Charging station management server for charging of an electric vehicle and method for reservation thereof

Abstract

The present invention relates to a charging station management server and a reservation method thereof. A charging station management server according to one embodiment of the present invention may include a communication unit that communicates with an electric vehicle and a power grid management server; and a processor that, upon receiving a request for a charging station reservation from the electric vehicle, performs a charging station reservation based on driving information received from the electric vehicle, charging station information, and power supply status information received from the power grid management server.

Description

Technology Field

[0001] The present invention relates to a charging station management server and a reservation method thereof, and more specifically, to a technology that enables a vehicle to automatically perform a charging reservation in conjunction with a charging station and to maintain the charging station's power operation. Background Technology

[0002] Recently, interest in and development of electric and hybrid vehicles are increasing in order to reduce carbon emissions and address issues such as global warming caused by excessive carbon emissions.

[0003] Generally, an electric vehicle (EV) refers to a vehicle that uses batteries and motors instead of petroleum fuels and engines. These electric vehicles can operate using the electrical energy stored in the battery as the internally mounted battery is charged by a standard charging system while parked.

[0004] When an electric vehicle requires battery charging while driving, the driver must visit a charging station to recharge the battery. However, unlike conventional cars that use oil as fuel, charging the battery of an electric vehicle takes a relatively long time.

[0005] Therefore, when a large number of electric vehicles are charging or waiting at a specific charging station, or when the power supply situation at the station deteriorates, electric vehicles visiting the station may face situations where they have to wait a long time to charge their batteries or find it difficult to charge as much as desired. The problem to be solved

[0006] Embodiments of the present invention aim to provide a charging station management server and a reservation method thereof that enable a vehicle to reserve a charging station without the driver's awareness, thereby ensuring the continuity of electric vehicle operation, and to respond by performing changes and cancellations to charging station reservations in consideration of driving conditions (e.g., change of destination, change of estimated arrival time, etc.) as well as the power supply conditions of the charging station.

[0007] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0008] A charging station management server according to one embodiment of the present invention may include a communication unit that communicates with an electric vehicle and a power grid management server; and a processor that, upon receiving a request for a charging station reservation from the electric vehicle, performs a charging station reservation based on driving information received from the electric vehicle, charging station information, and power supply status information received from the power grid management server.

[0009] In one embodiment, the driving information may include one or more of a destination, vehicle route, battery status, charging method, estimated time of vehicle arrival, and required power amount.

[0010] In one embodiment, the charging station information may include one or more of the charging station location, charging station reservation status information, supported charging methods, and charging time.

[0011] In one embodiment, the charging station reservation status information may include at least one of the estimated arrival time, charging time, and required power amount of vehicles reserved for each charging station.

[0012] In one embodiment, the processor may include automatically changing or canceling the charging station reservation according to one or more of the destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method.

[0013] In one embodiment, the processor may include issuing a certificate when the charging station reservation is completed.

[0014] In one embodiment, the processor may include receiving advance reservation information from the electric vehicle and transmitting it to the reserved charging station when the charging station reservation is completed.

[0015] In one embodiment, the processor may include performing the charging reservation to a charging station with a low power demand, according to the power demand per charging station predicted by the power grid management server.

[0016] In one embodiment, the processor may include performing a charging station reservation using a vehicle capacity and a charging fee for each charging station determined according to the power supply status.

[0017] A charging station management method according to one embodiment of the present invention may include the step of receiving a charging station reservation request from an electric vehicle; and the step of performing a charging station reservation based on driving information, charging station information, and power supply status information of the electric vehicle.

[0018] In one embodiment, the step of periodically collecting charging station information from a charging station and power supply status information from a power grid server may be further included.

[0019] In one embodiment, the step of performing the charging station reservation may include: when driving information is received from the electric vehicle, selecting a charging station terminal based on the driving information, the charging station information, and the power supply status information; and providing information about the selected charging station terminal to the electric vehicle.

[0020] In one embodiment, the method may further include a step of automatically changing or canceling the charging station reservation based on one or more of a destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method.

[0021] In one embodiment, when the charging station reservation is completed, the step of issuing a certificate for wireless charging may be further included.

[0022] In one embodiment, when the charging station reservation is completed, the method may further include the step of receiving advance reservation information from the electric vehicle and transmitting it to the reserved charging station.

[0023] A charging station management method according to one embodiment of the present invention may include: a step of predicting power demand based on charging station reservation status information; a step of determining a power supply plan and power rates based on the predicted power demand; and a step of providing the power supply plan and power rates to the charging station.

[0024] In one embodiment, the step of predicting the power demand may include predicting at least one of the power demand per charging station, the power demand per region, and the power demand per time period based on the charging station reservation status information. Effects of the invention

[0025] This technology ensures the continuity of electric vehicle operation by allowing the vehicle to reserve a charging station without the driver's awareness, and can perform changes and cancellations to charging station reservations by considering not only driving conditions (e.g., change of destination, change of estimated arrival time, etc.) but also the power supply status of the charging station.

[0026] In addition, various effects that can be identified directly or indirectly through this document may be provided. Brief explanation of the drawing

[0027] FIG. 1 is a diagram showing the configuration of a vehicle charging system according to one embodiment of the present invention. FIG. 2 is a block diagram showing the detailed configuration of a charging station management server according to one embodiment of the present invention. FIG. 3 is a flowchart illustrating a method for reserving a charging station for an electric vehicle and a charging process for an electric vehicle arriving at a charging station according to an embodiment of the present invention. FIG. 4 is a flowchart specifically illustrating a method for reserving a charging station for an electric vehicle based on power information according to one embodiment of the present invention. FIG. 5 is a flowchart illustrating the process of reserving a charging station for an electric vehicle according to one embodiment of the present invention. FIG. 6 is a diagram showing the power supply flow according to power demand in accordance with one embodiment of the present invention. FIG. 7 is a diagram showing the charging station reservation flow by reservation time according to one embodiment of the present invention. FIG. 8 is a diagram showing the charging station management flow according to a change in power supply amount according to one embodiment of the present invention. FIG. 9 is a drawing showing an example of changing charging station reservation status information according to one embodiment of the present invention. FIG. 10 illustrates a computing system according to one embodiment of the present invention. Specific details for implementing the invention

[0028] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0029] In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the terms. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0031] The present invention discloses a technology that enables efficient operation of charging stations and enhances user convenience by automatically reserving an electric vehicle at an optimal charging station when charging is required while driving, without the driver's awareness, and performing the charging station reservation by determining the electric vehicle capacity and rates of the charging station based on a power supply plan according to power demand forecasting.

[0032] Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 10.

[0033] FIG. 1 is a diagram showing the configuration of a vehicle charging system according to one embodiment of the present invention, and FIG. 2 is a block diagram showing the detailed configuration of a charging station management server according to one embodiment of the present invention.

[0034] Referring to FIG. 1, a vehicle charging system according to one embodiment of the present invention may include an electric vehicle (10), a charging station management server (200), and a power grid management server (300).

[0035] The electric vehicle (10) is a vehicle that operates based on electric energy and communicates with a charging station management server (200) to monitor the vehicle's power energy status in real time, thereby allowing it to reserve a charging station terminal (410) of a charging station (400) to ensure the continuous operation of the electric vehicle. That is, if the electric vehicle (10) lacks sufficient vehicle power to drive to a destination, it can automatically request a charging station reservation to one of the nearby charging stations through the charging station management server (200). At this time, when a destination is entered by a user, the electric vehicle (10) calculates the amount of power required to reach the destination, and if the amount of power required to reach the destination is greater than the vehicle's current battery capacity (when vehicle power is insufficient), it can request a charging station reservation.

[0036] The electric vehicle (10) can support applications for autonomous driving and navigation, and can set a vehicle route and estimated time of arrival and request a charging station reservation by utilizing one or more of a destination, road environment, and traffic volume.

[0037] The electric vehicle (10) can perform V2X and V2G communication with the charging station management server (200) and the power grid management server (300). At this time, V2X communication is a technology that shares information with the vehicle or surrounding communication infrastructure for the purpose of providing safety and convenience to the user, and IEEE 802.11p defines data transmission and reception for V2X communication, and SAE J2735 defines application messages for V2X communication. In addition, V2G communication is a technology that enables the adjustment of supply according to power demand through the connection of the electric vehicle, charging station, and power grid network, and IEC 61850 can define a communication protocol for managing a charging station, which is one of the energy storage devices in the power grid.

[0038] In addition, the electric vehicle (10) of the present invention can perform wireless charging at a charging station terminal (410) of a charging station (400), and mutual information sharing between the vehicle (10) and the charging station terminal (410) for wireless charging can be performed, and can be implemented based on a communication procedure for sharing payment / charging methods, etc. for wireless charging of the vehicle as defined in ISO 15118.

[0039] The electric vehicle (10) establishes a session with a charging station terminal (410) within the charging station to share information necessary for wireless charging, and can share information necessary for wireless charging with the charging station terminal (410) through the session establishment. At this time, the information necessary for wireless charging may include battery status, charging request amount, charging time, maximum voltage, maximum current, minimum current, etc.

[0040] When the electric vehicle (10) reaches a reserved charging station and charging is performed, it can share charging status information with a charging station terminal (410) and receive metering information from the charging station terminal (410). At this time, the metering information may include information on the amount of electricity and usage fees.

[0041] The charging station management server (200) is a server that manages charging stations for supplying electric energy to an electric vehicle (10), and communicates with the electric vehicle (10), the charging station terminal (410) of the charging station (400), and the power grid management server (300). The charging station management server (200) may be installed in the electric vehicle (10) or may be a user terminal device owned by the passenger, and if the charging station management server (200) is a user terminal device owned by the passenger, it may communicate with the electric vehicle (10) to receive information about the vehicle.

[0042] When the charging station management server (200) receives a charging station reservation request from the electric vehicle (10), it can perform a charging station reservation based on the driving information and charging station information received from the electric vehicle (10).

[0043] At this time, driving information may include one or more of a destination, vehicle route, battery status, charging method, estimated time of vehicle arrival, and required power amount. Charging station information may include at least one of a charging station location, charging station reservation status information, supported charging methods, charging time, billing method, rate, and power supply status. Table 1 below is an example of storing charging station information.

[0044]

[0045] As shown in Table 1, charging station information may include the reservation status (available or unavailable for reservation) by charging station terminal, the charging method (wireless or wired), and the billing method (card, etc.).

[0046] The charging station management server (200) can automatically change or cancel a charging station reservation based on one or more of the following: destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method. At this time, the charging station management server (200) may also automatically change or cancel a charging station reservation based on a request from the electric vehicle (10).

[0047] When a charging station management server (200) completes a charging station reservation, it issues a certificate and transmits the certificate to the electric vehicle (10) and the charging station terminal (410) of the charging station where the reservation was made, so that the electric vehicle (10) can perform fast charging based on the certificate when it arrives at the charging station.

[0048] Additionally, the charging station management server (200) can receive advance reservation information for charging from the electric vehicle (10) when the charging station is reserved and transmit it to the charging station terminal (410) of the charging station where the reservation was made. At this time, the advance reservation information is information required for wireless charging and may include battery status, charging request amount, charging time, maximum voltage, maximum current, minimum current, etc. That is, the charging station terminal (410) can receive the advance reservation information from the charging station management server (200) in advance and perform charging preparation in advance. Accordingly, when the electric vehicle (10) arrives at the reserved charging station (400), charging preparation is prepared in advance so that charging can be performed immediately, thereby shortening the charging preparation time.

[0049] The charging station terminal (410) communicates with the power grid management server (300) to collect power supply plans and power rate information in real time to determine the capacity and charging rate of the electric vehicle, and communicates with the charging station management server (200) to share the capacity and charging rate of the electric vehicle.

[0050] The charging station (400) can be connected via a network and a gateway (600). The charging station (400) connects to the network via a charging station terminal (410) to transmit and receive information necessary for charging. That is, when the charging station terminal (410) receives a request for charging information and a request for charging reservation from the electric vehicle (10), it can provide charging reservation information to the electric vehicle (10) after making a reservation at the charging station. At this time, the charging reservation information provided to the electric vehicle (10) may include information about the reserved charging station (charging station location, fee information, etc.).

[0051] The power grid management server (300) manages the amount of power supplied from the power plant (500) to distribute and supply power to regions (cities), charging stations, etc., and communicates with the charging station management server (200) to collect real-time charging station reservation status information, predicts power demand by charging station / region / time period based on the charging station reservation status information, and can determine power supply plans and power rates based on the power demand.

[0052] In FIG. 1, an example is disclosed in which the charging station management server (200) and the power grid management server (300) are implemented separately, but this is not limited thereto, and the charging station management server (200) and the power grid management server (300) may be implemented as a single server.

[0053] As such, the vehicle charging system of the present invention allows an electric vehicle to determine its own power status and automatically make a charging station reservation via V2X communication without user awareness, and by providing the prior reservation information to the charging station, the time required for charging can be minimized.

[0054] In addition, the vehicle charging system of the present invention enables more efficient charging station reservation and management by performing electric vehicle charging station reservations according to the power supply and demand situation at the charging stations.

[0055] Referring to FIG. 2, the charging station management server (200) may include a communication unit (210), a storage unit (220), a display unit (230), and a processor (240).

[0056] The communication unit (210) is a hardware device implemented with various electronic circuits to transmit and receive signals via wireless or wired connections. For example, the communication unit (210) can perform V2X communication, V2G communication, wireless charging communication, etc. with an electric vehicle (10), a power grid management server (300), a charging station terminal (410), etc. Additionally, the communication unit (210) can receive power supply plans and power rate information from the power grid management server (300), receive electric vehicle capacity and charging rate information from the charging station terminal (410), receive charging reservation requests and advance reservation information from the electric vehicle (10), and transmit a charging reservation completion to the electric vehicle (10).

[0057] For example, the storage unit (220) may store power supply plans and power rate information received from a power grid management server (300) outside the vehicle, or electric vehicle capacity and charging rate information received from a charging station terminal (410). Additionally, the storage unit (220) may store advance reservation information received from the electric vehicle (10). The storage unit (220) may include memory of a flash memory type, hard disk type, micro type, and card type (e.g., SD card (Secure Digital Card) or XD card (eXtream Digital Card)), and a storage medium of one type of memory such as RAM (Random Access Memory), SRAM (Static RAM), ROM (Read-Only Memory), PROM (Programmable ROM), EEPROM (Electrically Erasable PROM), magnetic memory (MRAM, Magnetic RAM), magnetic disk, and optical disk.

[0058] The display unit (230) can display information such as the reservation status of charging stations, power supply plan information for each charging station received from the power grid management server (300), power rates, and requests for charging station reservation and reservation change for the electric vehicle (10). The display unit (230) can be implemented as a head-up display (HUD), a cluster, an AVN (Audio Video Navigation), etc. Additionally, the display unit (230) may include one of a liquid crystal display (LCD), a thin film transistor liquid crystal display (TFT LCD), a light-emitting diode (LED) display, an organic light-emitting diode (OLED) display, an active matrix OLED (AMOLED) display, a flexible display, a bent display, and a 3D display. Some of these displays may be implemented as transparent displays configured to be transparent or translucent so that the outside can be seen. Additionally, the display unit (230) is provided as a touchscreen including a touch panel and can be used as an input device in addition to an output device.

[0059] The processor (240) can be electrically connected to the communication unit (210), storage unit (220), display unit (230), etc., and can electrically control each component and can be an electrical circuit that executes software commands, thereby performing various data processing and calculations described later.

[0060] When the processor (240) receives a request for a charging station reservation from the electric vehicle (10), it can automatically perform the charging station reservation based on driving information received from the electric vehicle (10), charging station information, and power supply status information received from the power grid management server (300).

[0061] The processor (240) can automatically make a charging station reservation using one or more of the destination, vehicle route, battery status, charging method, estimated time of vehicle arrival, and required power amount received from the electric vehicle (10).

[0062] The processor (240) can automatically perform a charging station reservation using one or more of the charging station location, charging station reservation status information, supported charging method, and charging time collected through the charging station terminal (410).

[0063] When the processor (240) receives a charging reservation request from the electric vehicle (10), it can make a charging reservation to a charging station with a low power demand or a high power supply, according to the power demand per charging station predicted by the power grid management server (300).

[0064] Additionally, the processor (240) can perform a charging station reservation by selecting the optimal charging station using the vehicle capacity and charging fee for each charging station determined by the power supply status.

[0065] When the charging station reservation is completed, the processor (240) can issue a certificate to confirm the reservation and transmit the certificate to the charging station terminal (410) and the electric vehicle (10) for which the reservation has been completed.

[0066] Additionally, when the charging station reservation is completed, the processor (240) can provide the pre-reservation information received from the electric vehicle (10) to the charging station terminal (410) of the charging station where the reservation is completed. Accordingly, the charging station terminal (410) can perform charging preparation in advance so that fast charging can be performed when the electric vehicle (10) arrives.

[0067] The processor (240) can automatically change or cancel a charging station reservation based on one or more of the following: destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method. That is, the processor (240) communicates with the electric vehicle (10) in real time or periodically to identify changes in destination, changes in estimated time of arrival, changes in road environment, changes in traffic volume, changes in vehicle route, changes in battery status, changes in charging method, changes in payment method, etc., and can change the reserved charging station to another charging station or cancel the reservation. In addition, the processor (240) can change or cancel the charging station reservation based on changes in the charging station situation (increase in charging station customers, charging station terminal failure, etc.) and changes in the charging method through real-time or periodic communication with the charging station terminal (410).

[0068] The processor (240) can receive power supply plans and power rate information for each charging station from the power grid management server (300) and receive electric vehicle capacity and charging rate information from the charging station terminal (410) to reserve an optimal charging station.

[0069] When the vehicle charging station management server (200) of the electric vehicle (10) inputs a destination before the vehicle departs or when there is insufficient power to reach the destination while the vehicle is driving, it requests a charging station reservation from the charging station management server (200) to continue driving, and when the optimal charging station reservation is completed by the charging station management server (200) and the power grid management server (300), the electric vehicle (10) can reach the reserved charging station and quickly perform wireless charging.

[0070] In addition, the present invention can respond to changes in situation, such as changes in destination or estimated arrival time, by changing or canceling charging station reservations, thereby enabling flexible response to various situational changes that may occur during driving.

[0072] Hereinafter, a method for reserving a charging station for an electric vehicle according to an embodiment of the present invention will be described with reference to FIG. 3. FIG. 3 is a flowchart illustrating a method for reserving a charging station for an electric vehicle according to an embodiment of the present invention.

[0073] In the following, the operation described as being performed by the electric vehicle (10) of FIG. 1 may be assumed to be performed by the charging station management server (200) mounted on the electric vehicle (10). Additionally, the operation described as being performed by the electric vehicle (10) may be understood as being controlled by the processor (240) of the charging station management server (200).

[0074] Referring to FIG. 3, the charging station management server (200) periodically communicates with the charging station terminal (410) to collect and manage charging station information and transmits charging station information, such as charging station location, charging station ID, charging method, fee information, payment method, charging station terminal location, charging station terminal ID, and charging station reservation status information, to the electric vehicle (10) (S101).

[0075] The electric vehicle (10) requests a session setup to perform information sharing necessary for wireless charging with the charging station terminal (410), and the charging station terminal (410) responds by issuing a session ID (S102).

[0076] Subsequently, the electric vehicle (10) shares charging information necessary for wireless charging, such as battery status, requested charging amount, charging time, maximum voltage, maximum current, and minimum current, with the charging station terminal (410) (S103), and requests a charging reservation from the charging station (400) based on the charging information. Accordingly, the charging station terminal (410) performs a response to approve the reservation (S104). At this time, when a destination is entered by the user, the electric vehicle (10) calculates the amount of power required to reach the destination, and if the amount of power required to reach the destination is greater than the vehicle's current battery capacity (if the vehicle's power is insufficient), it may request a reservation for the charging station and a reservation for a shared vehicle.

[0077] Afterwards, the electric vehicle (10) reaches the charging station (400) and requests power based on the reserved information, and the charging station terminal (410) confirms the vehicle's reservation and notifies the preparation to provide power (S105).

[0078] Next, the electric vehicle (10) can receive as much power as is needed according to the vehicle's characteristics through the information required for wireless charging that has been exchanged in advance, and shares charging status information with the charging station terminal (410) (S106). Afterwards, the charging station terminal (410) shares metering information including the amount of power provided and fee information with the electric vehicle (10) (S107).

[0079] In this way, when the electric vehicle (10) of the present invention has insufficient vehicle power to drive to a destination, it automatically requests a charging station reservation and a shared vehicle reservation, and when the charging station management server (200) receives a charging station reservation request from the electric vehicle (10), it can perform a charging station reservation based on the driving information of the electric vehicle (10) and the charging station information.

[0080] A charging station management server (200) that receives a charging station reservation can periodically collect charging station information and select an optimal charging station terminal based on driving information and charging station information received along with a charging station reservation request from an electric vehicle (10), and provide information about the selected charging station terminal to the electric vehicle. Accordingly, the electric vehicle (10) can guide a route to the reserved (selected) charging station or perform automatic driving control. To this end, the electric vehicle (10) may further include a navigation device or an automatic driving control device.

[0081] Additionally, the charging station management server (200) can automatically change or cancel a charging station reservation based on one or more of the destination, vehicle route, road environment, traffic volume, estimated time of arrival, battery status, charging method, charging station information, fee information, and payment method, and can also automatically change or cancel a charging station reservation based on a request from the electric vehicle (10). That is, the electric vehicle (10) can also request the charging station management server (200) to automatically change or cancel a charging station reservation based on one or more of the destination, vehicle route, road environment, traffic volume, estimated time of arrival, battery status, charging method, charging station information, fee information, and payment method.

[0082] Hereinafter, a method for reserving a charging station for an electric vehicle based on power information according to an embodiment of the present invention will be described in detail with reference to FIG. 4. FIG. 4 is a flowchart specifically illustrating a method for reserving a charging station for an electric vehicle based on power information according to an embodiment of the present invention.

[0083] In the following, the operation described as being performed by the electric vehicle (10) of FIG. 1 can be assumed to be performed by a processor (not shown) mounted on the electric vehicle (10). Additionally, the operation described as being performed by the charging station management server (200) can be understood as being controlled by the processor (240) of the charging station management server (200).

[0084] Referring to FIG. 4, the charging station management server (200) can collect and manage charging station information in real time (S201). The charging station information may include at least one of charging station location information, reservation status information, supported charging method information, billing method information, fee information, and power supply status information. Additionally, the charging station reservation status information may include information such as the vehicle's estimated arrival time, charging time, and required power amount.

[0085] The charging station management server (200) provides charging station information to the electric vehicle (10) (S202).

[0086] The electric vehicle (10) determines whether the vehicle's current power state requires charging based on driving information and charging station information (S203). That is, the electric vehicle (10) can determine whether charging is required by comparing the State of Charge (SOC) predicted to be required to reach the destination with the currently remaining SOC. At this time, the driving information may include at least one of the following: destination, vehicle route, battery status, charging method, estimated time of vehicle arrival, and required power amount. Additionally, the charging station information may include at least one of the following: charging station location information, reservation status information, supported charging method information, billing method information, rate information, and power supply status information.

[0087] Accordingly, when it is determined that charging is required, the electric vehicle (10) requests a charging station reservation from the charging station management server (200) (S204), and the charging station management server (200) can reserve an optimal charging station by considering the charging station reservation status, the vehicle route received from the electric vehicle (10), the power supply status and rate received from the power grid management server (300), etc. (S205). At this time, the electric vehicle (10) transmits the pre-reservation status information to the charging station management server (200) in advance, so that when the electric vehicle (10) arrives at the charging station and starts charging, it can perform charging using the pre-reservation status information received in advance, thereby minimizing the preparation time for charging.

[0088] Meanwhile, the charging station management server (200) determines whether a charging station reservation change or cancellation is necessary based on a change in destination, a change in the estimated time of arrival, a change in the charging station power supply status, a change in the road environment, a change in traffic volume, etc. (S206), and if a reservation change or cancellation is necessary, it can perform a charging station reservation change or cancellation (S207). Then, the charging station management server (200) sends information regarding the charging station reservation change or cancellation to the electric vehicle (10) so that the electric vehicle (10) can be notified of the charging station reservation change or cancellation (S208).

[0089] The charging station management server (200) can receive destination change information and estimated arrival time change information in real time from the electric vehicle (10), receive changes in the electric power supply status in real time from the power grid management server (300), and receive traffic information and road change information in real time from the traffic information center (not shown), etc.

[0090] Accordingly, the charging station management server (200) can change or cancel the reservation by re-selecting the optimal charging station based on information received from the electric vehicle (10), such as changes in destination and estimated arrival time, and changes in the charging station's power supply status.

[0091] When the electric vehicle (10) reaches a reserved charging station, it can quickly perform charging based on the prior reservation information and certificate (S209). At this time, the prior reservation status information may include one or more of the charging amount, billing payment method, time of arrival at the charging station, and certificate.

[0092] Meanwhile, the charging station management server (200) collects charging station reservation status information for each charging station (S210) and shares the charging station reservation status information of the charging stations with the power grid management server (300) (S211). Although only charging station A is shown in FIG. 4, it is not limited thereto and charging station reservation status information can be collected from multiple charging stations.

[0093] Accordingly, the power grid management server (300) can predict the power demand per charging station, the power demand per region, and the power demand per time period based on the charging station reservation status information (S212).

[0094] Next, the power grid management server (300) can determine the power supply plan and power rate based on the predicted power demand (S213).

[0095] Next, the power grid management server (300) can share power supply plans and power rate information with charging station A and the charging station management server (200) (S214).

[0096] The charging station terminal of charging station A determines the amount of power available for supply based on the power supply plan and power rate information, determines the electric vehicle capacity and charging rate of the charging station (S215), and shares this with the charging station management server (200) (S216).

[0097] Accordingly, the charging station management server (200) can change or cancel the reservation for a previously reserved case based on changes in the shared electric vehicle capacity and charging fee.

[0099] FIG. 5 is a flowchart illustrating the process of reserving a charging station for an electric vehicle according to one embodiment of the present invention.

[0100] Referring to FIG. 5, the charging station management server (200) provides charging station status information (vehicle arrival time, charging time, required power amount) to the power grid management server (300), and the power grid management server (300) provides information on power supply plans and power rates for each charging station terminal to the power plant (500), and provides power supply and power rates for each charging station terminal to the charging station terminal (410). Accordingly, the charging station terminal (410) can determine the vehicle capacity and rates and provide them to the charging station management server (200).

[0101] In this way, when the electric vehicle (10) of the present invention has insufficient vehicle power to drive to a destination, it automatically requests a charging station reservation from the charging station management server (200), and the charging station management server (200) shares information in real time with the power grid management server (300) to predict the amount of power demand in real time and determine the power supply plan and power rate.

[0103] FIG. 6 is a diagram illustrating a charging reservation process based on power demand according to one embodiment of the present invention.

[0104] Referring to FIG. 6, the power grid management server (300) is connected to power supply devices (510, 520), and the power supply devices (510, 520) can provide power to cities and charging stations.

[0105] The power supply device (510) can provide power to City A and charging station A (420), and the power supply device (520) can provide power to City B and charging station B (430). At this time, the charging station terminals (421, 431) of each charging station (420, 430) can be connected to the power supply device (510, 520) and the charging station management server (200), respectively, through the gateway (620, 630).

[0106] The power supply device (510, 520) provides power demand information of each city and charging station to the power grid management server (300).

[0107] In FIG. 6, when the power demand of City A and charging station A is low and the power demand of City B and charging station B is high, when an electric vehicle (10) requests a charging station reservation through the charging station management server (200), the charging station management server (200) makes a reservation at charging station A (420) with low power demand and notifies the electric vehicle (10) of this.

[0108] In this way, the charging station management server (200) communicates in real time with the power supply device (510) to obtain information about charging stations with low power demand in advance, and when a reservation request comes from an electric vehicle, it can mediate to make a reservation at a charging station with low power demand.

[0110] FIG. 7 is a diagram showing the charging station reservation flow by reservation time according to one embodiment of the present invention.

[0111] Referring to FIG. 7, the charging station management server (200) receives charging station reservation status information from each charging station (440, 450), updates the charging station reservation status information, and transmits the charging station reservation status information to the power grid management server (300). At this time, each charging station terminal (441, 451) of the charging station (440, 450) can be connected to the power supply device (530) and the charging station management server (200) respectively through the gateway (640, 650). At this time, the charging station reservation status information is as shown in Table 2 below.

[0112]

[0113] As shown in Table 2, the charging station reservation status information may include the reservation status by charging station terminal, the amount of charging requested, and fee information.

[0114] Accordingly, the power grid management server (300) can predict the power demand by charging station / region / time period based on the charging station reservation status information, and determine the power supply plan and power rate based on the power demand.

[0115] The power grid management server (300) provides power supply planning information to the power supply device (530) and provides power rate information to the charging station management server (200).

[0116] Accordingly, the power supply device (530) provides power supplied from the power plant (500) or wind turbine (600) to the corresponding charging station at the charging reservation time.

[0118] FIG. 8 is a diagram showing a charging station management flow according to a change in power supply amount according to an embodiment of the present invention, and FIG. 9 is a diagram showing an example of a change in charging station reservation status information according to an embodiment of the present invention.

[0119] Referring to FIG. 8, the power supply device (540) receives power from a power plant (500) or a wind turbine (600) and supplies it to a charging station (460) and city A.

[0120] In addition, the power supply device (540) transmits power demand information and power supply information to the power grid management server (300).

[0121] If the power supply of the charging station (460) decreases and the power demand increases, the power grid management server (300) can change the available charging amount and charges for the charging station (460) as shown in FIG. 9. Referring to FIG. 9, it can be seen that the charges and available charging amount per charging station terminal of the charging station (460) are changed.

[0123] The power grid management server (300) provides the changed power supply amount and rate information to the charging station terminal (461) through the power supply device (540), and the charging station terminal (461) can provide the changed power supply amount and rate information to the charging station management server (200).

[0125] FIG. 10 illustrates a computing system according to one embodiment of the present invention.

[0126] Referring to FIG. 10, the computing system (1000) may include a processor (1100), memory (1300), a user interface input device (1400), a user interface output device (1500), storage (1600), and a network interface (1700) connected via a bus (1200).

[0127] The processor (1100) may be a semiconductor device that executes processing on instructions stored in a central processing unit (CPU) or memory (1300) and / or storage (1600). The memory (1300) and storage (1600) may include various types of volatile or non-volatile storage media. For example, the memory (1300) may include ROM (Read Only Memory) and RAM (Random Access Memory).

[0128] Accordingly, steps of the method or algorithm described in connection with the embodiments disclosed herein may be directly implemented in hardware, software modules, or a combination of both, executed by the processor (1100). The software modules may reside in storage media such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs (i.e., memory (1300) and / or storage (1600)).

[0129] An exemplary storage medium is coupled to a processor (1100), and the processor (1100) can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium may be integrated with the processor (1100). The processor and the storage medium may reside within an application-specific integrated circuit (ASIC). The ASIC may reside within a user terminal. Alternatively, the processor and the storage medium may reside as separate components within the user terminal.

[0130] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0131] Accordingly, the embodiments disclosed in this invention are intended to illustrate, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments. The scope of protection of this invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of this invention.

Claims

Claim 1 A charging station management server comprising: a communication unit that communicates with an electric vehicle and a power grid management server; and a processor that, upon receiving a request for a charging station reservation from the electric vehicle, performs a charging station reservation based on driving information received from the electric vehicle, charging station information, and power supply status information received from the power grid management server, wherein, when the charging station reservation is completed, the processor receives pre-reservation information from the electric vehicle and transmits it to the reserved charging station, wherein the pre-reservation information includes one or more of a battery status, a charging request amount, a charging time required, a maximum voltage, a maximum current, and a minimum current, wherein the processor performs the charging station reservation to a charging station with a low power demand amount according to the power demand amount for each charging station predicted by the power grid management server, and performs the charging station reservation using the vehicle capacity and charging fee for each charging station determined according to the power supply status, wherein the vehicle capacity and charging fee for each charging station are determined by the charging station terminal of each charging station according to the power supply plan and power fee determined by the power grid management server based on the power demand amount. Claim 2 A charging station management server according to claim 1, wherein the driving information includes one or more of a destination, a vehicle route, a battery status, a charging method, an estimated time of vehicle arrival, and a required amount of power. Claim 3 A charging station management server according to claim 1, wherein the charging station information comprises one or more of a charging station location, charging station reservation status information, supported charging methods, and charging time. Claim 4 A charging station management server according to claim 3, wherein the charging station reservation status information includes at least one of the estimated arrival time, charging time, and required power amount of vehicles reserved for each charging station. Claim 5 A charging station management server according to claim 1, wherein the processor automatically changes or cancels the charging station reservation according to one or more of a destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method. Claim 6 A charging station management server according to claim 1, wherein the processor issues a certificate when the charging station reservation is completed. Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 A charging station reservation method comprising: a step in which a charging station management server receives a charging station reservation request from an electric vehicle; a step in which the charging station management server performs a charging station reservation based on the driving information, charging station information, and power supply status information of the electric vehicle; further comprising a step in which, when the charging station reservation is completed, the charging station management server receives pre-reservation information from the electric vehicle and transmits it to the reserved charging station, wherein the pre-reservation information includes one or more of a battery status, a charging request amount, a charging time required, a maximum voltage, a maximum current, and a minimum current; a step in which the charging station reservation is performed to a charging station with a low power demand amount according to the power demand amount for each charging station predicted by the power grid management server; and further comprising a step in which the charging station reservation is performed using the vehicle capacity and charging fee for each charging station determined according to the power supply status, wherein the vehicle capacity and charging fee for each charging station are determined by the charging station terminal of each charging station according to the power supply plan and power rate determined by the power grid management server based on the power demand amount. Claim 11 A charging station reservation method according to claim 10, further comprising the step of a charging station management server periodically collecting charging station information from a charging station and power supply status information from a power grid server. Claim 12 A charging station reservation method according to claim 10, wherein the step of performing the charging station reservation comprises: a step of selecting a charging station terminal based on the driving information, the charging station information, and the power supply status information when driving information is received from the electric vehicle; and a step of providing information regarding the selected charging station terminal to the electric vehicle. Claim 13 A charging station reservation method according to claim 10, further comprising the step of a charging station management server automatically changing or canceling the charging station reservation according to one or more of a destination, road environment, traffic volume, vehicle route, battery status, estimated time of arrival, charging method, charging station information, fee information, and payment method. Claim 14 A charging station reservation method according to claim 10, further comprising the step of issuing a certificate for wireless charging when the charging station management server completes the charging station reservation. Claim 15 delete Claim 16 A charging station reservation method comprising: a step in which a power grid management server predicts power demand based on charging station reservation status information; a step in which a power grid management server determines a power supply plan and power rates based on the predicted power demand; a step in which a power grid management server provides the power supply plan and power rates to a charging station; further comprising a step in which, when a charging station reservation is completed, a charging station management server receives pre-reservation information from an electric vehicle and transmits it to the reserved charging station, wherein the pre-reservation information includes one or more of a battery status, a charging request amount, a charging time required, a maximum voltage, a maximum current, and a minimum current; a step of performing a charging station reservation to a charging station with a low power demand based on the power demand for each charging station predicted by the power grid management server; and a step of performing a charging station reservation using a vehicle capacity and a charging rate for each charging station determined according to the power supply status, wherein the vehicle capacity and charging rate for each charging station are determined by a charging station terminal of each charging station according to the power supply plan and the power rates determined by the power grid management server based on the power demand. Claim 17 A charging station reservation method according to claim 16, wherein the step of predicting the power demand is characterized by predicting at least one of the power demand per charging station, the power demand per region, and the power demand per time period based on the charging station reservation status information.

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