JP2016063561A - Power control system and power control unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform discharge control of a secondary battery by taking account of a time zone when electric energy used by users is large and a time zone when electric power charge is high without forcing users to change their life patterns.SOLUTION: A discharge time zone setting part 86 sets a discharge time zone of each day of the week on the basis of a variation pattern of electric energy, electric power charge data, vehicle presence probabilities, and a battery remaining amount of a secondary battery 61 capable of discharging. A discharge control part 87 transmits a discharge start instruction to a vehicle 6 when a vehicle is present when the current time becomes a discharge time zone, and transmits a discharge stop instruction when the discharge time zone is passed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power control system and a power control apparatus.

The demand for electric power supplied by electric power companies is high during the daytime and low at night. Electricity rates are also set high during the daytime hours and cheap at nighttime.
By the way, in recent years, storage battery-equipped vehicles such as electric vehicles and chargeable / dischargeable hybrid vehicles have become widespread, and it is considered to discharge the storage battery (secondary battery) of the vehicle to household power supply equipment (Patent Literature). 1). The technique disclosed in Patent Document 1 is a technique in which the remaining amount of the secondary battery is detected and discharged in a discharge time corresponding to the remaining amount.

JP 2012-151948 A

  However, in the technique disclosed in Patent Document 1, discharge is performed in accordance with the remaining amount of the secondary battery between the time when the vehicle returns to the home (generally in the evening) and before the time when the power charge is reduced (night). In order to make a plan, the discharge control is not performed from the morning to the afternoon even if the vehicle exists at home. Therefore, the user has to intentionally use electric devices (home electric devices) in a concentrated manner in a short time zone from evening to night. That is, there is a problem that the lifestyle pattern must be changed. Moreover, since the discharge time zone is limited in the above technique, the discharge is not necessarily performed with priority given to the time zone when the power charge is high, and the power charge borne by the user is not effectively reduced.

  Therefore, the present invention makes it possible to perform discharge control of the secondary battery in consideration of a time zone in which the amount of power used by the user is large and a time zone in which the power charge is high without forcing the user to change the life pattern. An object is to provide a power control system and a power control apparatus.

  This application is made paying attention to the following points. That is, since the lifestyle patterns are different for each user in the household, the power consumption change pattern is also different. In addition, the existence time zone of the vehicle (secondary battery-equipped vehicle) on each day is different for each user. And the battery remaining amount in the secondary battery of a vehicle also differs. Therefore, in the power control system according to claim 1 of the present application, by using the power consumption change pattern predicting unit, the change pattern of the daily power consumption of each day of the week is predicted, so that each user's usage status on each day of the week, that is, Life patterns can be predicted.

  And in the power control system of claim 1 of the present application, the discharge time zone setting means includes a change pattern of the used power amount predicted by the used power amount change pattern predicting means, the power charge data acquired by the power charge data acquiring means, The user sets the discharge time zone for each day of the week based on the vehicle existence probability calculated by the vehicle existence probability calculation means and the dischargeable battery remaining amount of the secondary battery calculated by the dischargeable battery remaining amount calculation means. The discharge time zone can be set in accordance with the daily life pattern, taking into consideration the power rate, the presence or absence of the vehicle, and the remaining battery level of the secondary battery.

  If the determination result of the vehicle presence determination means is that the vehicle is present when the current time falls within the set discharge time zone, the discharge control means transmits a discharge start command to the vehicle, and the discharge time zone If lapses, a discharge stop command is transmitted. The discharge execution means of the vehicle that has received the discharge start command discharges the secondary battery in the discharge time zone, and therefore can discharge in accordance with the user's life pattern and taking into account the power charge.

  In the power control system according to claim 2, the discharge control means acquires the remaining battery level by the remaining battery level detection means during the discharge of the secondary battery, and discharges when the remaining battery level becomes the minimum required battery level. Send a stop command to the vehicle. According to this, it is possible to reliably prevent the remaining battery level of the secondary battery of the vehicle from becoming the minimum required battery level.

  In the power control system according to claim 3, the discharge time zone setting means is weighted for each predetermined time period according to the power consumption predicted by the power consumption change pattern prediction means and the power charge indicated by the power charge data. And the vehicle presence probability, the priority for discharge is set for each predetermined time period from the multiplication result, and the power consumption corresponding to the priority is sequentially integrated from the higher priority, Since the priority time zone until the integrated value becomes the remaining battery level that can be discharged is set as the discharge time zone, it can be set as the discharge time zone in order from the time zone in which the discharge is effective, and The discharge time zone can be set within the range of the remaining battery capacity.

Here, if the vehicle does not exist when the discharge time zone is reached, it becomes impossible to discharge in the initially set discharge time zone.
Therefore, in the power control system according to the fourth aspect, when the current time is the discharge time zone set by the discharge time zone setting means, and the determination result of the vehicle presence determination means is that there is no vehicle, the discharge time The band setting means resets the discharge time zone for the next time zone after the current discharge time zone. According to this, when the vehicle does not exist when the discharge time zone is reached, the discharge time zone is reset every time and the discharge control is retried. If is returned, discharge control can be performed.

  Further, in the power control system according to claim 5, when the current time is the discharge time zone set by the discharge time zone setting means, and the determination result of the vehicle presence determination means is that there is no vehicle, the discharge time Thereafter, the belt setting unit waits until the vehicle presence determination unit determines that the vehicle is present, and when the vehicle presence determination result is indicated, discharge is performed for time zones after the current time zone. The time zone was reset.

According to this, when the vehicle is absent in the first discharge time zone, the discharge time zone is reset by waiting until the vehicle is present. The discharge time zone can be reset, and immediately after the reset of the discharge time zone, it is possible to shift to discharge control.
Note that the power control apparatus according to claims 6 to 10 basically exhibits the same effects as the power control system according to claims 1 to 5 described above.

The block diagram of the functional structure of the power control system by 1st Embodiment of this invention. (A) is a figure which shows the value of the used electric energy of each time slot | zone in a reference | standard pattern, (b) is a figure which shows the mode of a change of used electric energy. (A) is a figure which shows the value of the used electric energy of each time slot | zone in the data acquired today, (b) is a figure which shows the mode of a change of used electric energy. (A)-(c) is a figure which shows a different grouping example, respectively. (A) shows vehicle presence / absence data, and (b) shows vehicle presence probability data. Flow chart showing control contents of discharge time zone setting Diagram showing predicted power usage, power rate weighting parameters, expected values, and priorities for each time period (A) is the figure which shows the estimated electric energy used for every time slot | zone, the parameter of electric power weighting, and the set discharge time slot | zone, (b) is a figure which shows the change of a vehicle presence probability. The figure which shows the control contents of the main control section The figure which shows the electric power consumption estimated for every time zone at the time of discharge time zone reset, the parameter of electric power weighting, an expected value, and a priority (A) is the figure which shows the estimated electric energy used for every time slot | zone at the time of discharge time zone reset, the parameter of electric power weighting, and the set discharge time zone, (b) shows the change of vehicle presence probability. Figure The flowchart which shows the control content of the main control part by 2nd Embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, the power control system 1 supplies power supplied from the power system 2 to an electrical device 4 such as a household electrical appliance that is a discharge target via the power supply unit 3. For example, the power supply unit 3 performs discharging from the vehicle 6 on which the secondary battery 61 is mounted to the electric device 4 and charging to the secondary battery 61 via the charging / discharging connector 5.

  The vehicle 6 includes a main control unit communication unit 62 and a vehicle control unit 63. The communication unit for main control unit 62 communicates wirelessly with the communication unit for vehicle 12 described later. The vehicle control unit 63 is mainly configured by a microcomputer, and includes a discharge execution unit 64 corresponding to a discharge execution unit and a battery remaining amount detection unit 65 corresponding to a battery remaining amount detection unit by software configuration. . Further, the vehicle 6 is provided with own vehicle position detection means (not shown).

When receiving a discharge start command from the power control device 7, the discharge execution unit 62 discharges the electric device 4 to be discharged from the secondary battery 61, and stops discharging when receiving a discharge stop command. The remaining battery level detection unit 65 detects the remaining battery level of the secondary battery 61.
The power control device 7 is provided at home, for example. The power control device 7 includes a main control unit 8, a used power amount measuring unit 9 as a used power amount measuring unit, a storage unit 10 as a storing unit, a clock unit 11, and an in-vehicle communication unit 12. Has been.

  The main control unit 8 is mainly composed of a microcomputer, and by a software configuration, a power consumption change pattern prediction unit 81 corresponding to a power consumption change pattern prediction unit and power rate data corresponding to a power rate data acquisition unit. An acquisition unit 82, a vehicle presence determination unit 83 corresponding to a vehicle presence determination unit, a vehicle presence probability calculation unit 84 corresponding to a vehicle presence probability calculation unit, a discharge battery remaining amount calculation unit 85 corresponding to a discharge battery remaining amount calculation unit, a discharge A discharge time zone setting unit 86 corresponding to the time zone setting unit and a discharge control unit 87 corresponding to the discharge control unit are provided.

The power consumption measuring unit 9 measures the amount of power used in the home.
The storage unit 10 is composed of, for example, a non-volatile memory, and stores the acquired power consumption, reference pattern, individual pattern, and the like according to a command from the main control unit 8.
The clock unit 11 is composed of, for example, a real-time clock, has a clock function and a calendar function, and gives clock information and calendar information to the main control unit 8.
The vehicular communication unit 12 communicates wirelessly with the vehicular control unit communication unit 62 of the vehicle 6.

The power consumption change pattern prediction unit 81 predicts the change pattern of the power consumption for one day of each day as follows.
First, the amount of power used every predetermined time (every day of the week), for example, every hour is acquired from the power consumption measuring unit 9, and the storage unit 11 associates each day of the week with each time zone and the amount of power used. To remember. In this case, for example, the latest 10 weeks are stored.

  When the power consumption data stored in the storage unit 11 is the power consumption data for the past one day, when the day of the week is changed, the change pattern of the power consumption for the first day is changed for the past day. A change pattern of power consumption is designated as a reference pattern, and is predicted and stored as a change pattern for today's day of the week. When the power consumption data stored in the storage unit 11 is the power consumption data for the past 2 to 6 days, the power consumption for each time is averaged and specified in the reference pattern, and the current day of the week is also specified. Predict and store as a change pattern.

  When the power consumption data stored in the storage unit 11 is equal to or more than the past week, a reference pattern is stored for each day of the week, so a change pattern (initially a reference pattern) corresponding to today's day of the week is read out. The pattern is a pattern predicted for today's day of the week (predicted pattern). In each day of the week, it is determined whether the present prediction pattern (initially the reference pattern) and the change pattern of the used power amount data acquired today are approximated by a predetermined approximate condition. The day of the week corresponding to today is stored as using the next reference pattern. If not approximated, the change pattern of the used power amount acquired today is designated as an individual pattern, and the day of the week corresponding to today is stored as the use of the individual pattern next time. In this way, each day of the week is classified into a reference pattern or an individual pattern and stored and updated to obtain the next predicted pattern.

  The reference pattern may be updated sequentially, and when there are a plurality of individual patterns, they may be integrated into one if approximated. FIG. 2 (a) shows the value of power consumption in each time zone in the reference pattern, and FIG. 2 (b) shows the change in power usage in each time zone. In FIG. 2, the amount of power used at each time indicates the amount of power used in the time period from each time until 1 hour has elapsed. For example, the amount of power used at time 0:00 indicates the amount of power used in the time zone from 0:00 to 1:00. A to F indicate characteristic points of the change pattern. This feature point is a large change point (a point that decreases from an increased state or vice versa) in the first and last time zones of the day.

  FIGS. 3A and 3B respectively show the values of the power consumption in each time zone and the changes in the power consumption in each time zone in the data (power consumption data) acquired today. In FIG. 3, a to k represent feature points. The above-mentioned “determination as to whether or not to approximate under a predetermined approximation condition” is a determination as to whether or not the above-described feature points are approximated under a predetermined approximation condition (for example, the difference in the number of feature points is within a predetermined number). It is.

FIG. 4 shows an example of classification (grouping) of reference patterns and individual patterns for each day of the week. For example, in the case of FIG. 4A, the reference pattern is set as the current prediction pattern from Monday to Friday, and the individual pattern 1 is set on Saturday and Sunday.
In addition, without classifying the above-mentioned reference pattern or individual pattern, a change pattern that averages the amount of power used for each time period on the same day in the past is prepared for each day of the week (Monday to Sunday), These change patterns may be used as prediction patterns for the corresponding day of the week.

  The power rate data acquisition unit 82 acquires the power rate data related to the time zone classification power rate set by the power company for each day of the week by, for example, wide area communication such as the Internet or direct input from the power company and other power rate data providing units. To do. This power rate is usually high during the daytime and cheap during the nighttime. And the parameter which weighted this electric power charge is set. This parameter is set, for example, so as to increase progressively as the power rate increases.

  The vehicle presence determination unit 83 communicates with the vehicle 6 to acquire the vehicle position information of the vehicle position detection means provided in the vehicle 6, and from this vehicle position information, a place where the vehicle 6 can discharge (at home) Whether it exists in a parking lot etc.). Further, the vehicle presence determination unit 83 acquires the presence / absence of the vehicle 6 for each time zone on each day of the week. If the vehicle 6 is present, the parameter “1” is obtained. If the vehicle 6 is not present, the parameter “0” is obtained. "Is associated with each day of the week and each time zone and stored in the storage unit 11. In addition, the structure which judges that there exists a vehicle may be sufficient when the secondary battery 61 of the vehicle 6 is connected to the charging / discharging connector 7.

  The vehicle presence probability calculation unit 84 averages the parameters corresponding to the presence / absence of the vehicle for each time zone of each day of the week. For example, as shown in FIG. 5A, in the case of a vehicle presence / absence pattern on Mondays of the past four weeks, the vehicle presence probability is as shown in FIG.

  The dischargeable battery remaining amount indexing unit 85 acquires the remaining battery amount detected by the remaining battery amount detecting means 65 through communication, and can travel the battery remaining amount and the minimum necessary battery remaining amount (for example, 10 km) in the vehicle 6. The remaining battery level of the secondary battery 61 can be determined based on the remaining battery level. That is, the value obtained by subtracting the minimum required battery level from the battery level is used as the remaining battery level.

  The discharge time zone setting unit 86 includes a power consumption change pattern predicted by the power consumption change pattern prediction unit 81, a power charge weighting parameter corresponding to the power charge data acquired by the power charge data acquisition unit 82, a vehicle Based on the vehicle existence probability calculated by the existence probability calculation unit 84 and the dischargeable battery remaining amount of the secondary battery 61 calculated by the dischargeable battery remaining amount calculation unit 85, the discharge time zone for each day of the week is set. A specific example of setting the discharge time zone will be described with reference to FIGS. In FIG. 6, in step T10, an expected value for each time zone is calculated. This expected value calculation method is obtained by the power consumption data acquisition unit 82 using the power usage amount in the change pattern of today's day of the week predicted by the power consumption change pattern prediction unit 81 in each time zone shown in FIG. The expected value for each time slot is calculated by multiplying the weighting parameter of the power charge corresponding to the power charge data by the vehicle existence probability calculated by the vehicle existence probability calculation unit 84. Thereafter, the process proceeds to step T20, where the expected values are compared with each other, and a higher priority is set for a higher expected value.

  In the next step T30, the amount of power used corresponding to the priority order is sequentially accumulated from the higher priority order. In step T40, it is determined whether or not the integrated value is less than the rechargeable battery remaining amount of the secondary battery 61 calculated by the dischargeable battery remaining amount determining unit 85. If “YES” (the integrated value is less than the remaining battery level that can be discharged), the process proceeds to step T50, and the time zone is set as the discharge time zone. While the integrated value is less than the remaining battery level that can be discharged, Step T30 to Step T50 are repeated.

If it is determined in step T40 that the integrated value is greater than or equal to the remaining battery level that can be discharged ("NO"), the process proceeds to step T55, the time zone is set as the discharge time zone, and the process proceeds to step T60. Migrate to finish setting, and return.
In this way, the priority time period until the integrated value reaches the dischargeable battery remaining amount (strictly, the integrated value becomes equal to or higher than the first dischargeable battery remaining amount) is set as the discharge time period. Set.

  For example, when the remaining battery capacity is 3 kwh and the priority order is the priority order shown in FIG. 7, the power consumption 0 in the time zone 12:00 (12: 0 to 13:00) that is the priority order 1 .258 kwh, power consumption 0.192 kwh in the time zone 16:00 (16:00 to 17:00) which is priority order 2 is sequentially integrated, and the integrated value and the dischargeable battery each time the integration is performed The remaining amount is compared with 3 kwh. When the integrated value becomes 3kwh or more of the remaining battery level that can be discharged first (when integrated up to priority level 13, the integrated value becomes 3.34kwh and becomes above 3kwh), the time zone up to this priority level 13 becomes It is set as a discharge time zone (see also FIG. 8). In this case, 7:00 to 9:00 is set as the first discharge time zone, and 11:00 to 22:00 is set as the second discharge time zone.

If the determination result of the vehicle presence determination unit 83 is that the vehicle is present when the current time is the discharge time zone set by the discharge time zone setting unit 86, the discharge control unit 87 A discharge start command is transmitted to cause the secondary battery 61 to discharge to the electric device 4, and when the discharge time period has elapsed, a discharge stop command is transmitted to stop the discharge from the secondary battery 61 to the electric device 4.
Further, the discharge control unit 87 acquires the remaining battery level by the remaining battery level detection unit 65 of the vehicle 6 while the secondary battery 61 is being discharged, and discharges when the remaining battery level becomes the minimum required battery level. A stop command is transmitted to the vehicle 6.

  Next, overall control of the main control unit 8 will be described with reference to FIG. In step S1, it is determined whether or not the day of the week has changed in step S10. If “YES”, the process proceeds to step S20, and the above-described used power amount change pattern prediction unit 81 changes the used power amount of today's day of the week. Predict and set the pattern as described above. In the next step S30, the vehicle presence probability calculation unit 84 described above calculates the vehicle presence probability for today's day of the week. In the next step S40, power charge data is acquired by the above-described power charge data acquisition unit 82, and a parameter weighted to the power charge is set. The acquisition of power rate data is preferably performed at least every time the power rate is revised.

  In the next step S50, the remaining battery level of the secondary battery 61 detected by the remaining battery level detection unit 65 of the vehicle 6 is acquired. In step S60, the remaining battery level that can be discharged by the above-described dischargeable battery remaining level determination unit 85. Is determined. In the next step S70, the discharge time zone setting unit 86 sets a discharge time zone (see FIG. 6 described above).

  Thereafter, the process proceeds to step S80, and it is determined whether or not the current time is within the set discharge time zone (initially, the time is 7:00). If “YES”, the process proceeds to step S90. . In step S90, it is determined whether or not the presence of the vehicle 6 is determined by the vehicle presence determination unit 83. If “YES” in the step S90, the process proceeds to a step S100, and the discharge control unit 87 transmits a discharge start command to the vehicle 6. In the vehicle 6 that has received this discharge start command, the discharge execution unit 64 starts discharging from the secondary battery 61 to the electrical device 4.

In step S110 subsequent to step S100, the remaining battery level of the secondary battery 61 is acquired, and in step S120, it is determined whether or not the remaining battery level is the minimum required level. In the case, the process proceeds to step S130. In step S130, it is determined whether or not all the discharge time periods have elapsed. If “NO”, step S80 to step S130 are repeated.
Here, when it is determined in step S120 that the remaining battery level has reached the minimum required level, or when it is determined in step S130 that all the discharge time periods have elapsed, the process proceeds to step S140 and is discharged. Send a stop command.

  If it is determined in step S90 that there is no vehicle ("NO"), the discharge time zone is reset in steps S150 to S180. In step S150, it is determined whether or not the elapsed time from the determination in step S90 has become a preset reset time (for example, 15 minutes). If it is determined that the reset time has been reached, the process proceeds to step S160. In step S170, the remaining battery level is obtained in the same manner as in step S60. In step S175, the remaining probability of the vehicle before the discharge time period is set to “0”. In step S180, the discharge time zone is set (reset) in the same manner as in step S70.

  This resetting will be described with a specific example. If it is determined that there is no vehicle in the discharge time zone 7:00 to 8:00 among the discharge time zones in FIG. As shown, the vehicle existence probability in the time zone before 7:00 to 8:00 is set to “0”, that is, the time zone before 7:00 to 8:00 is excluded from the setting target. To calculate the expected value. Then, the discharge order is further set from the expected value, and the discharge time zone is set in the same manner as described above. As a result, the discharge time zone is reset for the next time zone after the current discharge time zone (see FIG. 11).

  After step S180, if it is determined in step S190 that the vehicle is present, steps S200 to S230 (similar to steps S100 to S130) are executed. If it is determined in step S190 that there is no vehicle, the discharge time zone setting (resetting) is repeated until the day of the week changes (determined in step S240).

According to the present embodiment described above, the power usage change pattern predicting unit 81 predicts the daily power usage change pattern of each day of the week, so that each user's usage status, that is, life pattern of each user day of the week. Can be predicted.
In the present embodiment, the discharge time zone setting unit 86 uses the power usage amount change pattern predicted by the power usage amount change pattern prediction unit 85, the power rate data acquired by the power rate data acquisition unit 82, the vehicle Based on the vehicle existence probability calculated by the existence probability calculation unit 84 and the dischargeable battery remaining amount of the secondary battery calculated by the dischargeable battery remaining amount calculation unit 85, the discharge time zone for each day of the week is set. The discharge time zone can be set in accordance with the user's life pattern, taking into consideration the power charge, the presence / absence of the vehicle 6, and the remaining battery level of the secondary battery 61.

  If the vehicle presence determination unit 83 determines that the vehicle is present when the current time falls within the set discharge time zone, the discharge control unit 87 transmits a discharge start command to the vehicle 6. The discharge execution unit 63 of the vehicle 6 that has received this discharge start command starts the discharge from the secondary battery 61 in the discharge time zone, so that the discharge is performed in accordance with the user's life pattern and taking into account the power charge. be able to.

  Further, in the present embodiment, when the discharge control unit 87 acquires the remaining battery level by the remaining battery level detection unit 65 during the discharge of the secondary battery 61 and this remaining battery level becomes the minimum required battery level. A discharge stop command is transmitted to the vehicle 6. According to this, it is possible to reliably prevent the remaining battery level of the secondary battery 61 of the vehicle 6 from becoming the minimum required battery level. Furthermore, when the discharge time zone is set, as described above, when the remaining battery capacity is 3 kwh and the integrated value is 3.34 kwh, the set discharge time zone (priority in FIGS. 7 and 8). If all the discharges are performed in the order of 1 to 13, the minimum required battery level of the secondary battery 61 is slightly minus in the discharge time zone 21: 0 to 22:00 when the discharge is finally performed ( 0.34kwh minus minus (although there is no substantial adverse effect)), but when the remaining battery level becomes the minimum required battery level, a discharge stop command is sent to the vehicle 6, so the secondary It is possible to secure the minimum necessary battery level of the battery 61.

  In this case, in the present embodiment, the discharge time zone setting unit 86 weights the power usage amount predicted by the power usage amount change pattern prediction unit 81 and the power rate indicated by the power rate data for each time zone. Is multiplied by the vehicle presence probability, the priority for discharge is set for each time period from the multiplication result, and the power consumption corresponding to the priority is sequentially integrated from the higher priority. In addition, since the priority time zone until the integrated value becomes the remaining battery level that can be discharged is set as a discharge time zone, it can be set as a discharge time zone in order from a time zone that is comprehensively effective for discharging, And the discharge time slot | zone can be set in the range of the battery remaining amount which can be discharged.

  In the present embodiment, when the current time is the discharge time zone set by the discharge time zone setting unit 86 and the determination result of the vehicle presence determination unit 83 is that there is no vehicle, the discharge time zone setting is performed. The unit 86 resets the discharge time zone for the time zone after the current discharge time zone. According to this, when the vehicle 6 does not exist when the discharge time zone is reached, the discharge time zone is reset every time and the discharge control is retried. However, if the vehicle 6 returns, discharge control can be performed.

  FIG. 12 shows a second embodiment. In this second embodiment, Step S150 ′ and Step S175 ′ are different from Step S150 and Step 175 of FIG. 7 of the first embodiment. In the second embodiment, when it is determined in step S90 that there is no vehicle, the process proceeds to step S150 ′. In step S150 ′, the process waits until the vehicle 6 is present. When the vehicle 6 is present, the discharge time zone is reset as in the first embodiment. That is, when the determination result indicating the presence of the vehicle is indicated (“YES” in step S150 ′), the above-described steps S160 and S170 are executed. In step S175 ′, for the time zone before the discharge time zone, the vehicle existence probability is set to 0, and then step S180 is executed to reset the discharge time zone after the current time zone. I did it.

  In this second embodiment, when the vehicle is absent in the first discharge time zone, the discharge time zone is reset by waiting until the vehicle 6 is present. The discharge time zone can be reset in the time zone, and the discharge control can be started immediately after the discharge time zone is reset.

The present invention can be implemented in the same manner as the discharge plan for the charge plan as follows. Charge priority is set higher in the time zone where the amount of electricity stored in the vehicle is below a certain threshold (can be set arbitrarily) and the vehicle existence probability is 0.5 or more and the electricity rate is cheaper. Run.
The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is a power control system, 4 is an electrical device (discharge target), 7 is a power control device, 8 is a main control unit, 81 is a power consumption change pattern prediction unit (power consumption change pattern prediction means), and 82. Is a power rate data acquisition unit (power rate data acquisition unit), 83 is a vehicle presence determination unit (vehicle presence determination unit), 84 is a vehicle presence probability calculation unit (vehicle presence probability calculation unit), and 85 is a dischargeable battery remaining amount calculation. (Dischargeable battery remaining amount indexing means), 86 is a discharge time zone setting unit (discharge time zone setting means), and 87 is a discharge control unit (discharge control means).

Claims (10)

A power control system comprising a vehicle equipped with a secondary battery, and a power control device capable of communicating with the vehicle and controlling discharge from the secondary battery,
The vehicle, when receiving a discharge start command from the power control device, discharges from the secondary battery to the discharge target, and when receiving a discharge stop command, discharge execution means for stopping the discharge,
Battery remaining amount detecting means for detecting the remaining amount of the secondary battery,
The power control device
A power consumption change pattern predicting means for predicting a change pattern of the power consumption of the day of each day;
A power rate data acquisition means for acquiring power rate data related to a time zone classification power rate for each day of the week set by the power company;
Vehicle presence determination means for determining whether or not the vehicle is present at the chargeable / dischargeable location;
Vehicle existence probability calculating means for calculating a vehicle existence probability in which the vehicle exists at the chargeable / dischargeable place for each predetermined time zone on each day of the week;
A dischargeable battery remaining amount calculating means for calculating a dischargeable battery remaining amount of the secondary battery based on a battery remaining amount detected by the battery remaining amount detecting means and a minimum required battery remaining amount in the vehicle; ,
The change pattern of the used power amount predicted by the used power amount change pattern predicting unit, the power rate data acquired by the power rate data acquiring unit, the vehicle existence probability calculated by the vehicle presence probability calculating unit, A discharge time zone setting means for setting a discharge time zone for each day of the week based on the rechargeable battery remaining amount of the secondary battery calculated by the dischargeable battery remaining amount calculating means;
When the current time is the discharge time zone set by the discharge time zone setting means, if the determination result of the vehicle presence determination means is that there is a vehicle, a discharge start command is transmitted to the vehicle, and the discharge time Discharge control means for transmitting a discharge stop command if the belt has passed,
Power control system with   The discharge control means acquires a remaining battery level by the remaining battery level detection unit during discharging of the secondary battery, and issues a discharge stop command to the vehicle when the remaining battery level becomes the minimum required battery level. The power control system according to claim 1 for transmission.   The discharge time zone setting means, for each of the predetermined time zones, the used power amount predicted by the used power amount change pattern prediction means, a parameter weighted according to the power rate indicated by the power rate data, and Multiply the vehicle existence probability, set the priority for discharge for each predetermined time period from the multiplication result, sequentially integrate the power consumption corresponding to the priority from the higher priority, and the integrated value is 3. The power control system according to claim 1, wherein a priority time zone until the remaining battery level becomes dischargeable is set as a discharge time zone.   When the determination result of the vehicle presence determination means is that there is no vehicle when the current time becomes the discharge time zone set by the discharge time zone setting means, the discharge time zone setting means The power control system according to any one of claims 1 to 3, wherein a discharge time zone is reset for a time zone from the next of the discharge time zone.   When the current time is the discharge time zone set by the discharge time zone setting means and the determination result of the vehicle presence determination means is that there is no vehicle, the discharge time zone setting means The vehicle waits until the vehicle presence determination means determines that the vehicle is present, and when the vehicle presence determination result is indicated, the discharge time zone is reset for a time zone after the current time zone. Item 4. The power control system according to any one of Items 1 to 3. A power control device for controlling discharge from the secondary battery in a vehicle equipped with a secondary battery,
A power consumption change pattern predicting means for predicting a change pattern of the power consumption of the day of each day;
A power rate data acquisition means for acquiring power rate data related to a time zone classification power rate for each day of the week set by the power company;
Vehicle presence determination means for determining whether or not the vehicle is present at the chargeable / dischargeable location;
Vehicle existence probability calculating means for calculating a vehicle existence probability in which the vehicle exists at the chargeable / dischargeable place for each predetermined time zone on each day of the week;
Discharge is possible to obtain the remaining battery level of the secondary battery from the vehicle, and to determine the remaining battery level of the secondary battery based on the remaining battery level and the minimum required battery level in the vehicle Battery leveling means,
The change pattern of the used power amount predicted by the used power amount change pattern predicting unit, the power rate data acquired by the power rate data acquiring unit, the vehicle existence probability calculated by the vehicle presence probability calculating unit, A discharge time zone setting means for setting a discharge time zone for each day of the week based on the rechargeable battery remaining amount of the secondary battery calculated by the dischargeable battery remaining amount calculating means;
If the determination result of the vehicle presence determination means is that the vehicle is present when the current time is the discharge time zone set by the discharge time zone setting means, a discharge start command is transmitted to the vehicle, and the discharge time A discharge control means for transmitting a discharge stop command to the vehicle when the belt has passed,
A power control device.   The discharge control means acquires the remaining battery level of the secondary battery during the discharge of the secondary battery, and transmits a discharge stop command to the vehicle when the remaining battery level becomes the necessary minimum battery level. The power control apparatus according to claim 6.   The discharge time zone setting means, for each of the predetermined time zones, the used power amount predicted by the used power amount change pattern prediction means, a parameter weighted according to the power rate indicated by the power rate data, and Multiply the vehicle existence probability, set the priority for discharge for each predetermined time period from the multiplication result, sequentially integrate the power consumption corresponding to the priority from the higher priority, and the integrated value is The power control apparatus according to claim 6 or 7, wherein a time period of priority until the remaining battery capacity becomes dischargeable is set as a discharge time period.   When the determination result of the vehicle presence determination means is that there is no vehicle when the current time becomes the discharge time zone set by the discharge time zone setting means, the discharge time zone setting means The power control device according to any one of claims 6 to 8, wherein a discharge time zone is reset for a time zone from the next of the discharge time zone. When the current time is the discharge time zone set by the discharge time zone setting means and the determination result of the vehicle presence determination means is that there is no vehicle, the discharge time zone setting means The vehicle waits until the vehicle presence determination means determines that the vehicle is present, and when the vehicle presence determination result is indicated, the discharge time zone is reset for a time zone after the current time zone. Item 9. The power control apparatus according to any one of Items 6 to 8.

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