JP2011200012A - Secondary battery charging/discharging system and mobile apparatus provided with the same - Google Patents

Secondary battery charging/discharging system and mobile apparatus provided with the same Download PDF

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JP2011200012A
JP2011200012A JP2010063652A JP2010063652A JP2011200012A JP 2011200012 A JP2011200012 A JP 2011200012A JP 2010063652 A JP2010063652 A JP 2010063652A JP 2010063652 A JP2010063652 A JP 2010063652A JP 2011200012 A JP2011200012 A JP 2011200012A
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power
secondary battery
power source
charged
converter
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Hidehiko Sugimoto
英彦 杉本
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Tabuchi Electric Co Ltd
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Tabuchi Electric 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To economically charge a secondary battery provided to an electric vehicle or a plug-in hybrid vehicle, or the like, and to economically use a surplus charging power.SOLUTION: The secondary battery charging/discharging system includes a bidirectional power converter 8, provided between a commercial power supply 1 and a secondary battery 11, and a control device 9 uses the commercial power supply to perform charge control of the secondary battery 11 during a night power time zone, when a low power rate is provided; and when a vehicle 10 stays at a garage or the like and has a surplus charging power of the secondary battery 11, the surplus power of the secondary battery 11 is designed to be used by a load.

Description

本発明は、移動体に搭載の二次電池に対して充放電を行うためのシステムおよび該移動体に関するものである。   The present invention relates to a system for charging / discharging a secondary battery mounted on a moving body and the moving body.

特許文献１には、移動体である電動車両は、様々な事業所や家庭に広く普及することが予想され、このような電動車両の動力源であるバッテリとしては、リチウムイオン電池や、ニッケル水素電池、鉛電池等の二次電池が利用されるのが通常であると、開示されている。   In Patent Document 1, it is expected that an electric vehicle as a moving body will be widely used in various offices and homes. As a battery as a power source of such an electric vehicle, a lithium ion battery, a nickel metal hydride battery, or the like is used. It is disclosed that secondary batteries such as batteries and lead batteries are usually used.

さらに、同特許文献１には、リチウムイオン電池等の二次電池は、軽量で高容量、高出力であるため、上記のような電動車両のバッテリとして注目されていると共に、上記のような電動車両の二次電池の充電作業は、料金単価の安い深夜電力時間帯において実行されるのが通常であると、開示されている。   Furthermore, in Patent Document 1, a secondary battery such as a lithium ion battery is light, has a high capacity, and has a high output. It is disclosed that the charging operation of the secondary battery of the vehicle is usually performed in the late-night power hours where the unit price is low.

特開２００９−２５４２２１号公報JP 2009-254221 A

ところで、上記した二次電池の充電電力量は、１０数ｋＷｈないし数１０ｋＷｈであるが、上記電動車両ではそのように二次電池に充電された電力の全てを使用し尽くさない場合があると予想される。   By the way, the charging power amount of the secondary battery described above is several tens of kWh to several tens of kWh, but it is expected that the electric vehicle may not use up all of the power charged in the secondary battery. Is done.

一方、家庭内負荷で１日に使用する電力量は１０ｋＷｈ程度であり、これは上記二次電池の充電電力量以下である。   On the other hand, the amount of electric power used per day at home load is about 10 kWh, which is less than the amount of electric power charged in the secondary battery.

本発明は、動力源として上記二次電池を備えた電動車両等の移動体において、二次電池の蓄積電力を例えば家庭内の負荷等で有効に利用できようにすることを解決すべき課題としている。   As a problem to be solved by the present invention, in a moving body such as an electric vehicle equipped with the secondary battery as a power source, the stored power of the secondary battery can be effectively used, for example, in a household load. Yes.

本発明による充放電システムは、移動体にその動力源として搭載された二次電池に対して双方向性電力変換器を介して電力源から充電制御し、余剰電力が充電されているときは該余剰電力を上記双方向性電力変換器を介して負荷に放電制御できるようにしたことを特徴とする。   The charging / discharging system according to the present invention controls charging from a power source via a bidirectional power converter to a secondary battery mounted as a power source on a moving body, and when surplus power is charged, The surplus power can be controlled to be discharged to the load via the bidirectional power converter.

上記移動体には車両を含むことができる。この車両としては、その動力源の全部あるいは一部に電池による電気エネルギを使用している車両であれば良く、例えば、電気自動車、ハイブリッド自動車、プラグインハイブリッド自動車、ハイブリッド鉄道車両、フォークリフト、電気車いす、電動アシスト自転車、電動スクータが挙げられる。   The moving body can include a vehicle. The vehicle may be a vehicle that uses electric energy from a battery for all or a part of its power source. For example, an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, a hybrid railway vehicle, a forklift, an electric wheelchair , Electric assist bicycles and electric scooters.

上記電力源は、商用電源でもよいし、また、商用電源を直流に変換した直流電源でもよい。また、前記電力源は、太陽光発電装置や風力発電装置等の分散型電源が接続された商用電源でもよい。   The power source may be a commercial power source or a DC power source obtained by converting the commercial power source into a direct current. The power source may be a commercial power source to which a distributed power source such as a solar power generator or a wind power generator is connected.

上記電力源は商用電源であれば、商用電源から安価に電力が提供される夜間電力時間帯において当該商用電源から二次電池に充電するようにしてもよい。さらに、太陽光発電装置や燃料電池等の分散型電源中直流部でもよい。   If the power source is a commercial power source, the secondary battery may be charged from the commercial power source during the night power hours when power is provided at low cost from the commercial power source. Further, it may be a direct current section in a distributed power source such as a solar power generation device or a fuel cell.

上記電力源が直流である場合、電力源と二次電池との間に双方向性電力変換器を介在させ、二次電池に充電するときはその電力変換器により二次電池に充電制御し、二次電池から放電するときはその電力変換器により該二次電池の直流電力を変換した電力を直流のままあるいは交流に変換して負荷に供給できるようにしてもよい。   When the power source is a direct current, a bidirectional power converter is interposed between the power source and the secondary battery, and when charging the secondary battery, charge control is performed on the secondary battery by the power converter, When discharging from the secondary battery, the power converted from the DC power of the secondary battery by the power converter may be supplied to the load as DC or converted to AC.

本発明による電動車両等の移動体は、動力源またはその一部として二次電池が搭載された電動車両等の移動体であって、上記移動体は、電力源の交流電力を直流電力に変換して上記二次電池に充電する一方、上記二次電池に蓄積の直流電力を交流電力に変換するあるいは別の直流電力に変換する双方向性電力変換器と、あるいは任意の直流電力を別の直流電力に変換して上記二次電池に対して上記双方向性電力変換器を介して上記電力源から充電制御し、かつ、上記二次電池に余剰電力が充電されているときは該余剰電力を上記双方向性電力変換器を介して負荷に放電制御する制御装置とを搭載したことを特徴とする。   A moving body such as an electric vehicle according to the present invention is a moving body such as an electric vehicle on which a secondary battery is mounted as a power source or a part thereof, and the moving body converts AC power of the power source into DC power. The secondary battery is charged while the DC power stored in the secondary battery is converted into AC power or converted into another DC power, or any DC power is converted into another DC power. When the secondary battery is controlled to be charged from the power source through the bidirectional power converter by converting to DC power and the secondary battery is charged with surplus power, the surplus power And a control device that controls discharge to a load via the bidirectional power converter.

この移動体は、その動力源の全部あるいは一部に電池による電気エネルギを使用している車両であれば良く、例えば、電気自動車、ハイブリッド自動車、プラグインハイブリッド自動車、ハイブリッド鉄道車両、フォークリフト、電気車いす、電動アシスト自転車、電動スクータが挙げられる。   The moving body may be a vehicle that uses electric energy from a battery for all or a part of its power source, such as an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, a hybrid railway vehicle, a forklift, an electric wheelchair. , Electric assist bicycles and electric scooters.

本発明のシステムによれば、移動体が例えば動力源に二次電池を用いる電気自動車やプラグインハイブリッド自動車等の自動車であれば、当該二次電池に電力源から充電させる一方、これら自動車が車庫等に入っていて二次電池に電力が余っているようなとき、その二次電池の充電電力を例えば家庭内負荷に放電させて利用することができるのできわめて経済的なシステムである。   According to the system of the present invention, if the moving body is an automobile such as an electric vehicle or a plug-in hybrid vehicle using a secondary battery as a power source, for example, the secondary battery is charged from the power source, while these vehicles are stored in the garage. When the secondary battery is charged with excess power, the charging power of the secondary battery can be used, for example, by discharging it to a household load, which is an extremely economical system.

図１は本発明の実施の形態にかかる二次電池の充放電システムの構成を示す図である。FIG. 1 is a diagram showing a configuration of a charge / discharge system for a secondary battery according to an embodiment of the present invention. 図２は本発明の実施の形態にかかる二次電池の充放電システムの構成を示す図である。FIG. 2 is a diagram showing a configuration of a charge / discharge system for a secondary battery according to an embodiment of the present invention.

以下、添付した図面を参照して、本発明の実施の形態に係る自動車等の移動体に搭載している二次電池の充放電システムを説明する。   Hereinafter, a charging / discharging system for a secondary battery mounted on a moving body such as an automobile according to an embodiment of the present invention will be described with reference to the accompanying drawings.

図１を参照して本実施の形態にかかる同充放電システムを説明する。図１において、１は商用電源等の交流電源、２は電力変換器、３は直流負荷、４は交流負荷、５は制御装置、６は双方向性の電力変換器、７は一対の充放電端子（コンセント、プラグ）７ａ，７ｂを含む充放電接続装置（コンセント／プラグ装置）である。８は動力源の全部あるいは一部に二次電池を使用している電気自動車等の自動車、９は自動車８搭載の二次電池、１０は自動車８搭載で二次電池９の電力蓄積状態等の電池情報部である。直流負荷３や交流負荷４は家庭や事業所やその他における負荷である。双方向性の電力変換器６は周知のものを用いることができ、特にその構成の説明は略する。   The charge / discharge system according to the present embodiment will be described with reference to FIG. In FIG. 1, 1 is an AC power source such as a commercial power source, 2 is a power converter, 3 is a DC load, 4 is an AC load, 5 is a control device, 6 is a bidirectional power converter, and 7 is a pair of charge and discharge. A charge / discharge connection device (outlet / plug device) including terminals (outlet, plug) 7a, 7b. 8 is an automobile such as an electric vehicle using a secondary battery as a whole or a part of the power source, 9 is a secondary battery mounted on the automobile 8, 10 is an automobile 8 mounted and the power storage state of the secondary battery 9 is It is a battery information part. The DC load 3 and the AC load 4 are loads at homes, offices and others. As the bidirectional power converter 6, a well-known one can be used, and in particular, the description of the configuration is omitted.

充放電接続装置７における充放電接続形態は特に限定しないものであり、実施の形態では説明の都合で一対の充放電端子７ａ，７ｂで構成し、かつ、ユーザー操作により接続が行われるようになっている。   The charging / discharging connection mode in the charging / discharging connection device 7 is not particularly limited. In the embodiment, for the sake of explanation, the charging / discharging connection device 7 is constituted by a pair of charging / discharging terminals 7a and 7b and is connected by a user operation. ing.

（二次電池９への充電モード）
ユーザーは二次電池９に充放電させるときは充放電接続装置７の両端子７ａ、７ｂを接続する。 (Charging mode for secondary battery 9)
When charging / discharging the secondary battery 9, the user connects both terminals 7a, 7b of the charge / discharge connection device 7.

ユーザーは、制御装置５の図示略の充電ボタンを操作して制御装置５に対して、充放電制御させる。また、ユーザーが商用電源１の電力を用いて二次電池９に充電する場合では、夜間電力時間帯には安価に商用電源１側から電力が提供されるので、制御装置５はユーザーからの充電ボタンの操作後にタイマ制御により夜間電力時間帯になると二次電池９に充電が行われるよう制御する。   The user operates a charging button (not shown) of the control device 5 to cause the control device 5 to perform charge / discharge control. Further, when the user charges the secondary battery 9 using the power of the commercial power source 1, the power is provided from the commercial power source 1 at a low cost during the night power hours, so that the control device 5 is charged by the user. Control is performed so that the secondary battery 9 is charged when the night power time period is reached by timer control after the button is operated.

もちろん、このような制御はユーザーにより設定されまた選択できるようにしてもよい。   Of course, such control may be set and selected by the user.

例えば夜間電力時間帯以外に早急に二次電池９に充電させて自動車８を使用したい場合があるからである。   This is because, for example, there is a case where it is desired to charge the secondary battery 9 and use the automobile 8 as soon as possible outside the night power hours.

制御装置５は、商用電源１の電力を夜間電力時間帯に充電するような制御に設定されている場合では、夜間電力時間帯が到来すると、電池情報部１０からの情報を取り込む。   In the case where the control device 5 is set to control such that the power of the commercial power supply 1 is charged in the night power hours, the information from the battery information unit 10 is taken in when the night power hours are reached.

制御装置５は、上記取り込んだ電池情報から二次電池９に電力の蓄積が少なくなっていて、充電が必要と判断すれば、電力変換器６を制御し、この電力変換器６で商用電源１の交流電力を直流電力に変換すると共に、その変換した直流電力を二次電池９に充電させる。   The control device 5 controls the power converter 6 when it is determined that charging of the secondary battery 9 is reduced and charging is necessary based on the captured battery information, and the commercial power source 1 is controlled by the power converter 6. The AC power is converted into DC power, and the converted DC power is charged in the secondary battery 9.

なお、夜間電力時間帯以外の時間帯でもユーザ操作により充電させる制御としてもよい。   In addition, it is good also as control made to charge by user operation also in time slots other than a night electric power time slot | zone.

（二次電池９からの放電モード）
二次電池９から電力を放電させその電力を利用する場合としては自動車８を車庫等に収納して使用しない状態がある。制御装置５は、充放電接続部７の両接続端子７ａ，７ｂが接続された状態で、ユーザーが制御装置５内の図示略の放電ボタンを操作するなどして二次電池９の余剰蓄積電力利用のための制御入力があれば、電池情報部１０からの情報を取り込む。 (Discharge mode from secondary battery 9)
As a case where electric power is discharged from the secondary battery 9 and the electric power is used, there is a state where the automobile 8 is not used by being housed in a garage or the like. The control device 5 is configured so that the user can operate a discharge button (not shown) in the control device 5 while the both connection terminals 7a and 7b of the charge / discharge connection portion 7 are connected. If there is a control input for use, the information from the battery information unit 10 is captured.

そして制御装置５は、その電池情報から二次電池９に電力が余剰に蓄積されていると判断すれば、自動的に、電力変換器６を制御して、二次電池９の充電電力を交流電力に変換し、その変換した交流電力を交流負荷４や、電力変換器２を介して直流負荷３に供給する。   If the control device 5 determines from the battery information that excessive power is stored in the secondary battery 9, the control device 5 automatically controls the power converter 6 to change the charging power of the secondary battery 9 to AC. The power is converted into electric power, and the converted AC power is supplied to the DC load 3 via the AC load 4 and the power converter 2.

また、この場合、制御装置５は上記判断を行うと、そのことを表示器等に表示してユーザーに知らせるようにし、その表示を確認したユーザーからの制御入力を待って、電力変換器６を制御するようにしてもよい。   Further, in this case, when the control device 5 makes the above determination, the control device 5 displays the fact on a display device or the like to inform the user, waits for a control input from the user who confirmed the display, and turns the power converter 6 on. You may make it control.

以上からこの実施の形態では、二次電池９に電力の蓄積が少なくなったときは、好ましくは夜間電力時間帯に電力を二次電池９に充電させることができるようにする一方、二次電池９に余剰に電力が蓄積されているときはその余剰の蓄積電力を直流負荷３や交流負荷４で利用することができるようにしている。   From the above, in this embodiment, when the accumulation of power in the secondary battery 9 is reduced, the secondary battery 9 can be charged with power preferably during the nighttime power hours, while the secondary battery 9 When surplus power is stored in 9, the surplus stored power can be used by the DC load 3 or the AC load 4.

また、実施の形態では、自動車は例えば電気自動車やプラグインハイブリッド自動車等の自動車であり、これら自動車に搭載された二次電池に電力を充電させる一方、これら自動車が車庫等に入っていて二次電池に電力が余っているときでは、その二次電池の充電電力を家庭内が消費される負荷である交流負荷や直流負荷に放電させて利用させることができる。なお、二次電池搭載は自動車に限定されず、移動体であればよい。   Further, in the embodiment, the automobile is an automobile such as an electric vehicle or a plug-in hybrid vehicle, and the secondary battery mounted on the automobile is charged with power, while the automobile is in a garage or the like and is secondary. When there is surplus power in the battery, the charging power of the secondary battery can be discharged and used for an AC load or a DC load that is a load consumed in the home. Note that the mounting of the secondary battery is not limited to an automobile, and any mobile body may be used.

以上から本実施の形態では、移動体が例えば電気自動車やプラグインハイブリッド自動車等の自動車であれば、これら自動車に搭載された二次電池に電力を充電させる一方、これら自動車が車庫等に入って停車していて二次電池に電力が余っているときでは、その二次電池の充電電力を家庭内消費負荷に放電させて利用させることができる。   From the above, in the present embodiment, if the moving body is an automobile such as an electric vehicle or a plug-in hybrid vehicle, the secondary battery mounted on these vehicles is charged with power, while these vehicles enter the garage or the like. When the vehicle is stopped and there is surplus power in the secondary battery, the charging power of the secondary battery can be discharged to the household consumption load and used.

図２を参照して本発明の実施形態に係る二次電池の充放電システムの構成を示す図である。図２では、自動車８に二次電池９、電池情報部１０以外に、双方向性電力変換器６、制御装置５を搭載している。また、電力変換器１１を介して分散型電源装置１２を商用電源１に接続している。分散型電源装置１２は太陽電池１３とＤＣ／ＤＣコンバータ１４とを含む。この場合の電力変換器１１は分散型電源装置１２の直流電力を交流電力に変換することができるものであればよい。また、分散型電源装置１２は太陽電池に限定されるものではない。さらに、分散型電源装置１２の電力は、電力変換器１１ではなく、電力変換器２により変換してもよい。この場合は、電力変換器１１を省略することができると共に電力変換器２は双方向性電力変換器により構成する。なお、分散型電源装置１２は電力変換器１１までを含めて分散型電源装置とすることができ、その形態は図示に限定されない。   It is a figure which shows the structure of the charging / discharging system of the secondary battery which concerns on embodiment of this invention with reference to FIG. In FIG. 2, in addition to the secondary battery 9 and the battery information unit 10, the bidirectional power converter 6 and the control device 5 are mounted on the automobile 8. Further, the distributed power supply device 12 is connected to the commercial power supply 1 via the power converter 11. The distributed power supply device 12 includes a solar cell 13 and a DC / DC converter 14. The power converter 11 in this case only needs to be capable of converting the DC power of the distributed power supply device 12 into AC power. Further, the distributed power supply device 12 is not limited to a solar battery. Further, the power of the distributed power supply device 12 may be converted by the power converter 2 instead of the power converter 11. In this case, the power converter 11 can be omitted and the power converter 2 is configured by a bidirectional power converter. Note that the distributed power supply device 12 including the power converter 11 can be a distributed power supply device, and the form thereof is not limited to the illustration.

本実施の形態のシステムでは、商用電源１または分散型電源装置１２からの電力を二次電池９に充電させることができるようにすると共に、実施の形態１とは異なって、自動車８に双方向性電力変換器６と制御装置５とを搭載すると共に自動車８側に充放電接続装置７のプラグ７ｂをケーブル７ｃを介して双方向性電力変換器６に接続した構成としたから、充放電接続装置７のプラグ７ｂをコンセント７ａに接続し、制御装置５を制御操作することで二次電池９に対しての充放電を行うことができるようになる。   In the system of the present embodiment, the secondary battery 9 can be charged with the electric power from the commercial power source 1 or the distributed power supply device 12 and, unlike the first embodiment, the vehicle 8 is bidirectional. Since the directional power converter 6 and the control device 5 are mounted and the plug 7b of the charge / discharge connection device 7 is connected to the bidirectional power converter 6 via the cable 7c on the automobile 8 side, the charge / discharge connection is made. The secondary battery 9 can be charged / discharged by connecting the plug 7b of the device 7 to the outlet 7a and controlling the control device 5.

その結果、本実施の形態では、自動車８外に二次電池９の大掛かりな充電設備が不要化し、また、自動車８は外部における充放電接続装置７のコンセント７ａにプラグ７ｂを接続するだけで商用電源１から二次電池９に充電させることができるようになり、自動車８の二次電池９への充電がより便利となる。   As a result, in the present embodiment, a large-scale charging facility for the secondary battery 9 is not required outside the automobile 8, and the automobile 8 can be commercialized by simply connecting the plug 7b to the outlet 7a of the external charging / discharging connection device 7. The secondary battery 9 can be charged from the power source 1, and charging of the secondary battery 9 of the automobile 8 becomes more convenient.

１ 商用電源
２ 電力変換器
３ 直流負荷
４ 交流負荷
５ 制御装置
６ 双方向性電力変換器
７ 充放電接続装置（コンセント７ａ、プラグ７ｂ）
８ 自動車
９ 二次電池
１０ 電池情報部
１２ 分散型電源装置 DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 Power converter 3 DC load 4 AC load 5 Control apparatus 6 Bidirectional power converter 7 Charging / discharging connection apparatus (outlet 7a, plug 7b)
8 Automobile 9 Secondary battery 10 Battery information unit 12 Distributed power supply

Claims (6)

移動体にその動力源として搭載された二次電池に対して双方向性電力変換器を介して電力源から充電制御し、余剰電力が充電されているときは該余剰電力を上記双方向性電力変換器を介して負荷に放電制御できるようにした、ことを特徴とする、二次電池に対する充放電システム。   The secondary battery mounted as a power source on the moving body is charged from the power source via the bidirectional power converter, and when the surplus power is charged, the surplus power is converted to the bidirectional power. A charge / discharge system for a secondary battery, characterized in that discharge control can be performed on a load via a converter. 上記移動体が、その動力源に二次電池を使用している車両である、ことを特徴とする請求項１に記載のシステム。   The system according to claim 1, wherein the moving body is a vehicle using a secondary battery as a power source. 上記電力源が、商用電源または商用電源の交流電力を直流電力に変換した直流電源である、ことを特徴とする請求項１または２に記載のシステム。   The system according to claim 1, wherein the power source is a commercial power source or a DC power source obtained by converting AC power of the commercial power source into DC power. 上記電力源が、分散型電源装置が接続された商用電源である、ことを特徴とする請求項１または２に記載のシステム。   The system according to claim 1, wherein the power source is a commercial power source to which a distributed power supply device is connected. 上記電力源が、商用電源であり、
該商用電源からは安価に電力が提供される夜間電力時間帯において二次電池に充電するようにした、ことを特徴とする請求項１または２に記載のシステム。 The power source is a commercial power source,
The system according to claim 1, wherein the secondary battery is charged in a nighttime power period in which power is supplied from the commercial power source at a low cost. 動力源またはその一部として二次電池が搭載された電動車両等の移動体であって、
上記移動体は、
電力源の交流電力を直流電力に変換して上記二次電池に充電する一方、上記二次電池に蓄積の直流電力を交流電力に変換する双方向性電力変換器と、
上記二次電池に対して上記双方向性電力変換器を介して上記電力源から充電制御し、かつ、上記二次電池に余剰電力が充電されているときは該余剰電力を上記双方向性電力変換器を介して負荷に放電制御する制御装置と、
を搭載した、ことを特徴とする移動体。 A moving body such as an electric vehicle equipped with a secondary battery as a power source or a part thereof,
The moving body is
A bidirectional power converter that converts AC power of a power source into DC power and charges the secondary battery, while converting DC power stored in the secondary battery into AC power;
The secondary battery is charged from the power source via the bidirectional power converter, and when the secondary battery is charged with surplus power, the surplus power is converted to the bidirectional power. A control device for controlling discharge to a load via a converter;
A mobile object characterized by that.
JP2010063652A 2010-03-19 2010-03-19 Secondary battery charging/discharging system and mobile apparatus provided with the same Pending JP2011200012A (en)

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