JP2010268640A - Power supply system and method of controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply system that suppresses the extended charging of an on-vehicle battery, beyond the desired time and date of completion of charging and also suppresses an increase in charging cost, and to provide a method for controlling the system. <P>SOLUTION: A desired time and date of completion of charging Dt* is received from a user (S140). When a calculated amount of power required for charging Echg* can be covered by a calculated maximum amount of power by photovoltaic power generation Esmax, power is supplied to a charger according to a charging schedule Sch, wherein a battery is charged only by the power from a photovoltaic power generation apparatus (S260 and S270). When the power required for charging Echg* cannot be covered by the maximum amount of power by photovoltaic power generation Esmax, power is supplied to the charger in accordance with a charging schedule Sch, consisting of a photovoltaic power generation schedule Schs and a commercial power charging schedule Schc, wherein a shortfall in power for charging the battery is compensated by the power from a commercial power supply (S280 to S310). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power supply system and a control method thereof, and more particularly, to a power supply system that supplies power from a solar power generation device and power from a commercial power source to a vehicle-mounted charger and a control method thereof.

  Conventionally, as this type of power supply system, a system that supplies electric power from a residential electric facility to a vehicle storage battery via a device such as an inverter connected to the vehicle storage battery of an electric vehicle has been proposed (for example, Patent Document 1). In this system, the power obtained by the photovoltaic power generator installed in the house is compared with the midnight power of the external system transmitted from the power company and the general power of this external system. By preferentially supplying it to a vehicle storage battery or the like, the cost can be reduced.

JP-A-11-178237

  However, in the above-described power supply system, charging of the vehicle storage battery may not be completed by the date and time desired by the user. Since the generated power of the solar power generation device is less expensive than the power supplied from the power company if the initial cost of the device is excluded, the vehicle uses the power from the low cost solar power generation device preferentially. When the storage battery is charged, the vehicle storage battery is not charged during the daytime or nighttime, such as rainy or cloudy weather with little solar radiation, and the vehicle storage battery may not be fully charged by the date and time desired by the user. Arise. Accordingly, it is desirable to complete the charging by the time when the charging desired by the user is completed, and it is also desirable to suppress the cost required for charging the vehicle storage battery.

  The main purpose of the power supply system and the control method thereof according to the present invention is to suppress the charging of the vehicle-mounted battery beyond the desired charging completion date and to reduce the charging cost.

  The power supply system and the control method thereof according to the present invention employ the following means in order to achieve the main object described above.

The power supply system of the present invention includes:
An on-board charger for charging an in-vehicle battery and a connecting means for connecting to the on-board battery management device for managing the on-board battery, and a solar power generation device that generates power using sunlight and a commercial power source A power supply system connected to supply power from the photovoltaic power generator and power from the commercial power source to the charger;
Connection switching means for switching between the connection between the solar power generation device and the charger and the connection between the commercial power source and the charger;
Relationship storage means for storing a power generation amount seasonal time relationship as a relationship between the power generation amount by the solar power generation device and the season and time;
A charging completion desired date / time receiving means for receiving an input of a charging completion desired date / time of the vehicle battery;
Information acquisition means for acquiring battery information including the storage amount of the in-vehicle battery and the storage amount at the completion of charging from the battery management device;
Based on the acquired amount of stored electricity and the amount of stored electricity at the completion of charging, a required amount of charge required for charging the in-vehicle battery is calculated, and the received charge completion desired date and time based on the power generation amount seasonal time relationship A power amount calculating means for calculating the amount of solar power generated as the amount of power generated by the solar power generation device;
When the required amount of electric power for charging can be covered by the amount of electric power generated by photovoltaic power, a charging schedule for charging the in-vehicle battery with only electric power from the photovoltaic power generation device is set, and the amount of required electric energy for charging is set to the amount of sunlight. When the amount of generated power cannot be covered, the solar charging schedule for charging the in-vehicle battery with the power from the photovoltaic power generation device and the amount of power required for charging cannot be covered by the amount of generated solar power Charging schedule setting means for setting a charging schedule consisting of a commercial power supply charging schedule for charging the vehicle-mounted battery with respect to the amount of power for minutes by the power from the commercial power supply;
Switching control means for controlling the connection switching means so that electric power for charging the in-vehicle battery is supplied to the charger based on the set charging schedule;
It is a summary to provide.

  In this power supply system of the present invention, the battery information including the storage amount of the in-vehicle battery and the storage amount at the completion of charging is acquired from the battery management device while receiving the input of the charging completion desired date and time of the in-vehicle battery. Calculates the amount of power required for charging the vehicle-mounted battery based on the amount of stored electricity and the amount of stored electricity when charging is completed, and by the photovoltaic power generation device by the desired charging completion date and time received based on the relationship between the power generation amount and the seasonal time The amount of photovoltaic power generation as the amount of power generated is calculated. When the amount of power required for charging can be covered by the amount of photovoltaic power generation, a charging schedule for charging the on-vehicle battery with only the power from the photovoltaic power generation device is set, and the amount of power required for charging is determined by the amount of photovoltaic power generation. When it is not possible to cover the solar charging schedule for charging the in-vehicle battery with the electric power from the solar power generation device and the in-vehicle battery for the insufficient amount of electric power that cannot be covered by the amount of solar power generation A connection switching means for setting a charging schedule comprising a commercial power supply charging schedule for charging the electric power from the commercial power supply, and for supplying electric power for charging the vehicle-mounted battery to the charger based on the set charging schedule To control. As a result, it is possible to suppress charging of the in-vehicle battery beyond the desired charging completion date and time, and to suppress charging cost.

  In such a power supply system of the present invention, the relation storage means is means for storing a power charge time relation as a relation between a charge per unit power amount of the commercial power source and a time, and the charge schedule setting means includes: When the amount of power required for charging cannot be covered by the amount of photovoltaic power generation, the time of the power charge relative to the amount of insufficient power that cannot be covered by the amount of photovoltaic power generation Based on the relationship, the charging schedule may be set by using the commercial power supply charging schedule that minimizes the charging of the vehicle-mounted battery. In this way, the cost of charging can be further suppressed.

  In the power supply system according to the present invention, the power generation amount seasonal time relationship is based on weather prediction information for correcting the basic value to the relationship between the basic value of the power generation amount by the solar power generation device and the season and time. It can also be a relationship obtained by applying a correction coefficient. By doing so, the power generation seasonal time relationship can be made more appropriate. As a result, charging costs can be more appropriately suppressed.

  Furthermore, in the power supply system of the present invention, the power amount calculation means is a means for calculating a commercial supply power amount as a power amount that can be supplied from the commercial power source to the charger by the accepted charging completion date and time. And the charging schedule setting means determines whether or not the required power amount for charging can be covered by the solar power generation amount when the required power amount for charging cannot be covered by the commercial power amount. First, it may be a means for setting a charging schedule for charging the vehicle-mounted battery only with electric power from the commercial power source.

  Further, in the power supply system of the present invention in which the charging schedule is set using a commercial power supply charging schedule in which charging of the vehicle-mounted battery has a minimum cost, the display means for displaying information and the solar power by the charging schedule setting means When a charging schedule for charging the in-vehicle battery with only electric power from a photovoltaic device is set and when a charging schedule composed of the solar power charging schedule and the commercial power supply charging schedule is set, the in-vehicle battery Display control means for controlling the display means so that information indicating that the vehicle-mounted battery is charged is displayed based on a charging schedule at which charging is at a minimum cost. In this way, the user can be informed that charging is performed based on the charging schedule with the minimum cost.

  In addition, in the power supply system of the present invention in which the charge schedule for charging the vehicle-mounted battery is set only by the power from the commercial power source when the required power amount cannot be covered by the commercial power supply amount, information is displayed. And a charging schedule for charging the in-vehicle battery with only power from the commercial power source when the required power amount for charging cannot be covered by the commercial power supply amount by the display schedule setting unit and the charging schedule setting unit. Is displayed, information indicating that charging of the in-vehicle battery cannot be completed by the received charging completion desired date and / or information indicating the date and time when charging of the in-vehicle battery is predicted to be completed is displayed. Display control means for controlling the display means.

The power supply system control method of the present invention includes:
Connected to a commercial power supply and a solar power generation device that generates power using sunlight, having a connection unit connected to a vehicle-mounted charger that manages the vehicle-mounted battery and a vehicle-mounted battery management device that manages the vehicle-mounted battery Supply power from the solar power generation device and power from the commercial power source to the charger, connection between the solar power generation device and the charger, and connection between the commercial power source and the charger. A connection switching means for switching, and a relation storage means for storing a power generation amount seasonal time relationship as a relationship between the power generation amount by the solar power generation device and the season and time,
(A) Accepting input of a desired charging completion date and time of the in-vehicle battery, acquiring battery information including the stored amount of the in-vehicle battery and the stored amount at the completion of charging from the battery management device, and acquiring the acquired stored amount And the amount of power required for charging the vehicle-mounted battery based on the amount of electricity stored when charging is completed, and the photovoltaic power generation by the received charging completion desired date and time based on the power generation amount seasonal time relationship Calculate the amount of photovoltaic power generation as the amount of power generated by the device,
(B) When the required amount of electric power for charging can be covered by the amount of electric power generated by photovoltaic power, a charging schedule for charging the in-vehicle battery with only electric power from the photovoltaic power generation device is set, and When the solar power generation amount cannot be covered by the solar power generation amount, the solar power charging schedule for charging the vehicle-mounted battery with the power from the solar power generation device and the required power amount for charging are covered by the solar power generation power amount. A charging schedule consisting of a commercial power supply charging schedule for charging the in-vehicle battery with the power from the commercial power supply for an insufficient amount of power that cannot be set,
(C) controlling the connection switching means so that electric power for charging the in-vehicle battery is supplied to the charger based on the set charging schedule;
This is the gist.

  In the control method of the power supply system of the present invention, the battery information including the charged amount of the in-vehicle battery and the charged amount at the completion of charging is acquired from the battery management device while receiving the input of the charging completion date and time of the in-vehicle battery. Based on the acquired amount of electricity stored and the amount of electricity stored at the end of charging, the amount of power required for charging the vehicle-mounted battery is calculated, and the solar power is received by the desired date of completion of charging received based on the relationship between the power generation amount and the seasonal time. The amount of photovoltaic power generation as the amount of power generated by the power generation device is calculated. When the amount of power required for charging can be covered by the amount of photovoltaic power generation, a charging schedule for charging the on-vehicle battery with only the power from the photovoltaic power generation device is set, and the amount of power required for charging is determined by the amount of photovoltaic power generation. When it is not possible to cover the solar charging schedule for charging the in-vehicle battery with the electric power from the solar power generation device and the in-vehicle battery for the insufficient amount of electric power that cannot be covered by the amount of solar power generation A connection switching means for setting a charging schedule comprising a commercial power supply charging schedule for charging the electric power from the commercial power supply, and for supplying electric power for charging the vehicle-mounted battery to the charger based on the set charging schedule To control. As a result, it is possible to suppress charging of the in-vehicle battery beyond the desired charging completion date and time, and to suppress charging cost.

It is a block diagram which shows the outline of a structure of the house 30 and the motor vehicle 20 provided with the electric power supply system 60 as one Example of this invention. It is explanatory drawing which shows an example of a power generation amount seasonal time basic relationship table. It is explanatory drawing which shows an example of a weather prediction information table. It is explanatory drawing which shows an example of a power rate seasonal time relationship table. It is a flowchart which shows an example of the electric power supply control routine performed by the system electronic control unit 70 of an Example. It is explanatory drawing which shows an example of an input reception screen. It is explanatory drawing which shows an example of a commercial power supply charging schedule. It is explanatory drawing which shows an example of the table which converted the data of the weather forecast information table into the correction coefficient. It is a flowchart which shows an example of a display process at the time of completion of charge. It is explanatory drawing which shows an example of the display screen displayed when charge completion is impossible. It is explanatory drawing which shows an example of a solar charging schedule. It is a flowchart which shows an example of a display process at the time of completion of charge. It is explanatory drawing which shows an example of the display screen displayed when charge completion is possible.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a house 30 and an automobile 20 including a power supply system 60 as an embodiment of the present invention. The vehicle 20 of the embodiment is a hybrid vehicle or an electric vehicle that travels by power from a motor 21 configured as a synchronous generator motor, for example, and is configured as a secondary battery such as a lithium ion battery that exchanges power with the motor 21. The battery 22, the charger 24 that charges the battery 22 using AC power from outside the vehicle in a state where the vehicle is stopped, and the battery electronic control unit that manages the battery 22 and controls the charger 24 (hereinafter referred to as the battery 24) 26) and a main electronic control unit (not shown) that controls the entire vehicle including the motor 21. Connected to the charger 24 is a vehicle-side connector 28 that can be coupled to a plug 69 attached to a charging cable 68 for supplying AC power from outside the vehicle. A relay for connecting / disconnecting the vehicle side connector 28 and the battery 22, an AC / DC converter for converting AC power from outside the vehicle into DC power, and DC voltage converted by the AC / DC converter by converting the voltage A DC / DC converter for supplying to the battery 22 is included. Thereby, the automobile 20 according to the embodiment can start running after the battery 22 is sufficiently charged using the AC power from outside the vehicle in a state where the system is stopped.

  The battery ECU 26 is configured as a microprocessor centered on a CPU (not shown). In addition to the CPU, a ROM that stores a processing program, a RAM that temporarily stores data, a nonvolatile memory such as a flash memory, and an input / output port And a communication port. The battery ECU 26 has a signal necessary for managing the battery 22, for example, a voltage between terminals from a voltage sensor (not shown) installed between terminals of the battery 22, a current (not shown) attached in the vicinity of the output terminal of the battery 22. The charge / discharge current from the sensor is input. The battery ECU 26 outputs a control signal for driving a relay, an AC / DC converter, a DC / DC converter, etc. included in the charger 24. If necessary, data relating to the state of the battery 22 is communicated to other data. To the electronic control unit. Further, the battery ECU 26 calculates the storage amount SOC based on the integrated value of the charge / discharge current detected by the current sensor in order to manage the battery 22, and travels with the power from the motor 21 (motor travel). The unit distance power consumption Emt, which is the amount of power consumed per unit distance, is calculated based on the power from the battery 22 (the product of the inter-terminal voltage and the charge / discharge current), and the calculated value is non-volatile. Stored in the memory. The nonvolatile memory includes a target storage amount SOC * (for example, 80%, 90%, etc.) that is a target value of the storage amount SOC of the battery 22 and a lower limit storage amount SOCmin (that is an allowable lower limit value of the storage amount SOC. The storage capacity Ebf (for example, 5 kWh, 10 kWh, etc.) when the battery 22 is fully charged is also stored.

  The house 30 of an Example is the electric power from one among the solar power generation device 40 which has the some photovoltaic cell which can generate electric power using sunlight, and was attached on the roof, and commercial power supply (AC100V) 50. Is selected and supplied to the charger 24 of the automobile 20.

  The power supply system 60 includes a charging cable 68 to which a plug 69 that can be coupled to the vehicle-side connector 28 connected to the charger 24 of the automobile 20 is attached, a relay device 66 having two relays 63 and 64, and a relay And a system electronic control unit 70 for controlling the device 66. The relay 63 of the relay device 66 is a DC / AC converter 42 that converts direct current power from the solar power generation device 40 into alternating current power, and the alternating current power from the DC / AC converter 42 is approximately converted to the voltage of the alternating current power from the commercial power supply 50. It is connected to the solar power generation device 40 through an AC / AC converter 44 that converts the AC power to an equal predetermined voltage, and the solar power generation device 40 and the charging urine cable 68 are connected or disconnected. The relay 64 of the relay device 66 is connected to the commercial power supply 50 via a distribution board 54 that supplies power from the commercial power supply 50 to various loads 52, and is connected to and connected to the commercial power supply 50 and the charging cable 68. Release. In the relay device 66, one of the relays 63 and 64 is turned on and turned off with the other, or both are turned off, and both the relays 63 and 64 are not turned on. In addition, in an Example, when the electric power generated by the solar power generation device 40 is generated, solar power is supplied so that AC power of a predetermined voltage is supplied from the relay 63 to the power line on the solar power generation device 40 side by an electronic control unit (not shown). The power generator 40, the DC / AC converter 42, the AC / AC converter 44, and the like are controlled. When the relay 63 is off, power is supplied from this power line to a house battery (not shown), and when the relay 63 is on, this power is supplied. It is assumed that power is supplied to the charger 24 of the automobile 20 without supplying power from the line to the battery for the house.

  The system electronic control unit 70 is configured as a microprocessor centered on the CPU 72. In addition to the CPU 72, a ROM 74 for storing processing programs, a RAM 76 for temporarily storing data, input / output ports and communication ports (not shown), and the like. Is provided. The system electronic control unit 70 is supplied with a storage medium 79 (for example, a hard disk or the like) that stores an instruction signal from a touch panel display 78 capable of inputting various instructions by a user and information necessary for supplying power to the charger 24. And a connection signal from a sensor (not shown) for detecting the connection between the charging cable 68 and the vehicle-side connector 28. The system electronic control unit 70 outputs drive signals for turning on and off the relays 63 and 64, control signals for controlling display on the display 78, various information to the storage medium 79, and the like. The system electronic control unit 70 can communicate with the battery ECU 26 of the automobile 20 via the charging cable 68 when the charging cable 68 and the vehicle-side connector 28 are connected. As a result, the system electronic control unit 70 can exchange various information and data with the battery ECU 26. The information stored in the storage medium 79 includes basic values (for example, values during fine weather) of the power generation amount (generated power amount) of the solar power generation device 40 and seasons (for example, four categories corresponding to the four seasons) Basic relationship of power generation amount seasonal time as a relationship with 12 times corresponding to the number of months) and time (for example, several categories corresponding to the amount of solar radiation in a day and 24 categories corresponding to the number of hours per day) SPb, charge per unit of electric power 50, season (for example, two categories of summer and other seasons, 12 categories corresponding to the number of months, etc.) and time (for example, general power consumption) Power rate seasonal time relationship CP as a relationship with daytime and midnight, or several divisions that subdivide a day), commercial supply power Pwc as power that can be supplied from the commercial power supply 50 to the charger 24 (For example, you And 1 kW or 2 kW determined based on the contract contents between the power company and the characteristics of the switchboard 32, etc.), and is appropriately acquired as the latest information from a communication line such as the Internet (not shown) via the system electronic control unit 70 Memorized weather forecast information WF (for example, information indicating a weather forecast by sunny, rainy or snowy, cloudy for each date and time, or weather information by several categories corresponding to the amount of solar radiation for each date and time) Etc.). FIG. 2 shows an example of a table representing the power generation seasonal time basic relationship SPb, FIG. 3 shows an example of a table representing the weather forecast information WF, and FIG. 4 shows an example of a table representing the electricity rate seasonal time relationship CP. In the embodiment, in order to make the explanation easy to understand, the maximum value of the generated power (the amount of generated power per unit time) of the photovoltaic power generation apparatus 40 is smaller than the commercial supply power Pwc supplied from the commercial power supply 50. To do.

  Next, the operation of the power supply system 60 of the embodiment thus configured, particularly the operation when one of the power from the solar power generation device 40 and the power from the commercial power supply 50 is selected and supplied to the charger 24. Will be described. FIG. 5 is a flowchart showing an example of a power supply control routine executed by the system electronic control unit 70. This routine is executed when the charging cable 68 and the vehicle-side connector 28 are connected. When the charging cable 68 and the vehicle-side connector 28 are connected, the battery ECU 26 controls the charger 24 so that the battery 22 is charged using the electric power from the charging cable 68.

  When the power supply control routine is executed, the CPU 72 of the system electronic control unit 70 first runs the motor of the storage amount SOC of the battery 22, the target storage amount SOC *, the lower limit storage amount SOCmin, the storage capacity Ebf, and the automobile 20. Unit distance power consumption Emt, commercial supply power Pwc as power that can be supplied from the commercial power source 50 to the charger 24, current date and time Dtnow, and other data necessary for control are input (step S100). A process of calculating the required charging energy Echg * required for charging the battery 22 by the following equation (1) by multiplying the SOC * minus the stored energy SOC by the storage capacity Ebf is executed (step S110). Here, the storage amount SOC of the battery 22, the target storage amount SOC *, the lower limit storage amount SOCmin, the storage capacity Ebf, and the unit distance power consumption Emt when the motor is running are stored in a non-illustrated nonvolatile memory of the battery ECU 26, respectively. It is assumed that the input is made by communication. Further, the commercial supply power Pwc is input from the storage medium 79. Furthermore, the current date and time Dtnow is input from a system clock (not shown) of the system electronic control unit 70.

  Echg * = Ebf ・ (SOC * -SOC) (1)

  Subsequently, an input acceptance screen for the desired charging completion date and time Dt * of the battery 22 mounted on the automobile 20 is displayed on the display 78 (step S120). After the input acceptance screen is displayed on the display 78, a predetermined time tref (for example, several times) is displayed. Minutes) (step S130), a process of waiting for the input of the desired charging completion date and time Dt * is executed (step S140). FIG. 6 shows an example of the input reception screen. In the embodiment, the charging completion desired date / time Dt * is determined to be accepted when the user inputs the date / time by the numeric keypad on the illustrated touch panel and presses the “OK” button. In the embodiment, the date and time of the input reception screen is displayed as a default date and time after a predetermined time tset from the current date and time, and is reset to the initial value when the “Clear” button in the figure is pressed. It was supposed to be. As the predetermined time tset, a time normally required for charging the battery 22 using only the electric power from the commercial power supply 50 when charging the battery 22 from the lower limit storage amount SOCmin to the target storage amount SOC * (for example, several hours) ) Etc. can be used.

  When the predetermined time period tref has passed without the input of the charging completion desired date and time Dt * being received after the input reception screen is displayed, it is determined that the charging of the battery 22 is completed as soon as possible, and only the power from the commercial power supply 50 is used. The commercial power supply charging schedule Schc is set so that electric power is supplied to the charger 24 with the required electric energy Echg * (step S150), and the set commercial power supply charging schedule Schc is set as it is as the charging schedule Sch (step S160). ) Starts supplying power to the charger 24 in accordance with the set charging schedule Sch (step S340). When a predetermined end condition is satisfied (step S350), the power supply to the charger 24 is ended (step S350). S360), the power supply control routine is terminated.Power supply from the commercial power supply 50 to the charger 24 is performed by turning on the relay 64 while the relay 63 is turned off. Thereby, the battery 22 can be charged using the electric power from the commercial power source 50. Here, in order to complete the charging of the battery 22 as soon as possible, only the power from the commercial power source 50 is used because the maximum value of the generated power of the solar power generation device 40 of the embodiment is supplied from the commercial power source 50. This is because the power is smaller than Pwc. FIG. 7 shows an example of a table representing the commercial power supply charging schedule Schc. In the figure, the input current date and time Dtnow can be used for the power supply start date and time Dtcs, and the power supply end date and time Dtcf can be obtained by dividing the time required for charging Echg * by the commercial supply power Pwc into the current date and time Dtnow. Additions can be used. The schedule number shown in the left column is only the value 1 means that only one set of schedules composed of combinations of the power supply start date and time Dtcs and the power supply end date and time Dtcf is set. The predetermined end condition includes a condition that the current date and time Dt * from the system clock becomes the power supply end date and time set in the charging schedule Sch, a condition that the storage amount SOC of the battery 22 reaches the target storage amount SOC *, charging Conditions for releasing the connection between the cable 68 and the vehicle-side connector 28 can be used.

  When the input of the desired charging completion date and time Dt * is received before the predetermined time tref has elapsed after the input acceptance screen is displayed in steps S130 and S140, the charging of the battery 22 is completed as much as possible by the desired charging completion date and time Dt *. The charge completion desired date / time Dt * and the current date / time Dtnow received on the input reception screen, the power generation amount seasonal time basic relationship SPb as the relationship between the basic value of the power generation amount of the photovoltaic power generation device 40 and the season and time, Data required for control, such as a power rate seasonal time relationship CP as a relationship between the charge per unit amount of electric power of the commercial power supply 50 and the season and time, weather forecast information WF, etc. are further input (step S170), and the input charging completion hope The time obtained by subtracting the current date and time Dtnow from the date and time Dt * is multiplied by the commercial supply power Pwc to satisfy the following equation (2). The commercial supply maximum power amount Ecmax is calculated as the maximum amount of power that can be supplied from the commercial power source 50 to the charger 24 by the desired completion date and time Dt * (step S180), and the input power generation amount seasonal time basic relationship SPb is calculated. Based on the weather prediction information WF, the power generation amount seasonal time relationship SP as the relationship between the power generation amount of the solar power generation device 40 and the season and time is set (step S190), and the power generation amount of the set solar power generation device 40 is set. The maximum amount of power that can be supplied from the solar power generation device 40 to the charger 24 by the desired charging completion date / time Dt * by integrating the power generation amount of the seasonal time-related SP from the current date / time Dtnow to the desired charging completion date / time Dt *. The maximum photovoltaic power generation amount Esmax is calculated (step S200). Here, it is assumed that the power generation amount seasonal time basic relationship SPb, the power related seasonal time relationship CP, and the weather prediction information WF are respectively stored in the storage medium 79. Further, in the embodiment, the setting of the power generation amount seasonal time relation SP is performed by correcting the weather data of the weather prediction information WF illustrated in FIG. 3 as a correction coefficient corresponding to the amount of solar radiation expected for each weather (for example, sunny, cloudy, rainy) Or a table converted to values 1.0, 0.5, 0.0, etc. corresponding to each of snow), and the correction factor for each corresponding date and time in this table is shown in FIG. This is performed by multiplying the basic value of the power generation amount of the time basic relationship SPb. FIG. 8 shows an example of a table obtained by converting the weather data of the weather forecast information WF in FIG. 3 into correction coefficients.

  Ecmax = (Dt * -Dtnow) ・ Pwc (2)

  When the commercial supply maximum power amount Ecmax and the solar power generation maximum power amount Esmax are set in this way, the charge required power amount Echg * is compared with the commercial supply maximum power amount Ecmax (step S210), and the charge required power amount Echg * is the maximum commercial supply power amount. When the power amount is larger than Ecmax, it is determined that the power supply to the charger 24 cannot be completed by the power from the commercial power source 50 by the desired charging completion date and time Dt *. The commercial power supply charging schedule Schc is set so that electric power is supplied to the charger 24 with the required electric energy Echg * only by electric power (step S220), and the set commercial power supply charging schedule Schc is set as the charging schedule Sch as it is. (Step S230), charging completion desired date and time It performs display processing to the charging completion impossible at the time of the display 78 of up to t * (step S240). This display process is performed by the display process when charging is not possible as illustrated in FIG. Here, the description of the power supply control in FIG. 5 is temporarily interrupted, and the display process in FIG. 9 will be described.

  In the display process when charging cannot be completed in FIG. 9, the combination of the power supply amount and the power charge when power is supplied from the commercial power source 50 to the charger 24 until the charging completion desired date and time Dt * (that is, during charging). Is set (steps S400 to S430), and when the power supply of the required amount of energy Echg * is supplied from the commercial power source 50 to the charger 24 beyond the desired charging completion date and time Dt * (that is, the charging is completed) Information on the combination of the charging completion date and time and the power charge (steps S440 to S480), and the fact that charging of the battery 22 cannot be completed by the charging completion desired date and time Dt * Information indicating that the battery 22 is charged using only electric power and the two sets of combination information set are displayed on the display 78 (STEP). Flop S490), to end the display processing.

  Specifically, first, the commercial supply maximum electric energy Ecmax is set to the predicted supply electric energy Ef1 predicted to be supplied from the commercial power supply 50 to the charger 24 by the desired charging completion date and time Dt * (step S400). Based on the charge schedule Sch and the power charge seasonal time relationship CP of the commercial power supply 50, a predicted charge Costf1 that is predicted as a charge required by the power supply from the commercial power supply 50 until the desired charge completion date and time Dt * is calculated (step S410). ). Subsequently, the storage amount SOC of the battery 22 when the desired charge completion date / time Dt * is reached by the following equation (3) based on the storage amount SOC, the storage capacity Ebf, and the maximum commercial supply amount Ecmax of the battery 22 is predicted. Predicted power storage amount SOCf1 is calculated (step S420). Based on the calculated predicted power storage amount SOCf1, the lower limit power storage amount SOCmin of battery 22, power storage capacity Ebf, and unit distance power consumption amount Emt, the predicted power storage amount is calculated by equation (4). Based on the electric power from the battery 22 charged up to the SOCf1, the predicted travelable distance Distf1 that is predicted as the distance at which the automobile 20 can continue the motor travel is calculated (step S430).

SOCf1 = SOC + Ecmax / Ebf (3)
Distf1 = Ebf ・ (SOCf1-SOCmin) / Emt (4)

  Next, the charging completion prediction date and time Dtf2 predicted as the charging completion date and time when the required power amount Echg * is supplied from the commercial power source 50 to the charger 24 beyond the desired charging completion date and time Dt * is set as the charging schedule Sch. (Step S440), the required charge power amount Echg * is set to the predicted supply power amount Ef2 predicted to be supplied from the commercial power source 50 to the charger 24 (step S450), and the charge schedule Sch and power Based on the charge seasonal time relation CP, a predicted charge Costf2 that is predicted as a necessary charge by supplying power from the commercial power supply 50 until the charging completion date and time is calculated (step S460). Subsequently, the target storage amount SOC * is set to the predicted storage amount SOCf2 predicted as the storage amount SOC at the time when the charging is completed (step S470), and the calculated predicted storage amount SOCf2 and the lower limit storage amount SOCmin of the battery 22 are set. Based on the power storage capacity Ebf and the unit distance power consumption amount Emt, the predicted travelable distance Distf2 that is predicted as the distance at which the motor vehicle 20 can continue the motor travel is calculated by the power from the battery 22 charged to the predicted power storage amount SOCf2. (Step S480).

  Then, information indicating that charging of the battery 22 cannot be completed by the desired charging completion date and time Dt *, information indicating that the battery 22 is charged using only the electric power from the commercial power supply 50, and the desired charging completion date and time Dt * First combination information of the predicted power supply amount Ef1, the predicted charge Costf1, the predicted power storage amount SOCf1, and the travelable predicted distance Distf1, and the charging completion predicted date and time Dtf2, the predicted supply power amount Ef2, the predicted charge Costf2, and the predicted power storage amount SOCf2 And the second combination information of the predicted travelable distance Distf2 are displayed on the display 78 (step S490), and the display process when the charging is impossible is terminated. FIG. 10 shows an example of a display screen displayed when the charging cannot be completed. In the figure, information shown in the upper part as reference information corresponds to the first combination information, and information shown in the lower part corresponds to the second combination information. With such a display, the user knows that charging of the battery 22 cannot be completed by the charging completion desired date and time Dt * input by the user, or that the battery 22 is charged using only power from the commercial power source 50. Power charge required for power supply up to the desired charge completion date and time Dt *, information such as the distance that the motor can run by such power supply, and the power up to the expected charge completion date and charge completion date and time It is possible to know information such as the electricity charge necessary for supply and the distance at which the motor can be driven by such electricity supply. In the foregoing, the display process when charging is not complete in FIG. 9 has been described.

  Returning to the description of the power supply control in FIG. When the display process is performed when the charging cannot be completed in this way, whether or not the display content is confirmed by the user, that is, whether or not the battery 22 is charged using only the power from the commercial power source 50 is confirmed. (Step S330), when the confirmation by the user is not performed, the process returns to step S120, and when the confirmation by the user is performed, the power supply to the charger 24 is terminated in accordance with the set charging schedule Sch. The process is executed until the condition is satisfied (steps S340 to S360), and the power supply control routine is terminated. Thereby, the battery 22 can be charged using the electric power from the commercial power source 50. In the embodiment, whether or not the confirmation by the user has been performed is determined based on whether the “OK” button or the “Cancel” button is pressed on the display screen of the display 78 illustrated in FIG. 10.

  When the required power amount Echg * is equal to or less than the commercial supply maximum power amount Ecmax in step S210, it is determined that the power supply to the charger 24 can be completed by the desired charging completion date and time Dt *, and the required power amount Echg * is set. Comparison is made with the maximum amount of photovoltaic power generation Esmax (step S250). When the required power amount Echg * is less than or equal to the maximum solar power generation amount Esmax, it is determined that the power supply to the charger 24 can be completed only by the power from the solar power generation device 40 by the desired charging completion date and time Dt *, A solar charge schedule Schs is set based on the power generation amount seasonal time relationship SP so that power supply of the required power amount Echg * from the solar power generation device 40 to the charger 24 is performed by the charge completion desired date and time Dt * ( In step S260, the set solar charge schedule Schs is set as it is as the charge schedule Sch (step S270), and display processing on the display 78 when the charge completion is possible until the desired charge completion date and time Dt * is performed (step S320). FIG. 11 shows an example of a table representing the solar charge schedule Schs. In the figure, the schedule numbers shown in the left column have a value 1 and a value 2 because different times (for example, the daytime time zone and the day after next day) that are combinations of the power supply start date and time Dtss and the power supply end date and time Dtsf. This means that two sets of schedules are set. Moreover, the display process of step S320 is performed by the display process at the time of completion of charge illustrated in FIG. Here, the description of the power supply control in FIG. 5 is temporarily interrupted, and the display process in FIG. 12 will be described.

  In the display process when charging is possible in FIG. 12, the required power amount Echg * for charging from the solar power generation device 40 or the commercial power source 50 (currently only the solar power generation device 40) to the charger 24 based on the set charging schedule Sch. Estimated charging completion date and time Dtf (which will be the charging completion desired date and time Dt * at the latest) is set as the charging completion date and time when the power is supplied (step S500), and the photovoltaic power generator 40 and the commercial power source 50 (now Is set to the predicted power supply amount Efg * that is predicted to be supplied from the solar power generation device 40 only to the charger 24 (step S510), and the solar power generation device 40 and the commercial power source 50 are set. (Currently, only the solar power generation device 40) The estimated charge Costf predicted as a necessary charge by the power supply from the charging schedule Sch and the power Set on the basis of the gold season time relationship CP (now, set to the value 0 without the use of electricity rates seasonal time relationship CP) to (step S520). Here, the reason why the value 0 is set to the estimated charge Costf is that the charge necessary for the power generation of the solar power generation device 40 of the embodiment is basically not generated except for the initial cost.

  Then, the target storage amount SOC * is set to the predicted storage amount SOCf predicted as the storage amount SOC when the charge completion date / time is reached (step S530), the predicted storage amount SOCf, the lower limit storage amount SOCmin of the battery 22, and the storage capacity. Based on Ebf and the unit distance power consumption amount Emt, a predicted travelable distance Distf that is predicted as a distance at which the automobile 20 can continue the motor travel is calculated based on the electric power from the battery 22 charged to the predicted power storage amount SOCf (step S540), information indicating that the battery 22 is to be charged with a schedule in which the power rate is the lowest, that is, the minimum cost, the charging completion predicted date and time Dtf, the predicted supplied power amount Ef, the predicted fee Costf, and the predicted stored electricity amount SOCf. Combination information with the predicted distance Distf is displayed on the display 78 (step S550), to terminate the charging can be completed during the display process. FIG. 13 shows an example of a display screen displayed when the charging can be completed. In the above, the display process at the time of completion of charge of FIG. 12 was demonstrated.

  Returning to the description of the power supply control in FIG. When the display process is performed when the charging can be completed, it is determined whether or not the display content is confirmed by the user, that is, whether or not charging of the battery 22 is confirmed according to the schedule of the minimum cost (step S330). When the confirmation by the user is not performed, the process returns to step S120, and when the confirmation by the user is performed, the power supply to the charger 24 is executed according to the set charging schedule Sch until a predetermined end condition is satisfied. (Steps S340 to S360), and the power supply control routine ends. Power supply from the solar power generation device 40 to the charger 24 is performed by turning on the relay 63 while the relay 64 is turned off. Thereby, the battery 22 can be charged using the electric power from the solar power generation device 40.

  When it is determined in step S250 that the required power amount Echg * is greater than the maximum solar power generation amount Esmax, the desired charging completion date and time using both the power from the solar power generation device 40 and the power from the commercial power source 50. It is determined that the power supply to the charger 24 is completed by Dt *, and the solar power generation is performed at all times when the power can be supplied from the solar power generation device 40 to the charger 24 by the desired charging completion date / time Dt *. A temporary solar charge schedule Schstmp as a temporary solar charge schedule is set based on the power generation amount seasonal time relationship SP so that power is supplied from the device 40 to the charger 24 (step S280). At present, since it is considered that the required power amount Echag * is larger than the maximum photovoltaic power generation amount Esmax, even if the battery 22 is charged according to the solar charge provisional schedule Schstmp set in this way, the desired charge completion date and time Dt * Power supply for the required amount of electric charge Echg cannot be completed by *. Subsequently, the charger 24 from the commercial power source 50 is used for a time excluding a time (hereinafter referred to as a set time) in which a schedule for supplying power to the charger 24 according to the set solar charge temporary schedule Schstmp is set. The commercial power supply charging schedule Schc is set based on the power rate seasonal time relation CP so that the power supply to the terminal is performed at the minimum cost (step S290).

  Here, in the embodiment, the commercial power supply charging schedule Schc is set in the following order. First, priority is given to the time zone where the charge is cheap outside the set time of the solar charge temporary schedule Schstmp (in the embodiment using the example of FIG. 4, priority is given to the so-called late-night time zone from 23:00 to 7:00. ) Attempt to set the commercial power supply charging schedule Schc so that power is supplied from the commercial power supply 50 to the charger 24. When the setting of the commercial power supply schedule Schc that can complete the power supply of the required power amount Echg * by the desired charging completion date and time Dt * together with the solar charge temporary schedule Schstmp can be performed, the set commercial power charge Processing subsequent to step S300 is performed using the schedule Schc. When the commercial power supply charging schedule Schc cannot be set, that is, the commercial power supply charging schedule is set so that power is supplied from the commercial power supply 50 in all the time except the set time of the solar charge temporary schedule Schstmp. Even if the commercial power supply temporary schedule Schctmp is set, the power generation amount of the photovoltaic power generation apparatus 40 within the set time of the solar charge temporary schedule Schstmp is not achieved when the power supply of the required power amount Echg * cannot be completed. Commercial power supply every unit time (for example, every 30 minutes, every hour, etc.) as the time for supplying power from the commercial power supply 50 with priority given to the time when the power is small (for example, the morning and evening time or the time when the weather is cloudy in the daytime) By adding to the temporary charge schedule Schctmp Finally, set the commercial power charging schedule Schc can complete the power supply of charging required power amount Echg * to complete charging requested time Dt * together with the power supply from the solar power generation device 40.

  When the commercial power charging schedule Schc is set in this way, the solar charging schedule Schs is set by changing a part of the temporary solar charging schedule Schstmp as necessary based on the set commercial power charging schedule Schc (step S300). ). In the embodiment, the solar power charging schedule Schs is set so that power is not supplied from the solar power generation device 40 for the time when the commercial power charging schedule Schc is duplicated in the temporary solar charging schedule Schstmp. This is done by changing a part of the solar charge provisional schedule Schstmp. Then, a combination of the set commercial power supply charging schedule Schc and the solar charging schedule Schs is set as the charging schedule Sch (step S310), and the display processing when the charging can be completed is performed (step S320). It is determined whether or not the display content has been confirmed, that is, whether or not it has been confirmed that the battery 22 is to be charged according to the schedule of the minimum cost (step S330). If the confirmation by the user is not performed, the process returns to step S120. When the confirmation is made by the user, the power supply to the charger 24 is executed according to the set charge schedule Sch until a predetermined end condition is satisfied (steps S340 to S360), and the power supply control routine is ended. Thus, in the power supply system 60 of the embodiment, when the required charging power Echg * can be covered by the solar power generation maximum power amount Esmax, the charging schedule for charging the battery 22 only with the power from the solar power generation device 40. Since the battery 22 is charged according to Sch (that is, a schedule in which charging costs are not generated in the embodiment), charging of the battery 22 is prevented from being performed beyond the desired charging completion date and time Dt * and charging cost is also suppressed. be able to. Further, when the required charging power Echg * cannot be covered by the maximum solar power generation amount Esmax, the solar charging schedule Schs for charging the battery 22 with the power from the solar power generation device 40, and the required charging power amount Echg *. The battery 22 is charged according to a charging schedule Sch that includes a commercial power supply charging schedule Schc for charging the battery 22 with the electric power from the commercial power supply 50 with respect to an insufficient amount of power that cannot be covered by the maximum solar power generation amount Esmax. In other words, the battery 22 is charged by setting the charging schedule Sch so that the electric power from the photovoltaic power generation device 40 is given priority over the electric power from the commercial power supply 50 so that the required electric energy Echg * is supplied. Therefore, charging of the battery 22 is desired to be completed. It is possible to suppress the cost of the charge is suppressed from being performed beyond the time Dt *. Furthermore, when the required power for charging Echg * cannot be covered by the maximum amount of solar power generation Esmax, the required amount of charging Echg * cannot be covered by the maximum amount of solar power generation Esmax. Thus, since the commercial power supply charging schedule Schc at which the charging of the battery 22 is the minimum cost is set based on the power rate seasonal time relation CP, the charging cost can be further suppressed. In addition, as the power generation amount seasonal time relationship SP of the solar power generation device 40, a correction coefficient based on the weather forecast information WF is added to the power generation amount seasonal time basic relationship SPb between the basic value of the power generation amount of the solar power generation device 40 and the season and time. Since what is obtained by application is used, the power generation amount seasonal time relationship SP can be made more appropriate, and charging costs can be more appropriately suppressed.

  According to the power supply system 60 of the embodiment described above, the charging required power amount Echg * necessary for charging the battery 22 to the target charged amount SOC * by accepting the input of the charging completion desired date and time Dt * by the user. The maximum photovoltaic power generation maximum energy Esmax that can be supplied from the photovoltaic power generation device 40 to the charger 24 by the desired charging completion date and time Dt * is calculated, and the required power amount Echg * is covered by the maximum photovoltaic power generation amount Esmax. When it is possible, power is supplied to the charger 24 according to the charging schedule Sch for charging the battery 22 only with the power from the solar power generation device 40, and the required power Echg * is provided by the maximum solar power generation amount Esmax. When this is not possible, the battery 22 is charged by the power from the solar power generation device 40. The commercial power supply charging schedule Schc for charging the battery 22 with the electric power from the commercial power supply 50 for the insufficient amount of electric power that cannot be covered by the photovoltaic power generation maximum electric energy Esmax with the optical charging schedule Schs and the required electric energy Echg * Since the power supply 24 to the charger 24 is performed according to the charging schedule Sch consisting of the above, the charging of the battery 22 mounted on the automobile 20 is prevented from exceeding the desired charging completion date and time Dt * and the charging cost is suppressed. can do.

  In the power supply system 60 of the embodiment, when the required power amount Echg * cannot be covered by the solar power generation maximum power amount Esmax, the commercial power source 50 is used for the time excluding the set time of the solar charge temporary schedule Schstmp. The commercial power supply charging schedule Schc is set based on the power rate seasonal time relation CP so that the power supply to the battery charger 24 is performed at the minimum cost, but the set time of the solar charging temporary schedule Schcstmp is excluded. The commercial power supply charging schedule Schc so that the power supply from the commercial power supply 50 to the charger 24 is given priority over the date and time near the charge completion desired date and time Dt *. May be set. In this case, the power rate seasonal time relation CP may not be stored in the storage medium 79. Even in this case, when the required power amount Echg * can be covered by the maximum solar power generation amount Esmax, the battery 22 is charged only by the power from the solar power generation device 50, and the required power amount Echg * is charged. Since the charging of the battery 22 with the power from the solar power generation device 50 is prioritized when the maximum amount of solar power generation Esmax cannot be covered, the charging cost can be suppressed.

  In the power supply system 60 according to the embodiment, the weather prediction information includes the basic value of the power generation amount of the solar power generation device 40 and the power generation amount seasonal time base SPb of the season and time as the power generation seasonal time relationship SP of the solar power generation device 40. Although what was obtained by applying the correction coefficient based on WF was used, it is good also as what uses power generation seasonal time relation SP as it is.

  In the power supply system 60 of the embodiment, the power rate seasonal time relationship CP as a relationship between the charge per unit power amount of the commercial power supply 50, the season, and the time is used. However, instead of this relationship, it varies depending on the season. A relationship that is not a charge, that is, a power charge time relationship as a relationship between a charge per unit power amount of the commercial power supply 50 and a time may be used.

  In the power supply system 60 of the embodiment, when the charge required power amount Echg * is equal to or less than the maximum solar power generation amount Esmax and the charging schedule Sch for charging the battery 22 only with the power from the solar power generation device 40 is set, When a charge schedule Sch consisting of a solar charge schedule Schs and a commercial power supply charge schedule Schc is set in a state where the required power amount Echg * is equal to or less than the maximum commercial supply power amount Ecmax and greater than the maximum solar power generation amount Esmax, charging is performed. As the display process when it can be completed, information indicating that the battery 22 is charged and a set of combination information are displayed on the schedule with the minimum cost. However, only one of these pieces of information may be displayed. The charging schedule set without performing the display process when charging is possible Or as to power the charger 24 in accordance with Le Sch.

  In the power supply system 60 of the embodiment, a charging schedule Sch for charging the battery 22 only with power from the commercial power source 50 when the required power amount Echg * cannot be covered by the maximum commercial power amount Pcmax is set. In some cases, the charging completion impossible display process indicates that the battery 22 is charged using only information indicating that the charging of the battery 22 cannot be completed by the desired charging completion date and time Dt * and the power from the commercial power source 50. Information and two sets of combination information are displayed, but only a part of the information may be displayed, or charging is performed according to the charging schedule Sch set without performing display processing when charging is not complete. The power may be supplied to the device 24.

  Further, the present invention is not limited to that applied to such a power supply system, and the power supply system control method for controlling the relays 63 and 64 so that power is supplied to the charger 24 according to the charging schedule Sch in the power supply system. It is good also as a form.

The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the example,
The charging cable 68 and the plug 69 correspond to “connection means”, and the relay device 66 having the relays 63 and 64 corresponds to “connection switching means”, and stores various information such as the power generation seasonal time basic relationship SPb. The medium 79 corresponds to “relational storage means”, and displays the input acceptance screen on the display 78 to execute the processes of steps S120 to S140 of the power supply control routine of FIG. Step S100 of the power supply control routine of FIG. 5 in which the electronic control unit 70 is equivalent to the “charging completion desired date and time receiving means” and inputs data relating to the battery 22 such as the storage amount SOC of the battery 22 and the target storage amount SOC *. The system electronic control unit 70 that executes the process corresponds to an “information acquisition unit”, and the required amount of charge Echg * The system electronic control unit 70 that performs the processes of steps S110 and S200 of the power supply control routine of FIG. 5 for calculating and calculating the maximum photovoltaic power generation amount Esmax corresponds to the “power amount calculation means”, and the required charging power When the amount Echg * is less than or equal to the maximum amount of photovoltaic power generation Esmax, a charging schedule Sch for charging the battery 22 only with the power from the photovoltaic power generation device 40 is set, or the required amount of charging Echg * is the maximum amount of photovoltaic power generation The power supply control of FIG. 5 that sets the charging schedule Sch including the commercial power charging schedule Schc for the insufficient amount of power that cannot be covered by the solar charging schedule Schs and the maximum solar power generation amount Esmax when larger than Esmax. Processing of steps S250 to S310 of the routine The system electronic control unit 70 to be executed corresponds to the “charge schedule setting means”, and the steps of the power supply control routine of FIG. 5 for controlling the relays 63 and 64 to supply power to the charger 24 in accordance with the charge schedule Sch. The system electronic control unit 70 that executes the processes of S340 to S360 corresponds to the “switching control means”. Further, the display 78 corresponds to “display means”, and the system electronic control unit 70 that executes the display processing when charging is impossible in FIG. 9 and the display processing when charging is possible in FIG. 12 corresponds to “display control means”. .

  Here, the “connecting means” is not limited to the charging cable 68 and the plug 69, but may be an in-vehicle charger for charging an in-vehicle battery and an in-vehicle battery management device for managing the in-vehicle battery. Any connection can be used. The “connection switching means” is not limited to the relay device 66 having the relays 63 and 64, and may switch between the connection between the photovoltaic power generation device and the charger and the connection between the commercial power source and the charger. It does not matter as long as it is anything. “Relational storage means” is not limited to the storage medium 79 for storing various types of information, and the amount of power generated by the photovoltaic power generation device, the season and time, such as a nonvolatile memory (not shown) of the system electronic control unit 70, etc. Any relationship can be used as long as it stores the seasonal relationship of the amount of power generation as the relationship. The “charging completion date / time receiving means” is not limited to the one that displays the input reception screen on the display 78 and receives the input of the charging completion desired date / time Dt *. Any device may be used as long as it accepts the input of the desired charging completion date and time. The “information acquisition means” is not limited to the one that inputs data related to the battery 22 such as the storage amount SOC of the battery 22 and the target storage amount SOC *, but corresponds to the product of the storage amount SOC and the storage capacity Ebf. Battery information including the charged amount of the in-vehicle battery and the charged amount at the completion of charging is acquired from the battery management device, such as a value to be input or a value corresponding to the product of the target charged amount SOC * and the charged capacity Ebf. Any object can be used. The “electric energy calculation means” is not limited to the one that calculates the required electric energy Echg * or the maximum photovoltaic power generation Esmax, but also the one that calculates the commercial supplied maximum electric energy Ecmax. The amount of power required for charging the in-vehicle battery is calculated based on the amount of electricity and the amount of electricity stored when charging is completed, and power is generated by the photovoltaic power generation device by the desired charging completion date and time received based on the seasonal relationship of power generation amount. Any method can be used as long as it calculates the amount of photovoltaic power generation as the amount of electric power to be generated. As the “charging schedule setting means”, a charging schedule Sch for charging the battery 22 only by the power from the solar power generation device 40 when the required power amount Echg * is less than or equal to the maximum solar power generation amount Esmax is set or charged. When the required power amount Echg * is larger than the maximum solar power generation amount Esmax, the solar power charging schedule Schs and the commercial power source charging schedule Schc for the shortage of power amount that cannot be covered by the maximum solar power generation amount Esmax It is not limited to the one that sets the charging schedule Sch. When the amount of power required for charging can be covered by the amount of photovoltaic power generation, a charging schedule is set for charging the on-vehicle battery using only the power from the photovoltaic power generation device. The amount of energy required for charging to the amount of photovoltaic power generation If it is not possible to cover it, the solar charging schedule for charging the on-vehicle battery with the power from the solar power generation device and the in-vehicle power supply for the shortage of power that cannot be covered by the amount of solar power generation Any charging schedule may be used as long as it sets a charging schedule composed of a charging schedule for commercial power that is charged with electric power from the commercial power supply. The “switching control means” is not limited to one that controls the relays 63 and 64 so that power is supplied to the charger 24 according to the charging schedule Sch, and the charger is controlled based on the set charging schedule. Any device may be used as long as it controls the connection switching means so that electric power for charging the vehicle-mounted battery is supplied. Further, the “display unit” is not limited to the display 78 and may be any device that displays information, such as a device that is not a touch panel type. The “display control means” is not limited to the one that executes the display process when charging is impossible or the display process when charging is possible. When the charging schedule for charging the vehicle is set, or when the charging schedule consisting of the solar charging schedule and the commercial power supply charging schedule is set, the in-vehicle battery is A vehicle-mounted battery that only controls the display means so that information to charge the battery is displayed or the power required from the commercial power supply cannot be provided by the charge schedule setting means even with the commercial power supply. When a charging schedule is set to charge the As long as the display means is controlled to display information indicating that the charging of the in-vehicle battery cannot be completed by the date and / or the date and time when the charging of the in-vehicle battery is predicted to be completed is displayed. It doesn't matter.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

  The present invention can be used in the power supply system manufacturing industry and the like.

  20 automobiles, 21 motors, 22 batteries, 24 chargers, 26 battery electronic control units (battery ECUs), 28 vehicle-side connectors, 30 houses, 40 solar power generation devices, 42 DC / AC converters, 44 AC / AC converters, 50 commercial power supply, 52 load, 54 switchboard, 60 power supply system, 63, 64 relay, 66 relay device, 68 charging cable, 69 plug, 70 system electronic control unit, 72 CPU, 74 ROM, 76 RAM, 78 display 79 Storage medium.

Claims (7)

An on-board charger for charging an in-vehicle battery and a connecting means for connecting to the on-board battery management device for managing the on-board battery, and a solar power generation device that generates power using sunlight and a commercial power source A power supply system connected to supply power from the photovoltaic power generator and power from the commercial power source to the charger;
Connection switching means for switching between the connection between the solar power generation device and the charger and the connection between the commercial power source and the charger;
Relationship storage means for storing a power generation amount seasonal time relationship as a relationship between the power generation amount by the solar power generation device and the season and time;
A charging completion desired date / time receiving means for receiving an input of a charging completion desired date / time of the vehicle battery;
Information acquisition means for acquiring battery information including the storage amount of the in-vehicle battery and the storage amount at the completion of charging from the battery management device;
Based on the acquired amount of stored electricity and the amount of stored electricity at the completion of charging, a required amount of charge required for charging the in-vehicle battery is calculated, and the received charge completion desired date and time based on the power generation amount seasonal time relationship A power amount calculating means for calculating the amount of solar power generated as the amount of power generated by the solar power generation device;
When the required amount of electric power for charging can be covered by the amount of electric power generated by photovoltaic power, a charging schedule for charging the in-vehicle battery with only electric power from the photovoltaic power generation device is set, and the amount of required electric energy for charging is set to the amount of sunlight. When the amount of generated power cannot be covered, the solar charging schedule for charging the in-vehicle battery with the power from the photovoltaic power generation device and the amount of power required for charging cannot be covered by the amount of generated solar power Charging schedule setting means for setting a charging schedule consisting of a commercial power supply charging schedule for charging the vehicle-mounted battery with respect to the amount of power for minutes by the power from the commercial power supply;
Switching control means for controlling the connection switching means so that electric power for charging the in-vehicle battery is supplied to the charger based on the set charging schedule;
A power supply system comprising: The power supply system according to claim 1,
The relation storage means is means for storing a power charge time relationship as a relationship between a charge per unit power amount of the commercial power source and a time,
The charging schedule setting means, when the required amount of electric power for charging cannot be covered by the amount of photovoltaic power generation, the insufficient amount of electric power for which the amount of required charging power cannot be covered by the amount of photovoltaic power generation Is a means for setting a charging schedule using the commercial power supply charging schedule for charging the vehicle-mounted battery at a minimum cost based on the power charge time relationship.
Power supply system. The power supply system according to claim 1 or 2,
The power generation amount seasonal time relationship is a relationship obtained by applying a correction coefficient based on weather prediction information for correcting the basic value to the relationship between the basic value of the power generation amount by the solar power generation device and the season and time. is there,
Power supply system. A power supply system according to any one of claims 1 to 3,
The power amount calculation means is a means for calculating a commercial power supply amount as a power amount that can be supplied from the commercial power source to the charger by the accepted charging completion desired date and time.
When the charging schedule setting means cannot cover the amount of power required for charging even with the amount of commercial supply power, whether the amount of power required for charging can be covered by the amount of photovoltaic power generation or not It is means for setting a charging schedule for charging the vehicle-mounted battery only with power from a commercial power source.
Power supply system. A power supply system according to any one of claims 2 to 4,
Display means for displaying information;
When the charging schedule for charging the vehicle-mounted battery is set only by the electric power from the photovoltaic power generation device by the charging schedule setting means, and the charging schedule consisting of the solar charging schedule and the commercial power supply charging schedule is set. Display control means for controlling the display means to display information to charge the in-vehicle battery based on a charging schedule that minimizes the charging of the in-vehicle battery,
A power supply system comprising: The power supply system according to claim 4,
Display means for displaying information;
When the charging schedule setting means sets the charging schedule for charging the vehicle-mounted battery with only the power from the commercial power source when the required power amount for charging cannot be covered by the commercial power supply amount, the acceptance is performed. The display means is configured to display information indicating that charging of the in-vehicle battery cannot be completed by a desired charging completion date and / or information indicating a date and time when charging of the in-vehicle battery is predicted to be completed. Display control means for controlling;
A power supply system comprising: Connected to a commercial power supply and a solar power generation device that generates power using sunlight, having a connection unit connected to a vehicle-mounted charger that manages the vehicle-mounted battery and a vehicle-mounted battery management device that manages the vehicle-mounted battery Supply power from the solar power generation device and power from the commercial power source to the charger, connection between the solar power generation device and the charger, and connection between the commercial power source and the charger. A connection switching means for switching, and a relation storage means for storing a power generation amount seasonal time relationship as a relationship between the power generation amount by the solar power generation device and the season and time,
(A) Accepting input of a desired charging completion date and time of the in-vehicle battery, acquiring battery information including the stored amount of the in-vehicle battery and the stored amount at the completion of charging from the battery management device, and acquiring the acquired stored amount And the amount of power required for charging the vehicle-mounted battery based on the amount of electricity stored when charging is completed, and the photovoltaic power generation by the received charging completion desired date and time based on the power generation amount seasonal time relationship Calculate the amount of photovoltaic power generation as the amount of power generated by the device,
(B) When the required amount of electric power for charging can be covered by the amount of electric power generated by photovoltaic power, a charging schedule for charging the in-vehicle battery with only electric power from the photovoltaic power generation device is set, and When the solar power generation amount cannot be covered by the solar power generation amount, the solar power charging schedule for charging the vehicle-mounted battery with the power from the solar power generation device and the required power amount for charging are covered by the solar power generation power amount. A charging schedule consisting of a commercial power supply charging schedule for charging the in-vehicle battery with the power from the commercial power supply for an insufficient amount of power that cannot be set,
(C) controlling the connection switching means so that electric power for charging the in-vehicle battery is supplied to the charger based on the set charging schedule;
Control method of power supply system.

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