JP2017216769A - Interlock device for electric vehicle - Google Patents

Interlock device for electric vehicle Download PDF

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JP2017216769A
JP2017216769A JP2016107417A JP2016107417A JP2017216769A JP 2017216769 A JP2017216769 A JP 2017216769A JP 2016107417 A JP2016107417 A JP 2016107417A JP 2016107417 A JP2016107417 A JP 2016107417A JP 2017216769 A JP2017216769 A JP 2017216769A
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vehicle
plug
charging plug
drive circuit
charging
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JP6565792B2 (en
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博之 牛田
Hiroyuki Ushida
博之 牛田
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Toyota Industries Corp
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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
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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

Abstract

PROBLEM TO BE SOLVED: To provide an interlock device for an electric vehicle, which is able to charge an electric vehicle so as not to actuate a drive circuit of the electric vehicle.SOLUTION: An interlock device 10 comprises: a vehicle plug 20 connected to an on-vehicle battery device 11 and a drive circuit 15 of an electric vehicle; a charging plug 21 connected to the drive circuit in parallel with the vehicle plug 20 and connectable to a charging device 30; a first electromagnetic contactor 22 that electrically disconnects/connects the on-vehicle battery device 11 and the drive circuit 15; a control device 23 that controls opening/closing of the first electromagnetic contactor 22; a vehicle key detector 24 connected to the control device 23 and turned on/off in conjunction with on/off of a vehicle key of the electric vehicle; and a charging plug cover detector 25 connected to the control device 23 independently from the vehicle key detector 24 and turned on/off in conjunction with opening/closing of a charging plug cover. On the basis of on/off of the charging plug cover detector 25 and the vehicle key detector 24, the control device 23 controls opening/closing of the first electromagnetic contactor 22.SELECTED DRAWING: Figure 1

Description

この発明は、電動車両の安全装置としての電動車両用インターロック装置に関する。   The present invention relates to an interlock device for an electric vehicle as a safety device for the electric vehicle.

例えば、特許文献１には、バッテリプラグと並列接続した充電プラグを設け、バッテリプラグと充電プラグの間に整流素子を配置したバッテリ搭載型電機式産業車両のインターロック装置が開示されている。特許文献１に開示されたインターロック装置では、バッテリプラグと制御回路の入力側との間にインターロックリレー回路を設け、インターロックリレー回路中に安定化電源を設け、安定化電源でインターロック用リレーを作動するようにしている。   For example, Patent Literature 1 discloses an interlock device for a battery-mounted electric industrial vehicle in which a charging plug connected in parallel with a battery plug is provided and a rectifying element is disposed between the battery plug and the charging plug. In the interlock device disclosed in Patent Document 1, an interlock relay circuit is provided between the battery plug and the input side of the control circuit, a stabilized power source is provided in the interlock relay circuit, and the stabilized power source is used for interlocking. The relay is activated.

特許文献１のインターロック装置では、制御回路に接続されたインターロックリレー回路が設けられたことにより、充電中に誤ってキースイッチを入れたり、レバー操作をしたとしても、あるいは、キースイッチを入れたまま充電操作をしても、制御回路に接続された駆動回路は作動しないようにしている。   In the interlock device of Patent Document 1, the interlock relay circuit connected to the control circuit is provided, so that even if the key switch is accidentally turned on or the lever is operated during charging, the key switch is turned on. The drive circuit connected to the control circuit does not operate even if the charging operation is performed.

特開２０００−４５０６号公報JP 2000-4506 A

特許文献１のインターロック装置では、インターロックリレー回路に大電流が流れたこと等によって整流素子が破損してしまうと、バッテリプラグと並列接続された充電プラグを利用して、充電器から車載バッテリに充電することができなくなるという問題がある。   In the interlock device of Patent Document 1, if the rectifying element is damaged due to a large current flowing through the interlock relay circuit, the battery is connected from the charger to the vehicle-mounted battery using the charge plug connected in parallel with the battery plug. There is a problem that it becomes impossible to charge.

本発明は上記の問題点に鑑みてなされたもので、本発明の目的は、電動車両の駆動回路を作動させないように電動車両を充電することができる電動車両用インターロック装置の提供にある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an interlock device for an electric vehicle that can charge the electric vehicle so as not to operate the drive circuit of the electric vehicle.

上記の課題を解決するために、本発明は、電動車両の車載バッテリ装置と前記電動車両を駆動させる前記電動車両の駆動回路とに接続された車両プラグと、前記車両プラグと並列に駆動回路に接続され、前記電動車両とは別に設置された充電装置に接続可能な充電プラグと、前記車両プラグと前記駆動回路との間に設けられ、開閉することにより前記車載バッテリ装置と前記駆動回路との間の遮断通電を行う第１電磁接触器と、前記第１電磁接触器の開閉を制御する制御装置と、前記制御装置と接続され、前記電動車両の車両キーのオンオフと連動してオンオフされる車両キー検知器と、前記車両キー検知器と独立して前記制御装置に接続され、前記充電プラグを覆う充電プラグカバーの開閉と連動してオンオフされる充電プラグカバー検知器と、を備え、前記制御装置は、前記充電プラグカバー検知器のオンオフと前記車両キー検知器のオンオフとに基づき前記第１電磁接触器の開閉を制御することを特徴とする電動車両用インターロック装置。   In order to solve the above problems, the present invention provides a vehicle plug connected to an in-vehicle battery device of an electric vehicle and a drive circuit of the electric vehicle that drives the electric vehicle, and a drive circuit in parallel with the vehicle plug. A charging plug connected to a charging device installed separately from the electric vehicle, and provided between the vehicle plug and the driving circuit, and opened and closed to connect the in-vehicle battery device and the driving circuit. A first electromagnetic contactor that cuts off electricity between them, a control device that controls the opening and closing of the first electromagnetic contactor, and the control device, and is turned on and off in conjunction with turning on and off the vehicle key of the electric vehicle. A vehicle key detector and a charge plug cover detection that is connected to the control device independently of the vehicle key detector and is turned on / off in conjunction with opening and closing of a charge plug cover that covers the charge plug And the control device controls opening and closing of the first electromagnetic contactor based on on / off of the charging plug cover detector and on / off of the vehicle key detector. apparatus.

本発明によれば、充電中の電動車両の駆動を防止できる電動車両用インターロック装置を、第１電磁接触器を利用して部品点数を少なく構成することができる。また、制御装置により車両キー検知器のオンオフと充電プラグカバー検知器のオンオフとを独立して把握することができる。   ADVANTAGE OF THE INVENTION According to this invention, the interlock apparatus for electric vehicles which can prevent the drive of the electric vehicle during charge can comprise a small number of parts using a 1st electromagnetic contactor. Further, it is possible to independently grasp on / off of the vehicle key detector and on / off of the charging plug cover detector by the control device.

また、上記の電動車両用インターロック装置において、前記充電プラグと前記車両プラグとの間に設けられ、開閉することにより前記充電装置と前記車載バッテリとの間の遮断通電を行う第２電磁接触器を備え、前記制御装置は、前記第２電磁接触器が接続され、前記充電プラグカバー検知器のオンオフと前記車両キー検知器のオンオフとに基づき前記第２電磁接触器の開閉を制御することを特徴とする。
この場合、電動車両用インターロック装置に第２電磁接触器の許容電流以内であって比較的大きな電流が流れても、電動車両用インターロック装置は破損せず、充電プラグを利用して、電動車両とは別に設置された充電装置から車載バッテリ装置を充電することができる。 In the above-described electric vehicle interlock device, the second electromagnetic contactor is provided between the charging plug and the vehicle plug and opens and closes to cut off current between the charging device and the in-vehicle battery. The control device is connected to the second electromagnetic contactor, and controls opening and closing of the second electromagnetic contactor based on on / off of the charging plug cover detector and on / off of the vehicle key detector. Features.
In this case, even if a relatively large current flows within the allowable current of the second electromagnetic contactor to the electric vehicle interlock device, the electric vehicle interlock device does not break, and the electric plug is The in-vehicle battery device can be charged from a charging device installed separately from the vehicle.

また、上記の電動車両用インターロック装置において、前記車両キー検知器がオン状態、かつ、前記充電プラグカバー検知器がオフ状態のとき、前記制御装置により前記第１電磁接触器を開状態とすることを特徴とする。
この場合、車両キーがオンのとき、電動車両の充電をすることができ、駆動回路は作動されないようにすることができる。 Moreover, in the above-described interlock device for an electric vehicle, when the vehicle key detector is in an on state and the charging plug cover detector is in an off state, the control device opens the first electromagnetic contactor. It is characterized by that.
In this case, when the vehicle key is on, the electric vehicle can be charged and the drive circuit can be prevented from being activated.

また、上記の電動車両用インターロック装置において、前記車両キー検知器がオフ状態のとき、前記制御装置により前記第２電磁接触器を閉状態とすることを特徴とする。
車両キーがオフのとき、第２電磁接触器により充電プラグと車両プラグとの間が通電され、電動車両の充電をすることができる。 Further, in the above-described interlock device for an electric vehicle, when the vehicle key detector is in an off state, the second electromagnetic contactor is closed by the control device.
When the vehicle key is off, the second electromagnetic contactor energizes between the charging plug and the vehicle plug, and the electric vehicle can be charged.

本発明は、電動車両の駆動回路を作動させないように電動車両を充電することができる電動車両用インターロック装置の提供にある。   The present invention provides an interlock device for an electric vehicle that can charge the electric vehicle without operating a drive circuit of the electric vehicle.

本発明の第１の実施形態に係る電動車両用インターロック装置を示す回路概略図である。1 is a circuit schematic diagram illustrating an interlock device for an electric vehicle according to a first embodiment of the present invention. 本発明の第２の実施形態に係る電動車両用インターロック装置を示す回路概略図である。It is the circuit schematic which shows the interlock apparatus for electric vehicles which concerns on the 2nd Embodiment of this invention.

（第１の実施形態）
以下、第１の実施形態に係る電動車両用インターロック装置を図面に基づいて説明する。 (First embodiment)
Hereinafter, the interlock device for electric vehicles concerning a 1st embodiment is explained based on a drawing.

図１は、第１の実施形態の電動車両用インターロック装置１０（以下、インターロック装置１０とする）の電気的構成を示す。インターロック装置１０は、車載バッテリ装置１１と駆動回路１５との間に設けられ、車載バッテリ装置１１と駆動回路１５とに電気的に接続され、駆動回路１５への車載バッテリ装置１１からの電力供給を制御する制御回路である。   FIG. 1 shows an electrical configuration of an electric vehicle interlock device 10 (hereinafter referred to as an interlock device 10) according to a first embodiment. The interlock device 10 is provided between the in-vehicle battery device 11 and the drive circuit 15, is electrically connected to the in-vehicle battery device 11 and the drive circuit 15, and supplies power from the in-vehicle battery device 11 to the drive circuit 15. It is the control circuit which controls.

車載バッテリ装置１１は、車載バッテリ１３とバッテリプラグ１４とを備える。車載バッテリ１３は、電動車両を駆動させる駆動回路１５に供給する電力を充放電する二次電池である。車載バッテリ１３は、バッテリプラグ１４に電気的に接続されている。   The in-vehicle battery device 11 includes an in-vehicle battery 13 and a battery plug 14. The in-vehicle battery 13 is a secondary battery that charges and discharges electric power supplied to the drive circuit 15 that drives the electric vehicle. The in-vehicle battery 13 is electrically connected to the battery plug 14.

インターロック装置１０は、車両プラグ２０と、充電プラグ２１と、駆動回路用コンタクタ２２と、制御装置２３と、車両キースイッチ２４と、充電プラグカバースイッチ２５（以下、カバースイッチ２５とする）と、を備える。車両プラグ２０は、車載バッテリ装置１１のバッテリプラグ１４と電気的に接続されるプラグである。すなわち、車両プラグ２０は、車載バッテリ装置１１と駆動回路１５とに電気的に接続されている。充電プラグ２１は、車両プラグ２０と電気的に並列に接続されている。   The interlock device 10 includes a vehicle plug 20, a charging plug 21, a drive circuit contactor 22, a control device 23, a vehicle key switch 24, a charging plug cover switch 25 (hereinafter referred to as a cover switch 25), Is provided. The vehicle plug 20 is a plug that is electrically connected to the battery plug 14 of the in-vehicle battery device 11. That is, the vehicle plug 20 is electrically connected to the in-vehicle battery device 11 and the drive circuit 15. The charging plug 21 is electrically connected to the vehicle plug 20 in parallel.

充電プラグ２１は、電動車両と別に設置された充電装置３０の充電器プラグ３１と電気的に接続可能なプラグである。充電装置３０は、充電器プラグ３１と、充電器プラグ３１と電気的に接続された充電器３２とを備える。   Charging plug 21 is a plug that can be electrically connected to charger plug 31 of charging device 30 installed separately from the electric vehicle. The charging device 30 includes a charger plug 31 and a charger 32 electrically connected to the charger plug 31.

駆動回路用コンタクタ２２は、大電流が流れる回路の開閉を行う電磁接触器である。駆動回路用コンタクタ２２は、車両プラグ２０と駆動回路１５との間に設けられ、開閉することにより車載バッテリ装置１１と駆動回路１５との間の通電又は遮断を行う。駆動回路用コンタクタ２２は、常開接点２６と励磁コイル２７とを備える。常開接点２６は、電動車両の駆動回路１５に接続されている。駆動回路用コンタクタ２２は、励磁コイル２７が通電されると常開接点２６を閉じて閉状態となり、インターロック装置１０の車両プラグ２０を介して車載バッテリ装置１１と駆動回路１５との間の通電を行う。励磁コイル２７は、制御装置２３と電気的に接続されており、制御装置２３は、励磁コイル２７の通電を制御して、駆動回路用コンタクタの開閉を制御する。本実施形態の駆動回路用コンタクタ２２は、本発明の第１電磁接触器である。   The drive circuit contactor 22 is an electromagnetic contactor that opens and closes a circuit through which a large current flows. The drive circuit contactor 22 is provided between the vehicle plug 20 and the drive circuit 15, and opens or closes to energize or shut off the in-vehicle battery device 11 and the drive circuit 15. The drive circuit contactor 22 includes a normally open contact 26 and an excitation coil 27. The normally open contact 26 is connected to the drive circuit 15 of the electric vehicle. When the excitation coil 27 is energized, the drive circuit contactor 22 closes the normally-open contact 26 and closes, and the drive circuit contactor 22 is energized between the in-vehicle battery device 11 and the drive circuit 15 via the vehicle plug 20 of the interlock device 10. I do. The excitation coil 27 is electrically connected to the control device 23, and the control device 23 controls energization of the excitation coil 27 to control the opening / closing of the drive circuit contactor. The drive circuit contactor 22 of the present embodiment is the first electromagnetic contactor of the present invention.

制御装置２３は、駆動回路用コンタクタ２２の励磁コイル２７に加えて、車両キースイッチ２４とカバースイッチ２５とに電気的に接続されている。カバースイッチ２５は、車両キースイッチ２４とは直列接続されておらず、車両キースイッチ２４と独立して制御装置に電気的に接続されている。制御装置２３は、車両キースイッチ２４の開閉とカバースイッチ２５の開閉とを把握する。本実施形態の車両キースイッチ２４は、本発明の車両キー検知器である。車両キースイッチ２４の開状態は車両キー検知器のオフ状態であり、車両キースイッチ２４の閉状態は車両キー検知器のオン状態である。本実施形態のカバースイッチ２５は、本発明の充電プラグカバー検知器である。カバースイッチ２５の開状態は充電プラグカバー検知器のオフ状態であり、カバースイッチ２５の閉状態は充電プラグカバー検知器のオン状態である。   The control device 23 is electrically connected to the vehicle key switch 24 and the cover switch 25 in addition to the excitation coil 27 of the drive circuit contactor 22. The cover switch 25 is not connected in series with the vehicle key switch 24 and is electrically connected to the control device independently of the vehicle key switch 24. The control device 23 grasps the opening / closing of the vehicle key switch 24 and the opening / closing of the cover switch 25. The vehicle key switch 24 of this embodiment is a vehicle key detector of the present invention. The open state of the vehicle key switch 24 is an off state of the vehicle key detector, and the closed state of the vehicle key switch 24 is an on state of the vehicle key detector. The cover switch 25 of the present embodiment is a charging plug cover detector of the present invention. The open state of the cover switch 25 is an off state of the charging plug cover detector, and the closed state of the cover switch 25 is an on state of the charging plug cover detector.

車両キースイッチ２４は、車両キーのオンオフと連動して開閉されるスイッチである。具体的には、車両キースイッチ２４は、車両キーがオンとされた場合に閉状態となり、車両キーがオフとされた場合に開状態となる。   The vehicle key switch 24 is a switch that is opened and closed in conjunction with the on / off of the vehicle key. Specifically, the vehicle key switch 24 is closed when the vehicle key is turned on, and is opened when the vehicle key is turned off.

カバースイッチ２５は、充電プラグ２１を覆う充電プラグカバー（図示しない）の開閉と連動して開閉されるスイッチである。具体的には、カバースイッチ２５は、充電プラグカバーが開けられると開状態となり、充電プラグカバーが閉められると閉状態となる。充電プラグカバーは、充電プラグ２１の接触による短絡を防止するため充電プラグ２１を保護するために覆うことができるカバーである。   The cover switch 25 is a switch that is opened and closed in conjunction with opening and closing of a charging plug cover (not shown) that covers the charging plug 21. Specifically, the cover switch 25 is opened when the charging plug cover is opened, and is closed when the charging plug cover is closed. The charging plug cover is a cover that can be covered to protect the charging plug 21 in order to prevent a short circuit due to contact with the charging plug 21.

制御装置２３は、車両キースイッチ２４の開閉とカバースイッチ２５の開閉とに基づき駆動回路用コンタクタ２２の開閉を制御して、車載バッテリ装置１１と駆動回路１５との間の通電又は遮断を制御する。具体的には、制御装置２３は、車両キースイッチ２４が閉状態とされ、かつ、カバースイッチ２５が閉状態の場合に、駆動回路用コンタクタ２２の励磁コイル２７を通電して駆動回路用コンタクタ２２を閉状態とし、車載バッテリ装置１１と駆動回路１５との間の通電を行う。また、制御装置２３は、車両キースイッチ２４が閉状態とされても、カバースイッチ２５が開状態の場合には、駆動回路用コンタクタ２２の励磁コイル２７を通電せず駆動回路用コンタクタ２２を開状態とし、車載バッテリ装置１１と駆動回路１５との間の遮断を行う。また、制御装置２３は、車両キースイッチ２４が開状態とされた場合には、駆動回路用コンタクタ２２の励磁コイル２７を通電せず駆動回路用コンタクタ２２を開状態とし、車載バッテリ装置１１と駆動回路１５との間の遮断を行う。   The control device 23 controls the opening / closing of the contactor 22 for the drive circuit based on the opening / closing of the vehicle key switch 24 and the opening / closing of the cover switch 25, thereby controlling energization or disconnection between the in-vehicle battery device 11 and the drive circuit 15. . Specifically, the control device 23 energizes the excitation coil 27 of the drive circuit contactor 22 to energize the drive circuit contactor 22 when the vehicle key switch 24 is closed and the cover switch 25 is closed. Is closed and energization is performed between the in-vehicle battery device 11 and the drive circuit 15. Further, the control device 23 opens the drive circuit contactor 22 without energizing the excitation coil 27 of the drive circuit contactor 22 when the cover switch 25 is open even if the vehicle key switch 24 is closed. The vehicle battery device 11 and the drive circuit 15 are disconnected from each other. Further, when the vehicle key switch 24 is in the open state, the control device 23 does not energize the excitation coil 27 of the drive circuit contactor 22 and opens the drive circuit contactor 22 to drive with the in-vehicle battery device 11. The circuit 15 is disconnected.

以上の構成を有するインターロック装置１０の作用について以下に説明する。
車載バッテリ装置１１の車載バッテリ１３を充電する際には、電動車両の運転者により、車両キーが開状態とされ、電動車両の充電プラグカバーが開けられて、電動車両と別に設置された充電装置３０の充電器プラグ３１がインターロック装置１０の充電プラグ２１と接続される。充電プラグ２１はバッテリプラグ１４と並列に電気的に接続されており、バッテリプラグ１４は車両プラグ２０に接続されたまま、充電プラグ２１を利用して車載バッテリ１３の充電が可能となっている。このとき、車両キーがオフとされているので車両キースイッチ２４は開状態である。駆動回路用コンタクタ２２の励磁コイル２７は通電されておらず、常開接点２６は開いており駆動回路用コンタクタ２２は開状態であり、車載バッテリ装置１１と駆動回路１５との間の遮断が行われ、車両の駆動回路１５には車載バッテリ１３や充電装置３０からの電力が供給されない状態である。そして、充電器３２の電力は、充電器プラグ３１、充電プラグ２１、車両プラグ２０及びバッテリプラグ１４を介して、車載バッテリ１３に供給され、車載バッテリ１３が充電される。 The operation of the interlock device 10 having the above configuration will be described below.
When charging the in-vehicle battery 13 of the in-vehicle battery device 11, the electric vehicle driver opens the vehicle key, opens the charging plug cover of the electric vehicle, and is installed separately from the electric vehicle. Thirty charger plugs 31 are connected to the charging plug 21 of the interlock device 10. The charging plug 21 is electrically connected in parallel with the battery plug 14, and the in-vehicle battery 13 can be charged using the charging plug 21 while the battery plug 14 is connected to the vehicle plug 20. At this time, since the vehicle key is turned off, the vehicle key switch 24 is open. The excitation coil 27 of the drive circuit contactor 22 is not energized, the normally open contact 26 is open and the drive circuit contactor 22 is open, and the in-vehicle battery device 11 and the drive circuit 15 are disconnected. In other words, power from the vehicle-mounted battery 13 and the charging device 30 is not supplied to the drive circuit 15 of the vehicle. And the electric power of the charger 32 is supplied to the vehicle-mounted battery 13 via the charger plug 31, the charge plug 21, the vehicle plug 20, and the battery plug 14, and the vehicle-mounted battery 13 is charged.

車載バッテリ１３の充電を終了する際には、運転者等により充電器プラグ３１が充電プラグ２１から離され、充電プラグカバーが閉じられる。このとき、充電プラグカバーが閉じられてカバースイッチ２５は閉状態となる。そして、運転者が車両キーをオンとすると車両キースイッチ２４は閉状態となり、制御装置２３により駆動回路用コンタクタ２２の励磁コイル２７は通電されて常開接点２６が閉じられて駆動回路用コンタクタ２２は閉状態となる。このとき、車載バッテリ装置１１と駆動回路１５との間の通電が行われ、車載バッテリ１３の電力は電動車両の駆動回路１５に供給可能な状態となる。   When the charging of the in-vehicle battery 13 is finished, the charger plug 31 is separated from the charging plug 21 by the driver or the like, and the charging plug cover is closed. At this time, the charging plug cover is closed and the cover switch 25 is closed. When the driver turns on the vehicle key, the vehicle key switch 24 is closed, and the control device 23 energizes the excitation coil 27 of the drive circuit contactor 22 to close the normally open contact 26, thereby driving the drive circuit contactor 22. Is closed. At this time, energization between the in-vehicle battery device 11 and the drive circuit 15 is performed, and the electric power of the in-vehicle battery 13 can be supplied to the drive circuit 15 of the electric vehicle.

電動車両を停止させる際には、車両キーをオフとする。このとき、車両キーをオフとするので車両キースイッチ２４は開状態であり、制御装置２３により駆動回路用コンタクタ２２の励磁コイル２７の通電が止められて、常開接点２６は開けられており駆動回路用コンタクタ２２は開状態である。このとき、車載バッテリ装置１１と駆動回路１５との間の遮断が行われている。   When stopping the electric vehicle, the vehicle key is turned off. At this time, since the vehicle key is turned off, the vehicle key switch 24 is in the open state, the control device 23 stops the energization of the exciting coil 27 of the drive circuit contactor 22, and the normally open contact 26 is opened. The circuit contactor 22 is in an open state. At this time, the in-vehicle battery device 11 and the drive circuit 15 are disconnected.

本実施形態では、以下の作用効果を奏する。
（１）車載バッテリ装置１１の車載バッテリ１３を充電する際には、駆動回路用コンタクタ２２により電動車両の駆動回路１５と車載バッテリ装置１１との遮断を行う。したがって、充電中の電動車両の駆動を防止できるインターロック装置１０を、駆動回路用コンタクタ２２を利用して部品点数を少なく構成することができ、コストを低減することができる。 In the present embodiment, the following effects are obtained.
(1) When charging the vehicle-mounted battery 13 of the vehicle-mounted battery device 11, the drive circuit contactor 22 cuts off the drive circuit 15 of the electric vehicle and the vehicle-mounted battery device 11. Therefore, the interlock device 10 that can prevent driving of the electric vehicle during charging can be configured with a small number of parts by using the drive circuit contactor 22, and the cost can be reduced.

（２）制御装置２３には、車両キースイッチ２４が電気的に接続され、カバースイッチ２５が車両キースイッチ２４と独立して電気的に接続されている。したがって、制御装置２３により車両キースイッチ２４の開閉とカバースイッチ２５との開閉を独立して把握することができる。 (2) The vehicle key switch 24 is electrically connected to the control device 23, and the cover switch 25 is electrically connected independently of the vehicle key switch 24. Therefore, the control device 23 can grasp the opening / closing of the vehicle key switch 24 and the opening / closing of the cover switch 25 independently.

（３）車両キースイッチ２４が閉状態、かつ、カバースイッチ２５が開状態のとき、制御装置２３により駆動回路用コンタクタ２２を開状態とする。したがって、車両キーがオンであっても、充電プラグカバーが開けられると、電動車両の駆動回路１５を車載バッテリ装置１１から遮断して駆動回路１５を作動させないようにして、電動車両の充電をすることができる。 (3) When the vehicle key switch 24 is closed and the cover switch 25 is open, the drive circuit contactor 22 is opened by the control device 23. Therefore, even if the vehicle key is on, when the charging plug cover is opened, the electric vehicle is charged by disconnecting the drive circuit 15 of the electric vehicle from the in-vehicle battery device 11 and not operating the drive circuit 15. be able to.

（第２の実施形態）
次に、第２の実施形態について説明する。
本実施形態は、第１の実施形態のインターロック装置１０に充電プラグ２１に電気的に接続された充電プラグ用コンタクタを追加した例である。本実施形態では、第１の実施形態と同じ要素については、第１の実施形態の説明を援用し共通の符号を用いて説明する。 (Second Embodiment)
Next, a second embodiment will be described.
The present embodiment is an example in which a charging plug contactor electrically connected to the charging plug 21 is added to the interlock device 10 of the first embodiment. In the present embodiment, the same elements as those in the first embodiment will be described using the same reference numerals with reference to the description of the first embodiment.

図２は、第２の実施形態の電動車両用インターロック装置５０（以下、インターロック装置５０とする）を示す。インターロック装置５０には、充電プラグ用コンタクタ５２が追加されている。充電プラグ用コンタクタ５２は、車両プラグ２０と充電プラグ２１との間に設けられ、開閉することにより充電プラグ２１と車載バッテリ装置１１との間の通電又は遮断を行う。充電プラグ用コンタクタ５２は、常閉接点５３と励磁コイル５４とを備え、常閉接点５３は、車両プラグ２０と充電プラグ２１との間を電気的に接続している。励磁コイル５４は、制御装置５５に電気的に接続されている。充電プラグ用コンタクタ５２は、励磁コイル５４が通電されると常閉接点５３を開いて開状態となり、充電プラグ２１と車載バッテリ装置１１と接続された車両プラグ２０との間の遮断を行う。本実施形態の充電プラグ用コンタクタ５２は、本発明の第２電磁接触器である。   FIG. 2 shows an interlock device 50 for an electric vehicle (hereinafter referred to as an interlock device 50) according to a second embodiment. A charging plug contactor 52 is added to the interlock device 50. The charging plug contactor 52 is provided between the vehicle plug 20 and the charging plug 21 and opens or closes to energize or shut off the charging plug 21 and the in-vehicle battery device 11. The charging plug contactor 52 includes a normally closed contact 53 and an exciting coil 54, and the normally closed contact 53 electrically connects the vehicle plug 20 and the charging plug 21. The exciting coil 54 is electrically connected to the control device 55. When the exciting coil 54 is energized, the charging plug contactor 52 opens the normally closed contact 53 to open the charging plug 21 and the vehicle plug 20 connected to the in-vehicle battery device 11. The contactor 52 for charge plugs of this embodiment is the 2nd electromagnetic contactor of this invention.

制御装置５５は、車両キースイッチ２４の開閉とカバースイッチ２５の開閉とを把握して、駆動回路用コンタクタ２２の励磁コイル２７に加えて、充電プラグ用コンタクタ５２の励磁コイル５４の通電を制御する。具体的には、制御装置５５は、車両キースイッチ２４が閉状態、かつ、カバースイッチ２５が閉状態の場合には、充電プラグ用コンタクタ５２の励磁コイル５４を通電して充電プラグ用コンタクタ５２を開状態とし、充電プラグ２１と車両プラグ２０との間の遮断を行う。制御装置５５は、車両キースイッチ２４が閉状態、かつ、カバースイッチ２５が開状態の場合には、充電プラグ用コンタクタ５２の励磁コイル５４を通電せずに充電プラグ用コンタクタ５２を閉状態とし、充電プラグ２１と車両プラグ２０との間の通電を行う。制御装置５５は、車両キースイッチ２４が開状態の場合には、充電プラグ用コンタクタ５２の励磁コイル５４を通電せずに充電プラグ用コンタクタ５２を閉状態とし、充電プラグ２１と車両プラグ２０との間の通電を行う。   The control device 55 grasps the opening / closing of the vehicle key switch 24 and the opening / closing of the cover switch 25 and controls the energization of the excitation coil 54 of the contactor 52 for charging plug in addition to the excitation coil 27 of the contactor 22 for driving circuit. . Specifically, when the vehicle key switch 24 is closed and the cover switch 25 is closed, the control device 55 energizes the exciting coil 54 of the charging plug contactor 52 to cause the charging plug contactor 52 to be turned on. The open state is established, and the charging plug 21 and the vehicle plug 20 are disconnected. When the vehicle key switch 24 is closed and the cover switch 25 is open, the control device 55 closes the charging plug contactor 52 without energizing the excitation coil 54 of the charging plug contactor 52, Energization between the charging plug 21 and the vehicle plug 20 is performed. When the vehicle key switch 24 is in the open state, the control device 55 closes the charging plug contactor 52 without energizing the exciting coil 54 of the charging plug contactor 52, and connects the charging plug 21 and the vehicle plug 20. Energize between.

以上の構成を有するインターロック装置５０の作用について以下に説明する。
電動車両を走行させる際には、車両キーをオンとし、充電プラグカバーは閉められている。このとき、車両キーをオンとするので車両キースイッチ２４は閉状態であり、また、充電プラグカバーが閉められているのでカバースイッチ２５は閉状態である。制御装置５５は、車両キースイッチ２４の閉状態とカバースイッチ２５の閉状態とを把握して、充電プラグ用コンタクタ５２の励磁コイル５４を通電させて常閉接点５３を開き、充電プラグ用コンタクタ５２は開状態となり、充電プラグ２１と車両プラグ２０との間の遮断を行う。 The operation of the interlock device 50 having the above configuration will be described below.
When running the electric vehicle, the vehicle key is turned on and the charging plug cover is closed. At this time, the vehicle key switch 24 is closed because the vehicle key is turned on, and the cover switch 25 is closed because the charging plug cover is closed. The control device 55 grasps the closed state of the vehicle key switch 24 and the closed state of the cover switch 25, energizes the excitation coil 54 of the charging plug contactor 52 to open the normally closed contact 53, and the charging plug contactor 52. Is opened, and the charging plug 21 and the vehicle plug 20 are disconnected.

電動車両を停止させる際には、車両キーをオフとする。このとき、車両キーをオフとするので車両キースイッチ２４は開状態である。制御装置５５は、車両キースイッチ２４の開状態を把握して、充電プラグ用コンタクタ５２の励磁コイル５４の通電を止めて常閉接点５３を閉じて充電プラグコンタクタ５２を閉状態とし、充電プラグ２１と車両プラグ２０との間の通電を行う。   When stopping the electric vehicle, the vehicle key is turned off. At this time, since the vehicle key is turned off, the vehicle key switch 24 is open. The control device 55 grasps the open state of the vehicle key switch 24, stops energization of the exciting coil 54 of the charging plug contactor 52, closes the normally closed contact 53, closes the charging plug contactor 52, and closes the charging plug 21. And the vehicle plug 20 are energized.

そして、電動車両と別に設置された充電装置３０により車載バッテリ装置１１を充電する際には、電動車両の運転者等により、充電プラグカバーが開けられて、充電装置３０の充電器プラグ３１が充電プラグ２１と接続される。このとき、車両キーがオフであるので車両キースイッチ２４は開状態であり、また、充電プラグカバーが開けられているのでカバースイッチ２５は開状態である、制御装置５５は、車両キースイッチ２４が開状態を維持しているので、充電プラグ用コンタクタ５２の励磁コイル５４の通電を止めたままであり、常閉接点５３は閉じられており充電プラグ用コンタクタ５２を閉状態のままとし、充電プラグ２１と車載バッテリ装置１１との間の通電が行われている。充電装置３０の充電器３２の電力は、充電器プラグ３１、充電プラグ２１、車両プラグ２０及びバッテリプラグ１４を介して、車載バッテリ１３に供給されて、車載バッテリ１３が充電される。   When charging the in-vehicle battery device 11 by the charging device 30 installed separately from the electric vehicle, the charging plug cover is opened by the driver of the electric vehicle and the charger plug 31 of the charging device 30 is charged. Connected with the plug 21. At this time, since the vehicle key is off, the vehicle key switch 24 is in an open state, and since the charging plug cover is opened, the cover switch 25 is in an open state. Since the open state is maintained, the energization of the exciting coil 54 of the charging plug contactor 52 remains off, the normally closed contact 53 is closed, the charging plug contactor 52 remains closed, and the charging plug 21 And the in-vehicle battery device 11 are energized. The electric power of the charger 32 of the charging device 30 is supplied to the in-vehicle battery 13 through the charger plug 31, the charging plug 21, the vehicle plug 20, and the battery plug 14, and the in-vehicle battery 13 is charged.

また、車両キーをオンとしていても、電動車両が停止中等であって、車載バッテリ装置１１を充電する場合は、運転者等により、充電プラグカバーが開けられて、充電装置３０の充電器プラグ３１が充電プラグ２１と接続される。このとき、車両キーがオンであるので車両キースイッチ２４は閉状態であり、また、充電プラグカバーが開けられているのでカバースイッチ２５は開状態である。制御装置５５は、車両キースイッチ２４の閉状態とカバースイッチ２５の開状態とを把握して、充電プラグ用コンタクタ５２の励磁コイル５４の通電を止め、常閉接点５３を閉じて充電プラグ用コンタクタ５２を閉状態とし、充電プラグ２１と車載バッテリ装置１１との間の通電を行う。このとき、制御装置５５は駆動回路に電力が供給されないように駆動回路用コンタクタ２２は開状態にする。そして、充電装置３０の充電器３２の電力は、充電器プラグ３１、充電プラグ２１、車両プラグ２０及びバッテリプラグ１４を介して車載バッテリ１３に供給されて、車載バッテリ１３が充電される。   Further, even when the vehicle key is turned on, when the electric vehicle is stopped or the like and the in-vehicle battery device 11 is charged, the charging plug cover is opened by the driver or the like and the charger plug 31 of the charging device 30 is charged. Is connected to the charging plug 21. At this time, since the vehicle key is on, the vehicle key switch 24 is in a closed state, and since the charging plug cover is opened, the cover switch 25 is in an open state. The control device 55 grasps the closed state of the vehicle key switch 24 and the open state of the cover switch 25, stops energization of the exciting coil 54 of the charging plug contactor 52, closes the normally closed contact 53 and closes the charging plug contactor. 52 is closed and energization is performed between the charging plug 21 and the in-vehicle battery device 11. At this time, the control device 55 opens the drive circuit contactor 22 so that power is not supplied to the drive circuit. And the electric power of the charger 32 of the charging device 30 is supplied to the vehicle-mounted battery 13 through the charger plug 31, the charge plug 21, the vehicle plug 20, and the battery plug 14, and the vehicle-mounted battery 13 is charged.

本実施形態では、以下の作用効果を奏する。
（４）電動車両の走行中等の、電動車両と別に設置された充電装置３０により車載バッテリ装置１１を充電しない場合は、充電プラグ２１と車載バッテリ装置１１との間の遮断を行う。したがって、電動車両の走行中等に、車両外部からの衝撃等により充電プラグ２１のプラス側とマイナス側が接触した場合であっても、充電プラグ２１は車載バッテリ装置１１から充電プラグ用コンタクタ５２により電気的に遮断されているので、充電プラグ２１の短絡を防止することができる。 In the present embodiment, the following effects are obtained.
(4) When the in-vehicle battery device 11 is not charged by the charging device 30 installed separately from the electric vehicle, such as when the electric vehicle is running, the charging plug 21 and the in-vehicle battery device 11 are disconnected. Therefore, even when the positive side and the negative side of the charging plug 21 are in contact with each other due to an impact from the outside of the vehicle while the electric vehicle is running, the charging plug 21 is electrically connected to the charging plug contactor 52 from the in-vehicle battery device 11. Therefore, it is possible to prevent the charging plug 21 from being short-circuited.

（５）電動車両の充電中等に充電プラグ２１に大電流が流れても、充電プラグ２１に接続された電磁接触器としての充電プラグ用コンタクタ５２は、許容電流以内であって比較的大容量の電流に耐えられる。したがって、インターロック装置５０に許容電流以内の大きな電流が流れても、インターロック装置５０は破損せず、充電プラグ２１を利用して、電動車両と別に設置された充電装置３０から車載バッテリ装置１１を充電することができる。 (5) Even if a large current flows through the charging plug 21 during charging of the electric vehicle, the charging plug contactor 52 as an electromagnetic contactor connected to the charging plug 21 is within an allowable current and has a relatively large capacity. Withstand current. Therefore, even if a large current within the allowable current flows through the interlock device 50, the interlock device 50 is not damaged, and the in-vehicle battery device 11 is changed from the charging device 30 installed separately from the electric vehicle using the charging plug 21. Can be charged.

本発明は、上記の実施形態に限定されるものではなく発明の趣旨の範囲内で種々の変更が可能であり、例えば、次のように変更してもよい。   The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist of the invention. For example, the following modifications may be made.

○ 上記の実施形態では、制御装置は、車両キースイッチが閉状態とされ、かつ、カバースイッチが閉状態の場合には、駆動回路用コンタクタの励磁コイルを通電して閉状態とし駆動回路へ電力を供給し、車両キースイッチが閉状態とされても、カバースイッチが開状態の場合には、駆動回路用コンタクタの励磁コイルを通電しないで開状態として駆動回路へ電力を供給しないように構成したが、この限りでない。インターロック装置に車速センサ（又は駆動モータの回転センサ）を付加することで、電動車両の走行中に充電プラグカバーが開いても、車速センサの検出に基づき、制御装置により電動車両が走行中であると判断されるときは、駆動回路用コンタクタを開状態に維持するようにしても良い。つまり、車速センサが電動車両の走行中を示すとき、カバースイッチの開閉に関わらず、駆動回路用コンタクタを閉状態に維持して駆動回路への電力供給を続けるようにしても良い。この場合、電動車両の走行中に充電プラグカバーが開いても、駆動回路へ電力が供給され続けており電動車両は走行し続けることができ、駆動回路へ電力が供給されなくなって電動車両が急停止することはない。 In the above embodiment, when the vehicle key switch is in the closed state and the cover switch is in the closed state, the control device energizes the excitation coil of the contactor for the drive circuit to close it, and supplies power to the drive circuit. Even if the vehicle key switch is closed, when the cover switch is in the open state, the drive coil contactor excitation coil is not energized and the drive circuit is not opened to supply power to the drive circuit. However, this is not the case. By adding a vehicle speed sensor (or a rotation sensor of the drive motor) to the interlock device, even if the charging plug cover is opened while the electric vehicle is running, the electric vehicle is running by the control device based on the detection of the vehicle speed sensor. When it is determined that there is, the drive circuit contactor may be kept open. That is, when the vehicle speed sensor indicates that the electric vehicle is traveling, the drive circuit contactor may be kept closed to continue supplying power to the drive circuit regardless of whether the cover switch is opened or closed. In this case, even if the charging plug cover is opened while the electric vehicle is running, electric power continues to be supplied to the drive circuit, and the electric vehicle can continue to run. Never stop.

○ 上記の実施形態では、車両キー検知器として車両キースイッチ２４を用い、充電プラグカバー検知器としてカバースイッチ２５を用いたが、この限りでない。例えば、車両キー検知器として車両キーセンサを用いて車両キーのオンオフを検知し、充電プラグカバー検知器として充電プラグカバー開閉センサを用いて充電プラグカバーの開閉を検知しても良い。 In the above embodiment, the vehicle key switch 24 is used as the vehicle key detector and the cover switch 25 is used as the charging plug cover detector. For example, a vehicle key sensor may be used as a vehicle key detector to detect on / off of the vehicle key, and a charging plug cover opening / closing sensor may be used as a charging plug cover detector to detect opening / closing of the charging plug cover.

１０、５０ 電動車両用インターロック装置
１１ 車載バッテリ装置
１５ 駆動回路
２０ 車両プラグ
２１ 充電プラグ
２２ 駆動回路用コンタクタ（第１電磁接触器としての）
２３、５５ 制御装置
２４ 車両キースイッチ（車両キー検知器としての）
２５ カバースイッチ（充電プラグカバー検知器としての）
３０ 充電装置
５２ 充電プラグ用コンタクタ（第２電磁接触器としての） DESCRIPTION OF SYMBOLS 10, 50 Electric vehicle interlock device 11 In-vehicle battery device 15 Drive circuit 20 Vehicle plug 21 Charging plug 22 Contactor for drive circuit (as first electromagnetic contactor)
23, 55 Control device 24 Vehicle key switch (as vehicle key detector)
25 Cover switch (as charging plug cover detector)
30 Charging device 52 Charging plug contactor (as second electromagnetic contactor)

Claims (4)

電動車両の車載バッテリ装置と前記電動車両を駆動させる前記電動車両の駆動回路とに接続された車両プラグと、
前記車両プラグと並列に駆動回路に接続され、前記電動車両とは別に設置された充電装置に接続可能な充電プラグと、
前記車両プラグと前記駆動回路との間に設けられ、開閉することにより前記車載バッテリ装置と前記駆動回路との間の遮断通電を行う第１電磁接触器と、
前記第１電磁接触器の開閉を制御する制御装置と、
前記制御装置と接続され、前記電動車両の車両キーのオンオフと連動してオンオフされる車両キー検知器と、
前記車両キー検知器と独立して前記制御装置に接続され、前記充電プラグを覆う充電プラグカバーの開閉と連動してオンオフされる充電プラグカバー検知器と、を備え、
前記制御装置は、前記充電プラグカバー検知器のオンオフと前記車両キー検知器のオンオフとに基づき前記第１電磁接触器の開閉を制御することを特徴とする電動車両用インターロック装置。 A vehicle plug connected to an in-vehicle battery device of the electric vehicle and a drive circuit of the electric vehicle for driving the electric vehicle;
A charging plug that is connected to the drive circuit in parallel with the vehicle plug and is connectable to a charging device installed separately from the electric vehicle;
A first electromagnetic contactor provided between the vehicle plug and the drive circuit, and configured to open and close to cut off current between the in-vehicle battery device and the drive circuit;
A control device for controlling opening and closing of the first electromagnetic contactor;
A vehicle key detector connected to the control device and turned on and off in conjunction with turning on and off the vehicle key of the electric vehicle;
A charging plug cover detector connected to the control device independently of the vehicle key detector and turned on / off in conjunction with opening and closing of a charging plug cover covering the charging plug;
The said control apparatus controls opening and closing of a said 1st electromagnetic contactor based on on / off of the said charge plug cover detector, and on / off of the said vehicle key detector, The interlock apparatus for electric vehicles characterized by the above-mentioned. 前記充電プラグと前記車両プラグとの間に設けられ、開閉することにより前記充電装置と前記車載バッテリとの間の遮断通電を行う第２電磁接触器を備え、
前記制御装置は、前記第２電磁接触器が接続され、前記充電プラグカバー検知器のオンオフと前記車両キー検知器のオンオフとに基づき前記第２電磁接触器の開閉を制御することを特徴とする請求項１記載の電動車両用インターロック装置。 A second electromagnetic contactor that is provided between the charging plug and the vehicle plug, and that opens and closes to cut off current between the charging device and the in-vehicle battery;
The control device is connected to the second electromagnetic contactor, and controls opening and closing of the second electromagnetic contactor based on on / off of the charging plug cover detector and on / off of the vehicle key detector. The interlock device for electric vehicles according to claim 1. 前記車両キー検知器がオン状態、かつ、前記充電プラグカバー検知器がオフ状態のとき、前記制御装置により前記第１電磁接触器を開状態とすることを特徴とする請求項１又は２記載の電動車両用インターロック装置。   3. The first electromagnetic contactor is opened by the control device when the vehicle key detector is in an on state and the charging plug cover detector is in an off state. Interlock device for electric vehicles. 前記車両キー検知器がオフ状態のとき、前記制御装置により前記第２電磁接触器を閉状態とすることを特徴とする請求項２記載の電動車両用インターロック装置。   3. The interlock device for an electric vehicle according to claim 2, wherein when the vehicle key detector is in an off state, the control device causes the second electromagnetic contactor to be closed.
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