JP5556651B2 - Power control system, power control method, and power control apparatus - Google Patents

Description

  The present invention relates to a system that controls the boiling of an electric water heater and charging of an electric vehicle based on hourly electricity rate information, and uses power efficiently and under limited contract power and allowable power. The present invention relates to a power control system, a control method, and a power control device for controlling heating of an electric water heater and charging of an in-vehicle battery in order to reduce the charge or, on the contrary, prioritize convenience over the electricity charge. .

  If you make good use of the hourly rate system that is set to equalize power demand, the electricity usage fee will be cheaper. An example of the hourly rate system is from 23:00 to 7:00 It is about 9 yen per kW, about 23 yen from 17:00 to 23:00 and from 7 to 10 before and after that, and about 28 to 33 yen from 10:00 to 17:00. The cheapest electricity usage fee from 23:00 to 7:00 is about 1/3 of the electricity usage fee from 10:00 to 17:00. In the present specification, such information related to the power usage time zone and the power usage fee is referred to as hourly electricity bill information.

  Such electricity rate information by time zone varies depending on the time zone and season, but other than that, it may be a different time zone and different rates for each contracted home. The fee information may be a different time zone and a different fee for each type of electrical equipment.

  Hereinafter, as for the electricity rate information by time zone, as described in the above example, 23:00 to 7 o'clock will be described as a time zone (night power zone) with a low power usage fee.

  There is an electric water heater as a typical example of the electric equipment that operates according to the time when the electricity usage fee is cheap, and it is heated up and stored at a time when the electricity usage fee is cheap, and the electricity usage fee is high like the daytime. Although hot water is consumed during the time period, there is an increasing number of cases where all-electric housing is used for electricity without using any gas.

  Moreover, recently, there are signs that electric vehicles and electric motorcycles are becoming popular due to technological innovation and accelerated oil prices. In many cases, it is necessary to charge on-board batteries at home, and electricity usage fees It is certain that there will be more and more things to drive or want to drive during the cheaper time zone.

  On the other hand, even in a time zone where the power usage fee is cheap, there is a contract for the upper limit of power usage in the home, and if this limit power (contract power or upper limit power) is exceeded, the breaker may fall. For example, if you concentrate too much of the above household appliances at 23: 00-7pm, when the electricity usage fee is cheap, the breaker will fall in the middle of the night, hot water is not boiling when you wake up in the morning, and the electric car moves due to insufficient charging There is no tragedy such as no rice is cooked in the rice cooker that has been reserved.

  As a conventional invention, when using both the operation of electrical equipment and the charging of an on-vehicle battery, the power consumption of the charging device is set so that the breaker does not fall beyond the contract power and allowable power in consideration of the power consumption of the entire house. Some are controlled so as to decrease (see, for example, Patent Document 1).

  Patent Document 1 describes an in-vehicle battery charging device that reduces a charging current to a home in-vehicle battery when a contract current is exceeded by using a microwave oven.

JP 2008-141924 A

  However, the conventional method uses a combination of an electric device that a user wants to use immediately, such as a microwave oven, and an electric device that can be rotated later, such as an in-vehicle battery charger, so the microwave oven is used with priority. This period can be solved by reducing the power used for charging the vehicle battery. The use time of cooking appliances as described above is relatively short (several minutes to no more than a few dozen minutes), so control that temporarily gives away the power used is a major side effect (for example, that hot water is not boiling This is possible without the electric vehicle not moving due to insufficient charging. However, when an electric water heater that continues to use electricity for a long time and an electric vehicle that has entered the home, the electric water heater must be heated up so that it does not compete with each other for electricity. Therefore, it is necessary to prevent the charging of the on-vehicle battery from overlapping in time.

  It goes without saying that it is most preferable to boil up the electric water heater and charge the on-board battery during a time when electricity usage is cheap, but in some cases it may be necessary to give priority to either one, If the power consumption of the other device is reduced, there is a risk that it will be very inconvenient. In other words, even when the required time zone is reached, the hot water in the electric water heater has not boiled up so that the hot water cannot be used, or the battery is not charged enough to reach the destination even if it is going out by car. is expected.

  Furthermore, in the case of an electric vehicle, since the mileage of the day can change significantly, fluctuations in the in-vehicle battery level at the start of charging are also a major factor.

  Of course, there is almost no problem when the amount of remaining battery in the vehicle is large, but if the mileage is extremely long and the remaining amount of battery in the vehicle is very small, the charging time will be longer or it will be necessary to charge more current than usual. It is noteworthy that power control is becoming very difficult due to the addition of such fluid factors. Especially when I went home with an electric car and tried to charge the in-vehicle battery, there was a situation where even if I charged the in-vehicle battery after the boiling time of the electric water heater ended, it could not be fully charged by the next morning. It is also necessary to notify the time of returning home in advance, and to raise the boiling start time of the electric water heater in accordance with the remaining amount of the in-vehicle battery and the time of returning home.

  In this way, in the invention of power control combined with a conventional short-time use electric device taking a microwave oven as an example, a combination of devices that use a large current for a long time such as an electric water heater and an electric vehicle is combined. Sometimes there are issues that cannot be solved.

  In order to solve the conventional problems, the power control system, the power control method, and the power control apparatus of the present invention provide information on the time required for charging and the time of returning home calculated from information on the remaining amount of the storage battery at all times or regularly. When it is determined that charging of the storage battery is not completed even if the end time of the second time zone is exceeded, the return time is changed while interrupting and restarting the boiling in the boiling means in advance. Correspondingly, energization control is performed so that boiling is completed by the time of returning home.

Since the present invention informs the electric water heater in advance of the remaining amount of the on-vehicle battery and the return time at the time of returning home, and raises the boiling start time of the electric water heater in accordance with the remaining amount of the on-vehicle battery. Even if the cheapest electricity bill time zone recorded in the means has passed, the hot water of the electric water heater has not boiled, or it has been boiling up even after returning home, so the charging start time for the in-vehicle battery is delayed To provide a power control system that can avoid remarkably inconvenience that it is difficult to start charging, the charging time is insufficient, the electric vehicle does not move even if it is used in the morning, or the electric vehicle cannot reach the destination. Is. Also, in the event that an unexpected traffic jam occurs and the return time is delayed, changing the return time while interrupting and resuming the heating so that the unused period of electricity in the second time zone does not occur as much as possible As the boiling period is adjusted so that boiling is completed by the return time, an electric power control system that provides economical and fine-tuned control corresponding to the return time that may vary is provided. can do.

The figure which shows an example of a structure of the power control system in Embodiment 1 of this invention. The figure which shows the charge information classified by time slot | zone in Embodiment 1 of this invention, power consumption, and the relationship (priority is given priority). The figure which shows the flow (a priority is given to convenience) of the process of the control determination means in Embodiment 1 of this invention. The figure which shows the charge information according to time slot | zone in Embodiment 1 of this invention, the power consumption, and the relationship (it balances convenience and economical efficiency) with time. The figure which shows the flow of a process of the control determination means in Embodiment 1 of this invention (both convenience and economical efficiency). The figure which shows the charge information according to time slot | zone in Embodiment 1 of this invention, power consumption, and the relationship (a priority is given to economical efficiency). The figure which shows the flow (a priority is given to economical efficiency) of the process of the control determination means in Embodiment 1 of this invention. The figure which shows the example of a display of the display means in Embodiment 1 of this invention.

A first invention is an electric vehicle, the present invention relates a power control system comprising a power control device for controlling the power supply to the electric water heater and controls the charging of the storage battery with the electric vehicle, electric vehicle, In-vehicle navigation that provides information on the distance to the home by acquiring information indicating the current position of the storage battery and the electric vehicle, and information on the return time, the remaining amount information of the storage battery, and the home from the in-vehicle navigation Obtained from the information related to the distance and the information related to the return time, the charge information detection means for calculating the remaining amount information related to the remaining amount of the storage battery at the time of return, the remaining amount information calculated by the charge information detection means, and the vehicle-mounted navigation A first communication means for transmitting information related to the return time, and the power control device receives a remaining amount information transmitted by the first communication means and information related to the return time. To the boiling means provided in the electric water heater based on the remaining charge information received by the communication means, the information on the return time, information on the return time, and the electricity bill system showing the electricity bill for each time zone Energization timing, charging timing for the storage battery, timing calculation means for calculating the charging timing of the storage battery, energization timing for the heating means calculated by the timing calculation means, and charging control for the heating means according to the charging timing for the storage battery and the storage battery Control means for performing charging control of the electric charge, and the timing calculation means is an electric charge corresponding to a second time zone in which the electric charge corresponding to the first time zone is different from the first time zone in the electric charge system. The charging timing for the storage battery is determined to be within the second time zone, and the charging to the storage battery is performed immediately after the end of the energization control for the heating means. The timing for energizing the boiling means is determined so as to be imming, and the timing calculating means performs the energization control for the boiling means at the timing for energizing the boiling means calculated by the timing calculating means. Later, when there is a change in the information regarding the return time received by the second communication means, the energization timing to the boiling means and the charging timing to the storage battery are recalculated, and the control determination means When the energization timing to the raising means is after the recalculation time, the energization control to the boiling means is interrupted.

  As a result, the in-vehicle battery remaining capacity and the return time at the time of returning to the home are informed to the electric water heater in advance, and the boiling start time of the electric water heater is increased according to the in-vehicle battery remaining capacity. Since the time to start charging the on-board battery was delayed, it was difficult to start charging, the charging time was insufficient, and the electric car did not move even when trying to use it in the morning, or It is an object of the present invention to provide a power control system capable of avoiding a significant inconvenience that a vehicle cannot reach a destination. In addition, when an unexpected traffic jam occurs and the return time is delayed, the return time is set while pausing and resuming the heating so that the unused period of electricity in the second time zone does not occur as much as possible. The boiling period is adjusted so that the boiling is completed by the return time in response to the change in time, so it is possible to perform economical and fine-tuned control corresponding to the return time that may vary. . If charging to the in-vehicle battery is completed by the end of the cheap electricity bill time zone (night power band), it is possible to resume boiling using the remaining night power band. If the battery is charged for a long time and does not complete beyond the nighttime zone, the additional boiling mentioned above cannot be performed during the nighttime power zone, and it is Resuming is considerably slower in time. Considering these points as a whole, it is important to complete boiling before returning home in advance, and it is possible to provide an electric power control system that performs economical and fine-tuned control.

  According to a second aspect of the invention, particularly in the first aspect of the invention, a display means for displaying a plurality of modes related to energization control for the boiling means provided in the electric water heater, and an arbitrary one of the plurality of modes displayed on the display means A plurality of modes displayed by the display means, at least: (1) start boiling by the boiling means before the second time zone, and to the storage battery beyond the second time zone Convenience priority mode to continue charging until full charge, (2) Shorten the boiling period by the boiling means, start boiling in the second time zone, and to the storage battery beyond the second time zone Convenience / Economic Compatibility Mode that Continues Charging until Full Charging, and (3) Shorten the boiling period by the boiling means, start boiling in the second time zone, and with the end of the second time zone Charging the storage battery In the power control system corresponding to the economic priority mode to be interrupted, especially for (2) and (3), when the return time is delayed, the delayed return time is reached or the electric water heater It was made possible to continue boiling up to the full capacity.

  In this way, the electric water heater is informed in advance of the remaining amount of the on-board battery and the time when the user goes home, and the electric water heater is raised according to the priority of convenience and economy selected by the user. Since the start time is increased, boiling is interrupted, charging of the in-vehicle battery is started or interrupted, it is possible to provide a power control system that performs fine control. In addition, when the return time is delayed, it is possible to reach the delayed return time or to continue boiling up to the full capacity of the electric water heater, so that the entire amount of hot water can be boiled economically. This also increases user convenience.

  In the third invention, in particular, in the first or second invention, when the return time is reached during boiling by the boiling means, the boiling is interrupted and charging of the storage battery is started.

  This gives priority to the charging of the on-board battery, which is more important than the amount of hot water that does not cause a life-threatening situation even if it is short, and for example, in the event of an emergency, use an electric vehicle. Since it is in a state where it can be used as much as possible, convenience for the user can be achieved.

In the fourth invention, particularly in the first or second invention, when the charging plug is connected to the power supply means during the boiling by the boiling means, the boiling is interrupted and charging of the storage battery is started. I did it.

  This gives priority to charging the on-board battery over the amount of hot water that does not cause a life-threatening situation even if it is insufficient, so that the use of electric vehicles can be used as much as possible even in the event of an emergency. It was designed to be convenient for the user.

5th invention is related with the electric power control apparatus which controls the charge to the storage battery which an electric vehicle has, and controls the electric power supply to an electric water heater, and the residual amount information regarding the residual amount of the storage battery at the time of return of an electric vehicle If, based on a communication means for receiving the information about the return home time of the electric vehicle, the remaining amount information received by the communication means, information about time to return home, the electric charge system shown electricity price for each time period In addition, the energization timing to the boiling means provided in the electric water heater, the timing calculation means for calculating the charging timing to the storage battery, the energization timing to the boiling means calculated by the timing calculation means, and the charging timing to the storage battery Control means for performing energization control to the boiling means and charging control to the storage battery in accordance with When the electricity charge corresponding to is higher than the electricity charge corresponding to the second time zone different from the first time zone, the charging timing to the storage battery is determined to be within the second time zone, and then to the boiling means The energization timing to the boiling means is determined so that the storage battery charging timing is immediately after the energization control end timing, and the timing calculation means is the energization timing to the boiling means calculated by the control determination means by the timing calculation means If there is a change in the information regarding the return time received by the second communication means after controlling the energization to the boiling means, the timing for energizing the boiling means and the charging timing for the storage battery are recalculated. If the energization timing for the heating means by recalculation is later than the time when the recalculation is performed, the control determining means passes the control to the boiling means. It is intended to interrupt the control.

A sixth invention relates to a power control method for controlling the power supply to the electric water heater and controls the charging of the storage battery with the electric vehicle, the remaining about the remaining amount of the battery at the return home time of the electric vehicle based information and, in a receiving step of receiving the information about the return home time of the electric vehicle, and information about the remaining amount information and the time to return home received in the receiving step, the electric charge system power rate has been shown in each time period The timing calculation step for calculating the energization timing of the boiling means provided in the electric water heater and the charging timing of the storage battery, the energization timing of the boiling means, and the charging timing of the storage battery according to the charging timing of the storage battery This is a power control method for performing energization control and a control step for controlling charging of the storage battery. When the electricity rate corresponding to the first time zone is higher than the electricity rate corresponding to the second time zone different from the first time zone, the charging timing to the storage battery is determined to be within the second time zone. The energization timing is determined so that the storage battery is charged immediately after the energization control end timing of the boiling means, and in the timing calculation step, the heating means is determined by the energization timing to the boiling means calculated in the timing calculation step. If there is a change in the information about the time to go home after conducting the energization control, the energization timing to the boiling means and the charging timing to the storage battery are recalculated. When the energization timing is after the recalculation time, the energization control to the boiling means is interrupted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a diagram showing an example of the configuration of the power control system according to Embodiment 1 of the present invention, and will be described below with reference to FIG.

  The electric vehicle 2 includes an in-vehicle battery 23 for operating a driving motor and in-vehicle electrical components, and charges the in-vehicle battery 23 from the power supply means 13 (described later) via a charging plug 24. The in-vehicle navigation 25 has a function of acquiring current electric vehicle position information and providing information on the distance to the home and information on the return time (expected time expected to be returned). The charging information detecting means 22 acquires charging information including the remaining amount of the in-vehicle battery 23, calculates the battery consumption consumed before returning home from the information about the distance to the home acquired from the in-vehicle navigation 25, Information on the remaining amount of the in-vehicle battery at the time of returning home is calculated and transmitted from the first communication means 21 at all times, at any time, or at regular intervals.

  The communication path in this case is assumed to be a mobile communication network such as a mobile phone, PHS, WiFi, WiMax, etc., and finally the second communication means 14 provided in the electric water heater 1 installed in the house. Is received by the control determination means 11.

  There are several ways to calculate the amount of battery consumed before returning home. One is to pre-register the average consumption per kilometer specific to the electric vehicle in the charging information detection means 22. There is a method of calculating by multiplying the consumption amount and the distance to the home. Another possible method is to calculate the amount of consumption per kilometer from the driving situation of the day and multiply by the distance to the home as described above. The in-vehicle navigation system is equipped with a receiving device called a broadcast radio wave receiver and a beacon, which further increases the expected accuracy of the battery that will be consumed up to home, taking into account traffic information expected before returning home. It can be improved, and further effects can be expected. The same applies to the return time, and it can be calculated by adding the time calculated from the distance to the home and the average speed to the current time. As mentioned above, the prediction accuracy of the return time is further improved by taking into account the traffic jam elimination method. It is also possible to expect further effects as well. However, unexpected traffic jams due to sudden accidents can actually occur, but it is routinely expected that such a situation will cause the return time to be significantly behind the original schedule, such as It is desirable to control the system flexibly in response to any situation.

  The control determination means 11 plays a central role in this power control system, and performs data calculation, determination, and control of various means. Specifically, the time is read from the clock unit 12 and the boiling unit 10 is instructed to boil up or after the boiling end (stop, stop) is instructed, the power supply unit 13 and the charging plug 24 are connected. Via, the vehicle-mounted battery 23 is charged and controlled. Furthermore, the control determination means 11 calculates the time required for charging according to the remaining amount of the in-vehicle battery 23, or calculates the time required for boiling water in the electric water heater 1 (boiling time). The amount of hot water that can be boiled per certain time is calculated, and the electricity bill required for it is calculated. In addition, the hourly electricity rate information is stored inside the control determination means 11 so that the time required for boiling by the boiling means 10 and the charging time for the in-vehicle battery 23 are efficiently performed. Control. The efficiency mentioned here is not only to make the electricity price cheapest based on the hourly electricity price information, but also to consider the user's intent regarding energy saving and to make the convenience more efficient than the electricity price. It also includes pursuing. Further, when the charging plug 24 is connected to the power supply unit 13, the control determination unit 11 detects this and reflects it in the control (for example, interrupting boiling and preferentially charging the battery). It also has a function.

  In addition, since the process of the control determination means 11 is complicated, priority is given to the following three modes (a convenience priority mode that prioritizes convenience, a convenience / economy compatible mode that balances convenience and economy, and economy). The economic priority mode will be described in order with reference to FIGS.

[About convenience priority mode]
First, the case where priority is given to convenience will be described with reference to FIGS.

  FIG. 2 is a diagram showing the relationship between hourly fee information, power consumption, and time (priority is given priority) in the first embodiment of the present invention, and the hourly fee information and the heating period at this time And the relationship between the on-vehicle battery charging period and time.

  In FIG. 2, the electricity rate information by time zone is shown at the top, and the normal rate is 23 yen / KW until a certain time (for example, 23:00), but after a certain time (for example, 23:00) Indicates a low price (9 nights / KW) as a low charge (night charge), and it will return to the normal charge of 23 yen / KW at a certain time (for example, the next morning at 7:00). . Therefore, how to use this cheap electricity rate zone (night rate zone) effectively, without gaps, or by limiting the use of electricity only during this time zone, it is possible to use economically while saving electricity costs. It becomes.

  Here, the case where priority is given to the convenience is described. In the figure, it is more convenient than economic efficiency, considering that the electric water heater 1 can be heated up by starting the boiling start from the normal charge zone. It turns out that priority is given to sex. When it is time for the electric vehicle 2 to come home, the heating of the vehicle-mounted battery 23 is started at the same time as the heating is completed. This charging is terminated after the night charge zone is exceeded and the normal charge zone is reached. Here, it can be seen that convenience is also given priority as described above. In the figure, the limit power is shown, but this is the contract power with the power company or the power value of breaker cut-off, and here, boiling and charging cannot be performed simultaneously (breaker is activated) ). In this way, while giving priority to convenience, use a cheap electricity rate band (night power band) as much as possible, or when it is time to charge the in-vehicle battery 23 (home time) As soon as possible, the on-board battery charging is completed as soon as possible, so it can be seen that boiling and charging are performed without waste (first in FIG. 2). Pattern above).

  However, if you receive a notification that the return time will be delayed when you are heating up in a time zone other than the cheap electricity rate zone (night power range) according to the time you have received the return home, continue heating up Then, since the electric vehicle 2 has not come home when the boiling is finished, there is a situation in which the electric vehicle is not used even though it is cheap and the electric vehicle 2 is not used. Expected (middle pattern in FIG. 2). In this case, an unused period of electricity (electricity) is generated in the cheap electricity rate zone (night power range) from the end of boiling to the start of charging the vehicle battery (home time), which is economically useless. It becomes usage.

  In this case, when you receive a notification that the return time will be delayed, you should stop boiling once and readjust it according to the return time (after change). As a result, it is possible to eliminate the unused period of the cheap electricity rate band (night power band) (the bottom pattern in FIG. 2). In this way, the entire amount of boiling is secured while charging the vehicle-mounted battery 23 as soon as possible after returning home, while ensuring economical efficiency by making effective use of the cheap electricity rate band (night power band). It is possible to carry out until full charge.

  FIG. 3 is a diagram showing a flow of processing of the control determination unit (first priority is given to convenience) in the first embodiment of the present invention, and shows a flow of processing when switching from boiling to charging of the in-vehicle battery 23. Show. Since all the operations below are performed by the control determination unit 11, expressions such as those performed by the control determination unit 11 are omitted.

  In FIG. 3, first, the time required for boiling the electric water heater 1 (boiling time) is calculated (step 1000), and information about the time when the electric vehicle 2 is going home via the second communication means 14 (home time). Is received (step 1100), and the boiling time is subtracted from the return time to calculate the time to start boiling (step 1200).

  Next, it waits until the boiling start time (step 1300), and when that time is reached, boiling is started (step 1400).

  Even when the electric vehicle 2 is being boiled up, the return time of the electric vehicle 2 is acquired (step 1500), and whether or not the information indicating that the return time is delayed is monitored (step 1600). Compared with the time acquired from the clock means 12 (step 1700), the boiling is finished when it is time to go home. When the boiling is finished, the required amount of boiling (total capacity) ) Is boiled.

  As long as the return time is not later than the original schedule, the electric vehicle 2 has already returned home at the return time, so charging the in-vehicle battery 23 (via the charging plug 24 to the power supply means 13). Start (step 1700). When the charging of the in-vehicle battery 23 is completed, the charging is terminated and a series of processes is completed. At this time, the vehicle has already entered the normal electricity bill, but the in-vehicle battery 23 has been fully charged, that is, has reached a charging rate of 100%, giving priority to convenience.

  However, when the return time is later (than the original schedule), the boiling is temporarily interrupted (step 1650), and the process starts again from step 1200. The boiling start time (in this case, in accordance with the delayed return time) Is calculated (step 1200). At that time, boiling starts (restarts in this case) (step 1400).

  By controlling in this way, the heating time in the normal electricity rate zone is shortened as much as possible, the heating time in the cheap electricity rate zone (night power range) is increased as much as possible, and the return time, that is, the vehicle battery Thus, the unused period of the cheap electricity rate band (night power band) until the start of charging to 23 will be eliminated.

  Even when the return time is later than the initial schedule, the same operation is performed, so that the heating control according to the latest return time and the charging of the in-vehicle battery 23 are performed appropriately and economically.

  However, even if you receive a notification of a delay in returning home while boiling in a cheap electricity rate band (night power band), you may be able to perform the operation of suspending and resuming as described above. From the viewpoint of convenience, it may be preferable to continue boiling without interruption. In other words, traffic congestion is smoother than expected, and once it is late, the planned return time may have become faster, so if you continue boiling, the whole amount will rise This is because there is a possibility of avoiding situations such as returning home.

[Convenience / Economic Compatibility Mode]
Next, a case where both convenience and economy are achieved will be described with reference to FIGS. FIG. 4 is a diagram showing the relationship between time zone fee information, power consumption, and time (both convenience and economy) in the first embodiment of the present invention. The relationship between a boiling period, a vehicle-mounted battery charging period, and time is shown.

  Also in FIG. 4, the electricity charge information by time zone is shown at the top, but since the content is the same as described above, the description is omitted here. In FIG. 4, since the start of boiling is performed after the cheap electricity rate band (night power band), the electric water heater 1 cannot be heated up as a result, and the capacity is reduced. Only the amount of hot water that has been made can spring up. Instead, it turns out that economics is given priority over convenience for boiling. When it is time for the electric vehicle 2 to go home, the same operation as when priority is given to the above-described convenience is performed, and thus the description thereof is omitted here. As a result, while giving priority to economics for boiling and convenience for in-vehicle batteries, a cheaper electric charge zone (night power band) can be used without any gaps, or the in-vehicle battery 23 can be charged (time It can be seen that charging is started as soon as possible when it comes to (home time), and that boiling and charging are performed reliably and without waste (the top pattern in FIG. 3).

  The above is about the case where there was no change in the scheduled return time, but if the return time is delayed, the heating is finished, but the electric vehicle 2 returns even if the return time is reached. It is expected that the in-vehicle battery 23 will not be able to be recharged, and will continue to wait without doing anything until the return home time. Will occur, and it will be an economically useless pattern (the middle pattern in FIG. 2). Therefore, in such a case, it is possible to continue boiling until the home time reaches the full capacity or is changed and slowed down without ending the boiling even when the initial return time is reached, It can be expected that the user's inconvenience associated with the reduced capacity will be solved even a little (the bottom pattern in FIG. 3).

As a matter of course, it is not always desirable because it will cause unused periods of cheap electricity tariffs (nighttime power bands), but boiling up will be terminated at the originally scheduled time of return and emphasizing economy. It is also possible to make a selection.
In this way, charging the in-vehicle battery 23 as much as possible after returning home while securing the boiling amount as much as possible while effectively utilizing the cheap electricity rate band (night power band) It becomes possible to carry out promptly and up to full charge.

  FIG. 5 is a diagram showing a flow of processing of the control determination means (both convenience and economy) in the first embodiment of the present invention, and processing when switching from boiling to charging of the in-vehicle battery The flow is shown. Except for a part of the processing, the flow is the same as the flow when priority is given to the convenience described above, so only the different portions will be described mainly.

  The process up to the point where the boiling start time is calculated (step 1000 to step 1200) is the same as described above, but even if the calculated boiling start time is reached, the night charge zone is entered without waiting. (Step 2300) is a different point. In addition, when the return time is later (than the initial schedule) (step 1600), the heating end time is reset to the changed return time (step 2650) and boiled until the return time is reached. The heating is continued or the boiling is continued until the whole amount is boiled (step 2700). If the return home time is reached before the total amount is boiled, more hot water can be boiled than the amount of water originally planned, although it is reduced. In addition, when the whole amount is boiled, an unused period is generated from the end of the boiling to the return time (charging start time for the in-vehicle battery 23), but it can be expected to reduce the blank period as much as possible.

Although not shown in the figure, the amount of hot water to be reduced is calculated by the control determination means 11, the result is displayed on the display means 15, and the selection is made after informing the user to that effect. I'm doing something like that. When the user wishes to boil the entire capacity, he / she inputs that fact from the display means 15 and does not control the convenience and economy at the same time, but gives priority to convenience (FIGS. 2 and 3). The control can be switched to the control described in the above, and the user can select the response according to the user's preference, the use situation of the day, the environment, or the like. Of course, no matter which one is selected, it is possible to use a cheap electricity price band (night power band) as much as possible, or when the vehicle battery 23 can be charged (time to go home). It is the same in that it is started quickly and without waste, and is reliably heated up and charged.
[Economic priority mode]
The case where priority is given to economy will be described with reference to FIGS. FIG. 6 is a diagram showing the relationship between time zone fee information, power consumption, and time (economic priority is given) in the first embodiment of the present invention, and the time zone fee information and the heating period at this time And the relationship between the on-vehicle battery charging period and time.

  Also in FIG. 6, the electricity charge information by time zone is shown at the top, but since the content is the same as described above, the description is omitted here. In addition, as in the case where both the above-described convenience and economy are made compatible, in FIG. 6, as in the above description, the start of boiling is performed after a low electricity rate band (night power band) is started. Therefore, as a result, the electric water heater 1 cannot boil up the total amount that can be boiled, and instead of raising only a reduced amount of hot water, it is more economical than convenience for boiling. It can be seen that is prioritized.

  In FIG. 7 as well, the operation until the start of charging of the in-vehicle battery 23 is the same as that described so far, but the charging end time for the in-vehicle battery 23 is different from that described so far. That is, it is understood that priority is given to economy over convenience by terminating the process when the night time zone is exceeded (step 3700). Naturally, since the charging of the in-vehicle battery 23 is terminated halfway, the charging cannot be performed fully, and the charging amount can be charged only, for example, about 70%. Of course, in this case, the distance that the electric vehicle 2 can travel is reduced, but this is not a problem because it is a result of the user's selection according to the user's situation. It may be possible to correct the end time.

  Here, similarly, the amount of hot water to be reduced is calculated by the control determination means 11, the result is displayed on the display means 15, and the selection is made after informing the user to that effect. I do something like that. When the user wishes to boil up the entire capacity, he / she inputs that fact from the display means 15 and does not control the convenience and economy at the same time, but gives priority to convenience (FIGS. 2 and 3). It is possible to switch to the control described above, and respond according to the user's preference or situation. Further, here, the control determination means 11 calculates that the amount of charge that could not be fully charged is 70%, for example, and displays the result on the display means 15 to inform the user to that effect. After that, what kind of selection is made. When the user wishes to fully charge the battery, he / she inputs that fact from the display means 15 to control both convenience and economy (the control described in FIGS. 4 and 5), or the above-mentioned Depending on the change state of the amount of boiling, it is possible to switch to control giving priority to convenience (the control described with reference to FIGS. 2 and 3), which corresponds to the user's preference or situation. Similarly, no matter which one is selected, it is possible to use a cheap electricity rate band (night power band) without any gaps or when the vehicle battery 23 can be charged (home time). It is started as quickly as possible, and it is boiled and charged reliably without waste.

[About mode selection]
The above three modes (a convenience priority mode, a convenience economy compatible mode, and an economy priority mode) can be determined in advance by the user via the mode selection means 16. In this case, the mode selection means 16 may be an input device such as a mouse or a trackball.

  FIG. 8 shows an example of a screen displayed on the display means 15 when the user selects a mode. The arrow in the figure means a mouse cursor as an example, and the user can select the mode while moving it with the mouse. It is possible to select a mode. In recent years, the display unit 15 and the mode selection unit 16 are configured together like a touch panel. In the present embodiment, the display unit 15 and the mode selection unit 16 are integrated and operated with a fingertip. Any configuration may be used.

  In the description so far, the user has been selected to select three cases (when convenience is given priority, both convenience and economics are given priority, and economics are given priority). As for the increase, it is also possible to perform the finer control by instructing the amount of hot water or the ratio (%) with respect to the total amount, and the charge to the in-vehicle battery 23 is also the ratio to the full charge ( %), Or by specifying the distance that can be traveled, etc., and it is possible to finely control convenience, economy, or a balance between them, and excellent power according to the user's situation It can be expected to provide a control system.

  Furthermore, in addition to the control described so far, in order to calculate the distance traveled on the next day (or the amount of charge corresponding thereto), the entire travel plan for the next day is entered in advance in the in-vehicle navigation system. It is also possible that the amount of charge to the in-vehicle battery is determined from the information and the information on the remaining amount of the in-vehicle battery at the time of departure, and then the charging time to the in-vehicle battery and the boiling time of the electric water heater It is possible to adjust.

  Also, at the time of departure from that day, the routing information to the destination and the routing information from the destination to the home are stored in the in-vehicle navigation system, and the in-vehicle battery charge amount that will be consumed on that day is estimated. It is also conceivable to adjust the charging time for the on-vehicle battery and the boiling time of the electric water heater.

  Furthermore, in the above description, the electric power competition between the electric water heater 1 and the in-vehicle battery 23 has been taken up. However, the present invention is not limited to this, and it is possible to operate in the cheapest time zone described in the electricity rate information by time zone. The same effect can be obtained by controlling power competition with other devices (such as a washing / drying machine and a dishwasher) in the same manner.

  In addition, it is preferable to constantly or periodically communicate information regarding the remaining amount of the in-vehicle battery 23 that changes every moment while the electric vehicle 2 is traveling. There is no problem, and communication may be performed when the electric vehicle starts (when it gets on) or when it ends (when it gets off).

  Moreover, although described with the electric water heater in the description so far, the electric water heater which boils only using electric heat may be sufficient.

  As described above, according to the present invention, it is possible to perform power control in consideration of convenience and economy, and it is useful as a power control system, a power control method, and a power control apparatus that control power supply to an electrical device.

DESCRIPTION OF SYMBOLS 1 Electric water heater 2 Electric vehicle 10 Boiling means 11 Control determination means 12 Clock means 13 Power supply means 14 Second communication means 15 Display means 21 First communication means 22 Charging information detection means 23 Car battery 24 Charging plug 25 Car navigation

Claims (6)

An electric vehicle, a power control system and a power control device for controlling the power supply to the electric water heater and controls the charging of the accumulator with said electric vehicle,
The electric vehicle is
The storage battery;
In-vehicle navigation that obtains information indicating the current position of the electric vehicle and provides information about the distance to the home and information about the time to go home;
Charge information detection means for calculating remaining amount information on the remaining amount of the storage battery at the time of returning from the information on the remaining amount information of the storage battery, information on the distance to the home obtained from the in-vehicle navigation and information on the return time,
A first communication means for transmitting the remaining amount information calculated by the charging information detection means and information on the return time obtained from the in-vehicle navigation;
The power control device
Second communication means for receiving the remaining amount information transmitted by the first communication means and information relating to the return time;
Based on the remaining amount information received by the second communication means, the information on the time to go home, and the electricity bill system indicating the electricity bill for each time zone, the heating means provided in the electric water heater Energization timing, timing calculating means for calculating charging timing to the storage battery,
Control means for performing energization timing to the boiling means calculated by the timing calculation means, energization control to the boiling means and charging control to the storage battery according to the charging timing to the storage battery,
The timing calculation means, when the electricity charge corresponding to the first time zone is higher than the electricity charge corresponding to the second time zone different from the first time zone in the electricity billing system, to the storage battery. The charging timing is determined to be within the second time zone, and the energization timing to the heating means is determined to be the charging timing to the storage battery immediately after the energization control end timing to the boiling means,
The timing calculation means receives the second communication means after the control determination means performs energization control to the boiling means at the energization timing to the boiling means calculated by the timing calculation means. If there is a change in the information about the time to go home, recalculate the energization timing to the boiling means and the charging timing to the storage battery,
When the energization timing to the boiling means by the recalculation is later than the time when the recalculation is performed, the control determination means interrupts the energization control to the boiling means.
Power control system. Display means for displaying a plurality of modes relating to energization control to the boiling means provided in the electric water heater;
Selection means for selecting an arbitrary mode from the plurality of modes displayed on the display means, and the plurality of modes displayed by the display means are at least:
(1) Convenience priority mode that starts boiling by the boiling means before the second time zone and continues charging until the storage battery is fully charged beyond the second time zone;
(2) Convenience in which the boiling period by the boiling means is shortened, boiling is started in the second time period, and charging to the storage battery is fully charged beyond the second time period. Economic compatibility mode,
(3) In the economic priority mode in which the boiling period by the boiling means is shortened, the boiling is started in the second time zone, and the charging of the storage battery is interrupted with the end of the second time zone. There,
Regarding (2) and (3), when the return time is delayed, the delayed return time is reached, or the boiling is continued to the full capacity that the electric water heater allows. The power control system according to claim 1, which is enabled. 3. The power control system according to claim 1, wherein, when the return time is reached during boiling by the boiling means, boiling is interrupted and charging of the storage battery is started. 3. The power control system according to claim 1, wherein when the charging plug is connected to the power supply unit while the boiling unit is boiling, the heating is interrupted and charging of the storage battery is started. A power control device that controls charging to a storage battery of an electric vehicle and controls power supply to an electric water heater,
And remaining amount information about the remaining amount of the battery at the return home time of the electric vehicle, and a communication means for receiving the information about the return home time of the electric vehicle,
Based on the remaining amount information received by the communication means, the information about the time to go home, and the electricity bill system showing the electricity bill for each time zone, the energization timing to the boiling means provided in the electric water heater, Timing calculating means for calculating the charging timing to the storage battery;
Control means for performing energization timing to the boiling means calculated by the timing calculation means, energization control to the boiling means and charging control to the storage battery according to the charging timing to the storage battery,
The timing calculation means, when the electricity charge corresponding to the first time zone is higher than the electricity charge corresponding to the second time zone different from the first time zone in the electricity billing system, to the storage battery. The charging timing is determined to be within the second time zone, and the energization timing to the heating means is determined to be the charging timing to the storage battery immediately after the energization control end timing to the boiling means,
The timing calculation means receives the second communication means after the control determination means performs energization control to the boiling means at the energization timing to the boiling means calculated by the timing calculation means. If there is a change in the information about the time to go home, recalculate the energization timing to the boiling means and the charging timing to the storage battery,
When the energization timing to the boiling means by the recalculation is later than the time when the recalculation is performed, the control determination means interrupts the energization control to the boiling means.
Power control device. A power control method for controlling a power supply to the electric water heater and controls the charging of the storage battery with the electric vehicle,
And remaining amount information about the remaining amount of the battery at the return home time of the electric vehicle, a receiving step of receiving the information about the return home time of the electric vehicle,
Based on the remaining amount information received in the receiving step and the information on the return time, and the electricity bill system in which the electricity bill for each time zone is shown, the energization timing to the boiling means provided in the electric water heater, A timing calculation step of calculating a charge timing to the storage battery;
An electric power control method for performing an energization timing to the boiling means and a control step of performing energization control to the boiling means and charging control to the storage battery according to the charging timing to the storage battery,
In the timing calculation step, when the electricity rate corresponding to the first time zone is higher than the electricity rate corresponding to the second time zone different from the first time zone in the electricity billing system, The charging timing is determined to be within the second time zone, the energization timing is determined to be the charging timing to the storage battery immediately after the energization control end timing to the boiling means,
In the timing calculation step, after the energization control to the boiling means is performed at the energization timing to the boiling means calculated in the timing calculation step, if there is a change in the information regarding the return time, the boiling Recalculate the energization timing to the raising means and the charging timing to the storage battery,
In the control step, when the energization timing to the boiling means by recalculation is later than the time when the recalculation is performed, the energization control to the boiling means is interrupted.
Power control method.

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