WO2014087451A1 - Cell controller, power storage device, and power storage method - Google Patents

Cell controller, power storage device, and power storage method Download PDF

Info

Publication number
WO2014087451A1
WO2014087451A1 PCT/JP2012/007770 JP2012007770W WO2014087451A1 WO 2014087451 A1 WO2014087451 A1 WO 2014087451A1 JP 2012007770 W JP2012007770 W JP 2012007770W WO 2014087451 A1 WO2014087451 A1 WO 2014087451A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary battery
balance
battery units
power storage
unit
Prior art date
Application number
PCT/JP2012/007770
Other languages
French (fr)
Japanese (ja)
Inventor
宣幸 板橋
高治 松永
吉田　信秀
高橋　真吾
園 駱
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to PCT/JP2012/007770 priority Critical patent/WO2014087451A1/en
Priority to JP2014550808A priority patent/JPWO2014087451A1/en
Publication of WO2014087451A1 publication Critical patent/WO2014087451A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits

Definitions

  • the present invention relates to a battery control device, a power storage device, and a power storage method for controlling charging of a battery in which a plurality of secondary battery units are connected in series.
  • secondary batteries such as lithium ion batteries have been used in various places to reduce the burden on the environment.
  • a secondary battery is used as a power storage device
  • a plurality of secondary batteries are often connected in series in order to obtain a necessary voltage.
  • differences in progress of deterioration occur between the plurality of secondary batteries due to individual differences in the secondary batteries.
  • the voltage varies among the plurality of secondary batteries.
  • the power storage device is provided with a balance circuit to suppress this variation.
  • a balance circuit for example, there is a circuit in which the voltages of a plurality of secondary batteries are made uniform by discharging secondary batteries individually connected to resistors.
  • Patent Documents 1 and 2 it is described that the voltage is uniformed by a plurality of secondary batteries using a capacitor.
  • balance circuits There are two types of balance circuits, one that aligns the voltages of the secondary batteries by discharging the secondary batteries individually, and the other that aligns the charges by moving the charge between the plurality of secondary battery units.
  • the former has the advantage that the time until the voltages are uniform is short.
  • the latter has the advantage that electric power can be regenerated.
  • the present inventor has considered that if the balance circuit can be switched depending on the situation, the power consumption of the power storage device can be maintained while minimizing the power loss of the power storage device.
  • An object of the present invention is to provide a battery control device, a power storage device, and a power storage method capable of maintaining the usability of the power storage device while suppressing power loss of the power storage device.
  • a plurality of secondary battery units connected in series; First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units; Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units; Control means for selecting and operating one of the first balance means and the second balance means during charging; A power storage device is provided.
  • first balancing means for aligning voltages of a plurality of secondary battery units connected in series by individually discharging the secondary battery units; Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units; Control means for selecting and operating one of the first balance means and the second balance means; A battery control device is provided.
  • a plurality of secondary battery units connected in series; First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units; Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units; Prepare A power storage method is provided in which one of the first balance means and the second balance means is selected and operated.
  • FIG. 1 shows the structure of the battery control apparatus which concerns on 1st Embodiment with the use environment. It is a figure which shows an example of a 1st balance part. It is a figure which shows the 1st example of a 2nd balance part. It is a figure which shows the 2nd example of a 2nd balance part. It is a figure which shows the 1st example of the setting information which a control part uses. It is a figure which shows the 2nd example of the setting information which a control part uses. It is a figure which shows the 3rd example of the setting information which a control part uses. It is a figure which shows the 4th example of the setting information which a control part uses. It is a figure which shows the modification of FIG.
  • FIG. 1 is a diagram illustrating a configuration of a power storage device 10 according to the embodiment, together with a use environment thereof.
  • the power storage device 10 includes a plurality of secondary battery units 100, a first balance unit 210, a second balance unit 220, and a control unit 230.
  • the plurality of secondary battery units 100 are connected in series with each other.
  • the 1st balance part 210 arranges the voltage of the some secondary battery unit 100 by discharging the secondary battery unit 100 separately.
  • the second balance unit 220 aligns the voltages of the plurality of secondary battery units 100 by moving charges between the plurality of secondary battery units 100.
  • the controller 230 selects and operates one of the first balance unit 210 and the second balance unit 220 during charging.
  • the control unit 230 selects and operates one of the first balance unit 210 and the second balance unit 220. For this reason, when the control unit 230 selects the first balance unit 210 at an appropriate timing, it is possible to maintain the usability of the power storage device 10 while suppressing the power loss of the power storage device 10. Details will be described below.
  • each of the plurality of secondary battery units 100 is formed by connecting a plurality of battery cells 102 in parallel.
  • the battery cell 102 is, for example, a lithium ion battery.
  • the first balance unit 210, the second balance unit 220, and the control unit 230 constitute the balance control unit 20 (battery control device).
  • the balance control unit 20 can be connected to each of the positive and negative electrodes of the plurality of secondary battery units 100.
  • the balance control unit 20 is connected to the control device 60.
  • the control device 60 connects the system power supply 30 and the plurality of secondary battery units 100, and controls charging / discharging of the plurality of secondary battery units 100. Since the system power supply 30 is an AC power supply, the control device 60 has a DC-AC bidirectional conversion unit.
  • control unit 230 receives setting information from the outside.
  • the setting information is information indicating whether the control unit 230 selects one of the first balance unit 210 and the second balance unit 220 or a selection criterion thereof. Details of the setting information will be described later.
  • the control unit 230 measures the voltages of the plurality of secondary battery units 100 individually, and also controls the first balance unit 210 and the second balance unit 220. Furthermore, the control unit 230 measures the charging rate of the plurality of secondary battery units 100, that is, (current charge amount) / full charge amount.
  • the power storage device 10 has a temperature detection unit 240.
  • the temperature detection unit 240 detects the temperature of the secondary battery unit 100 or the container in which the secondary battery unit 100 is accommodated. The detection result of the temperature detection unit 240 is output to the control unit 230.
  • the timing at which the first balance unit 210 and the second balance unit 220 operate is, for example, when charging ends, but may be before charging is started.
  • FIG. 2 is a diagram illustrating an example of the first balance unit 210.
  • the first balance unit 210 has a resistor 212.
  • the 1st balance part 210 arranges the voltage of the some secondary battery unit 100 by selecting from which secondary battery unit 100 the electric current is sent through the resistance 212.
  • FIG. In the example shown in the figure, the positive terminal of the most upstream secondary battery unit 100, the two adjacent secondary battery units 100, and the negative terminal of the most downstream secondary battery unit 100 have different resistances. 212 is connected.
  • the adjacent resistors 212 are connected by a switch 214 (for example, a transistor).
  • the secondary battery unit 100 to be discharged can be selected by selecting the switch 214 to be turned on. Note that the selection of the switch 214 is performed by the control unit 230, for example.
  • FIG. 3 is a diagram illustrating a first example of the second balance unit 220.
  • the second balance unit 220 makes the inductor 221 and the inductor 222 face each other, and configures a transformer with these, thereby aligning the voltages among the plurality of secondary battery units 100.
  • the inductor 221 is connected to the positive electrode and the negative electrode of any of the secondary battery units 100.
  • different inductors 221 are provided for each of the plurality of secondary battery units 100.
  • the inductor 222 is connected to the positive electrode of the most upstream secondary battery unit 100 and the negative electrode of the most downstream secondary battery unit 100.
  • a switch 223 (for example, a transistor) is provided between the inductor 221 and the secondary battery unit 100. Then, by selecting the switch 223 to be turned on, a current flows from the secondary battery unit 100 having a high voltage to the inductor 221. The electric power that has flowed through the inductor 221 is transmitted to the inductor 222. The electric power transmitted to the inductor 222 is charged in the plurality of secondary battery units 100. Note that the selection of the switch 223 is performed by the control unit 230, for example.
  • FIG. 4 is a diagram illustrating a second example of the second balance unit 220.
  • the second balance unit 220 uses the capacitor 226 to align the voltages among the plurality of secondary battery units 100.
  • the capacitor 226 and the secondary battery unit 100 are connected via switches 224 and 225. Then, by selecting the switches 224 and 225 to be turned on, the secondary battery unit 100 connected to the capacitor 226 and its direction can be selected.
  • the secondary battery unit 100 having a relatively high voltage is connected to the capacitor 226 in the first direction, whereby a part of the power of the secondary battery unit 100 is transferred to the capacitor 226. .
  • the secondary battery unit 100 having a relatively low voltage is connected to the capacitor 226 in a second direction that is opposite to the first direction, whereby the power of the capacitor 226 is transferred to the secondary battery unit 100. Transfer. Note that the selection of the switches 224 and 225 is performed by the control unit 230, for example.
  • the structure of the 1st balance part 210 and the 2nd balance part 220 is not limited to an above-described example.
  • FIG. 5 shows a first example of setting information used by the control unit 230.
  • the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each time.
  • the control unit 230 acquires information indicating the current time, and then selects either the first balance unit 210 or the second balance unit 220 based on the current time.
  • FIG. 6 shows a second example of setting information used by the control unit 230.
  • the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each day of the week.
  • the control unit 230 acquires information indicating the current day of the week, and then selects either the first balance unit 210 or the second balance unit 220 according to the current day of the week.
  • FIG. 7 shows a third example of setting information used by the control unit 230.
  • the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each day of the week and time.
  • the control part 230 is either the 1st balance part 210 or the 2nd balance part 220 by the combination of the present day of the week and time. Select.
  • FIG. 8 shows a fourth example of setting information used by the control unit 230.
  • the setting information selects one of the first balance unit 210 and the second balance unit 220 based on the total charging rate (SOC: State Of Charge) of the plurality of secondary battery units 100. It is shown that.
  • the control unit 230 selects the second balance unit 220 when the charging rate is greater than or equal to the first reference value and less than or equal to the second reference value, and selects the first balance unit 210 when the charging rate is other than that. select.
  • the control unit 230 selects the first balance unit 210 when the charging rate is greater than or equal to the first reference value and less than or equal to the second reference value, and second when the charging rate is other than that.
  • the balance unit 220 may be selected. In this case, since the second balance unit 220 is used when the charging rate is high and low, the current for balance control can be kept low. For this reason, it is possible to balance with high accuracy.
  • FIG. 10 shows a fifth example of setting information used by the control unit 230.
  • the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the charging speed required for the power storage device 10.
  • the control unit 230 receives charge rate information (for example, information input by the user to the power storage device 10) indicating the requested charge rate from the outside.
  • the control unit 230 selects one of the first balance unit 210 and the second balance unit 220 based on the input charging speed information. For example, in the example shown in FIG. 10, the control unit 230 selects the first balance unit 210 when it is requested to charge rapidly.
  • FIG. 11 shows a sixth example of setting information used by the control unit 230.
  • the setting information is based on the combination of the charging speed required for the power storage device 10 and the total charging rate of the plurality of secondary battery units 100. One of them is selected. Then, the control unit 230 obtains information indicating the requested charging speed (for example, information input by the user to the power storage device 10) from the outside. The control unit 230 selects one of the first balance unit 210 and the second balance unit 220 based on the combination of the acquired information and the charging rate. For example, in the example shown in FIG.
  • control unit 230 may control the second balance unit 220. Otherwise, the first balance unit 210 is selected.
  • control unit 230 controls the control unit 230 when the charging rate is equal to or higher than the first value and lower than the second value (for example, 20 to 80%) and needs to be rapidly charged. May select the first balance unit 210, otherwise the second balance unit 220 may be selected.
  • FIG. 13 shows a seventh example of setting information used by the control unit 230.
  • the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the purpose of use of the power storage device 10.
  • the control unit 230 receives the purpose of use information indicating the purpose of use of the power storage device 10 from the outside.
  • the controller 230 selects one of the first balance unit 210 and the second balance unit 220 based on the input usage purpose information.
  • “backup” means that the power storage device 10 is used as a backup when the grid power is not supplied. In such a case, since the speed of charging speed is not required, the control unit 230 selects the second balance unit 220.
  • “Peak cut” means that the power storage device 10 is used to assist the grid power when the power usage reaches its peak. In such a case, since the high charging speed is required, the control unit 230 selects the first balance unit 210.
  • FIG. 14 shows an eighth example of setting information used by the control unit 230.
  • the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the temperature of the secondary battery unit 100 (that is, the detection result of the temperature detection unit 240). Show. Specifically, the control unit 230 selects the first balance unit 210 when the temperature of the secondary battery unit 100 is equal to or lower than a predetermined temperature and needs to be charged / discharged rapidly, Otherwise, the second balance unit 220 is selected. That is, the control unit 230 selects the second balance unit 220 that generates a relatively small amount of heat when the temperature of the secondary battery unit 100 is equal to or higher than a certain temperature. Thereby, it can suppress that the temperature of the secondary battery unit 100 further rises.
  • the balance control unit 20 includes the first balance unit 210 and the second balance unit 220.
  • the first balance unit 210 has a high charging speed.
  • the second balance unit 220 has little power loss.
  • the control unit 230 selects and operates one of the first balance unit 210 and the second balance unit 220 when aligning the voltages of the plurality of secondary battery units 100. For this reason, the usability of the power storage device 10 can be maintained while suppressing the power loss of the power storage device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

A plurality of se condary cell units (100) are connected in series to each other. A first balancing unit (210) makes the voltages of the plurality of se condary cell units (100) uniform by discharging the secondary cell units (100) individually. A second balancing unit (220) makes the voltages of the plurality of se condary cell units (100) uniform by moving electrical charges between the plurality of secondary cell units (100). A control unit (230) selects either the first balancing unit (210) or the second balancing unit (220) as the one to be operated at charge time.

Description

電池制御装置、蓄電装置、及び蓄電方法Battery control device, power storage device, and power storage method
　本発明は、複数の２次電池ユニットを直列に接続した電池の充電を制御する電池制御装置、蓄電装置、及び蓄電方法に関する。 The present invention relates to a battery control device, a power storage device, and a power storage method for controlling charging of a battery in which a plurality of secondary battery units are connected in series.
　近年は環境に対する負荷を小さくするため、様々なところでリチウムイオン電池などの２次電池が使用されている。２次電池を蓄電装置として用いる場合、必要な電圧を得るために、複数の２次電池を直列に接続することが多い。複数の２次電池を直列に接続して使用した場合、２次電池の個体差に起因して、複数の２次電池の間で劣化の進行に差が生じる。この場合、複数の２次電池で電圧にばらつきが生じてしまう。蓄電装置には、このばらつきを抑制するために、バランス回路が設けられている。バランス回路としては、例えば２次電池を個別に抵抗に接続して放電させることにより、複数の２次電池の電圧を揃えるものがある。 In recent years, secondary batteries such as lithium ion batteries have been used in various places to reduce the burden on the environment. When a secondary battery is used as a power storage device, a plurality of secondary batteries are often connected in series in order to obtain a necessary voltage. When a plurality of secondary batteries are connected in series and used, differences in progress of deterioration occur between the plurality of secondary batteries due to individual differences in the secondary batteries. In this case, the voltage varies among the plurality of secondary batteries. The power storage device is provided with a balance circuit to suppress this variation. As a balance circuit, for example, there is a circuit in which the voltages of a plurality of secondary batteries are made uniform by discharging secondary batteries individually connected to resistors.
　また特許文献１，２には、コンデンサを用いて複数の２次電池で電圧を揃えることが記載されている。 In Patent Documents 1 and 2, it is described that the voltage is uniformed by a plurality of secondary batteries using a capacitor.
特開２００１－１７８００８号公報JP 2001-178008 A 特開２０１１－２１１８７９号公報JP 2011-2111879 A
　バランス回路には、２次電池を個別に放電させることにより２次電池の電圧をそろえるものと、複数の２次電池ユニットの間で電荷を移動させることにより揃えるものがある。前者は、電圧が揃うまでの時間が短い、という利点を有する。一方、後者は、電力を回生できる、という利点を有する。本発明者は、状況によってバランス回路を切り替えられるようにすると、蓄電装置の電力のロスを最小限に抑制しつつ、蓄電装置の使い勝手を維持できる、と考えた。 There are two types of balance circuits, one that aligns the voltages of the secondary batteries by discharging the secondary batteries individually, and the other that aligns the charges by moving the charge between the plurality of secondary battery units. The former has the advantage that the time until the voltages are uniform is short. On the other hand, the latter has the advantage that electric power can be regenerated. The present inventor has considered that if the balance circuit can be switched depending on the situation, the power consumption of the power storage device can be maintained while minimizing the power loss of the power storage device.
　本発明の目的は、蓄電装置の電力のロスを抑制しつつ、蓄電装置の使い勝手を維持できる電池制御装置、蓄電装置、及び蓄電方法を提供することにある。 An object of the present invention is to provide a battery control device, a power storage device, and a power storage method capable of maintaining the usability of the power storage device while suppressing power loss of the power storage device.
　本発明によれば、直列に接続された複数の２次電池ユニットと、
　前記複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
　充電時に前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる制御手段と、
を備える蓄電装置が提供される。 According to the present invention, a plurality of secondary battery units connected in series;
First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units;
Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
Control means for selecting and operating one of the first balance means and the second balance means during charging;
A power storage device is provided.
　本発明によれば、直列に接続された複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
　前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる制御手段と、
を備える電池制御装置が提供される。 According to the present invention, first balancing means for aligning voltages of a plurality of secondary battery units connected in series by individually discharging the secondary battery units;
Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
Control means for selecting and operating one of the first balance means and the second balance means;
A battery control device is provided.
　本発明によれば、直列に接続された複数の２次電池ユニットと、
　前記複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
を準備し、
　前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる蓄電方法が提供される。 According to the present invention, a plurality of secondary battery units connected in series;
First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units;
Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
Prepare
A power storage method is provided in which one of the first balance means and the second balance means is selected and operated.
　本発明によれば、蓄電装置の電力のロスを抑制しつつ、蓄電装置の使い勝手を維持できる。 According to the present invention, it is possible to maintain the usability of the power storage device while suppressing power loss of the power storage device.
　上述した目的、およびその他の目的、特徴および利点は、以下に述べる好適な実施の形態、およびそれに付随する以下の図面によってさらに明らかになる。 The above-described object and other objects, features, and advantages will be further clarified by a preferred embodiment described below and the following drawings attached thereto.
第１の実施形態に係る電池制御装置の構成を、その使用環境と共に示す図である。It is a figure which shows the structure of the battery control apparatus which concerns on 1st Embodiment with the use environment. 第１バランス部の一例を示す図である。It is a figure which shows an example of a 1st balance part. 第２バランス部の第１例を示す図である。It is a figure which shows the 1st example of a 2nd balance part. 第２バランス部の第２例を示す図である。It is a figure which shows the 2nd example of a 2nd balance part. 制御部が用いる設定情報の第１例を示す図である。It is a figure which shows the 1st example of the setting information which a control part uses. 制御部が用いる設定情報の第２例を示す図である。It is a figure which shows the 2nd example of the setting information which a control part uses. 制御部が用いる設定情報の第３例を示す図である。It is a figure which shows the 3rd example of the setting information which a control part uses. 制御部が用いる設定情報の第４例を示す図である。It is a figure which shows the 4th example of the setting information which a control part uses. 図８の変形例を示す図である。It is a figure which shows the modification of FIG. 制御部が用いる設定情報の第５例を示す図である。It is a figure which shows the 5th example of the setting information which a control part uses. 制御部が用いる設定情報の第６例を示す図である。It is a figure which shows the 6th example of the setting information which a control part uses. 図１１の変形例を示す図である。It is a figure which shows the modification of FIG. 制御部が用いる設定情報の第７例を示す図である。It is a figure which shows the 7th example of the setting information which a control part uses. 制御部が用いる設定情報の第８例を示す図である。It is a figure which shows the 8th example of the setting information which a control part uses.
　以下、本発明の実施の形態について、図面を用いて説明する。尚、すべての図面において、同様な構成要素には同様の符号を付し、適宜説明を省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.
　図１は、実施形態に係る蓄電装置１０の構成を、その使用環境と共に示す図である。蓄電装置１０は、複数の２次電池ユニット１００、第１バランス部２１０、第２バランス部２２０、及び制御部２３０を備えている。複数の２次電池ユニット１００は互いに直列に接続されている。第１バランス部２１０は、複数の２次電池ユニット１００の電圧を、２次電池ユニット１００を個別に放電させることにより揃える。第２バランス部２２０は、複数の２次電池ユニット１００の電圧を、複数の２次電池ユニット１００の間で電荷を移動させることにより揃える。制御部２３０は、充電時に第１バランス部２１０及び第２バランス部２２０の一方を選択して動作させる。 FIG. 1 is a diagram illustrating a configuration of a power storage device 10 according to the embodiment, together with a use environment thereof. The power storage device 10 includes a plurality of secondary battery units 100, a first balance unit 210, a second balance unit 220, and a control unit 230. The plurality of secondary battery units 100 are connected in series with each other. The 1st balance part 210 arranges the voltage of the some secondary battery unit 100 by discharging the secondary battery unit 100 separately. The second balance unit 220 aligns the voltages of the plurality of secondary battery units 100 by moving charges between the plurality of secondary battery units 100. The controller 230 selects and operates one of the first balance unit 210 and the second balance unit 220 during charging.
　第１バランス部２１０を使用したとき、複数の２次電池ユニット１００の電圧が揃うまでの時間は、第２バランス部２２０を用いる場合と比べて短い。一方、第２バランス部２２０を使用すると、２次電池ユニット１００に蓄電されていた電力を他の２次電池ユニット１００に回生することができる。本実施形態では、制御部２３０が、第１バランス部２１０及び第２バランス部２２０の一方を選択して動作させる。このため、制御部２３０が第１バランス部２１０を適切なタイミングで選択することにより、蓄電装置１０の電力のロスを抑制しつつ、蓄電装置１０の使い勝手を維持することができる。以下、詳細に説明する。 When the first balance unit 210 is used, the time until the voltages of the plurality of secondary battery units 100 are aligned is shorter than when the second balance unit 220 is used. On the other hand, when the second balance unit 220 is used, the power stored in the secondary battery unit 100 can be regenerated to another secondary battery unit 100. In the present embodiment, the control unit 230 selects and operates one of the first balance unit 210 and the second balance unit 220. For this reason, when the control unit 230 selects the first balance unit 210 at an appropriate timing, it is possible to maintain the usability of the power storage device 10 while suppressing the power loss of the power storage device 10. Details will be described below.
　本実施形態において、複数の２次電池ユニット１００の各々は、複数の電池セル１０２を並列に接続したものである。電池セル１０２は、例えばリチウムイオン電池である。 In the present embodiment, each of the plurality of secondary battery units 100 is formed by connecting a plurality of battery cells 102 in parallel. The battery cell 102 is, for example, a lithium ion battery.
　第１バランス部２１０、第２バランス部２２０、及び制御部２３０は、バランス制御部２０（電池制御装置）を構成している。バランス制御部２０は、複数の２次電池ユニット１００の正極及び負極のそれぞれに接続することができる。 The first balance unit 210, the second balance unit 220, and the control unit 230 constitute the balance control unit 20 (battery control device). The balance control unit 20 can be connected to each of the positive and negative electrodes of the plurality of secondary battery units 100.
　またバランス制御部２０は、制御装置６０に接続している。制御装置６０は、系統電源３０と複数の２次電池ユニット１００とを接続しており、複数の２次電池ユニット１００の充放電を制御する。なお、系統電源３０は交流電源であるため、制御装置６０は、直流－交流双方向変換部を有している。 The balance control unit 20 is connected to the control device 60. The control device 60 connects the system power supply 30 and the plurality of secondary battery units 100, and controls charging / discharging of the plurality of secondary battery units 100. Since the system power supply 30 is an AC power supply, the control device 60 has a DC-AC bidirectional conversion unit.
　また制御部２３０は、外部から設定情報を受信する。設定情報は、制御部２３０が第１バランス部２１０及び第２バランス部２２０のいずれかを選択するか、その選択基準を示す情報である。設定情報の詳細については、後述する。また制御部２３０は、複数の２次電池ユニット１００の電圧を個別に測定しており、第１バランス部２１０及び第２バランス部２２０も制御している。さらに制御部２３０は、複数の２次電池ユニット１００の充電率、すなわち（現在の充電量）／満充電量も測定している。 Also, the control unit 230 receives setting information from the outside. The setting information is information indicating whether the control unit 230 selects one of the first balance unit 210 and the second balance unit 220 or a selection criterion thereof. Details of the setting information will be described later. In addition, the control unit 230 measures the voltages of the plurality of secondary battery units 100 individually, and also controls the first balance unit 210 and the second balance unit 220. Furthermore, the control unit 230 measures the charging rate of the plurality of secondary battery units 100, that is, (current charge amount) / full charge amount.
　また、蓄電装置１０は、温度検出部２４０を有している。温度検出部２４０は、２次電池ユニット１００、または２次電池ユニット１００が収容されている容器の温度を検出する。温度検出部２４０の検出結果は、制御部２３０に出力される。 Further, the power storage device 10 has a temperature detection unit 240. The temperature detection unit 240 detects the temperature of the secondary battery unit 100 or the container in which the secondary battery unit 100 is accommodated. The detection result of the temperature detection unit 240 is output to the control unit 230.
　なお、第１バランス部２１０及び第２バランス部２２０が動作するタイミングは、例えば充電が終了するときであるが、充電を開始する前であっても良い。 The timing at which the first balance unit 210 and the second balance unit 220 operate is, for example, when charging ends, but may be before charging is started.
　図２は、第１バランス部２１０の一例を示す図である。本図に示す例において、第１バランス部２１０は、抵抗２１２を有している。そして第１バランス部２１０は、いずれの２次電池ユニット１００から抵抗２１２に電流を流すかを選択することにより、複数の２次電池ユニット１００の電圧を揃える。本図に示す例において、最上流の２次電池ユニット１００の正極端子、隣接する２つの２次電池ユニット１００の間、及び最下流の２次電池ユニット１００の負極端子それぞれには、互いに異なる抵抗２１２が接続されている。また、隣り合う抵抗２１２は、スイッチ２１４（例えばトランジスタ）で接続されている。そして、オンされるスイッチ２１４を選択することで、放電する２次電池ユニット１００を選択することができる。なお、スイッチ２１４の選択は、例えば制御部２３０によって行われる。 FIG. 2 is a diagram illustrating an example of the first balance unit 210. In the example shown in the figure, the first balance unit 210 has a resistor 212. And the 1st balance part 210 arranges the voltage of the some secondary battery unit 100 by selecting from which secondary battery unit 100 the electric current is sent through the resistance 212. FIG. In the example shown in the figure, the positive terminal of the most upstream secondary battery unit 100, the two adjacent secondary battery units 100, and the negative terminal of the most downstream secondary battery unit 100 have different resistances. 212 is connected. The adjacent resistors 212 are connected by a switch 214 (for example, a transistor). The secondary battery unit 100 to be discharged can be selected by selecting the switch 214 to be turned on. Note that the selection of the switch 214 is performed by the control unit 230, for example.
　図３は、第２バランス部２２０の第１例を示す図である。本図に示す例において、第２バランス部２２０は、インダクタ２２１及びインダクタ２２２を互いに対向させ、これらでトランスを構成することにより、複数の２次電池ユニット１００の間の電圧を揃える。具体的には、インダクタ２２１は、いずれかの２次電池ユニット１００の正極及び負極に接続している。本図に示す例では、複数の２次電池ユニット１００それぞれに対して、互いに異なるインダクタ２２１が設けられている。また、インダクタ２２２は、最上流の２次電池ユニット１００の正極と、最下流の２次電池ユニット１００の負極に接続している。そして、インダクタ２２１と２次電池ユニット１００の間には、スイッチ２２３（例えばトランジスタ）が設けられている。そして、オンされるスイッチ２２３を選択することで、電圧が高い２次電池ユニット１００からインダクタ２２１に電流が流れる。そしてインダクタ２２１に流れた電力はインダクタ２２２に送電される。インダクタ２２２に送電された電力は、複数の２次電池ユニット１００に充電される。なお、スイッチ２２３の選択は、例えば制御部２３０によって行われる。 FIG. 3 is a diagram illustrating a first example of the second balance unit 220. In the example shown in the figure, the second balance unit 220 makes the inductor 221 and the inductor 222 face each other, and configures a transformer with these, thereby aligning the voltages among the plurality of secondary battery units 100. Specifically, the inductor 221 is connected to the positive electrode and the negative electrode of any of the secondary battery units 100. In the example shown in the figure, different inductors 221 are provided for each of the plurality of secondary battery units 100. The inductor 222 is connected to the positive electrode of the most upstream secondary battery unit 100 and the negative electrode of the most downstream secondary battery unit 100. A switch 223 (for example, a transistor) is provided between the inductor 221 and the secondary battery unit 100. Then, by selecting the switch 223 to be turned on, a current flows from the secondary battery unit 100 having a high voltage to the inductor 221. The electric power that has flowed through the inductor 221 is transmitted to the inductor 222. The electric power transmitted to the inductor 222 is charged in the plurality of secondary battery units 100. Note that the selection of the switch 223 is performed by the control unit 230, for example.
　図４は、第２バランス部２２０の第２例を示す図である。本図に示す例において、第２バランス部２２０は、キャパシタ２２６を用いて、複数の２次電池ユニット１００の間の電圧を揃える。具体的には、キャパシタ２２６と２次電池ユニット１００は、スイッチ２２４，２２５を介して接続している。そして、オンされるスイッチ２２４，２２５を選択することにより、キャパシタ２２６に接続する２次電池ユニット１００、及びその向きを選択できる。本図に示す例では、まず、相対的に電圧が高い２次電池ユニット１００を第１の向きでキャパシタ２２６に接続することにより、その２次電池ユニット１００の電力の一部をキャパシタ２２６に移す。そして、相対的に電圧が低い２次電池ユニット１００を、第１の向きとは逆向きである第２の向きでキャパシタ２２６に接続することで、キャパシタ２２６の電力をその２次電池ユニット１００に移す。なお、スイッチ２２４，２２５の選択は、例えば制御部２３０によって行われる。 FIG. 4 is a diagram illustrating a second example of the second balance unit 220. In the example shown in the drawing, the second balance unit 220 uses the capacitor 226 to align the voltages among the plurality of secondary battery units 100. Specifically, the capacitor 226 and the secondary battery unit 100 are connected via switches 224 and 225. Then, by selecting the switches 224 and 225 to be turned on, the secondary battery unit 100 connected to the capacitor 226 and its direction can be selected. In the example shown in the figure, first, the secondary battery unit 100 having a relatively high voltage is connected to the capacitor 226 in the first direction, whereby a part of the power of the secondary battery unit 100 is transferred to the capacitor 226. . Then, the secondary battery unit 100 having a relatively low voltage is connected to the capacitor 226 in a second direction that is opposite to the first direction, whereby the power of the capacitor 226 is transferred to the secondary battery unit 100. Transfer. Note that the selection of the switches 224 and 225 is performed by the control unit 230, for example.
　なお、第１バランス部２１０及び第２バランス部２２０の構成は、上記した例に限定されない。 In addition, the structure of the 1st balance part 210 and the 2nd balance part 220 is not limited to an above-described example.
　図５は、制御部２３０が用いる設定情報の第１例を示している。本図に示す例において、設定情報は、時刻別に、第１バランス部２１０及び第２バランス部２２０のいずれを用いるかを示している。そして本図に示す例では、制御部２３０は、現在の時刻を示す情報を取得した上で、現在の時刻に基づいて、第１バランス部２１０及び第２バランス部２２０のいずれかを選択する。 FIG. 5 shows a first example of setting information used by the control unit 230. In the example shown in the figure, the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each time. In the example illustrated in the drawing, the control unit 230 acquires information indicating the current time, and then selects either the first balance unit 210 or the second balance unit 220 based on the current time.
　図６は、制御部２３０が用いる設定情報の第２例を示している。本図に示す例において、設定情報は、曜日別に、第１バランス部２１０及び第２バランス部２２０のいずれを用いるかを示している。そして本図に示す例では、制御部２３０は、現在の曜日を示す情報を取得した上で、現在の曜日によって、第１バランス部２１０及び第２バランス部２２０のいずれかを選択する。 FIG. 6 shows a second example of setting information used by the control unit 230. In the example shown in the figure, the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each day of the week. In the example shown in the figure, the control unit 230 acquires information indicating the current day of the week, and then selects either the first balance unit 210 or the second balance unit 220 according to the current day of the week.
　図７は、制御部２３０が用いる設定情報の第３例を示している。本図に示す例において、設定情報は、曜日かつ時刻別に、第１バランス部２１０及び第２バランス部２２０のいずれを用いるかを示している。そして本図に示す例では、制御部２３０は、現在の曜日及び時刻を示す情報を取得した上で、現在の曜日及び時刻の組み合わせによって、第１バランス部２１０及び第２バランス部２２０のいずれかを選択する。 FIG. 7 shows a third example of setting information used by the control unit 230. In the example shown in the figure, the setting information indicates which of the first balance unit 210 and the second balance unit 220 is used for each day of the week and time. And in the example shown in this figure, after acquiring the information which shows the present day of the week and time, the control part 230 is either the 1st balance part 210 or the 2nd balance part 220 by the combination of the present day of the week and time. Select.
　図８は、制御部２３０が用いる設定情報の第４例を示している。本図に示す例において、設定情報は、複数の２次電池ユニット１００の合計の充電率（ＳＯＣ：State Of Charge）に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択することを示している。具体的には、制御部２３０は、充電率が第１基準値以上第２基準値以下である場合に第２バランス部２２０を選択し、充電率がそれ以外の場合に第１バランス部２１０を選択する。 FIG. 8 shows a fourth example of setting information used by the control unit 230. In the example shown in the drawing, the setting information selects one of the first balance unit 210 and the second balance unit 220 based on the total charging rate (SOC: State Of Charge) of the plurality of secondary battery units 100. It is shown that. Specifically, the control unit 230 selects the second balance unit 220 when the charging rate is greater than or equal to the first reference value and less than or equal to the second reference value, and selects the first balance unit 210 when the charging rate is other than that. select.
　なお、図９に示すように、制御部２３０は、充電率が第１基準値以上第２基準値以下である場合に第１バランス部２１０を選択し、充電率がそれ以外の場合に第２バランス部２２０を選択してもよい。この場合、充電率が高い場合及び低い場合に第２バランス部２２０を用いるため、バランス制御のための電流を低く抑えることができる。このため、高精度にバランスをとることができる。 As shown in FIG. 9, the control unit 230 selects the first balance unit 210 when the charging rate is greater than or equal to the first reference value and less than or equal to the second reference value, and second when the charging rate is other than that. The balance unit 220 may be selected. In this case, since the second balance unit 220 is used when the charging rate is high and low, the current for balance control can be kept low. For this reason, it is possible to balance with high accuracy.
　図１０は、制御部２３０が用いる設定情報の第５例を示している。本図に示す例において、設定情報は、蓄電装置１０に求められる充電速度に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択することを示している。そして制御部２３０は、要求する充電速度の大小を示す充電速度情報（例えばユーザが蓄電装置１０に入力する情報）を、外部から入力される。制御部２３０は、入力された充電速度情報に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択する。例えば図１０に示す例では、急速に充電することを要求されている場合には、制御部２３０は第１バランス部２１０を選択する。 FIG. 10 shows a fifth example of setting information used by the control unit 230. In the example shown in the drawing, the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the charging speed required for the power storage device 10. Then, the control unit 230 receives charge rate information (for example, information input by the user to the power storage device 10) indicating the requested charge rate from the outside. The control unit 230 selects one of the first balance unit 210 and the second balance unit 220 based on the input charging speed information. For example, in the example shown in FIG. 10, the control unit 230 selects the first balance unit 210 when it is requested to charge rapidly.
　図１１は、制御部２３０が用いる設定情報の第６例を示している。本図に示す例において、設定情報は、蓄電装置１０に求められる充電速度及び複数の２次電池ユニット１００の合計の充電率の組み合わせに基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択することを示している。そして制御部２３０は、要求する充電速度を示す情報（例えばユーザが蓄電装置１０に入力する情報）を、外部から取得する。制御部２３０は、取得した情報及び充電率の組み合わせに基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択する。例えば図１１に示す例では、充電量が第１の値以上第２の値未満（例えば２０～８０％）にあり、かつ急速に充電する必要がない場合、制御部２３０は第２バランス部２２０を選択し、それ以外の場合は第１バランス部２１０を選択する。 FIG. 11 shows a sixth example of setting information used by the control unit 230. In the example shown in this figure, the setting information is based on the combination of the charging speed required for the power storage device 10 and the total charging rate of the plurality of secondary battery units 100. One of them is selected. Then, the control unit 230 obtains information indicating the requested charging speed (for example, information input by the user to the power storage device 10) from the outside. The control unit 230 selects one of the first balance unit 210 and the second balance unit 220 based on the combination of the acquired information and the charging rate. For example, in the example shown in FIG. 11, when the amount of charge is greater than or equal to the first value and less than the second value (for example, 20 to 80%) and it is not necessary to charge rapidly, the control unit 230 may control the second balance unit 220. Otherwise, the first balance unit 210 is selected.
　なお、図１２に示すように、制御部２３０は、充電率が第１の値以上第２の値未満（例えば２０～８０％）にあり、かつ急速に充電する必要がある場合、制御部２３０は第１バランス部２１０を選択し、それ以外の場合は第２バランス部２２０を選択してもよい。 As shown in FIG. 12, the control unit 230 controls the control unit 230 when the charging rate is equal to or higher than the first value and lower than the second value (for example, 20 to 80%) and needs to be rapidly charged. May select the first balance unit 210, otherwise the second balance unit 220 may be selected.
　図１３は、制御部２３０が用いる設定情報の第７例を示している。本図に示す例において、設定情報は、蓄電装置１０の使用目的に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択することを示している。そして制御部２３０は、蓄電装置１０の使用目的を示す使用目的情報を、外部から入力される。制御部２３０は、入力された使用目的情報に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択する。本図に示す例において、「バックアップ」は、系統電力が供給されなくなったときのバックアップとして蓄電装置１０が使用されることを意味している。このような場合、充電速度の速さは要求されないため、制御部２３０は第２バランス部２２０を選択する。また、「ピークカット」は、電力使用量がピークを迎えるときに、系統電力を補助するために蓄電装置１０が使用されることを意味している。このような場合、充電速度の速さが要求されるため、制御部２３０は、第１バランス部２１０を選択する。 FIG. 13 shows a seventh example of setting information used by the control unit 230. In the example shown in the figure, the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the purpose of use of the power storage device 10. Then, the control unit 230 receives the purpose of use information indicating the purpose of use of the power storage device 10 from the outside. The controller 230 selects one of the first balance unit 210 and the second balance unit 220 based on the input usage purpose information. In the example shown in the figure, “backup” means that the power storage device 10 is used as a backup when the grid power is not supplied. In such a case, since the speed of charging speed is not required, the control unit 230 selects the second balance unit 220. “Peak cut” means that the power storage device 10 is used to assist the grid power when the power usage reaches its peak. In such a case, since the high charging speed is required, the control unit 230 selects the first balance unit 210.
　図１４は、制御部２３０が用いる設定情報の第８例を示している。本図に示す例において、設定情報は、２次電池ユニット１００の温度（すなわち温度検出部２４０の検出結果）に基づいて、第１バランス部２１０及び第２バランス部２２０の一方を選択することを示している。具体的には、制御部２３０は、２次電池ユニット１００の温度がある定められた温度以下であり、かつ急速に充放電を行う必要がある場合には第１バランス部２１０を選択し、それ以外の場合には、第２バランス部２２０を選択する。すなわち、制御部２３０は、２次電池ユニット１００の温度がある温度以上の場合は、発熱量が相対的に小さい第２バランス部２２０を選択する。これにより、２次電池ユニット１００の温度がさらに上昇することを抑制できる。 FIG. 14 shows an eighth example of setting information used by the control unit 230. In the example shown in the drawing, the setting information indicates that one of the first balance unit 210 and the second balance unit 220 is selected based on the temperature of the secondary battery unit 100 (that is, the detection result of the temperature detection unit 240). Show. Specifically, the control unit 230 selects the first balance unit 210 when the temperature of the secondary battery unit 100 is equal to or lower than a predetermined temperature and needs to be charged / discharged rapidly, Otherwise, the second balance unit 220 is selected. That is, the control unit 230 selects the second balance unit 220 that generates a relatively small amount of heat when the temperature of the secondary battery unit 100 is equal to or higher than a certain temperature. Thereby, it can suppress that the temperature of the secondary battery unit 100 further rises.
　以上、本実施形態によれば、バランス制御部２０は、第１バランス部２１０及び第２バランス部２２０を有している。第１バランス部２１０は、充電速度が速い。一方、第２バランス部２２０は、電力のロスが少ない。そして、制御部２３０は、複数の２次電池ユニット１００の電圧を揃えるとき、第１バランス部２１０及び第２バランス部２２０の一方を選択して動作させる。このため、蓄電装置１０の電力のロスを抑制しつつ、蓄電装置１０の使い勝手を維持できる。 As described above, according to the present embodiment, the balance control unit 20 includes the first balance unit 210 and the second balance unit 220. The first balance unit 210 has a high charging speed. On the other hand, the second balance unit 220 has little power loss. The control unit 230 selects and operates one of the first balance unit 210 and the second balance unit 220 when aligning the voltages of the plurality of secondary battery units 100. For this reason, the usability of the power storage device 10 can be maintained while suppressing the power loss of the power storage device 10.
　以上、図面を参照して本発明の実施形態について述べたが、これらは本発明の例示であり、上記以外の様々な構成を採用することもできる。 As described above, the embodiments of the present invention have been described with reference to the drawings. However, these are exemplifications of the present invention, and various configurations other than the above can be adopted.

Claims (8)

  1. 　直列に接続された複数の２次電池ユニットと、
    　前記複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
    　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
    　充電時に前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる制御手段と、
    を備える蓄電装置。     A plurality of secondary battery units connected in series;
    First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units;
    Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
    Control means for selecting and operating one of the first balance means and the second balance means during charging;
    A power storage device comprising:
  2. 　請求項１に記載の蓄電装置において、
    　前記制御手段は、前記複数の２次電池ユニットの充電率に基づいて、前記第１バランス手段及び前記第２バランス手段の一方を選択する蓄電装置。     The power storage device according to claim 1,
    The control means is a power storage device that selects one of the first balance means and the second balance means based on a charging rate of the plurality of secondary battery units.
  3. 　請求項１に記載の蓄電装置において、
    　前記制御手段は、時刻及び曜日の少なくとも一方に基づいて、前記第１バランス手段及び前記第２バランス手段の一方を選択する蓄電装置。     The power storage device according to claim 1,
    The power storage device, wherein the control means selects one of the first balance means and the second balance means based on at least one of time and day of the week.
  4. 　請求項１に記載の蓄電装置において、
    　前記制御手段は、前記複数の２次電池ユニットに要求される充電速度の大小を示す充電速度情報を取得し、取得した前記充電速度情報に基づいて、前記第１バランス手段及び前記第２バランス手段の一方を選択する蓄電装置。     The power storage device according to claim 1,
    The control means acquires charging speed information indicating the magnitude of charging speed required for the plurality of secondary battery units, and based on the acquired charging speed information, the first balance means and the second balance means A power storage device that selects one of the two.
  5. 　請求項１に記載の蓄電装置において、
    　前記制御手段は、前記複数の２次電池ユニットの使用目的を示す使用目的情報を取得し、取得した使用目的情報に基づいて前記第１バランス手段及び前記第２バランス手段の一方を選択する蓄電装置。     The power storage device according to claim 1,
    The control means acquires use purpose information indicating a use purpose of the plurality of secondary battery units, and selects one of the first balance means and the second balance means based on the obtained use purpose information .
  6. 　請求項１に記載の蓄電装置において、
    　前記制御手段は、前記複数の２次電池ユニットの温度を示す温度情報を取得し、取得した前記温度情報に基づいて前記第１バランス手段及び前記第２バランス手段の一方を選択する蓄電装置。     The power storage device according to claim 1,
    The power storage device, wherein the control means acquires temperature information indicating temperatures of the plurality of secondary battery units, and selects one of the first balance means and the second balance means based on the acquired temperature information.
  7. 　直列に接続された複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
    　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
    　前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる制御手段と、
    を備える電池制御装置。     First balancing means for aligning voltages of a plurality of secondary battery units connected in series by individually discharging the secondary battery units;
    Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
    Control means for selecting and operating one of the first balance means and the second balance means;
    A battery control device comprising:
  8. 　直列に接続された複数の２次電池ユニットと、
    　前記複数の２次電池ユニットの電圧を、前記２次電池ユニットを個別に放電させることにより揃える第１バランス手段と、
    　前記複数の２次電池ユニットの電圧を、前記複数の２次電池ユニットの間で電荷を移動させることにより揃える第２バランス手段と、
    を準備し、
    　前記第１バランス手段及び前記第２バランス手段の一方を選択して動作させる蓄電方法。     A plurality of secondary battery units connected in series;
    First balancing means for aligning voltages of the plurality of secondary battery units by individually discharging the secondary battery units;
    Second balancing means for aligning voltages of the plurality of secondary battery units by moving electric charge between the plurality of secondary battery units;
    Prepare
    A power storage method of selecting and operating one of the first balance means and the second balance means.
PCT/JP2012/007770 2012-12-04 2012-12-04 Cell controller, power storage device, and power storage method WO2014087451A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2012/007770 WO2014087451A1 (en) 2012-12-04 2012-12-04 Cell controller, power storage device, and power storage method
JP2014550808A JPWO2014087451A1 (en) 2012-12-04 2012-12-04 Battery control device, power storage device, and power storage method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/007770 WO2014087451A1 (en) 2012-12-04 2012-12-04 Cell controller, power storage device, and power storage method

Publications (1)

Publication Number Publication Date
WO2014087451A1 true WO2014087451A1 (en) 2014-06-12

Family

ID=50882907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/007770 WO2014087451A1 (en) 2012-12-04 2012-12-04 Cell controller, power storage device, and power storage method

Country Status (2)

Country Link
JP (1) JPWO2014087451A1 (en)
WO (1) WO2014087451A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002369400A (en) * 2001-06-11 2002-12-20 Yazaki Corp Device and method for adjusting charged state of battery pack
WO2012143996A1 (en) * 2011-04-18 2012-10-26 日立ビークルエナジー株式会社 Electric storage device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002369400A (en) * 2001-06-11 2002-12-20 Yazaki Corp Device and method for adjusting charged state of battery pack
WO2012143996A1 (en) * 2011-04-18 2012-10-26 日立ビークルエナジー株式会社 Electric storage device

Also Published As

Publication number Publication date
JPWO2014087451A1 (en) 2017-01-05

Similar Documents

Publication Publication Date Title
JP6937064B1 (en) Battery charging / discharging device and method
JP6840525B2 (en) Battery control method, battery control device, and battery pack
CN103329338B (en) Battery pack and power consumption apparatus
JP5498742B2 (en) Cell balancing system using transformer
US20100072947A1 (en) Multi-Cell Battery Pack Charge Balance Circuit
WO2013140710A1 (en) Balance correction device and power storage system
JP2009044946A (en) Method for charging battery pack
US9755439B2 (en) Battery state control circuit, battery state control device, and battery pack
JP2007318950A (en) Cell voltage balancing device for secondary battery
CN109874366B (en) Electric machine and apparatus
JP5187407B2 (en) Auxiliary battery charger
JP2006311798A (en) Charger of battery
Oriti et al. Battery management system with cell equalizer for multi-cell battery packs
JP2019503640A (en) Cell balancing system and control method
KR20140052525A (en) Circuit for charging battery and boosting voltage of battery and method for charging battery
JP5861063B2 (en) Power storage device and power supply system
JP2013013292A (en) Cell balancing circuit based on energy transfer via inductor
WO2013114757A1 (en) Battery equalization device and method
JP2017108483A (en) Power storage state adjustment device, battery pack, load system and power storage state adjustment method
JP2016040999A (en) Charged state equalization method of storage battery device
JP2016154423A (en) Voltage balance device
WO2014087451A1 (en) Cell controller, power storage device, and power storage method
JP5718702B2 (en) Balance correction device and power storage system
JP6591683B2 (en) Charging voltage supply device and supply method
JP6919701B2 (en) Power storage status adjustment device, battery pack, load system and storage status adjustment method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12889688

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014550808

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12889688

Country of ref document: EP

Kind code of ref document: A1