KR20230172652A - Wireless charging and discharging method for electric powered vehicle and apparatus and system therefor - Google Patents

Abstract

The present invention relates to a charging/discharging method for an electric drive vehicle and a device and system therefor. The charging/discharging method for an electric drive vehicle according to an aspect of the present disclosure is based on a charge/discharge rate policy corresponding to an area code. It may include receiving information about the charging/discharging system, determining a charging/discharging schedule based on the charging/discharging rate policy, and performing charging/discharging with the charging station based on the determined charging/discharging schedule. Therefore, the present invention has the advantage of providing a cost-effective V2G (Vehicle-to-Grid) system.

Description

Charging/discharging method for electric powered vehicle and apparatus and system therefor {Wireless charging and discharging method for electric powered vehicle and apparatus and system therefor}

The present invention relates to charging/discharging technology for electric vehicles, and more specifically, to charging/discharging control technology for power system protection and cost-effective charging/discharging in a V2G (Vehicle to Grid) system.

A representative eco-friendly technology required for vehicle operation is replacing internal combustion engines that use fossil fuels. This means that vehicles using internal combustion engines will be replaced by electric vehicles. Because electric vehicles (EVs) drive electric motors with batteries, they can avoid the use of internal combustion engines to some or all extent, significantly reducing environmental pollution and dependence on fossil fuel resource consumption. Currently, electric vehicles are being commercialized in a hybrid type (Plug-in Hybrid Electric Vehicle, PHEV) that is driven by an internal combustion engine, an electric motor, and a battery, and a type that is driven only by a battery and an electric motor (Battery Electric Vehicle, BEV).

Plug and Charging is a technology concept first introduced in ISO 15118, the international standard for electric vehicle charging. The forward-looking concept of the standard enables a more convenient and safer way for users to charge EVs and can be used at any charging station that fully supports the standard.

The only action required by the driver is to connect the charging cable to the EV and/or the charging station, and once the charging cable is connected, the EV will automatically identify itself to the charging station on the driver's behalf and receive energy to recharge its battery. Authority is granted.

Recently, charging for electric vehicles is being actively researched not only in the wired charging method using a charging cable, but also in the wireless charging method that charges by receiving power wirelessly.

Therefore, future plug and charging will cover both conventional wired charging - including, for example, AC charging using an AC fast charger and DC charging using a DC fast charger - as well as wireless charging such as electromagnetic induction or magnetic resonance. It is expected that it can be applied.

In the future, plug and charge will be applied not only to electric vehicles, but also to various motor-driven transportation methods such as commercial drones, electric buses, personal mobility such as electric kickboards and electric bicycles, amphibious vehicles, and urban air mobility (UAM), which is a vertical takeoff and landing electric airplane. It is expected that this will also apply.

The concept of Urban Air Mobility (UAM) was first defined by the National Aeronautics and Space Administration (NASA) as “safe and efficient air traffic operations in metropolitan areas for manned and unmanned aircraft systems.” Recently, as governments, businesses, and research institutes have shown increasing interest in UAM, this new concept is spreading rapidly.

According to a market report by Global Information, Inc., the urban air mobility (UAM) market size will expand at a compound annual growth rate (CAGR) of 13.5%, from $2.6 billion in 2020 to $9.1 billion in 2030. It is predicted to grow. Factors such as improved efficiency, safety for people, and increased investment demand are expected to promote market growth.

UAM is expected to revolutionize existing transportation modes including highways, rail, air and waterways. A 2018 Morgan Stanley blue paper estimates that the global UAM addressable market will reach $1.5 trillion by 2040.

The UAM concept can be further extended to applications in rural areas where existing ground transportation infrastructure is inadequate. In particular, in addition to the transportation sector, UAM vehicles are expected to be applied in specific scenarios such as tourism, industry, emergency medical services, and fire control.

In the future, smart UAM vehicles may be equipped with autonomous driving capabilities and remote control functions to eliminate the need for a pilot on board. This not only eliminates the need for pilots and related costs in the vehicle, but also prevents the risk of safety accidents due to human error, and makes it easier and safer to control and control the vehicle on the ground.

UAM vehicles are flying vehicles that transport passengers or cargo on a point-to-point route within an urban area. Unlike aircraft that use conventional runways due to the constraints of buildings, factories, road traffic and urban crowds, the ideal vehicle model must be autonomous, small, efficient, agile and maneuverable with the ability to take off and land vertically.

In addition, electric UAM vehicles are environmentally friendly by using eco-friendly energy such as solar energy, electric energy, and hydrogen fuel rather than existing fossil fuels in consideration of atmospheric environmental issues, etc., and have the advantage of producing no exhaust gases at all.

UAM vehicles have the advantage of being faster and more efficient than traditional ground transportation in that they allow individuals and cargo to move between cities on direct air routes.

The centralized UAM platform provides a convenient network, eliminating the need for individuals to own their own UAM vehicles. This not only increases asset utilization but also reduces resource waste.

Additionally, a centralized UAM platform can eliminate the parking problem that dominates much of today's urban life, and has the advantage of realizing a true sharing economy compared to traditional cars.

UAM can provide short-distance (3 km - 100 km) air services and is designed for urban residents, effectively solving the "last 50 km" problem that current airlines cannot provide.

In order to operate electric vehicles efficiently, a safe and efficient charging/discharging method is required.

In particular, efficient control of charging/discharging of electric vehicles by considering regional differences in system parameters and rate policies is very important for not only ensuring the safety of electric vehicles but also for cost-effective management.

The purpose of the present disclosure is to provide a charging/discharging method for an electric vehicle and a device and system therefor.

In addition, an object of the present disclosure has the advantage of providing a charging/discharging method for an electric vehicle that can protect the power system and reduce charging costs, as well as a device and system therefor.

In addition, the purpose of the present disclosure is to minimize user inconvenience and minimize vehicle maintenance costs by providing charging/discharging scheduling optimized for the current location and/or current (or future) driving path of the electric vehicle (V2G) ( Vehicle-to-Grid) system is provided.

In addition, the purpose of the present disclosure is to provide an electric drive vehicle capable of minimizing charging costs by adaptively determining wired/wireless charging/discharging schedules based on different charging/discharging rate policies by region/electric power operator/charging station. will be.

In addition, the purpose of the present disclosure is to provide vehicle-to-grid (V2G) technology that can safely protect the power system by dynamically correcting system parameters by region/power operator/charging station according to the current location and/or future driving plan of the electric drive vehicle. Grid) system is provided.

In addition, the purpose of the present disclosure is to provide a V2G (Vehicle-to-Grid) system that enables stable power supply by minimizing load fluctuations in the power system by transmitting idle power charged in the battery of an electric vehicle back to the power system. It is done.

Additionally, the purpose of the present disclosure is to provide a V2G (Vehicle-to-Grid) system that can effectively solve the problem of battery deterioration due to frequent battery charging/discharging by providing optimal charging/discharging scheduling for electric vehicles. .

In addition, the purpose of this disclosure is to predict power demand in real time by region/power business operator/charging station/time slot through big data-based prior learning, and automatically update charge/discharge rates accordingly, thereby effectively reducing power demand. It provides a V2G (Vehicle-to-Grid) system that can be distributed.

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

A charging/discharging method in an electric drive vehicle according to an aspect of the present disclosure includes receiving information about a charging/discharging rate policy corresponding to an area code and determining a charging/discharging schedule based on the charging/discharging rate policy. and performing charging/discharging with the charging station based on the determined charging/discharging schedule.

In an embodiment, the method further includes measuring the current location of the electric drive vehicle and transmitting information about the measured current location to a server through a network, and the area mapped to the measured current location. Information about the charge/discharge rate policy corresponding to the code may be received from the server.

In an embodiment, the method further includes establishing a communication channel with the charging station and performing a mutual authentication and security procedure through the communication channel, wherein the communication channel is determined based on the success of the mutual authentication and security procedure. Information about the charge/discharge rate policy corresponding to the area code can be received from the charging station.

In an embodiment, the step of determining a charge/discharge schedule based on the charge/discharge rate policy includes predicting a charge/discharge possible time zone and determining an optimal charge/discharge schedule based on the charge/discharge rate policy and the predicted charge/discharge time zone. It may include determining a charge/discharge time period that generates a cost and generating a charge/discharge scheduling table based on the determined charge/discharge time period.

In an embodiment, the method may further include updating the charge/discharge scheduling table based on a result of performing the charge/discharge.

In an embodiment, the charge/discharge scheduling table includes a discharge scheduling table and a charge scheduling table, wherein the discharge scheduling table indicates a discharge rate field indicating a discharge rate for each time zone, a time zone to operate in a discharge mode, and a discharge start time zone. It includes at least one of a discharge mode field, a discharge flag field indicating whether actual discharge was performed in the corresponding time zone, and a deposit status field indicating whether the cost deposit has been completed for the discharge performed in the corresponding time zone, and the charging scheduling table. is a charging rate field indicating the charging rate for each time zone, a charging mode field indicating the time zone to operate in charging mode and the charging start time zone, a charging flag field indicating whether actual discharge was performed at that time zone, and a charging flag field indicating whether discharging was actually performed at that time zone. It may include at least one of the withdrawal status fields indicating whether the withdrawal of the cost for recharge has been completed.

In an embodiment, the charge/discharge schedule may be further determined based on at least one of a user-set future driving plan, a current driving route, a driving pattern of the electric drive vehicle, and a current battery charge state of the electric drive vehicle.

In an embodiment, the method further includes transmitting vehicle state information to a server through a network, wherein the driving pattern is analyzed by the server through prior learning of the vehicle state information and then transmitted to the electric drive vehicle. .

In an embodiment, the step of determining the charge/discharge schedule includes determining a discharge time period in which the maximum discharge charge is generated based on the charge/discharge rate policy and a minimum charge charge is generated based on the charge/discharge rate policy. It may include determining a charging time period.

In an embodiment, the charge/discharge rate policy corresponding to the region code may be dynamically updated based on power consumption statistical information for each time zone on a quarter/month/week/day basis in the region.

A non-volatile computer readable device storing at least one computer program including instructions that, when executed by at least one processor according to another aspect of the present disclosure, cause the at least one processor to perform charging/discharging of an electric drive vehicle. In a storage medium, the operations include receiving information about a charge/discharge rate policy corresponding to an area code, determining a charge/discharge schedule based on the charge/discharge rate policy, and the determined charge/discharge schedule. It may include the step of performing charging/discharging with a charging station based on .

An electric drive vehicle according to another aspect of the present disclosure includes a battery, an electric vehicle charging controller that controls charging and discharging of the battery, and a charging/discharging device that charges or discharges the battery in conjunction with a charging station under the control of the electric vehicle charging controller. When the electric vehicle charging controller receives information about a charge/discharge rate policy corresponding to an area code, determines a charge/discharge schedule based on the charge/discharge rate policy, and determines the charge/discharge schedule according to the determined charge/discharge schedule. Based on this, charging/discharging can be performed with the charging station.

In an embodiment, the electric vehicle further includes a positioning system that measures the current location of the electric vehicle and a vehicle communication terminal that communicates with an external device through a network, and the electric vehicle charging controller communicates with the positioning system through the network. Information about the current location measured can be transmitted to a server, and information about a charge/discharge rate policy corresponding to the area code mapped to the measured current location can be received from the server.

In an embodiment, the electric vehicle charging controller establishes a communication channel with the charging station through the charging/discharging device, and performs mutual authentication and security procedures through the communication channel, based on the success of the mutual authentication and security procedures. The electric vehicle charging controller may receive information about a charge/discharge rate policy corresponding to the area code from the charging station through the communication channel.

In an embodiment, the electric vehicle charging controller predicts a charging/discharging time zone, determines a charging/discharging time zone that generates optimal cost based on the charging/discharging rate policy and the predicted charging/discharging time zone, and A charge/discharge scheduling table can be created based on the determined charge/discharge time zone.

In an embodiment, the electric vehicle charging controller may update the charging/discharging scheduling table based on the result of performing the charging/discharging.

In an embodiment, the charge/discharge scheduling table includes a discharge scheduling table and a charge scheduling table, wherein the discharge scheduling table indicates a discharge rate field indicating a discharge rate for each time zone, a time zone to operate in a discharge mode, and a discharge start time zone. It includes at least one of a discharge mode field, a discharge flag field indicating whether actual discharge was performed in the corresponding time zone, and a deposit status field indicating whether the cost deposit has been completed for the discharge performed in the corresponding time zone, and the charging scheduling table. is a charging rate field indicating the charging rate for each time zone, a charging mode field indicating the time zone to operate in charging mode and the charging start time zone, a charging flag field indicating whether actual discharge was performed at that time zone, and a charging flag field indicating whether discharging was actually performed at that time zone. It may include at least one of the withdrawal status fields indicating whether the withdrawal of the cost for recharge has been completed.

In an embodiment, the charge/discharge schedule may be further determined based on at least one of a user-set future driving plan, a current driving route, a driving pattern of the electric drive vehicle, and a current battery charge state of the electric drive vehicle.

In an embodiment, the electric vehicle charging controller transmits vehicle state information to a server through the network, and the driving pattern may be analyzed by the server through prior learning of the vehicle state information and then transmitted to the electric drive vehicle. there is.

In an embodiment, the electric vehicle charging controller determines a discharge time zone in which the maximum discharge charge is generated based on the charge/discharge rate policy, and determines a charging time zone in which the minimum charge charge occurs based on the charge/discharge rate policy to determine the optimal charging time. The charge/discharge schedule can be determined.

In an embodiment, the charge/discharge rate policy corresponding to the region code may be dynamically updated based on power consumption statistical information for each time zone on a quarter/month/week/day basis in the region.

In an embodiment, the charge/discharge device may include a wireless charge/discharge device that charges/discharges the battery by transmitting and receiving power wirelessly and a wired charge/discharge device that charges/discharges the battery by transmitting and receiving power by wire. there is.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

Various embodiments according to the present disclosure have the advantage of providing a charging/discharging method for an electric vehicle and devices and systems therefor.

In addition, various embodiments according to the present disclosure have the advantage of minimizing vehicle maintenance costs by performing charging/discharging scheduling optimized for the current location and driving path of the electric vehicle.

In addition, various embodiments according to the present disclosure can minimize charging costs by adaptively setting wired/wireless charging/discharging schedules for electric vehicles based on different charging/discharging rate policies by region/electric power provider/charging station. There are advantages to this.

In addition, various embodiments according to the present disclosure have the advantage of safely protecting the power system by dynamically correcting system parameters for each region/electric power operator/charging station according to the current location and/or driving plan of the electric vehicle.

In addition, various embodiments according to the present disclosure have the advantage of enabling stable power supply by minimizing load fluctuations in the power system by transmitting idle power charged in the battery of an electric vehicle back to the power system.

Additionally, various embodiments according to the present disclosure have the advantage of effectively solving the problem of battery deterioration due to frequent battery charging/discharging by providing optimal charging/discharging scheduling for electric vehicles.

In addition, various embodiments according to the present disclosure can automatically update and apply charge/discharge rates by predicting power demand by region/power business operator/charging station/time zone/in real time through big data-based prior learning, thereby increasing power demand. It has the advantage of being able to effectively disperse.

In addition, various effects that can be directly or indirectly identified through this document may be provided.

The drawings attached to this specification are intended to provide an understanding of the present invention, show various embodiments of the present invention, and together with the description of the specification, explain the principles of the present invention.
1 is a diagram for explaining the overall structure of a wireless power transmission system according to an embodiment.
Figure 2 is a diagram for explaining the overall system structure for charging/discharging an electric vehicle according to an embodiment of the present disclosure.
Figure 3 is a block diagram for explaining the structure of an electric drive vehicle according to an embodiment of the present disclosure.
Figure 4 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to an embodiment of the present disclosure.
Figure 5 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to an embodiment of the present disclosure.
Figure 6 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to another embodiment of the present disclosure.
Figure 7 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to an embodiment of the present disclosure.
Figure 8 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.
Figure 9 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.
Figure 10 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.
Figure 11 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to an area code according to an embodiment of the present disclosure.
Figure 12 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to a power provider code according to an embodiment of the present disclosure.
Figure 13 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to a charging station identification code according to an embodiment of the present disclosure.
FIG. 14 is a flowchart illustrating a charging/discharging scheduling method for an electric vehicle according to an embodiment of the present disclosure.
FIG. 15 is a flowchart illustrating a method of performing charging/discharging scheduling of an electric drive vehicle through interworking with a server according to an embodiment of the present disclosure.
FIG. 16 is a flowchart illustrating a method for charging/discharging an electric vehicle using navigation information according to an embodiment of the present disclosure.
Figure 17 is a flowchart for explaining a method of charging/discharging an electric drive vehicle upon border entry according to an embodiment of the present disclosure.

Hereinafter, some embodiments of the present invention will be described in detail through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

In various examples of this disclosure, “/” and “,” should be interpreted as indicating “and/or.” For example, “A/B” can mean “A and/or B.” Furthermore, “A, B” may mean “A and/or B.” Furthermore, “A/B/C” may mean “at least one of A, B and/or C.” Furthermore, “A, B, C” may mean “at least one of A, B and/or C.”

In various examples of this disclosure, “or” should be interpreted as indicating “and/or.” For example, “A or B” may include “only A,” “only B,” and/or “both A and B.” In other words, “or” should be interpreted as indicating “additionally or alternatively.”

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 17.

1 is a diagram for explaining the overall structure of a wireless power transmission system according to an embodiment.

Referring to FIG. 1, the wireless power transmission system 100 may largely include a supply device (10) and a charging device (electrically powered device) 20.

The supply device 10 converts AC (or DC) electrical energy supplied from the power supply network (30) into AC electrical energy required by the charging device 20, and then converts the converted AC electrical energy to a predetermined level. It can be transmitted to the charging device 20 through a wireless energy transmission method. Here, the wireless energy transmission method may include an electromagnetic induction method, an electromagnetic resonance method (or magnetic resonance method), a microwave method, and an RF wireless power transmission method. The electromagnetic induction method transfers energy using induced electromotive force generated using the magnetic induction phenomenon of alternating current power between the primary coil provided in the supply device 10 and the secondary coil provided in the charging device 20. am. On the other hand, in the electromagnetic resonance method, when the supply device 10 generates a magnetic field that oscillates at a specific resonance frequency through the primary coil provided, the charging device 20 induces a magnetic field in the secondary coil having the same resonance frequency. It is a method of transmitting energy through . The RF wireless power transmission method uses the transmitter's phased array antenna system to beamform the RF wireless power signal and transmit it to the receiver. Compared to the existing electromagnetic induction method or electromagnetic method, it has the advantage of enabling long-distance wireless charging up to a radius of several meters. There is.

The supply device 10 and the charging device 20 are interconnected through short-distance wireless communication and can exchange various information for wireless power transmission.

The charging device 20 rectifies the wireless power received from the supply device 10 and then converts it into a rechargeable energy storage system (RESS) or high voltage (HV) mounted within the device - that is, on-board. Rectified power can be supplied to the battery.

The supply device 10 according to the embodiment may be installed in a building, road, parking lot, charging hub, or vertiport located on land, in the air, on the water, or on the roof of a building as an infrastructure for takeoff and landing of urban air mobility. . When a wireless power transmission pad for wireless power transmission is mounted on the charging device 20, the charging device 20 can perform a function as a supply device, through which wireless charging and charging devices ( Wireless discharge from 20) to the supply device 10 may also be performed.

As an example, when the charging device 20 is equipped with a plurality of wireless power reception pads, the charging device 20 simultaneously receives wireless power from at least one other charging device 20 equipped with a wireless power transmission pad. You can charge the old battery.

As another example, when the charging device 20 is equipped with a plurality of wireless power transmission pads, the charging device 20 transmits wireless power to at least one other charging device 20 equipped with a wireless power reception pad to at least It is also possible to charge one other charging device 20. That is, if the charging device 20 is unable to move to the supply device 10 based on status information such as the current remaining battery capacity, charging between charging devices 20 may be performed in conjunction with other adjacent charging devices 20. It may be possible. As an example, the charging device that supplies wireless power and the charging device that receives wireless power may be dynamically determined based on the current battery charge amount of the charging device 20.

The charging device 20 according to the embodiment may be mounted on various means of transportation. As an example, the charging device 20 may be applied to electric vehicles, personal mobility, unmanned drones, urban air mobility, multimodal mobility (or hybrid air mobility) that operates on land and air, or land and sea, etc.

In the following embodiment, it will be described as an example that the charging device 20 is installed in urban air mobility.

The charging device 20 according to the embodiment may be mounted on the lower side of the urban air mobility, but this is only one embodiment, and may be mounted on the upper side, the front side, the rear side, and the left side of the urban air mobility according to the design of a person skilled in the art. /It can also be installed on one side of the right side.

The supply device 10 according to the embodiment may be interconnected with another supply device 10 through a wired or wireless communication system.

The charging device 20 according to the embodiment may be interoperable with other charging devices 20 through a wireless communication system. To this end, the charging device 20 can be connected to a wireless communication terminal (not shown) mounted on the electric drive vehicle through the internal communication network of the electric drive vehicle to exchange signals and information.

As an example, a wireless communication system may be a multiple access system that supports communication with multiple users by sharing available system resources (eg, bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA) systems. Division multiple access) system, MC-FDMA (multi carrier frequency division multiple access) system, etc., but is not limited thereto, Wi-Fi communication system, 4G LTE (Long Term Evolution) communication system. It may include a 5G NR (New Radio) communication system, a satellite communication system, and an IEEE 802.11p-based WAVE (Wireless Access for Vehicle Environment) communication system.

The charging device 20 according to the embodiment may be connected to at least one other supply device through wireless communication. As an example, the charging device 20 may be connected to a plurality of supply devices 10 at the same time, and in this case, fast charging may be performed by simultaneously receiving wireless power from the plurality of supply devices 10. As an example, based on wireless charging efficiency between charging device 20 and supply device 10, charging device 20 may dynamically determine at least one supply device 10 to receive power. As another example, based on the wireless charging efficiency between the charging device 20 and the supply device 10, the supply device 10 may dynamically determine and schedule at least one charging device 20 to transmit wireless power. there is.

In the above-described embodiment, it is explained that the supply device 10 and the charging device 20 to perform wireless charging are dynamically determined based on wireless charging efficiency, but this is only one embodiment, and the supply device 10 The supply device 10 and the charging device 20 to perform wireless charging may be dynamically determined by further considering the type and capability of ), the type and capability of the charging device 20, etc. As an example, the type and capability of the charging device 10 may be different depending on the type of means of transportation on which the charging device 10 is mounted, and the supply device 10 matching the corresponding charging device 10 accordingly. The type and capability may also be different.

The charging device 20 according to the embodiment may perform the function of a wireless power transmission relay (hereinafter referred to as a relay or relay node for convenience of explanation) that transmits the power received from the supply device 10 to another charging device. It may be possible. In this case, the charging device 20 may be equipped with both a wireless power receiver (or wireless power reception pad) for receiving wireless power and a wireless power transmitter (wireless power transmission pad) for transmitting wireless power. In an embodiment, the positions where the wireless power receiver and the wireless power transmitter are mounted in one urban air mobility may be different from each other, but this is only one embodiment, and the wireless power receiver and the wireless power transmitter are composed of one module. It may also be mounted in a specific location. As an example, a wireless power receiving pad for receiving power from the supply device 10 is installed on the lower side of the urban air mobility, and a wireless power receiving pad is installed on the upper side of the urban air mobility to receive wireless power from another urban air mobility or other urban air mobility. A wireless power transmission/reception pad for transmitting wireless power may be installed.

Through the above-described embodiments, urban air mobility equipped with the charging device 20 according to the present invention can not only charge its battery by receiving wireless power from the supply device 10, but also can charge its own battery while stationary (or during flight). ) can also transmit and receive wireless power through collaboration with other urban air mobility. For example, if the battery charge level during flight is not sufficient to fly to the nearest supply device 10 or the route is deviated due to abnormal weather, etc., the urban air mobility may send an emergency message to another nearby urban air mobility (or central control center). You can request air charging.

As an example, if emergency aerial charging is possible based on its own battery charging status, other nearby urban air mobility that has received a request for emergency aerial charging moves to the urban air mobility that requested emergency aerial charging and performs wireless charging through in-flight wireless charging. Power can be supplied.

In another example, the central control center (or UAM Air Operator) that has requested emergency aerial charging searches for other urban air mobility around the urban air mobility that has requested emergency aerial charging, and other discovered urban air mobility Based on the current battery charging state, it is possible to determine who will participate in emergency public charging. When a target to participate in emergency aerial charging is determined, the central control center transmits a predetermined control signal to the surrounding urban air mobility determined to participate in emergency aerial charging, guides it to the location of the urban air mobility that requested emergency aerial charging, and then wirelessly charges during flight. can be controlled to perform.

The charging device 20 may control at least one switch provided on the wireless power transmission pad and the wireless power reception pad to turn ON/OFF the operation of the corresponding wireless power transmission pad and/or the wireless power reception pad.

In the above embodiment, the charging device 20 receives wireless power from one supply device 10 as an example, but this is only one embodiment, and the charging device 20 receives wireless power from a single supply device 10. A receiving pad may be provided to simultaneously receive wireless power from a plurality of supply devices 10 to perform high-speed charging.

In another embodiment, the charging device 20 may further include a wired charging means as well as a wireless charging means. In this case, high-speed charging may be performed using at least one of the wireless charging means and the wired charging means.

According to an embodiment, the charging device 20 of the first urban air mobility divides the wireless power received from the supply device 10 through negotiation with the charging device 20 provided in the second urban air mobility to provide the second urban air mobility. It can also be transmitted to mobility. As an example, the amount of power charged by the first urban air mobility and the second urban air mobility may be dynamically determined based on the battery charge state of each urban air mobility. As another example, the amount of power charged by the first urban air mobility and the second urban air mobility may be dynamically determined based on the flight reservation status as well as the battery charge state of each of the first urban air mobility and the second urban air mobility. there is. In other words, the longer the reserved flight distance corresponding to each urban air mobility, the more power consumption is expected, so power distribution needs to take more into consideration flight plan, flight distance, etc.

The charging device 20 according to an embodiment may determine whether power relay to other urban air mobility is possible based on the battery charging state of its RESS 40. As an example, when the battery charge level (or battery output voltage) of the first urban air mobility is higher than a predetermined reference value, the charging device 20 of the first urban air mobility transfers the power received from the supply device 10 to the second urban air mobility. It can be transmitted to the mobility charging device 20. On the other hand, when the battery charge level (or battery output voltage) of the first urban air mobility is less than a predetermined reference value, the charging device 20 of the first urban air mobility transmits the power received from the supply device 10 to the second urban air mobility. It can be controlled to be used only for charging its own RESS (40) without being relayed to the charging device (20).

The communication terminal mounted on urban air mobility can be connected to the supply device 10, other urban air mobility, and the central control center through V2X (Vehicle to Everything) communication supported by 4G LTE/5G NR communication to exchange various information. there is.

Urban air mobility is equipped with a Global Positioning System (GPS) receiver and can receive and decode GPS satellite signals. Urban air mobility may obtain current GPS coordinate information from GPS satellite signals and provide it to the supply device 10 and/or other urban air mobility through a communication terminal. Of course, the communication terminal mounted on the urban air mobility may acquire GPS coordinate information of the supply device 10 and/or other urban air mobility.

V2X refers to a communication technology that exchanges information with other vehicles, pedestrians, and objects with built infrastructure through wired/wireless communication. V2X refers to V2V (vehicle-to-vehicle) for communication between vehicles, V2I (vehicle-to-infrastructure) for communication between vehicles and infrastructure, and V2N (vehicle-to-network) for communication between vehicles and communication networks. and V2P (vehicle-to-pedestrian) for communication between vehicles and pedestrians. V2X communication may be provided through the PC5 interface and/or the Uu interface.

Sidelink (SL) refers to establishing a direct wireless link between communication terminals mounted on urban air mobility, enabling access to the city without going through a base station (BS) or infrastructure - for example, a Road Side Unit (RSU). It refers to a communication method that allows information to be exchanged directly between air mobility. SL can be considered as a method that can not only alleviate the burden on the base station due to rapidly increasing data traffic, but also minimize transmission delay when communicating between urban air mobility.

Figure 2 is a diagram for explaining the overall system structure for charging/discharging an electric vehicle according to an embodiment of the present disclosure.

Smart grid is a next-generation power grid that combines information technology (IT) with the power grid to allow power suppliers and consumers to exchange real-time information in both directions, optimize energy efficiency, and create new added value. Accordingly, through two-way power information exchange, reasonable energy consumption can be induced and high-quality energy and various additional services can be provided. In addition to the integration of clean, green technologies such as new and renewable energy, electric vehicles are attracting attention as an important element in implementing a smart grid.

Electrically driven vehicles can implement V2G (Vehicle-to-Grid) by transmitting power back through the application of OBC (On-Board Charger). In V2G, an electric vehicle is viewed as a consumer entity that receives and consumes power, and as a supply entity that can provide power stored in the battery to other entities as a distributed power source.

For example, during the night when electricity demand is low, electric energy is supplied to electric vehicles to charge the batteries, and during peak hours during the day when electricity demand is high, the battery power charged in electric vehicles is transmitted back to the power grid to resell electricity. It is possible.

Introducing this concept can alleviate power loads during peak hours and create new revenue models for owners of electric vehicles and power companies.

Hereinafter, for convenience of explanation, the entire system for charging and discharging an electric vehicle will be briefly described as a V2G system (Vehicle-to-Grid system).

Referring to FIG. 2, the V2G system 200 is largely divided into a power provider (Power Grid, 210), a factory and/or in-house power system (220), a charging station operating server (CSO (Charging Station Operating) system, 230), and a smart It may be composed of a combination of at least one of a wired and wireless charging station 240, an electric drive vehicle 250, and a network 260.

At least two of the smart wired and wireless charging station 240, charging system operation server 230, electric drive vehicle 250, power business operator 210, and factory or in-house power system 220 share mutual information through the network 260. can be exchanged.

As an example, the network 260 may include a wireless network as well as a wired network. For example, the wireless network includes a 3GPP (3 ^rd Generation Partnership Project) LTE (Long Term Evolution)-based V2X (Vehicle to Everything) communication network, a 3GPP 5G NR (New Radio)-based V2X communication network, and IEEE 802.11p-based WAVE (Wireless). It may be configured to include at least one of an Access for Vehicle Environment) communication network and a Wi-Fi communication network.

The smart wired and wireless charging station 240 includes a smart meter (241), an energy storage system (ESS), 242, a supply equipment communication controller (SECC), 243, and a charge/discharge system. It may be composed of a combination of at least one of a grid and rate database 244, a wireless communication device 245, and an electric vehicle supply equipment (EVSE) 246. Here, the EVSE 246 is a wired charging/discharging device 247 that charges or discharges the high-voltage battery of the electric drive vehicle 250 by transmitting or receiving power by wire through a charging cable, and an electromagnetic induction or electromagnetic resonance method, etc. It may be configured to include a wireless charging/discharging device 248 that transmits or receives wireless power to charge or discharge a high-voltage battery provided in the electric drive vehicle 250.

The electric drive vehicle 250 includes a charging/discharging device 252 that transmits or receives wired power or wireless power through power negotiation with the electric vehicle supply device 246, and a wireless communication device 245 of the smart wired and wireless charging station 240. , It may be configured to include a charging system operation server 230 and a vehicle communication terminal 251 for communicating with other vehicles.

As an example, power line communication (PLC) may be used for wired charging/discharging between the electric vehicle supply device 246 and the charging/discharging device 252, and in-band communication (In-band communication) may be used for wireless charging/discharging. At least one of short-distance wireless communication may be used: -band Communication, Zigbee Communication, and Bluetooth Communication.

The charge/discharge system/rate database 244 may maintain information on system parameters and charge/discharge rate policies corresponding to the smart wired/wireless charging station 240.

The smart wired and wireless charging station 240 according to the embodiment may provide the electric drive vehicle 250 with information about its area code (or country code) and system parameters and charge/discharge rate policy corresponding to the area code. there is. The electric drive vehicle 250 may determine and set various power control parameters for charging or discharging based on the received system parameters, and determine and set a charging/discharging schedule based on the charging/discharging rate policy. Here, the system parameters may include at least one of active power value, reactive power value, active current/voltage value, reactive current/voltage value, etc., parameters related to operating frequency, system fault information, and various legal requirements. It is not limited to this, and other system parameters may be added or some system parameters may be deleted according to the design of a person skilled in the art.

The electric drive vehicle 250 according to the embodiment measures the active power value based on the power signal received after the start of discharging or charging, and compares the actual measured active power value with the received active power parameter to determine the actual power value to protect the power system. It can be corrected by calculating the active power value to be applied.

The electric drive vehicle 250 according to the embodiment measures the operating frequency value based on the power signal received after the start of discharging or charging, and compares the actually measured operating frequency value with the received frequency parameter to actually apply it to protect the power system. The operating frequency value may be calculated and/or corrected.

The electric drive vehicle 250 may perform discharging or charging based on the corrected active power value and the operating frequency correction value.

Information about system parameters and charge/discharge rate policies according to the embodiment may be transmitted to the electric drive vehicle 250 through the wireless communication device 245 under the control of the supply device communication controller 243, but this is one This is only an example, and information on system parameters and charge/discharge rate policies according to other embodiments is provided through power line communication or short-range wireless communication through the electric vehicle supply device 246 under the control of the supply device communication controller 243. It may also be transmitted to the electric drive vehicle 250.

Information stored in the charging/discharging system/rate database 244 may be dynamically updated by the charging system operation server 230.

In another embodiment, information about system parameters and charge/discharge rate policies is provided by the charging system operation server 230 to the electric drive vehicle 250 at the request of the electric drive vehicle 250 or the smart wired/wireless charging station 240. You can also provide it.

As an example, the electric drive vehicle 250 requests information about system parameters and charge/discharge rate policies corresponding to its current location or its driving path to the charging system operation server 230, and sends the charging system operation server (230) to the charging system operation server (230). 230) may provide the electric drive vehicle 250 with information about system parameters and charge/discharge rate policies corresponding to the request of the electric drive vehicle 250.

As an example, the electric drive vehicle 250 may transmit driving information regarding travel distance, travel time, energy consumption per unit distance and/or unit time, driving schedule, etc. to the charging system operation server 230. In this case, the charging system operation server 230 may generate and maintain driving statistical data on a daily/week/month/quarter/season/year basis based on driving information received from the electric drive vehicle 250. In an embodiment, the charging system operation server 230 may provide driving statistics data for the electric drive vehicle 250 to the electric drive vehicle 250 . The electric drive vehicle 250 performs optimal charging/discharging scheduling based on charging/discharging rate policy information and driving statistics data based on the area code and/or electric utility code and/or charging station identification code corresponding to its current location. It can be done. In another embodiment, the charging system operation server 230 may obtain information about the current location and/or future driving schedule of the electric drive vehicle 250. In this case, the charging system operation server 230 establishes an optimal charging/discharging schedule for the electric drive vehicle 250 based on previously generated driving statistical data and information about the acquired current location and/or future driving schedule. A decision may be made, and information on the determined charge/discharge schedule may be transmitted to the corresponding electric drive vehicle 250.

In the above embodiment, it is explained that the charge/discharge schedule is determined by the charging system operation server 230 or the electric drive vehicle 250, but this is only one embodiment, and the charge/discharge schedule according to another embodiment can also be determined through a separate cloud server connected to the network. Through this, the processing load for charging/discharging scheduling of the charging system operation server 230 and/or the electric drive vehicle 250 can be efficiently distributed.

The smart meter 241 can measure the amount of power received from the power provider 210 or the factory or in-house power system 220 when charging the battery of the energy storage system 242.

In addition, the smart meter 241 can measure the amount of power transmitted to the power company 210 or the factory or home power system 220 to discharge the battery of the energy storage system 242.

The smart meter 241 calculates the difference between the measured charge and discharge amounts for each power company/factory power system/in-house power system, and provides information about the calculated difference to the charging system operation server 230. . In this case, the charging system operation server 230 generates billing information on a daily/weekly/monthly/quarterly/yearly basis based on the information received from the smart meter 241, and sends the generated billing information to the corresponding electric power business operator (210). ) can be transmitted to a terminal linked to the terminal and/or a terminal linked to the factory or in-house power system 220.

The electric drive vehicle 250 according to the embodiment may perform discharge scheduling by dynamically determining a discharge time zone in which the maximum discharge charge occurs based on rate policy information corresponding to the corresponding area code.

Additionally, the electric vehicle 250 according to the embodiment may perform charging scheduling by dynamically determining a charging time zone in which the minimum charging fee occurs based on rate policy information corresponding to the corresponding area code.

While stopped or driving, the electric drive vehicle 250 may automatically perform charging or discharging at the corresponding time based on the scheduling result.

The electric vehicle 250 according to the embodiment can perform charging/discharging not only while stopped, but also while driving. For example, when a power transmission/reception device capable of wireless power transmission/reception is buried on the road, the electric drive vehicle 250 may perform charging/discharging while driving according to the determined charging/discharging schedule information.

To this end, the V2G system 200 according to an embodiment of the present disclosure can be implemented to enable charging/discharging while driving as well as charging/discharging while stopped.

As an example, the V2G system 200 may be implemented to enable charging/discharging by either wired charging/discharging or wireless charging/discharging while the vehicle is stopped, and may be implemented so that only wireless charging/discharging can be performed while driving. there is. To this end, the smart wired and wireless charging station 240 can monitor the current driving state of the electric vehicle 250 and adaptively determine which charge/discharge mode to operate based on the current driving state monitoring result. Here, the charge/discharge mode can be largely divided into a wired charge/discharge mode and a wireless charge/discharge mode. If both the wired charge/discharge mode and the wireless charge/discharge mode are applicable, the smart wired and wireless charging station 240 can be implemented to measure and compare the charging efficiency of the two modes and operate in a mode with better charging efficiency. there is. Of course, the smart wired and wireless charging station 240 may be implemented to enable simultaneous charging/discharging of a plurality of electric vehicles 250, and in this case, the currently available charging/discharging mode may be determined.

The electric vehicle 250 according to the embodiment may obtain information about the rate policy for each electric power provider from the charging system operation server 230 or the smart wired and wireless charging station 240. In this case, the electric drive vehicle 250 can dynamically determine with which power provider to perform charging/discharging based on the rate policy of each power provider, and perform charging/discharging scheduling based on the determined rate policy of the power provider. You can.

As an example, the electric drive vehicle 250 may analyze and compare the charge/discharge rate policies of each power provider and adaptively select the power provider that generates the maximum discharging cost and the minimum charging cost.

The electric drive vehicle 250 according to the embodiment may receive information about the charging/discharging rate policy for each area code and/or power provider code corresponding to the current driving route set in the navigation from the charging system operation server 230. . In this case, the electric drive vehicle 250 selects the area code and/or power provider code where the maximum discharging cost and minimum charging cost occur on the current driving route, and charges/delivers corresponding to the selected area code and/or power provider code. Charge/discharge scheduling can also be performed dynamically based on the discharge rate policy.

The electric drive vehicle 250 according to the embodiment transmits information about the current location and/or current driving path of the vehicle to the charging system operation server 230 to charge smart wired and wireless devices placed on the current location and/or current driving path. Information about the location of the station 240 can be obtained.

In another embodiment, when the map information of the navigation system provided in the electric drive vehicle 250 maintains the location information of the smart wired and wireless charging station and the charge/discharge rate information for each smart wired and wireless charging station, the electric drive vehicle 250 Charge/discharge scheduling can also be performed based on navigation information.

Figure 3 is a block diagram for explaining the structure of an electric drive vehicle according to an embodiment of the present disclosure.

Referring to FIG. 3, the electric vehicle 250 includes a vehicle sensor 310, a Global Navigation Satellite System (GNSS) 320, a navigation system 330, and an Electric Vehicle Charging Controller (EVCC). ), 340), a charging/discharging device 360, and a Rechargeable Energy Storage Systems (RESS) or a High Voltage Battery (380).

The vehicle sensor 310 may be configured to include at least one of a camera, an ultrasonic sensor, a Smart Parking Assistance System (SPAS) sensor, radar, and Light Detection and Ranging (RiDAR). For example, the camera may be a front camera. , may include at least one of a rear camera, left/right side cameras, an upper camera, and a lower camera. For example, the camera may include at least one of a SVM (Surround View Monitor) camera, an RGB camera, and an infrared camera. You can.

In addition to the GPS receiver connected to the navigation system 330, the GNSS (320) uses DGPS (Differential Global Positioning System) or RTK (Real Time Kinematic) technology to fuse information received from a separate fixed reference station with GPS reception information. By correcting the location information - that is, GSP (X, Y) coordinate information - it is possible to obtain location information with higher precision at the centimeter level. In addition, the electric vehicle 250 - for example, the electric vehicle charging controller 340 - can alleviate errors occurring in DGPS (Differential Global Positioning System) or RTK (Real Time Kinematic) technology using a software method, By fusing sensing information from inertial navigation sensors such as accelerometers and gyroscopes, location information of the electric drive vehicle 250 with higher precision can be obtained. As another example, the electric vehicle 250 - for example, the electric vehicle charging controller 340 - uses a precision electronic map such as LDM (Local Dynamic Map), which provides dynamic map information, with camera images and lidar sensors. The accuracy of positioning can also be improved by correcting GNSS reception information using a map matching method that maps detected roads and landmarks to locations on the map.

The navigation system 330 can provide location information of a smart wired and wireless charging station mapped to high-precision map information and charge/discharge rate information of the smart wired and wireless charging station.

The electric vehicle charging controller 340 can control communication and overall operation for wired and wireless charging/discharging with the electric vehicle 250. In an embodiment, the electric vehicle charging controller 340 provides ISO/IEC 15118 V2GCI (Vehicle to Grid Communication Interface) and can perform authentication and security procedures for the electric vehicle 250.

The EVCC 340 of the electric drive vehicle 250 and the SECC 243 of the smart wired and wireless charging station 240 may establish an encrypted communication session using a Transport Layer Security (TLS) handshake.

During the TLS handshake, the smart wired and wireless charging station 240 may provide the electric drive vehicle 250 with a set of digital certificates - for example, a SECC certificate - to identify itself as a trusted charging station. The electric drive vehicle 250 can then check the digital signatures of all certificates, including the SECC certificate, and check whether the certificate has expired. If all certificates are verified without problems, the TLS session can be established successfully.

Electrically driven vehicle 250 can use contract certificates for seamless authentication and authorization. Here, the contract certificate may be issued by the charging system operation server 230, but this is only an example, and may be issued through the server of another electric vehicle service provider (e-mobility service provider, EMSP).

As an example, a newly issued contract certificate may be transmitted to the corresponding electric vehicle 250 through the smart wired or wireless charging station 240. Messages directly exchanged between the electric drive vehicle 250 and the smart wired and wireless charging station 240, such as a certificate installation request and a certificate installation response message for installing a new contract certificate in the electric drive vehicle 250, can be defined. .

The electric drive vehicle 250 receives wired/wireless power from the smart wired and wireless charging station 240 to charge its RESS 380 or uses the power charged in its RESS 380 to charge the smart wired and wireless charging station 240. Before discharging, information on a valid contract certificate to obtain approval for charging/discharging can be transmitted to the smart wired and wireless charging station 240. Here, the contract certificate may be linked to the billing account managed by the charging system operation server 230 through a unique identifier called an E-Mobility Account Identifier (EMAID).

As an example, the charging system operation server 230 calculates the charging/discharging fee for the electric drive vehicle 250 according to the applicable rate policy, reflects the calculation result in the corresponding billing account, and then charges the electric drive vehicle 250 or the electric drive. It can be transmitted to a user terminal (not shown) linked to the vehicle 250. As another example, the smart wired and wireless charging station 240 calculates the charge/discharge fee for the electric drive vehicle 250 according to the applicable rate policy, and transmits the calculation result directly to the electric drive vehicle 250, or operates the charging system. By transmitting the calculation result to the server 230, the charging system operation server 230 can be controlled to transmit processing information about the charging/discharging fee to the electric drive vehicle 250.

According to the embodiment, the electric vehicle charging controller 340 may exchange various information by communicating with the charging system operation server 230 through the network 260. As an example, the electric vehicle charging controller 340 may include at least one of area code information, power provider code information, and smart wired/wireless charging station identification code information corresponding to the current location and/or currently set driving route of the electric vehicle 250. Charge/discharge rate policy information corresponding to at least one code can be obtained by requesting the charging system operation server 230. In this case, the electric vehicle charging controller 340 selects the area code and/or power provider code and/or smart wired/wireless charging station identification code that generates the maximum discharge cost and minimum charge cost in the current location and/or current driving route, Charging/discharging scheduling may be performed based on a charging/discharging rate policy corresponding to the selected area code and/or power provider code and/or smart wired/wireless charging station identification code.

According to another embodiment, the electric vehicle charging controller 340 may obtain charge/discharge system parameter information and charge/discharge rate policy information corresponding to the smart wired/wireless charging station 240 from the smart wired/wireless charging station 240. . In this case, the electric vehicle charging controller 340 may calculate and correct at least one of the optimal operating frequency, optimal active power value, and optimal reactive power value for charging/discharging based on charging/discharging system parameter information. . Additionally, the electric vehicle charging controller 340 can optimize charge/discharge scheduling based on the charge/discharge rate policy corresponding to the smart wired/wireless charging station 240.

The electric vehicle charging controller 340 according to the embodiment identifies the current detailed location of the own vehicle based on the sensing information and navigation map information collected from the GNSS 320, and determines whether the own vehicle has entered the front border based on the identified current detailed location. can be judged. As a result of the determination, in the case of forward border entry, the electric vehicle charging controller 340 sets the area code corresponding to the entry country immediately after crossing the border (or immediately before crossing the border) and the system parameters and/or charge/discharge rate corresponding to the area code. The policy can also be automatically updated in conjunction with the charging system operation server 230.

The electric vehicle charging controller 340 according to the embodiment determines whether to enter the border based on the current position measured while the vehicle is driving, and the power provider code immediately before crossing the border (or immediately after crossing the border) and the system corresponding to the power provider code. Parameters and/or charge/discharge rate policies may be automatically updated in conjunction with the charging system operation server 230.

The electric vehicle charging controller 340 according to the embodiment updates the area code and the charge/discharge rate policy and system parameters corresponding to the area code based on user input information on the navigation system 330 (or a pre-designated user terminal). You may. Here, the user input information may include information on the country (or region) with which charging/discharging is preferred.

The electric vehicle charging controller 340 according to the embodiment sets the power provider code and the charge/discharge rate policy and system parameters corresponding to the power provider code based on user input information on the navigation system 330 (or a pre-designated user terminal). can also be updated. Here, the user input information may include information about the power provider that prefers charging/discharging.

The electric vehicle charging controller 340 according to the embodiment is based on user input information on the navigation system 330 (or a pre-designated user terminal) and generates a smart wired/wireless charging station identification code and a charge/wireless charging station corresponding to the smart wired/wireless charging station identification code. Discharge rate policies and/or grid parameters may be updated. Here, the user input information may include information about the smart wired/wireless charging station that prefers charging/discharging.

In an embodiment, the electric vehicle charging controller 340 updates and stores the operating frequency and active power values for charging/discharging based on system parameters updated according to user input, and then, upon actual charging/discharging, the actually measured operating frequency and By comparing the active power value with the previously stored operating frequency and active power value, the optimal operating frequency and active power value for system protection can be calculated and corrected.

In an embodiment, the electric vehicle charging controller 340 may be equipped with pre-trained artificial intelligence for charge/discharge scheduling and perform optimal charge/discharge scheduling based on a charge/discharge rate policy updated according to user input. It may be possible. Here, the charge/discharge scheduling may include information on the optimal discharging time zone and information on the optimal charging time zone, and the electric vehicle charging controller 340 uses learned logic to generate the maximum discharging cost and the minimum charging cost. Accordingly, charge/discharge scheduling can be performed.

The charge/discharge device 360 may be configured to include at least one of a wireless charge/discharge device 361 and a wired charge/discharge device 366.

The wireless charging/discharging device 361 may include a first control communication unit 362, a first power change unit 363, a wireless power transmitting unit 364, and a wireless power receiving unit 365.

The first control communication unit 362 can perform communication for wireless charging/discharging with the smart wired/wireless charging station 240 and control operations for the lower module.

The first control communication unit 362 can perform operations such as mutual authentication, power negotiation, and power control with the smart wired and wireless charging station 240 through in-band communication or out-of-band communication. In an embodiment, the first control communication unit 362 may set system parameter values - for example, operating frequency, active power value, reactive power value, etc. - according to the control signal from the electric vehicle charging controller 340.

The first power conversion unit 363 can control the inverter provided according to the control of the first control communication unit 362 to convert the direct current power discharged from the RESS 380 into alternating current power and transmit it to the wireless power transmitter 364. there is.

The wireless power transmission unit 364 can convert the AC power applied from the first power conversion unit 363 into a specific operating frequency through a provided LC circuit and output it wirelessly.

The wireless power receiver 365 may receive the AC power signal received from the smart wired and wireless charging station 240, rectify it, and then transmit it to the first power conversion unit 363.

The first power conversion unit 363 can charge the RESS 380 by receiving rectified power from the wireless power receiver 365 and converting it into direct current power required for charging the RESS 380.

The wired charging/discharging device 366 may include a second control communication unit 367, a second power conversion unit 368, a wired discharging unit 369, and a wired charging unit 370.

The second control communication unit 367 may perform communication for wired charging/discharging with the smart wired/wireless charging station 240 and control operations for the lower module.

The second control communication unit 367 can perform operations such as mutual authentication, power negotiation, and power control with the smart wired and wireless charging station 240 through wired communication - for example, PLC. In an embodiment, the second control communication unit 367 may set system parameter values - for example, operating frequency, active power value and reactive power value according to the operating frequency - according to the control signal from the electric vehicle charging controller 340. .

The second power conversion unit 368 converts the direct current or alternating current power applied from the RESS 380 under the control of the second control communication unit 367 into the direct current or alternating current power required by the smart wired and wireless charging station 240. You can. At this time, the converted power can be transmitted to the wired charging/discharging device 247 of the smart wired and wireless charging station 240 through the wired discharge plug 369.

The second power conversion unit 368 receives alternating current or direct current power from the wired charging/discharging device 247 of the smart wired and wireless charging station 240 through the wired charging inlet 370, and converts the received alternating current or direct current power into RESS. RESS (380) can be charged by converting it into alternating current or direct current power as required by (380).

The electric vehicle charging controller 340 connects the smart wired and wireless charging station 240, the charging system operation server 230, the power provider 210, the factory or in-house power system 220, and the user terminal (Mido) through the vehicle communication terminal 350. can be wirelessly connected to at least one of the city and exchange information.

As an example, in an area such as Europe, where multiple countries border borders and movement between countries is free, the electric vehicle charging controller 340 uses GNSS 320 information and/or a navigation system ( 330), you can automatically update your current location (or the address corresponding to the current location) or update your current location (or the address corresponding to the current location) based on user input information. When approaching a border, the electric vehicle charging controller 340 may generate and output a predetermined notification message informing the user that the border is approaching.

In another embodiment, the electric vehicle charging controller 340 determines a location (or If an error occurs because the address) information is different, after user confirmation, the user's current location (or address) is returned to the location (or address) identified based on the GNSS (320) information and/or information provided by the navigation system (330). can also be automatically determined.

As described above, the electric drive device 250 according to the present disclosure uses area codes and/or power provider codes for charging/discharging and/or smart wired/wireless devices according to the current location and/or current driving path and/or user input. Optimal system parameters for system protection by dynamically acquiring information about system parameters and/or charge/discharge rate policy corresponding to the charging station identification code through the network 260 and/or the smart wired/wireless charging station 240. It has the advantage of not only being able to set , but also performing cost-optimized charge/discharge scheduling.

Figure 4 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to an embodiment of the present disclosure.

In detail, FIG. 4 is a flowchart illustrating a method of setting system parameters for charging/discharging in the electric drive vehicle 250.

Referring to FIG. 4, the electric drive vehicle 250 may receive information about system parameters (S420). Here, the system parameters include identification code information, information about the operating frequency corresponding to the corresponding identification code, information about the active power corresponding to the corresponding identification code, information about the reactive power corresponding to the corresponding identification code, and information corresponding to the corresponding identification code. It may include at least one of the following legal information. As an example, the identification code information may include at least one of an area code to identify the country and/or administrative district, a power provider code to identify the power provider, and a charging station identification code to identify the charging station (or a smart wired/wireless charging station code). You can.

The electric drive vehicle 250 may correct predefined system parameter values based on a signal received from the smart wired/wireless charging station 240 - for example, a predetermined reference power signal (S420). Here, the system parameter values to be corrected may include an operating frequency value and an active power value for protecting the power system, but are not limited thereto and may further include a reactive power value, etc.

The electric drive vehicle 250 may perform charging/discharging based on system parameters corrected according to a preset charging/discharging schedule (S430).

Figure 5 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to an embodiment of the present disclosure.

In detail, FIG. 5 is a flowchart for explaining a method of setting an active power value for charging/discharging in an electric drive vehicle 250.

Referring to FIG. 5, the electric vehicle 250 can be connected to the smart wired and wireless charging station 240 (S510). Here, the communication method between the electric drive vehicle 250 and the smart wired and wireless charging station 240 may be wireless communication, but this is only one embodiment, and wired communication such as PLC may also be used.

The electric drive vehicle 250 may receive information about system parameters corresponding to the area code (S520). Here, the system parameters may include information about the operating frequency for power charging/discharging and information about the active power value, but are not limited thereto. In an embodiment, the operating frequency may include at least one of an operating frequency for wireless charging/discharging and an operating frequency for wired charging/discharging. Additionally, the active power value may include at least one of an active power value for wireless charging/discharging and an active power value for wired charging/discharging.

The electric drive vehicle 250 may measure the operating frequency based on a power signal - for example, a predetermined reference power signal - received from the smart wired and wireless charging station 240 (S530).

The electric drive vehicle 250 may be corrected by comparing the received operating frequency value and the measured operating frequency value to protect the power system (S540). As an example, the electric drive vehicle 250 determines the measured frequency value as a valid operating frequency if at least two of the frequency values measured for the AC three-phase input - that is, the L1 frequency value, the L2 frequency value, and the L2 frequency value - match. It can be determined by value. The electric drive vehicle 250 may compare the effectively measured operating frequency value and the received operating frequency value and determine one of the two as the final operating frequency value. As an example, the electric drive vehicle 250 may determine and correct the smaller frequency value among the effectively measured operating frequency value and the received operating frequency value as the final operating frequency value for system protection. For example, if the operating frequency value included in the system parameter and received is 49.5 Hz and the operating frequency value measured by the OBC of the electric drive vehicle 250 is 50 Hz, 49.5 Hz, which is a low value for system protection purposes, is the final operating frequency value. can be decided. If a valid operating frequency is not measured, the electric drive vehicle 250 may determine the received operating frequency value as the final operating frequency value.

The electric drive vehicle 250 may calculate the active power value corresponding to the corrected operating frequency based on a predefined operating frequency/active power value mapping table or equation (S550). As an example, the active power value may be calculated as 0.3 times the maximum transmission power (PMAX), but this is only one embodiment, and the active power calculation method for each region/electric power operator/smart wired/wireless charging station may be defined differently. there is.

The electric drive vehicle 250 may measure the active power value based on a power signal - for example, a predetermined reference power signal - received from the smart wired and wireless charging station 240 (S560).

The electric drive vehicle 250 may correct the active power value by comparing the calculated active power value and the measured active power value for system protection (S570). As an example, when the measured active power value is less than the calculated active power value, the electric drive vehicle 250 negotiates power with the smart wired and wireless charging station 240 so that the measured active power value is greater than or equal to the calculated active power value. The active power value can be corrected by performing:

When correcting the active power value is successful, the electric drive vehicle 250 may perform charging/discharging according to predetermined charging/discharging scheduling.

Figure 6 is a flowchart for explaining a charging/discharging method in an electric drive vehicle according to another embodiment of the present disclosure.

In detail, FIG. 6 is a flowchart illustrating a method of performing charge/discharge scheduling based on an area code in the electric vehicle 250.

Referring to FIG. 6, the electric drive vehicle 250 may receive information about the charge/discharge rate policy through wired or wireless communication (S610). Here, information regarding the charge/discharge rate policy may be received through communication with the smart wired/wireless charging station 240, but this is only one embodiment, and the charging system may be installed upon a separate request from the electric drive vehicle 250. It may be updated by receiving it from the operation server 230 or by automatically transmitting it to the charging system operation server 230 based on the current location of the electric drive vehicle 250. Here, information about the charge/discharge rate policy may include information about charge and discharge rates by time period. In addition, the charge/discharge rate policy may be predefined in units of area codes, but this is only one embodiment, and may be defined in units of power provider codes and/or smart wired and wireless charging stations according to the design of those skilled in the art.

The electric drive vehicle 250 may determine its own charge/discharge schedule based on information about the charge/discharge rate policy (S620). As an example, the charge/discharge schedule is set to generate the maximum discharge cost and minimum charge cost. can be decided.

The electric drive vehicle 250 can perform charging or discharging by automatically controlling the On-Board Charger (OBC) according to the determined charging/discharging schedule (S630).

In an embodiment, the electric vehicle 250 may receive account deposit/withdrawal information according to charging/discharging from the charging system operation server 230 or the smart wired/wireless charging station 240 (S640). The user can check the account deposit/withdrawal status in real time through a predetermined user interface screen provided on the electric drive vehicle 250. Of course, account deposit/withdrawal information according to charging/discharging may be transmitted to a preset user terminal (not shown) linked to the electric drive vehicle 250.

In the above embodiment of FIG. 6, it is explained that charging/discharging scheduling of the electric drive vehicle 250 is performed based on the charging/discharging rate policy corresponding to the area code. However, this is only one embodiment, and the power provider code Charging/discharging scheduling of the electric drive vehicle 250 is performed based on a charge/discharge rate policy corresponding to or charging/discharging of the electric drive vehicle 250 is performed based on a charge/discharge rate policy corresponding to the smart wired/wireless charging station identification code. Discharge scheduling may be performed.

In another embodiment, charging/discharging scheduling of the electric drive vehicle 250 may be performed based on a charging/discharging rate policy corresponding to at least one of the area code, power provider code, and smart wired/wireless charging station identification code according to user settings. It may be possible.

In another embodiment, charging/discharging scheduling of the electric drive vehicle 250 may be performed based not only on the above-described charge/discharge rate policy but also based on driving statistical information collected for the electric drive vehicle 250.

In another embodiment, charging/discharging scheduling of the electric drive vehicle 250 may be performed based on at least one of the above-described charging/discharging rate policy and driving statistics information as well as a future driving plan input by the user.

In another embodiment, the charging/discharging scheduling of the electric drive vehicle 250 is estimated based on at least one of the above-described charging/discharging rate policy, driving statistical information, and future driving plan, as well as big data and a predetermined power acceptance prediction algorithm. It may also be performed further based on power demand forecast information. As an example, big data may include information on total power consumption and power production by date/region/time zone/weather/temperature. For example, the discharge rate may increase based on the amount (or ratio) by which power consumption exceeds power production, and the discharge rate may decrease based on the amount (or ratio) by which power consumption is less than power production. On the other hand, the charging rate may increase based on the amount (or ratio) by which power consumption exceeds power production, and may decrease based on the amount (or ratio) by which power consumption is less than power production. In addition, big data includes the proportion and number of electric vehicles capable of charging/discharging by region, average charging time and average discharging time by electric vehicle type, lifestyle patterns, driver's gender and age, traffic volume, driving distance, battery charging characteristics, etc. Additional statistical data may be included, such as:

As an example, charging/discharging rates by region/electric power operator/charging station may change in real time according to power demand forecast. Accordingly, the electric drive vehicle 250 can receive and synchronize information on the updated charging/discharging rate policy for each region/electric power company/charging station in real time.

Figure 7 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to an embodiment of the present disclosure.

In detail, FIG. 7 is a flowchart illustrating a procedure for controlling charge/discharge according to the charge/discharge schedule of an electric drive vehicle determined based on the charge/discharge rate policy for each region code in the V2G system.

Referring to FIG. 7, the electric drive vehicle 250 may transmit current location information to the charging system operation server 230 through the network 260 (S701).

The charging system operation server 230 may identify the area code corresponding to the current location information of the electric drive vehicle 250 and extract information about the charge/discharge rate policy corresponding to the identified area code from the internal database. (S702 to S703). Here, the charge/discharge rate policy may be dynamically updated according to regional power demand forecasts, but this is only one embodiment and may be updated according to the request of the electric power company or the operator of the smart wired and wireless charging station 240. You can.

The charging system operation server 230 may transmit information about the identified area code and the charging/discharging rate policy extracted corresponding to the area code to the electric drive vehicle 250 (S704).

The electric drive vehicle 250 may determine an optimal charge/discharge schedule based on the user-entered driving plan and the received charge/discharge rate policy (S705). The electric drive vehicle 250 according to the embodiment may determine an optimal charge/discharge schedule based on at least one of a user-entered driving plan (or driving pattern) and battery charge state as well as the received charge/discharge rate policy. there is.

The electric vehicle 250 may charge/discharge the smart wired/wireless charging station 240 based on the determined charge/discharge schedule (S706).

When charging and/or discharging is completed, the smart wired and wireless charging station 240 may calculate the charging amount and/or discharging amount and calculate a fee based on the calculated charging and/or discharging amount (S707 to S708). .

The smart wired and wireless charging station 240 can transmit the calculated rate information to the electric drive vehicle 250 (S709).

In addition, the smart wired and wireless charging station 240 may transmit a billing request message containing the calculated charge and/or discharge amount and calculated rate information corresponding to the electric drive vehicle 250 to the charging system operation server 230. (S710).

The charging system operation server 230 may identify the account based on the received billing request message and generate billing information corresponding to the identified account (S711).

The charging system operation server 230 according to the embodiment performs automatic payment based on the generated billing information, and sends the automatic payment result to the electric drive vehicle 250 or a user terminal (not shown) linked to the electric drive vehicle 250. ) can be transmitted to.

Figure 8 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.

In detail, FIG. 8 is a flowchart illustrating a procedure for controlling charge/discharge according to the charge/discharge schedule of an electric drive vehicle determined based on the charge/discharge rate policy for each power provider code in the V2G system.

Referring to FIG. 8, the electric drive vehicle 250 may transmit vehicle driving state information to the charging system operation server 230 through the network 260 (S801). As an example, vehicle status information may include at least one of information about the current location of the vehicle, information about the current driving path, and information about the current battery charging state, but is not limited to this, and information about the driving speed of the vehicle. , it may further include at least one of information on power consumed per unit time (kWh) and information on the user's preferred power provider.

The charging system operation server 230 identifies at least one electric power provider capable of charging/discharging according to vehicle state information of the electric drive vehicle 250, and sets a charging/discharging rate corresponding to each of the identified at least one electric power provider. Information about the policy can be extracted from the internal database (S802 to S803). Here, the charging/discharging rate policy may be dynamically updated by the charging system operation server 230 according to the power demand forecast for each power provider, but this is only one embodiment and is requested by the power provider or a smart wired/wireless charging station. (240) It may be updated according to the operator’s request, etc.

The charging system operation server 230 may transmit code information about at least one identified electric power provider and information about the charging/discharging rate policy extracted corresponding to the corresponding electric power provider code to the electric drive vehicle 250 (S804 ).

The electric drive vehicle 250 determines the optimal power provider based on the charge/discharge rate policy for each received power provider code, and determines the optimal charge/discharge schedule based on the charge/discharge rate policy corresponding to the determined power provider. (S805). The electric drive vehicle 250 according to the embodiment determines the optimal power provider for charging/discharging based on the driving plan input by the user, and optimally charges/discharges based on the determined charging/discharging rate policy of the power provider. You can decide your schedule.

The electric drive vehicle 250 can charge/discharge the smart wired/wireless charging station 240 based on the determined charge/discharge schedule (S806).

When charging and/or discharging is completed, the smart wired and wireless charging station 240 may calculate the charging amount and/or discharging amount and calculate a fee based on the calculated charging amount and/or discharging amount (S807 to S808). .

The smart wired and wireless charging station 240 can transmit the calculated rate information to the electric vehicle 250 (S809).

In addition, the smart wired and wireless charging station 240 may transmit a billing request message containing the calculated charge and/or discharge amount and calculated rate information corresponding to the electric drive vehicle 250 to the charging system operation server 230. (S810).

The charging system operation server 230 may identify the account based on the received billing request message and generate billing information corresponding to the identified account (S811).

The charging system operation server 230 according to the embodiment performs automatic payment based on the generated billing information, and sends the automatic payment result to the electric drive vehicle 250 or a user terminal (not shown) linked to the electric drive vehicle 250. ) can be transmitted to.

Figure 9 is a flowchart for explaining a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.

In detail, FIG. 9 is a flowchart illustrating a procedure for controlling charge/discharge according to the charge/discharge schedule of an electric drive vehicle determined based on a predefined charge/discharge rate policy for each smart wired/wireless charging station identification code in the V2G system. .

Referring to FIG. 9, the electric drive vehicle 250 may transmit vehicle driving state information to the charging system operation server 230 through the network 260 (S901). As an example, vehicle status information includes at least one of information about the current location of the vehicle, information about the current driving route (or destination) set in the navigation system, and information about the current battery charge state - for example, the current remaining battery level. It may be, but is not limited to, information about the vehicle's current driving speed (or average driving speed during unit time), information about the name of the road (and/or road type) on which the vehicle is currently driving, and consumption per unit time. It may further include at least one of information about the power being used (kWh) and information about the user's preferred power provider and/or charging station.

The charging system operation server 230 identifies at least one smart wired and wireless charging station capable of charging/discharging corresponding to vehicle status information of the electric drive vehicle 250, and provides a charging station corresponding to each of the identified at least one smart wired and wireless charging stations. Information about the predefined charge/discharge rate policy can be extracted from the internal database (S902 to S903). Here, the charge/discharge rate policy may be dynamically updated by the charging system operation server 230 according to the power demand forecast for each smart wired and wireless charging station, but this is only one embodiment, and as another embodiment, smart wired and wireless charging It may be updated upon request from the station operator.

The charging system operation server 230 sends information about the identification code corresponding to each of the identified at least one smart wired and wireless charging station and information about the charging/discharging rate policy extracted corresponding to the identification code to the electric drive vehicle 250. It can be transmitted to (S904).

The electric drive vehicle 250 determines the optimal charging station based on the charge/discharge rate policy for each received smart wired/wireless charging station identification code, and determines the optimal charge/discharge rate policy based on the charge/discharge rate policy corresponding to the determined charging station. The discharge schedule can be determined (S905). The electric drive vehicle 250 according to the embodiment determines the optimal charging station for charging/discharging based on the selected driving route corresponding to the destination information input by the user through a predetermined input means on the navigation system 330. , the optimal charge/discharge schedule can be determined based on the charge/discharge rate policy of the determined charging station.

The electric drive vehicle 250 may charge/discharge the smart wired/wireless charging station 240 based on the determined charge/discharge schedule (S906).

When charging and/or discharging is completed, the smart wired and wireless charging station 240 may calculate the charging amount and/or discharging amount and calculate a fee based on the calculated charging amount and/or discharging amount (S907 to S908). .

The smart wired and wireless charging station 240 can transmit the calculated rate information to the electric vehicle 250 (S809).

In addition, the smart wired and wireless charging station 240 may transmit a billing request message containing the calculated charge and/or discharge amount and calculated rate information corresponding to the electric drive vehicle 250 to the charging system operation server 230. (S910).

The charging system operation server 230 may identify the account based on the received billing request message and generate billing information corresponding to the identified account (S911).

The charging system operation server 230 according to the embodiment performs automatic payment based on the generated billing information, and sends the automatic payment result to the electric drive vehicle 250 or a user terminal (not shown) linked to the electric drive vehicle 250. ) can be transmitted to.

FIG. 10 is a flowchart illustrating a charging/discharging procedure of an electric drive vehicle according to another embodiment of the present disclosure.

In detail, Figure 10 shows parameter correction for system protection based on system parameter information corresponding to the area code obtained from the smart wired and wireless charging station 240, and power control based on the corrected parameters to achieve electric drive. This is a flowchart to explain the procedure for discharging the vehicle 250.

Referring to FIG. 10, the smart wired and wireless charging station 240 may establish a communication channel with the detected electric vehicle 250 and perform mutual authentication and security procedures through predetermined signaling (S1001).

The smart wired and wireless charging station 240 according to the embodiment may determine the charging/discharging mode through power transmission negotiation with the electric drive vehicle 250 when the mutual authentication and security procedures are successfully completed. Here, the charge/discharge mode may include a wired charge/discharge mode and a wireless charge/discharge mode. The smart wired and wireless charging station 240 provides optimal charging/discharging based on at least one of the driving state of the electric vehicle 250, charging/discharging capability, required charging/discharging power, remaining battery capacity, and available charging/discharging time. The mode can be determined dynamically. For example, the driving state may be divided into a stopped state and a driving state. As an example, the charging/discharging capability may include information regarding whether wired charging/discharging is possible and information regarding whether wireless charging/discharging is possible. The charge/discharge available time may be determined based on a predetermined charge/discharge schedule of the electric drive vehicle 250.

If the mutual authentication and security procedures are successfully completed in the smart wired and wireless charging station 240, system parameters corresponding to the area code can be transmitted to the electric drive vehicle 250 (S1002).

The smart wired and wireless charging station 240 may generate a predetermined reference power signal and transmit it to the electric drive vehicle 250 (S1003 to S1004).

The electric drive vehicle 250 may measure the operating frequency based on the received reference power signal (S1005).

The electric drive vehicle 250 may correct the measured operating frequency based on system parameters (S1006).

The electric drive vehicle 250 may determine (or calculate) the active power value corresponding to the corrected operating frequency based on a pre-stored operating frequency/active power value mapping table or a predefined equation ( S1007).

The electric drive vehicle 250 may determine whether power control is necessary based on a comparison result between the determined active power value and the active power value included in the system parameter (S1008).

As a result of the determination, if power control is necessary, the electric drive vehicle 250 may generate a power control request message and transmit it to the smart wired and wireless charging station 240 (S1009 to S1010). Here, the power control request message may include a control error value determined based on the difference between the determined active power value and the active power value included in the system parameter.

The smart wired and wireless charging station 240 may perform power control by adjusting the operating frequency based on the control error value included in the power control request message (S1011). Afterwards, the smart wired and wireless charging station 240 may transmit a power-controlled reference power signal.

The electric drive vehicle 250 may re-determine whether power control is necessary by performing the above-described steps S1005 to S1007 on the reference power signal received after requesting power control.

As a result of the determination, if power control is no longer needed, the electric drive vehicle 250 sets the initial discharge power to an active power value corresponding to the final corrected operating frequency and transmits power to the smart wired and wireless charging station 240, i.e. , discharge power signal transmission can be performed (S1012 to S1013).

The smart wired and wireless charging station 240 can convert the power received from the electric drive vehicle 250 into the power required for the grid and transmit it back (S1014).

Figure 11 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to an area code according to an embodiment of the present disclosure.

Referring to FIG. 11, 0x17 may be predefined as an area code (or country code) for Austria, and each rate for charging and discharging may be defined differently depending on the time zone.

As shown in FIG. 11, the charge/discharge scheduling table may be configured to include a discharge scheduling table 1110 and a charge scheduling table 1120.

The discharge scheduling table 1110 includes a discharge rate field 1111 indicating the discharge rate for each time zone, a discharge mode field 1112 indicating the time zone to operate in the discharge mode and the discharge start time zone, and whether actual discharge was performed in the corresponding time zone. It may be configured to include a discharge flag field 1113 indicating whether or not and a deposit status field 1114 for identifying whether the cost deposit to the vehicle owner's account for the discharge performed in the corresponding time period has been completed.

The charging scheduling table 1120 includes a charging rate field 1121 indicating the charging rate for each time zone, a charging mode field 1122 indicating the time zone to operate in charging mode and the charging start time zone, and whether actual charging was performed in the corresponding time zone. It may be configured to include a charging flag field 1123 that indicates whether or not and a withdrawal status field 1124 that identifies whether the cost withdrawal from the vehicle owner's account has been completed for charging performed in the corresponding time period.

Referring to drawing number 1120, the 2-4 time slot is pre-scheduled as a charging time zone, but since the charging flag value is “0”, this means that actual charging is not performed.

As shown in FIG. 11, at least one of the charging time zone and the discharging time zone may not be set as a continuous time zone.

Figure 12 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to a power provider code according to an embodiment of the present disclosure.

Referring to FIG. 12, 0x17 may be predefined as an area code (or country code) for Austria, and there may be multiple power companies capable of charging/discharging within Austria. Charge/discharge rates for each power provider may be defined differently depending on the policies of each power provider.

The charge/discharge scheduling table according to the embodiment may be configured by integrating both the discharge schedule and the charge schedule.

Referring to FIG. 12, the charge/discharge scheduling table 1200 includes a rate field 1201 indicating a rate according to the time zone for each electric power company, and a mode field 1202 indicating which mode to operate in between discharge and charge. ), a discharge flag field 1203 indicating whether actual discharging was performed in the corresponding time zone, a charging flag field 1204 indicating whether actual charging was performed in the corresponding time zone, and a discharge or charging performed in the corresponding time zone. It may be configured to include a deposit/withdrawal status field 1205 to identify whether the cost deposit or cost withdrawal to the vehicle owner's account has been completed.

In this embodiment, power business operators capable of charging/discharging the electric drive vehicle may include power business operator 1 (code: 0x2a), power business operator 2 (code: 0x2b), and power business operator 3 (code: 0x2c). there is. The electric drive vehicle 250 may determine the optimal power provider for charging/discharging as Power Provider 3 based on the rates for each power provider.

Referring to drawing number 1200, it shows that the 12-14 time slot was pre-scheduled as a discharge time zone and actual discharge was performed, but the cost for the discharge has not yet been deposited.

The charging/discharging schedule according to FIG. 12 appears to be set as a continuous time zone for charging and discharging, but this is only an example, and the preset driving plan (or recognized through prior learning) of the vehicle It may also be set discontinuously based on the driving pattern).

Figure 13 shows a charge/discharge scheduling table based on a charge/discharge rate policy corresponding to a charging station identification code according to an embodiment of the present disclosure.

Referring to FIG. 13, 0x17 may be predefined as a region code (or country code) for Austria, and the power provider code for a power provider capable of charging/discharging in Austria may be defined as 0x2c. A plurality of smart wired and wireless charging stations may be operated by each power provider, and the charging/discharging rates for each smart wired and wireless charging station may be defined differently depending on the policy of the power provider or the charging station operator.

The charge/discharge scheduling table according to the embodiment of FIG. 13 may be configured by integrating both the discharge schedule and the charge schedule.

Referring to FIG. 13, the charge/discharge scheduling table 1300 includes a rate field 1301 for indicating the rate according to the time zone for each charging station, and a mode field 1302 for indicating which mode to operate in between discharge and charge. ), a discharge flag field 1303 indicating whether actual discharge was performed in the corresponding time zone, a charging flag field 1304 indicating whether actual charging was performed in the corresponding time zone, and a discharge or charging performed in the corresponding time zone. It may be configured to include a deposit/withdrawal status field 1305 to identify whether the cost deposit or cost withdrawal to the vehicle owner's account has been completed.

In this embodiment, the smart wired and wireless charging station capable of charging/discharging the electric vehicle includes charging station 1 (code: 0x3a), charging station 2 (code: 0x3b), and charging station 3 (code: 0x3c). can do. The electric drive vehicle 250 can determine the optimal charging station for charging/discharging based on the rate for each charging station. In this embodiment, the case where charging station 3 is determined to be the optimal charging/discharging station is described as an example. I decided to do it.

Referring to drawing number 1300, the time slot 12-14 was pre-scheduled as a discharge time zone and actual discharge was performed, but the cost for the discharge has not yet been deposited. In addition, the 2-4 time zone was pre-scheduled as a charging time zone and actual charging was performed, but it shows that the cost for the charging has not yet been withdrawn.

The charging/discharging schedule according to FIG. 13 appears to be set as a continuous time zone for charging and discharging, but this is only an example and is based on the vehicle's preset driving plan (or recognized through prior learning). It may also be set discontinuously based on the driving pattern).

FIG. 14 is a flowchart illustrating a charging/discharging scheduling method for an electric vehicle according to an embodiment of the present disclosure.

Referring to FIG. 14, the electric drive vehicle 250 sends information about the charging/discharging rate policy for each region (or country) and/or electric power provider and/or charging station to the charging system operation server 230 and/or the electric power service provider. It can be received from a server (not shown) and/or a smart wired or wireless charging station 240 (S1401). Here, information about the charge/discharge rate policy may be received by being mapped to at least one of an area code (or country code), a power provider code, and a charging station identification code.

The electric drive vehicle 250 may receive information about the driving pattern of the vehicle from the charging system operation server 230 or a separate cloud server (not shown) (S1402). As an example, driving patterns can be analyzed through prior learning on big data based on driving information previously collected for the vehicle. As an example, the driving pattern may include information on driving times and stopping times in units of year/month/week/day of the week, but is not limited to this, and the average driving distance and average of each time period in units of year/month/week/day of the week. Additional information on power consumption, etc. may be included.

The electric drive vehicle 250 can predict a time period during which charging/discharging is possible based on information about the driving pattern (S1403).

The electric drive vehicle 250 selects the optimal area code (or country code) and/or electric utility code and/or charging station identification code for charging/discharging based on the predicted charging/discharging availability time zone and charging/discharging rate policy. can be determined (S1404).

The electric drive vehicle 250 may generate a charge/discharge scheduling table based on the charge/discharge rate policy corresponding to the determined code (S1405).

The electric drive vehicle 250 may perform charging/discharging based on the charging/discharging scheduling table and then update the charging/discharging scheduling table according to the charging/discharging results (S1406). Here, the updated information may include information on whether actual charging/discharging was performed for each scheduled charging/discharging time slot and information on whether payment for the charge/discharging was completed.

In the above embodiment, it is explained that the electric drive vehicle 250 directly determines the charge / discharge schedule, but this is only one embodiment, and in another embodiment, the charging system operation server 230 determines the charge / discharge schedule. A charging/discharging schedule for 250) may be determined, and information on the determined charging/discharging schedule may be transmitted to the electric drive vehicle 250. In this case, the charging system operation server 230 provides information on the pre-analyzed driving pattern for the electric drive vehicle 250, information on the current charge/discharge rate policy by region/electric power company/charging station, and the electric drive vehicle 250. wired/wireless charging capability information, current location information of the electric drive vehicle 250, information on the driving route set through the navigation system 330 of the electric drive vehicle 250, and current location information of the electric drive vehicle 250. Information on battery charging status, information on future driving plans entered by the user, power usage statistical information by quarter/month/week/day pre-collected by electric power provider and/or smart wired/wireless charging station, smart wired/wireless charging station Charging/discharging scheduling may be further based on at least one of information regarding failure.

FIG. 15 is a flowchart illustrating a method of performing charging/discharging scheduling of an electric vehicle through interworking with a server according to an embodiment of the present disclosure.

Referring to FIG. 15, the electric drive vehicle 250 can transmit the current location measured using the provided positioning means and/or information about the user-set driving route (or destination) to the server through the navigation system 330. There is (S1501). Here, the server may be the charging system operation server 230 of FIG. 2 described above, but this is only one embodiment, and may be another server connected to the network 260 - for example, a cloud server.

The electric drive vehicle 250 includes information about at least one power provider code corresponding to the current location and/or driving route (or destination), information about a charge/discharge rate policy corresponding to each of the at least one power provider code, and Information about system parameters can be received from the server (S1502).

The electric drive vehicle 250 may determine an available charging/discharging time zone for the vehicle based on a pre-analyzed driving pattern and/or a user-set driving plan (S1503).

The electric drive vehicle 250 selects a power provider with optimal cost based on the determined available charge/discharge time zone and charge/discharge rate policy for each power provider code, and charges based on the charge/discharge rate policy of the selected power provider. /The discharge schedule can be determined (S1504).

The electric drive vehicle 250 may transmit to the server a charging station recommendation request message containing information about the vehicle's charging/discharging capability, information about the selected power provider code, and information about the user-set driving route (S1505). .

The electric drive vehicle 250 may receive location information of the charging station recommended by the server - or charging station identification code information - from the server in response to the charging station recommendation request message.

The electric drive vehicle 250 enters the location information of the charging station - or charging station identification code information - into the navigation system 330 and then moves to the corresponding charging station and transmits the initial power signal - that is, the reference power signal - to the charging station. It can be received from (S1507). When location information of the charging station is input, the electric vehicle 250 according to the embodiment may switch to autonomous driving mode and move to the charging station.

The electric drive vehicle 250 may perform charging/discharging with the charging station according to the determined charging/discharging schedule after correcting the opening parameters based on the reference power signal measurement results (S1508).

FIG. 16 is a flowchart illustrating a method of charging/discharging an electric vehicle using navigation information according to an embodiment of the present disclosure.

Referring to FIG. 16, the electric vehicle 250 may generate map information mapping charging/discharging rate policies and system parameters for each charging station and register it in the navigation system 330 of the vehicle (S1601).

The electric drive vehicle 250 may refer to the map information and identify at least one charging station capable of charging/discharging corresponding to the current location and/or movement path of the vehicle (S1602).

The electric drive vehicle 250 may extract a charge/discharge rate policy mapped to each of the at least one identified charging station (S1603).

The electric drive vehicle 250 may select a charging station that generates optimal cost based on the extracted charge/discharge rate policy and determine a charge/discharge schedule based on the charge/discharge rate policy corresponding to the selected charging station. (S1604).

The electric drive vehicle 250 may move to the selected charging station according to the determined charging/discharging schedule, establish a communication channel, and receive information about system parameters from the charging station (S1605). In an embodiment, information about system parameters may be pre-mapped to the charging station when creating the map in step 1601.

The electric drive vehicle 250 may correct system parameters based on the reference power signal received from the charging station (S1606). Here, the reference power signal may be received at a relatively lower power than the power signal for actual charging/discharging.

The electric drive vehicle 250 may perform charging/discharging according to the determined charging/discharging schedule (S1607).

The electric drive vehicle 250 may update the charging/discharging scheduling table according to the charging/discharging performance results (S1608).

Figure 17 is a flowchart for explaining a method of charging/discharging an electric drive vehicle upon border entry according to an embodiment of the present disclosure.

Referring to FIG. 17, the electric drive vehicle 250 may determine whether to enter the border by linking with the navigation system 330 while driving (S1701).

As a result of the determination, when entering the border, the electric drive vehicle 250 may transmit information about the current location (or current driving path) and the currently set area code to the server through the network 260 (S1702 to S1703). As an example, the server may be the charging system operation server 230 of FIG. 2 described above, but is not limited thereto, and may be a separate cloud server connected to the network 260. Here, the cloud server may be linked to the charging system operation server 230 through the network 260.

The electric drive vehicle 250 may receive an area code update request message from the server containing information about a new area code and a charging/discharging rate policy corresponding to the new area code (S1703).

The electric drive vehicle 250 updates the previously set area code to a new area code and then determines a new charge/discharge schedule based on the charge/discharge rate policy corresponding to the new area code to update the previously set charge/discharge schedule. (S1705). Here, the specific method of determining the charge/discharge schedule is replaced with the description of the above-mentioned drawings.

The electric drive vehicle 250 may perform charging/discharging based on the updated charging/discharging schedule (S1706).

As an example, the charge/discharge rate policy corresponding to the new area code may be dynamically updated based on power consumption statistical information by time zone on a quarterly/monthly/weekly/day basis in the country corresponding to the area code. At this time, a predetermined charge/discharge rate update request message containing information about the updated charge/discharge rate policy corresponding to the new area code may be received from the server to the electric drive vehicle 250. The electric drive vehicle 250 may update the charge/discharge schedule according to the charge/discharge rate update request message.

The electric drive vehicle 250 according to the embodiment may obtain information about a charging station capable of charging/discharging corresponding to the current location (or driving path) from the server. The server may obtain vehicle state information of the electric drive vehicle 250. In this case, the server may determine and recommend the optimal charging station for the electric drive vehicle 250 based on the vehicle state information. Here, the detailed description of vehicle status information is replaced with the description of the above-described drawings.

The server may provide information about the charging station to be recommended - for example, a charging station identification code, detailed location information of the charging station, etc. - to the electric drive vehicle 250 .

When the charging time or discharging time arrives according to the updated charging/discharging schedule, the electric drive vehicle 250 can move to the corresponding charging station and automatically perform charging/discharging. As an example, the electric drive vehicle 250 may automatically switch to autonomous driving mode when the charging time or discharging time arrives, and perform autonomous driving based on the location information of the charging station set in the navigation system 330. You can move to the corresponding charging station.

If the system parameter corresponding to the area code to be updated upon border entry is different from the system parameter corresponding to the preset area code, the server according to the embodiment provides information about the system parameter corresponding to the new area code to the electric drive vehicle ( 250). Here, the types of system parameters and correction methods for system parameters are replaced with the descriptions of the drawings described above.

When the electric drive vehicle 250 enters near the border, the server according to the embodiment determines in which country it is advantageous in terms of cost to perform charging/discharging based on the charging/discharging rate policy by region code of the country. can do. The server may determine which country is advantageous in terms of cost and transmit the judgment result to the electric drive vehicle 250. Through this, users of the electric drive vehicle 250 have the advantage of being able to perform charging/discharging in a country where optimal costs occur.

The steps of the method or algorithm described in connection with the embodiments disclosed herein may be implemented directly as hardware, software modules, or a combination of the two executed by a processor. Software modules may reside in a storage medium (i.e., memory and/or storage) such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM.

An exemplary storage medium is coupled to a processor, the processor capable of reading information from and writing information to the storage medium. Alternatively, the storage medium may be integrated with the processor. The processor and storage medium may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal. Alternatively, the processor and storage medium may reside as separate components within the user terminal.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

Claims (22)

In the charging/discharging method in an electric drive vehicle,
Receiving information about the charge/discharge rate policy corresponding to the area code;
determining a charge/discharge schedule based on the charge/discharge rate policy; and
Performing charging/discharging with the charging station based on the determined charging/discharging schedule
Method, including. According to paragraph 1,
measuring the current location of the electric drive vehicle; and
Transmitting information about the measured current location to a server through a network
The method further includes, wherein information about a charge/discharge rate policy corresponding to the area code mapped to the measured current location is received from the server. According to paragraph 1,
Establishing a communication channel with the charging station; and
Performing mutual authentication and security procedures through the communication channel
Including more,
The communication channel is established based on the success of the mutual authentication and security procedures.
A method in which information about a charge/discharge rate policy corresponding to the area code is received from the charging station. According to paragraph 3,
The step of determining the charge/discharge schedule based on the charge/discharge rate policy is:
Predicting a charging/discharging time zone;
determining a charge/discharge time zone that generates optimal cost based on the charge/discharge rate policy and the predicted charge/discharge time zone; and
Creating a charge/discharge scheduling table based on the determined charge/discharge time zone.
Method, including. According to paragraph 3,
The method further includes updating the charge/discharge scheduling table based on a result of performing the charge/discharge. According to paragraph 3,
The charge/discharge scheduling table includes a discharge scheduling table and a charge scheduling table,
The discharge scheduling table includes a discharge rate field indicating the discharge rate for each time zone, a discharge mode field indicating the time zone to operate in the discharge mode and the discharge start time zone, a discharge flag field indicating whether actual discharge was performed in the corresponding time zone, and the corresponding Contains at least one of the deposit status fields indicating whether the cost deposit has been completed for the discharge performed in the time slot,
The charging scheduling table includes a charging rate field indicating the charging rate for each time zone, a charging mode field indicating the time zone to operate in the charging mode and the charging start time zone, a charging flag field indicating whether actual discharging was performed in the corresponding time zone, and the corresponding A method comprising at least one of a withdrawal status field indicating whether cost withdrawal has been completed for a recharge performed in a time slot. According to paragraph 1,
The charge/discharge schedule is further determined based on at least one of a user-set future driving plan, a current driving route, a driving pattern of the electric drive vehicle, and a current battery charge state of the electric drive vehicle. According to paragraph 1,
Further comprising transmitting vehicle status information to a server through a network,
The method wherein the driving pattern is analyzed by the server through prior learning of the vehicle state information and then transmitted to the electric drive vehicle. According to paragraph 1,
The step of determining the charge/discharge schedule is,
determining a discharge time period in which the maximum discharge rate is generated based on the charge/discharge rate policy; and
Charging time zone in which the minimum charging fee is incurred based on the above charging/discharging rate policy
decision steps
Method, including. According to paragraph 1,
The method wherein the charge/discharge rate policy corresponding to the region code is dynamically updated based on power consumption statistical information for each time zone on a quarter/month/week/day basis in the region. A non-volatile computer-readable storage medium storing at least one computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform charging/discharging of an electric drive vehicle,
The above operations are:
Receiving information about the charge/discharge rate policy corresponding to the area code;
determining a charge/discharge schedule based on the charge/discharge rate policy; and
Performing charging/discharging with the charging station based on the determined charging/discharging schedule
Storage media, including. battery;
An electric vehicle charging controller that controls charging and discharging; and
A charging/discharging device that charges or discharges the battery in conjunction with a charging station under the control of the electric vehicle charging controller.
Including,
The electric vehicle charging controller,
Upon receiving information about the charge/discharge rate policy corresponding to the area code, a charge/discharge schedule is determined based on the charge/discharge rate policy, and a charging station and charge/discharge are connected based on the determined charge/discharge schedule. An electric drive vehicle, characterized in that: According to clause 12,
a positioning system that measures the current location of the electric vehicle; and
Vehicle communication terminal that communicates with external devices through a network
It further includes,
The electric vehicle charging controller transmits information about the current location measured by the positioning system to the server through the network, and provides information about the charge/discharge rate policy corresponding to the area code mapped to the measured current location. An electric drive vehicle receiving from the server. According to clause 12,
The electric vehicle charging controller establishes a communication channel with the charging station through the charging/discharging device, performs mutual authentication and security procedures through the communication channel, and charges the electric vehicle based on the success of the mutual authentication and security procedures. An electric drive vehicle, wherein a controller receives information about a charge/discharge rate policy corresponding to the area code from the charging station via the communication channel. According to clause 14,
The electric vehicle charging controller predicts a charging/discharging time zone, determines a charging/discharging time zone that generates optimal cost based on the charging/discharging rate policy and the predicted charging/discharging time zone, and determines the determined charging/discharging time zone. An electric drive vehicle that generates a charge/discharge scheduling table based on the discharge time zone. According to clause 15,
An electric vehicle in which the electric vehicle charging controller updates the charging/discharging scheduling table based on a result of performing the charging/discharging. According to clause 15,
The charge/discharge scheduling table includes a discharge scheduling table and a charge scheduling table,
The discharge scheduling table includes a discharge rate field indicating the discharge rate for each time zone, a discharge mode field indicating the time zone to operate in the discharge mode and the discharge start time zone, a discharge flag field indicating whether actual discharge was performed in the corresponding time zone, and the corresponding Contains at least one of the deposit status fields indicating whether the cost deposit has been completed for the discharge performed in the time slot,
The charging scheduling table includes a charging rate field indicating the charging rate for each time zone, a charging mode field indicating the time zone to operate in the charging mode and the charging start time zone, a charging flag field indicating whether actual discharging was performed in the corresponding time zone, and the corresponding An electrically driven vehicle, comprising at least one of a debit status field indicating whether a charge has been completed for charging performed in the time slot. According to clause 12,
The charging/discharging schedule is further determined based on at least one of a user-set future driving plan, a current driving route, a driving pattern of the electric driving vehicle, and a current battery charge state of the electric driving vehicle. According to clause 12,
The electric vehicle charging controller transmits vehicle status information to a server through the network, and the driving pattern is analyzed by the server through prior learning of the vehicle status information and then transmitted to the electric drive vehicle. , electric driven vehicles. According to clause 12,
The electric vehicle charging controller determines a discharge time zone in which the maximum discharge rate is generated based on the charge/discharge rate policy, and determines a charging time zone in which the minimum charge rate is generated based on the charge/discharge rate policy to optimally charge the charge. /Electrically driven vehicle, which determines the discharge schedule. According to clause 12,
The charge/discharge rate policy corresponding to the region code is dynamically updated based on power consumption statistical information for each time zone on a quarter/month/week/day basis in the region. According to clause 12,
The charge/discharge device is,
A wireless charging/discharging device that wirelessly transmits and receives power to charge/discharge the battery; and
A wired charge/discharge device that charges/discharges the battery by transmitting and receiving power via wires.
Including, electric driven vehicles.