communication unit 53 are connected to each other, the control unit 27 can acquire information about the secondary battery 51, such as the charging rate of the secondary battery 51. The control unit 27 controls the conversion unit 23 according to the charging power instruction value instructed from the charging control device 31 through the second communication unit 26. The secondary battery 51 is charged by the DC power output from the conversion unit 23.

Charging information is transmitted from the second communication unit 26 to the charging control device 31. The charging information is information about charging of the secondary battery 51, specifically, information necessary for charging the secondary battery 51 in the charging facility 20. The charging information includes at least one of information about the charging device 22, information about the secondary battery 51, and information about the electric vehicle 50. For example, the charging information includes connection state information, identification information, specifications of the charging device 22, and information about the secondary battery 51. The connection status information includes whether the charging plug 24 is connected to the electric vehicle 50, whether the charging device 22 is charging the secondary battery 51, whether the charging device 22 has charged the secondary battery 51, and the like. Is information indicating the state of charge of the charging device 22. The identification information is information indicating a unique ID that is individually set for each charging device 22. The specifications of the charging device 22 are information indicating the maximum charging power that the charging device 22 can output and the like.

As shown in FIGS. 1 and 2, the charging control device 31 of each charging station 21 is connected to be able to communicate with each other. More specifically, the charging facility 20 includes a hub 32 and a wiring 33, and the wiring 33 connects the hub 32 and each charging control device 31 to each other. The charge control devices 31 are connected to each other via the hub 32. As a result, a network is constructed by each charging control device 31. In the present embodiment, the charging control devices 31 of the plurality of charging stations 21 are mutually connected by the hub 32, so that a star-type local area network is constructed. The hub 32 is connected to the host controller 40 in a communicable state. Each charging control device 31 can communicate with the host control device 40 via the hub 32. Each charging control device 31 transmits charging information to the host control device 40.

The upper control device 40 is a server. The host controller 40 may be provided in a customer or may be provided in a place different from the customer. The upper control device 40 includes an information management unit 41 and a power management unit 42. The information management unit 41 and the power management unit 42 are functional units that function when the CPU of the host controller 40 performs predetermined processing.

The information management unit 41 stores and analyzes the charging information acquired from the charging control device 31. That is, the information management unit 41 is a database of charging information.
The power management unit 42 calculates chargeable power. The rechargeable power is, of the power supplied from the system power supply 12, power that can be used in the charging facility 20, that is, power that can be used to charge the secondary battery 51. The chargeable power is power that is calculated based on the power used by the load 11 other than the charging facility 20 and the set value. The chargeable power is calculated so that the set value is not exceeded even if the chargeable power is added to the power used by the load 11. That is, it can be said that the rechargeable power is calculated so that the power used by all the consumers does not exceed the set value. As the set value, for example, contract electric power that is electric power determined by a contract with an electric power supplier, or a value lower than the contract electric power can be mentioned.

The power management unit 42 transmits chargeable power and priority information to each charging control device 31. The priority information is information regarding the charging device 22 to which power is preferentially distributed. The priority information may be set for the charging station 21 or may be set for the charging device 22. That is, the priority information may be information that preferentially distributes electric power to the plurality of charging devices 22 forming the charging station 21, or among the plurality of charging devices 22 forming the charging station 21. The information may be such that power is preferentially distributed only to the specific charging device 22.

The priority information may be information designating one or a plurality of charging devices 22 to which power is preferentially distributed among the plurality of charging devices 22, or information designating a priority order among the plurality of charging devices 22. May be For example, if the priority information is information that specifies that one charging station 21 be preferentially distributed with electric power, one charging station 21 specified by the priority information has priority over the remaining two charging stations 21. Power is distributed. When the priority information is information specifying the priority order of the three charging stations 21, the power distribution to the charging station 21 having the highest priority is given the highest priority, and the power supply to the charging station 21 having the second highest priority is performed. Is prioritized second.

By the priority information, the administrator of the charging facility 20 can appropriately set which charging device 22 is to be preferentially charged. Hereinafter, an example of how to set which charging device 22 to preferentially distribute the power by the priority information will be described.

The type of the electric vehicle 50 may be designated for each charging station 21, and the priority information may be set according to the designated type of the electric vehicle 50. For example, when one of the plurality of charging stations 21 is for a plug-in hybrid vehicle and the other two are for an electric vehicle, the charging station 21 for the electric vehicle is preferentially distributed with electric power. May be. While the plug-in hybrid vehicle can run on the engine, the travelable distance of the electric vehicle depends only on the remaining capacity of the secondary battery 51. Therefore, the secondary battery 51 of the electric vehicle is preferentially charged.

A charging mode may be specified for each charging station 21, and priority information may be set according to the specified charging mode. For example, if one of the plurality of charging stations 21 is for normal charging and the other two are for rapid charging, even if power is preferentially distributed to the charging station 21 for rapid charging. Good. Since rapid charging uses a larger amount of power than normal charging, the charging station 21 for rapid charging is preferentially charged.

As described above, the priority information can be set so that the power is preferentially distributed to any charging station 21. In the above example, the case where the priority information is set for each charging station 21 has been described, but the priority information can be set for each charging device 22 in the same manner.

In the charging system 10 configured as described above, power is distributed to the charging devices 22 so that the power used by the charging equipment 20 and the load 11 does not exceed the set value. Of the chargeable power, the charge power assigned to each charging station 21 is calculated by the charge control device 31. The charging control device 31 includes a communication unit 34, a priority information acquisition unit 35, a chargeable power acquisition unit 36, a charging information acquisition unit 37, and a calculation unit 38. The communication unit 34 is a member for transmitting and receiving information to and from the second communication unit 26 of the charging device 22. The priority information acquisition unit 35, the chargeable power acquisition unit 36, the charge information acquisition unit 37, and the calculation unit 38 are functional units that function when the CPU of the charging control device 31 performs predetermined processing. The priority information acquisition unit 35 acquires priority information from the upper control device 40. The chargeable power acquisition unit 36 acquires chargeable power from the host controller 40. The charging information acquisition unit 37 acquires charging information from the charging device 22. The calculator 38 calculates the charging power. Here, specifically, the charging control device 31 includes a CPU and a storage unit including a RAM and a ROM. The storage unit stores various programs for the functional unit to perform a predetermined process. The communication unit 34, the priority information acquisition unit 35, the chargeable power acquisition unit 36, the charging information acquisition unit 37, and the calculation unit 38 are not limited to those that perform software processing for all the processing executed by themselves. These functional units may be provided with dedicated hardware for executing at least a part of various processes, for example, an application-specific integrated circuit: ASIC. These functional units are circuits including (a) one or more processors operating according to a computer program (software), (b) one or more dedicated hardware circuits such as ASIC, or (c) a combination thereof. Can be configured as. The processor includes a CPU and memories such as RAM and ROM. The memory stores program codes or instructions configured to cause the CPU to perform processing. Memory, or non-transitory computer readable storage media, includes anything that can be accessed by a general purpose or special purpose computer.

The control performed by the charging control device 31 will be described in detail below. In the following description, one of the two charging devices 22 of the charging station 21 will be appropriately referred to as a first charging device 22A, and the other will be referred to as a second charging device 22B. An electric vehicle 50 (for example, a first electric vehicle 50A) is connected to the first charging device 22A, and an electric vehicle 50 (first electric vehicle 50A) is charged to the second charging device 22B by the first charging device 22A. After starting, another electric vehicle 50 (second electric vehicle 50B) is connected.

As shown in FIG. 3, in step S<b>1, the host controller 40 transmits the chargeable power and the priority information to the charge controller 31. Although illustration is omitted, the higher-level control device 40 transmits the chargeable power and the priority information at every predetermined cycle. Similarly, in step S2, the first charging device 22A transmits charging information to the charging control device 31. Although illustration is omitted, the first charging device 22A transmits charging information to the charging control device 31 at every predetermined cycle. At the time of step S2, since electric vehicle 50 is not connected to second charging device 22B, charging information is not transmitted from second charging device 22B. Alternatively, as the charging information, the information indicating that the electric vehicle 50 is not connected to the second charging device 22B is transmitted from the second charging device 22B.

In step S3, the charging control device 31 acquires chargeable power, priority information, and charging information of its own charging station 21. The charging control device 31 functions as the priority information acquisition unit 35, the chargeable power acquisition unit 36, and the charging information acquisition unit 37 by performing the process of step S3.

Next, in step S4, the charging control device 31 acquires charging information from another charging station 21 via the network. As a result, the charging control device 31 collects the charging information of the charging device 22 in its own charging station 21 (the charging station 21 to which the charging control device 31 itself belongs) and the charging information of the charging device 22 in another charging station 21. Will get it.

Next, in step S5, the charging control device 31 calculates charging power. The charging control device 31 functions as the calculation unit 38 by performing the process of step S5. First, the charging control device 31 calculates the required power in its own charging station 21. The required power can be calculated from the charging information. The required power can be calculated at least if the connection state of the electric vehicle 50 to the charging station 21 can be detected. For example, the required power when one electric vehicle 50 is connected to the charging station 21 may be set in advance, and the required power may be calculated according to the number of charging devices 22 to which the electric vehicle 50 is connected. Therefore, the charging information only needs to include at least the connection state information. When the charging information includes the charging rate of the secondary battery 51, the lower the charging rate of the secondary battery 51, the larger the required power may be. When the required charging rate is instructed to the charging control device 31, the required power may be increased as the difference between the required charging rate and the charging rate of the secondary battery 51 increases. The required charging rate is a charging rate required to drive the electric vehicle 50, and the required charging rate is instructed by the host controller 40 or an input unit provided in the charging device 22. For example, if the electric vehicle 50 is a forklift, the higher-level control device 40 may instruct the charging control device 31 of the required charging rate calculated from the cargo handling schedule or the like. If the electric vehicle 50 is a passenger vehicle, the required charging rate may be calculated from the planned traveling distance by the passenger inputting the planned traveling distance using the input unit.

The charging control device 31 calculates the required power of other charging stations 21 by the same process as the process of calculating the required power of the charging station 21 to which it belongs. The charging control device 31 adds the required power of its own charging station 21 and the required power of the other charging stations 21, and obtains the required power of the entire charging facility 20. The charging control device 31 obtains the ratio of the required power of its own charging station 21 to the required power of the entire charging facility 20. The charge control device 31 calculates the basic charge power based on the calculated ratio and the chargeable power. For example, the basic charging power is calculated by multiplying the calculated ratio by the chargeable power. The basic charging power may be a value calculated in consideration of a margin and a coefficient. The basic charging power is the power distributed to each charging station 21 when priority information is not added.

Next, the charging control device 31 calculates the charging power, which is the power distributed to the charging station 21, from the basic charging power based on the priority information. The charging control device 31 may calculate the charging power by multiplying the basic charging power by a coefficient. For example, when the priority information specifies that the power is preferentially distributed to one charging station 21, the charging control device 31 sets the coefficient of the charging station 21 to 1.2, and the other two. The coefficient of one charging station 21 may be 0.9. When the priority order of the charging stations 21 is determined by the priority information, the coefficients may be set to 1.1, 1.0 and 0.9 in order from the charging station 21 having the highest priority order. Instead of multiplying by the coefficient, the charging power may be calculated by adding or subtracting a fixed value according to the priority information to the basic charging power. That is, the charging control device 31 only needs to preferentially distribute the power to the charging station 21 having a high priority based on the priority information, and the method of calculating the charging power is arbitrary. When priority information is set for the charging device 22, a coefficient or a fixed value is set depending on the number of charging devices 22 to which power is preferentially distributed or the number of charging devices 22 with high priority. Good.

Next, in step S6, the charging control device 31 calculates a charging power instruction value. The charging power instruction value is calculated based on the charging power and the charging information. Further, when some of the plurality of charging devices 22 of the charging station 21 are designated as the charging devices 22 in which the power is preferentially distributed, the charging power instruction value is calculated in consideration of the priority information. .. In this case, as in the case of the above-described preferential power distribution to the charging station 21, the charging power instruction value may be multiplied by a coefficient or the charging power instruction value may be adjusted by a fixed value according to the priority information.

Next, in step S7, the charging control device 31 transmits the charging power instruction value to the first charging device 22A. In step S8, the first charging device 22A charges the secondary battery 51 according to the charging power instruction value.

The charging control device 31 calculates charging power for each preset time T1. The set time T1 is set based on the followability of the charging device 22 and the secondary battery 51 with respect to the charging power instruction value. It takes time for the power actually supplied to the secondary battery 51 to follow the charging power instruction value after the charging control device 31 outputs the charging power instruction value to the charging device 22. The set time T1 is set to be longer than the time required for the electric power actually supplied to the secondary battery 51 to follow the charging power instruction value.

After the calculation of the charging power in step S5 and before the step S51 in which the charging power is calculated next, the second charging device 22B detects the connection of the electric vehicle 50 to the second charging device 22B in step S9. Suppose In this case, in step S10, the charging information is transmitted from the second charging device 22B to the charging control device 31. In step S11, the charging control device 31 recognizes that the electric vehicle 50 is connected to the second charging device 22B by acquiring the charging information from the second charging device 22B.

When the electric vehicle 50 is connected to the second charging device 22B, the charging control device 31 does not transmit the charging power instruction value to the charging device 22 until the charging power is calculated in step S51. That is, the charging control device 31 does not calculate the charging power triggered by the connection of the electric vehicle 50 to the charging device 22, but calculates the charging power only when the set time T1 elapses. The second charging device 22B stands by without charging from the detection of the connection with the electric vehicle 50 to the next calculation of the charging power by the charging control device 31 (S51).

When the set time T1 has elapsed from the calculation of the charging power in step S5, the charging control device 31 calculates the charging power in step S51. Then, in step S61, the charging control device 31 calculates the charging power instruction value for the two charging devices 22. In step S71, the charging control device 31 transmits the charging power instruction value to the two charging devices 22. As a result, in steps S81 and S82, the secondary battery 51 of each electric vehicle 50 connected to the two charging devices 22 is charged.

The operation of this embodiment will be described.
The charging control device 31 of each charging station 21 can acquire the charging information of another charging station 21 via the network. Thereby, each charging control device 31 can calculate the charging power based on the priority information, the charging information of the charging station 21 of itself, and the charging information of the other charging stations 21. Therefore, the charging control device 31 calculates the charging power in consideration of the charging information of the other charging stations 21 in addition to the charging station 21 of itself, so that the charging power to be distributed to each charging station 21 is appropriately calculated. Can be set. If the charging power is set according to the tendency of the power demand of the charging station 21, the charging power is set without considering the charging information. Therefore, the charging power is set without considering the state of the secondary battery 51. In addition, a large amount of power is not always distributed to the charging station 21 that requires a large amount of power. On the other hand, when the charging power is calculated according to the charging information of the charging station 21 as in the present embodiment, the number of electric vehicles 50 connected to the charging station 21, the charging rate of the secondary battery 51, and the like. The charging power is calculated in consideration of the above. By calculating the charging power in consideration of the charging information of the other charging stations 21 as well, it becomes possible to increase the distribution of the power to the charging stations 21 that require much power. By calculating the charging power based on the priority information, the power can be preferentially distributed to the specific charging device 22. Since the administrator of the charging facility 20 can set the priority information as appropriate, the charging power can be finely set.

On the other hand, it is conceivable that the upper control device 40 calculates the charging power and instructs each charging control device 31 on the charging power. However, when the charging information is transmitted to the higher-level control device 40 and the higher-level control device 40 calculates the charging power, the higher-level control device 40 collectively calculates the charging power of each charging station 21. The load of 40 is large. Also, it may take time for the charging power calculated based on the charging information to be reflected due to the communication delay between the host controller 40 and the charging controller 31. On the other hand, when the charging control device 31 calculates the charging power as in the present embodiment, the charging control device 31 may calculate the charging power of its own charging station 21. In this case, since it is not necessary to collectively calculate the charging power of the plurality of charging stations 21 in some devices, it is possible to prevent the load from being concentrated in some devices. Further, since each charging control device 31 calculates the charging power, it is possible to suppress the occurrence of communication delay.

As shown by the chain double-dashed line in FIG. 2, when adding the charging device 22 to the charging station 21, it is necessary to connect the charging device 22 and the charging control device 31 to each other by the wiring 28. If the charging control device 31 is shared by the charging stations 21 and only one charging control device 31 is provided in the charging facility 20, the wiring 28 tends to be long. In addition, the number of charging devices 22 connected to one charging control device 31 increases, and communication specifications become complicated. On the other hand, when the charging control device 31 is provided for each charging station 21 as in the present embodiment, the charging device 22 that is the connection target of the charging control device 31 is closest to the charging control device 31. The wiring 28 can be connected to the control device 31. Therefore, the length of the wiring 28 can be shortened. Further, since the charging devices 22 can be connected to the plurality of charging control devices 31 in a distributed manner, complication of communication specifications hardly occurs.

The effects of this embodiment will be described.
(1) In addition to the charging station 21 to which the charging control device 31 belongs, the charging control device 31 also calculates charging power by considering charging information of other charging stations 21. Therefore, it is possible to set an appropriate charging power according to the charging information. Moreover, by calculating the charging power based on the priority information, it becomes possible to preferentially distribute the power to the specific charging device 22.

(2) When the charging device 22 detects the connection of the electric vehicle 50 with the charging device 22 after the calculation of the charging power and before the calculation of the charging power is performed next, the charging power is calculated next. After that, the secondary battery 51 is charged. For example, the control performed by the charging control device 31 can be simplified as compared with the case where the charging power is calculated when the electric vehicle 50 is connected to the charging device 22.

The embodiment can be modified and implemented as follows. The embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
The charging control device 31 may calculate the charging power when the electric vehicle 50 is connected to the charging device 22. In this case, the time from when the electric vehicle 50 is connected to the charging device 22 to when the charging is started becomes short.

○ The charging control device 31 may cause the charging device 22 to charge when the electric vehicle 50 is connected to the charging device 22. For example, if there is a surplus in charging power, the charging control device 31 may charge the secondary battery 51 of the electric vehicle 50 connected to the charging device 22 with the surplus power.

The charging control device 31 of each charging station 21 may construct a network by wireless devices.
The network constructed by each charging control device 31 may be a bus type local area network or a ring type local area network. In these cases, the hub 32 for connecting the plurality of charge control devices 31 to each other may not be used.

Claims

A charging facility having a plurality of charging stations,
Each of the plurality of charging stations,
A plurality of charging devices configured to charge the secondary battery of the electric vehicle by the electric power supplied from the system power supply,
A charging control device provided so as to be able to communicate with the charging device and the host control device;
The charging control devices of the plurality of charging stations can acquire information of each other by building a network,
Each of the charging control devices of the plurality of charging stations,
Charging information, which is information about charging the secondary battery, a charging information acquisition unit configured to acquire from the charging device,
Priority information, which is information indicating which of the charging devices is to be preferentially distributed with power, a priority information acquisition unit configured to acquire from the upper control device,
Rechargeable power that is power that can be used in the charging facility, a rechargeable power acquisition unit configured to acquire from the host control device,
From the priority information, the charging information acquired by the charging information acquisition unit, and the charging information acquired from another charging station via the network, it is allocated to its own charging station among the rechargeable power. A calculator configured to calculate charging power,
Charging equipment equipped with.
The calculation unit is configured to calculate the charging power at each preset time,
When the charging device detects the connection of the electric vehicle with the charging device after the calculation of the charging power and before the calculation of the charging power is performed next, the calculation of the charging power is performed next. And then configured to charge the secondary battery,
The charging facility according to claim 1.
A method of controlling a charging facility having a plurality of charging stations,
Each of the plurality of charging stations includes a plurality of charging devices and a charging control device, and the charging device charges a secondary battery of an electric vehicle with electric power supplied from a system power supply,
The control method is
By the charging control device of the plurality of charging stations, to acquire information of each other by building a network,
By each of the charging control devices of the plurality of charging stations,
Communicating with the charging device and the host controller,
Obtaining charging information, which is information about charging the secondary battery, from the charging device,
Acquiring priority information, which is information indicating which of the charging devices is to be preferentially distributed with power, from the upper control device,
Obtaining rechargeable power, which is the power that can be used in the charging facility, from the host controller,
From the priority information, the acquired charging information, and the charging information acquired from another charging station via the network, calculate the charging power allocated to the charging station of the rechargeable power. A method for controlling charging equipment, comprising:
The control method may further be performed by each of the charging control devices of the plurality of charging stations,
Calculating the charging power for each preset time,
When the connection of the electric vehicle to the charging device is detected after the calculation of the charging power and before the calculation of the charging power is performed next, the charging is performed after the calculation of the charging power is performed next. The method of controlling charging equipment according to claim 3, further comprising: charging the secondary battery with a device.