Method and system for charging electric vehicle using community-based ami network

Abstract

The present invention relates to a method and a system for charging an electric vehicle using a community-based advanced metering infrastructure (AMI) network. The method for charging an electric vehicle using a community-based AMI network according to an embodiment of the present invention comprises the steps of: when a charger receives a charging request from an electric vehicle, requesting an allowable charging capacity through the AMI network; when an AMI modem receives a request for the allowable charging capacity from the charger, transmitting power usage and requesting a contract capacity; calculating, by the AMI modem, the allowable charging capacity on the basis of accumulated user data and user pattern analysis data received from an AMI management server, and transmitting the calculated allowable charging capacity to the charger; and charging, by the charger, the electric vehicle according to the allowable charging capacity.

Description

Electric vehicle charging method and system using a community-based AMI network

[0001] The present invention relates to a method and system for charging electric vehicles using a community-based Advanced Metering Infrastructure (AMI) network.

[0002] Research related to this patent was conducted with the support of the Korea Institute of Energy Technology Evaluation and Planning (Research Project Name: Energy Demand Management Core Technology Development Project, Research Project Name: Development and Demonstration of Community Energy Management System (CEMS) for Demand-Based Energy Efficiency, Project Identification Number: 1415188030, Project Number: 00236325) under the supervision of the Ministry of Trade, Industry and Energy.

[0003] Currently, electric vehicle chargers used in buildings are classified as slow chargers that supply AC power, allowing users to charge their electric vehicles while staying at home. However, using building electricity to charge electric vehicles requires a long charging time, and can result in excessive electricity bills if usage exceeds the contracted capacity with the electricity provider.

[0004] Additionally, in order to build an electric vehicle charging system within a building, separate electrical work for electric vehicle charging must be carried out, which incurs construction costs.

[0005] As the popularity and adoption rate of electric vehicles increases worldwide and people are transitioning from internal combustion engine vehicles to electric vehicles, the power supply, which is the energy source for electric vehicles, is being diversified. Therefore, methods to minimize user convenience and inconvenience during initial installation must also be introduced.

[0006] Conventional electric vehicle charging systems consist of an electric vehicle, a charger, and a power meter. When a user requests charging via a charger, the building's power meter simply supplies charging power. Using a conventional power meter for charging can lead to excessive electricity bills due to the inability to control power. To avoid this, a separate power meter specifically for electric vehicle charging must be installed.

[0007] A conventional AMI system includes a meter with an AMI modem, a DCU that collects data from the modem, and an AMI server that manages the entire system. The AMI modem uses PLC, RF, or LTE communication methods. Essentially, an AMI system measures electricity usage in real time. Device authentication systems are already in place and operating worldwide.

[0008] Embodiments of the present invention aim to provide a method and system for charging electric vehicles using a community-based AMI network, which utilizes existing power meters installed in homes, buildings, campuses, etc., and prevents excessive electricity bills.

[0009] Embodiments of the present invention aim to provide a method and system for charging electric vehicles using a community-based AMI network, which allows charging electric vehicles in community units such as homes, buildings, or campuses without additional electrical installation or construction, while simplifying the configuration of a charger as much as possible by combining the control method of electric vehicles and an AMI infrastructure network.

[0010] However, the problem to be solved by the present invention is not limited to this, and may be expanded in various ways in environments that do not deviate from the spirit and scope of the present invention.

[0011] According to one embodiment of the present invention, a method for charging an electric vehicle using a community-based AMI network performed by an electric vehicle charging system may be provided, the method comprising: when a charger receives a charging request from an electric vehicle, requesting a charging allowance capacity through an AMI network; when an AMI modem receives a request for a charging allowance capacity from the charger, transmitting power usage and requesting a contract capacity; a step in which the AMI modem calculates a charging allowance capacity based on user cumulative data and user pattern analysis data received from an AMI management server and transmits the calculated charging allowance capacity to the charger; and a step in which the charger charges the electric vehicle according to the charging allowance capacity.

[0012] The method may include a step in which, after charging of the electric vehicle begins, the AMI modem calculates a real-time allowable power amount and transmits it to the charger; and a step in which the charger checks the battery charge amount and adjusts the charging current according to the real-time allowable power amount.

[0013] The method may further include a step of transmitting charging information to the AMI modem via an AMI network when charging of the electric vehicle is completed; and a step of the AMI modem transmitting the charging information to the AMI management server.

[0014] The method may further include a step in which the AMI management server receives power usage from the AMI modem, verifies contract capacity and user cumulative data for the user, and generates user pattern analysis data based on the verified user cumulative data and transmits the generated data to the AMI modem.

[0015] The step of generating the above user pattern analysis data and transmitting it to the AMI modem can generate user pattern analysis data by analyzing the user's power usage pattern by time zone based on the confirmed user cumulative data.

[0016] The step of calculating the above charging allowable capacity and transmitting it to the charger may include calculating reserve power based on the user accumulated data and user pattern analysis data, calculating the charging allowable capacity based on the calculated reserve power, and transmitting it to the charger.

[0017] The step of charging the electric vehicle may include transmitting the charging allowable capacity to the electric vehicle and receiving the determined charging current from the electric vehicle to start a charging process.

[0018] Meanwhile, according to another embodiment of the present invention, an electric vehicle charging system using a community-based AMI network may be provided, including: a charger that requests a charging allowance through an AMI network when a charging request is received from an electric vehicle; an AMI modem that transmits power usage and requests a contracted capacity when the charging allowance is requested from the charger; and an AMI management server that receives the power usage from the AMI modem, verifies the contracted capacity and user cumulative data for a user, and generates user pattern analysis data based on the verified user cumulative data and transmits the generated user pattern analysis data to the AMI modem, wherein the AMI modem calculates a charging allowance based on the user cumulative data and the user pattern analysis data received from the AMI management server and transmits the calculated charging allowance to the charger, and the charger charges the electric vehicle based on the charging allowance.

[0019] After the above electric vehicle charging starts, the AMI modem calculates the real-time allowable power amount and transmits it to the charger, and the charger can check the battery charge amount and adjust the charging current according to the real-time allowable power amount.

[0020] When the charging of the electric vehicle is completed, the charger transmits charging information to the AMI modem via the AMI network, and the AMI modem can transmit the charging information to the AMI management server.

[0021] The above AMI management server can receive power usage from the AMI modem, check the contract capacity and user cumulative data for the user, and generate user pattern analysis data based on the checked user cumulative data and transmit the data to the AMI modem.

[0022] The above AMI management server can analyze the user's power usage pattern by time zone based on the confirmed user cumulative data to generate user pattern analysis data.

[0023] The step of calculating the above charging allowable capacity and transmitting it to the charger may include calculating reserve power based on the user accumulated data and user pattern analysis data, calculating the charging allowable capacity based on the calculated reserve power, and transmitting it to the charger.

[0024] The step of charging the electric vehicle may include transmitting the charging allowable capacity to the electric vehicle and receiving the determined charging current from the electric vehicle to start a charging process.

[0025] The disclosed technology may have the following effects. However, this does not mean that a particular embodiment must include all or only the following effects, and thus the scope of the disclosed technology should not be construed as being limited thereby.

[0026] One embodiment of the present invention configures an electric vehicle charging system by utilizing an AMI modem connected to an AMI meter, thereby enabling a simple configuration of an electric vehicle charger by utilizing an AMI modem and AMI management server included in an AMI infrastructure.

[0027] One embodiment of the present invention configures a real-time electric vehicle charging system by utilizing AMI network infrastructure, so it can be implemented without charging equipment or separate construction, and can reduce the cost of constructing a charger infrastructure.

[0028] Since one embodiment of the present invention utilizes the charging control function of an electric vehicle as is, separate charging control hardware does not need to be built.

[0029] One embodiment of the present invention can prevent excessive electricity bills due to electricity usage in a building by calculating and predicting the contract capacity, power usage, and electric vehicle charging power of a building through an AMI system.

[0030] FIG. 1 is a configuration diagram of an electric vehicle charging system using a community-based AMI network according to one embodiment of the present invention.

[0031] Figure 2 is a drawing showing a charging amount graph of a typical electric vehicle charging system.

[0032] FIG. 3 is a drawing showing a graph of a charging amount by an electric vehicle charging system according to one embodiment of the present invention.

[0033] FIG. 4 is a flowchart of an electric vehicle charging method using a community-based AMI network according to one embodiment of the present invention.

[0034] FIGS. 5 and 6 are flowcharts of an electric vehicle and a method for charging an electric vehicle by a user in an electric vehicle charging system according to one embodiment of the present invention.

[0035] Figure 7 is a flowchart of a method for charging an electric vehicle using a charger in an electric vehicle charging system according to one embodiment of the present invention.

[0036] FIG. 8 is a flowchart of a method for charging an electric vehicle using an AMI modem in an electric vehicle charging system according to one embodiment of the present invention.

[0037] FIG. 9 is a flowchart of a method for charging an electric vehicle by an AMI management server in an electric vehicle charging system according to one embodiment of the present invention.

[0038] The present invention is capable of various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it is to be understood that all modifications, equivalents, and alternatives included within the technical spirit and scope of the present invention are included. In describing the present invention, if a detailed description of a related known technology is judged to obscure the gist of the present invention, the detailed description will be omitted.

[0039] Terms like "first" and "second" may be used to describe various components, but these terms do not limit the components themselves. These terms are used solely to distinguish one component from another.

[0040] The terminology used in this invention is solely for the purpose of describing specific embodiments and is not intended to limit the invention. The terminology used in this invention has been selected from widely used, current terms, taking into account the functions of the invention. However, this may vary depending on the intentions of those skilled in the art, precedents, or the emergence of new technologies. Furthermore, in certain cases, the applicant may arbitrarily select terms, in which case their meanings will be described in detail in the relevant description of the invention. Therefore, the terms used in this invention should not be defined simply as names of terms, but rather based on their meanings and the overall content of the invention.

[0041] Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0042] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are assigned the same drawing numbers, and redundant descriptions thereof will be omitted.

[0043] FIG. 1 is a configuration diagram of an electric vehicle charging system using a community-based AMI network according to one embodiment of the present invention.

[0044] As illustrated in FIG. 1, the electric vehicle charging system (100) includes a charger (110), an AMI modem (120), and an AMI management server (130). However, not all of the illustrated components are essential. The electric vehicle charging system (100) may be implemented with more components than the illustrated components, or with fewer components.

[0045] Below, the specific configuration and operation of each component of the electric vehicle charging system (100) of Fig. 1 will be described.

[0046] The charger (110) includes a power module and a PLC modem. Here, the power module performs the function of supplying power. The PLC modem supplies and controls electric charging and is responsible for the overall communication of the electric vehicle charging system (100). The PLC modem communicates directly with the remote metering modem of the meter in the AMI network. In addition, the charger (110) may further include a DC meter, but the DC meter within the charger (110) may also be removed as needed. The charger (110) charges the electric vehicle (101) according to the charging capacity allowed by the charger (110).

[0047] When the electric vehicle charging system (100) communicates with the AMI network infrastructure, including the charger (110), it can essentially utilize the infrastructure of the AMI network to process authentication. Therefore, the electric vehicle charging system (100) can be configured without using the complex charger (110) network infrastructure of the past, and can be linked to a payment system through this.

[0048] When the AMI modem (120) receives a request for the allowable charging capacity from the charger (110), it checks the power usage through the plug and meter included in the building, transmits the power usage, and requests the contracted capacity. Here, one embodiment of the present invention is not limited to a building, and can be universally applied to a community unit including a home, a building, or a campus. One embodiment of the present invention can be applied to any place where electric vehicle charging is possible, and is not limited to a specific location. Thereafter, the AMI modem (120) calculates the allowable charging capacity based on the user cumulative data and user pattern analysis data received from the AMI management server (130) and transmits the calculated allowable charging capacity to the charger (110).

[0049] The AMI management server (130) receives power usage from the AMI modem (120), checks the contract capacity and user cumulative data for the user (102), and generates user pattern analysis data based on the checked user cumulative data and transmits the data to the AMI modem (120).

[0050] The electric vehicle charging system (100) according to one embodiment of the present invention basically has an AMI infrastructure network configured to resolve communication paths and device authentication. Since the electric vehicle charging system (100) can check the power status of a community unit, such as a home, building, or campus, in real time, it can calculate the allowable electric capacity when charging an electric vehicle (101). Accordingly, the electric vehicle charging system (100) provides charging while controlling the amount of electric charge in the electric vehicle (101) based on this, thereby simplifying the configuration of the charger (110) as much as possible and enabling charging in the community without additional electrical installation or construction. Here, the electric vehicle charging system (100) according to one embodiment of the present invention can be universally used in a community including a home, building, or campus.

[0051] Figure 2 is a drawing showing a charging amount graph of a typical electric vehicle charging system.

[0052] Conventional electric vehicle charging systems can charge the battery of an electric vehicle (101) to the same capacity as its capacity, but cannot control the charging capacity or charging speed. In other words, the charging system, which connects the power meter to the charger (110), recognizes the electric vehicle (101) as a load and supplies power equivalent to the capacity of the load.

[0053] As shown in Figure 2, conventional electric vehicle charging current consumption is based on the battery's discharge state, with the maximum current allowed. Once the battery reaches a certain level of charge, the vehicle stops accepting additional charge, reducing the charging current. Therefore, charging electric vehicles in buildings using existing equipment can result in excessive electricity bills due to power usage exceeding the contracted capacity. Furthermore, excessive electrical wiring load can also lead to power outages.

[0054] FIG. 3 is a drawing showing a graph of a charging amount by an electric vehicle charging system according to one embodiment of the present invention.

[0055] As illustrated in FIG. 3, an electric vehicle charging system (100) according to one embodiment of the present invention obtains AMI real-time electricity data regardless of the charging amount of an electric vehicle (101), and then calculates the contract capacity and allowable power amount of each building. The electric vehicle charging system (100) analyzes the power usage pattern and transmits the status to the electric vehicle (101) to be charged, and adjusts the charging power amount through the controller mounted on the electric vehicle (101), thereby enabling charging as illustrated in FIG. 3.

[0056] An electric vehicle charging system (100) according to one embodiment of the present invention can prevent excessive electricity charges and power outages due to exceeding the allowable capacity by requesting only the amount of electricity required by the electric vehicle (101) to be charged through this process using an AMI network.

[0057] FIG. 4 is a flowchart of an electric vehicle charging method using a community-based AMI network according to one embodiment of the present invention.

[0058] As illustrated in FIG. 4, in step S101, a user requests connection and charging of an electric vehicle (101) to a charger (110).

[0059] In step S102, the charger (110) requests the AMI modem (120) for the allowable charging capacity. Here, the PLC modem of the charger (110) transmits a request message for the allowable charging capacity to the AMI modem (120).

[0060] In step S103, the AMI modem (120) transmits the current power usage to the AMI management server (130) through the AMI network and requests the contract capacity of the building to which power will be provided and the power usage history of the building.

[0061] In step S104, the AMI management server (130) generates accumulated data analysis and user pattern analysis data based on accumulated user data such as the contract capacity of the confirmed building, current usage, and power usage history data of the building.

[0062] In step S105, the AMI management server (130) transmits the contract capacity and accumulated data to the AMI modem (120).

[0063] In step S106, the AMI modem (120) transmits the current allowable charging capacity to the charger (110).

[0064] In step S107, the charger (110) transmits the current allowable charging capacity to the electric vehicle (101).

[0065] In step S108, the electric vehicle (101) determines the charging current and transmits it to the charger (110).

[0066] In step S109, the charger (110) starts charging the electric vehicle (101) according to the charging current received from the electric vehicle (101).

[0067] Meanwhile, in step S110, the AMI modem (120) calculates the real-time allowable capacity during charging.

[0068] In step S111, the AMI modem (120) transmits the real-time allowable strategy amount to the charger (110).

[0069] In step S112, the electric vehicle (101) and the charger (110) calculate the amount of power required by the vehicle, check the battery charge amount, and adjust the amount of charging power so that the allowable capacity is not exceeded.

[0070] In step S113, when charging is completed, the electric vehicle (101) transmits a charging end signal to the charger (110).

[0071] In steps S114 and S115, the charger (110) reports the charging completion result to the AMI modem (120) and AMI management server (130) in the AMI network.

[0072] FIGS. 5 and 6 are flowcharts of an electric vehicle and a method for charging an electric vehicle by a user in an electric vehicle charging system according to one embodiment of the present invention.

[0073] First, the electric vehicle charging method illustrated in FIGS. 5 and 6 is connected via an AA block.

[0074] In step S201, the electric vehicle (101) requests charging from the charger (110).

[0075] In step S202, the electric vehicle (101) receives the current allowable charging capacity from the charger (110).

[0076] In step S203, the electric vehicle (101) checks whether the charging allowable capacity is 0.

[0077] In step S204, the electric vehicle (101) changes to standby mode when the charging allowable capacity converges to 0, and then measures the charging allowable capacity in real time.

[0078] In step S205, the electric vehicle (101) determines the charging current if the charging allowable capacity is not 0.

[0079] In step S206, the electric vehicle (101) transmits the determined charging current to the charger (110).

[0080] After step S206 illustrated in FIG. 5, the electric vehicle (101) starts the charging process in step S301 of FIG. 6.

[0081] In step S302, the electric vehicle (101) receives a real-time charging allowable capacity from the charger (110).

[0082] In step S303, the electric vehicle (101) receives the allowable capacity through the charger (110) and adjusts the charging current so that the allowable charging capacity is not exceeded.

[0083] In step S304, the electric vehicle (101) checks whether charging is complete.

[0084] In step S305, the electric vehicle (101) transmits a charging termination signal to the charger (110) when charging is complete. If charging is not complete, the process begins again from step S301. In this way, the electric vehicle (101) performs a charging process based on the remaining capacity calculated by the AMI network, and when the battery charge reaches the load value, the current is adjusted to fully charge the battery.

[0085] Meanwhile, in step S306, the electric vehicle (101) checks whether it is in a charging stop or emergency stop state.

[0086] In step S307, if the electric vehicle (101) is in a charging stop or emergency stop state, it determines that it has terminated abnormally and performs a charging termination operation. In this way, if the electric vehicle (101) forcibly stops charging, it is considered to have terminated abnormally and charging is terminated.

[0087] Figure 7 is a flowchart of a method for charging an electric vehicle using a charger in an electric vehicle charging system according to one embodiment of the present invention.

[0088] In step S401, when the charger (110) receives a charging request, it determines the connection status and charging status of the current electric vehicle (101).

[0089] In step S402, if the charger (110) is in a charging state, the charger (110) requests the charging allowance capacity through the AMI network.

[0090] In step S403, the charger (110) receives the current allowable charging capacity and transmits the received current allowable charging capacity to the electric vehicle (101).

[0091] In step S404, the charger (110) receives charging current from the electric vehicle (101).

[0092] In step S405, the charger (110) starts the charging process when it receives charging current from the electric vehicle (101).

[0093] In step S406, if charging is successful, the charger (110) transmits charging termination information received from the electric vehicle (101) to the AMI network and terminates charging.

[0094] Meanwhile, in step S407, if the current connection status of the electric vehicle (101) is not connected, the charger (110) transmits cable disconnection information to the electric vehicle (101).

[0095] FIG. 8 is a flowchart of a method for charging an electric vehicle using an AMI modem in an electric vehicle charging system according to one embodiment of the present invention.

[0096] In step S501, the AMI modem (120) receives a charge allowance capacity request.

[0097] In step S502, when the AMI modem (120) receives a charging request from the charger (110), it checks the current meter's power usage and transmits it to the AMI management server (130), and at the same time requests the user's contract capacity and chargeable power amount data.

[0098] In step S503, the AMI modem (120) receives user cumulative data and user pattern analysis data from the AMI management server (130).

[0099] In step S504, the AMI modem (120) calculates the reserve power based on the accumulated data and user pattern analysis data and then calculates the current charging allowable capacity.

[0100] In step S505, the AMI modem (120) calculates the allowable charging capacity based on the received user cumulative data and user pattern analysis data and transmits it to the charger (110).

[0101] In steps S506 and S507, the AMI modem (120) calculates the real-time charging allowable capacity when the electric vehicle is charging, and transmits the calculated real-time charging allowable capacity to the charger (110).

[0102] In steps S508 and S509, when the AMI modem (120) receives charging termination information from the charger (110), it transmits charging termination and power usage to the AMI management server (130).

[0103] FIG. 9 is a flowchart of a method for charging an electric vehicle by an AMI management server in an electric vehicle charging system according to one embodiment of the present invention.

[0104] In step S601, the AMI management server (130) receives current power usage.

[0105] In step S602, the AMI management server (130) checks the contract capacity and user accumulated data for the user.

[0106] In step S603, the AMI management server (130) analyzes the user's power usage pattern by time zone based on the user's accumulated data.

[0107] In step S604, the AMI management server (130) transmits the user pattern analysis data and the contract capacity in which the user's pattern is analyzed to the AMI modem (120).

[0108] In step S605, the AMI management server (130) receives charging information and power usage from the AMI modem (120) when charging is complete, and stores the power usage in a usage history database. Here, the power usage may be included in the cumulative data as a power usage history. This may be stored as cumulative data and used as future prediction data.

[0109] In this way, the electric vehicle charging system (100) according to one embodiment of the present invention configures the electric vehicle charging system (100) by utilizing the AMI modem (120) connected to the AMI meter, thereby enabling the configuration of the charger (110) of the electric vehicle (101) to be simply implemented by utilizing the AMI modem (120) and AMI management server (130) included in the AMI infrastructure.

[0110] An electric vehicle charging system (100) according to one embodiment of the present invention can be implemented without charging facilities or separate construction because it configures a real-time electric vehicle charging system by utilizing AMI network infrastructure, and can reduce the cost of constructing a charger (110) infrastructure.

[0111] Since the electric vehicle charging system (100) according to one embodiment of the present invention utilizes the charging control function of the electric vehicle (101) as is, separate charging control hardware does not need to be built.

[0112] An electric vehicle charging system (100) according to one embodiment of the present invention can prevent excessive electricity billing due to electricity use by calculating and predicting the contract capacity of a building, power usage, and electric vehicle charging power amount through an AMI system.

[0113] Meanwhile, according to one embodiment of the present invention, the various embodiments described above can be implemented as software including instructions stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device is a device that can call instructions stored from the storage medium and operate according to the called instructions, and may include an electronic device (e.g., electronic device (A)) according to the disclosed embodiments. When an instruction is executed by a processor, the processor can perform a function corresponding to the instruction directly or by using other components under the control of the processor. The instruction may include code generated or executed by a compiler or interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not contain a signal and is tangible, but does not distinguish between data being stored semi-permanently or temporarily in the storage medium.

[0114] Furthermore, according to one embodiment of the present invention, the method according to the various embodiments described above may be provided as included in a computer program product. The computer program product may be traded as a commodity between sellers and buyers. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or online through an application store (e.g., Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0115] Furthermore, according to one embodiment of the present invention, the various embodiments described above may be implemented in a computer-readable recording medium or a similar device using software, hardware, or a combination thereof. In some cases, the embodiments described herein may be implemented by the processor itself. In a software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein.

[0116] Meanwhile, computer instructions for performing processing operations of a device according to the various embodiments described above may be stored in a non-transitory computer-readable medium. The computer instructions stored in such a non-transitory computer-readable medium, when executed by a processor of a specific device, cause the specific device to perform processing operations in the device according to the various embodiments described above. A non-transitory computer-readable medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. Specific examples of non-transitory computer-readable media may include a CD, DVD, hard disk, Blu-ray disk, USB, memory card, or ROM.

[0117] In addition, each of the components (e.g., modules or programs) according to the various embodiments described above may be composed of a single or multiple entities, and some of the sub-components described above may be omitted, or other sub-components may be further included in various embodiments. Alternatively or additionally, some components (e.g., modules or programs) may be integrated into a single entity, which may perform the same or similar functions as those performed by each of the respective components prior to integration. Operations performed by modules, programs or other components according to various embodiments may be executed sequentially, in parallel, iteratively or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

[0118] Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the present disclosure pertains without departing from the gist of the present invention as claimed in the claims. Furthermore, such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0119] [Explanation of symbols]

[0120] 101: Electric Vehicles

[0121] 102: User terminal

[0122] 110: Charger

[0123] 120; AMI modem

[0124] 130: AMI Management Server

Claims

1. In a method for charging an electric vehicle performed by an electric vehicle charging system, When a charger receives a charging request from an electric vehicle, a step is taken to request charging capacity through the Advanced Metering Infrastructure (AMI) network; When the AMI modem requests a charging allowance from the charger, the step of transmitting the power usage and requesting the contracted capacity; A step in which the AMI modem calculates the allowable charging capacity based on the user cumulative data and user pattern analysis data received from the AMI management server and transmits the calculated charging capacity to the charger; and A method for charging an electric vehicle using a community-based AMI network, comprising a step of charging the electric vehicle according to the charging allowable capacity of the charger.

2. In paragraph 1, After the above electric vehicle charging starts, the AMI modem calculates the real-time allowable power amount and transmits it to the charger; and A method for charging an electric vehicle using a community-based AMI network, comprising a step of checking a battery charge amount and adjusting a charging current according to the real-time allowable power amount.

3. In paragraph 1, A step of transmitting charging information to the AMI modem via the AMI network when the charging of the electric vehicle is completed by the charger; and A method for charging an electric vehicle using a community-based AMI network, further comprising a step of transmitting the charging information by the AMI modem to the AMI management server.

4. In paragraph 1, A method for charging an electric vehicle using a community-based AMI network, further comprising a step of the AMI management server receiving power usage from the AMI modem, confirming a contract capacity and user cumulative data for a user, and generating user pattern analysis data based on the confirmed user cumulative data and transmitting the data to the AMI modem.

5. In paragraph 4, The step of generating the above user pattern analysis data and transmitting it to the AMI modem is as follows: An electric vehicle charging method using a community-based AMI network that generates user pattern analysis data by analyzing users' power usage patterns by time zone based on the above-confirmed accumulated user data.

6. In paragraph 1, The step of calculating the above charging allowable capacity and transmitting it to the charger is: An electric vehicle charging method using a community-based AMI network, which calculates reserve power based on the above-mentioned user cumulative data and user pattern analysis data, calculates the allowable charging capacity based on the calculated reserve power, and transmits the calculated allowable charging capacity to the charger.

7. In paragraph 1, The steps for charging the above electric vehicle are: A method for charging an electric vehicle using a community-based AMI network, which transmits the above charging allowable capacity to the electric vehicle and starts a charging processor by receiving a charging current determined from the electric vehicle.

8. A charger that requests charging capacity through the AMI network when receiving a charging request from an electric vehicle; When a charging allowance is requested from the above charger, an AMI modem that transmits the power usage and requests the contracted capacity; and Including an AMI management server that receives power usage from the AMI modem, verifies contract capacity and user cumulative data for the user, and generates user pattern analysis data based on the verified user cumulative data and transmits the data to the AMI modem. The above AMI modem calculates the allowable charging capacity based on the user cumulative data and user pattern analysis data received from the AMI management server and transmits the calculated charging capacity to the charger. An electric vehicle charging system using a community-based AMI network, in which the above charger charges the electric vehicle according to the above charging allowable capacity.

9. In paragraph 8, After the above electric vehicle charging starts, the AMI modem calculates the real-time allowable power amount and transmits it to the charger. An electric vehicle charging system using a community-based AMI network, wherein the above charger checks the battery charge amount and adjusts the charging current according to the real-time allowable power amount.

10. In paragraph 8, When the charging of the electric vehicle is completed, the charger transmits charging information to the AMI modem through the AMI network. An electric vehicle charging system using a community-based AMI network, in which the AMI modem transmits the charging information to the AMI management server.

11. In paragraph 8, An electric vehicle charging system using a community-based AMI network, wherein the AMI management server receives power usage from the AMI modem, verifies contract capacity and user cumulative data for the user, and generates user pattern analysis data based on the verified user cumulative data and transmits the data to the AMI modem.

12. In paragraph 11, The above AMI management server is an electric vehicle charging system using a community-based AMI network that analyzes the user's power usage pattern by time zone based on the confirmed user cumulative data and generates user pattern analysis data.

13. In paragraph 8, The step of calculating the above charging allowable capacity and transmitting it to the charger is: An electric vehicle charging system using a community-based AMI network that calculates reserve power based on the above user cumulative data and user pattern analysis data, calculates the allowable charging capacity based on the calculated reserve power, and transmits the calculated allowable charging capacity to the charger.

14. In paragraph 8, The steps for charging the above electric vehicle are: An electric vehicle charging system using a community-based AMI network that transmits the above charging allowable capacity to the electric vehicle and starts a charging processor by receiving a charging current determined from the electric vehicle.

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