Charging / discharging control system

Abstract

To provide a charging / discharging control system capable of improving the accuracy of charging / discharging planning.SOLUTION: In a charging / discharging control system of the present invention, a server controls the charging / discharging of individual vehicles by a charger that charges an unspecified number of vehicles based on a charging / discharging plan, acquires information of a vehicle that is connected to a charger and is waiting to be charged when a charging / discharging plan is reviewed after a vehicle is newly connected to the charger, determines the connection continuation and the connection release of the vehicle waiting to be charged from the charger by comparing the acquired information of the vehicle waiting to be charged with the previous vehicle information, and reflects on the review of the charging / discharging plan.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a charge / discharge control system. [Background technology]

[0002] Patent Document 1 discloses a technology for controlling a charger connector connected to a vehicle participating in supply and demand adjustment of a power grid by locking the connector so that the connector is not disconnected from the vehicle before charging or discharging begins. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-043801 Summary of the Invention [Problem to be solved by the invention]

[0004] If charging does not begin immediately after the charger connector is connected to the vehicle, communication between the charger and the vehicle will be cut off, making it impossible to identify the connected vehicle, and there is a risk that it will not be possible to ensure the planning and execution of a charging / discharging plan that is based on charging / discharging instructions for individual vehicles.

[0005] The present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to provide a charge / discharge control system capable of improving the accuracy of a charge / discharge plan. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the charge / discharge control system of the present invention is a charger that charges an unspecified number of vehicles, and a server controls the charging and discharging of each individual vehicle based on a charge / discharge plan, and when a new vehicle is connected to the charger and the charge / discharge plan is reviewed, the server acquires information about the vehicle waiting to be charged that is connected to the charger, and compares the acquired information about the vehicle waiting to be charged with the previous vehicle information to determine whether to continue connecting or disconnecting the vehicle waiting to be charged to the charger, and reflects this in the review of the charge / discharge plan. Effect of the Invention

[0007] The charge / discharge control system according to the present invention has an effect of improving the accuracy of the charge / discharge plan. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a charge / discharge control system according to an embodiment. [Diagram 2] FIG. 2 is a flowchart showing an example of review control of a charge / discharge plan in the charge / discharge control system according to the embodiment. [Diagram 3] FIG. 3 is a flowchart illustrating an example of a process of reviewing a charge / discharge plan. [Figure 4] FIG. 4 is a flowchart showing another example of the process of reviewing the charge and discharge plan. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a charge / discharge control system according to the present invention will be described, however, the present invention is not limited to the embodiment.

[0010] Fig. 1 is a diagram showing a schematic configuration of a charge / discharge control system 100 according to an embodiment. As shown in Fig. 1, the charge / discharge control system 100 according to the embodiment is configured with a charger 1, a vehicle 2, a server 3, and a communication device 4. In the charge / discharge control system 100 according to the embodiment, the charger 1 charges an unspecified number of vehicles 2, and the server 3 controls charging / discharging of each vehicle 2 based on a charge / discharge plan.

[0011] The charger 1 includes a charger main body 10, a charging cable 11, and a charging connector 12. The charger main body 10 is connected to, for example, a power grid (commercial power source). One end of the charging cable 11 is connected to the charger main body 10, and the other end is connected to the charging connector 12. The charging connector 12 can be connected to an inlet 23 of the vehicle 2. When the charging connector 12 is connected to the inlet 23 of the vehicle 2, the charger 1 can supply power from the charger main body 10 to the vehicle 2 side via the charging cable 11 and the charging connector 12. In addition, the charging cable 11 and the charging connector 12 also configure a communication path when communication is performed between the charger 1 (charger main body 10) and the vehicle 2 (ECU 21). In addition, the charger 1 includes a locking mechanism that locks the charging connector 12 connected to the inlet 23 of the vehicle 2. Note that the charger 1 is not limited to a function of charging the battery 22 of the vehicle 2, and may have a function of discharging the power supplied from the battery 22 of the vehicle 2 to the charger 1 side to an electric device, for example.

[0012] The vehicle 2 is an electric vehicle that includes an ECU 21, a battery 22, an inlet 23, etc., and can run by driving a motor using the power of the battery 22. The battery 22 can be charged by power supplied from the charger 1 via the inlet 23, etc.

[0013] The server 3 is a management device that performs charge / discharge management and planning according to the travel schedule of the vehicle 2 and the required charge amount of the battery 22 mounted on the vehicle 2. The server 3 is capable of communicating with the charger 1 and the communication device 4 via wired communication or wireless communication.

[0014] The communication device 4 is, for example, a mobile communication terminal owned by the user of the vehicle 2 or an in-vehicle communication terminal that can be installed in the vehicle 2, which communicates with the server 3 to provide information such as the vehicle 2's travel schedule and the required charge amount of the battery 22.

[0015] In the charge / discharge control system 100 according to the embodiment, when the charging connector 12 of the charger 1 and the inlet 23 of the vehicle 2 are connected, obtainable values ​​such as vehicle information received by the charger 1 from the vehicle 2 are stored in a storage device of the server 3. In addition, in the charge / discharge control system 100 according to the embodiment, a connector lock signal is transmitted from the server 3 to the charger 1, and the server 3 determines whether the connector lock has been successful and whether the vehicle information obtained at the time of reconnection is compared with the previously obtained values ​​to determine whether the same vehicle is still connected to the charger 1.

[0016] In the charge / discharge control system 100 according to the embodiment, when a new vehicle 2 is connected to the charger 1 and the charge / discharge plan needs to be reviewed, it is determined whether or not there is a vehicle that is connected to the charger 1 but is not currently being charged and is waiting to be charged. If there is a vehicle that is waiting to be charged, the connector of the charger 1 to which the vehicle waiting to be charged is locked, and a current supply process is executed to obtain vehicle information. The vehicle information to be obtained includes, for example, the total battery capacity, the charging rate, and the estimated charging completion time in accordance with the CHAdeMO (registered trademark) standard. However, values ​​that change depending on the reconnection timing, such as the charging rate, may be corrected or ignored, and a fixed value may be prioritized.

[0017] FIG. 2 is a flowchart showing an example of review control of a charge / discharge plan in the charge / discharge control system 100 according to the embodiment. The review control of the charge / discharge plan shown in FIG. 2 is performed, for example, by using a control device included in the server 3. First, the server 3 determines whether or not there is a newly connected vehicle that is newly connected to the charger 1 (step S1). If the server 3 determines that there is no newly connected vehicle (No in step S1), it returns a series of controls. On the other hand, if the server 3 determines that there is a newly connected vehicle (Yes in step S1), it stores information about the newly connected vehicle in the storage device of the server 3 (step S2). Next, the server 3 executes a review process of the charge / discharge plan (step S3).

[0018] FIG. 3 is a flowchart showing an example of the review process of the charge / discharge plan. When the server 3 starts the review process of the charge / discharge plan, first, the server 3 acquires information on the newly connected vehicle from the storage device of the server 3 (step S301). Next, the server 3 acquires information on the vehicle being charged / discharged (step S302). Next, the server 3 judges whether or not there is a vehicle waiting to be charged (step S303). When the server 3 judges that there is no vehicle waiting to be charged (No in step S303), the server 3 reflects the absence of a vehicle waiting to be charged in the review of the charge / discharge plan, and corrects the charge / discharge plan (step S310). After that, the server 3 ends the review process of the charge / discharge plan, returns the review control of the charge / discharge plan shown in FIG. 2, and returns to step S1.

[0019] On the other hand, if the server 3 determines that there is a vehicle waiting to be charged (Yes in step S303), it transmits a connector lock signal to the charger 1 connected to the vehicle waiting to be charged (step S304). Next, the server 3 determines whether the connector lock by the charger 1 was successful (step S305). If the server 3 determines that the connector lock was not successful (No in step S305), it determines that the vehicle waiting to be charged is disconnected (step S309). Next, the server 3 reflects the disconnection of the vehicle waiting to be charged in the review of the charge and discharge plan, and corrects the charge and discharge plan (step S310). Thereafter, the server 3 ends the review process of the charge and discharge plan, returns the review control of the charge and discharge plan shown in FIG. 2, and returns to step S1.

[0020] In addition, in step S305, when the server 3 determines that the connector lock has been successful (Yes in step S305), it acquires vehicle information of the vehicle 2 connected to the charger 1 whose connector lock has been successful (step S306). Next, the server 3 judges whether the acquired vehicle information is the same as the previously acquired value (previous vehicle information) (step S307). When the server 3 determines that the acquired vehicle information is the same as the previously acquired value (previous vehicle information) (Yes in step S307), it judges that the connection of the vehicle waiting for charging is to be continued (step S308). Next, the server 3 reflects the continued connection of the vehicle waiting for charging in the review of the charge and discharge plan, and corrects the charge and discharge plan (step S310). Thereafter, the server 3 ends the review process of the charge and discharge plan, returns the review control of the charge and discharge plan shown in FIG. 2, and returns to step S1. On the other hand, in step S307, when the server 3 determines that the acquired vehicle information is different from the previously acquired value (previous vehicle information) (No in step S307), it judges that the connection of the vehicle waiting for charging is to be disconnected (step S309). Next, the server 3 reflects the disconnection of the vehicle waiting for charging in the review of the charge and discharge plan, and corrects the charge and discharge plan (step S310). After that, the server 3 ends the review process of the charge and discharge plan, and returns the review control of the charge and discharge plan shown in FIG. 2 to step S1.

[0021] In the charge / discharge control system 100 according to the embodiment, when a new vehicle 2 is connected to the charger 1 and the charge / discharge plan is reviewed, information on the vehicle waiting to be charged is acquired and compared with the previously acquired value (previous vehicle information) to determine whether to continue or disconnect the vehicle waiting to be charged, and the result is reflected in the review of the charge / discharge plan. As a result, the charge / discharge control system 100 according to the embodiment can improve the accuracy of the charge / discharge plan.

[0022] In addition, in the review process of the charge / discharge plan shown in Fig. 3, the vehicle waiting to be charged may be replaced with a vehicle waiting to be discharged. In this case, in the charge / discharge control system 100 according to the embodiment, when a new vehicle 2 is connected to the charger 1 and the charge / discharge plan is reviewed, information on the vehicle waiting to be discharged is acquired and compared with previous vehicle information (previously acquired value), thereby determining whether to continue or disconnect the vehicle waiting to be discharged, and reflecting the result in reviewing the charge / discharge plan. As a result, the charge / discharge control system 100 according to the embodiment can improve the accuracy of the charge / discharge plan.

[0023] In addition, in the charge / discharge control system 100 according to the embodiment, a connector lock signal may be periodically sent to the charger 1 to which the vehicle is connected while waiting to be charged, and if it is determined that the connector lock has not been successful, it may be determined that the same vehicle is not connected to the charger 1.

[0024] FIG. 4 is a flowchart showing another example of the review process of the charge / discharge plan. First, the server 3 judges whether or not there is a vehicle waiting to be charged (step S311). If the server 3 judges that there is a vehicle waiting to be charged (Yes in step S311), it judges whether or not a predetermined time has passed since the last check time (step S312). If the server 3 judges that the predetermined time has passed since the last check time (Yes in step S312), it transmits a connector lock signal to the charger 1 connected to the vehicle waiting to be charged (step S313). Next, the server 3 judges whether or not the connector lock by the charger 1 has been successful (step S314). If the server 3 judges that the connector lock has been successful (Yes in step S314), it acquires vehicle information of the vehicle 2 connected to the charger 1 whose connector lock has been successful (step S315). Next, the server 3 judges whether or not the acquired vehicle information is the same as the previously acquired value (previous vehicle information) (step S316). When the server 3 determines that the acquired vehicle information is the same as the previously acquired value (previous vehicle information) (Yes in step S316), it determines that the connection of the vehicle waiting for charging should continue (step S317). After that, the server 3 returns a series of controls without modifying the charge / discharge plan.

[0025] Furthermore, if it is determined in step S314 that the connector lock has not been successful (No in step S314), and if it is determined that the vehicle information acquired in step S316 differs from the previously acquired value (previous vehicle information) (No in step S316), the server 3 determines that the vehicle waiting to be charged is to be disconnected (step S318). Next, the server 3 reflects the disconnection of the vehicle waiting to be charged in reviewing the charge and discharge plan, and corrects the charge and discharge plan (step S319). After that, the server 3 returns a series of controls.

[0026] The accuracy of the charge and discharge plan can be improved even in the case where, when it is determined that the connection of the vehicle on standby for charging or discharging should continue, the charge and discharge plan is not revised but the disconnection of the vehicle on standby for charging is reflected in the review of the charge and discharge plan, as in the review process of the charge and discharge plan shown in Fig. 4. Also, in the review process of the charge and discharge plan shown in Fig. 4, the accuracy of the charge and discharge plan can be improved even in the case where the vehicle on standby for charging is replaced with a vehicle on standby for discharging. [Explanation of symbols]

[0027] 1 charger 2 Vehicles 3 Server 4. Communications equipment 100 Charge / discharge control system

Claims

[Claim 1] A charge / discharge control system in which a server controls charging / discharging of individual vehicles in a charger that charges an unspecified number of vehicles based on a charge / discharge plan, The charge / discharge control system is characterized in that, when a new vehicle is connected to the charger and the charge / discharge plan is reviewed, the server acquires information about the vehicle that is connected to the charger and waiting to be charged, and by comparing the acquired information about the vehicle that is waiting to be charged with the previous vehicle information, determines whether to continue connecting or disconnecting the vehicle that is waiting to be charged to the charger, and reflects this in the review of the charge / discharge plan.

Images