WO2015087375A1 - Storage battery control system, device, and method - Google Patents

Storage battery control system, device, and method Download PDF

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Publication number
WO2015087375A1
WO2015087375A1 PCT/JP2013/082910 JP2013082910W WO2015087375A1 WO 2015087375 A1 WO2015087375 A1 WO 2015087375A1 JP 2013082910 W JP2013082910 W JP 2013082910W WO 2015087375 A1 WO2015087375 A1 WO 2015087375A1
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Prior art keywords
charge
storage battery
discharge
command value
unit
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PCT/JP2013/082910
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French (fr)
Japanese (ja)
Inventor
横田 登志美
井上 秀樹
渡辺 雅浩
佐藤 康生
山根 憲一郎
犬塚 達基
裕 有田
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株式会社日立製作所
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Priority to PCT/JP2013/082910 priority Critical patent/WO2015087375A1/en
Publication of WO2015087375A1 publication Critical patent/WO2015087375A1/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/441Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
    • H01M10/482Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte for several batteries or cells simultaneously or sequentially

Abstract

When replacing storage batteries, fluctuations in performance (decline in the charging capacity and in the amount of discharge due to an increase in internal resistance) of multiple storage batteries are not taken into account, and this combined with the dramatic improvement in performance brought about by overall replacement results in large fluctuations in performance and makes it difficult to level out performance. The present invention provides a storage battery control system comprising two or more storage batteries which charge and discharge in accordance with a charge/discharge command value, and a charge/discharge command unit which issues the charge/discharge command value to the aforementioned storage batteries, the storage battery control system being characterized: by being provided with a replacement schedule reception unit which receives the replacement schedule for the storage batteries, a storage battery state retention unit for storing the storage battery states, and a charge/discharge command value calculation unit for calculating the charge/discharge command value on the basis of the replacement schedule and the storage battery states; and in that if the performance of the storage batteries is equal to or lower than a predetermined threshold value, the charge/discharge command based on the charge/discharge command value is carried out from the battery having the shortest expected life, which is determined on the basis of the replacement schedule and the storage battery states.

Description

Storage battery control system, apparatus and method

The present invention relates to a storage battery control system, apparatus, and method for performing charge / discharge control of a storage battery.

Conventionally, when a storage battery is operated, the life and performance of the storage battery are reduced when the storage battery control system is operated because the performance deteriorates as the capacity is reduced, the internal resistance increases, or the operator wants to replace the storage battery collectively. Considering operational control. For example, Patent Document 1 describes that the storage batteries to be supplied with electric power are determined according to a predetermined priority order, thereby distributing the life of each storage battery and distributing the replacement time (see summary). In Patent Document 2, a function for setting an evaluation function is, for example, an evaluation function in which the weighting of the standby time priority mode is increased when the operation mode set in the operation mode setting unit 51 is the standby time priority mode. Therefore, it is described that an evaluation function including the importance of each of the storage battery units 10-1 to 10-m is set based on the characteristic parameter and the configuration parameter.

JP 2000-31445 A JP 2012-205490 A

However, the above technology does not take into account fluctuations in the performance of multiple storage batteries (decrease in discharge due to increase in internal resistance, decrease in charge capacity) after actual storage battery replacement. Therefore, the fluctuation of the performance is large and the performance cannot be leveled.

In order to solve the above-described problems, the present invention provides a storage battery control system comprising two or more storage batteries that are charged and discharged according to a charge / discharge command value, and a charge / discharge command unit that gives the charge / discharge command value to the two or more storage batteries. The charge / discharge command value is calculated based on the replacement schedule receiving unit that receives the replacement schedule of the two or more storage batteries, the storage battery state holding unit that stores the storage battery state, and the replacement schedule and the storage battery state A command value calculation unit is provided, and when the performance of the two or more storage batteries is equal to or lower than a predetermined threshold, the charge / discharge command value is changed from a storage battery having a short assumed life determined based on the replacement schedule and the storage battery state. The charging / discharging instruction | command based on is performed.

According to the present invention, there is an effect that the performance of the system when the storage batteries are replaced can be leveled by changing the deterioration stage of the n storage batteries.

It is an example of the block diagram of the storage battery control system 100 of a present Example. It is an example of a block diagram of storage batteries 4-1 to 4-3 of the present embodiment. It is an example of the input screen of an exchange schedule reception part. It is an example of the input screen of an exchange schedule reception part. It is an example of the block diagram of the charging / discharging command value calculation part 2 of a present Example. It is a figure explaining the storage battery control system operation | movement by a present Example. It is explanatory drawing of the lifetime prediction of a present Example. It is explanatory drawing of the lifetime characteristic of a present Example. It is an example of a block diagram of storage batteries 4-1 to 4-3 of the present embodiment. It is an example of the flowchart explaining the storage battery control system operation | movement by a present Example. It is an example of the flowchart explaining the process of the storage battery control system 100 of a present Example. It is an example of the flowchart explaining the process of instruction | command charge / discharge amount Pc (i, i / o, t) determination part 2-7.

Hereinafter, preferred embodiments for implementing the present invention will be described. It should be noted that the following is merely an example of implementation and is not intended to limit the invention itself to the following specific contents.

In the present embodiment, an example of a storage battery control system 100 that performs charge / discharge by receiving a command charge / discharge amount will be described.
FIG. 1 is an example of a configuration diagram of a storage battery control system 100 of the present embodiment.
In the example, there are three storage batteries (storage batteries 4-1 to 4-3). When each charge / discharge command value is given by the charge / discharge command section 3, charging is performed according to the command value as much as possible. It discharges and outputs a charge / discharge result as a storage battery state. For example, when the charge / discharge amount per unit time is indicated as the charge / discharge command value, charging / discharging is performed in accordance with the charge / discharge command value, but the rising delay from the current charge / discharge amount and the remaining battery level (SOC) state are empty. If it is close, the command value may not be followed.

The exchange schedule accepting unit 1 accepts an input of an exchange schedule for any of the storage batteries 4-1 to 4-3 from the operator and passes it to the charge / discharge command value calculating unit 2. The exchange schedule will be described later with reference to FIGS.

The charge / discharge command value calculation unit 2 receives the replacement schedule from the replacement schedule reception unit 1, receives the storage battery state from the storage batteries 4-1 to 4-3, receives the storage battery state history data from the storage battery state holding 5, and receives the storage battery 4-1 The charge / discharge command value to 4-3 is calculated, and the charge / discharge command value is passed to the charge / discharge command unit 3.

The charge / discharge command unit 3 receives the charge / discharge command value from the charge / discharge command value calculation unit 2 to the storage batteries 4-1 to 4-3, and passes the value to each storage battery.

Here, the storage batteries 4-1 to 4-3 are located at the storage battery installation site, but the replacement schedule reception unit 1, the charge / discharge command value calculation unit 2, the charge / discharge command unit 3, and the storage battery state holding 5 are connected via a network. It may be installed at another site.

Fig. 2 shows the configuration of storage batteries 4-1 to 4-3. The storage battery control unit 4-i-1 and the storage battery main body 4-i-2 are configured such that when the charge / discharge command value is given from the charge / discharge command unit 3, the storage battery control unit performs charge / discharge according to the command value. Control main unit 4-i-2.

3 and 4 show examples of exchange schedule screens received by the exchange schedule acceptance unit 1. FIG. 3 is an example in which the input is performed in a period from the input schedule. FIG. 4 is an example of specifying the exchange schedule schedule. Input may be received in conjunction with the process chart. Also, as shown in FIG. 4, it is preferable to input only a part of the storage batteries and receive a “use for a long time” instruction. In this case, if the default is “use long” and the replacement schedule is rewritten for the input storage battery, the operator can save time and effort when there are many batteries. Also, if the screen shows the date of the day, the number of days until the replacement schedule date, and the expected number of actual operating days excluding the maintenance date, it can be used as a reference when the operator inputs. In addition, when browsing the set date after the replacement schedule has been set and the number of days has passed, if the remaining period or date is updated and displayed in accordance with the browse date, the schedule until the replacement is easy to understand.

FIG. 5 shows a configuration example of the charge / discharge command value calculation unit 2.

When the target life TL (i) of each storage battery i is received from the exchange schedule reception unit 1 (not shown), the operation period estimation unit 2-3 refers to the calendar 2-4, except for the period required for maintenance. Is obtained and passed to the target unit period charge / discharge amount TP (i, day) calculation unit 2-5.

The life prediction unit 2-1 receives a storage battery state from a storage battery state holding 5 (not shown), and calculates a life prediction value L (i). The predicted life value L (i) indicates, for example, a current value when it is assumed that there is 1 until the lifetime when the storage battery i is new. In this case, the life 0.3 is equivalent to 7 years if the life is 10 years, and is a value when the remaining years can be used for 3 years.

Target total charge / discharge amount TP (i, all) The calculation unit 2-2 receives the life prediction value L (i) from the life prediction unit 2-1, and can charge / discharge TP ( i, all). For example, if the total charge amount and the discharge amount P at the time of a new article are determined, it can be calculated by the following formula.
TP (i, all) = P * L (i)

At this time, the charge / discharge amount in a temporarily determined environment such as a constant temperature of 25 degrees or an expected wind power fluctuation may be calculated. By calculating in consideration of the history of the environment up to that point, the actual life can be made close to the target life. The target total charge / discharge amount TP (i, all) calculation unit 2-2 passes the target total charge / discharge amount TP (i, all) to the target unit period charge / discharge amount TP (i, day) calculation unit 2-5.

When the target unit period charge / discharge amount TP (i, day) calculation unit 2-5 receives the target total charge / discharge amount TP (i, all) and the actual operation period of each storage battery, the target charge / discharge amount per unit period is calculated. Calculate and pass to the command charge / discharge amount Pc (i, i / o, t) determination unit 2-7. For example, if the unit period is one day, the target unit period charge / discharge amount TP (i, day) is calculated by the following equation. The real operation period (days) is a numerical value representing the real operation period in days.
TP (i, day) = TP (i, all) / Real operation period (day)

The possible charge / discharge amount Pa (i, i / o, t) calculating unit 2-6 receives the storage battery SOC (i) at time t-1, and the possible charge / discharge range Pa (i, i / o, t t) is calculated. i / o is a code | symbol which shows whether it is charge i or discharge o, and an upper limit lower limit is set about each code | symbol. The possible charge / discharge range Pa (i, i / o, t) in SOC (i) is registered in advance in the database. In addition to SOC (i), if a possible charge / discharge range Pa (i, i / o, t) is obtained on the premise of acquiring temperature and voltage, the life can be controlled with high accuracy.

Charge / discharge amount integration ΣP (i, i / o, t ⊂ days) calculation Holding unit 2-8 acquires the amount of charge / discharge of each storage battery i, and calculates the integrated value after the unit period starts And hold. At the beginning of the unit period, the accumulated value is cleared.

The command charge / discharge amount Pc (i, i / o, t) determination unit 2-7 includes the total storage battery target charge / discharge amount Psum (t) obtained from the total storage battery target charge / discharge amount calculation unit 2-9 and possible charge / discharge Range Pa (i, i / o, t), target unit period charge / discharge amount TP (i, day), charge / discharge amount integration ΣP (i, i / o, t⊂day) calculation holding unit 2-8 In response, the command charge / discharge amount Pc (i, i / o, t) for each storage battery i is determined and output.

The determination by the command charge / discharge amount Pc (i, i / o, t) determination unit 2-7 is performed for the storage battery i according to the following criteria.

The object of the present invention is to level the performance by replacing and using n storage batteries so as to make a round in n times. This is because, as the storage battery continues to be used, the performance deteriorates, for example, the capacity decreases. Further, since the internal resistance increases, the efficiency of the discharge amount with respect to the charge amount decreases.

Fig. 6 is a diagram for explaining the operation of the storage battery control system. A storage battery with an assumed life L is used as a new one at a time, and when it reaches the end of its life, it is completely replaced. The transition of performance with the partial replacement in which the capacity 1 / N is replaced with a new one in turn is shown. Degradation of performance in all exchanges is as great as d_all, but d_sub approaches d_all / N by partial exchange, and has the effect of leveling performance.

If the threshold value th = [lower limit of d_sub] is set for the performance, and the performance of all the storage batteries is equal to or less than the threshold value th, all the batteries are replaced by replacing the battery with the closest target life or the battery that is significantly deteriorated. The lower limit of performance can be raised without much changing the total cost. In addition, performance and cost can be leveled.

If the performance C of the storage battery deteriorates by a%, it is defined as the life, the storage battery capacity is divided into N, and the estimated life L of the storage battery is replaced by 1 / N for each divided period. C_max (= C × a × Σ (i / N) (i = 0 to N-1) = C × a × (1- (N-1) / 2)) and C_min (= C × a × Σ ( i / N) (i = 1 to N) = C × a × (1-N / 2)). Therefore, N may be determined so that C_min> = C × threshold th. Therefore, when the performance C of the two or more storage batteries deteriorates by a% at the end of their lifetime, N <= (1-th / a) × 2 when the storage battery is used in the range of performance C> = C × threshold th. And

From the above, when the performance of all the storage batteries becomes lower than the threshold th, the following command value is calculated from the storage battery i having the shortest expected life.
When ΣP (i, i / o, t⊂ days) <TP (i, day),
If Pa (i, i / o, t)> = Psum (t),
Pc (i, i / o, t) = Psum (t)
At this time, Pc (j, i / o, t) is as follows.

Pc (j, i / o, t) = 0 (j ≠ i)
Or if Pa (i, i / o, t) <= Psum (t),
Pc (i, i / o, t) = Pa (i, i / o, t)
At this time, Pc (j, i / o, t) is as follows.

Pc (j, i / o, t) = (Psum (t) -Pc (i, i / o, t)) / (n-1) (j ≠ i)
Similarly, in the case of charging, the command values are assigned in the order from the shortest target life of the storage battery i. In the above description, the command value is equally assigned to n-1 for storage battery j, but the remainder of the command value may be assigned to storage battery j as follows.
Pc (j, i / o, t) = Psum (t) -Pc (i, i / o, t) (j ≠ i)
Furthermore, for storage battery k,
Pc (k, i / o, t) = Psum (t) -Pc (i, i / o, t)-Pc (j, i / o, t) (k ≠ j)
The command values are assigned in ascending order of the estimated life of the storage battery.

The life prediction unit 2-1 may re-estimate the life at a timing such as every unit period. The target total charge / discharge amount TP (i, all) calculation unit 2-2 calculates the charge / discharge amount in a tentatively determined environment such as a constant temperature of 25 degrees and wind fluctuations within the assumption. If the actual charge / discharge value is excessive or insufficient with respect to the charge / discharge value of the command value, or if the life is likely to be shortened or lengthened due to uncontrollable conditions such as a high temperature, the life expectancy will be the target value in subsequent operations. It is because it can cover so that it may approach. By repeating this, as shown in Fig. 7, when the "Actual life line" moves up and down from the "Deterioration target line to life" target unit period so that it approaches the "Deterioration target line to life" By reviewing and controlling the charge / discharge amount TP (i, day), the life of the storage battery can be accurately controlled.

If there is an excess or deficiency in the actual charge / discharge value relative to the charge / discharge value of the command value, the charge / discharge amount is added to the target total charge / discharge amount TP (i, all) in addition to the revision by the life prediction unit. By dividing by the remaining number of days until the end of life (unit period) including excess and deficiency, the same effect can be obtained even if the target unit period charge / discharge amount TP (i, days) is recalculated.

The unit period may be other than one day. When the number of days or hours is short, there is an effect that when the charge / discharge value of the command value is separated from the actual charge / discharge value and there is an excess or deficiency in charge / discharge, it can be reviewed at an early point and reflected in the control. It may be several weeks or months, and has the effect of being able to deal with cases where the life expectancy is assisted manually.

Hereinafter, a processing example of the life prediction unit 2-1 will be described. As an example, if the total charge / discharge amount up to the lifetime is indicated, the accumulated charge / discharge value up to the present is retained as the storage battery state from the storage battery state retention 5, and the following calculation formula is received. Thus, the lifetime can be predicted.

Life = Integrated value of charge / discharge up to the present / Total charge / discharge amount until life In another example, if a graph of the life characteristics of the storage battery is shown as shown in FIG. The graph shows that the charge / discharge cycle at the charge / discharge depth x can be repeated y times by the lifetime.
y = number of cycles (x)

As the storage battery state from the storage battery state holding 5, the charge / discharge cycle history up to the present is held, and the life can be predicted by the following calculation formula in response to this.
Σ1 / (number of cycles (cycle charge / discharge depth))
A rainflow method may be used as a method for cutting out a cycle from the charge / discharge pattern.

The storage battery state holding 5 does not hold the value necessary for the life prediction, but may hold the value in a charge / discharge history that can be calculated, and calculate the required value when necessary.

Fig. 9 shows a configuration of storage batteries 4-1 to 4-3 different from Fig. 2. The storage battery control unit 4-i-1 is a switch, and in the ON state, charging / discharging of the storage battery body 4-i-2 is not performed. When the charge / discharge command value is given from the charge / discharge command unit 3, the storage battery control unit 4-i-1 controls the storage battery body 4-i-2 so as to charge / discharge in accordance with the command value. In this case, the switch is opened up to the storage battery that satisfies the total storage battery target charge / discharge amount Psum (t) in order from the shortest target life, and the battery is charged and discharged. In a storage battery that satisfies the target unit period charge / discharge amount TP (i, day), the switch is closed during the unit period so as not to be charged / discharged.

Fig. 10 shows the operation and replacement procedures of the storage battery. The exchange schedule is accepted in step S101, operated in step S102, and exchanged in step S103. If the replacement schedule can be reviewed even during the operation of step S102, the life of the storage battery can be used up by postponing the replacement schedule when the life of the storage battery becomes longer. When reviewing the replacement schedule, as shown in Fig. 7, when the graphs of “Deterioration target line to life” and “Actual life line” after the setting date of the replacement schedule are shown, the operator It becomes easier to understand the background.

FIG. 11 shows an operation flow of the storage battery control system 100 shown in FIG. 1 in the operation of step S122 of FIG. The charge / discharge command value calculation unit 2 collects the storage battery state in step S111, and stores the storage battery state in the storage battery state holding 5 in step S112. The charge / discharge command value calculation unit 2 receives the charge / discharge target value in step S113, calculates the charge / discharge command value in step S114, and transmits the charge / discharge command value in step S115. In step S116, the storage batteries 4-1 to 4-3 charge and discharge the storage battery. If it is time to replace in step S117, the operation is terminated, and if not, steps S111 to S116 are repeated.

FIG. 12 shows an operation flow of the charge / discharge command value calculation unit 2 of FIG. If it is determined in step S121 that the unit period starts, steps S122 to S125 are performed. Life prediction unit 2-1 performs life prediction in step S122, target total charge / discharge amount TP (i, all) calculation unit 2-2 calculates target total charge / discharge amount TP (i, all) in step S123, The target unit period charge / discharge amount TP (i, day) calculation unit 2-5 calculates the target unit period charge / discharge amount TP (i, day) in step S124 and calculates the total charge / discharge amount ΣP (i, i / o, t Date) The calculation holding unit 2-8 clears the charge / discharge amount accumulation P (i, i / o, t⊂day) in step S125.
The possible charge / discharge amount Pa (i, i / o, t) calculation unit 2-6 calculates the possible charge / discharge amount Pa (i, i / o, t) in step S126, and the command charge / discharge amount Pc (i, i / (o, t) The determination unit 2-7 receives the total storage battery command charge / discharge amount Psum (t) from the total storage battery command charge / discharge amount calculation unit 2-9 in step S127, and in step S128, the command charge / discharge amount Pc (i, i / o, t) is determined, and the command charge / discharge amount value Pc (i, i / o, t) is transmitted in step S129. The charging / discharging amount integration ΣP (i, i / o, t ⊂ day) calculation holding unit 2-8 receives the actual charging / discharging amount P (i, i / o, t) in step S1210, and in step S1211 Charge / discharge amount integration ΣP (i, i / o, t⊂ days) is calculated and stored in charge / discharge amount integration ΣP (i, i / o, t⊂ days) calculation holding unit 2-8.

DESCRIPTION OF SYMBOLS 100 Storage battery control system 1 Exchange schedule reception part 2 Charge / discharge command value calculation part 3 Charge / discharge command part 4 Storage battery group 5 Storage battery state maintenance

Claims (12)

  1. In a storage battery control system comprising two or more storage batteries that are charged and discharged according to a charge / discharge command value, and a charge / discharge command unit that gives the charge / discharge command value to the two or more storage batteries,
    A replacement schedule receiving unit that receives a replacement schedule of the two or more storage batteries, a storage battery state holding unit that stores a storage battery state, and a charge / discharge command that calculates a charge / discharge command value based on the replacement schedule and the storage battery state With a value calculator,
    When the performance of the two or more storage batteries is equal to or lower than a predetermined threshold value, a charge / discharge command based on the charge / discharge command value is performed from a storage battery having a short assumed life determined based on the replacement schedule and the storage battery state. A storage battery control system.
  2. In the storage battery control system according to claim 1,
    The storage battery control system, wherein the predetermined threshold is determined based on a fluctuation range of performance of the two or more storage batteries.
  3. In the storage battery control system according to claim 1,
    After the charge / discharge command, a command value is assigned to a storage battery other than the commanded storage battery in ascending order of expected life.
  4. In the storage battery control system according to claim 1,
    A storage battery control system characterized in that, after the charge / discharge command, the command value is evenly distributed and assigned to storage batteries other than the storage battery that has issued the command.
  5. In the storage battery control system according to claim 1,
    The charge / discharge command value calculation unit includes a life prediction unit that performs life prediction of the storage battery based on the storage battery state, and a target total charge / discharge amount that calculates a target total charge / discharge amount that can be charged and discharged from the life prediction to the life. A storage battery control comprising: a calculation unit; and a target unit period charge / discharge amount calculation unit that calculates a target charge / discharge amount in a unit period based on an operation period determined from the replacement schedule and the target total charge / discharge amount system.
  6. In the storage battery control system according to claim 5,
    The life prediction unit periodically performs life prediction to control a target life, and a storage battery control system.
  7. In the storage battery control system according to claim 5,
    The target unit period charge / discharge amount calculation unit calculates a target charge / discharge amount by including an excess / shortage amount of an actual charge / discharge amount in the target total charge / discharge amount.
  8. In the storage battery control system according to claim 5,
    An operation period determined from the replacement schedule is determined in conjunction with a process chart.
  9. In the storage battery control system according to claim 5,
    The life prediction unit performs life prediction based on a charge / discharge cycle history.
  10. In the storage battery control system according to claim 5,
    A possible charge / discharge range calculation unit for calculating a possible charge / discharge range indicating a chargeable / dischargeable range at a certain time based on the storage battery state, a charge / discharge amount integration calculation unit for calculating an integrated amount of actual charge / discharge, and the storage battery Based on the total storage battery target charge / discharge amount calculation unit indicating the target charge / discharge amount of all storage batteries based on the state, the target charge / discharge amount of the all storage batteries, the possible charge / discharge range, and the integrated amount of the actual charge / discharge,
    A storage battery control system comprising: a command charge / discharge amount determination unit that determines a command charge / discharge amount.
  11. In a storage battery control method comprising two or more storage batteries that are charged and discharged according to a charge / discharge command value, and a charge / discharge command unit that gives the charge / discharge command value to the two or more storage batteries,
    Based on the replacement schedule and storage battery state of the two or more storage batteries, a charge / discharge command value is calculated, and when the performance of the two or more storage batteries falls below a predetermined threshold, the replacement schedule and storage battery state are set. The storage battery control method characterized by performing charge / discharge instruction | command based on the said charge / discharge instruction | command value from the storage battery with the short estimated lifetime judged based on.
  12. In a storage battery control device comprising two or more storage batteries that are charged and discharged according to a charge / discharge command value, and a charge / discharge command unit that gives the charge / discharge command value to the two or more storage batteries,
    A replacement schedule receiving unit that receives a replacement schedule of the two or more storage batteries, a storage battery state holding unit that stores a storage battery state, and a charge / discharge command that calculates a charge / discharge command value based on the replacement schedule and the storage battery state When the performance of the value calculation unit and the two or more storage batteries is equal to or lower than a predetermined threshold value, a charge based on the charge / discharge command value is determined from a storage battery having a short assumed life determined based on the replacement schedule and the storage battery state. A storage battery control device comprising: a charge / discharge command unit that issues a discharge command.
PCT/JP2013/082910 2013-12-09 2013-12-09 Storage battery control system, device, and method WO2015087375A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019105397A1 (en) * 2017-11-30 2019-06-06 上海微电子装备(集团)股份有限公司 Battery-swapping apparatus, battery-swapping system, and scheduling method
WO2019193884A1 (en) * 2018-04-06 2019-10-10 株式会社日立製作所 Energy storage system

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