WO2013115244A1 - Charging-time-predicting device, charging-time-predicting method, and program - Google Patents

Charging-time-predicting device, charging-time-predicting method, and program Download PDF

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Publication number
WO2013115244A1
WO2013115244A1 PCT/JP2013/052032 JP2013052032W WO2013115244A1 WO 2013115244 A1 WO2013115244 A1 WO 2013115244A1 JP 2013052032 W JP2013052032 W JP 2013052032W WO 2013115244 A1 WO2013115244 A1 WO 2013115244A1
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WIPO (PCT)
Prior art keywords
charging
information
holding unit
charger
charging time
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PCT/JP2013/052032
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French (fr)
Japanese (ja)
Inventor
雄一朗 福林
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日本電気株式会社
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Publication of WO2013115244A1 publication Critical patent/WO2013115244A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/66—Ambient conditions
    • B60L2240/662—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/58—Departure time prediction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the present invention relates to a charging time prediction device, a charging time prediction method, and a program.
  • the current electric vehicle has a large capacity of the battery, and even if a quick charger is used, it takes about 20 to 30 minutes to charge, so the user leaves the vehicle while charging. In many cases, it returns in accordance with the charging end time expected by the charger. Therefore, if the expected end time is earlier than the actual time, the user will be further waited. Conversely, if the expected end time is later than the actual time, the user who is going to use the next time will be waited. Thus, for efficient operation of the quick charger, it is desired to accurately predict and provide the charging end time.
  • a reception unit that receives information including the type of battery mounted on the electric vehicle, the remaining charge amount, and the desired charge amount transmitted from the electric vehicle, and information received by the reception unit
  • a charging stand including a calculation device that calculates a charging waiting time until charging is completed based on the above and a transmission unit that transmits the charging waiting time calculated by the calculation device to an electric vehicle.
  • the charging waiting time is calculated based only on information obtained from the electric vehicle, it may be different from the actual charging time. For example, when the maximum output power of the charger is controlled by the time zone and the situation for the purpose of leveling the power usage, the charging time varies depending on the time zone. Also, if the electricity rate changes depending on the time zone and conditions, even if the amount of charge is specified by the amount, the amount of power that can be charged changes depending on the setting of the electricity rate at that time, so the time until the end of charging changes To do.
  • an object of the present invention is to provide a charging time prediction device capable of predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.
  • the charging time prediction device represents a remaining battery level information holding unit that holds information on a remaining charge level that represents an amount of power remaining in a rechargeable battery of the vehicle, and represents an amount of power that can be charged in the rechargeable battery of the vehicle.
  • a battery capacity information holding unit that holds battery capacity information
  • a temperature information holding unit that holds temperature information of an environment in which charging is performed
  • a charger operation information holding unit that holds information on an operation policy of the charger
  • a charging model holding unit that holds a charging model that represents a relationship between a parameter relating to a rechargeable battery of the vehicle or the charger and a charging time, and at least one of the remaining charge, the battery capacity, and the temperature information is a parameter
  • a charging time calculation unit that predicts a charging time using the charging model, and the charging time calculation unit adjusts the charging model in consideration of the operation policy, and And performs prediction of electrodeposition time.
  • the method for predicting a charging time includes a step of obtaining information on a remaining charge amount representing an amount of power remaining in a rechargeable battery of a vehicle from a battery remaining amount information holding unit, and a battery capacity information holding unit, Charging from the battery capacity information representing the amount of power that can be charged to the rechargeable battery of the vehicle, the temperature information holding unit from the temperature information holding unit, and the charger operation information holding unit Obtaining information on the operation policy of the battery, obtaining a charge model representing a relationship between a parameter related to the rechargeable battery of the vehicle or the charger and the charge time from the charge model holding unit, the remaining charge, Predicting a charging time using the charging model using at least one of the battery capacity and the temperature information as a parameter, and in the step of predicting the charging time, the operation After adjusting the charging model in consideration of the Rishi, it performs a prediction of the charging time.
  • the program which concerns on this invention represents the electric energy which can charge the battery remaining charge information holding part which hold
  • the charging time calculation unit adjusts the charging model in consideration of the operation policy. From to, and performs a prediction of the charging time.
  • a charging time predicting apparatus capable of predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.
  • FIG. 1 is a block diagram showing a configuration of a charging time prediction apparatus 10 according to Embodiment 1 of the present invention.
  • the charging time prediction apparatus 10 includes a battery remaining amount information holding unit 101, a battery capacity information holding unit 102, a temperature information holding unit 103, a charger operation information holding unit 104, a charging model holding unit 105, and a charging.
  • a time calculation unit 106 is provided.
  • the charging time prediction device 10 applies a dedicated or general-purpose computer including a CPU, a memory such as a ROM and a RAM, an external storage device for storing various information, an input interface, an output interface, a communication interface, and a bus connecting them. Can do.
  • the charging time prediction device 10 may be configured by a single computer or may be configured by a plurality of computers connected to each other via a communication line.
  • the battery remaining amount information holding unit 101, the battery capacity information holding unit 102, the temperature information holding unit 103, the charger operation information holding unit 104, the charging model holding unit 105, and the charging time calculation unit 106 are provided inside the vehicle or the charger. It may be mounted on a remote device connected to a charger or a vehicle via a network.
  • the charging time calculation unit 106 corresponds to a function module realized by the CPU executing a predetermined program stored in a ROM or the like.
  • the remaining battery information holding unit 101, the battery capacity information holding unit 102, the temperature information holding unit 103, the charger operation information holding unit 104, and the charging model holding unit 105 are implemented by a memory such as a ROM or a RAM, or an external storage device.
  • the battery remaining amount information holding unit 101 holds information representing the amount of power remaining in the rechargeable battery of the vehicle. This information is sent to the charging time calculation unit 106 and used to calculate the charging time. Specifically, it is information such as a charging rate indicating how much of the maximum charged amount of the rechargeable battery is charged. Further, the information held by the battery remaining amount information holding unit 101 may be the value of the charged electric power itself. In this case, the charging rate can be calculated using the information on the charging capacity transmitted from the battery capacity information holding unit 102.
  • the battery capacity information holding unit 102 holds information indicating the amount of power that can be charged in the rechargeable battery of the vehicle. This information is transmitted to the charging time calculation unit 106 and used for calculating the charging time. Specifically, it is information on the electric energy expressed in units of kWh.
  • the temperature information holding unit 103 holds temperature information of an environment where charging is performed. This information is transmitted to the charging time calculation unit 106 and used for calculating the charging time. Specifically, the temperature measured by the vehicle that performs charging and the temperature measured by the charger are used as information. Further, the temperature inside the rechargeable battery may be acquired from the rechargeable battery and used as temperature information. However, the charging model used for estimating the charging time differs between the case of using the environmental temperature and the case of using the temperature inside the rechargeable battery.
  • the temperature acquisition environment held by the temperature information holding unit 103 and the temperature acquisition environment assumed by the model held by the charging model holding unit 105 need to match. Note that the measurement method is not limited as long as the temperature information held by the temperature information holding unit 103 is temperature information of the environment to be charged. For example, what was acquired with the thermometer with which the charger was equipped may be acquired with the thermometer with which the vehicle was equipped. Moreover, what was acquired from the weather observation data of the position near a charger may be used.
  • the charger operation information holding unit 104 holds charger operation policy information such as charger operation settings and output power schedules. This information is transmitted to the charging time calculation unit 106, and the charging time calculation unit 106 applies the charging model supplied from the charging model holding unit 105 to the operation policy obtained to calculate the charging time.
  • the charging upper limit charging rate is a reference charging rate at which it is determined that charging is completed.
  • the charger ends charging when the charging rate of the rechargeable battery reaches the charging upper limit charging rate.
  • the charging upper limit charging rate is a value determined by an operator who operates the charger, for example, and a different value may be set for each charger. Therefore, for example, even if charging is started with the same remaining charge, the time required for charging becomes longer when the charging upper limit charging rate is larger.
  • the charging upper limit electric energy is a reference electric energy for determining that charging is completed.
  • the charger ends charging when the amount of power charged in the rechargeable battery reaches the upper limit of charge power.
  • a charge upper limit power amount is set.
  • the electricity rate can be calculated from the amount of electricity, so that the charging upper limit electricity rate can be specified as the operation policy.
  • FIG. 2 is an example of the output power schedule of the charger, and shows the maximum output power that can be output by the charger for each time zone.
  • the maximum output power is limited to 25 kWh from 13:00 to 17:00, and it can output up to 50 kWh in other time zones. Therefore, charging in the time zone from 13:00 to 17:00 takes longer to charge than in the case of charging the same amount of power in other time zones.
  • Such an output power schedule is a policy set when it is desired to limit the output power during the daytime when there is a great demand for power.
  • FIG. 3 is an example of the electricity rate table, and shows the electricity rate for each time zone.
  • an electric charge of 30 yen per kWh is charged from 13:00 to 17:00, and an electric charge of 15 yen is charged per kWh in other time zones. Therefore, if charging is performed during the time period from 13:00 to 17:00, the electricity charge is higher than when charging the same amount of power during other time periods.
  • Such an electricity rate table is a policy that is set when, for example, it is desired to suppress the amount of electricity used in the daytime when there is a great demand for electricity.
  • the charging model holding unit 105 holds a charging model that represents the relationship between battery parameters, charger operating parameters, and charging time.
  • FIG. 4 is a diagram illustrating an example of a charging model. The example of FIG. 4 represents the relationship between the charging rate (starting charging rate) of the rechargeable battery at the time of starting charging and the charging time until the charging upper limit charging rate is reached.
  • the charging upper limit charging rate is 100%, and when charging is started from the charging rate of 50%, it takes about 2600 seconds to reach the charging rate of 100%.
  • the charging time in this model varies depending on parameters such as battery capacity, temperature information during charging, and maximum output power of the charger. The larger the battery capacity, the longer the charging time. In general, the lower the temperature, the longer the charging time.
  • the charging model can be estimated using a technique such as linear regression or neural network.
  • the battery capacity, temperature, and maximum output power parameters are set to various values, and changes in charging time and charging rate when charging is actually performed are recorded.
  • a charging model can be obtained by executing learning using a neural network and estimating a learning coefficient.
  • the charging time calculation unit 106 includes the remaining battery level information acquired from the remaining battery level information holding unit 101, the battery capacity information acquired from the battery capacity information holding unit 102, the temperature information acquired from the temperature information holding unit 103, the charging Using the charger operation policy acquired from the charger operation information holding unit 104 as a parameter, the charging model acquired from the charging model holding unit 105 is adjusted according to the parameter, and the time required for charging is calculated using the adjusted charging model. .
  • the operation of the charging time calculation unit 106 will be described using a specific example.
  • a charging model adjustment method will be described by taking as an example a case where only the charging upper limit charging rate is set as the operation policy.
  • the charging time calculation unit 106 acquires a charging model that matches the acquired battery capacity and temperature information from the charging model holding unit 105.
  • a function representing a charging model as shown in FIG. 4 is represented by t (s).
  • s is a charging start charging rate
  • t is a charging time until the charging rate reaches 100%. That is, the time from the start of charging to reaching 100% when the charging rate is 50% can be expressed as t (0.5).
  • t (1.0) 0 from the definition.
  • the charging time calculation unit 106 can obtain a charging model adjusted according to an arbitrary charging upper limit charging rate by using the above equation (1).
  • FIG. 5 shows an example of a charging model when the upper limit charging rate is 80%.
  • FIG. 6 shows an example of a charging model that represents the relationship between the remaining power at the start of charging and the charging time when the battery capacity is 24.0 kWh and the charging upper limit power is 5 kWh.
  • the operation of the charging time calculation unit 106 when the output power schedule is set as the operation policy will be described.
  • the output power of the charger becomes 1 / n
  • the charging start time is 14:00
  • the maximum output is 25 kW, which is half of 50 kW, so the charging time is twice that of 50 kW. .
  • the maximum output power does not change during charging, and when it is lower than that, charging starts. After 600 seconds, the maximum output is halved and the charging time becomes longer.
  • the dotted line in the figure represents the charging time when the maximum output does not change during charging, and as shown in the figure, the charging time is shorter than when the maximum output power is halved after 600 seconds from the start. ing.
  • the charging time can be calculated in the same manner as when the charging upper limit electric energy is set.
  • FIG. 8 is a flowchart of the operation of the charging time calculation unit 106.
  • the charging time calculation unit 106 reads battery remaining amount information from the battery remaining amount information holding unit 101 (step S101).
  • the charging time calculation unit 106 reads battery capacity information from the battery capacity information holding unit 102 (step S102), and further reads temperature information from the temperature information holding unit 103 (step S103).
  • the charging time calculation unit 106 reads the charger operating policy from the charger operation information holding unit 104 (step S104), and acquires the charging model from the charging model holding unit 105 (step S105). afterwards.
  • the charging time calculation unit 106 adjusts the charging model according to the acquired operation policy (step S106).
  • the charging time calculation unit 106 calculates the charging time using the adjusted charging model and the acquired information (step S107).
  • the charging time is predicted using the charging model using the information on the remaining charge amount, the battery capacity, and the charging temperature as parameters.
  • the charging time is predicted after adjusting the charging model in consideration of the charging operation policy such as the charging upper limit charging rate, the charging upper limit power amount, the charger output power schedule, and the charge table.
  • the charging operation policy such as the charging upper limit charging rate, the charging upper limit power amount, the charger output power schedule, and the charge table.
  • a battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
  • a battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
  • a temperature information holding unit that holds temperature information of an environment in which charging is performed;
  • a charger operation information holding unit for holding charger operation policy information;
  • a charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time;
  • a charge time calculation unit that predicts a charge time using the charge model using at least one of the remaining charge, the battery capacity, and the temperature information as a parameter, and
  • the charging time calculation unit is configured to predict the charging time after adjusting the charging model in consideration of the operation policy.
  • the said charge model represents the relationship between the charging rate of the rechargeable battery at the time of charge start, the temperature of the environment where charging is performed, the output power of the charger, and the charging time. Charging time prediction device.
  • the said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the upper limit charging rate in charge.
  • the said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the upper limit electric energy in charge.
  • the said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the output electric power schedule of a charger.
  • the said operation policy is a charge time prediction apparatus of Additional remark 1 or 2 which defines an electricity bill table.
  • the said temperature information is temperature information measured by the thermometer with which the said charger was equipped, The charging time prediction apparatus in any one of Additional remark 1 to 6 characterized by the above-mentioned.
  • thermometer provided inside the rechargeable battery.
  • the said temperature information is temperature information obtained from the weather data observed near the said charger, The charging time prediction apparatus in any one of Additional remark 1 to 6 characterized by the above-mentioned.
  • the process of acquiring the information of the charge remaining amount showing the electric energy remaining in the rechargeable battery of a vehicle from a battery remaining charge information holding part Obtaining battery capacity information representing the amount of power that can be charged to the rechargeable battery of the vehicle from the battery capacity information holding unit; Acquiring temperature information of the environment where charging is performed from the temperature information holding unit; A step of obtaining charger operation policy information from the charger operation information holding unit; From the charging model holding unit, obtaining a charging model representing a relationship between a charging time and a parameter related to the rechargeable battery of the vehicle or the charger; and Using at least one of the remaining charge, the battery capacity, and the temperature information as parameters, predicting a charging time using the charging model, The charging time prediction method, wherein in the step of predicting the charging time, the charging time is predicted after adjusting the charging model in consideration of the operation policy.
  • a battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
  • a battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
  • a temperature information holding unit that holds temperature information of an environment in which charging is performed;
  • a charger operation information holding unit for holding charger operation policy information;
  • a charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time; Using at least one of the remaining charge amount, the battery capacity, and the temperature information as parameters, and functioning as a charge time calculation unit that predicts a charge time using the charge model, The charging time calculation unit adjusts the charging model in consideration of the operation policy, and then predicts the charging time.
  • the present invention is suitable for predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention is provided with: a remaining-cell-power-information-retaining unit for retaining information on remaining charging power, the information indicating the amount of power remaining in a vehicle rechargeable cell; a cell-capacity-information-retaining unit for retaining information on cell capacity, the information indicating the amount of power with which the vehicle rechargeable cell can be charged; a temperature-information-retaining unit for retaining temperature information on the environment where charging is to be carried out; a charger-operation-information-retaining unit for retaining information on an charger operation policy; a charging-model-retaining unit for retaining a charging model indicative of a relationship between charging time and a parameter pertaining to the vehicle rechargeable cell or the charger; and a charging time calculator for predicting the charging time by using the charging model, the parameter being at least the charging power, the cell capacity, or the temperature information. The charging time calculator predicts the charging time after the charging model has been adjusted with regard to the operation policy.

Description

充電時間予測装置、充電時間予測方法、及びプログラムCharging time prediction device, charging time prediction method, and program
　本発明は、充電時間予測装置、充電時間予測方法、及びプログラムに関する。 The present invention relates to a charging time prediction device, a charging time prediction method, and a program.
　現在の電気自動車向け急速充電器は高価であるため、個人で所有することは少なく、公共の場所や店舗などに設置されているものを、不特定多数の利用者が共同で利用することが多い。したがって、急速充電器の効率的な運用のためには、利用者は充電が終了したら、できるだけすみやかに車両を移動させ、他の利用者を待たせないことが必要不可欠である。 Current quick chargers for electric vehicles are expensive, so they are rarely owned by individuals, and are often installed in public places and stores by many unspecified users. . Therefore, for efficient operation of the quick charger, it is indispensable for the user to move the vehicle as soon as possible after charging is completed and not to wait for other users.
　しかし、現在の電気自動車は、搭載されている電池の容量が大きく、急速充電器を用いても充電に２０～３０分ほどの時間がかかるので、利用者は、充電中は自動車のそばを離れ、充電器によって予想される充電終了時刻に合わせて戻ってくることが多い。したがって、予想終了時刻が実際よりも早かった場合は、利用者をさらに待たせることになり、逆に実際よりも遅い場合は、次に利用しようとしている利用者を待たせることになってしまう。このように、急速充電器の効率的な運用のためには、正確な充電終了時刻の予測と提供が望まれる。 However, the current electric vehicle has a large capacity of the battery, and even if a quick charger is used, it takes about 20 to 30 minutes to charge, so the user leaves the vehicle while charging. In many cases, it returns in accordance with the charging end time expected by the charger. Therefore, if the expected end time is earlier than the actual time, the user will be further waited. Conversely, if the expected end time is later than the actual time, the user who is going to use the next time will be waited. Thus, for efficient operation of the quick charger, it is desired to accurately predict and provide the charging end time.
　例えば、特許文献１には、電気自動車から送信された該電気自動車に搭載されているバッテリの種類、充電残量および充電希望量を含む情報を受信する受信部と、受信部で受信された情報に基づいて充電が完了するまでの充電待ち時間を算出する演算装置と、演算装置で算出された充電待ち時間を電気自動車に送信する送信部を備えた充電スタンドが開示されている。 For example, in Patent Document 1, a reception unit that receives information including the type of battery mounted on the electric vehicle, the remaining charge amount, and the desired charge amount transmitted from the electric vehicle, and information received by the reception unit There is disclosed a charging stand including a calculation device that calculates a charging waiting time until charging is completed based on the above and a transmission unit that transmits the charging waiting time calculated by the calculation device to an electric vehicle.
特開２０１１－２４３３５号公報JP 2011-24335 A
　しかし、特許文献１に記載の方法では、電気自動車から得られる情報のみに基づいて充電待ち時間を算出しているため、実際の充電時間とは異なる場合がある。
　例えば、電力使用量の平準化などを目的として、充電器の最大出力電力が時間帯や状況によりコントロールされている場合には、時間帯によって充電時間が変化する。また、電気料金が時間帯や条件により変化する場合には、金額で充電量を指定しても、その時の電気料金の設定によって充電できる電力量の値が変わるので、充電終了までの時間は変化する。 However, in the method described in Patent Document 1, since the charging waiting time is calculated based only on information obtained from the electric vehicle, it may be different from the actual charging time.
For example, when the maximum output power of the charger is controlled by the time zone and the situation for the purpose of leveling the power usage, the charging time varies depending on the time zone. Also, if the electricity rate changes depending on the time zone and conditions, even if the amount of charge is specified by the amount, the amount of power that can be charged changes depending on the setting of the electricity rate at that time, so the time until the end of charging changes To do.
　そこで、本発明の目的は、電気自動車から得られる情報以外の情報や条件も考慮して、充電にかかる時間を予測することが可能な充電時間予測装置を提供することにある。 Therefore, an object of the present invention is to provide a charging time prediction device capable of predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.
　本発明に係る充電時間予測装置は、車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、充電が行われる環境の温度情報を保持する温度情報保持部と、充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、を備え、前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行うものである。 The charging time prediction device according to the present invention represents a remaining battery level information holding unit that holds information on a remaining charge level that represents an amount of power remaining in a rechargeable battery of the vehicle, and represents an amount of power that can be charged in the rechargeable battery of the vehicle. A battery capacity information holding unit that holds battery capacity information, a temperature information holding unit that holds temperature information of an environment in which charging is performed, a charger operation information holding unit that holds information on an operation policy of the charger, and A charging model holding unit that holds a charging model that represents a relationship between a parameter relating to a rechargeable battery of the vehicle or the charger and a charging time, and at least one of the remaining charge, the battery capacity, and the temperature information is a parameter A charging time calculation unit that predicts a charging time using the charging model, and the charging time calculation unit adjusts the charging model in consideration of the operation policy, and And performs prediction of electrodeposition time.
　本発明に係る充電時間予測方法は、電池残量情報保持部から、車両の充電池に残されている電力量を表す充電残量の情報を取得する工程と、電池容量情報保持部から、前記車両の充電池に充電できる電力量を表す電池容量の情報を取得する工程と、温度情報保持部から、充電が行われる環境の温度情報を取得する工程と、充電器運用情報保持部から、充電器の運用ポリシーの情報を取得する工程と、充電モデル保持部から、前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを取得する工程と、前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する工程と、を備え、前記充電時間を予測する工程では、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行うものである。 The method for predicting a charging time according to the present invention includes a step of obtaining information on a remaining charge amount representing an amount of power remaining in a rechargeable battery of a vehicle from a battery remaining amount information holding unit, and a battery capacity information holding unit, Charging from the battery capacity information representing the amount of power that can be charged to the rechargeable battery of the vehicle, the temperature information holding unit from the temperature information holding unit, and the charger operation information holding unit Obtaining information on the operation policy of the battery, obtaining a charge model representing a relationship between a parameter related to the rechargeable battery of the vehicle or the charger and the charge time from the charge model holding unit, the remaining charge, Predicting a charging time using the charging model using at least one of the battery capacity and the temperature information as a parameter, and in the step of predicting the charging time, the operation After adjusting the charging model in consideration of the Rishi, it performs a prediction of the charging time.
　本発明に係るプログラムは、コンピュータを、車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、充電が行われる環境の温度情報を保持する温度情報保持部と、充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、して機能させ、前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行うものである。 The program which concerns on this invention represents the electric energy which can charge the battery remaining charge information holding part which hold | maintains the information of the charge remaining amount showing the electric energy remaining in the rechargeable battery of a vehicle, and the said battery rechargeable battery A battery capacity information holding unit that holds battery capacity information, a temperature information holding unit that holds temperature information of an environment in which charging is performed, a charger operation information holding unit that holds information on an operation policy of the charger, and A charging model holding unit that holds a charging model that represents a relationship between a parameter relating to a rechargeable battery of the vehicle or the charger and a charging time, and at least one of the remaining charge, the battery capacity, and the temperature information is a parameter As a charging time calculation unit that predicts a charging time using the charging model, the charging time calculation unit adjusts the charging model in consideration of the operation policy. From to, and performs a prediction of the charging time.
　本発明によれば、電気自動車から得られる情報以外の情報や条件も考慮して、充電にかかる時間を予測することが可能な充電時間予測装置を提供することができる。 According to the present invention, it is possible to provide a charging time predicting apparatus capable of predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.
本発明の実施の形態による、充電時間予測装置の構成を示すブロック図。The block diagram which shows the structure of the charging time estimation apparatus by embodiment of this invention. 本発明の実施の形態による、充電器の出力電力スケジュールの一例を示す図。The figure which shows an example of the output electric power schedule of the charger by embodiment of this invention. 本発明の実施の形態による、電気料金テーブルの一例を示す図。The figure which shows an example of the electricity bill table by embodiment of this invention. 本発明の実施の形態による、充電モデルの一例を説明する図。The figure explaining an example of the charge model by embodiment of this invention. 本発明の実施の形態による、充電モデルの一例を説明する図。The figure explaining an example of the charge model by embodiment of this invention. 本発明の実施の形態による、充電モデルの一例を説明する図。The figure explaining an example of the charge model by embodiment of this invention. 本発明の実施の形態による、充電モデルの一例を説明する図。The figure explaining an example of the charge model by embodiment of this invention. 本発明の実施の形態による、充電時間計算部の動作のフローチャート。The flowchart of operation | movement of the charge time calculation part by embodiment of this invention.
　次に、本発明を実施するための形態について、図面を参照して詳細に説明する。
　図１は、本発明の実施の形態１による充電時間予測装置１０の構成を示すブロック図である。図に示すように、充電時間予測装置１０は、電池残量情報保持部１０１、電池容量情報保持部１０２、温度情報保持部１０３、充電器運用情報保持部１０４、充電モデル保持部１０５、および充電時間計算部１０６を備えている。 Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a charging time prediction apparatus 10 according to Embodiment 1 of the present invention. As shown in the figure, the charging time prediction apparatus 10 includes a battery remaining amount information holding unit 101, a battery capacity information holding unit 102, a temperature information holding unit 103, a charger operation information holding unit 104, a charging model holding unit 105, and a charging. A time calculation unit 106 is provided.
　充電時間予測装置１０は、ＣＰＵ、ＲＯＭやＲＡＭ等のメモリ、各種の情報を格納する外部記憶装置、入力インタフェース、出力インタフェース、通信インタフェース及びこれらを結ぶバスを備える専用又は汎用のコンピュータを適用することができる。なお、充電時間予測装置１０は、単一のコンピュータにより構成されるものであっても、通信回線を介して互いに接続された複数のコンピュータにより構成されるものであってもよい。また、電池残量情報保持部１０１、電池容量情報保持部１０２、温度情報保持部１０３、充電器運用情報保持部１０４、充電モデル保持部１０５、および充電時間計算部１０６は、車両内部や充電器に実装されていてもよいし、充電器や車両にネットワークを介して接続された遠隔の機器などに実装されていてもよい。 The charging time prediction device 10 applies a dedicated or general-purpose computer including a CPU, a memory such as a ROM and a RAM, an external storage device for storing various information, an input interface, an output interface, a communication interface, and a bus connecting them. Can do. The charging time prediction device 10 may be configured by a single computer or may be configured by a plurality of computers connected to each other via a communication line. In addition, the battery remaining amount information holding unit 101, the battery capacity information holding unit 102, the temperature information holding unit 103, the charger operation information holding unit 104, the charging model holding unit 105, and the charging time calculation unit 106 are provided inside the vehicle or the charger. It may be mounted on a remote device connected to a charger or a vehicle via a network.
　充電時間計算部１０６は、ＣＰＵがＲＯＭ等に格納された所定のプログラムを実行することにより実現される機能のモジュールに相当する。電池残量情報保持部１０１、電池容量情報保持部１０２、温度情報保持部１０３、充電器運用情報保持部１０４、および充電モデル保持部１０５は、ＲＯＭやＲＡＭ等のメモリ、外部記憶装置により実装される。 The charging time calculation unit 106 corresponds to a function module realized by the CPU executing a predetermined program stored in a ROM or the like. The remaining battery information holding unit 101, the battery capacity information holding unit 102, the temperature information holding unit 103, the charger operation information holding unit 104, and the charging model holding unit 105 are implemented by a memory such as a ROM or a RAM, or an external storage device. The
　電池残量情報保持部１０１は、車両の充電池に残されている電力量を表す情報を保持する。この情報は、充電時間計算部１０６に送られ、充電時間を算出するのに利用される。具体的には、充電池の最大蓄電量のうちのどれだけが充電されているかを表す充電率などの情報である。また、電池残量情報保持部１０１が保持する情報は、充電されている電力量そのものの値でもよい。この場合、電池容量情報保持部１０２から送信される充電容量の情報を用いれば、充電率を算出することができる。 The battery remaining amount information holding unit 101 holds information representing the amount of power remaining in the rechargeable battery of the vehicle. This information is sent to the charging time calculation unit 106 and used to calculate the charging time. Specifically, it is information such as a charging rate indicating how much of the maximum charged amount of the rechargeable battery is charged. Further, the information held by the battery remaining amount information holding unit 101 may be the value of the charged electric power itself. In this case, the charging rate can be calculated using the information on the charging capacity transmitted from the battery capacity information holding unit 102.
　電池容量情報保持部１０２は、車両の充電池に充電できる電力量を表す情報を保持する。この情報は、充電時間計算部１０６に送信され、充電時間を算出するのに利用される。具体的には、単位ｋＷｈで表される電力量の情報である。 The battery capacity information holding unit 102 holds information indicating the amount of power that can be charged in the rechargeable battery of the vehicle. This information is transmitted to the charging time calculation unit 106 and used for calculating the charging time. Specifically, it is information on the electric energy expressed in units of kWh.
　温度情報保持部１０３は、充電が行われる環境の温度情報を保持する。この情報は、充電時間計算部１０６に送信され、充電時間を算出するのに利用される。具体的には、充電を行う車両が計測した温度や、充電器が計測した温度を情報として利用する。また、充電池の内部の温度を充電池から取得して、温度情報として利用してもよい。ただし、環境温度を利用する場合と充電池内部の温度を利用する場合では、充電時間を推定するのに利用される充電モデルが異なる。温度情報保持部１０３が保持する温度の取得環境と充電モデル保持部１０５が保持するモデルが想定する温度の取得環境は一致させておく必要がある。なお、温度情報保持部１０３が保持する温度情報は、充電する環境の温度情報であれば測定方法は限定されない。例えば、充電器に備えつけられた温度計で取得したものでもよいし、車両に備えつけられた温度計で取得したものでもよい。また、充電器に近い位置の気象観測データから取得したものでもよい。 The temperature information holding unit 103 holds temperature information of an environment where charging is performed. This information is transmitted to the charging time calculation unit 106 and used for calculating the charging time. Specifically, the temperature measured by the vehicle that performs charging and the temperature measured by the charger are used as information. Further, the temperature inside the rechargeable battery may be acquired from the rechargeable battery and used as temperature information. However, the charging model used for estimating the charging time differs between the case of using the environmental temperature and the case of using the temperature inside the rechargeable battery. The temperature acquisition environment held by the temperature information holding unit 103 and the temperature acquisition environment assumed by the model held by the charging model holding unit 105 need to match. Note that the measurement method is not limited as long as the temperature information held by the temperature information holding unit 103 is temperature information of the environment to be charged. For example, what was acquired with the thermometer with which the charger was equipped may be acquired with the thermometer with which the vehicle was equipped. Moreover, what was acquired from the weather observation data of the position near a charger may be used.
　充電器運用情報保持部１０４は、充電器の動作設定や出力電力スケジュールなど、充電器の運用ポリシーの情報を保持する。この情報は充電時間計算部１０６に送信され、充電時間計算部１０６は、充電モデル保持部１０５から供給される充電モデルを取得した運用ポリシーに当てはめて充電時間を算出する。 The charger operation information holding unit 104 holds charger operation policy information such as charger operation settings and output power schedules. This information is transmitted to the charging time calculation unit 106, and the charging time calculation unit 106 applies the charging model supplied from the charging model holding unit 105 to the operation policy obtained to calculate the charging time.
　充電器運用情報保持部１０４が保持する運用ポリシーの一例として、充電上限充電率について説明する。充電上限充電率は、充電が完了したと判断する基準の充電率である。充電器は、充電池の充電率が充電上限充電率に達した時点で充電を終了する。充電上限充電率は、例えば充電器を運用する運用者が決める値であり、充電器ごとに違う値が設定されることもある。したがって、たとえば同じ充電残量の状態で充電を始めても、充電上限充電率が大きい方が充電にかかる時間は長くなる。 As an example of the operation policy held by the charger operation information holding unit 104, a charging upper limit charging rate will be described. The charging upper limit charging rate is a reference charging rate at which it is determined that charging is completed. The charger ends charging when the charging rate of the rechargeable battery reaches the charging upper limit charging rate. The charging upper limit charging rate is a value determined by an operator who operates the charger, for example, and a different value may be set for each charger. Therefore, for example, even if charging is started with the same remaining charge, the time required for charging becomes longer when the charging upper limit charging rate is larger.
　また、運用ポリシーの他の例として、充電上限電力量があげられる。充電上限電力量は、充電が完了したと判断する基準の電力量である。充電器は、充電池に充電した電力量が充電上限電力量に達した時点で充電を終了する。なお、充電池の容量に関わらず、一回の充電で充電できる電力量を制限したい場合には、充電上限電力量を設定する。また、電気料金が使用電力量に比例して決定される場合は、電力量から電気料金を計算することができるので、運用ポリシーとして充電上限電気料金を指定することもできる。 Also, as another example of the operation policy, there is a charge upper limit electric energy. The charging upper limit electric energy is a reference electric energy for determining that charging is completed. The charger ends charging when the amount of power charged in the rechargeable battery reaches the upper limit of charge power. In addition, regardless of the capacity of the rechargeable battery, when it is desired to limit the amount of power that can be charged by a single charge, a charge upper limit power amount is set. In addition, when the electricity rate is determined in proportion to the amount of power used, the electricity rate can be calculated from the amount of electricity, so that the charging upper limit electricity rate can be specified as the operation policy.
　さらに、運用ポリシーの他の例として、充電器の出力電力スケジュールがあげられる。図２は、充電器の出力電力スケジュールの一例であり、時間帯毎の充電器が出力可能な最大出力電力を示している。図２の例では、１３：００～１７：００は最大出力電力が２５ｋＷｈに制限され、それ以外の時間帯では５０ｋＷｈまで出力することができる。したがって、１３：００～１７：００の時間帯に充電すると、他の時間帯に同じ電力量を充電する場合に比べて充電に時間がかかることになる。このような出力電力スケジュールは、電力需要の多い昼間に出力電力を制限したい場合などに設定されるポリシーである。 Furthermore, another example of the operation policy is a charger output power schedule. FIG. 2 is an example of the output power schedule of the charger, and shows the maximum output power that can be output by the charger for each time zone. In the example of FIG. 2, the maximum output power is limited to 25 kWh from 13:00 to 17:00, and it can output up to 50 kWh in other time zones. Therefore, charging in the time zone from 13:00 to 17:00 takes longer to charge than in the case of charging the same amount of power in other time zones. Such an output power schedule is a policy set when it is desired to limit the output power during the daytime when there is a great demand for power.
　さらに、運用ポリシーの他の例として、電気料金テーブルがあげられる。図３は、電気料金テーブルの例であり、時間帯毎の電気料金を示している。図３の例では、１３：００～１７：００は１ｋＷｈあたり３０円の電気料金がかかり、それ以外の時間帯では１ｋＷｈあたり１５円の電気料金がかかる。したがって、１３：００～１７：００の時間帯に充電すると、他の時間帯に同じ電力量を充電する場合に比べて電気料金が多くかかることになる。このような電気料金テーブルは、電力需要の多い昼間に電気の使用量を抑制したい場合などに設定されるポリシーである。 Furthermore, another example of the operation policy is an electricity rate table. FIG. 3 is an example of the electricity rate table, and shows the electricity rate for each time zone. In the example of FIG. 3, an electric charge of 30 yen per kWh is charged from 13:00 to 17:00, and an electric charge of 15 yen is charged per kWh in other time zones. Therefore, if charging is performed during the time period from 13:00 to 17:00, the electricity charge is higher than when charging the same amount of power during other time periods. Such an electricity rate table is a policy that is set when, for example, it is desired to suppress the amount of electricity used in the daytime when there is a great demand for electricity.
　充電モデル保持部１０５は、電池パラメータと、充電器動作パラメータと、充電時間の関係を表した充電モデルを保持する。図４は、充電モデルの一例を説明する図である。図４の例は、充電を開始する時点での充電池の充電率（開始充電率）と、充電上限充電率に達するまでの充電時間の関係を表している。図４の例では、充電上限充電率は１００％であり、充電率５０％から充電を開始した場合には、充電率１００％になるまでに約２６００秒かかることを示している。このモデルにおける充電時間は、電池の容量、充電時の温度情報、充電器の最大出力電力などのパラメータによって変化する。電池の容量が大きいほど充電時間は長くなる。また一般に、温度が低いほど充電時間は長くなる。 The charging model holding unit 105 holds a charging model that represents the relationship between battery parameters, charger operating parameters, and charging time. FIG. 4 is a diagram illustrating an example of a charging model. The example of FIG. 4 represents the relationship between the charging rate (starting charging rate) of the rechargeable battery at the time of starting charging and the charging time until the charging upper limit charging rate is reached. In the example of FIG. 4, the charging upper limit charging rate is 100%, and when charging is started from the charging rate of 50%, it takes about 2600 seconds to reach the charging rate of 100%. The charging time in this model varies depending on parameters such as battery capacity, temperature information during charging, and maximum output power of the charger. The larger the battery capacity, the longer the charging time. In general, the lower the temperature, the longer the charging time.
　充電モデルは、例えば線形回帰やニューラルネットワークなどの手法を利用して推定することができる。すなわち、電池容量、温度、および最大出力電力のパラメータを様々な値に設定して、実際に充電を行った時の充電時間と充電率の変化を記録し、それらの結果を用いて線形回帰やニューラルネットワークによる学習を実行し、学習係数を推計することで充電モデルを得ることができる。 The charging model can be estimated using a technique such as linear regression or neural network. In other words, the battery capacity, temperature, and maximum output power parameters are set to various values, and changes in charging time and charging rate when charging is actually performed are recorded. A charging model can be obtained by executing learning using a neural network and estimating a learning coefficient.
　充電時間計算部１０６は、電池残量情報保持部１０１から取得した電池残量情報と、電池容量情報保持部１０２から取得した電池容量情報と、温度情報保持部１０３から取得した温度情報と、充電器運用情報保持部１０４から取得した充電器の運用ポリシーをパラメータとして、充電モデル保持部１０５から取得した充電モデルをパラメータに応じて調整し、調整した充電モデルを用いて充電にかかる時間を算出する。 The charging time calculation unit 106 includes the remaining battery level information acquired from the remaining battery level information holding unit 101, the battery capacity information acquired from the battery capacity information holding unit 102, the temperature information acquired from the temperature information holding unit 103, the charging Using the charger operation policy acquired from the charger operation information holding unit 104 as a parameter, the charging model acquired from the charging model holding unit 105 is adjusted according to the parameter, and the time required for charging is calculated using the adjusted charging model. .
　充電時間計算部１０６の動作について、具体例を用いて説明する。
　まず、運用ポリシーとして充電上限充電率のみが設定されている場合を例に、充電モデルの調整方法について説明する。充電時間計算部１０６は、取得した電池容量と温度の情報に合わせた充電モデルを充電モデル保持部１０５から取得する。ここで、図４に示すような充電モデルを表す関数をｔ（ｓ）と表す。ｓは充電開始充電率、ｔは充電率が１００％になるまでの充電時間である。すなわち、充電率５０％から充電を始めて１００％に達するまでの時間はｔ（０．５）と表すことができる。また、定義からｔ（１．０）＝０である。充電上限充電率がｓｕの場合の充電モデルを表す関数ｔｓｕ（ｓ）は、
ｔｓｕ（ｓ）＝ｔ（ｓ）－ｔ（ｓｕ）　…（１）
である。 The operation of the charging time calculation unit 106 will be described using a specific example.
First, a charging model adjustment method will be described by taking as an example a case where only the charging upper limit charging rate is set as the operation policy. The charging time calculation unit 106 acquires a charging model that matches the acquired battery capacity and temperature information from the charging model holding unit 105. Here, a function representing a charging model as shown in FIG. 4 is represented by t (s). s is a charging start charging rate, and t is a charging time until the charging rate reaches 100%. That is, the time from the start of charging to reaching 100% when the charging rate is 50% can be expressed as t (0.5). Also, t (1.0) = 0 from the definition. Function t su charging upper limit charge ratio indicative of a charged model in the case of s u (s) is
t su (s) = t (s) −t (s u ) (1)
It is.
　充電時間計算部１０６は、上記の式（１）を用いることにより、任意の充電上限充電率に応じて調整した充電モデルを得ることができる。図５に充電上限充電率を８０％とした場合の充電モデルの例を示す。 The charging time calculation unit 106 can obtain a charging model adjusted according to an arbitrary charging upper limit charging rate by using the above equation (1). FIG. 5 shows an example of a charging model when the upper limit charging rate is 80%.
　また、運用ポリシーとして充電上限電力量のみが設定されている場合も同様に充電モデルを調整することができる。充電開始時の残存電力量をｅ、充電上限電力量をｅｕ、充電池の電池容量をＣとすると、式（１）においてｓ→ｅ／Ｃ、ｓｕ→ｍｉｎ（（ｅ＋ｅｕ）／Ｃ，１．０）と置き換えればよいので、充電モデルを表す関数ｔｅｕ（ｅ）は、
ｔｅｕ（ｅ）＝ｔ（ｅ／Ｃ）－ｔ（ｍｉｎ（（ｅ＋ｅｕ）／Ｃ，１．０））　…（２）
となる。図６に、電池容量が２４．０ｋＷｈ、充電上限電力が５ｋＷｈの場合の、充電開始時の電力残量と充電時間の関係を表す充電モデルの例を示す。 Further, the charging model can be adjusted in the same manner when only the charging upper limit electric energy is set as the operation policy. Assuming that the remaining energy at the start of charging is e, the charging upper limit energy is e u , and the battery capacity of the rechargeable battery is C, s → e / C, su → min ((e + e u ) / C in equation (1) , 1.0), the function t eu (e) representing the charging model is
t eu (e) = t (e / C) −t (min ((e + e u ) / C, 1.0)) (2)
It becomes. FIG. 6 shows an example of a charging model that represents the relationship between the remaining power at the start of charging and the charging time when the battery capacity is 24.0 kWh and the charging upper limit power is 5 kWh.
　次に、運用ポリシーとして出力電力スケジュールが設定されている場合の充電時間計算部１０６の動作について説明する。基本的に、充電器の出力電力が１／ｎになると、充電時間はｎ倍になると考えることができる。したがって、充電の途中で最大出力電力が変わらないとすれば、出力電力が１／ｎになった場合の充電時間は、元の充電モデルから計算される充電時間をｎ倍することにより得られる。 Next, the operation of the charging time calculation unit 106 when the output power schedule is set as the operation policy will be described. Basically, when the output power of the charger becomes 1 / n, it can be considered that the charging time becomes n times. Therefore, if the maximum output power does not change during charging, the charging time when the output power becomes 1 / n can be obtained by multiplying the charging time calculated from the original charging model by n.
　例えば、図２に示すような出力電力スケジュールが設定されている場合、充電開始時刻が１４：００であれば、最大出力が５０ｋＷの半分の２５ｋＷなので、充電時間は５０ｋＷの時の２倍になる。 For example, when the output power schedule as shown in FIG. 2 is set, if the charging start time is 14:00, the maximum output is 25 kW, which is half of 50 kW, so the charging time is twice that of 50 kW. .
　また、充電の途中で最大出力電力が変わる場合は、２つのモデルを合わせて充電時間を計算する。例えば、充電上限充電率がｓｕ、充電開始時点のＴ秒後から最大出力電力が半分になる場合に、ｔｓｕ（ｓ）がＴとなる開始充電率をｓ＊＝ｔ－１ ｓｕ（Ｔ）とすると、充電開始充電率がｓ＊より高い場合は、最大出力電力が半分になる前に充電率がｓｕに達して充電が終了する。この時の充電時間はｔｓｕ（ｓ）である。また、充電開始時の充電率がｓ＊以下の場合は、充電の途中で最大出力電力が半分になる。この場合の充電時間は　Ｔ＋２ｔｓ ＊（ｓ）となる。 If the maximum output power changes during charging, the charging time is calculated by combining the two models. For example, charging upper limit charge rate s u, if the maximum output power is halved after T seconds of the charging start time, the start charging rate t su (s) is T s * = t -1 su ( T ), When the charging start charging rate is higher than s * , the charging rate reaches su before the maximum output power is halved, and the charging ends. The charging time at this time is t su (s). Further, when the charging rate at the start of charging is s * or less, the maximum output power is halved during charging. Charging time in this case is T + 2t s * (s) .
　図７に、ｓｕ＝０．８、Ｔ＝６００の場合の充電モデルの例を示す。図７の例では、充電開始充電率がｓ＝ｔ－１ ０．８（６００）≒０．５６より高い場合は、充電中に最大出力電力は変化せず、それより低い場合は、充電開始から６００秒後に最大出力が半分になるため充電時間が長くなる。図中の点線は、最大出力が充電中に変化しない場合の充電時間を表しており、図に示すように、開始６００秒後から最大出力電力が半分になる場合と比べて充電時間が短くなっている。 FIG. 7 shows an example of a charging model when s u = 0.8 and T = 600. In the example of FIG. 7, when the charging start charging rate is higher than s = t −1 0.8 (600) ≈0.56, the maximum output power does not change during charging, and when it is lower than that, charging starts. After 600 seconds, the maximum output is halved and the charging time becomes longer. The dotted line in the figure represents the charging time when the maximum output does not change during charging, and as shown in the figure, the charging time is shorter than when the maximum output power is halved after 600 seconds from the start. ing.
　次に、運用ポリシーとして料金テーブルが設定されている場合の動作について説明する。料金テーブルが設定され、料金を指定して充電する場合は，充電上限電力量が設定されている場合と同様に充電時間を計算できる。例えば、図３のように料金テーブルが設定されているとすると、１４：００に充電を開始する場合は、１ｋＷｈあたり３０円の料金がかかる。すなわち、３００円の充電料金を指定すると、３００／３０＝１０ｋＷｈだけ充電できる。したがって、上述した充電上限電力量が設定されている場合と同様の方法で充電時間を計算できる。また、充電の途中で料金が変わる場合は、２つのモデルを合わせて充電時間を計算することができる。例えば、３００円分の充電を行いたい場合に、充電開始後５００秒後に料金が１５円／ｋＷｈ→３０円／ｋＷｈに変わるとすると、最初の５００　秒で（５０／３６００）×５００≒６．９ｋＷｈ分、つまり６．９×１５≒１０４円分だけ充電できる。残りは１９６円であるため、１９６／３０≒６．５ｋＷｈ充電できる。したがって、合計１３．４ｋＷｈ充電できる。このように、充電の途中で料金が変わる場合も、充電上限電力量が設定されている場合と同じように充電時間を計算できる。 Next, the operation when a charge table is set as an operation policy will be described. When a charge table is set and charging is performed by specifying a charge, the charging time can be calculated in the same manner as when the charge upper limit electric energy is set. For example, assuming that a charge table is set as shown in FIG. 3, when charging starts at 14:00, a charge of 30 yen is charged per kWh. That is, if a charge of 300 yen is specified, only 300/30 = 10 kWh can be charged. Therefore, the charging time can be calculated by the same method as when the above-described charging upper limit electric energy is set. If the charge changes during charging, the charging time can be calculated by combining the two models. For example, if it is desired to charge 300 yen, if the charge changes from 15 yen / kWh to 30 yen / kWh 500 seconds after the start of charging, (50/3600) × 500≈6. The battery can be charged for 9 kWh, that is, 6.9 × 15≈104 yen. Since the rest is 196 yen, 196 / 30≈6.5 kWh can be charged. Therefore, a total of 13.4 kWh can be charged. Thus, even when the charge changes during charging, the charging time can be calculated in the same manner as when the charging upper limit electric energy is set.
　図８は、充電時間計算部１０６の動作のフローチャートである。
　まず、充電時間計算部１０６は、電池残量情報保持部１０１から電池残量情報を読み込む（ステップＳ１０１）。次に、充電時間計算部１０６は、電池容量情報保持部１０２から電池容量情報を読み込み（ステップＳ１０２）、さらに温度情報保持部１０３から温度情報を読み込む（ステップＳ１０３）。次に、充電時間計算部１０６は、充電器運用情報保持部１０４から充電器の運用ポリシーを読み込み（ステップＳ１０４）、充電モデル保持部１０５から充電モデルを取得する（ステップＳ１０５）。その後。充電時間計算部１０６は、取得した運用ポリシーに合わせて充電モデルを調整する（ステップＳ１０６）。さらに、充電時間計算部１０６は、調整した充電モデルと取得した情報を用いて充電時間を計算する（ステップＳ１０７）。 FIG. 8 is a flowchart of the operation of the charging time calculation unit 106.
First, the charging time calculation unit 106 reads battery remaining amount information from the battery remaining amount information holding unit 101 (step S101). Next, the charging time calculation unit 106 reads battery capacity information from the battery capacity information holding unit 102 (step S102), and further reads temperature information from the temperature information holding unit 103 (step S103). Next, the charging time calculation unit 106 reads the charger operating policy from the charger operation information holding unit 104 (step S104), and acquires the charging model from the charging model holding unit 105 (step S105). afterwards. The charging time calculation unit 106 adjusts the charging model according to the acquired operation policy (step S106). Furthermore, the charging time calculation unit 106 calculates the charging time using the adjusted charging model and the acquired information (step S107).
　以上のように、本実施形態によれば、充電時間の予測に際し、充電残量、電池容量、及び充電温度の情報をパラメータとして、充電モデルを用いて充電時間を予測する。この時、充電上限充電率、充電上限電力量、充電器の出力電力スケジュール、および料金テーブルなどの充電器運用ポリシーを考慮して充電モデルを調整してから、充電時間予測を行うようにした。このように、車両から得られる情報だけでなく、充電器運用ポリシーのように車両や充電池自体の状態とは関係のない情報も考慮して充電時間を予測するようにしたので、充電時間の予測精度を向上させることができる。 As described above, according to the present embodiment, when the charging time is predicted, the charging time is predicted using the charging model using the information on the remaining charge amount, the battery capacity, and the charging temperature as parameters. At this time, the charging time is predicted after adjusting the charging model in consideration of the charging operation policy such as the charging upper limit charging rate, the charging upper limit power amount, the charger output power schedule, and the charge table. In this way, not only the information obtained from the vehicle, but also information that is not related to the state of the vehicle or the rechargeable battery itself, such as the charger operation policy, is used to predict the charging time. Prediction accuracy can be improved.
　この出願は、２０１２年２月１日に出願された日本出願特願２０１２－１９８５８を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2012-19858 filed on February 1, 2012, the entire disclosure of which is incorporated herein.
　以上、実施形態を参照して本願発明を説明したが、本願発明は上記実施形態に限定されるものではない。本願発明の構成や詳細には、本願発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.
　上記の実施の形態の一部または全部は、以下の付記のようにも記載されうるが、以下には限られない。
（付記１）車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、
　前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、
　充電が行われる環境の温度情報を保持する温度情報保持部と、
　充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、
　前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、
　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、を備え、
　前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、充電時間予測装置。 A part or all of the above embodiment can be described as in the following supplementary notes, but is not limited thereto.
(Supplementary note 1) A battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
A battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
A temperature information holding unit that holds temperature information of an environment in which charging is performed;
A charger operation information holding unit for holding charger operation policy information;
A charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time;
A charge time calculation unit that predicts a charge time using the charge model using at least one of the remaining charge, the battery capacity, and the temperature information as a parameter, and
The charging time calculation unit is configured to predict the charging time after adjusting the charging model in consideration of the operation policy.
（付記２）前記充電モデルは、充電開始時の充電池の充電率、充電が行われる環境の温度、および充電器の出力電力と、充電時間の関係を表すことを特徴とする付記１に記載の充電時間予測装置。 (Additional remark 2) The said charge model represents the relationship between the charging rate of the rechargeable battery at the time of charge start, the temperature of the environment where charging is performed, the output power of the charger, and the charging time. Charging time prediction device.
（付記３）前記運用ポリシーは、充電における上限充電率を定めるものである付記１または２に記載の充電時間予測装置。 (Additional remark 3) The said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the upper limit charging rate in charge.
（付記４）前記運用ポリシーは、充電における上限電力量を定めるものである付記１または２に記載の充電時間予測装置。 (Additional remark 4) The said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the upper limit electric energy in charge.
（付記５）前記運用ポリシーは、充電器の出力電力スケジュールを定めるものである付記１または２に記載の充電時間予測装置。 (Additional remark 5) The said operation policy is a charging time prediction apparatus of Additional remark 1 or 2 which defines the output electric power schedule of a charger.
（付記６）前記運用ポリシーは、電気料金テーブルを定めるものである付記１または２に記載の充電時間予測装置。 (Additional remark 6) The said operation policy is a charge time prediction apparatus of Additional remark 1 or 2 which defines an electricity bill table.
（付記７）前記温度情報は、前記充電器に備えつけられた温度計によって測定される温度情報であることを特徴とする付記１から６のいずれかに記載の充電時間予測装置。 (Additional remark 7) The said temperature information is temperature information measured by the thermometer with which the said charger was equipped, The charging time prediction apparatus in any one of Additional remark 1 to 6 characterized by the above-mentioned.
（付記８）前記温度情報は、前記充電池の内部に備えつけられた温度計によって測定される温度情報であることを特徴とする付記１から６のいずれかに記載の充電時間予測装置。 (Supplementary note 8) The charging time prediction apparatus according to any one of supplementary notes 1 to 6, wherein the temperature information is temperature information measured by a thermometer provided inside the rechargeable battery.
（付記９）前記温度情報は、前記充電器の近くで観測された気象データから得られる温度情報であることを特徴とする付記１から６のいずれかに記載の充電時間予測装置。 (Additional remark 9) The said temperature information is temperature information obtained from the weather data observed near the said charger, The charging time prediction apparatus in any one of Additional remark 1 to 6 characterized by the above-mentioned.
（付記１０）電池残量情報保持部から、車両の充電池に残されている電力量を表す充電残量の情報を取得する工程と、
　電池容量情報保持部から、前記車両の充電池に充電できる電力量を表す電池容量の情報を取得する工程と、
　温度情報保持部から、充電が行われる環境の温度情報を取得する工程と、
　充電器運用情報保持部から、充電器の運用ポリシーの情報を取得する工程と、
　充電モデル保持部から、前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを取得する工程と、
　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する工程と、を備え、
　前記充電時間を予測する工程では、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、充電時間予測方法。 (Additional remark 10) The process of acquiring the information of the charge remaining amount showing the electric energy remaining in the rechargeable battery of a vehicle from a battery remaining charge information holding part,
Obtaining battery capacity information representing the amount of power that can be charged to the rechargeable battery of the vehicle from the battery capacity information holding unit;
Acquiring temperature information of the environment where charging is performed from the temperature information holding unit;
A step of obtaining charger operation policy information from the charger operation information holding unit;
From the charging model holding unit, obtaining a charging model representing a relationship between a charging time and a parameter related to the rechargeable battery of the vehicle or the charger; and
Using at least one of the remaining charge, the battery capacity, and the temperature information as parameters, predicting a charging time using the charging model,
The charging time prediction method, wherein in the step of predicting the charging time, the charging time is predicted after adjusting the charging model in consideration of the operation policy.
（付記１１）コンピュータを、
　車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、
　前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、
　充電が行われる環境の温度情報を保持する温度情報保持部と、
　充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、
　前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、
　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、して機能させ、
　前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、プログラム。 (Appendix 11)
A battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
A battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
A temperature information holding unit that holds temperature information of an environment in which charging is performed;
A charger operation information holding unit for holding charger operation policy information;
A charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time;
Using at least one of the remaining charge amount, the battery capacity, and the temperature information as parameters, and functioning as a charge time calculation unit that predicts a charge time using the charge model,
The charging time calculation unit adjusts the charging model in consideration of the operation policy, and then predicts the charging time.
　本発明は、電気自動車から得られる情報以外の情報や条件も考慮して、充電にかかる時間を予測することに適している。 The present invention is suitable for predicting the time required for charging in consideration of information and conditions other than information obtained from an electric vehicle.
　１０　充電時間予測装置、１０１　電池残量情報保持部、１０２　電池容量情報保持部、１０３　温度情報保持部、１０４　充電器運用情報保持部、１０５　充電モデル保持部、１０６　充電時間計算部 10 Charging time prediction device, 101 Battery remaining information holding unit, 102 Battery capacity information holding unit, 103 Temperature information holding unit, 104 Charger operation information holding unit, 105 Charging model holding unit, 106 Charging time calculation unit

Claims (10)

  1. 　車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、
    　前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、
    　充電が行われる環境の温度情報を保持する温度情報保持部と、
    　充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、
    　前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、
    　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、を備え、
    　前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、充電時間予測装置。     A battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
    A battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
    A temperature information holding unit that holds temperature information of an environment in which charging is performed;
    A charger operation information holding unit for holding charger operation policy information;
    A charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time;
    A charge time calculation unit that predicts a charge time using the charge model using at least one of the remaining charge, the battery capacity, and the temperature information as a parameter, and
    The charging time calculation unit is configured to predict the charging time after adjusting the charging model in consideration of the operation policy.
  2. 　前記充電モデルは、充電開始時の充電池の充電率、充電が行われる環境の温度、および充電器の出力電力と、充電時間の関係を表すことを特徴とする請求項１に記載の充電時間予測装置。 The charging time according to claim 1, wherein the charging model represents a relationship between a charging rate of a rechargeable battery at the start of charging, a temperature of an environment in which charging is performed, an output power of a charger, and a charging time. Prediction device.
  3. 　前記運用ポリシーは、充電における上限充電率を定めるものである請求項１または２に記載の充電時間予測装置。 The charging time prediction apparatus according to claim 1 or 2, wherein the operation policy defines an upper limit charging rate in charging.
  4. 　前記運用ポリシーは、充電における上限電力量を定めるものである請求項１または２に記載の充電時間予測装置。 The charging time prediction device according to claim 1 or 2, wherein the operation policy defines an upper limit electric energy for charging.
  5. 　前記運用ポリシーは、充電器の出力電力スケジュールを定めるものである請求項１または２に記載の充電時間予測装置。 The charging time prediction apparatus according to claim 1 or 2, wherein the operation policy defines an output power schedule of a charger.
  6. 　前記運用ポリシーは、電気料金テーブルを定めるものである請求項１または２に記載の充電時間予測装置。 The charging time prediction device according to claim 1 or 2, wherein the operation policy defines an electricity rate table.
  7. 　前記温度情報は、前記充電器に備えつけられた温度計によって測定される温度情報であることを特徴とする請求項１から６のいずれかに記載の充電時間予測装置。 The charging time prediction apparatus according to any one of claims 1 to 6, wherein the temperature information is temperature information measured by a thermometer provided in the charger.
  8. 　前記温度情報は、前記充電池の内部に備えつけられた温度計によって測定される温度情報であることを特徴とする請求項１から６のいずれかに記載の充電時間予測装置。 The charging time prediction apparatus according to any one of claims 1 to 6, wherein the temperature information is temperature information measured by a thermometer provided inside the rechargeable battery.
  9. 　電池残量情報保持部から、車両の充電池に残されている電力量を表す充電残量の情報を取得する工程と、
    　電池容量情報保持部から、前記車両の充電池に充電できる電力量を表す電池容量の情報を取得する工程と、
    　温度情報保持部から、充電が行われる環境の温度情報を取得する工程と、
    　充電器運用情報保持部から、充電器の運用ポリシーの情報を取得する工程と、
    　充電モデル保持部から、前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを取得する工程と、
    　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する工程と、を備え、
    　前記充電時間を予測する工程では、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、充電時間予測方法。     A step of acquiring information on a remaining charge amount representing an amount of electric power remaining in the rechargeable battery of the vehicle from the battery remaining amount information holding unit;
    Obtaining battery capacity information representing the amount of power that can be charged to the rechargeable battery of the vehicle from the battery capacity information holding unit;
    Acquiring temperature information of the environment where charging is performed from the temperature information holding unit;
    A step of obtaining charger operation policy information from the charger operation information holding unit;
    From the charging model holding unit, obtaining a charging model representing a relationship between a charging time and a parameter related to the rechargeable battery of the vehicle or the charger; and
    Using at least one of the remaining charge, the battery capacity, and the temperature information as parameters, predicting a charging time using the charging model,
    The charging time prediction method, wherein in the step of predicting the charging time, the charging time is predicted after adjusting the charging model in consideration of the operation policy.
  10. 　コンピュータを、
    　車両の充電池に残されている電力量を表す充電残量の情報保持する電池残量情報保持部と、
    　前記車両の充電池に充電できる電力量を表す電池容量の情報を保持する電池容量情報保持部と、
    　充電が行われる環境の温度情報を保持する温度情報保持部と、
    　充電器の運用ポリシーの情報を保持する充電器運用情報保持部と、
    　前記車両の充電池または前記充電器に関するパラメータと充電時間の関係を表した充電モデルを保持する充電モデル保持部と、
    　前記充電残量、前記電池容量、及び前記温度情報のうちの少なくとも１つをパラメータとして、前記充電モデルを用いて充電時間を予測する充電時間計算部と、して機能させ、
    　前記充電時間計算部は、前記運用ポリシーを考慮して前記充電モデルを調整してから、前記充電時間の予測を行う、プログラム。     Computer
    A battery remaining amount information holding unit for holding information on the remaining amount of charge representing the amount of power remaining in the rechargeable battery of the vehicle;
    A battery capacity information holding unit for holding battery capacity information indicating the amount of power that can be charged in the rechargeable battery of the vehicle;
    A temperature information holding unit that holds temperature information of an environment in which charging is performed;
    A charger operation information holding unit for holding charger operation policy information;
    A charging model holding unit for holding a charging model representing a relationship between a parameter relating to the rechargeable battery of the vehicle or the charger and a charging time;
    Using at least one of the remaining charge amount, the battery capacity, and the temperature information as parameters, and functioning as a charge time calculation unit that predicts a charge time using the charge model,
    The charging time calculation unit adjusts the charging model in consideration of the operation policy, and then predicts the charging time.
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