JP2011188601A - Charging system of secondary battery mounted to moving body, and electric vehicle - Google Patents

Charging system of secondary battery mounted to moving body, and electric vehicle Download PDF

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JP2011188601A
JP2011188601A JP2010050098A JP2010050098A JP2011188601A JP 2011188601 A JP2011188601 A JP 2011188601A JP 2010050098 A JP2010050098 A JP 2010050098A JP 2010050098 A JP2010050098 A JP 2010050098A JP 2011188601 A JP2011188601 A JP 2011188601A
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secondary battery
charging
power converter
operation unit
bidirectional power
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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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Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a device dedicated to the charging of a secondary battery, to reduce cost for purchasing the device dedicated to the charging, and to save a space for installing the device. <P>SOLUTION: This charging system includes the secondary battery 1, a bidirectional power converter 2 connected to the secondary battery 1, and a motor generator 4 connected to the bidirectional power converter 2. The bidirectional power converter 2 is separated from the motor generator 4, and connected to and operated by an AC power supply P1 in a power supply device 5 dedicated to the charging of the secondary battery, the device dedicated to charging is eliminated by this operation, and the secondary battery 1 can be charged by utilizing the bidirectional power converter 2 for converting power to the motor generator. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、電動車両等の移動体搭載の二次電池への充電システムおよびこのシステムを備えた電動車両に関するものである。   The present invention relates to a charging system for a secondary battery mounted on a moving body such as an electric vehicle and an electric vehicle equipped with this system.

環境に配慮した自動車として、ハイブリッド自動車および電気自動車等のごとく動力源全体または動力源の一部にモータを使用する電動車両が注目されている。   As an environment-friendly vehicle, an electric vehicle using a motor as a whole power source or a part of the power source, such as a hybrid vehicle and an electric vehicle, has attracted attention.

ハイブリッド自動車は、従来のエンジンに加え、インバータを介して直流電源により駆動されるモータを動力源とする自動車である。また、電気自動車は、インバータを介して直流電源によって駆動されるモータを動力源とする自動車である。   A hybrid vehicle is a vehicle that uses a motor driven by a DC power source via an inverter in addition to a conventional engine as a power source. An electric vehicle is a vehicle that uses a motor driven by a DC power supply via an inverter as a power source.

このような電動車両では一般にモータの駆動電源として二次電池を含む。この二次電池では電動車両の走行に伴いその蓄積電力が放電すると、充電する必要がある。   Such an electric vehicle generally includes a secondary battery as a driving power source for the motor. This secondary battery needs to be charged when the stored power is discharged as the electric vehicle travels.

この二次電池の充電システムを図４（ａ）（ｂ）を参照して説明すると、１０はモータ駆動電源である二次電池、２０は電力変換器、３０は電動車両の車輪等の動力源であるモータ、４０は二次電池への充電専用装置、５０は充電に用いる商用交流電源である。   The secondary battery charging system will be described with reference to FIGS. 4 (a) and 4 (b). Reference numeral 10 denotes a secondary battery as a motor drive power source, 20 denotes a power converter, and 30 denotes a power source such as wheels of an electric vehicle. , 40 is a device dedicated to charging a secondary battery, and 50 is a commercial AC power source used for charging.

モータ３０の駆動時は、図４（ａ）で示すように、二次電池１０の蓄積電力は電力変換器２０により直流−交流変換されてモータ３０に印加される。   When the motor 30 is driven, the stored power of the secondary battery 10 is DC-AC converted by the power converter 20 and applied to the motor 30 as shown in FIG.

二次電池１０に充電するときは図４（ｂ）で示すように充電専用装置４０が二次電池１０両端間に接続され、この充電専用装置４０は電力変換器で構成されており、商用交流電源５０の交流電力を直流電力に変換して充電される。なお、こうした電動車両の二次電池に対する充電に関しての特許文献を数例下記する。   When charging the secondary battery 10, as shown in FIG. 4B, a dedicated charging device 40 is connected between both ends of the secondary battery 10, and this dedicated charging device 40 is composed of a power converter and is used for commercial AC. The AC power of the power supply 50 is converted into DC power and charged. In addition, several patent documents relating to charging of the secondary battery of such an electric vehicle will be described below.

特開２００９−２９６８２０号公報JP 2009-296820 A 特開２００９−２７８７０５号公報JP 2009-278705 A 特開２００９−２２５５８７号公報JP 2009-225587 A

上記構成の充電システムにおいては、二次電池１０充電のために充電専用装置４０を必要としているが、こうした充電専用装置４０は電力変換器により構成されており高価であることに加えて、物理的なサイズも大きいから電気自動車内に充電専用装置４０の設置に相当なスペースを必要とする。   In the charging system having the above-described configuration, the dedicated charging device 40 is required for charging the secondary battery 10, but the dedicated charging device 40 is configured by a power converter and is expensive, Because of the large size, a considerable space is required for installing the dedicated charging device 40 in the electric vehicle.

そこで、本発明では、電動車両に備えられる二次電池１０の電力変換器２０を充電に利用するようにしたことで充電専用装置４０の購入コストの削減とスペースの節約とを可能とすることを解決すべき課題としている。   Therefore, in the present invention, the power converter 20 of the secondary battery 10 provided in the electric vehicle is used for charging, thereby making it possible to reduce the purchase cost and the space of the dedicated charging device 40. This is a problem to be solved.

本発明第１は、二次電池と、上記二次電池に接続された双方向性電力変換器と、上記双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えたシステムであって、上記双方向性電力変換器を上記負荷から切り離して二次電池充電用電源に接続操作することが可能でこの操作により上記二次電池充電用電源の電力を上記双方向性電力変換器を介して上記二次電池に充電させることが可能なモード切替操作部を備えた、ことを特徴とする二次電池充電システムである。   A first aspect of the present invention is a system including a secondary battery, a bidirectional power converter connected to the secondary battery, and a load such as a motor or a generator connected to the bidirectional power converter. The bidirectional power converter can be disconnected from the load and connected to a secondary battery charging power source, and this operation converts the power of the secondary battery charging power source to the bidirectional power conversion. A secondary battery charging system comprising a mode switching operation unit capable of charging the secondary battery via a battery.

上記二次電池には、例えば、ニッケル水素またはリチウムイオン等の二次電池がある。   Examples of the secondary battery include secondary batteries such as nickel metal hydride or lithium ion.

本発明第１の二次電池充電システムでは、充電専用装置を用いなくても、モード切替操作部により、二次電池充電用交流電源を双方向性電力変換器に接続し、この双方向性電力変換器を介して二次電池に二次電池充電用交流電源の電力を充電させることができるので、充電専用装置の購入コストの削減とその装置設置スペースの節約とが可能となる。   In the first secondary battery charging system of the present invention, the secondary battery charging AC power source is connected to the bidirectional power converter by the mode switching operation unit without using the dedicated charging device. Since the secondary battery can be charged with the power of the AC power source for charging the secondary battery via the converter, it is possible to reduce the purchase cost of the dedicated charging device and save the device installation space.

本発明第２は、二次電池と、二次電池に接続された双方向性電力変換器と、双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えた構成を具備すると共に、さらに上記負荷が複数コイルがスター結線された負荷またはデルタ結線された負荷であり、これら複数コイルを互いに接続状態と非接続状態とに切り替えると共に上記非接続状態において複数コイルを二次電池充電用の交流電源に接続するモード切替操作部を設けた、ことを特徴とする二次電池充電システムである。   The second aspect of the present invention comprises a configuration including a secondary battery, a bidirectional power converter connected to the secondary battery, and a load such as a motor or a generator connected to the bidirectional power converter. In addition, the load is a load in which a plurality of coils are star-connected or a delta-connected load, and the plurality of coils are switched between a connected state and a disconnected state, and the plurality of coils are connected to a secondary battery in the disconnected state. A secondary battery charging system including a mode switching operation unit connected to an AC power supply for charging.

本発明第２の二次電池充電システムでは、充電専用装置を用いなくても、モード切替操作部により、二次電池充電用交流電源を複数コイルの一端側を介して双方向性電力変換器に接続し、この双方向性電力変換器を介して二次電池に二次電池充電用交流電源の電力を充電させることができるので、充電専用装置の購入コストの削減とその装置設置スペースの節約とが可能となる。   In the second secondary battery charging system of the present invention, the AC power source for charging the secondary battery can be converted into the bidirectional power converter via one end side of the plurality of coils by the mode switching operation unit without using a dedicated charging device. Connecting and allowing the secondary battery to be charged with the power of the AC power supply for charging the secondary battery via this bidirectional power converter reduces the purchase cost of the dedicated charging device and saves the device installation space. Is possible.

本発明第３の二次電池充電システムは、二次電池と、二次電池に接続された双方向性電力変換器と、双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えた移動体搭載二次電池充電システムであって、上記双方向性電力変換器と、二次電池充電用電源に接続された、絶縁トランスまたは非接触給電装置の一方と、上記双方向性電力変換器を上記絶縁トランスまたは非接触給電装置の一方か負荷かにその接続を切り替え操作するモード切替操作部と、を具備し、上記モード切替操作部により絶縁トランスまたは非接触給電装置の一方側に切り替えたときは、絶縁トランスまたは非接触給電装置の一方、モード切替操作部および双方向性電力変換器を介して二次電池充電用電源の電力を二次電池に充電可能とした、ことを特徴とする二次電池充電システムである。   The third secondary battery charging system of the present invention includes a secondary battery, a bidirectional power converter connected to the secondary battery, a load such as a motor and a generator connected to the bidirectional power converter, A mobile battery mounted secondary battery charging system comprising: the bidirectional power converter; one of an insulating transformer or a non-contact power feeding device connected to a secondary battery charging power supply; and the bidirectional power supply. A mode switching operation unit for switching the connection of the power converter to one of the insulation transformer or the non-contact power supply device or a load, and one side of the insulation transformer or the non-contact power supply device by the mode switching operation unit. When switching to, the power of the secondary battery charging power source can be charged to the secondary battery via one of the insulation transformer or the non-contact power feeding device, the mode switching operation unit and the bidirectional power converter. Special It is a secondary battery charging system that.

本発明第３の二次電池充電システムでは、充電専用装置を用いなくても、モード切替操作部により、二次電池充電用交流電源を双方向性電力変換器に接続することで二次電池に充電用交流電源の電力を充電させることができるので、充電専用装置の購入コストの削減とその装置設置スペースの節約とが可能となる。   In the third secondary battery charging system of the present invention, the secondary battery charging AC power source is connected to the bidirectional power converter by the mode switching operation unit without using the dedicated charging device. Since the power of the AC power supply for charging can be charged, it is possible to reduce the purchase cost of the dedicated charging device and to save the device installation space.

上記本発明第１ないし第３のシステムでは、上記構成を電動車両を含む移動体に実装することができる。この電動車両としては、そのモータ等の負荷駆動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。   In the first to third systems of the present invention, the above configuration can be mounted on a moving body including an electric vehicle. The electric vehicle may be a vehicle that uses electric energy from a battery for all or a part of a load driving source such as a motor, such as an electric vehicle, a hybrid vehicle, a plug-in hybrid vehicle, and a hybrid rail vehicle. , Forklifts, electric wheelchairs, electric assist bicycles, electric scooters.

本発明によれば、二次電池とモータやジェネレータ等の負荷との間に介在する双方向性電力変換器を二次電池充電に利用するので、充電専用装置が不要化し、結果、当該充電専用装置購入のコスト削減と該装置設置スペースの節約化とを可能とすることができる。   According to the present invention, the bidirectional power converter interposed between the secondary battery and a load such as a motor or a generator is used for charging the secondary battery. It is possible to reduce the cost of purchasing the device and save the space for installing the device.

図１は本発明の実施の形態１にかかる二次電池充電システムを備えた移動体内のモータジェネレータ駆動系を示す図である。FIG. 1 is a diagram showing a motor generator drive system in a moving body provided with a secondary battery charging system according to Embodiment 1 of the present invention. 図２（ａ）は本発明の実施の形態２にかかる二次電池充電システムを備えた移動体内のモータジェネレータ駆動系の構成を示す図、図２（ｂ）はモータジェネレータの変形例を含む、図２（ａ）の要部のみ示す図である。FIG. 2A is a diagram showing a configuration of a motor generator drive system in a moving body provided with a secondary battery charging system according to a second embodiment of the present invention, and FIG. 2B includes a modification of the motor generator. It is a figure which shows only the principal part of Fig.2 (a). 図３は本発明の実施の形態３にかかる二次電池充電システムを備えた移動体内のモータジェネレータ駆動系の構成を示す図である。FIG. 3 is a diagram illustrating a configuration of a motor generator drive system in a moving body including the secondary battery charging system according to the third embodiment of the present invention. 図４は移動体内のモータジェネレータ駆動系において二次電池への充電構成を示す図である。FIG. 4 is a diagram showing a configuration for charging the secondary battery in the motor generator drive system in the moving body.

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移動体搭載の二次電池への充電システムを説明する。   Hereinafter, a charging system for a secondary battery mounted on a moving body according to an embodiment of the present invention will be described with reference to the accompanying drawings.

（実施の形態１）
図１を参照して、１は二次電池、２は双方向性電力変換器、３は駆動モード／充電モードを切替えるモード切替操作部、４はモータジェネレータ（回転電機）、５は、二次電池１の充電用の電源装置である。Ｌ２，Ｌ３はリアクトルであり、このリアクトルＬ２，Ｌ３よりもモード切替操作部３側にコンセント／プラグ装置６、または、リアクトルＬ２，Ｌ３よりも充電用電源装置５側にコンセント／プラグ装置７を設ける。モード切替操作部３側にプラグ／コンセント装置６を設ける場合は、二次電池１、双方向性電力変換器２、モード切替操作部３、モータジェネレータ４が電動車両側に搭載される一方、充電用電源装置５は電動車両外となり、電動車両が軽量化される。充電用電源装置５側にプラグ／コンセント装置７を設ける場合は、二次電池１、双方向性電力変換器２、モード切替操作部３、モータジェネレータ４、リアクトルＬ２，Ｌ３が電動車両側に搭載され、家庭側等が簡素化される。 (Embodiment 1)
Referring to FIG. 1, 1 is a secondary battery, 2 is a bidirectional power converter, 3 is a mode switching operation unit for switching between driving mode / charging mode, 4 is a motor generator (rotary electric machine), and 5 is a secondary battery. This is a power supply device for charging the battery 1. L2 and L3 are reactors, and the outlet / plug device 6 is provided closer to the mode switching operation unit 3 than the reactors L2 and L3, or the outlet / plug device 7 is provided closer to the charging power supply 5 than the reactors L2 and L3. . When the plug / outlet device 6 is provided on the mode switching operation unit 3 side, the secondary battery 1, the bidirectional power converter 2, the mode switching operation unit 3, and the motor generator 4 are mounted on the electric vehicle side, while charging. The power supply device 5 is outside the electric vehicle, and the electric vehicle is reduced in weight. When the plug / outlet device 7 is provided on the charging power supply device 5 side, the secondary battery 1, the bidirectional power converter 2, the mode switching operation unit 3, the motor generator 4, and the reactors L2 and L3 are mounted on the electric vehicle side. Thus, the home side and the like are simplified.

双方向性電力変換器２は、コンバータ２ａと、インバータ２ｂとを備える。コンバータ２ａは、昇降圧チョッパ回路を含み、リアクトルＬ１と、たとえばＩＧＢＴ（Insulated Gate Bipolar Transistor）等のスイッチング素子Ｑ１，Ｑ２と、ダイオードＤ１，Ｄ２と共に、平滑コンデンサＣ１を備える。スイッチング素子Ｑ１およびＱ２は、電源ラインＬＮ１とアースラインＬＮ２との間に直列接続される。リアクトルＬ１は、一端側が二次電池１に、他端側がスイッチング素子Ｑ１，Ｑ２の接続ノードに接続される。各スイッチング素子Ｑ１，Ｑ２のエミッタ／コレクタ間には、エミッタ側からコレクタ側へ電流を流すように、逆並列ダイオードＤ１，Ｄ２がそれぞれ接続されている。スイッチング素子Ｑ１およびＱ２のゲートには、スイッチング制御信号が与えられ、当該スイッチング制御信号に応答して、スイッチング素子Ｑ１およびＱ２のオン・オフが制御される。平滑コンデンサＣ１は電源ラインＬＮ１とアースラインＬＮ２との間に接続されて電流、電圧の平滑化に用いる。   Bidirectional power converter 2 includes a converter 2a and an inverter 2b. Converter 2a includes a step-up / step-down chopper circuit, and includes a reactor L1, switching elements Q1 and Q2 such as IGBTs (Insulated Gate Bipolar Transistors), and diodes D1 and D2, and a smoothing capacitor C1. Switching elements Q1 and Q2 are connected in series between power supply line LN1 and ground line LN2. Reactor L1 has one end connected to secondary battery 1 and the other end connected to a connection node of switching elements Q1 and Q2. Anti-parallel diodes D1 and D2 are connected between the emitters / collectors of switching elements Q1 and Q2, respectively, so that current flows from the emitter side to the collector side. A switching control signal is applied to the gates of switching elements Q1 and Q2, and on / off of switching elements Q1 and Q2 is controlled in response to the switching control signal. The smoothing capacitor C1 is connected between the power supply line LN1 and the earth line LN2, and is used for smoothing current and voltage.

コンバータ２ａは、電源ラインＬＮ１およびアースラインＬＮ２の間に設けられ、スイッチング素子Ｑ１，Ｑ２のスイッチング制御によって、モータジェネレータ４がモータとして駆動される時には二次電池１の電圧を昇圧してモータ駆動電圧を生成して出力し、また、モータジェネレータ４がジェネレータとして動作するときは、モータジェネレータ４の発電電力を二次電池１に充電させる。   Converter 2a is provided between power supply line LN1 and ground line LN2. When motor generator 4 is driven as a motor by switching control of switching elements Q1 and Q2, the voltage of secondary battery 1 is boosted to drive the motor drive voltage. When the motor generator 4 operates as a generator, the secondary battery 1 is charged with the electric power generated by the motor generator 4.

平滑コンデンサＣ１は、電源ラインＬＮ１およびアースラインＬＮ２の間に接続され、コンバータ２ａから出力されたモータ動作電圧を平滑化してインバータ２ｂへ供給したり、モータジェネレータ４の発電電力を平滑化してコンバータ２ａに供給する。   Smoothing capacitor C1 is connected between power supply line LN1 and ground line LN2, smoothes the motor operating voltage output from converter 2a and supplies it to inverter 2b, or smoothes the power generated by motor generator 4 to convert converter 2a. To supply.

インバータ２ｂはモータジェネレータ４を車輪駆動モータとして機能させるときはコンバータ２ａ出力をモータ動作電圧として三相交流に変換してモータジェネレータ４に出力するＰＷＭインバータとして機能する一方、モータジェネレータ４に発電された電力をコンバータ２ａに戻すＰＷＭコンバータとして機能する。インバータ２ｂは、電源ラインＬＮ１およびアースラインＬＮ２の間に並列に接続される、Ｕ相アーム２ｂ１、Ｖ相アーム２ｂ２およびＷ相アーム２ｂ３を構成するスイッチング素子Ｑ３〜Ｑ８からなる三相インバータである。各スイッチング素子Ｑ３〜Ｑ８のコレクタ／エミッタ間には、逆並列ダイオードＤ３〜Ｄ８がそれぞれ接続されている。   The inverter 2b functions as a PWM inverter that converts the output of the converter 2a into a three-phase alternating current as a motor operating voltage and outputs it to the motor generator 4 when the motor generator 4 functions as a wheel drive motor. It functions as a PWM converter that returns power to the converter 2a. Inverter 2b is a three-phase inverter composed of switching elements Q3 to Q8 constituting U-phase arm 2b1, V-phase arm 2b2 and W-phase arm 2b3 connected in parallel between power supply line LN1 and ground line LN2. Anti-parallel diodes D3-D8 are connected between the collectors / emitters of switching elements Q3-Q8, respectively.

インバータ２ｂの各相アーム２ｂ１、２ｂ２、２ｂ３の中間点のうち、Ｕ，Ｖ，Ｗ相アーム２ｂ１、２ｂ２，２ｂ３の中間点はモード切替操作部３を介して三相の永久磁石モータであるモータジェネレータ４のＵ，Ｖ，Ｗ相コイル（ステータコイル）ＣＬ１，ＣＬ２，ＣＬ３の各相端に接続されている。   Among the intermediate points of the phase arms 2b1, 2b2, 2b3 of the inverter 2b, the intermediate point of the U, V, W phase arms 2b1, 2b2, 2b3 is a motor which is a three-phase permanent magnet motor via the mode switching operation unit 3. The U, V, and W phase coils (stator coils) CL1, CL2, and CL3 of the generator 4 are connected to phase ends.

モード切替操作部３は、Ｕ，Ｖ相アーム２ｂ１、２ｂ２それぞれの中間点に接続された可動接点３ａ１、３ｂ１と、モータジェネレータ４のＵ，Ｖ相コイル（ステータコイル）ＣＬ１，ＣＬ２側に接続された固定接点３ａ２，３ｂ２と、充電用電源装置５側に接続された固定接点３ａ３，３ｂ３と、を備える。   The mode switching operation unit 3 is connected to the movable contacts 3a1 and 3b1 connected to the intermediate points of the U and V phase arms 2b1 and 2b2 and the U and V phase coils (stator coils) CL1 and CL2 side of the motor generator 4. Fixed contacts 3a2 and 3b2 and fixed contacts 3a3 and 3b3 connected to the charging power supply 5 side.

モード切替操作部３の可動接点３ａ１、３ｂ１が固定接点３ａ２，３ｂ２に接続されているときは、モータジェネレータ４が二次電池１の蓄積電力で駆動され、また、モータジェネレータ４が発電機として動作するときはその発電電力を双方向性電力変換器２側を介して二次電池１に供給する。   When the movable contacts 3a1, 3b1 of the mode switching operation unit 3 are connected to the fixed contacts 3a2, 3b2, the motor generator 4 is driven by the stored power of the secondary battery 1, and the motor generator 4 operates as a generator. When this occurs, the generated power is supplied to the secondary battery 1 via the bidirectional power converter 2 side.

モード切替操作部３の可動接点３ａ１、３ｂ１が固定接点３ａ３，３ｂ３に接続されているときは、充電用電源装置５からの電力は双方向性電力変換器２を介して二次電池１に電力が充電される。ここで、充電用電源装置５は、交流電源Ｐ１と、平滑コンデンサＣ２とを備える。交流電源Ｐ１は商用電源が好ましいが、それ以外の交流電源、あるいは、分散型直流電源をＤＣ／ＡＣコンバータで交流に変換した電源でもよい。   When the movable contacts 3 a 1 and 3 b 1 of the mode switching operation unit 3 are connected to the fixed contacts 3 a 3 and 3 b 3, the power from the charging power supply device 5 is supplied to the secondary battery 1 through the bidirectional power converter 2. Is charged. Here, the charging power supply device 5 includes an AC power supply P1 and a smoothing capacitor C2. The AC power source P1 is preferably a commercial power source, but may be an AC power source other than that or a power source obtained by converting a distributed DC power source into an AC current using a DC / AC converter.

リアクトルＬ２，Ｌ３は、二次電池１への充電時には双方向性電力変換器２のインバータ２ｂがＰＷＭコンバータ２ｂとして動作する場合にこのＰＷＭコンバータ２ｂの交流側電流のリプル電流を小さくする。また、充電用電源装置５内のコンデンサＣ２は、上記リプル電流を流すことでそのリプル電流が充電用電源装置５内の交流電源Ｐ１に流れないようにする。   Reactors L2 and L3 reduce the ripple current of the AC side current of PWM converter 2b when inverter 2b of bidirectional power converter 2 operates as PWM converter 2b during charging of secondary battery 1. Further, the capacitor C2 in the charging power supply device 5 causes the ripple current to flow so that the ripple current does not flow to the AC power supply P1 in the charging power supply device 5.

以上の構成を備えた実施の形態１の充電システムでは、充電専用装置を用いなくても、モード切替操作部３により、充電用電源装置５を双方向性電力変換器２に接続し、この双方向性電力変換器２を介して二次電池１に充電用電源装置５の電力を充電させることができ、従来の専用装置の購入コストの削減とその装置設置スペースの節約とが可能となる。
なお、平滑コンデンサＣ１に並列にインバータ２ｂと同様のインバータを設け、このインバータにもう１台のモータジェネレータを接続することで、モータジェネレータ２台とした場合、一方をモータ、他方をジェネレータとして動作させてもよく、これらいずれか一方、あるいは両方に充電用電源装置５を設け、モード切替操作部３で二次電池に充電できるようにしてもよい。 In the charging system according to the first embodiment having the above configuration, the charging power supply device 5 is connected to the bidirectional power converter 2 by the mode switching operation unit 3 without using a dedicated charging device. The secondary battery 1 can be charged with the electric power of the charging power supply device 5 via the directional power converter 2, so that it is possible to reduce the purchase cost of the conventional dedicated device and to save the device installation space.
In addition, when an inverter similar to the inverter 2b is provided in parallel with the smoothing capacitor C1 and another motor generator is connected to this inverter, when two motor generators are provided, one is operated as a motor and the other as a generator. Alternatively, either or both of them may be provided with the charging power supply device 5 so that the mode switching operation unit 3 can charge the secondary battery.

（実施の形態２）
図２（ａ）を参照して実施の形態２の充電システムを説明する。図２（ａ）において、図１と対応する部分には同一の符号を付し、その部分についての詳しい説明は略する。図２（ａ）で示す実施の形態２においては、モータジェネレータ４のＵ，Ｖ，Ｗ相コイルＣＬ１，ＣＬ２，ＣＬ３の各一端側間が接点４ａ，４ｂ，４ｃを介して接続されると共に、Ｕ，Ｖ，Ｗ相コイルＣＬ１，ＣＬ２の一端側間にコンデンサＣ３、プラグ／コンセント装置６を設けると共に二次電池充電用電源装置７が接続されている。充電用電源装置７は交流電源Ｐ２、を含む。なお、モータジェネレータ４のＵ，Ｖ，Ｗ相コイルＣＬ１，ＣＬ２，ＣＬ３の各一端側の中性点の接続、分離は上記接点４ａ，４ｂ，４ｃの形態には限定されない。 (Embodiment 2)
A charging system according to the second embodiment will be described with reference to FIG. In FIG. 2A, the same reference numerals are given to the portions corresponding to those in FIG. 1, and detailed description thereof will be omitted. In the second embodiment shown in FIG. 2A, the U, V, and W phase coils CL1, CL2, and CL3 of the motor generator 4 are connected to each other through contact points 4a, 4b, and 4c, A capacitor C3 and a plug / outlet device 6 are provided between one end sides of the U, V and W phase coils CL1 and CL2, and a secondary battery charging power supply device 7 is connected. The charging power supply device 7 includes an AC power supply P2. The connection and separation of the neutral point on each end side of the U, V, and W phase coils CL1, CL2, and CL3 of the motor generator 4 are not limited to the form of the contacts 4a, 4b, and 4c.

そして、接点４ａ，４ｂ，４ｃがオンしかつプラグ／コンセント装置が接続されていないときはモータジェネレータ４のＵ，Ｖ，Ｗ相コイルＣＬ１，ＣＬ２，ＣＬ３の各一端同士が接続されて中性点を形成し、また、接点４ａ，４ｂ，４ｃがオフしプラグ／コンセント装置６が接続されているときは充電用電源装置７内の交流電源Ｐ２の電力が二次電池１に充電される。   When the contacts 4a, 4b, 4c are turned on and the plug / outlet device is not connected, one end of each of the U, V, W phase coils CL1, CL2, CL3 of the motor generator 4 is connected to the neutral point. When the contacts 4a, 4b, 4c are turned off and the plug / outlet device 6 is connected, the power of the AC power supply P2 in the charging power supply device 7 is charged to the secondary battery 1.

なお、二次電池に充電するモードのときはモータジェネレータ４のコイルＣＬ１，ＣＬ２は上記リアクトルＬ２，Ｌ３と同様の機能を有する。   In the mode in which the secondary battery is charged, coils CL1 and CL2 of motor generator 4 have the same functions as reactors L2 and L3.

なお、モータジェネレータ４のＵ，Ｖ，Ｗ相コイルＣＬ１，ＣＬ２，ＣＬ３は、スター（Ｙ）結線されているが、図２（ｂ）のモータジェネレータ４Ａで示すように、デルタ（Δ）結線でもよい。   The U, V, and W phase coils CL1, CL2, and CL3 of the motor generator 4 are star (Y) connected. However, as shown by the motor generator 4A in FIG. Good.

（実施の形態３）
図３を参照して実施の形態３の充電システムを説明する。図３において、図１と対応する部分には同一の符号を付し、その部分についての詳しい説明は略する。図３で示す実施の形態３においては、モード切替操作部８と、絶縁トランス９と、充電用電源装置１０とを備える。モード切替操作部８は、可動接点８ａ１，固定接点８ａ２，８ａ３からなるＵ相切替操作部と、可動接点８ｂ１、固定接点８ｂ２，８ｂ３からなるＶ相切替操作部とを含む。Ｕ相切替操作部の可動接点８ａ１はＵ相アーム２ｂ１に、Ｖ相切替操作部の可動接点８ｂ１はＶ相アーム２ｂ２に接続され、Ｕ相切替操作部の固定接点８ａ２はモータジェネレータ４のＵ相コイルＣＬ１の相端に、Ｖ相切替操作部の固定接点８ｂ２はモータジェネレータ４のＶ相コイルＣＬ２の相端に接続され、Ｕ相切替操作部の固定接点８ａ３は絶縁トランス９の二次側コイルＳＬの一端側に、Ｖ相切替操作部の固定接点８ｂ３は同二次側コイルＳＬの他端側に接続されている。絶縁トランス９は、一次側コイルＰＬと、二次側コイルＳＬとを含み、一次側コイルＰＬは充電用電源装置１０内の交流電源Ｐ３の電力が印加されて電磁界Ｈが発生すると共に、その電磁界Ｈは二次側コイルＳＬに誘起されることで、一次側コイルＰＬと二次側コイルＳＬとが電磁結合する。そして、この電磁結合により交流電源Ｐ３の電力が双方向性電力変換器２を介して二次電池１に充電される。 (Embodiment 3)
A charging system according to Embodiment 3 will be described with reference to FIG. 3, parts corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. The third embodiment shown in FIG. 3 includes a mode switching operation unit 8, an insulating transformer 9, and a charging power supply device 10. The mode switching operation unit 8 includes a U-phase switching operation unit composed of a movable contact 8a1, fixed contacts 8a2 and 8a3, and a V-phase switching operation unit composed of a movable contact 8b1 and fixed contacts 8b2 and 8b3. The movable contact 8a1 of the U-phase switching operation unit is connected to the U-phase arm 2b1, the movable contact 8b1 of the V-phase switching operation unit is connected to the V-phase arm 2b2, and the fixed contact 8a2 of the U-phase switching operation unit is the U-phase of the motor generator 4. The fixed contact 8b2 of the V-phase switching operation unit is connected to the phase end of the coil CL1, and the fixed contact 8a3 of the U-phase switching operation unit is connected to the secondary side coil of the insulation transformer 9. The fixed contact 8b3 of the V-phase switching operation unit is connected to the other end side of the secondary coil SL on one end side of the SL. The insulating transformer 9 includes a primary side coil PL and a secondary side coil SL, and the primary side coil PL is applied with the power of the AC power supply P3 in the charging power supply device 10 to generate an electromagnetic field H. The electromagnetic field H is induced in the secondary coil SL, so that the primary coil PL and the secondary coil SL are electromagnetically coupled. And the electric power of AC power supply P3 is charged to the secondary battery 1 via the bidirectional power converter 2 by this electromagnetic coupling.

絶縁トランス９は、二次電池１、双方向性電力変換器２側と、充電用電源装置１０側との電気絶縁をとることで、安全を図っている。   The insulation transformer 9 is designed to be safe by electrically insulating the secondary battery 1, the bidirectional power converter 2 side, and the charging power supply device 10 side.

なお、絶縁トランス９が商用周波数で動作する場合は、その重量は重いので、モード切替操作部８と絶縁トランス９との間にプラグ／コンセント装置１１を設けることで、電動車両側の軽量化を可能としている。   When the insulation transformer 9 operates at a commercial frequency, its weight is heavy. Therefore, providing the plug / outlet device 11 between the mode switching operation unit 8 and the insulation transformer 9 reduces the weight of the electric vehicle. It is possible.

なお、絶縁トランス９という意味ではなく、非接触給電装置９とし、一次側コイルＰＬを二次側コイルＳＬに近接させることで、これら両コイルＰＬ，ＳＬを介して充電用電源装置１０の電力を二次電池１に給電して充電させることができるようにしてもよく、この場合も本実施の形態に含む。この場合は、プラグ／コンセント装置１１を設けずに、二次側コイルＳＬを含め、それより前段側を電動車両等の移動体側とし、一次側コイルＰＬと充電用電源装置１０とをユーザー側としてもよい。   In addition, it is not the meaning of the insulation transformer 9, but it is set as the non-contact electric power feeder 9, and the electric power of the power supply apparatus 10 for charge is made to pass through both these coils PL and SL by making the primary side coil PL close to the secondary side coil SL. The secondary battery 1 may be supplied with power and charged, and this case is also included in this embodiment. In this case, the plug / outlet device 11 is not provided, the secondary side coil SL is included, the front side is the moving body side such as an electric vehicle, and the primary side coil PL and the charging power source device 10 are the user side. Also good.

１ 二次電池
２ 双方向性電力変換器
３ モード切替操作部
４ モータジェネレータ
５ 充電用電源装置 DESCRIPTION OF SYMBOLS 1 Secondary battery 2 Bidirectional power converter 3 Mode switching operation part 4 Motor generator 5 Charging power supply device

Claims (4)

二次電池と、二次電池に接続された双方向性電力変換器と、双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えた移動体搭載二次電池充電システムであって、
上記双方向性電力変換器を上記負荷から切り離して二次電池充電用電源に接続操作することが可能でこの操作により上記二次電池充電用電源の電力を上記双方向性電力変換器を介して二次電池に充電させることが可能なモード切替操作部を備えた、ことを特徴とする移動体搭載二次電池充電システム。 A mobile battery mounted secondary battery charging system comprising: a secondary battery; a bidirectional power converter connected to the secondary battery; and a load such as a motor or a generator connected to the bidirectional power converter. There,
The bidirectional power converter can be disconnected from the load and connected to the secondary battery charging power source. By this operation, the power of the secondary battery charging power source can be connected via the bidirectional power converter. A mobile battery mounted secondary battery charging system comprising a mode switching operation unit capable of charging a secondary battery. 二次電池と、二次電池に接続された双方向性電力変換器と、双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えた移動体搭載二次電池充電システムであって、
上記負荷が、複数コイルがスター結線された負荷またはデルタ結線された負荷であり、これら複数コイルを互いに接続状態と非接続状態とに切り替えると共に上記非接続状態において複数コイルを二次電池充電用の交流電源に接続するモード切替操作部を設けた、ことを特徴とする移動体搭載二次電池充電システム。 A mobile battery mounted secondary battery charging system comprising: a secondary battery; a bidirectional power converter connected to the secondary battery; and a load such as a motor or a generator connected to the bidirectional power converter. There,
The load is a load in which a plurality of coils are star-connected or a load that is delta-connected, and the plurality of coils are switched between a connected state and a disconnected state, and in the disconnected state, the plurality of coils are used for charging a secondary battery. A mobile battery mounted secondary battery charging system comprising a mode switching operation unit connected to an AC power source. 二次電池と、上記二次電池に接続された双方向性電力変換器と、上記双方向性電力変換器に接続されたモータやジェネレータ等の負荷と、を備えた移動体搭載二次電池充電システムであって、
上記双方向性電力変換器と、
二次電池充電用電源に接続された、絶縁トランスまたは非接触給電装置の一方と、
上記双方向性電力変換器を上記絶縁トランスまたは非接触給電装置の一方か負荷かにその接続を切り替え操作するモード切替操作部と、
を具備し、
上記モード切替操作部により絶縁トランスまたは非接触給電装置の一方側に切り替えたときは、絶縁トランスまたは非接触給電装置の一方、モード切替操作部および双方向性電力変換器を介して二次電池充電用電源の電力を二次電池に充電可能とした、ことを特徴とする移動体搭載二次電池充電システム。 Rechargeable mobile-equipped secondary battery comprising a secondary battery, a bidirectional power converter connected to the secondary battery, and a load such as a motor or a generator connected to the bidirectional power converter A system,
The bidirectional power converter;
One of an isolation transformer or a non-contact power feeding device connected to a power source for charging a secondary battery;
A mode switching operation unit for switching the connection of the bidirectional power converter to one of the insulation transformer or the non-contact power feeding device or a load;
Comprising
When switching to one side of the insulation transformer or the non-contact power feeding device by the mode switching operation unit, the secondary battery is charged via the mode switching operation unit and the bidirectional power converter, either the insulation transformer or the non-contact power feeding device. A mobile battery mounted secondary battery charging system characterized in that the secondary battery can be charged with power from a power source for a vehicle. 上記請求項１ないし３いずれかに記載のシステムを実装した電動車両等の移動体。   A moving body such as an electric vehicle in which the system according to claim 1 is mounted.
JP2010050098A 2010-03-08 2010-03-08 Charging system of secondary battery mounted to moving body, and electric vehicle Pending JP2011188601A (en)

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