JP5736546B2 - Car charge control device - Google Patents

Description

  The present invention relates to a vehicle charging control device that controls a vehicle charging unit that can charge a plurality of vehicles with power supplied from a power supply unit.

  2. Description of the Related Art Conventionally, a method for controlling charging power according to the public nature of an electric vehicle to be charged in a charging station that charges a plurality of electric vehicles at the same time is known (see, for example, Patent Document 1). In Patent Document 1, charging power to each electric vehicle is set in accordance with a predetermined priority within a range of power that can be supplied from an external power source. Thereby, electric power can be preferentially supplied to an electric vehicle having high publicity.

JP 2010-110173 A

  In the future, it is expected that there will be a need for electric vehicles equipped with a large-capacity on-board battery and charged at a charging station on the go.

  For example, charging stations of several tens or more that appear in a parking lot of a commercial facility may appear as charging stations. However, it is very expensive to provide a large-capacity charging facility that can meet the charging requirements of electric vehicles that have visited all rechargeable parking spaces.

  Therefore, it is desirable that the charging station controls the charging so that the charging request can be satisfied so as not to be as disadvantageous to the user as possible without increasing a certain installed capacity.

  However, in the conventional configuration, when the power that can be supplied from the external power source is exceeded, the charging power is controlled in the priority order set in advance for each vehicle. For this reason, regardless of whether the user is in a hurry or not, charging of a vehicle with a low priority is postponed. In some cases, a user who has been hurried but given up is forced to give up charging or stop charging halfway. For this reason, it has the subject that the operation rate of a charging station falls.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide an automobile charging control device that increases the operating rate of a charging station.

  In order to solve the above-described conventional problems, an automobile charging control apparatus according to an aspect of the present invention is an automobile charging control apparatus that controls an automobile charging section that can simultaneously charge power supplied from an electric power supply section to a plurality of automobiles. The vehicle stays in a parking facility provided with the vehicle charging unit, and satisfies all charging requests of a plurality of charging required vehicles that are vehicles to be charged that are connected to the vehicle charging unit while staying in the parking facility. Assuming that, the equipment capacity excess determination unit for determining whether the equipment capacity of the automobile charging unit exceeds a predetermined equipment capacity, and the equipment capacity of the automobile charging unit exceeds the predetermined equipment capacity If determined, out of the cars connected to the car charging unit, the longer the time that is the scheduled time from the completion of charging until the exit from the parking facility, A vehicle selection unit that selects at least one vehicle in advance, and a power control unit that controls the vehicle charging unit so that charging to the selected vehicle that is the vehicle selected by the vehicle selection unit is suppressed. Prepare.

  According to this structure, the control which suppresses the charge to the motor vehicle which has a margin in charge time is performed. For this reason, priority can be given to the charge to the motor vehicle which has no charge time. Thereby, it becomes possible to raise the operation rate of a charging station.

  Note that the present invention can be realized not only as an automobile charging control apparatus including such a characteristic processing unit, but also as a step of a process executed by a characteristic processing unit included in the automobile charging control apparatus. It can be realized as a charge control method. It can also be realized as a program for causing a computer to function as a characteristic processing unit included in the vehicle charge control device or a program for causing a computer to execute characteristic steps included in the vehicle charge control method. Further, it goes without saying that such a program can be distributed via a computer-readable non-transitory recording medium such as a CD-ROM (Compact Disc-Read Only Memory) or a communication network such as the Internet. .

  According to the vehicle charging control device of the present invention, control is performed to suppress charging of a vehicle having a sufficient charging time. For this reason, priority can be given to the charge to the motor vehicle which has no charge time. Thereby, it becomes possible to raise the operation rate of a charging station.

It is a schematic diagram and functional block diagram which show the structure of a charging station provided with the motor vehicle charging device in Embodiment 1. 6 is a diagram illustrating a screen display example of a charge setting menu in the first embodiment. FIG. It is a figure which shows the example of the charge request | requirement of the motor vehicle which visited the charging station in Embodiment 1 sequentially. 4 is a graph showing a total value of charging power in response to a request for charging a car visited in Embodiment 1 in time series. 3 is a graph showing the remaining amount of power of the power supply unit in the first embodiment in time series. 3 is a flowchart showing a flow of processing of the automobile charging device in the first embodiment. FIG. 3 is a schematic diagram for explaining a change of an automobile that procures electric power in the first embodiment. 6 is a diagram showing a display example of a settlement screen in the first embodiment. FIG. It is a schematic diagram and functional block diagram which show the structure of a charging station provided with the motor vehicle charging device in Embodiment 2. 6 is a graph showing a total value of charging power in response to a charging request of a car visited in Embodiment 2 in time series. 6 is a flowchart showing a process flow of the automobile charging apparatus in the second embodiment. FIG. 10 is a schematic diagram for explaining a change of an automobile that procures electric power in a second embodiment. It is a schematic diagram explaining the change of the motor vehicle which procures the electric power in the modification of Embodiment 2. 3 is a block diagram showing a hardware configuration of a computer system that realizes the automobile charging control apparatus according to Embodiments 1 and 2. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is limited only by the claims. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

  A vehicle charging control device according to another embodiment of the present invention is a vehicle charging control device that controls a vehicle charging unit that can simultaneously charge a plurality of vehicles with power supplied from a power supply unit, the vehicle charging unit And when the vehicle is staying at the parking facility, the vehicle is assumed to satisfy all charging requirements of a plurality of vehicles requiring charging that are vehicles to be charged that are connected to the vehicle charging unit. A facility capacity excess determining unit that determines whether or not the facility capacity of the charging unit exceeds a predetermined facility capacity, and the vehicle when the facility capacity of the vehicle charging unit is determined to exceed the predetermined facility capacity. Among cars connected to the charging unit, at least one automatic vehicle will be given priority as the allowance time, which is the scheduled time from the completion of charging to the exit from the parking facility, is larger. And car selecting unit for selecting, said so charged to the selected car car selecting unit is an automobile selected is inhibited, and a power control unit for controlling the vehicle charging unit.

  According to this structure, the control which suppresses the charge to the motor vehicle which has a margin in charge time is performed. For this reason, priority can be given to the charge to the motor vehicle which has no charge time. Thereby, it becomes possible to raise the operation rate of a charging station.

  Preferably, when it is assumed that the facility capacity excess determination unit satisfies all charging requirements of the plurality of charging-required vehicles, the power supply capability of the power supply unit as a facility capacity of the vehicle charging unit is a predetermined facility. It is determined whether or not the capacity is exceeded, and the vehicle selection unit is connected to the vehicle charging unit when it is determined that the power supply capacity of the power supply unit exceeds the predetermined facility capacity. From among the above, the longer the margin time is, the higher the priority is selected and at least one vehicle is selected, and the power control unit supplies power for charging the selected vehicle to a chargeable vehicle different from the selected vehicle. The vehicle charging unit is controlled to be discharged.

  According to this configuration, control is performed to procure electric power of a car having a sufficient charging time and charge another car with the procured power. For this reason, priority can be given to the charge to the motor vehicle which has no charge time. Thereby, it becomes possible to raise the operation rate of a charging station.

  Preferably, when it is determined that the power supply capability of the power supply unit exceeds the predetermined facility capacity, the vehicle selection unit charges the power from one vehicle to another vehicle. Until the power supply capacity does not exceed the predetermined facility capacity, the one vehicle selected from the vehicles connected to the vehicle charging unit is preferentially selected with a larger margin time.

  According to this configuration, it is possible to control charging so that the power supply capability of the power supply unit does not exceed a predetermined facility capacity.

  In addition, the amount of power necessary for charging when the equipment capacity excess determination unit assumes that all the plurality of charging-required vehicles are charged simultaneously from the amount of power that can be supplied to the vehicle from the power supply unit. When the value obtained by subtracting is less than the predetermined lower limit value, it is determined that the power supply capacity of the power supply unit exceeds the predetermined facility capacity, and the subtracted value is greater than or equal to the predetermined lower limit value. In this case, it may be determined that the power supply capability of the power supply unit does not exceed the predetermined facility capacity.

  According to this configuration, it is possible to control charging so that the amount of power that can be supplied from the power supply unit does not fall below the lower limit value.

  The power control unit may further control the vehicle charging unit so that the selected vehicle is charged from the power supply unit.

  According to this configuration, the electric power discharged for charging other automobiles can be recovered.

  In addition, the above-described vehicle charge control device further includes a charge request reception unit that receives the charge request including a charge request amount and a planned stay time in the parking facility from a chargeable vehicle, and the allowance time is the stay schedule. From the time, the time required to charge the charge required amount of power of the charge request, the discharge time of the power for charging the chargeable car, and the same power as the discharge required to charge the chargeable car It may be a time obtained by subtracting a charging time from the power supply unit of an amount of power.

  According to this configuration, the margin time can be accurately obtained.

  Preferably, when it is determined that the facility capacity of the vehicle charging unit exceeds the predetermined facility capacity, the vehicle selecting unit suppresses charging to a certain vehicle, so that the facility capacity of the vehicle charging unit is the predetermined capacity. Until the installation capacity is not exceeded, the vehicle having the larger margin time is preferentially selected from the vehicles connected to the vehicle charging unit as the vehicle.

  According to this configuration, it is possible to control charging so that the equipment capacity of the automobile charging unit does not exceed a predetermined equipment capacity.

  In addition, when it is assumed that all the plurality of charging-required vehicles are charged at the same time, the facility capacity excess determination unit is when the total value of the power flowing through the vehicle charging unit is larger than a predetermined upper limit value. Determining that the equipment capacity of the automobile charging unit exceeds the predetermined equipment capacity, and if the total value is less than or equal to the predetermined upper limit value, the equipment capacity of the automobile charging part exceeds the predetermined equipment capacity. You may decide not to.

  According to this configuration, the charging can be controlled so that the total value of the power flowing through the automobile charging unit does not exceed the upper limit value.

  Further, the power control unit may control the vehicle charging unit such that charging to the selected vehicle is temporarily suspended as suppression of charging to the selected vehicle.

  According to this configuration, the charging of the vehicle having a sufficient charging time is temporarily suspended, so that the charging of the vehicle having no charging time can be completed early.

  In addition, the above-described vehicle charge control device further includes a charge request reception unit that receives the charge request including a charge request amount and a planned stay time in the parking facility from a chargeable vehicle, and the allowance time is the stay schedule. It may be a time obtained by subtracting a time required for charging the required amount of power of the charge request and a temporary suspension time for charging from the time.

  According to this configuration, the margin time can be accurately obtained.

  In addition, the vehicle selection unit selects the selected vehicle again when the charge request is changed by the visit of the vehicle to the parking facility, the exit of the vehicle from the parking facility, or the completion of charging of the vehicle. You may do it.

  According to this configuration, when the charge request changes, the charging control method is changed, so that the charging station can be maintained at a high operating rate. For this reason, even if the automobile freely enters and exits from the charging station, it is possible to procure electric power from the optimum automobile at each time point.

  Preferably, the above-described vehicle charge control device may further include a charge management unit that transmits information indicating a preferential treatment for a predetermined transaction to the selected vehicle whose charging is suppressed.

  According to this configuration, it is possible to increase the number of automobiles that permit charging suppression. Therefore, since an automobile charging part can be controlled efficiently, the operating rate of a charging station can be increased.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In the first embodiment, a charging station in which an automobile charging device is installed will be described as an example.

  FIG. 1 is a schematic and functional block diagram showing a configuration of a charging station including an automobile charging device in the present embodiment.

  The automobile charging device 1 is disposed at the charging station 10.

  The vehicle charging device 1 includes a vehicle charging control device 100, a plurality of charging / discharging units 102, and a power supply unit 103.

  The charging / discharging unit 102 charges and discharges electric power with respect to the automobile 3. For example, the charging / discharging unit 102 performs a charging / discharging process for charging or discharging electric power to the automobile 3 after electrically connecting the power cable of the charging / discharging unit 102 to the automobile 3.

  The power supply unit 103 supplies charging power to the automobile 3. Specifically, the power supply unit 103 includes a power storage unit that stores power, a generator connected to the power storage unit, a power grid, and the like. The power storage unit stores the power received by the charge / discharge unit 102. Alternatively, the power storage unit discharges the stored power to the charge / discharge unit 102. The power storage unit is, for example, any type of storage battery such as a lithium ion battery, a lead storage battery, a sodium / sulfur battery, or a nickel cadmium battery. The power storage unit receives and stores power from the power grid of the electric power company. The power storage unit stores the electric power generated by the generator.

  The plurality of charging / discharging units 102 and the power supply unit 103 constitute a vehicle charging unit 108 that can charge the power supplied from the power supply unit 103 to the plurality of vehicles 3 simultaneously. Each charging / discharging unit 102 is installed for each parking space of the automobile 3 that has visited the charging station 10. It is assumed that the automobile 3 is connected to the charging / discharging unit 102 while parked in the parking space.

  The vehicle charging control device 100 is a device that controls the above-described vehicle charging unit 108, and includes a charge request receiving unit 101, a charge management unit 104, a power excess excess determination unit 105, a procurement margin time calculation unit 106, And a control unit 107.

  The charging request receiving unit 101 receives a charging request from the automobile 3. The charging request receiving unit 101 receives a charging request including a charging request amount and a scheduled staying time at the charging station 10 from a chargeable automobile to be described later. Here, the chargeable vehicle is the vehicle 3 to be charged that stays at the charging station 10 including the vehicle charging unit 108 and is connected to the vehicle charging unit 108 while staying at the charging station 10. That is, the chargeable vehicle is a vehicle 3 that is parked in the parking space of the charging station 10 and is being charged from the vehicle charging unit 108 or waiting for charging.

  The charge management unit 104 manages charge / discharge of the automobile 3. Specifically, the charge management unit 104 receives power from the power supply unit 103 in accordance with the charge request received by the charge request reception unit 101 and supplies the power to the automobile 3 via the charge / discharge unit 102. Alternatively, the charge management unit 104 receives power from the automobile 3 and accumulates the received power in a power storage unit included in the power supply unit 103. In addition, the charge management part 104 transmits the information which shows the preferential treatment of a predetermined | prescribed transaction with respect to the motor vehicle 3 by which charge was suppressed so that it may mention later.

  The power amount excess determination unit 105 determines whether or not the facility capacity of the vehicle charging unit 108 exceeds a predetermined facility capacity when it is assumed that all charging requests of a plurality of charging-required vehicles are satisfied. Here, the equipment capacity of the automobile charging unit 108 is the power supply capability of the power supply unit 103. More specifically, the power amount excess determination unit 105 performs charging when it is assumed that all of the plurality of chargeable vehicles are charged simultaneously from the amount of power that can be supplied from the power supply unit 103 to the vehicle 3. When the value obtained by subtracting the necessary power amount is less than a predetermined lower limit value, it is determined that the power supply capability of the power supply unit 103 exceeds a predetermined facility capacity. The power amount excess determination unit 105 determines that the power supply capability of the power supply unit 103 does not exceed a predetermined facility capacity when the subtracted value is equal to or greater than the predetermined lower limit value.

  The procurement margin time calculation unit 106 calculates a procurement margin time (margin time) that is a scheduled time from the completion of charging to the exit from the charging station 10, and selects the automobile 3 according to the calculated procurement margin time. That is, the procurement allowance time calculation unit 106 determines that the facility capacity of the automobile charging unit 108 exceeds the predetermined facility capacity, that is, determines that the power supply capability of the power supply unit 103 exceeds the predetermined facility capacity. In such a case, at least one vehicle is selected with priority as the procurement margin time increases from among the vehicles connected to the vehicle charging unit. The number of rechargeable vehicles to be selected may be determined in advance. In addition, a car requiring charging may be selected until the power supply capacity of the power supply unit 103 does not exceed a predetermined facility capacity. In other words, the procurement allowance time calculation unit 106, if it is determined that the power supply capacity of the power supply unit 103 exceeds a predetermined facility capacity, the power supply unit if the power is charged from one vehicle 3 to another vehicle 3. Until the power supply capacity of 103 does not exceed the predetermined facility capacity, as the one car 3, the car with the larger procurement margin time is selected preferentially from the cars connected to the car charging unit. Also good. In other words, when it is determined that the power supply capacity of the power supply unit 103 exceeds the predetermined facility capacity, the procurement allowance time calculation unit 106 sets the vehicle 3 connected to the vehicle charging unit as one vehicle 3. From among them, priority is given to the items with the largest procurement margin time. The procurement allowance time calculation unit 106 performs this selection process until the power supply capability of the power supply unit 103 does not exceed a predetermined facility capacity if the power is charged from one vehicle 3 to another vehicle 3.

  The power control unit 107 controls the vehicle charging unit 108 so that charging of the selected vehicle, which is the vehicle 3 selected by the procurement margin time calculating unit 106, is suppressed. In other words, the power control unit 107 controls the vehicle charging unit 108 so that the selected vehicle discharges the electric power for charging the charged vehicle that is different from the selected vehicle from the selected vehicle. The power control unit 107 further controls the vehicle charging unit 108 so that the selected vehicle is charged from the power supply unit 103.

  FIG. 2 is a diagram illustrating an example of a charge setting menu displayed on the screen of the in-vehicle terminal of the automobile 3 that has visited the charging station 10.

  The in-vehicle terminal displays the power amount information of the own vehicle and the information received from the charging station 10 on the screen. For example, the window 1101 displays that the current in-vehicle battery capacity is 15 kWh, the current charge price is 25 yen / kWh, and the charge price when using charge control is 20 yen / kWh. The charge price at the time of using the charge control is a charge price when the other vehicle 3 is lent by the power control according to the power control of the present embodiment, which will be described later, and is set lower than the normal charge price.

  The user refers to the displayed information and sets a request related to charging. For example, “request charge amount” is set in window 1102, “scheduled stay time” is set in window 1103, and “permission or disapproval of charge control” is set in window 1104. The permission or non-permission of charge control is an item for setting whether or not to receive power control according to the present embodiment described later. After setting these data, the user presses an “execute” button 1105 to confirm the charge request.

  The charge request indicating the “required charge amount”, “scheduled stay time”, and “permission or non-permission of charge control” set via the charge setting menu is received by the charge request receiving unit 101. If the vehicle 3 that has visited the charging station 10 always permits charging control, the charging request may not include “allowing or not permitting charging control”. That is, the charge request may include only the “required charge amount” and the “scheduled stay time”.

  The charge setting menu shown in FIG. 2 may be displayed on a terminal provided in the charging station 10. In this case, when the user visits the charging station 10, the user performs a charging request by performing the same input operation as that of the in-vehicle terminal using the terminal.

  FIG. 3 shows an example of a charging request for the automobile 3 that has successively visited the charging station 10. The charge request includes, for example, “arrival time”, “automobile identifier”, “required charge amount”, and “scheduled stay time”. “Arrival time” is the time when the automobile 3 arrives at the charging station 10. The “arrival time” is, for example, the time when the “execute” button 1105 is pressed in the charge setting menu shown in FIG. The “automobile identifier” is an identifier for identifying the automobile 3, and may be a member identifier for charging or a number described on a license plate, for example. The “automobile identifier” may be automatically transmitted from the automobile 3 to the charging request reception unit 101, for example, or is input when the user contacts an IC card in which the member identifier is recorded with a predetermined terminal. It may be a thing. The “required charge amount” is a charge amount that the automobile 3 requests from the charging station 10 and is set by the user as described with reference to FIG. 2, for example. The “scheduled stay time” is a time when the user is scheduled to stay at the charging station 10 and is set by the user as described with reference to FIG. 2, for example.

  The charge request in FIG. 3 does not include “permit or disallow charge control” set in the charge setting menu in FIG. 2, but may include “allow or disallow charge control”. good.

  FIG. 4 is a graph showing the total value of charging power (unit: kW) for responding to the charging request of the automobile 3 that has visited the charging station 10 as shown in FIG. 3 in time series. The horizontal axis indicates time, and the vertical axis indicates the total value of charging power.

  When the automobile 3 visits, the charging power increases, and when charging is completed, the charging power decreases. When the charging power of a plurality of automobiles 3 is integrated, a line graph like the solid line in FIG. 4 is obtained.

  Actually, the charging power of the automobile 3 is not exactly a horizontal broken line because the charging current is adjusted in accordance with the condition of the on-vehicle battery, but it is simplified for the sake of explanation here. That is, the charging power of each automobile 3 is assumed to be a constant value.

  FIG. 5 shows the remaining amount of electric power (unit: kWh) of the power supply unit 103 when the automobile 3 is charged according to the integrated value (total value) of the charging power shown in FIG. The horizontal axis indicates time, and the vertical axis indicates the remaining amount of power in the power supply unit 103. The power supply unit 103 temporarily stores the power received from the generator or the power grid in the power storage unit, and then discharges it to the charge / discharge unit 102. For this reason, FIG. 5 particularly shows the remaining amount of power in the power storage unit included in the power supply unit 103 by a solid line.

  The broken line indicates the lower limit value of the amount of power that can be supplied by the power supply unit 103. In FIG. 5, when charging is performed according to the charging request, the remaining power amount of the power supply unit 103 exceeds the suppliable power amount of the power supply unit 103 at a certain time, that is, the remaining power amount of the power supply unit 103. It shows that the amount is below the lower limit of the amount of power that can be supplied.

  Here, in the present embodiment, in order to prevent the remaining amount of power of the power supply unit 103 from exceeding the suppliable power amount of the power supply unit 103, any one of the vehicles 3 requiring charging is required. Control power to procure power. That is, the vehicle that needs to be charged is charged while temporarily obtaining the power of the vehicle 3 that has sufficient remaining battery capacity and charging time. Thereafter, when the demand for charging decreases or the amount of power that can be supplied from the power grid to the power storage unit does not exceed the suppliable power amount of the power supply unit 103, the vehicle 3 that has procured power To charge.

  Next, the operation of the automobile charging device 1 of the present embodiment configured as described above will be described with reference to the flowchart of FIG.

  The car charging device 1 is activated before the business of the charging station 10 is started, and does not end until the manager inputs an input after the business of the charging station 10 ends.

  (Step S <b> 101) The charge request receiving unit 101 receives a charge request for a newly visited car 3. The charge management unit 104 adds the charge request to the charge request list. The charge request list is, for example, data in the format shown in FIG.

  (Step S <b> 102) The charging request receiving unit 101 performs a settlement process for the automobile 3 that has been charged. The charge management unit 104 deletes the charge request from the charge request list. The settlement process will be described later.

  (Step S <b> 103) The power amount excess determination unit 105 integrates the power of the charge request according to the charge request list managed by the charge management unit 104.

  (Step S104) The power supply excess determination unit 105 can supply the power supply unit 103 with the remaining amount of power stored in the power supply unit 103 when charging is performed with the charging power integrated in (Step S103). It is determined whether the amount of power is exceeded. If the remaining power amount of the power supply unit 103 exceeds the suppliable power amount of the power supply unit 103, the process proceeds to (Step S107). When the remaining power amount of the power supply unit 103 does not exceed the suppliable power amount of the power supply unit 103, the process proceeds to (Step S105).

  (Step S <b> 105) The charge management unit 104 transmits to the charge / discharge unit 102 an instruction to charge the vehicle 3 with the amount of power per unit time according to the charge request of the vehicle 3 connected to the charge / discharge unit 102. . However, if an instruction for procurement control is issued from the power control unit 107 in (step S108), which will be described later, the process of (step S105) is not performed, and the power of the automobile 3 is discharged according to the instruction in (step S108). Control is performed.

  (Step S <b> 106) When the administrator inputs to end the vehicle charging device 1 (YES in Step S <b> 106), the vehicle charging device 1 ends the process. If there is no input for ending the automobile charging device 1 (NO in step S106), the process returns to (step S101) at a fixed timing (unit time). By returning to the fixed timing (step S101), even if the automobile 3 freely enters and exits the charging station 10, electric power can be procured from the optimum automobile 3 at each time point. Instead of returning to the predetermined timing (step S101), the charging request is changed by visiting the charging station 10 of the car 3, leaving the charging station 10 of the car 3, or completing the charging of the car 3. In such a case, the process may return to (Step S101).

  (Step S107) The procurement allowance time calculation unit 106 calculates the procurement allowance time that is the scheduled time from the completion of charging to the exit for each connected automobile 3, and the automobile 3 having the largest procurement allowance time. Select. The procurement allowance time can be obtained by subtracting the time required for charging from the estimated staying time. The time required for charging is the time required to charge the required amount of charge for the charge request, the discharge time of the power to charge the car that needs to be charged, and the discharge to charge the car that needs to be charged. Is the total time with the charging time from the power supply unit 103 of the same amount of power. The time required to charge the power required for the charge request is obtained by dividing the charge request by the charge power per unit time. The discharge time of the power for charging the chargeable automobile and the charge time from the power supply unit 103 of the same amount of power as that discharged for charging the chargeable automobile are the same time. Actually, the charging power per unit time varies depending on the status of the in-vehicle battery. For this reason, the time required for charging may be accurately obtained according to the status of the on-vehicle battery.

  Note that the number of automobiles 3 selected by the procurement margin time calculation unit 106 is not limited to one, and a predetermined number may be selected from those having a large procurement margin time. Further, the procurement allowance time calculation unit 106 may select the automobile 3 until the remaining amount of power in the power supply unit 103 does not fall below the lower limit value. In other words, the procurement allowance time calculation unit 106 charges the vehicle as one vehicle 3 until the remaining amount of electric power in the power supply unit 103 does not fall below the lower limit when charging power from one vehicle 3 to another vehicle 3. You may make it preferentially select from the motor vehicles connected to a part, so that a procurement margin time is large.

  (Step S108) The power control unit 107 pauses charging the automobile 3 selected in (Step S107), and issues an instruction to the charging management unit 104 to procure electricity by discharging the automobile 3 (Step S108). The process proceeds to S105). The charge management unit 104 stops charging the selected automobile 3 according to the instruction.

  According to the flowchart of FIG. 6, the processes of (Step S107) and (Step S108) are repeatedly executed, the timing of visiting a new vehicle 3 to the charging station 10, the timing of leaving the vehicle 3 from the charging station 10, and the charge / discharge At the timing of completion of charging of the automobile 3 connected to the unit 102 or the timing according to the loop of the flowchart, the automobile 3 that suspends charging and procures power is changed.

  The change of the automobile 3 that procures electric power will be described with reference to the schematic diagram of FIG.

  FIG. 7A shows a state where three automobiles D, E, and F are connected to the charging station 10 and charged at a certain point in time. For each automobile 3, the entire rectangle represents the estimated stay time, the diagonal grid area 701 represents the charging time, and the white area 702 represents the procurement allowance time. At this time, it is assumed that all three automobiles 3 are being charged and the remaining amount of the power supply unit 103 has not exceeded the lower limit.

  FIG. 7B shows a state where a new car G has visited the state of FIG. 7A and four cars 3 are connected to the charging station 10. For each automobile 3, a region 703 represents a time during which power is being procured (discharged), and a region 704 represents a charging time from the power supply unit 103 of the same amount of power as the discharged power.

  It is assumed that the remaining amount of power in the power supply unit 103 has fallen below the lower limit at the present time due to the total value of the power required for charging being increased by the visit of the automobile G. When the value falls below the lower limit, power procurement control is executed. That is, the procurement margin time calculation unit 106 calculates the procurement margin time for each automobile 3. The procurement margin time calculation unit 106 selects the automobile F having the longest procurement margin time. The power control unit 107 pauses the charging of the selected automobile F, starts procurement of electric power from the automobile F, and continues to charge the automobiles D, E, and G. When the procurement of electric power is started from the automobile F, the electric power procurement time and the recharge time of the electric power purchased are gradually subtracted from the procurement margin time. For this reason, the procurement margin time of the automobile F is gradually reduced.

  At time t1, because the procurement allowance time of the car D becomes larger than the procurement allowance time of the car F, the power control unit 107 stops charging the car D, starts to buy power from the car D, and Resume charging.

  Since charging of the vehicle E is completed at time t2, the power control unit 107 resumes charging of the vehicle D.

  Since the electric vehicle 3 from which the electric power is procured will be recharged later, it can be understood that the electric power is lent to another vehicle 3 and then returned later.

  In this way, charging of the automobile 3 with a large procurement allowance time is always stopped, and power is procured from the automobile 3, so that charging of the automobile 3 of the user having sufficient time for charging is postponed and charging time is increased. It is possible to charge all the automobiles 3 without any disadvantages without waiting for a user who has no sufficient margin.

  FIG. 8 shows a display example of a settlement screen on the terminal of the charging station 10 or the in-vehicle terminal of the automobile 3 for the automobile 3 that has been charged. This settlement screen is displayed in the settlement process in (Step S102) of FIG. Windows 1201 to 1206 are displayed on the settlement screen.

  The window 1201 displays the same content as that displayed in the window 1101 of FIG. That is, the current in-vehicle battery capacity, the current charge price, and the charge price when using charge control are displayed for confirmation. However, the in-vehicle battery capacity is increased by being charged.

  The window 1202 displays the charge request amount set by the user.

  The window 1203 displays the amount of power actually charged. When charging is completed correctly and the checkout process is performed, the charge request amount displayed in the window 1202 is the same value.

  In window 1204, the amount of power lent to other automobiles 3 is displayed. In FIG. 8, it is shown that the amount of power of 5 kWh is lent and charged later.

The window 1205 displays the user's payment amount. Of the requested charge amount of 10 kWh, normal charging at a charging price of 25 yen / kWh was performed at 5 kWh, and charging for the amount of power lent at a charging price of 20 yen / kWh was performed at 5 kWh. Therefore, the payment amount is
25 × 5 + 20 × 5 = 125 + 100 = 225 yen.

  The user will be 25 yen cheaper than the payment amount (25 × 10 = 250 yen) when all of the charge request amount is performed by normal charging. As described above, information indicating a payment amount based on a cheap charge price is transmitted from the charge management unit 104 to the car 3 that has lent power to another car 3.

  When the user presses the settlement button 1206, the settlement process is completed.

  As described above, according to the present embodiment, power control is performed so as to procure the power of the vehicle 3 with a sufficient remaining battery capacity and charging time, and to charge the other vehicle 3 with the procured power. Do. For this reason, priority can be given to the charge to the automobile 3 having no charge time. Thereby, it becomes possible to increase the operating rate of the charging station 10.

  Note that the execution order of (Step S101) and (Step S102) may be reversed.

  In addition, although the charging control permission or disapproval has been described as accepting user input at the time of setting the charging request, user input may be accepted when power is procured. In that case, since the user may not be in the car 3, the user input may be received by a remote communication unit such as a mobile phone.

  In addition, although it has been described that the procured power is charged and returned, the power may be sold as it is without being charged. That is, even if the automobile 3 that does not require charging and is sold by discharging electric power is included, the present invention is established.

(Embodiment 2)
In the first embodiment, an example has been described in which power is procured from a vehicle and another vehicle is charged. On the other hand, in the present embodiment, an example of controlling charging when the charging request exceeds the power capacity (unit: kW) of the automobile charging device with simple equipment that performs charging only without procuring electric power from the automobile. Will be explained.

  FIG. 9 is a schematic diagram and functional block diagram showing the configuration of a charging station to which the automobile charging device in the present embodiment is applied. As shown in FIG. 9, the vehicle charging device 2 according to the present embodiment replaces the charging / discharging unit 102 with the charging unit 301 in the configuration of the vehicle charging device 1 according to the first embodiment, and replaces the vehicle charging control device 100 with the vehicle charging. The vehicle charging unit 108 is replaced with a vehicle charging unit 208 instead of the control device 200.

  The charging unit 301 charges the automobile 3 with electric power. For example, the charging unit 301 performs a charging process of charging the vehicle 3 with electric power after electrically connecting the power cable of the charging unit 301 to the vehicle 3.

  The power supply unit 103 is the same as that shown in the first embodiment.

  The plurality of charging units 301 and the power supply unit 103 constitute a vehicle charging unit 208 that can charge the power supplied from the power supply unit 103 to the plurality of vehicles 3 at the same time. Each charging unit 301 is installed for each parking space of the automobile 3 that has visited the charging station 20. It is assumed that the automobile 3 is connected to the charging unit 301 while parked in the parking space.

  The vehicle charging control device 200 is a device that controls the vehicle charging unit 208 described above. The charging request receiving unit 101, the charging management unit 104, the power excess determination unit 201, the idle margin time calculation unit 202, and the power control. Part 207.

  Charging request reception unit 101 and charging management unit 104 perform the same processing as charging request reception unit 101 and charging management unit 104 included in vehicle charging control apparatus 100 of the first embodiment. Therefore, detailed description thereof will not be repeated here.

  The power excess determination unit 201 determines whether or not the facility capacity of the vehicle charging unit 208 exceeds a predetermined facility capacity when it is assumed that all charging requests of a plurality of charging-required vehicles are satisfied. Specifically, when the power excess determination unit 201 assumes that all the plurality of vehicles requiring charging are charged at the same time, the total value of the power flowing through the vehicle charging unit 208 is larger than a predetermined upper limit value. Determines that the equipment capacity of the automobile charging unit 208 exceeds a predetermined equipment capacity, and determines that the equipment capacity of the automobile charging part 208 does not exceed the predetermined equipment capacity when the total value is equal to or less than a predetermined upper limit value. To do.

  The idle margin time calculation unit 202 calculates an idle margin time (margin time) that is a scheduled time from when charging is completed until the vehicle exits the charging station 20, and selects the vehicle 3 according to the calculated idle margin time. That is, when it is determined that the equipment capacity of the vehicle charging unit 208 exceeds a predetermined equipment capacity, the idle time calculation unit 202 has a longer idle time among the cars connected to the automobile charging unit. At least one automobile 3 is selected with priority. Specifically, the idle time calculation unit 202 determines that the equipment capacity of the car charging unit 208 exceeds a predetermined equipment capacity, that is, the total value of the power flowing through the car charging unit 208 is greater than a predetermined upper limit value. If the charging of a certain vehicle 3 is temporarily stopped, the vehicle connected to the vehicle charging unit as a certain vehicle 3 until the facility capacity of the vehicle charging unit 208 does not exceed a predetermined facility capacity. From among the above, priority is given to the one having a larger idle time.

  The power control unit 207 controls the vehicle charging unit 208 so that charging to the vehicle 3 selected by the suspension margin time calculating unit 202 is temporarily stopped.

  The charging setting menu displayed on the screen of the in-vehicle terminal of the automobile 3 that has visited the charging station 20 is as described in the first embodiment with reference to FIG.

  Moreover, the example of the charge request | requirement of the motor vehicle 3 which visited the charging station 20 sequentially is as having demonstrated using FIG. 3 in Embodiment 1. FIG.

  FIG. 10 is a graph showing the total value of charging power (unit: kW) for responding to the charging request of the visited automobile 3 in time series.

  FIG. 10 is a graph in which the total value of the charging power in FIG. 4 is shown in time series, and an upper limit value (the power capacity of the vehicle charging device 2) of the total power flowing through the vehicle charging unit 208 is added. . FIG. 10 shows that when the charging power according to the charging request is integrated, the power capacity may be exceeded at some point.

  In the present embodiment, it is assumed that the charging power of each automobile 3 is equal and constant for simplification of description. However, the charging power may be different for each automobile 3. Also, the charging power may be changed over time, such as gradually increasing the charging power at the start of charging and gradually decreasing the charging power at the end of charging.

  Here, in the present embodiment, control is performed to suppress the charging power so that the total value of the charging power does not exceed the power capacity. That is, when the total value of the charging power exceeds the power capacity, priority is given to the automobiles 3 instead of suppressing the charging power equally for all the automobiles 3. As a result, the automobile 3 with the higher priority is charged first, and charging of the automobile 3 with the lower priority is suspended until the total power requested for charging does not exceed the power capacity. By performing such control, as indicated by a broken line 1000 in the graph of FIG. 10, the total power value is controlled so as not to exceed the power capacity, and the power of the portion of the power that has exceeded the power capacity is controlled. It is deferred and charged. At this time, the priority order is determined on the basis of the idle time so that there is no disadvantage for the user. In other words, the priority order is determined so that charging is delayed as the pause time increases.

  Next, operation | movement of the motor vehicle charging device 2 of this Embodiment comprised as mentioned above is demonstrated using the flowchart of FIG.

  The vehicle charging device 2 is activated before the business of the charging station 20 is started, and does not end until the administrator inputs an end after the business of the charging station 20 ends.

  Since the processes from (Step S101) to (Step S103) and (Step S105) and (Step S106) are the same as those in the second embodiment, the description thereof is omitted.

  (Step S201) The power excess determination unit 201 determines whether or not the total value (integrated value) of the charging power calculated in (Step S103) exceeds the power capacity of the automobile charging device 2. If the total value exceeds the power capacity, the process proceeds to (Step S202), and if not, the process proceeds to (Step S105).

  (Step S202) The idle time calculation unit 202 calculates an idle time, which is a scheduled time from the completion of charging to the exit, for each connected vehicle 3, and the automobile 3 having the longest idle time. Select. The suspension allowance time is obtained by subtracting the time required for charging from the estimated staying time. The time required for charging is the total time of the time required to charge the amount of power required for charging and the temporary suspension time for charging. The time required to charge the power required for charging is obtained by dividing the required charging amount by the charging power per unit time.

  (Step S203) The power control unit 107 outputs an instruction to stop charging the vehicle 3 selected in (Step S202) to the charge management unit 104, and proceeds to (Step S105). The charge management unit 104 stops charging the selected automobile 3 according to the instruction.

  The processes of (Step S202) and (Step S203) are repeated according to the flowchart of FIG. 11, and the timing of visiting the charging station 20 of a new car 3, the timing of leaving the car 3 from the charging station 20, At the timing of completion of charging of the connected automobile 3 or the timing according to the loop of the flowchart, the automobile 3 that stops charging is changed.

  The change of the automobile 3 to be paused will be described with reference to the schematic diagram of FIG. The car charging device 2 will be described on the assumption that up to three cars 3 can be charged simultaneously.

  FIG. 12A shows a state in which three automobiles D, E, and F are connected to the charging station 20 at a certain point in time. For each automobile 3, the entire rectangle represents the estimated stay time, the diagonal grid area 1401 represents the charging time, and the white area 1402 represents the idle time. At present, all three units are being charged, and the total value of the charging power does not exceed the power capacity of the automobile charging device 2.

  A case where the automobile G newly visits the state shown in FIG. 12A will be described with reference to FIG. Due to the visit of the automobile G, the number of automobiles 3 having charging requests becomes four and the power capacity of the automobile charging device 2 is exceeded, so that the charging power is controlled. That is, the idle time calculation unit 202 calculates the idle time for each automobile 3. The idle margin time calculation unit 202 selects the automobile F having the longest idle margin time. The power control unit 207 suspends charging for the selected automobile F and charges the automobiles D, E, and G. The pause time is indicated by area 1403. When charging of the vehicle F is suspended, the charging suspension time of the vehicle F is gradually subtracted from the suspension margin time. For this reason, the suspension time of the automobile F is gradually reduced.

  At time t1, since the suspension allowance time of the automobile D becomes longer than the suspension allowance time of the automobile F, the power control unit 207 pauses the charging of the automobile D and restarts the charging of the automobile F.

  Since charging of the vehicle E is completed at time t2, the power control unit 207 restarts charging of the vehicle D.

  In this way, by always suspending charging of the automobile 3 having a long idle time, the charging of the automobile 3 of the user having sufficient time for charging is postponed, and without waiting for the user having no time for charging. It is possible to charge all automobiles 3 without any disadvantage.

  The display example of the settlement screen on the terminal of the charging station 20 or the in-vehicle terminal of the automobile 3 for the automobile 3 that has been charged is the same as that described in Embodiment 1 with reference to FIG.

  Since the difference between the embodiment, the second embodiment, and the first embodiment is a difference in the power operation method of the charging station 20, the effect for the user is the same.

  As described above, according to the present embodiment, the priority order of the automobile 3 having a charging time margin is lowered, and the charging of the automobile 3 having no charging time margin is given priority. Thereby, it becomes possible to increase the operating rate of the charging station 20.

(Modification of Embodiment 2)
In the second embodiment, charging is suppressed by stopping charging. However, charging may be suppressed by reducing charging power as compared with normal charging.

  For example, when the total value of charging power exceeds the power capacity, the idle margin time calculation unit 202 may select the two cars 3 having the long idle margin time.

  In addition, the power control unit 207 performs control to charge the two automobiles 3 selected by the idle time calculation unit 202 by half the charging power compared to the normal time. Thereby, it is possible to charge the two automobiles 3 with one electric power.

  The change of the automobile 3 that halves the charging power will be described with reference to the schematic diagram of FIG.

  FIG. 13A is the same as FIG. Therefore, detailed description thereof will not be repeated.

  A case where the automobile G newly visits the state shown in FIG. 13A will be described with reference to FIG. Due to the visit of the automobile G, the number of automobiles 3 having charging requests becomes four and the power capacity of the automobile charging device 2 is exceeded, so that the charging power is controlled. That is, the idle time calculation unit 202 calculates the idle time for each automobile 3. The suspension margin time calculation unit 202 selects two automobiles F and D from those having a large suspension margin time. The power control unit 207 halves the charging power for the selected automobiles F and D, and charges the automobiles E and G. The time during which charging power is suppressed is indicated by area 1404. By halving the charging power of the automobiles F and D, it is possible to charge the four automobiles 3 with the charging power of three cars. For this reason, the total value of the charging power does not exceed the power capacity of the automobile charging device 2. When the charging of the cars F and D is suppressed, the charging suppression time of the cars F and D is gradually subtracted from the suspension margin time. For this reason, the suspension time of the automobile F is gradually reduced.

  Since charging of the vehicle E is completed at time t1, charging suppression of the vehicle F is released, and the vehicles G, F, and D are charged with normal power.

  For this reason, according to the present modification, it is possible to increase the operating rate of the charging station 20 by suppressing charging of the automobile 3 having a time margin for charging without stopping.

  As mentioned above, although the vehicle charging control apparatus according to the present invention has been described based on the first and second embodiments, the present invention is not limited to the above-described embodiments.

  For example, in the charge setting menu shown in FIG. 2, “payment amount” for charging may be displayed together with “required charge amount” or instead of “required charge amount”. When the user sets the “payment amount”, the “request amount” corresponding to the “payment amount” is obtained by dividing the “payment amount” by the current charge price (for example, 25 yen / kWh). The terminal may calculate.

  In addition, in the charge setting menu shown in FIG. 2, a “full charge” button for charging the in-vehicle battery until the power becomes full is displayed together with “required charge amount” or instead of “required charge amount”. May be. When the user presses the “full charge” button, the in-vehicle terminal may calculate the “required charge amount” by subtracting the currently stored electric energy from the storable electric energy of the in-vehicle battery.

  Note that the vehicle charging control apparatus according to the above-described embodiment can also be realized by a computer.

  FIG. 14 is a block diagram showing a hardware configuration of a computer system that realizes the automobile charging control apparatus.

  The vehicle charging control device includes a computer 34, a keyboard 36 and a mouse 38 for giving instructions to the computer 34, a display 32 for presenting information such as the calculation result of the computer 34, and a program executed by the computer 34. A CD-ROM (Compact Disc-Read Only Memory) device 40 for reading and a communication modem (not shown) are included.

  A program, which is a process performed by the automobile charging control device, is stored in a CD-ROM 42 that is a computer-readable recording medium, and is read by the CD-ROM device 40. Alternatively, the data is read by the communication modem 52 through a computer network.

  The computer 34 includes a CPU (Central Processing Unit) 44, a ROM (Read Only Memory) 46, a RAM (Random Access Memory) 48, a hard disk 50, a communication modem 52, and a bus 54.

  The CPU 44 executes a program read via the CD-ROM device 40 or the communication modem 52. The ROM 46 stores programs and data necessary for the operation of the computer 34. The RAM 48 stores data such as parameters at the time of program execution. The hard disk 50 stores programs and data. The communication modem 52 communicates with other computers via a computer network. The bus 54 connects the CPU 44, the ROM 46, the RAM 48, the hard disk 50, the communication modem 52, the display 32, the keyboard 36, the mouse 38, and the CD-ROM device 40 to each other.

  Furthermore, some or all of the constituent elements constituting each of the above-described devices may be configured by one system LSI (Large Scale Integration). The system LSI is an ultra-multifunctional LSI manufactured by integrating a plurality of components on a single chip, and specifically, a computer system including a microprocessor, ROM, RAM, and the like. . A computer program is stored in the RAM. The system LSI achieves its functions by the microprocessor operating according to the computer program.

  Furthermore, some or all of the constituent elements constituting each of the above-described devices may be configured from an IC card that can be attached to and detached from each device or a single module. The IC card or module is a computer system that includes a microprocessor, ROM, RAM, and the like. The IC card or the module may include the super multifunctional LSI described above. The IC card or the module achieves its function by the microprocessor operating according to the computer program. This IC card or this module may have tamper resistance.

  Further, the present invention may be the method described above. Further, the present invention may be a computer program that realizes these methods by a computer, or may be a digital signal composed of the computer program.

  Furthermore, the present invention provides a non-transitory recording medium that can read the computer program or the digital signal, for example, a flexible disk, a hard disk, a CD-ROM, an MO, a DVD, a DVD-ROM, a DVD-RAM, a BD ( It may be recorded on a Blu-ray Disc (registered trademark)), a semiconductor memory, or the like. The digital signal may be recorded on these non-temporary recording media.

  In the present invention, the computer program or the digital signal may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, a data broadcast, or the like.

  The present invention may be a computer system including a microprocessor and a memory, wherein the memory stores the computer program, and the microprocessor operates according to the computer program.

  Further, by recording the program or the digital signal on the non-temporary recording medium and transferring it, or transferring the program or the digital signal via the network or the like, another independent computer It may be implemented by the system.

  Furthermore, the above embodiment and the above modification examples may be combined.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The vehicle charging control device according to the present invention has a function of efficiently charging a plurality of vehicles without deteriorating the user's profit without exceeding the equipment capacity of the charging station, and the vehicle charging control device for the charging station. Useful as such.

DESCRIPTION OF SYMBOLS 1, 2 Car charging device 3 Car 10, 20 Charging station 101 Charging request reception part 102 Charging / discharging part 103 Electric power supply part 104 Charging management part 105 Power amount excess determination part 106 Procurement allowance time calculation part 107, 207 Electric power control part 201 Electric power Excess determination unit 202 Quiet time calculation unit 301 Charging unit

Claims (14)

A vehicle charging control device for controlling a vehicle charging unit capable of simultaneously charging a plurality of vehicles with power supplied from a power supply unit,
When it is assumed that the vehicle stays in a parking facility provided with the vehicle charging unit and satisfies all charging requests of a plurality of charging vehicles that are charging target vehicles connected to the vehicle charging unit while staying in the parking facility. In addition, an equipment capacity excess determination unit that determines whether the equipment capacity of the automobile charging unit exceeds a predetermined equipment capacity, and
When it is determined that the equipment capacity of the car charging unit exceeds the predetermined equipment capacity, from among the cars connected to the car charging part until the vehicle exits from the parking facility after charging is completed. A car selection unit that preferentially selects at least one car with a larger margin time that is a scheduled time;
A vehicle charge control device comprising: a power control unit that controls the vehicle charging unit such that charging to a selected vehicle that is a vehicle selected by the vehicle selection unit is suppressed. When it is assumed that the facility capacity excess determination unit satisfies all the charging requirements of the plurality of charging vehicles, the power supply capacity of the power supply unit as the facility capacity of the vehicle charging unit exceeds a predetermined facility capacity. Determine whether or not to
The vehicle selection unit, when it is determined that the power supply capacity of the power supply unit exceeds the predetermined facility capacity, from among the vehicles connected to the vehicle charging unit, as the margin time is larger Select at least one car with priority,
The vehicle charge control device according to claim 1, wherein the power control unit controls the vehicle charging unit to cause the selected vehicle to discharge power for charging a vehicle requiring charging different from the selected vehicle. When the vehicle selection unit determines that the power supply capability of the power supply unit exceeds the predetermined facility capacity, the power supply capability of the power supply unit can be obtained by charging power from one vehicle to another vehicle. The vehicle according to claim 2, wherein the vehicle having a larger margin time is preferentially selected as the one vehicle from among the vehicles connected to the vehicle charging unit until the predetermined facility capacity is not exceeded. Automobile charging control device. The facility capacity excess determination unit subtracts the amount of power necessary for charging when it is assumed that all the plurality of vehicles requiring charging are charged simultaneously from the amount of power that can be supplied to the vehicle from the power supply unit. When the calculated value is less than a predetermined lower limit value, it is determined that the power supply capacity of the power supply unit exceeds the predetermined facility capacity, and the subtracted value is equal to or greater than the predetermined lower limit value. The vehicle charge control device according to claim 2 or 3, wherein the power supply unit determines that the power supply capability of the power supply unit does not exceed the predetermined facility capacity. The vehicle power control device according to any one of claims 2 to 4, wherein the power control unit further controls the vehicle charging unit so that the selected vehicle is charged from the power supply unit. further,
A charging request receiving unit that receives the charging request including a charging request amount and a scheduled staying time in the parking facility from a car requiring charging,
The allowance time is the time required to charge the required amount of power for the charge request, the discharge time of the power for charging the chargeable car, and the chargeable car from the expected stay time. The automobile charging control device according to claim 5, wherein the charging time is a time obtained by subtracting a charging time from the power supply unit of the same amount of power that has been discharged. If it is determined that the facility capacity of the vehicle charging unit exceeds the predetermined facility capacity, the vehicle selection unit suppresses charging to a certain vehicle, and the facility capacity of the vehicle charging unit becomes the predetermined facility capacity. The vehicle charge control device according to claim 1, wherein, as the certain vehicle, the vehicle having the larger margin time is preferentially selected as the certain vehicle until the vehicle is not exceeded. When it is assumed that the facility capacity excess determination unit has simultaneously charged all the plurality of vehicles requiring charging, when the total value of power flowing through the vehicle charging unit is larger than a predetermined upper limit value, When it is determined that the equipment capacity of the automobile charging unit exceeds the predetermined equipment capacity, and the total value is equal to or less than the predetermined upper limit value, the equipment capacity of the automobile charging part does not exceed the predetermined equipment capacity. The vehicle charge control device according to claim 1 or 7. The said electric power control part controls the said motor vehicle charging part so that the charge to the said selected motor vehicle may be temporarily suspended as suppression of the charge to the said selected motor vehicle. The vehicle charge control device described in 1. further,
A charging request receiving unit that receives the charging request including a charging request amount and a scheduled staying time in the parking facility from a car requiring charging,
The said allowance time is the time which subtracted the time required to charge the electric power of the charge request amount of the said charge request, and the temporary suspension time of charge from the said stay time. Automobile charging control device. The vehicle selection unit selects the selected vehicle again when the charge request is changed by a visit of the vehicle to the parking facility, an exit of the vehicle from the parking facility, or completion of charging of the vehicle. Item 11. The vehicle charge control device according to any one of Items 1 to 10. further,
The vehicle charge control device according to any one of claims 1 to 11, further comprising a charge management unit that transmits information indicating preferential treatment for a predetermined transaction to the selected vehicle in which charging is suppressed. A vehicle charging control method for controlling a vehicle charging unit capable of simultaneously charging a plurality of vehicles with power supplied from a power supply unit,
When it is assumed that the vehicle stays in a parking facility provided with the vehicle charging unit and satisfies all charging requests of a plurality of charging vehicles that are charging target vehicles connected to the vehicle charging unit while staying in the parking facility. Determining whether or not the equipment capacity of the vehicle charging unit exceeds a predetermined equipment capacity;
When it is determined that the equipment capacity of the car charging unit exceeds the predetermined equipment capacity, from among the cars connected to the car charging part until the vehicle exits from the parking facility after charging is completed. A step of selecting at least one car in preference to a larger margin time that is a scheduled time;
Controlling the vehicle charging unit so that charging to the selected vehicle, which is the vehicle selected in the selecting step, is suppressed.   A program for causing a computer to execute the automobile charging control method according to claim 13.

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