Charging plan creation method, charging plan creation device, and charging plan provision system

Abstract

A charging plan for a plurality of batteries introduced to a site is created. The invention relates to a charging plan making method, which is used for making a charging plan of a plurality of batteries at one or more sites signed with one or more electric power contracts, the charging plan creation method includes: receiving a power usage amount at a station, each predetermined power consumption amount consumed by a plurality of batteries, and each chargeable time at which the plurality of batteries can be charged (S901); setting a peak value of the power used at the station in accordance with the usage amount (S902); and creating a peak control charging plan (S903) for the battery to be charged with each power consumption amount for each chargeable time so as not to exceed the set peak value.

Description

Technical Field

[0001] The present disclosure relates to a charging plan making method, a charging plan making device and a charging plan providing system for making a charging plan for a battery. Background Art

[0002] It is expected that the absolute number of EVs at charging stations will increase as the transition from internal combustion engines to EVs accelerates. This is not a problem for internal combustion engines that can be refueled in a relatively short time, but EVs that require charging equipment and take a long time to charge must create a charging plan that ensures enough power to travel the planned distance. Patent document 1 discloses a technology for creating a charging plan that takes into account changes in the unit price of electricity.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-30136 Summary of the invention

[0006] Problems to be solved by the invention

[0007] Patent Document 1 discloses creating a charging plan for charging one battery so as not to exceed an upper limit threshold TH.

[0008] However, Patent Document 1 does not consider the case where a plurality of batteries are charged in parallel. Therefore, there is no consideration of how to make a charging plan when a plurality of batteries are introduced at a station.

[0009] Therefore, the present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide a charging plan preparation method, a charging plan preparation device, and a charging plan providing system capable of preparing charging plans for a plurality of batteries introduced to a station.

[0010] Means for solving problems

[0011] The charging plan making method disclosed in the present invention makes a charging plan for multiple batteries at one or more sites that have signed one or more electricity contracts, and the charging plan making method has the following contents: receiving the power usage at the site, the predetermined power consumption amounts consumed by the multiple batteries, and the respective charging times that can charge the multiple batteries; setting the peak value of the power used at the site according to the power usage; and making a peak-controlled charging plan for the multiple batteries to be charged with each power consumption amount according to each charging time in a manner not exceeding the set peak value.

[0012] Effects of the Invention

[0013] According to the charging plan preparation method of the present disclosure, it is possible to prepare charging plans for a plurality of batteries introduced to a station.

[0014] Other objects and new features will become apparent from the description of this specification and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A It is an overall configuration diagram of the charging plan providing system according to the first embodiment.

[0016] Figure 1B (a) A hardware block diagram and (b) a functional block diagram of a processing unit according to the first embodiment.

[0017] Figure 2 1 is a diagram showing a site power usage table according to the first embodiment.

[0018] Figure 3 It is a diagram showing a site power contract information table according to the first embodiment.

[0019] Figure 4 It is a diagram showing a station vehicle information table according to the first embodiment.

[0020] Figure 5 It is a diagram showing a charging schedule table according to the first embodiment.

[0021] Figure 6 This is an example of a screen display of a charging plan according to the first embodiment.

[0022] Figure 7 1 is a diagram showing a site annual power usage table according to the first embodiment.

[0023] Figure 8 This is an example of screen display of time-series data of annual power usage at a site according to the first embodiment.

[0024] Fig. 9 This is a flowchart showing a method of creating a charging plan so as not to exceed the peak power in the first embodiment.

[0025] Fig.10 This is a flowchart showing a method of creating a charging plan so as to minimize the annual electricity cost according to the first embodiment.

[0026] Fig.11 : is a flowchart showing a method of creating a charging plan according to the second embodiment. DETAILED DESCRIPTION

[0027] In the following embodiments, for convenience, when necessary, they are divided into multiple parts or embodiments for description, but unless otherwise specified, they are not unrelated to each other, and one party is related to part or all of the other party’s modification examples, details, supplementary explanations, etc.

[0028] In addition, in the following embodiments, when referring to the quantity of elements (including number, numerical value, amount, range, etc.), except for cases where it is specifically stated and cases where it is obviously limited to a specific quantity in principle, it is not limited to the specific quantity and can be above or below the specific quantity.

[0029] Furthermore, in the following embodiments, the structural elements (including element steps, etc.) are of course not essential unless otherwise specified or unless otherwise clearly considered to be essential in principle.

[0030] Similarly, in the following embodiments, when referring to the shapes, positional relationships, etc. of structural elements, except for cases that are particularly clearly stated and cases that are obviously considered not to be so in principle, cases that are substantially similar or similar to their shapes, etc. are included. This also applies to the above-mentioned numerical values ​​and ranges.

[0031] In addition, in principle, the same components are denoted by the same reference numerals throughout the drawings for describing the embodiments, and duplicate descriptions thereof are omitted.

[0032] (First Embodiment)

[0033] <Charging plan provision system 1>

[0034] First, the configuration of the charging plan providing system 1 according to the first embodiment will be described. Figure 1A: is an overall structure diagram of a charging plan providing system 1 of a first embodiment. The charging plan providing system 1 provides a charging plan for a plurality of batteries 20 created by an information processing device 10 to a user device 40 installed at a site via a network 30. The charging plan providing system 1 includes: an information processing device 10 that creates a charging plan (peak control charging plan, cost control charging plan), a user device 40 installed at a site, a plurality of batteries 20, and a charging device 50 that charges the plurality of batteries 20. The information processing device 10 and the user device 40 are connected to each other via the network 30 so as to be communicable. In addition, the user device 40 and the charging device 50 are connected to each other so as to be communicable by wire or wireless. For example, the user device 40 is a web client, and the information processing device 10 is a web server. The web client executes software that utilizes a web server such as a web browser. In addition, the web client sends a processing request to the web server and receives a response from the web server, thereby enjoying a web service. In the first embodiment, the user device 40 (web client) enjoys services such as creation of a charging plan for the battery 20 and calculation of the annual power usage after the introduction of the battery 20 from the information processing device 10 (web server).

[0035] <Battery 20>

[0036] The plurality of batteries 20 of the first embodiment are assumed to be batteries 20 of EV (electric vehicle), but the battery of the present disclosure may also be a battery 20 of PHV (plug-in hybrid vehicle), a battery 20 of FCV (fuel cell vehicle), a battery 20 of construction machinery, a battery 20 of an electric bicycle, a battery 20 of a tram, a battery 20 of a UPS (uninterruptible power supply), etc. In addition, the plurality of batteries 20 of the first embodiment are assumed to be batteries 20 fixed to the above-mentioned devices and charged, but the battery of the present disclosure may also be a battery 20 that can be removed from the above-mentioned devices and can be charged in a single body.

[0037] <Charging device 50>

[0038] The charging device 50 charges one or more batteries 20. The charging device 50 includes: a charger 51 connected to one or more batteries 20 in a chargeable manner; and a control device 52 that switches the charging and charging stop of the battery 20 by the charger 51. In addition to switching the charging and charging stop, the control device 52 can also arbitrarily change the output power within the rated output power. The control device 52 causes the charger 51 to charge the battery 20 or stops the charging of the battery 20 by the charger 51 according to the control signal from the output unit 14 of the user device 40. The control device 52 can also automatically charge and stop the battery 20 connected to the charger 51 according to the charging plan provided by the information processing device 10. The multiple outputs of the charger 51 can be the same or different. For example, the multiple outputs of the charger 51 can be used for normal charging, fast charging, or a combination thereof.

[0039] <User device 40>

[0040] The user device 40 is an example of a terminal device of the present disclosure. The user device 40 is a general computer system having a processor and a memory, and is a personal computer, a smart phone, a tablet computer, etc. The user device 40 has: a communication unit 41 for communicating with the network 30, a display unit 42 such as a liquid crystal and an organic EL (Electro-Luminescence), an input unit 43 such as a keyboard and a mouse, and an output unit 44 for outputting a control signal to the charging device 50.

[0041] The user device 40 inputs various information in the browser screen provided by the information processing device 10, and sends various information to the information processing device 10. Specifically, the user device 40 sends the site power usage table 200, the site power contract information table 300, and the site vehicle information table 400 described later to the information processing device 10. In addition, the format of the various information sent by the user device 40 to the information processing device 10 can be used, for example, in the form of CSV (Comma-Separated Values), XML (Extensible Markup Language), etc. The following describes the details of the various tables sent by the user device 40 to the information processing device 10.

[0042] <Site Power Usage Meter 200>

[0043] Figure 2 200 according to the first embodiment. The site power usage table 200 (hereinafter referred to as the usage table 200) includes site power contract information ID 201 (in Figure 2In the example of "P0001"), the site power contract information ID 201 is the identification number of the power contract signed at the site, and the power usage information 202 indicates the power usage used at the site under the power contract. In the case where multiple power contracts are signed, multiple usage tables 200 are sent to the information processing device 10. In addition, the power usage information 202 includes: annual peak power 203, annual power usage 204, and power usage 205 in units of 30 minutes. The usage table 200 can be a record of past usage, a forecast of future usage, or a table combining the two. In the case of a record of past usage, at the site, a smart meter or the like measures and stores power usage. For example, a smart meter is a measuring device that measures and stores power usage every 30 minutes, files the record of power usage, and stores it as a usage table 200. In the case of a forecast of future usage, an operation management system or the like predicts power usage. For example, the operation management system predicts the amount of power used every 30 minutes based on the operation plan of the vehicle to be managed, files the predicted amount of power used, and stores it as the usage table 200 .

[0044] Peak power during the year 203 (in Figure 2 In the example, "51.2kW" is the maximum power value during the specified period. Figure 2 In the example, "183, 230 kWh" is the total amount of electricity used during a specified period. The power usage in units of 30 minutes 205 is the time series data of the power usage every 30 minutes. Figure 2 In the example, the power usage from 0:00 to 0:30 on January 1, 2021 is 9 kWh, the power usage from 0:30 to 1:00 on January 1, 2021 is 11 kWh, the power usage from 1:00 to 1:30 on January 1, 2021 is 10 kWh, etc. The annual peak power 203, the annual power usage 204, and the power usage in units of 30 minutes 205 can be determined based on the history of past usage, based on the prediction of future usage, or based on both.

[0045] The above-mentioned one-year period and the period of 30 minutes are examples, and these periods can be changed as appropriate. The same applies to the following.

[0046] <Site power contract information table 300>

[0047] Figure 3 3 is a diagram showing a site power contract information table 300 according to the first embodiment. The site power contract information table 300 includes: site power contract information ID 301 (in Figure 3In the example, "P0001"), power company name 302 (in Figure 3 ABC Power in the example), Contract Type (Plan Name) 303 (in Figure 3 The example is "commercial high voltage") and power price information 304. The power price information 304 includes: basic fee price 305, power price by time period 306, fuel cost adjustment price 307 and renewable energy power generation promotion tax price 308.

[0048] The basic charge unit price 305 is used to calculate the basic charge. In the first embodiment, assuming a volume-based contract, the basic charge is calculated by multiplying the annual peak power 203 by the basic charge unit price 305. The unit price of electricity charges may be determined individually for each season, day of the week, or time period.

[0049] The power contract can be a 24-hour flat rate contract or a rate contract where the rate varies according to the time period. In the case of a rate contract where the rate varies according to the time period, the unit price 306 of the power rate by time period is required. The unit price 306 of the power rate by time period indicates the unit price of the power charge for each time period. Figure 3 In the example, the unit price of electricity from 0:00 to 1:00 is 17.54 yen / kWh, the unit price of electricity from 1:00 to 2:00 is 17.54 yen / kWh, and so on.

[0050] The fuel cost adjustment unit price 307 is a value used to automatically adjust the electricity rate according to the change in fuel price, and the renewable energy power generation promotion tax unit price 308 is a unit price of a tax levied for the popularization of renewable energy.

[0051] <Station vehicle information table 400>

[0052] Figure 4 4 is a diagram showing a station vehicle information table 400 of the first embodiment. The station vehicle information table 400 stores information about EVs present at the station. The station vehicle information table 400 is prepared for each battery 20 of the vehicle and provided to the information processing device 10. The station vehicle information table 400 includes: a vehicle ID 401 (in Figure 4 In the example of "V0001"), the predetermined amount of power consumption per day 402 consumed by the battery 20 of the vehicle (in Figure 4 In the example of "25.0 kWh"), the start time of the chargeable time (chargeable start time 403) during which the battery 20 can be charged (in Figure 4 In the example of "18:00") and the end period (chargeable end time 404) (in Figure 4In the example of "6:00", the charger ID 405 identifying the charger 51 that charges the battery 20 (in Figure 4 In the example of "C0001"), and the charger output 406 as the output of the charger 51 (in Figure 4 In the example of FIG. 4 , the charging start time 403 and the charging end time 404 are assumed to specify a specific time period during which charging is possible, but only the length of the time during which charging is possible may be specified.

[0053] In the first embodiment, it is assumed that the battery 20 of the EV is charged, so the vehicle ID 401 is included in the station vehicle information table 400, but when the EV is equipped with multiple batteries 20 or when charging a battery 20 other than the EV, a battery ID for identifying the battery 20 may be used instead of the vehicle ID 401.

[0054] The power consumption 402 may be calculated based on the travel distance and travel time of each day of the scheduled EV travel input by the user, or the power consumption 402 may be directly input by the user.

[0055] In addition, the charger 51 for charging the battery 20 is allocated in advance to each battery 20 based on the power consumption 402, the chargeable time (chargeable start time 403, chargeable end time 404), and the output of the charger 51. In addition, the allocation of the battery 20 and the charger 51 can be one-to-one, one-to-many, many-to-one, or many-to-many.

[0056] <Information processing device 10>

[0057] The information processing device 10 is an example of a charging plan making device of the present disclosure. The information processing device 10 makes a charging plan for a plurality of batteries 20 at one or more sites that have signed one or more power contracts. The information processing device 10 is a computer system having a processor and a memory, and is a cloud server, a local server, etc. Figure 1A As shown, the information processing device 10 includes: a processing unit 11 for performing various information processing, a storage unit 12 for storing a program 12a and various tables 12b, an input unit 13 such as a keyboard and a mouse, an output unit 14 for outputting information to an external storage device, a display unit 15 such as a liquid crystal and an organic EL (Electro-Luminescence), and a communication unit 16 for communicating with a network 30. The storage unit 12 is a large-capacity storage medium such as an HDD (hard disk drive) or an SSD (solid state drive), and stores a program 12a (hereinafter referred to as a charging plan making program) for making a charging plan for the battery 20 and various tables 12b. The various tables 12b include: the above-mentioned usage table 200, the site power contract information table 300, and the site vehicle information table 400.

[0058] <Processing unit 11>

[0059] Here, the details of the processing unit 11 will be described. Figure 1B 1 is a hardware block diagram and a functional block diagram of the processing unit 11 according to the first embodiment. Figure 1B As shown in (a), the processing unit 11 has: a processor 11a, a main storage unit 11b, an auxiliary storage unit 11c, an input / output I / F 11d, and a communication I / F 11e. The processor 11a is a CPU (Central Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), etc. I / F is the abbreviation of interface. The main storage unit 11b is a DRAM (Dynamic Random Access Memory), etc. The auxiliary storage unit 11c is a ROM (Read Only Memory), etc. The input / output I / F 11d is communicatively connected to the input unit 13, the output unit 14, and the display unit 15. In addition, the communication I / F 11e is communicatively connected to the communication unit 16.

[0060] The processor 11a executes the program 12a, and the processing unit 11 performs various functions. Figure 1B As shown in (b) of FIG. 1 , the processing unit 11 that executes the program 12a (charging plan creation program) for creating a charging plan functions as a receiving unit 11f, a setting unit 11g, an output unit 11h, a creation unit 11i, and a display unit 11j.

[0061] The receiving unit 11f receives the power usage 205 in units of 30 minutes of the usage table 200 as the power usage at the station. In addition, the receiving unit 11f receives the power consumption 402 of the station vehicle information table 400 as the power consumption per day consumed by the battery 20. In addition, the receiving unit 11f receives the chargeable start time 403 and the chargeable end time 404 of the station vehicle information table 400 as the chargeable time during which the battery 20 can be charged.

[0062] In addition, the receiving unit 11f receives the time-zone-specific electricity charge unit price 306 of the site power contract information table 300 as the time-zone-specific electricity price information of the power contract.

[0063] Setting unit 11g sets annual peak power 203 of usage meter 200 as the peak power used at the site. Setting unit 11g may also set the maximum power usage based on power usage 205 in 30-minute units of usage meter 200 as the peak power used at the site.

[0064] The preparation unit 11i prepares a charging plan for the battery 20 for charging with the power consumption (e.g., the power consumption 402 (25.0 kWh)) so as not to exceed the set peak value (e.g., the annual peak power 203 (51.2 kW)) according to the chargeable time (e.g., the chargeable start time 403 (18:00) to the chargeable end time 404 (6:00)). For example, the preparation unit 11i prepares the charging plan table 500 as the charging plan for the battery 20. The details of the charging plan table 500 will be described later.

[0065] The production unit 11i also produces a charging plan (cost-controlled charging plan) for the battery 20 for charging with the consumed electricity amount (for example, the consumed electricity amount 402 (25.0 kWh)) according to the chargeable time (for example, the chargeable start time 403 (18:00) to the chargeable end time 404 (6:00)) in a manner that minimizes the electricity charge calculated using the unit price information (for example, "unit price of electricity by time period 306: 17.54 yen / kWh, 17.54 yen / kWh, ...").

[0066] The output unit 11h outputs the site annual power usage table 700 according to the power contract. Specifically, the output unit 11h calculates the predicted total power usage for a predetermined period (e.g., 1 year) at the site by multiplying the charging time of each vehicle by the output of the charger 51 assigned to the vehicle. The details of the site annual power usage table 700 will be described later.

[0067] The display unit 11 j displays the time series data of the power usage (forecast) at the site on the display unit 42 of the user device 40 using the power usage information 202 and the created charging schedule table 500 .

[0068] <Charging schedule 500>

[0069] Figure 5 1 is a diagram showing a charging schedule 500 according to the first embodiment. The charging schedule 500 is created by the creation unit 11i described above. The charging schedule 500 is created for each vehicle. The charging schedule 500 includes a vehicle ID 501 (in Figure 5 In the example of , "V0001" ) and a charging time 502 indicating the time for charging the battery 20 of the vehicle. Figure 5In the example of FIG. 502 , “1” indicates the time for charging the battery 20, and “0” indicates the time for stopping charging the battery 20. One value (“1” or “0”) of the charging time 502 is, for example, a value every 30 minutes.

[0070] <Charging plan screen display example>

[0071] Figure 6 This is a screen display example 600 of the charging plan according to the first embodiment. This screen display example 600 is displayed on the display unit 42 of the user device 40. The screen display example 600 of the charging plan is an image showing the time when the battery 20 is charged for each vehicle.

[0072] <Site annual electricity usage table 700>

[0073] Figure 7 700 of the first embodiment. The site annual power usage table 700 includes a site power contract information ID 701 and predicted power usage information 702 indicating the power usage used at the site under the power contract. In addition, the power usage information 702 includes annual peak power 703, annual power usage 704, and power usage in units of 30 minutes 705.

[0074] Peak power during the year 703 (in Figure 7 In the example, "51.2kW" is the maximum power value predicted for the next year. If a charging plan is created so as not to exceed the set peak value (for example, the annual peak power of 203 (51.2kW)), Figure 7 The annual peak power is 703 and Figure 2 The annual peak power is 203 the same.

[0075] Annual electricity consumption 704 (in Figure 7 In the example, 256, 220 kWh) is the total electricity consumption forecast for the next year. Figure 2 The total of the annual power usage 204 and the predicted amount of power used for charging the battery 20 in the next year.

[0076] The 30-minute power usage 705 is time series data of the predicted power usage of the site every 30 minutes. Figure 7 In the example, the power usage from 0:00 to 0:30 on January 1, 2022 is 12 kWh, the power usage from 0:30 to 1:00 on January 1, 2022 is 14 kWh, the power usage from 1:00 to 1:30 on January 1, 2022 is 13 kWh, and so on.

[0077] <Example of the screen display of annual electricity usage of a site>

[0078] Figure 8 This is a screen display example 800 of time-series data of annual power usage of a site according to the first embodiment. Figure 8 The screen display example 800 is displayed on the display unit 42 (Web browser) of the user device 40, for example. Figure 8 The screen display example 800 includes: annual power usage 801 (in Figure 8 In the example, 256, 220 kWh), annual peak power 802 (in Figure 8 2kW in the example), and a time series chart 803 showing the predicted power usage in a predetermined time unit (for example, 30 minutes). The power usage in chart 803 is obtained by adding the power usage at the station before the EV is introduced (the station power usage in the figure) and the power usage required for charging the EV battery 20 (EV charging power). The power usage displayed on the screen can be a history of past usage, a prediction of future usage, or a combination of the two.

[0079] like Figure 8 As shown, the display unit 11j selects and displays a predetermined period (e.g., 1 day) including the annual peak power 802. In addition, the display unit 11j can also select and display a desired period that does not include the annual peak power 802 according to the user's instruction. In addition, the display unit 11j can also use the usage meter 200, the site power contract information table 300, and the site annual power usage meter 700 to display the total annual electricity charges (predicted value) at the site when multiple batteries 20 are introduced.

[0080] <How to create a charging plan>

[0081] Next, refer to Fig. 9 as well as Fig.10 , the charging plan making method is described. The charging plan of the first embodiment is made in such a way that the peak power of the prescribed period is not exceeded (peak control charging plan), and the other charging plan is made in such a way that the annual electricity fee is the lowest (cost control charging plan). The processor 11a of the processing unit 11 executes the program 12a, thereby executing Fig. 9 as well as Fig.10 each step.

[0082] <How to create a charging plan so as not to exceed peak power (peak control charging plan)>

[0083] Fig. 9 This is a flowchart showing a method of creating a charging plan so as not to exceed the peak power in the first embodiment.

[0084] The receiving unit 11f receives the usage table 200 and the station vehicle information table 400 from the user device 40 (step S901).

[0085] Next, the setting unit 11g sets the target peak power according to the power usage during the specified period of the power contract. Specifically, the setting unit 11g sets the annual peak power 203 of the usage meter 200 as the target peak power (step S902). In addition, the setting unit 11g may set a power other than the annual peak power 203 of the usage meter 200 as the target peak power. For example, the setting unit 11g may set the power usage predicted in the future at the site as the target peak power.

[0086] Next, the preparation unit 11i prepares a charging plan for each vehicle so as not to exceed the set target peak power. Specifically, the preparation unit 11i prepares a charging plan for charging with the power consumption amount 402 so as not to exceed the set target peak power according to each chargeable time for each of the plurality of batteries 20 (step S903). The process of step S903 is repeated until each charging plan that does not exceed the target peak power is obtained.

[0087] Next, the output unit 11h calculates the power usage amount (EV charging power amount) required for charging the battery 20 of the vehicle by multiplying each chargeable time of the vehicle by the output of the charger 51 assigned to the vehicle (step S904).

[0088] Next, the output unit 11h adds the power usage required for charging the vehicle battery 20 (EV charging power) to the power usage at the site before the EV introduction (annual power usage 204), and outputs the annual power usage of the power contract after the EV introduction (step S905). The annual power usage is Figure 7 The annual electricity consumption is 704, Figure 8 Annual electricity consumption is 801.

[0089] The above-mentioned processing of steps S902 to S905 is performed according to the power contract. That is, when the site has signed multiple power contracts, the processing of steps S902 to S905 is performed according to the multiple power contracts, and the charging plan is prepared according to the multiple power contracts, and the annual power usage is output.

[0090] <How to create a charging plan (cost-control charging plan) to minimize annual electricity bills>

[0091] Fig.10 This is a flowchart showing a method of creating a charging plan so as to minimize the annual electricity bill in the first embodiment.

[0092] The receiving unit 11f receives the usage meter 200 and the site power contract information table 300 from the user device 40 (step S1001).

[0093] Next, the preparation unit 11i prepares a charging plan for each vehicle so as to minimize the annual electricity cost. Specifically, the preparation unit 11i prepares a charging plan for charging with each power consumption amount 402 according to each chargeable time so as to minimize the annual electricity cost for each of the plurality of batteries 20 (step S1002). The processing of step S1002 is repeated until a charging plan with the lowest annual electricity cost is obtained.

[0094] Next, the output unit 11h calculates the amount of electric power usage (EV charging electric power) required for charging the battery 20 of the vehicle by multiplying the charging time of each vehicle by the output of the charger 51 assigned to the vehicle (step S1003).

[0095] Next, the output unit 11h adds the power usage required for charging the vehicle's battery 20 (EV charging power) to the power usage at the site before EV introduction (annual power usage 204), and outputs the annual power usage of the power contract after EV introduction (step S1004).

[0096] The above-mentioned processing of steps S1002 to S1004 is performed according to the power contract. That is, when the site has signed multiple power contracts, the processing of steps S1002 to S1004 is performed according to the multiple power contracts, and the charging plan is prepared according to the multiple power contracts, and the annual power usage is output.

[0097] <Effects of the First Embodiment>

[0098] In the first embodiment, a peak control charging plan for charging a plurality of batteries 20 with the power consumption 402 can be prepared so as not to exceed the annual peak power 203 according to each chargeable time (chargeable start time 403 to chargeable end time 404). As a result, the peak power at the site can be suppressed, and the power consumption 402 consumed by the battery 20 can be charged within the chargeable time. In addition, in the case of an electricity contract in which the electricity price is determined by the peak power, the electricity price can be suppressed by suppressing the peak power.

[0099] In addition, in the first embodiment, a cost-controlled charging plan for charging the battery 20 with the consumed power amount 402 can be prepared according to the chargeable time so as to minimize the electricity cost for the prescribed period calculated using the unit price information. Thus, a cost-controlled charging plan different from the above-mentioned charging plan can be prepared. In this way, in the first embodiment, in addition to the charging plan prepared so as not to exceed the annual peak power 203, a cost-controlled charging plan prepared so as to minimize the electricity cost can be provided to the user device 40. The user can compare and refer to the charging plans prepared based on various criteria.

[0100] A charging plan for multiple batteries 20 for charging with each power consumption 402 is prepared in such a way that each charging time does not exceed the set annual peak power 203. Thus, when multiple batteries 20 are introduced to the site, a charging plan for multiple batteries 20 can be prepared in such a way that the annual peak power 203 does not exceed.

[0101] By creating a power plan for each of the plurality of power contracts, a user who has signed or plans to sign a plurality of power contracts can compare and study the charging plans of the battery 20 for each power contract.

[0102] In the first embodiment, by outputting the annual power usage 704 , the annual power usage 801 , and the total of the electricity bill (predicted value), the user can confirm the annual power usage and the total of the annual electricity bill predicted when a plurality of batteries 20 are introduced to the site.

[0103] By Figure 8 The time series data (graph 803) of the power usage at such a site is displayed on the display unit 42, and the user can easily understand the predicted transition of the power usage.

[0104] (Second Embodiment)

[0105] In addition, in the first embodiment described above, the case where all batteries of multiple EVs scheduled to be imported into the site are used with one power contract is described, but the multiple batteries scheduled to be imported into the site may be allocated to multiple power contracts for use. For example, the multiple batteries scheduled to be imported into the site may be allocated to the power contract signed at one demand location at the site and other power contracts signed at special demand locations at the site for use, or may be allocated to the power contract signed at the site and power contracts signed at other sites for use. In addition, the above-mentioned special demand location refers to a demand location that has a different power contract with one demand location. Here, a detailed description is given of the case where the multiple batteries scheduled to be imported into the site are allocated to the power contract signed at one demand location at the site and other power contracts signed at special demand locations at the site for use.

[0106] Fig.11 is a flowchart showing a method for preparing a charging plan according to the second embodiment. Fig.11 , the details of the charging plan preparation method of the second embodiment are described.

[0107] The receiving unit 11f receives the usage table 200 and the station vehicle information table 400 related to the power contract of a demand location from the user device 40 (step S1101). Next, the setting unit 11g sets the target peak power according to the power usage during the specified period of the power contract. Specifically, the setting unit 11g sets the annual peak power 203 of the usage table 200 as the target peak power (step S1102). In addition, the setting unit 11g can also set a target peak power other than the annual peak power 203 of the usage table 200. For example, the setting unit 11g can also set the power usage predicted in the future at the site as the target peak power. Next, the production unit 11i produces a charging plan for the vehicle in a manner not exceeding the set target peak power. Specifically, the production unit 11i produces a charging plan for charging the first battery 20 with the consumed power 402 in accordance with the chargeable time in a manner not exceeding the set target peak power (step S1103). Similarly, the batteries after the second battery 20 are manufactured according to the chargeable time so as not to exceed the set target peak power (step S1103).

[0108] However, among the multiple batteries 20, there are batteries for which a charging plan cannot be made because the target peak power is not exceeded. In this case, the production unit 11i produces a charging plan for charging at a special demand location for the battery 20 for which a charging plan cannot be made because the target peak power is not exceeded. The production unit 11i produces a charging plan for charging at a special demand location according to the chargeable time for the battery 20 for which a charging plan cannot be made because the target peak power is not exceeded (step S1104). Hereinafter, the processing of steps S1105 and S1106 is the same as that of the first embodiment described above, and therefore their description is omitted. When making a charging plan for charging at a special demand location, the peak power of the special demand location may also be set, and a charging plan for the battery 20 may be made in a manner not to exceed the peak power.

[0109] In the second embodiment, in addition to the power plan regarding the power contract concluded for one demand site, a power plan regarding the power contract concluded for a special demand site can be prepared.

[0110] In the second embodiment, a charging plan can be created in which a plurality of batteries to be introduced are allocated to different power contracts for operation.

[0111] (Variation Example)

[0112] The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments are embodiments described in detail in order to easily explain the present invention, and are not necessarily limited to having all the structures described. In addition, a part of the structure of a certain embodiment can be replaced with the structure of another embodiment, and the structure of another embodiment can be added to the structure of a certain embodiment. In addition, with respect to a part of the structure of each embodiment, other structures can be added, deleted, or replaced.

[0113] The information processing device 10 of the first embodiment illustrates an example of obtaining the usage meter 200 from the user device 40, but the information processing device 10 may obtain the power usage information 202 associated with the site power contract information ID 201 from the power company's server or from a server that manages the power usage information 202.

[0114] In addition, an example is described in which the information processing device 10 of the first embodiment obtains the site power contract information table 300 from the user device 40, but the information processing device 10 can obtain the power unit price information 304 associated with the site power contract information ID 301 from the power company's server, or from the server that manages the power unit price information 304.

[0115] In the first embodiment, the information processing device 10 provides the user device 40 with the charging plan for the plurality of batteries 20 . However, the user device 40 capable of executing the charging plan creation program may also create the charging plan for the plurality of batteries 20 .

[0116] Description of Reference Numerals

[0117] 1: Charging plan providing system, 10: Information processing device, 11: Processing unit, 11a: Processor, 11b: Main storage unit, 11c: Auxiliary storage unit, 11d: Input / output I / F, 11e: Communication I / F, 11f: Receiving unit, 11g: Setting unit, 11h: Output unit, 11i: Creation unit, 11j: Display unit, 12: Storage unit, 12a: Program, 12b: Table, 13: Input unit, 14: Output unit, 15: Display unit, 16: Communication unit, 20: Battery, 30: Network, 40: User device, 41: Communication unit, 42: Display unit, 43: Input unit, 44: Output unit, 50: Charging device, 51: Charger, 52: Control device

Claims

1. A charging plan making method, making a charging plan for multiple batteries at one or more sites that sign one or more power contracts, characterized in that: The charging plan making method has the following contents: receiving the amount of power used at the site, the predetermined amounts of power consumed by the plurality of batteries, and the respective available charging times for charging the plurality of batteries; setting a peak value of power used at the site according to the power usage; as well as A peak control charging plan for charging the plurality of batteries with the respective consumed power amounts is prepared according to the respective chargeable times so as not to exceed the set peak value.

2. The charging plan making method according to claim 1, characterized in that: The charging plan making method also has the following contents: receiving unit price information of the amount of electric power by time period of the electric power contract; and A cost-controlled charging plan for charging the plurality of batteries with the respective consumed power amounts is created according to the respective chargeable times so as to minimize the electricity fee for a predetermined period calculated using the unit price information.

3. The charging plan making method according to claim 1 or 2, characterized in that: The plurality of power contracts include a first power contract and a second power contract, The power usage includes a first usage indicating the power usage under the first power contract and a second usage indicating the power usage under the second power contract. The case of setting the peak value of the electric power includes a case of setting a first peak value according to the first usage amount and a case of setting a second peak value according to the second usage amount. The case of preparing the peak control charging plan includes the case of preparing a first peak control charging plan for charging the plurality of batteries with the respective power consumption amounts according to the respective chargeable times in a manner not exceeding the set first peak value, and the case of preparing a second peak control charging plan for charging the plurality of batteries with the respective power consumption amounts according to the respective chargeable times in a manner not exceeding the set second peak value.

4. The charging plan making method according to claim 3, characterized in that: The first power contract is a contract signed for one demand location at the site, and the second power contract is a contract signed for other demand locations at the site.

5. The charging plan making method according to claim 1 or 2, characterized in that: The charging plan preparation method further includes outputting a predicted total of power usage or a predicted total of power charges within a predetermined period at the site using the power contract and the peak control charging plan.

6. The charging plan making method according to claim 1 or 2, characterized in that: The charging plan preparation method further includes: displaying time series data of the power usage at the station on a display unit using the peak control charging plan.

7. A method for making a charging plan for multiple batteries at one or more sites that have signed one or more power contracts, characterized in that: The charging plan making method has the following contents: receiving the amount of power used at the site, the predetermined amounts of power consumed by the plurality of batteries, and the respective chargeable times during which the plurality of batteries can be charged; receiving unit price information of the electric power quantity by time period of the electric power contract; as well as A cost-controlled charging plan for charging the plurality of batteries with the respective consumed power amounts is created according to the respective chargeable times so as to minimize the electricity fee for a predetermined period calculated using the unit price information.

8. The charging plan making method according to claim 7, characterized in that: The plurality of power contracts include a first power contract and a second power contract, The power usage includes a first usage indicating the power usage under the first power contract and a second usage indicating the power usage under the second power contract. The case where the unit price information is accepted includes the case where the first unit price information of the electric energy by time period of the first electric energy contract is accepted and the case where the second unit price information of the electric energy by time period of the second electric energy contract is accepted, The situations in which the cost-controlled charging plan is prepared include the situation in which a first cost-controlled charging plan for charging the multiple batteries with the multiple power consumption amounts is prepared according to the multiple charging times in a manner that minimizes the electricity cost for the specified period calculated using the first unit price information, and the situation in which a second cost-controlled charging plan for charging the multiple batteries with the multiple power consumption amounts is prepared according to the multiple charging times in a manner that minimizes the electricity cost for the specified period calculated using the second unit price information.

9. The charging plan making method according to claim 8, characterized in that: The first power contract is a contract signed for one demand location at the site, and the second power contract is a contract signed for other demand locations at the site.

10. The charging plan making method according to claim 7, characterized in that: The charging plan preparation method further includes outputting a predicted total of power usage or a predicted total of power charges within a predetermined period at the site using the power contract and the rate-controlled charging plan.

11. The charging plan making method according to claim 7, characterized in that: The charging plan preparation method further includes: displaying time series data of the amount of power usage at the station on a display unit using the cost-controlled charging plan.

12. A charging plan making device for making a charging plan for a plurality of batteries at one or more sites that have signed one or more power contracts, characterized in that: The charging plan making device has: a receiving unit that receives the amount of power used at the site, each predetermined amount of power consumed by the plurality of batteries, and each chargeable time during which the plurality of batteries can be charged; a setting unit configured to set a peak value of power used at the site according to the power usage; as well as A preparation unit prepares a peak control charging plan for charging the plurality of batteries with the respective consumed power amounts according to the respective chargeable times so as not to exceed the set peak value.

13. The charging plan making device according to claim 12, characterized in that: The receiving unit further receives unit price information of the electric power amount in each time period of the electric power contract, The creation unit further creates a cost-controlled charging plan for charging the plurality of batteries with the respective consumed power amounts according to the respective chargeable times so as to minimize the electricity rate for a predetermined period calculated using the unit price information.

14. The charging plan making device according to claim 12 or 13, characterized in that: The plurality of power contracts include a first power contract and a second power contract, The power usage includes a first usage indicating the power usage under the first power contract and a second usage indicating the power usage under the second power contract. The setting unit sets a first peak value according to the first usage amount and sets a second peak value according to the second usage amount, The production unit produces a first peak-controlled charging plan for charging the multiple batteries with the respective power consumption amounts according to the respective chargeable times in a manner not exceeding the set first peak value, and produces a second peak-controlled charging plan for charging the multiple batteries with the respective power consumption amounts according to the respective chargeable times in a manner not exceeding the set second peak value.

15. The charging plan making device according to claim 14, characterized in that: The first power contract is a contract signed for one demand location at the site, and the second power contract is a contract signed for other demand locations at the site.

16. The charging plan making device according to claim 12 or 13, characterized in that: The charging plan making device further includes an output unit that outputs a predicted total of power usage or a predicted total of power charges in a predetermined period at the site using the power contract and the peak control charging plan.

17. The charging plan making device according to claim 12 or 13, characterized in that: The charging plan preparation device further includes a display unit that displays time series data of the amount of power usage at the station on a display unit using the peak control charging plan.

18. A charging plan making device for making a charging plan for a plurality of batteries at one or more sites that have signed one or more power contracts, characterized in that: The charging plan making device has: a receiving unit that receives the amount of power used at the site, the predetermined amounts of power consumed by the plurality of batteries, the respective chargeable times during which the plurality of batteries can be charged, and unit price information of the amount of power by time period of the power contract; as well as A creating unit creates a cost-controlled charging plan for charging the plurality of batteries with the respective consumed power amounts according to the respective chargeable times so as to minimize the electricity rate for a predetermined period calculated using the unit price information.

19. The charging plan making device according to claim 18, characterized in that: The plurality of power contracts include a first power contract and a second power contract, The power usage includes a first usage indicating the power usage under the first power contract and a second usage indicating the power usage under the second power contract. The unit price information includes first unit price information of the amount of electricity by time period of the first power contract and second unit price information of the amount of electricity by time period of the second power contract, The production unit produces a first cost-controlled charging plan for charging the multiple batteries with the respective power consumption amounts according to the respective charging times in a manner that minimizes the electricity cost for the specified period calculated using the first unit price information, and produces a second cost-controlled charging plan for charging the multiple batteries with the respective power consumption amounts according to the respective charging times in a manner that minimizes the electricity cost for the specified period calculated using the second unit price information.

20. The charging plan making device according to claim 19, characterized in that: The first power contract is a contract signed for one demand location at the site, and the second power contract is a contract signed for other demand locations at the site.

21. The charging plan making device according to claim 18, characterized in that: The charging plan making device further includes an output unit that outputs a predicted total of the amount of power usage or a predicted total of the electricity charges in a predetermined period at the site using the power contract and the rate-controlled charging plan.

22. The charging plan making device according to claim 18, characterized in that: The charging plan preparation device further includes a display unit that displays time series data of the amount of power usage at the station on a display unit using the fee-controlled charging plan.

23. A charging plan providing system, comprising: a charging plan making device for making a charging plan for a plurality of batteries at one or more sites having one or more power contracts; and a terminal device capable of communicating with the charging plan making device, characterized in that: The charging plan making device has: a receiving unit that receives the amount of power used at the site, each predetermined amount of power consumed by the plurality of batteries, and each chargeable time during which the plurality of batteries can be charged; a setting unit configured to set a peak value of power used at the site according to the power usage; a preparation unit that prepares a peak control charging plan for charging the plurality of batteries with the respective consumed power amounts according to the respective chargeable times so as not to exceed the set peak value; and a sending unit, which sends the peak control charging plan to the terminal device, The terminal device comprises: a receiving unit configured to receive the peak control charging plan; and An output unit outputs the peak control charging plan received by the receiving unit.

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