JP5877360B2 - Storage battery control system - Google Patents

Storage battery control system Download PDF

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JP5877360B2
JP5877360B2 JP2011118288A JP2011118288A JP5877360B2 JP 5877360 B2 JP5877360 B2 JP 5877360B2 JP 2011118288 A JP2011118288 A JP 2011118288A JP 2011118288 A JP2011118288 A JP 2011118288A JP 5877360 B2 JP5877360 B2 JP 5877360B2
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JP2012249390A (en
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高橋　勇人
勇人 高橋
小林　晋
晋 小林
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Panasonic Intellectual Property Management Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E60/10—Energy storage using batteries

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Description

本発明は、蓄電池の充電と放電を制御する蓄電池制御システムに関する。   The present invention relates to a storage battery control system that controls charging and discharging of a storage battery.

近年、電力需要が少なくなる夜間に電力を貯蔵(充電)し、電力需要が多くなる昼間に、貯蔵した電力を使用(放電)することで電力系統の需給バランスを平準化することが行われている。例えば、特許文献１に記載されている従来例では、建物の各階に蓄電池が設置され、それぞれの蓄電池が深夜(電力料金の安価な時間帯)に一斉に充電され、昼間の時間帯に各蓄電池から順番に放電されるようになっている。   In recent years, power has been stored (charged) at night when power demand decreases, and during the daytime when power demand increases, the stored power can be used (discharged) to balance the power supply and demand balance. Yes. For example, in the conventional example described in Patent Document 1, storage batteries are installed on each floor of a building, and each storage battery is charged all at once in the middle of the night (inexpensive time period for power charges). The battery is discharged in order.

特開２００３−２９９２５１号公報JP 2003-299251 A

ところで、蓄電池はその種類によって放置状態(充電及び放電されない状態)における最適な充電レベル(充電状態：SOC<State Of Charge>とも呼ばれる。)が異なっている。例えば、リチウムイオン電池の場合、充電レベルが低すぎると放置期間中の自己放電によって過放電状態に陥る虞があり、反対に充電レベルが高すぎる(例えば、満充電)と電池セル内部のガス圧力が上昇して蓄電池の寿命を縮める虞がある。したがって、リチウムイオン電池は、40％〜60％程度の充電レベルで放置されることが望ましく、当該範囲外の充電レベルで長期間放置された場合、著しく性能が劣化してしまう虞がある。   By the way, the optimum charge level (charge state: also referred to as SOC <State Of Charge>) in the state of being left (charged and not discharged) differs depending on the type of storage battery. For example, in the case of a lithium ion battery, if the charge level is too low, it may fall into an overdischarge state due to self-discharge during the standing period, and conversely, if the charge level is too high (for example, full charge), the gas pressure inside the battery cell May increase and shorten the life of the storage battery. Therefore, it is desirable that the lithium ion battery be left at a charge level of about 40% to 60%. If the lithium ion battery is left at a charge level outside the range for a long time, the performance may be significantly deteriorated.

本発明は、上記課題に鑑みて為されたものであり、放置による蓄電池の性能劣化を抑制することを目的とする。   This invention is made | formed in view of the said subject, and it aims at suppressing the performance deterioration of the storage battery by leaving unattended.

本発明の蓄電池制御システムは、複数の蓄電池と、当該蓄電池を充電し且つ放電させる複数の充放電部と、当該充放電部の充電動作及び放電動作を各別に制御する制御部とを有し、当該制御部は、前記蓄電池の充電レベルを所定の保護範囲内に維持する保護モードと、前記充電レベルを前記保護範囲内に維持しない使用モードとを択一的に切り換えて前記充放電部を制御し、さらに、前記保護モードにおいて、前記保護範囲の上限を上回っている蓄電池から、前記保護範囲の下限を下回っている蓄電池へ放電させるように前記充放電部を制御することを特徴とする。 Battery control system of the present invention, organic and multiple battery, charging and discharging of several to charge to and discharge the storage battery, and a control unit for controlling the charging operation and the discharging operation of the discharge portion to each other The control unit selectively switches between a protection mode for maintaining the charge level of the storage battery within a predetermined protection range and a use mode for not maintaining the charge level within the protection range. And in the protection mode, the charging / discharging unit is controlled to discharge from a storage battery that is above the upper limit of the protection range to a storage battery that is below the lower limit of the protection range. .

この蓄電池制御システムにおいて、前記制御部に対して、前記使用モードから前記保護モードへの切換のためのトリガを与えるトリガ手段を有することが好ましい。   In this storage battery control system, it is preferable that the control unit includes trigger means for giving a trigger for switching from the use mode to the protection mode.

この蓄電池制御システムにおいて、前記トリガ手段は、前記蓄電池から給電される負荷機器の利用者が所定期間以上不在であると判断した場合に前記トリガを前記制御部に与えることが好ましい。   In the storage battery control system, it is preferable that the trigger means gives the trigger to the control unit when it is determined that a user of a load device fed from the storage battery is absent for a predetermined period or longer.

この蓄電池制御システムにおいて、前記トリガ手段は、検知領域における人の存否を検知する人感センサを有し、当該人感センサの検知結果に基づいて前記利用者の不在を判断することが好ましい。   In this storage battery control system, it is preferable that the trigger means has a human sensor that detects the presence or absence of a person in the detection area, and determines the absence of the user based on a detection result of the human sensor.

この蓄電池制御システムにおいて、前記トリガ手段は、前記使用モードから前記保護モードへ切り換えるための操作入力を受け付けた場合に前記トリガを前記制御部に与えることが好ましい。   In this storage battery control system, it is preferable that the trigger means gives the trigger to the control unit when an operation input for switching from the use mode to the protection mode is received.

この蓄電池制御システムにおいて、外部と通信する通信手段を有し、前記トリガ手段は、前記通信手段を介して前記使用モードから前記保護モードへ切り換えるための指令を受け取った場合に前記トリガを前記制御部に与えることが好ましい。   The storage battery control system further includes a communication unit that communicates with the outside, and the trigger unit receives the instruction to switch from the use mode to the protection mode via the communication unit. It is preferable to give to.

この蓄電池制御システムにおいて、前記制御部は、動作モードが前記使用モードであり且つ前記蓄電池の充電レベルが前記保護範囲よりも高い所定値以上又は前記保護範囲より低い所定値以下の状態が所定時間以上継続した場合に前記動作モードを前記保護モードに切り換えることが好ましい。 In the battery control system, the control unit, the operating mode is the use mode a is and the battery charge level is the protection higher predetermined value or more or the protective predetermined value for a predetermined time following the state lower than the range than the range of When the operation continues, it is preferable to switch the operation mode to the protection mode.

本発明の蓄電池制御システムは、放置による蓄電池の性能劣化を抑制することができるという効果がある。   The storage battery control system of the present invention has an effect that it is possible to suppress the deterioration of the performance of the storage battery due to neglect.

本発明に係る蓄電池制御システムの実施形態の動作を説明するための説明図である。It is explanatory drawing for demonstrating operation | movement of embodiment of the storage battery control system which concerns on this invention. 本発明に係る蓄電池制御システムの実施形態１を示すシステム構成図である。It is a system configuration figure showing Embodiment 1 of the storage battery control system concerning the present invention. 本発明に係る蓄電池制御システムの実施形態２を示すシステム構成図である。It is a system block diagram which shows Embodiment 2 of the storage battery control system which concerns on this invention.

以下、本発明に係る蓄電池制御システムの実施形態について、図面を参照して詳細に説明する。   Hereinafter, embodiments of a storage battery control system according to the present invention will be described in detail with reference to the drawings.

(実施形態１)
本実施形態のシステム構成図を図２に示す。本実施形態の蓄電池制御システムは、複数(図示は３台のみ)の蓄電装置１と、各蓄電装置１の充放電を制御する制御装置２とを備える。ただし、蓄電装置１の台数は３台に限定されるものではなく、１台又は２台あるいは４台以上であっても構わない。 (Embodiment 1)
FIG. 2 shows a system configuration diagram of the present embodiment. The storage battery control system of the present embodiment includes a plurality (only three in the drawing) of power storage devices 1 and a control device 2 that controls charging / discharging of each power storage device 1. However, the number of power storage devices 1 is not limited to three, and may be one, two, or four or more.

蓄電装置１は、リチウムイオン電池などの蓄電池10と、蓄電池10を充放電する充放電部とを備える。なお、充放電部は、蓄電池10を充電する充電回路部11と、蓄電池10を放電させる放電回路部12とを有する。充電回路部11は、交流を直流に変換するAC/DCコンバータと、交流から変換された直流を所望の電圧の直流に変換するDC/DCコンバータとを有している。放電回路部12は、蓄電池10から放電される直流を所望の電圧の直流に変換するDC/DCコンバータと、所望電圧の直流を交流に変換するDC/ACコンバータ(インバータ)とを有している。これらの蓄電装置１は、系統連系保護装置５を介して商用の交流電力系統(以下、電力系統と略す。)100並びに分電盤４に接続されている。   The power storage device 1 includes a storage battery 10 such as a lithium ion battery, and a charge / discharge unit that charges and discharges the storage battery 10. The charging / discharging unit includes a charging circuit unit 11 that charges the storage battery 10 and a discharging circuit unit 12 that discharges the storage battery 10. The charging circuit unit 11 includes an AC / DC converter that converts alternating current into direct current, and a DC / DC converter that converts direct current converted from alternating current into direct current of a desired voltage. The discharge circuit unit 12 includes a DC / DC converter that converts direct current discharged from the storage battery 10 into direct current of a desired voltage, and a DC / AC converter (inverter) that converts direct current of the desired voltage into alternating current. . These power storage devices 1 are connected to a commercial AC power system (hereinafter abbreviated as a power system) 100 and a distribution board 4 through a grid connection protection device 5.

分電盤４は、一次側に系統連系保護装置５が接続される主幹ブレーカと、主幹ブレーカの２次側に分岐接続される複数の分岐ブレーカとがボックスに収納されて構成される。そして、複数の分岐ブレーカの負荷端子にそれぞれ負荷機器３が接続されている。系統連系保護装置５は、蓄電装置１を電力系統100と系統連系させるとともに蓄電装置１から電力系統100への逆潮流を防止するものである。   The distribution board 4 is configured such that a main breaker to which the grid interconnection protection device 5 is connected on the primary side and a plurality of branch breakers to be branched and connected to the secondary side of the main breaker are housed in a box. And the load apparatus 3 is connected to the load terminal of a some branch breaker, respectively. The grid connection protection device 5 connects the power storage device 1 with the power system 100 and prevents reverse power flow from the power storage device 1 to the power system 100.

制御装置２は、制御部20、操作部21、通信部22などを備える。操作部21は押釦スイッチなどの操作スイッチ(図示せず)を有し、操作スイッチが操作された場合に当該操作スイッチに対応する操作入力を受け付け、当該操作入力に対応する操作信号を制御部20に出力する。通信部22は通信線や電波を通信媒体として通信端末(図示せず)と通信するものである。   The control device 2 includes a control unit 20, an operation unit 21, a communication unit 22, and the like. The operation unit 21 has an operation switch (not shown) such as a push button switch. When the operation switch is operated, the operation unit 21 receives an operation input corresponding to the operation switch and sends an operation signal corresponding to the operation input to the control unit 20. Output to. The communication unit 22 communicates with a communication terminal (not shown) using a communication line or radio wave as a communication medium.

制御部20は、マイクロコンピュータを主構成要素とし、メモリ(図示せず)に記憶されているプログラムをマイクロコンピュータで実行することによって、種々の機能(処理)を実現する。例えば、制御部20は蓄電池10の電池電圧や充放電電流の履歴などに基づいて、各蓄電装置１の蓄電池10の充電レベルを検出する処理を行っており、検出した充電レベルをメモリに保存している。なお、充電レベル(SOC)とは、定格容量に対する残存容量の比率で定義される(日本工業規格JIS C8905参照)。   The control unit 20 has a microcomputer as a main component, and implements various functions (processes) by executing a program stored in a memory (not shown) by the microcomputer. For example, the control unit 20 performs processing for detecting the charge level of the storage battery 10 of each power storage device 1 based on the battery voltage of the storage battery 10 and the history of charge / discharge current, and stores the detected charge level in a memory. ing. The charge level (SOC) is defined by the ratio of the remaining capacity to the rated capacity (see Japanese Industrial Standard JIS C8905).

ここで、制御部20は使用モードと保護モードの２種類の動作モードを有している。使用モードとは蓄電装置１が通常に使用されるときの動作モードであって、使用モードにおける制御部20は、例えば、基本的に深夜料金の時間帯で各蓄電装置１に充電を行わせ、主として昼間の時間帯に各蓄電装置１に放電を行わせる。ただし、蓄電池10が100％の充電レベルまで充電され且つ0％まで放電されることが繰り返されると、蓄電池100の寿命が短縮されてしまう場合がある。故に本実施形態では、図１に示すように充電レベルが上限値(例えば、80％)から下限値(例えば、20％)の範囲(通常使用範囲)内に収まるように、制御部20が各蓄電装置１の充放電部(充電回路部11又は放電回路部12)を制御している。   Here, the control unit 20 has two types of operation modes, a use mode and a protection mode. The use mode is an operation mode when the power storage device 1 is normally used. For example, the control unit 20 in the use mode basically causes each power storage device 1 to charge in the time zone of midnight charge, Each power storage device 1 is discharged mainly during the daytime. However, if the storage battery 10 is repeatedly charged to 100% and discharged to 0%, the life of the storage battery 100 may be shortened. Therefore, in the present embodiment, as shown in FIG. 1, the control unit 20 is configured so that the charge level is within the range (normal use range) from the upper limit value (for example, 80%) to the lower limit value (for example, 20%). The charging / discharging unit (charging circuit unit 11 or discharging circuit unit 12) of power storage device 1 is controlled.

一方、保護モードとは、従来技術で説明したように蓄電池10が長期間放置される場合に蓄電池10の性能劣化を抑えるための動作モードである。そして、保護モードにおける制御部20は、蓄電池10の充電レベルを所定の保護範囲内に維持するように各蓄電装置１の充放電部(充電回路部11又は放電回路部12)を制御する。例えば、本実施形態における蓄電池10はリチウムイオン電池であるので、充電レベルが40％〜60％の範囲が保護範囲に適している。ただし、保護範囲は蓄電池10の種類によって異なっており、リチウムイオン電池以外の蓄電池(ニッケル水素電池や鉛蓄電池など)が使用される場合、蓄電池の種類に応じた範囲に設定される。   On the other hand, the protection mode is an operation mode for suppressing performance deterioration of the storage battery 10 when the storage battery 10 is left for a long period of time as described in the prior art. Then, the control unit 20 in the protection mode controls the charging / discharging unit (the charging circuit unit 11 or the discharging circuit unit 12) of each power storage device 1 so as to maintain the charge level of the storage battery 10 within a predetermined protection range. For example, since the storage battery 10 in the present embodiment is a lithium ion battery, a range where the charge level is 40% to 60% is suitable for the protection range. However, the protection range differs depending on the type of the storage battery 10, and when a storage battery (such as a nickel hydride battery or a lead storage battery) other than the lithium ion battery is used, the protection range is set to a range according to the type of the storage battery.

ここで、蓄電装置１が長期間放置される場合として、本実施形態の蓄電池制御システムが設置されている住戸の住人が旅行などで長期間留守(不在)にする場合などが考えられる。あるいは、災害の発生に伴って住人が自宅から別の場所に避難しなければならない場合も考えられる。本実施形態においては、住人(負荷機器３の利用者)が自宅を不在にする場合に制御装置２の操作部21が有する保護モード切換用の操作スイッチを操作すると、操作部21から制御部20に保護モード切換用の操作信号が出力される。そして、当該操作信号を受け取った制御部20が動作モードを使用モードから保護モードに切り換える(図１における時刻t=t0)。あるいは、住人が携帯する通信端末(図示せず)から保護モード切換用のコマンド(指令)を無線信号で送信し、当該無線信号を受信した通信部22から制御部20に前記保護モード切換用のコマンドが出力される。そして、当該コマンドを受け取った制御部20が動作モードを使用モードから保護モードに切り換える。なお、制御部20の保護モードから使用モードへの切換についても、操作部21から出力される操作信号や通信部22で受信する指令に基づいて行われる。   Here, as a case where the power storage device 1 is left for a long period of time, a case where a resident of a dwelling unit in which the storage battery control system of the present embodiment is installed is away (absent) for a long period of time, for example, during a trip or the like. Alternatively, there may be a case where a resident has to evacuate from his / her home to another place in the event of a disaster. In this embodiment, when a resident (user of the load device 3) is away from home, when the operation switch for protection mode switching of the operation unit 21 of the control device 2 is operated, the operation unit 21 controls the control unit 20. The operation signal for switching the protection mode is output at the same time. Then, the control unit 20 that has received the operation signal switches the operation mode from the use mode to the protection mode (time t = t0 in FIG. 1). Alternatively, a protection mode switching command (command) is transmitted as a radio signal from a communication terminal (not shown) carried by a resident, and the protection mode switching command is transmitted from the communication unit 22 that has received the radio signal to the control unit 20. The command is output. Then, the control unit 20 that has received the command switches the operation mode from the use mode to the protection mode. Note that switching from the protection mode to the use mode of the control unit 20 is also performed based on an operation signal output from the operation unit 21 or a command received by the communication unit 22.

保護モードに切り換わった制御部20は、蓄電池10の充電レベルが保護範囲の下限を下回ると充電回路部11に充電を行わせ、反対に蓄電池10の充電レベルが保護範囲の上限を上回ると放電回路部12に放電を行わせる。これにより、蓄電池10の充電レベルを保護範囲内に維持することができる。ここで、本実施形態のように蓄電装置１が複数ある場合、制御部20は、蓄電池10の充電レベルが保護範囲の上限を上回っている蓄電装置１から、蓄電池10の充電レベルが保護範囲の下限を下回っている他の蓄電装置１へ放電させることが好ましい。このようにすれば、一旦蓄電池10に充電された電力が充電レベルを維持する目的のためだけに無駄に消費されることが回避できる。   The control unit 20 that has switched to the protection mode causes the charging circuit unit 11 to charge when the charge level of the storage battery 10 falls below the lower limit of the protection range, and on the contrary, discharges when the charge level of the storage battery 10 exceeds the upper limit of the protection range. The circuit unit 12 is discharged. Thereby, the charge level of the storage battery 10 can be maintained within the protection range. Here, when there are a plurality of power storage devices 1 as in the present embodiment, the control unit 20 determines that the charge level of the storage battery 10 is within the protection range from the power storage device 1 in which the charge level of the storage battery 10 exceeds the upper limit of the protection range. It is preferable to discharge to another power storage device 1 that is below the lower limit. In this way, it is possible to avoid wasteful consumption of the power once charged in the storage battery 10 only for the purpose of maintaining the charge level.

ところで、上述のように住人が操作部21の操作を忘れて不在にした場合、制御部20の動作モードが使用モードから保護モードに切り換わらずに蓄電池10の性能が劣化してしまう可能性がある。そこで、住宅内の人の存否を人感センサ(図示せず)で検知し、人感センサが住宅内の人の存在を検知しない時間が所定時間(例えば、24時間)を超えたら、制御部20が住人の不在と判断して自発的に使用モードから保護モードに動作モードを切り換えることが好ましい。あるいは、使用頻度の高い負荷機器３、例えば、照明器具の消費電力がほぼゼロとなる時間が所定時間(例えば、24時間)を超えたら、制御部20が住人の不在と判断して自発的に使用モードから保護モードに動作モードを切り換えてもよい。   By the way, when the resident forgets to operate the operation unit 21 as described above, the operation mode of the control unit 20 may not be switched from the use mode to the protection mode, and the performance of the storage battery 10 may be deteriorated. is there. Therefore, the presence or absence of a person in the house is detected by a human sensor (not shown), and if the human sensor does not detect the presence of a person in the house exceeds a predetermined time (for example, 24 hours), the control unit It is preferable that the operation mode is switched from the use mode to the protection mode voluntarily by judging that the resident 20 is absent. Alternatively, when the time when the power consumption of the frequently used load device 3, for example, the lighting equipment becomes almost zero exceeds a predetermined time (for example, 24 hours), the control unit 20 determines that the resident is absent and voluntarily The operation mode may be switched from the use mode to the protection mode.

また、住人の在・不在に関わらず、制御部20の動作モードが使用モードであり且つ蓄電池10の充電レベルが保護範囲よりも相対的に高い状態又は低い状態が継続した場合にも蓄電池10の性能が劣化してしまう可能性がある。そこで、制御部20の動作モードが使用モードであり且つ蓄電池10の充電レベルが保護範囲よりも高い所定値(例えば、80％)以上又は保護範囲よりも低い所定値(例えば、20％)以下の状態が所定時間(例えば、１週間)以上継続したら、制御部20が自発的に保護モードに切り換えることが好ましい。   In addition, regardless of the presence or absence of a resident, the operation mode of the control unit 20 is the use mode, and the storage battery 10 is also in a state where the charge level of the storage battery 10 is relatively higher or lower than the protection range. Performance may be degraded. Therefore, the operation mode of the control unit 20 is the use mode, and the charge level of the storage battery 10 is not less than a predetermined value (for example, 80%) higher than the protection range or lower than the predetermined value (for example, 20%) lower than the protection range. When the state continues for a predetermined time (for example, one week) or more, it is preferable that the control unit 20 spontaneously switches to the protection mode.

(実施形態２)
本実施形態のシステム構成図を図３に示す。ただし、本実施形態の基本構成は実施形態１と共通であるから、実施形態１と共通の構成要素には同一の符号を付して説明を省略する。 (Embodiment 2)
FIG. 3 shows a system configuration diagram of the present embodiment. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

本実施形態においては、太陽電池６とパワーコンディショナ７からなる太陽光発電システムが追加されている。太陽電池６の発電電力(直流電力)がパワーコンディショナ７で交流電力に変換され、系統連系保護装置５を介して蓄電装置１や負荷機器３に供給される。   In the present embodiment, a solar power generation system including a solar cell 6 and a power conditioner 7 is added. The power generated by the solar cell 6 (DC power) is converted into AC power by the power conditioner 7 and supplied to the power storage device 1 and the load device 3 via the grid connection protection device 5.

また、負荷機器３として、電気温水器やヒートポンプ給湯機のように電力を利用して給湯する給湯機30と、給湯機30から供給される湯を貯める貯湯槽31とを有する給湯設備が設置されている。   Further, as the load device 3, a hot water supply facility having a hot water heater 30 for supplying hot water using electric power and a hot water storage tank 31 for storing hot water supplied from the hot water heater 30 is installed, such as an electric water heater or a heat pump water heater. ing.

而して、保護モードに切り換わった制御部20は、蓄電池10の充電レベルが保護範囲の下限を下回ると充電回路部11に充電を行わせ、太陽光発電システムで発電される電力又は電力系統100から供給される電力によって蓄電池10を充電する。一方、蓄電池10の充電レベルが保護範囲の上限を上回ると、制御部20は放電回路部12に放電を行わせる。このとき、蓄電装置１から放電される電力を給湯設備３に供給し、給湯機30で沸かした湯を貯湯槽31に貯めるようにすれは、電気エネルギーを熱エネルギーに変換して保存することができる。このようにすれば、一旦蓄電池10に充電された電力が充電レベルを維持する目的のためだけに無駄に消費されることが回避できる。なお、電気自動車を負荷機器３とし、保護モードにおいて蓄電池10の充電レベルが保護範囲の上限を上回った場合に蓄電池10から放電される電力で電気自動車のバッテリを充電するようにしても構わない。   Thus, the control unit 20 switched to the protection mode causes the charging circuit unit 11 to charge when the charge level of the storage battery 10 falls below the lower limit of the protection range, and the electric power or power system generated by the photovoltaic power generation system The storage battery 10 is charged with the power supplied from 100. On the other hand, when the charge level of the storage battery 10 exceeds the upper limit of the protection range, the control unit 20 causes the discharge circuit unit 12 to discharge. At this time, if the electric power discharged from the power storage device 1 is supplied to the hot water supply facility 3 and the hot water boiled by the hot water heater 30 is stored in the hot water storage tank 31, the electric energy can be converted into thermal energy and stored. it can. In this way, it is possible to avoid wasteful consumption of the power once charged in the storage battery 10 only for the purpose of maintaining the charge level. Note that the electric vehicle may be the load device 3 and the battery of the electric vehicle may be charged with the electric power discharged from the storage battery 10 when the charge level of the storage battery 10 exceeds the upper limit of the protection range in the protection mode.

１ 蓄電装置
２ 制御装置
10 蓄電池
11 充電回路部(充放電部)
12 放電回路部(充放電部)
20 制御部 1 power storage device 2 control device
10 Storage battery
11 Charging circuit (charge / discharge section)
12 Discharge circuit section (charge / discharge section)
20 Control unit

Claims (7)

複数の蓄電池と、当該蓄電池を充電し且つ放電させる複数の充放電部と、当該充放電部の充電動作及び放電動作を各別に制御する制御部とを有し、当該制御部は、前記蓄電池の充電レベルを所定の保護範囲内に維持する保護モードと、前記充電レベルを前記保護範囲内に維持しない使用モードとを択一的に切り換えて前記充放電部を制御し、さらに、前記保護モードにおいて、前記保護範囲の上限を上回っている蓄電池から、前記保護範囲の下限を下回っている蓄電池へ放電させるように前記充放電部を制御することを特徴とする蓄電池制御システム。 Has a multiple of the battery, the charging and discharging of several to charge to and discharge the storage battery, and a control unit for controlling the charging operation and the discharging operation of the discharge portion to each other, the control unit, the The charge / discharge unit is controlled by selectively switching between a protection mode for maintaining the charge level of the storage battery within a predetermined protection range and a use mode for not maintaining the charge level within the protection range, and further, the protection In the mode, the storage battery control system controls the charging / discharging unit so as to discharge from a storage battery exceeding the upper limit of the protection range to a storage battery falling below the lower limit of the protection range . 前記制御部に対して、前記使用モードから前記保護モードへの切換のためのトリガを与えるトリガ手段を有することを特徴とする請求項１記載の蓄電池制御システム。   The storage battery control system according to claim 1, further comprising a trigger unit that gives a trigger for switching from the use mode to the protection mode to the control unit. 前記トリガ手段は、前記蓄電池から給電される負荷機器の利用者が所定期間以上不在であると判断した場合に前記トリガを前記制御部に与えることを特徴とする請求項２記載の蓄電池制御システム。   3. The storage battery control system according to claim 2, wherein the trigger means gives the trigger to the control unit when it is determined that a user of a load device fed from the storage battery is absent for a predetermined period or longer. 前記トリガ手段は、検知領域における人の存否を検知する人感センサを有し、当該人感センサの検知結果に基づいて前記利用者の不在を判断することを特徴とする請求項３記載の蓄電池制御システム。   4. The storage battery according to claim 3, wherein the trigger means includes a human sensor that detects the presence or absence of a person in a detection area, and determines the absence of the user based on a detection result of the human sensor. Control system. 前記トリガ手段は、前記使用モードから前記保護モードへ切り換えるための操作入力を受け付けた場合に前記トリガを前記制御部に与えることを特徴とする請求項２記載の蓄電池制御システム。   The storage battery control system according to claim 2, wherein the trigger means gives the trigger to the control unit when an operation input for switching from the use mode to the protection mode is received. 外部と通信する通信手段を有し、前記トリガ手段は、前記通信手段を介して前記使用モードから前記保護モードへ切り換えるための指令を受け取った場合に前記トリガを前記制御部に与えることを特徴とする請求項２記載の蓄電池制御システム。   Communication means for communicating with the outside, wherein the trigger means gives the trigger to the control unit when receiving an instruction to switch from the use mode to the protection mode via the communication means. The storage battery control system according to claim 2. 前記制御部は、動作モードが前記使用モードであり且つ前記蓄電池の充電レベルが前記保護範囲よりも高い所定値以上又は前記保護範囲より低い所定値以下の状態が所定時間以上継続した場合に前記動作モードを前記保護モードに切り換えることを特徴とする請求項１記載の蓄電池制御システム。 Wherein, the when the operation mode is the a use mode and charge level is less than a predetermined value lower than a higher predetermined value or more or the scope of protection than the scope state of the storage battery continues for a predetermined time or longer The storage battery control system according to claim 1 , wherein an operation mode is switched to the protection mode.
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