JP5541221B2 - Charging reservation device for power storage charging system - Google Patents

Description

  The present invention relates to a charge reservation device for a power storage charging system.

  Patent Document 1 discloses a power storage charging system including a power storage device as a charging system for charging an electric vehicle or a plug-in hybrid vehicle. The power storage device is charged by power from the outside (for example, a system power network), and the charged power is discharged and supplied to the vehicle. In such a storage-type charging system, how much the vehicle can be charged differs depending on the amount of power (storage amount) stored in the storage device.

JP 2006-20438 A

  The inventor considers a charge reservation in such a power storage charging system, and may not be able to receive a charge of a desired amount of electric power simply by specifying a charge start time within a reserved time zone. Focused on that. This is because even if the charging start time is specified within a certain free time zone, the amount of power stored in the power storage device may not be sufficient to discharge the desired amount of power at that time due to other reservations. Because it is.

  An object of the present invention is to provide a charge reservation device that reflects the amount of power stored in a power storage device in a power storage charging system including the power storage device.

  In order to achieve the above object, the invention according to claim 1 is a power storage device (11) that is charged by external power and that discharges the charged power and supplies the vehicle to the vehicle, and the power storage device (11). Is a charge reservation device for a storage-type charging system (1), and a communication unit (14) for communicating with a vehicle. ), A charge reservation memory (16) for storing reservation contents for charging the vehicle from the power storage device (11), and a predicted supplementary power amount calculation unit for predicting a supplementary power amount to the power storage device (11) from the outside (17a) and the reservation contents for charging from the power storage device (11) to the reserved vehicle (2) based on the information received from the reserved vehicle (2) via the communication unit (14) 16) a charge reservation unit (17b) to be recorded, The charge reservation unit (17b) receives the inquiry signal (110) from the reserved vehicle (2) via the communication unit (14), and the power storage device (13) measured by the power storage amount measurement unit (13) is provided. 11) the current power storage amount, the reservation contents recorded in the charge reservation memory (16), and the prediction of the replenishment power amount of the power storage device (11) by the predicted replenishment power amount calculation unit (17a). Based on the predicted transition of the storage amount of the power storage device (11), the transition of the possible charge amount that can be charged in the reserved vehicle (2) is calculated according to the predicted transition, and the transition of the calculated possible charge amount A response signal (120) including information is transmitted to the reserved vehicle (2) via the communication unit (14), and from the reserved vehicle (2) that has received the response signal (120), a charging start request time ( Charging required including T2) When the signal (140) is received via the communication unit (14), the charge start request time (T2) in the received charge request signal (140) is set as the charge start scheduled time, and the charge start scheduled time and the The charging reservation device according to claim 1, wherein a scheduled charging amount corresponding to a scheduled charging start time is recorded in the charging reservation memory (16) as reservation contents of the charging vehicle (2).

  Thus, when the charge reservation unit (17b) receives the inquiry signal (110) from the reserved vehicle (2), the current storage amount, the reservation content recorded in the charge reservation memory (16), and the storage device Based on the prediction of the supplementary power amount in (11), the transition of the storage amount of the power storage device (11) is predicted, and the transition of the possible charge amount that can be charged in the reserved vehicle (2) is determined according to the predicted transition. A charge start request time (T2) is calculated from the reserved vehicle (2) that has been calculated and transmitted to the reserved vehicle (2) including information on the transition of the calculated possible charge amount and received the response signal (120). ) Including the charging request signal (140) including the charging start request time (T2) in the received charging request signal (140) as the scheduled charging start time, and corresponding to the scheduled charging start time and the scheduled charging start time. Do A constant amount of charge, as the reservation content of the charge the vehicle (2), by recording the charge reservation memory (16), reserved the charged amount of transition of the electric storage device (11) is reflected is realized.

  Further, the invention according to claim 2 is the charge reservation device according to claim 1, wherein the charge reservation unit (17b) requests charge from the reserved vehicle (2) that has received the response signal (120). When the charge request signal (140) including the amount (Q2) and the charge start request time (T2) is received via the communication unit (14), the requested charge amount in the received charge request signal (140) (Q2) and the charge start request time (T2) are set as the scheduled charge amount and the scheduled charge start time, and the scheduled charge amount and the scheduled charge start time are set as the reservation contents of the charging vehicle (2). 16).

  Further, the invention according to claim 3 is the charge reservation apparatus according to claim 1 or 2, wherein the charge reservation unit (17b) receives an inquiry charge amount (Q1) and a charge start inquiry from the reserved vehicle (2). When the inquiry signal (110) including the time (T1) is received via the communication unit (14), the power storage device (11) changes the inquiry charge amount (Q1) from the charging start inquiry time (T1). When a plurality of charging start candidate times within a period up to the arrival time are set, and for each of the plurality of charging start candidate times, power supply to the reserved vehicle (2) is started at the charging start candidate time The possible charge amount that can be charged in the reserved vehicle (2) is calculated, and the calculated possible charge amount at each charge start candidate time is used as the change signal of the possible charge amount as the response signal. Characterized in that included in 120).

  By transmitting such information to the reservation vehicle (2), the reservation vehicle (2) side compares the received energy with the amount of power to be charged and the time at which charging is to be started, so that an optimal charging schedule can be obtained. Can be considered.

  According to a fourth aspect of the present invention, in the charge reservation device according to any one of the first to third aspects, the power storage type charging system (1) is disposed around the power storage type charging system (1). A display unit (15) for displaying information to a person who is present, wherein the charge reservation unit (17b) includes a current storage amount of the storage device (11) measured by the storage amount measurement unit (13), Based on the charge reservation recorded in the charge reservation memory (16) and the prediction of the supplementary power amount by the predicted supplementary power amount calculation unit (17a), the next reserved charge at the scheduled charge start time A value obtained as a result of subtracting a scheduled charge amount of the next reserved charge from a charge amount of the power storage device (11) is displayed on the display unit (15) as a current possible charge amount. To do. In this way, it is possible to notify how much the battery can be charged even for a vehicle that has entered without reservation.

  In addition, the code | symbol in the bracket | parenthesis in the said and the claim shows the correspondence of the term described in the claim, and the concrete thing etc. which illustrate the said term described in embodiment mentioned later. .

It is a figure which shows the outline | summary of embodiment of this invention. 1 is a configuration diagram of a power storage charging system 1. FIG. 1 is a configuration diagram of an in-vehicle system 20. It is a figure which shows the exchange of the signal between a vehicle side and an electrical storage type charging system. It is a flowchart of the process which a charge reservation part performs. It is a figure which shows an example of the reservation table recorded on a charge reservation memory. It is a graph which illustrates transition of the electrical storage amount of an electrical storage apparatus. It is a figure which shows the possible charge amount at the time of 11:30. It is a figure which shows the possible charge amount at the time of 10:30. It is a figure which shows an example of the possible charge amount transition table transmitted to a vehicle. It is a flowchart of the process which the charge control part of a vehicle-mounted system performs. 4 is a diagram illustrating an example of information display in a vehicle 2. FIG. It is a figure which shows the reservation table after a record addition. It is a flowchart of the process for the display in an electrical storage type charging system. It is a figure which shows the outline | summary of the calculation method of possible charge amount. It is a figure which shows the example of a display in the display part of an electrical storage type charging system.

  Hereinafter, an embodiment of the present invention will be described. FIG. 1 shows a storage-type charging system 1 according to the present embodiment, a vehicle 2 (electric vehicle, plug-in hybrid vehicle, etc.) charged by the storage-type charging system 1, and an in-vehicle system 20 mounted on the vehicle 2. .

  The vehicle 2 is a vehicle that uses a motor as a driving power generation device and has a battery (hereinafter referred to as a vehicle driving battery) as a power source of the motor. The battery receives power supply from the outside of the vehicle 2. Charging is possible. Examples of such a vehicle 2 include an electric vehicle and a plug-in hybrid vehicle.

  In the present embodiment, the battery of the vehicle 2 is charged by receiving power supply from the power storage charging system 1. The in-vehicle system 20 mounted on the vehicle 2 makes a reservation for charging in advance by communicating with the power storage charging system 1 at a location far from the in-vehicle system 20. The communication path between the storage-type charging system 1 and the in-vehicle system 20 may be only a wireless communication path, or may be both a wireless communication path and a wired communication path (for example, the Internet).

  In FIG. 2, the structure of the electrical storage type charging system 1 is shown. The power storage charging system 1 includes a power storage device 11, a charge control unit 12, a power storage amount measurement unit 13, a communication unit 14, a display unit 15, a charge reservation memory 16, and a control circuit 17. The communication unit 14, the charge reservation memory 16, and the control circuit 17 constitute a charge reservation device of the electricity storage type charging system 1.

  The power storage device 11 is a battery that is charged with power from the outside (specifically, the grid power network) and discharges the charged power to supply the vehicle. When the amount of electricity stored in power storage device 11 is zero, power storage type charging system 1 cannot charge the vehicle.

  The charge control unit 12 is a circuit that performs charging and discharging (charging from the power storage device 11 to the vehicle) from the system power network to the power storage device 11. Specifically, the charging control unit 12 charges the power storage device 11 by supplying the power received from the grid power network to the power storage device 11, and the vehicle from the power storage device 11 according to the control from the control circuit 17. To supply power.

  The power storage amount measurement unit 13 is a device that measures the amount of power stored in the power storage device 11 (that is, the amount of power storage). The communication unit 14 is a communication interface for communicating with the in-vehicle system 20 mounted on the vehicle 2. The display unit 15 is a device that displays information with characters, images, and the like to people around the power storage charging system 1. The charging reservation memory 16 is a storage medium that stores reservation contents for charging the vehicle from the power storage device 11.

  The control circuit 17 includes a predicted supplementary power amount calculation unit 17a, a charge reservation unit 17b, and a display control unit 17c. About each of these parts 17a-17c, the control circuit 17 may each implement | achieve the function of each part 17a-17c by executing a program, and the control circuit 17 has each function of each part 17a-17c. A dedicated circuit for execution may be included.

  The predicted supplementary power amount calculation unit 17a predicts the amount of power (that is, supplementary power amount) charged from the grid power network to the power storage device 11. Specifically, any method may be used as a method for predicting the supplementary electric energy.

  For example, by referring to an external power table in which the power received from the grid power network is recorded for each date and time, the power received from the grid power network at the time after the present is specified, and the current power storage amount of the power storage device 11 and the grid power network The supplementary power amount table that can calculate the amount of increase in the amount of stored electricity per unit time is prepared using the power received from By inputting the received power and the power storage amount of the power storage device 11 after the current time sequentially, the replenishment power amount of the power storage device 11 after the current time may be calculated stepwise in a time series. .

  For the external power table and the supplementary power amount table, those stored in a storage medium (not shown) are used. The supplementary power amount calculation unit 17a sequentially creates the supplementary power amount table 17a based on the transition of the power storage amount received in the past from the power storage amount measurement unit 13 and the external power table. Or what was created previously at the time of manufacture of the electrical storage type charging system 1 may be used.

  Based on the information received from the reserved vehicle 2 via the communication unit 14, the charging reservation unit 17 b records the reservation content for charging from the power storage device 11 to the vehicle 2 in the reservation memory 16. The display control unit 17c causes the display unit 15 to display information related to charging according to the control of the charging reservation unit 17b. Details of the operation of the charge reservation unit 17b and the display control unit 17c will be described later.

  Next, the configuration of the in-vehicle system 20 will be described. As shown in FIG. 3, the in-vehicle system 20 includes an operation display unit 21, a communication unit 22, and a charge control unit 23. The operation display unit 21 has an input device that accepts a user's operation such as a mechanical switch and a touch panel, and also has a display device that displays information on the driver in the vehicle 2 using characters, images, and the like.

  The communication means 22 is a communication interface (wireless communication device) for communicating with the power storage charging system 1. Based on the user input received by the operation display unit 21, the charging control unit 23 communicates with the power storage charging system 1 using the communication unit 22 and registers the charging reservation schedule for the vehicle 2 in the power storage charging system 1. For example, it can be realized as a microcomputer.

  Hereinafter, the operation of the charge reservation in the power storage type charging system 1 and the vehicle 2 (corresponding to the reserved vehicle) having such a configuration will be described. First, in FIG. 4, signal exchange between the in-vehicle system 20 on the vehicle 2 side and the power storage charging system 1 is shown in time series, and the reservation operation will be described with reference to this figure.

  First, the driver of the vehicle 2 performs an operation to make a charge reservation on the operation display unit 21, and further uses the operation display unit 21 to specify the storage-type charging system 1 to be charged and to make an inquiry A charge amount Q1 and a charge start inquiry time T1 are input.

  Here, the inquiry charge amount Q1 is a charge amount that the driver wants to charge the battery for driving the vehicle, and the charge start inquiry time T1 is charged when the vehicle 2 arrives at the installation location of the power storage charging system 1 It is the time when the driver thinks that he can start.

  When the operation display unit 21 accepts such an input, the charge control unit 23 generates an inquiry signal 110 including the received inquiry charge amount Q1 and the charge start inquiry time T1, and further, the driver of the vehicle 2 is added to the inquiry signal 110. The user ID (in this example, the user ID is D) is added, and the inquiry signal 110 is transmitted to the specified power storage charging system 1 using the communication means 22. In this example, it is assumed that the current time is 9:00, the input inquiry charge amount Q1 is 80 kWh, and the input charge start inquiry time T1 is 13:00.

  In the in-vehicle system 20, the charging reservation unit 17 b receives this inquiry signal 110 via the communication unit 14. The charging reservation unit 17b repeatedly executes the process as shown in FIG. 5. In step 210, the charging reservation unit 17b waits for reception of the inquiry signal, and proceeds to step 220 upon receiving the inquiry signal 110.

In step 220, the current power storage amount of the power storage device 11 measured by the power storage amount measurement unit 13, and
Based on the reservation contents recorded in the charge reservation memory 16 and the prediction of the supplementary power amount of the power storage device 11 by the predicted supplementary power amount calculation unit 17a, the transition of the storage amount of the power storage device 11 is predicted.

  FIG. 6 shows the reservation contents recorded in the charge reservation memory 16 in this example. This reservation content is configured as a reservation table having a plurality of records, and each record represents the content of one charge reservation. One set of user ID, scheduled charge start time, planned charge amount, and charge Includes the scheduled end time. For example, the charging reservation with the user ID A starts charging at 9:00, charges 40 kWh, and then ends charging at 9:40. It should be noted that reservations with user IDs A, B, and C recorded in these reservation tables may be reserved in the same manner as reservations with user IDs D described below, or other methods It may be reserved at.

  FIG. 7 is a graph showing the transition 30 of the amount of power stored in the power storage device 11 predicted by the charge reservation unit 17b in this example. In this example, the predicted supplementary power amount calculation unit 17a increases the supplementary power amount from the grid power network for the power storage device 11 at a constant rate with time based on the external power table and the supplementary power amount table (that is, Suppose that the replenishment power amount per unit time is constant). Further, it is assumed that the power storage amount of the power storage device 11 measured by the power storage amount measurement unit 13 at 9:00, which is the current time, is about 40 kWh as shown in FIG.

  In this case, the charging reservation unit 17b is based on the reservation table in the charging reservation memory 16 and has reservations from 9:00 to 9:40, 10:00 to 10:30, and 11:00 to 11:30. In these time zones, it is predicted that the amount of power storage will decrease by charging the vehicle by 40 kWh, 10 kWh, and 20 kWh in each time zone (for example, at a constant ratio within each time zone). Then, by subtracting the transition of the decrease amount from the transition of the supplementary power amount calculated by the predicted supplementary power amount calculation unit 17a, the prediction of the transition 30 of the storage amount of the power storage device 11 is obtained.

  Next, in step 230, the charge reservation unit 17 b calculates the transition of the possible charge amount that can be charged in the vehicle 2 according to the predicted transition based on the predicted transition 30 of the storage amount as described above, and can calculate A possible charge amount transition table is created as data representing the transition of the charge amount.

  The period for calculating the transition of the possible charge amount is a period after the charging start inquiry time T1 (specifically, 13:00) received from the in-vehicle system 20. During this period, since the reservation is not yet registered in the reservation table, the transition 30 of the power storage amount of the power storage device 11 itself is the transition of the possible charge amount.

  Note that if the reservation for the period after the charging start inquiry time T1 received from the in-vehicle system 20 is included in the reservation table, the transition of the storage amount of the power storage device 11 during the period before the scheduled charging start time of the reservation. A value obtained by subtracting the scheduled charge amount of the reservation from 30 is set as a possible charge amount. For example, if the possible charge amount at time 11:30 is calculated, as shown in FIG. 8, 20 kWh, which is the scheduled charge amount for C reservation, is subtracted from the charge amount of the power storage device 11 at 11:30. The result is the possible charge amount at time 11:30. Also, if the possible charge amount at 10:30 is calculated, as shown in FIG. 9, the charge amount of the power storage device 11 at 10:30 is more than 20 kWh, which is the scheduled charge amount for C reservation. Since it is low, the possible charge amount becomes zero.

  Then, the charging reservation unit 17b creates a possible charge amount transition table based on the transition of the possible charge amount calculated in this way. The possible charge amount transition table created in this example is as shown in FIG.

  A specific method for creating the possible charge amount transition table is as follows. First, a plurality of charge start candidates within a period after the charge start inquiry time T1 (specifically 13:00) and until the time (specifically 14:00) when the power storage device 11 reaches the inquiry charge amount Q1. Time (specifically, 13:00, 13:30, 14:00) is set. Then, for each of the plurality of set charging start candidate times, a possible charge amount that can be charged in the vehicle 2 when the power supply to the vehicle 2 is started at the charging start candidate time is calculated. This is the value of the charge start candidate time in the transition of the possible charge amount calculated as described above. A list of possible charge amounts for each calculated charge start candidate time is used as a possible charge amount transition table.

  Subsequently, in step 240, the communication unit 14 is used to transmit the response signal 120 (see FIG. 4) including the created possible charge amount transition table to the in-vehicle system 20 that is the transmission source of the inquiry signal 201. Subsequently, in step 250, the process waits until a request signal is received from the in-vehicle system 20.

  FIG. 11 shows a flowchart of processing executed by the charging control unit 23 in order to process the response signal 120. In step 310, the charging control unit 23 waits for reception of a response signal. When the response signal 120 is received from the power storage charging system 1 via the communication unit 22, the charging control unit 23 proceeds to step 320 and uses the operation display unit 21 to respond. Information display based on the possible charge amount transition table included in the signal is performed, and in step 330, selection of a charge start candidate time and a charge amount by the driver of the vehicle 2 is accepted.

  FIG. 12 shows an example of an image displayed on the display device of the operation display unit 21 by information display based on the possible charge amount transition table. In this image, the charge start candidate time and the possible charge amount in the possible charge amount transition table are displayed along the time series from left to right, and a bar graph of the possible charge amount is displayed. Furthermore, by displaying the switches 31 to 33 corresponding to each charging start candidate time, the driver of the vehicle 2 is prompted to select the charging start candidate time.

  The driver of the vehicle 2 who sees this display stores the charge at the stage of charging 60 kWh before charging the inquiry charge amount Q1 (80 kWh) even if the driver starts charging at the charge start inquiry time T1 (13:00) he desires. Although the device 11 becomes empty, if it waits until 14:00 and starts charging, it will be understood that charging that satisfies the inquiry charge amount Q1 (80 kWh) is possible, and then 13:00, It is determined at which time of 13:30 or 14:00 a charge start is reserved. In this example, 14:00 is selected by operating the operation display unit 21 and selecting the switch 33.

  Then, the charging control unit 23 accepts the selection via the operation display unit 21 (see process 130 in FIG. 4), proceeds to step 340, and selects the selected charging start candidate time (14:00) and the charging start candidate time. The charge request signal 140 including the charge start request time T2 and the required charge amount Q2 using the communication means 22 is set as the charge start request time T2 and the required charge amount Q2, respectively. And the driver's user ID (D) is included in the charge request signal and transmitted to the power storage charging system 1.

  The charge reservation unit 17b that has received the charge request signal 140 via the communication unit 14 registers a reservation in the charge reservation memory 16 based on the received charge request signal 140 (see processing 150 in FIG. 4). Specifically, when the charge request signal 140 is received in step 250 of FIG. 5, the process proceeds to step 260, where the reservation is made based on the user ID, the required charge amount Q2 and the charge start request time T2 included in the charge request signal 140. Add a new record to the table. FIG. 13 shows the reservation table after the new record is added.

  As shown in this figure, in the newly added record, the user ID is D, the scheduled charging start time is the same as the charging start request time T2, and the scheduled charging amount is the same as the requested charging amount Q2. Further, the estimated charge end time of this record is calculated based on the charge start request time T2 and the required charge amount Q2 such that the larger the required charge amount Q2, the longer the period from the charge start request time T2 to the scheduled charge end time. Use the value obtained.

  Subsequently, in step 270, a reservation completion confirmation signal 160 (see FIG. 4) is transmitted to the in-vehicle system 20 using the communication unit 14. The charging control unit 23 that has received the reservation completion confirmation signal 160 via the communication unit 22 causes the display device of the operation display unit 21 to display information indicating the completion of the reservation.

  As described above, when the charge reservation unit 17b receives the inquiry signal 110 including the inquiry charge amount Q1 and the charge start inquiry time T1 from the vehicle 2 (corresponding to the reservation vehicle), the current charge amount and the charge reservation memory 16 are stored. Based on the recorded reservation content and the prediction of the supplementary power amount of the power storage device 11, the transition of the stored power amount of the power storage device 11 is predicted, and the transition of the possible charge amount that can be charged in the vehicle 2 according to the predicted transition A charge request including the requested charge amount Q2 and the charge start request time T2 from the vehicle 2 that has transmitted the response signal 120 including information on the transition of the calculated possible charge amount to the reserved vehicle 2 and received the response signal 120. When the signal 140 is received, the requested charge amount Q2 and the charge start request time T2 in the received charge request signal 140 are set as the scheduled charge amount and the charge start scheduled time. By recording the charge reservation memory 16, reserved the charged amount of transition of the power storage device 11 is reflected is realized.

  In addition, the charge reservation unit 17b sets a plurality of charge start candidate times within a period from the charge start inquiry time T1 to the time when the power storage device 11 reaches the inquiry charge amount Q1, and each of the plurality of charge start candidate times is set. When the power supply to the vehicle 2 is started at the charge start candidate time, the possible charge amount that can be charged in the vehicle 2 is calculated, and the calculated possible charge amount at each charge start candidate time is expressed as a transition of the possible charge amount. This information is included in the response signal 120. By transmitting such information to the vehicle 2, on the reserved vehicle (2) side, an optimal charging schedule should be examined by comparing the received amount of power and the time at which charging is desired with the received information. Can do.

  In addition, after making a reservation for charging of the vehicle 2 from the storage-type charging system 1 as described above, the vehicle 2 is connected to the storage-type charging system 1 at the scheduled charging start time (14:00) according to the reservation. When D, which is a user ID, is input to the operation unit (not shown) of the charging system 1, the charging reservation unit 17b reads a record including the input user ID from the reservation table of the charging reservation memory 16, and If the current time is between a predetermined charging start time and a predetermined period (for example, a period until 10 minutes later, a period until the charging end scheduled time), a charge start command is output to the charge control unit 12. Receiving this charge start command, the charge control unit 12 starts charging the battery for driving the vehicle 2 from the power storage device 11. Then, the charge reservation unit 17b outputs a charge end command to the charge control unit 12 when the charge start / end time of the read record comes. Upon receiving this charge termination command, the charge control unit 12 ends the charging of the vehicle driving battery of the vehicle 2 from the power storage device 11.

  Next, the display operation in the display unit 15 of the storage battery charging system 1 will be described. The power storage charging system 1 can charge not only reserved charging but also a dive vehicle without reservation. However, the amount of power that can be charged in the battery of such a dive vehicle is limited to a range of power that does not interfere with reserved charging.

  For this reason, the charge reservation part 17b of the electrical storage type charging system 1 controls the display control part 17c to display information such as the amount of power that can be charged by the dive vehicle on the display part 15. For such control, the charging reservation unit 17b performs the process shown in FIG. Note that the charging reservation unit 17b may be configured to repeatedly execute the process shown in FIG. 14 while the power storage type charging system 1 is operating, or to the operation unit (not shown) of the power storage type charging system 1. On the other hand, the processing of FIG. 14 may be executed only when a person performs a predetermined operation.

  Here, the case where the charge reservation unit 17b executes the process of FIG. 14 at the stage where the reservation table of the charge reservation memory 16 is as shown in FIG. 10 at the stage of 11:00 will be described. First, in step 410, the storage amount (here, 25 kWh) of the storage device 11 at the current time (11:00) is acquired from the storage amount measurement unit 13.

  Subsequently, at step 420, the reservation table of the charge reservation memory 16 is referred to, and the charge start scheduled time (11:30 in the present example is a reservation with a user ID of C) that is the scheduled charge start time after the current time. ) And the planned charge amount (20 kWh).

  Subsequently, in step 430, the predicted supplementary power amount (here, 15 kWh) predicted to be charged from the grid power network to the power storage device 11 by the scheduled charging start time (11:30) read from the current time (11:00). Is obtained from the predicted supplementary electric energy calculation unit 17a.

  Subsequently, in step 440, based on the current power storage amount (25 kWh) acquired in step 410, the planned charge amount (20 kWh) read in step 420, and the acquired predicted supplementary power amount (15 kWh), as shown in FIG. Thus, the possible charge amount (25 kWh + 15 kWh−20 kWh = 20 kWh) at the current time is calculated.

  Subsequently, in step 450, a command to display the possible charge amount calculated in step 440 is output to the display control unit 17c. Specifically, as shown in FIG. 16, the current time (11:00), the storage amount of the power storage device 11 at the current time (25 kWh), the scheduled charge amount of the next charge reservation (20 kWh), and the next charge reservation A command for displaying information including the predicted supplementary power amount (15 kWh) until the scheduled charging start time (11:30) and the possible charge amount (20 kWh) is output to the display control unit 17c. Then, the display control unit 17c causes the display unit 15 to display an image as shown in FIG. 16 according to the command received from the display control unit 17c.

  As described above, the charge reservation unit 17b includes the current power storage amount of the power storage device 11 measured by the power storage amount measurement unit 13, the charge reservation content recorded in the charge reservation memory 16, and the predicted supplementary power amount calculation unit 17a. Based on the prediction of the replenishment power amount by, the next reserved scheduled charge amount (15 kWh) is subtracted from the charged amount (25 kWh + 15 kWh) of the power storage device 11 at the scheduled charge start time of the next reserved charge. The result value (20 kWh) is displayed on the display unit 15 as the current possible charge amount.

  In this way, it is possible to notify how much the battery can be charged even for a vehicle that has entered without reservation. Therefore, after seeing this display, the dive driver knows that 20 kWh can be charged before the next reserved charge starts, and now connects the vehicle to the power storage charging system 1 for charging. It can be determined whether or not the vehicle driving battery is charged.

(Other embodiments)
As mentioned above, although embodiment of this invention was described, the scope of the present invention is not limited only to the said embodiment, The various form which can implement | achieve the function of each invention specific matter of this invention is included. It is.

  For example, in the above-described embodiment, the charging reservation device (communication unit 14, charging reservation memory 16, control circuit 17) is realized as a part of the storage-type charging system 1, but the reservation is separated from the storage-type charging system 1. It can also be realized as a server. In that case, the charge reservation device exchanges signals with the charge control unit 12, the display unit 15, and the charge reservation memory 16 via the communication path.

DESCRIPTION OF SYMBOLS 1 Power storage type charging system 2 Vehicle 11 Power storage device 12 Charge control unit 13 Power storage amount measurement unit 14 Communication unit 15 Display unit 16 Charge reservation memory 17 Control circuit 17a Predicted supplementary power amount calculation unit 17b Charge reservation unit 17c Display control unit 20 In-vehicle system 21 Operation display part 22 Communication means 23 Charge control part 30 Transition of storage amount

Claims (4)

A power storage device (11) that is charged by external power and that discharges the charged power and supplies the vehicle to the vehicle, and a power storage amount measurement unit (13) that measures the amount of power stored in the power storage device (11). ), A charge reservation device for a storage-type charging system (1),
A communication unit (14) for communicating with the vehicle;
A charge reservation memory (16) for storing reservation contents for charging the vehicle from the power storage device (11);
A predicted supplementary power amount calculation unit (17a) for predicting a supplementary power amount to the power storage device (11) from the outside;
Based on the information received from the reserved vehicle (2) via the communication unit (14), the reservation content for charging from the power storage device (11) to the reserved vehicle (2) is recorded in the reserved memory (16). A charge reservation unit (17b),
When the charge reservation unit (17b) receives the inquiry signal (110) from the reserved vehicle (2) via the communication unit (14), the power storage device (11) measured by the power storage amount measurement unit (13) Based on the current power storage amount, the reservation contents recorded in the charge reservation memory (16), and the prediction of the supplementary power amount of the power storage device (11) by the predicted supplementary power amount calculation unit (17a). , Predicting the transition of the storage amount of the power storage device (11), calculating the transition of the possible charge amount that can be charged in the reserved vehicle (2) according to the predicted transition, and providing information on the transition of the calculated possible charge amount A response start signal (120) including the response signal (120) is transmitted to the reserved vehicle (2) through the communication unit (14) and the response signal (120) is received from the reserved vehicle (2). Charge request signal (including 40) via the communication unit (14), the charge start request time (T2) in the received charge request signal (140) is set as the charge start scheduled time, and the charge start scheduled time and the charge start A charging reservation apparatus, wherein a scheduled charging amount corresponding to a scheduled time is recorded in the charging reservation memory (16) as reservation contents of the charging vehicle (2).   The charge reservation unit (17b) receives the charge request signal (140) including the required charge amount (Q2) and the charge start request time (T2) from the reserved vehicle (2) that has received the response signal (120). Is received via the communication unit (14), the requested charge amount (Q2) and the charge start request time (T2) in the received charge request signal (140) are set as the planned charge amount and the charge start scheduled time. The charging reservation device according to claim 1, wherein the scheduled charging amount and the scheduled charging start time are recorded in the charging reservation memory (16) as reservation contents of the charging vehicle (2).   The charge reservation unit (17b) receives the inquiry signal (110) including the inquiry charge amount (Q1) and the charge start inquiry time (T1) from the reservation vehicle (2) via the communication unit (14). A plurality of charge start candidate times within a period from the charge start inquiry time (T1) to the time when the power storage device (11) reaches the inquiry charge amount (Q1) are set, and the plurality of charge start candidates For each time, when the power supply to the reserved vehicle (2) is started at the charging start candidate time, a possible charge amount that can be charged in the reserved vehicle (2) is calculated, and for each calculated charging start candidate time The charge reservation apparatus according to claim 1 or 2, wherein the possible charge amount is included in the response signal (120) as information on a transition of the possible charge amount. The storage-type charging system (1) further includes a display unit (15) for displaying information to people around the storage-type charging system (1),
The charge reservation unit (17b) includes a current charge amount of the power storage device (11) measured by the charge amount measurement unit (13), and charge reservation contents recorded in the charge reservation memory (16). Based on the prediction of the supplementary power amount by the predicted supplementary power amount calculation unit (17a), the next reserved amount is calculated from the stored amount of the power storage device (11) at the scheduled charge start time of the next reserved charge. The charge reservation according to any one of claims 1 to 3, wherein a value obtained as a result of subtracting the estimated charge amount of the charged charge is displayed on the display unit (15) as a current possible charge amount. apparatus.

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