JPH1042408A - Device used both as charging and switching for electric vehicle - Google Patents
Device used both as charging and switching for electric vehicleInfo
- Publication number
- JPH1042408A JPH1042408A JP8191778A JP19177896A JPH1042408A JP H1042408 A JPH1042408 A JP H1042408A JP 8191778 A JP8191778 A JP 8191778A JP 19177896 A JP19177896 A JP 19177896A JP H1042408 A JPH1042408 A JP H1042408A
- Authority
- JP
- Japan
- Prior art keywords
- charging
- motor
- contactor
- arm
- battery
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電気車に搭載してい
るバッテリの充電装置に係り特にバッテリフォークリフ
ト用の小形充電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charger for an electric vehicle, and more particularly to a small battery charger for a battery forklift.
【０００２】[0002]
（１）従来の充電装置として特開昭59−61402 号公報に
開示のものがあった。このものは、１個のモータを制御
しているときに走行時と充電時にコンタクタを切替充電
するものである。(1) A conventional charging device is disclosed in Japanese Patent Application Laid-Open No. 59-61402. In this method, a contactor is switched and charged during traveling and charging while controlling one motor.
【０００３】（２）次に、切替スイッチ（例えばコンタ
クタ）を用いないで充電する従来の技術として追加した
スイッチング素子のアームを用いるもので特開平7−193
911号公報に開示のものがある。(2) Next, a conventional technique for charging without using a changeover switch (for example, a contactor) uses an arm of a switching element added as a conventional technique.
There is one disclosed in Japanese Patent Publication No. 911.
【０００４】[0004]
（１）コンタクタによる切替方式では、走行時の大電流
を通電させる必要がありコンタクタが大きくなる。(1) In the switching method using a contactor, it is necessary to supply a large current during traveling, and the contactor becomes large.
【０００５】（２）スイッチング素子のアームを使用す
る方式では、三相交流電源に対応できない。スイッチン
グ素子を２個直列接続したアームを追加する必要があ
る。(2) A method using an arm of a switching element cannot cope with a three-phase AC power supply. It is necessary to add an arm in which two switching elements are connected in series.
【０００６】これらにより、装置が大きくなるという課
題がのこる。[0006] As a result, there is a problem that the apparatus becomes large.
【０００７】[0007]
【課題を解決するための手段】充電時は、パワーステア
リング用直流モータの半導体スイッチングからなるブリ
ッジ回路と走行に使用するインバータの半導体スイッチ
ングからなる１アームを用いる。During charging, a bridge circuit consisting of semiconductor switching of a DC motor for power steering and one arm consisting of semiconductor switching of an inverter used for traveling are used.
【０００８】また充電時の通電を行うのに、パワーステ
アリング用直流モータの通電切替として、コンタクタの
接点（Ｃ接点）を介して行い走行に使用するインバータ
からは通電のみのコンタクタ接点（Ａ接点）を用いる。In order to energize at the time of charging, the energization of the DC motor for power steering is switched via a contact (C contact) of a contactor, and a contactor contact (A contact) which is only energized from an inverter used for traveling. Is used.
【０００９】パワーステアリング用直流モータの通電電
流は、充電電流(２０Ａから７０Ａ)と同じくらいであ
る。一方、インバータの走行電流は３００Ａから５００
Ａと大きい。パワーステアリング通電用コンタクタの接
点（Ｃ接点）を介して電流切替を行うと接点容量を走行
電流より小さくできる。The current supplied to the DC motor for power steering is about the same as the charging current (20 A to 70 A). On the other hand, the running current of the inverter is 300 A to 500
A and big. If the current is switched through the contact (C contact) of the power steering energizing contactor, the contact capacity can be made smaller than the running current.
【００１０】インバータからは充電電流のみを通電でき
るコンタクタ接点容量を用いるので小さくできる。[0010] Since the contactor contact capacity capable of supplying only the charging current from the inverter is used, the size can be reduced.
【００１１】[0011]
【発明の実施の形態】以下、本発明を図に従って詳細に
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.
【００１２】図１は本発明からなる主回路図を示す。FIG. 1 shows a main circuit diagram according to the present invention.
【００１３】バッテリ１の（＋）電源線２からスイッチ
ング素子４(以下Ｑ１，Ｑ２で示す)を２個直列に接続し
たアーム５（以下特に記さない）を（−）電源線３に接
続する。同じようにスイッチング素子Ｑ３，Ｑ４でアー
ムを構成する。An arm 5 (hereinafter not particularly described) in which two switching elements 4 (hereinafter referred to as Q1 and Q2) are connected in series from a (+) power supply line 2 of the battery 1 is connected to a (-) power supply line 3. Similarly, an arm is constituted by the switching elements Q3 and Q4.
【００１４】スイッチング素子Ｑ１，Ｑ２，Ｑ３，Ｑ４
で半導体スイッチング装置６を構成する。Switching elements Q1, Q2, Q3, Q4
Constitute the semiconductor switching device 6.
【００１５】スイッチング素子Ｑ１，Ｑ２の接続点から
コンタクタ７の接点８をスイッチング素子Ｑ３，Ｑ４の
接続点から電流センサ１１そしてコンタクタ７の接点９
を接続する。The contact point 8 of the contactor 7 is connected from the connection point of the switching elements Q1 and Q2 to the current sensor 11 and the contact point 9 of the contactor 7 from the connection point of the switching elements Q3 and Q4.
Connect.
【００１６】コンタクタ７の接点８，接点９のＢ接点
（常閉接点）から直流モータ１４（例えばパワーステア
リング用モータ）を接続する。A DC motor 14 (for example, a motor for power steering) is connected from the contact 8 of the contactor 7 and the B contact (normally closed contact) of the contact 9.
【００１７】スイッチング素子Ｑ５，Ｑ６，Ｑ７，Ｑ
８，Ｑ９，Ｑ１０で半導体スイッチング装置１５を構成
する。アームからは電流センサ１２，電流センサ１３な
どを介して交流モータ１６（例えば走行用モータ）に接
続する。Switching elements Q5, Q6, Q7, Q
The semiconductor switching device 15 is configured by 8, Q9, and Q10. The arm is connected to an AC motor 16 (for example, a traveling motor) via a current sensor 12, a current sensor 13, and the like.
【００１８】半導体スイッチング装置１５はインバータ
と呼ばれ、交流モータ１６は誘導電動機が用いられる。The semiconductor switching device 15 is called an inverter, and the AC motor 16 uses an induction motor.
【００１９】この回路構成は各モータを駆動し車両が走
行するための回路である。This circuit configuration is a circuit for driving each motor and running the vehicle.
【００２０】つぎに充電用の回路について述べる。Next, a charging circuit will be described.
【００２１】三相交流電源１７の端子にはトランス１８
の一次コイル１９が接続される。The terminal of the three-phase AC power supply 17 has a transformer 18
Primary coil 19 is connected.
【００２２】二次コイル２０の内２個はコンタクタ７の
接点８，接点９のＡ接点(常開接点)から半導体スイッチ
ング装置６に接続し、二次コイル２０の残り１個はコン
タクタ７の接点１０のＡ接点（常開接点）から半導体ス
イッチング装置１５に接続する。Two of the secondary coils 20 are connected to the semiconductor switching device 6 from the A contact (normally open contact) of the contact 8 and the contact 9 of the contactor 7, and the other one of the secondary coils 20 is the contact of the contactor 7. 10 A contacts (normally open contacts) are connected to the semiconductor switching device 15.
【００２３】三相交流電源１７の２個の端子からはダイ
オードブリッジ２１を介してコンタクタ７のコイル２２
に接続する。The two terminals of the three-phase AC power supply 17 are connected via a diode bridge 21 to a coil 22 of the contactor 7.
Connect to
【００２４】三相交流電源１７に電圧が供給されると、
コンタクタ７のコイル２２に電流が流れ接点８，接点
９，接点１０のＡ接点（常開接点）が閉じる。When a voltage is supplied to the three-phase AC power supply 17,
A current flows through the coil 22 of the contactor 7, and the A contacts (normally open contacts) of the contacts 8, 9, and 10 close.
【００２５】充電時はスイッチング素子Ｑ１，Ｑ２，Ｑ
３，Ｑ４，Ｑ５，Ｑ６をオン・オフさせる。During charging, switching elements Q1, Q2, Q
3, Q4, Q5, Q6 are turned on / off.
【００２６】直流モータ１４には、接点８，接点９が開
き通電されない。The contact 8 and the contact 9 are opened to the DC motor 14 and no current is supplied.
【００２７】交流モータ１６には、スイッチング素子Ｑ
７，Ｑ８，Ｑ９，Ｑ１０をオフにしておくので通電され
ない。The AC motor 16 has a switching element Q
No power is supplied since 7, Q8, Q9 and Q10 are turned off.
【００２８】また、充電時は電流センサ１１，電流セン
サ１２や走行用の回路（後述する制御回路）を共用でき
るなどの効果があり、小形にできる。Further, at the time of charging, the current sensor 11, the current sensor 12, and a traveling circuit (a control circuit to be described later) can be shared, and the size can be reduced.
【００２９】図２は本発明からなる別の電気車用主回路
図を示す。FIG. 2 shows another main circuit diagram for an electric vehicle according to the present invention.
【００３０】スイッチング素子Ｑ１１，Ｑ１２，Ｑ１
３，Ｑ１４，Ｑ１５，Ｑ１６を追加し油圧用モータ２３
を交流電流で駆動するとき各モータの半導体スイッチン
グ装置の１アームを用いれば、コンタクタ７の接点はす
べてＡ接点からなる接点２４でよいため充電用として専
用化したコンタクタ７はさらに小形化される。Switching elements Q11, Q12, Q1
3, Q14, Q15 and Q16 are added and the hydraulic motor 23
When one arm of the semiconductor switching device of each motor is used to drive the contactors, all the contacts of the contactor 7 may be the contacts 24 consisting of A contacts, so that the contactor 7 dedicated for charging is further downsized.
【００３１】図３は充電時の主回路図を示す。FIG. 3 shows a main circuit diagram during charging.
【００３２】（＋）電源線２から保護用コンタクタ３１
を介して（＋）線３０に接続する。ダイオードＤ１抵抗
Ｒ１を直列に接続したものを、保護用コンタクタ３１と
並列に接続する。これはトランス１８の一次コイル１９
に三相交流電源を印加したとき、二次コイル２０に電圧
が生じる。スイッチング素子Ｑ１，Ｑ２，Ｑ３，Ｑ４，
Ｑ５，Ｑ６の逆接ダイオードは三相全波整流回路を構成
している。充電電圧ＶＣが生じる。それでバッテリ１の
電圧ＶＢが異常に低いと過大電流が流れる。制御不能と
なる。(+) Protective contactor 31 from power supply line 2
To the (+) line 30 via The diode D1 and the resistor R1 connected in series are connected in parallel with the protection contactor 31. This is the primary coil 19 of the transformer 18
When a three-phase AC power source is applied to the power supply, a voltage is generated in the secondary coil 20. Switching elements Q1, Q2, Q3, Q4
The reverse connection diodes of Q5 and Q6 constitute a three-phase full-wave rectifier circuit. A charging voltage VC occurs. Therefore, when the voltage VB of the battery 1 is abnormally low, an excessive current flows. You lose control.
【００３３】これを防止するため保護用コンタクタ３１
の接点を開きダイオードＤ１と抵抗Ｒ１を介して充電電
流を流す。To prevent this, the protective contactor 31
Is opened, and a charging current flows through the diode D1 and the resistor R1.
【００３４】バッテリ１の電圧ＶＢが充電電圧ＶＣに近
づいてきたとき保護用コンタクタ３１の接点を閉じる。When the voltage VB of the battery 1 approaches the charging voltage VC, the contact of the protection contactor 31 is closed.
【００３５】通常の使用ではバッテリ１の電圧ＶＢは開
放電圧を示し、充電電圧ＶＣの設定値を０.５＊ＶＢか
ら０.８＊ＶＢの値とする。In normal use, the voltage VB of the battery 1 indicates an open voltage, and the set value of the charging voltage VC is set to a value from 0.5 * VB to 0.8 * VB.
【００３６】トランス１８の二次コイル２０に漏洩イン
ダクタンス３２，漏洩インダクタンス３３，漏洩インダ
クタンス３４がある。スイッチング素子を導通させるこ
とでインダクタンスにエネルギを蓄えスイッチング素子
を遮断することでバッテリ１の電圧ＶＢより大きくして
バッテリ１に充電電流を流す。The secondary coil 20 of the transformer 18 has a leakage inductance 32, a leakage inductance 33, and a leakage inductance. By making the switching element conductive, energy is stored in the inductance, and the switching element is cut off to make the voltage higher than the voltage VB of the battery 1 so that a charging current flows to the battery 1.
【００３７】図４は制御回路のブロック図を示す。充電
制御を主体とする。FIG. 4 shows a block diagram of the control circuit. Mainly charge control.
【００３８】（＋）電源線２からキースイッチ４１を介
し制御回路４０の電源回路４２に接続される。キースイ
ッチ４１と並列にリレー４３の接点４４を接続する。
［リレー４３の接点４５は入力回路４７に接続され
る。］ リレー４３のコイル４６は図１に示したダイオードブリ
ッジ２１に接続される。(+) The power supply line 2 is connected to the power supply circuit 42 of the control circuit 40 via the key switch 41. The contact 44 of the relay 43 is connected in parallel with the key switch 41.
[The contact 45 of the relay 43 is connected to the input circuit 47. The coil 46 of the relay 43 is connected to the diode bridge 21 shown in FIG.
【００３９】測定用トランスなどを有する入力回路４８
は三相交流電源１７に接続し、入力回路４９はバッテリ
電圧や電流センサなどの信号に接続する。An input circuit 48 having a measuring transformer and the like
Is connected to the three-phase AC power supply 17, and the input circuit 49 is connected to signals such as a battery voltage and a current sensor.
【００４０】入力回路４７は、操作パネル５０の充電電
流の最大値を規定したり充電開始の信号に接続する。The input circuit 47 defines the maximum value of the charging current of the operation panel 50 and is connected to a charging start signal.
【００４１】以上各入力回路で信号処理された信号はマ
イコン５１に入力される。マイコン５１で処理された信
号は出力回路５２で増幅され、各スイッチング素子Ｑや
保護用コンタクタ３１のコイルを通電し動作を行わせ
る。The signals processed by the respective input circuits are input to the microcomputer 51. The signal processed by the microcomputer 51 is amplified by the output circuit 52, and the switching element Q and the coil of the protection contactor 31 are energized to perform an operation.
【００４２】制御回路４０は走行時も充電時も使用でき
るので小形化できる。Since the control circuit 40 can be used both during traveling and during charging, the size can be reduced.
【００４３】図５は充電制御のフローチャートを示す。FIG. 5 shows a flowchart of the charge control.
【００４４】三相交流電源１８に電圧が印加されたかど
うかは、ダイオードブリッジ２１に接続されたリレー４
３のコイルに通電されて接点４５が閉じたかどうかで決
まる。イニシャルチェックは記載しない。また通電制御
内容も記載していない。Whether the voltage is applied to the three-phase AC power supply 18 depends on whether the relay 4 connected to the diode bridge 21
3 is determined by whether the coil 45 is energized and the contact 45 is closed. The initial check is not described. Also, the content of the energization control is not described.
【００４５】[0045]
【発明の効果】本発明によれば充電装置を小形にでき
る。According to the present invention, the charging device can be downsized.
【図１】本発明の一実施例の電気車の回路図。FIG. 1 is a circuit diagram of an electric vehicle according to an embodiment of the present invention.
【図２】本発明の他の実施例の電気車の回路図。FIG. 2 is a circuit diagram of an electric vehicle according to another embodiment of the present invention.
【図３】充電時の回路図。FIG. 3 is a circuit diagram at the time of charging.
【図４】制御回路のブロック図。FIG. 4 is a block diagram of a control circuit.
【図５】充電時の制御フローチャート。FIG. 5 is a control flowchart at the time of charging.
１…バッテリ、２…（＋）電源線、３…（−）電源線、
４…スイッチング素子、５…アーム、６…半導体スイッ
チング装置、７…コンタクタ、８，９，１０…接点、１
１，１２，１３…電流センサ、１４…直流モータ、１５
…半導体スイッチング装置、１６…交流モータ、１７…
三相交流電源、１８…トランス、１９…一次コイル、２
０…二次コイル、２１…ダイオードブリッジ、２２…コ
イル。1 ... battery, 2 ... (+) power line, 3 ... (-) power line,
4 switching element, 5 arm, 6 semiconductor switching device, 7 contactor, 8, 9, 10 contact, 1
1, 12, 13 ... current sensor, 14 ... DC motor, 15
... Semiconductor switching device, 16 ... AC motor, 17 ...
Three-phase AC power supply, 18 transformer, 19 primary coil, 2
0: secondary coil, 21: diode bridge, 22: coil.
Claims (3)
の複数個のモータ、モータの電流を制御する各々の半導
体スイッチング装置、前記半導体スイッチング装置のア
ームのスイッチング素子をオン・オフするマイコンを含
む制御回路、三相交流電源を入力とするバッテリ充電装
置を有する電気車制御装置において、 一次コイルを三相交流電源に接続し二次コイルで絶縁し
たトランス、充電時に動作するコンタクタ、前記コンタ
クタの接点を介して前記トランスの二次コイルから前記
半導体スイッチング装置のアームに接続したことを特徴
とする電気車のスイッチング装置を兼用した充電装置。A control circuit including a plurality of motors of a battery, a DC motor or an AC motor, respective semiconductor switching devices for controlling the current of the motors, a microcomputer for turning on / off a switching element of an arm of the semiconductor switching device; An electric vehicle control device having a battery charging device having a three-phase AC power supply as an input, comprising: a transformer in which a primary coil is connected to a three-phase AC power source and insulated by a secondary coil, a contactor that operates during charging, and a contact of the contactor. A charging device serving also as a switching device of an electric vehicle, wherein a secondary coil of the transformer is connected to an arm of the semiconductor switching device.
次コイルを前記コンタクタの接点から前記交流モータの
前記半導体スイッチング装置のアームと前記直流モータ
の前記半導体スイッチング装置のアームに接続する電気
車のスイッチング装置を兼用した充電装置。2. The electric vehicle according to claim 1, wherein the secondary coil of the transformer is connected from a contact of the contactor to an arm of the semiconductor switching device of the AC motor and an arm of the semiconductor switching device of the DC motor. A charging device that also serves as a switching device.
次コイルを前記コンタクタの接点から前記各３個のモー
タの前記半導体スイッチング装置のアームに接続する電
気車のスイッチング装置を兼用した充電装置。3. The charging device according to claim 1, wherein the secondary coil of the transformer is connected from a contact point of the contactor to an arm of the semiconductor switching device of each of the three motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8191778A JPH1042408A (en) | 1996-07-22 | 1996-07-22 | Device used both as charging and switching for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8191778A JPH1042408A (en) | 1996-07-22 | 1996-07-22 | Device used both as charging and switching for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1042408A true JPH1042408A (en) | 1998-02-13 |
Family
ID=16280385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8191778A Pending JPH1042408A (en) | 1996-07-22 | 1996-07-22 | Device used both as charging and switching for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1042408A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755267B2 (en) | 2000-12-06 | 2004-06-29 | Hitachi, Lyd. | Electric vehicle and control device thereof |
| JP2006136072A (en) * | 2004-11-04 | 2006-05-25 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Battery charging apparatus for hybrid construction machine |
| CN105235546A (en) * | 2015-11-18 | 2016-01-13 | 南车资阳机车有限公司 | Electric main driving system for 1000kW power level pure electric alternating current driving switch engine |
-
1996
- 1996-07-22 JP JP8191778A patent/JPH1042408A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755267B2 (en) | 2000-12-06 | 2004-06-29 | Hitachi, Lyd. | Electric vehicle and control device thereof |
| JP2006136072A (en) * | 2004-11-04 | 2006-05-25 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Battery charging apparatus for hybrid construction machine |
| JP4485909B2 (en) * | 2004-11-04 | 2010-06-23 | 住友建機株式会社 | Battery charger for hybrid construction machines |
| CN105235546A (en) * | 2015-11-18 | 2016-01-13 | 南车资阳机车有限公司 | Electric main driving system for 1000kW power level pure electric alternating current driving switch engine |
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