JP2004242474A - Device for charging battery-operated vehicle - Google Patents

Device for charging battery-operated vehicle Download PDF

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Publication number
JP2004242474A
JP2004242474A JP2003031497A JP2003031497A JP2004242474A JP 2004242474 A JP2004242474 A JP 2004242474A JP 2003031497 A JP2003031497 A JP 2003031497A JP 2003031497 A JP2003031497 A JP 2003031497A JP 2004242474 A JP2004242474 A JP 2004242474A
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Japan
Prior art keywords
charging
plug
battery
vehicle body
operating tool
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Pending
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JP2003031497A
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Japanese (ja)
Inventor
Takashi Fukuda
隆 福田
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Nippon Yusoki Co Ltd
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Nippon Yusoki Co Ltd
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Priority to JP2003031497A priority Critical patent/JP2004242474A/en
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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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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for charging a battery-operated vehicle that can improve safety and durability by preventing the occurrence of a spark when a plug is pulled out and that can be applied more practically. <P>SOLUTION: A charge stopping switch that stops charging by a charging circuit 17 is provided on a charging plug 10. This charging plug 10 is structured with an operating means 14 spring-loaded in a direction of separating from the charging plug 10, and a detector 13 that detects a depressing operation that makes the operating means 14 approach the charging plug 10. The detector 13 opens a relay 18 to stop charging when it is detected that the operating means 14 is depressed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、例えばバッテリフォークリフト、電気自動車など動力源としてバッテリを搭載している車両用の充電装置に関する。
【０００２】
【従来の技術】
従来、バッテリ車両の車体内に搭載されたバッテリを充電する際には、例えば商用電源に充電器を接続し、この充電器をプラグによりバッテリに接続することが行われている。そして、充電終了後にプラグを外すのであるが、充電が終了する前に誤ってプラグが外れる、或いは外されるおそれがあり、仮にそうなるとプラグの端子間に火花が生じるという問題がある。
【０００３】
そこで、例えば下記文献に示すように、充電器側のプラグに充電電流用端子よりも短い１対の断線検出信号用端子が設け、バッテリ側のプラグに断線検出信号用めす端子を設け、充電電流用端子が離れる前に断線検出信号用おす端子が断線検出信号用めす端子から離れるようにし、これを以って、リレーを開いて充電を停止させる技術などが提案されている。
【０００４】
又、下記文献に示すように、プラグに充電開始／停止用のスイッチと表示手段とを設ける技術が提案されており、これによれば、例えばプラグの抜取り時に、充電中であるか否かを表示手段により確認し、必要であればスイッチを操作して充電を停止させてからプラグを抜取ることができる。
【０００５】
【文献１】
実開平６−２９４６号公報
【文献２】
特開平８−１４０２７９号公報
【０００６】
【発明が解決しようとする課題】
ところが、断線検出信号用端子を設ける技術によれば、バッテリ側（バッテリ車両側）のプラグが断線検出信号用めす端子を備えたものである場合のみ有効となるため、そうでなければ火花の発生を防止できないばかりか、充電器側のプラグと接続することもできず充電を行うことができないという課題がある。又、プラグにスイッチと表示手段とを設ける技術によれば、プラグを抜取る際に作業者は火花が発生しないよう対処することが可能となるが、プラグと充電器とをつなぐコードが引っ張られてプラグが抜取られるといった事態には対応できず、更に作業者が安全確認を怠ったりスイッチ操作を確実に行わなかったりすることも考えられ、依然として改善すべき点が残されている。
【０００７】
本発明は、プラグ抜取り時の火花の発生を防止して安全性及び耐久性を高めることができ、かつより実用的なバッテリ車両用の充電装置を提供することを目的とするものである。
【０００８】
【課題を解決するための手段】
この目的を達成するため、本発明は、車体に搭載されたバッテリに連結され該車体に支持させたバッテリプラグと、車体外の充電回路に連結され前記バッテリプラグに抜差しされる充電プラグとを介して、前記バッテリと前記充電回路とを接続し、前記充電回路からの充電電流により前記バッテリを充電するバッテリ車両用充電装置において、前記充電プラグに、該充電プラグの抜取り操作に伴なって前記充電回路による充電を停止させる充電停止スイッチが設けられることを特徴とする、という技術的手段を採用する。
【０００９】
これによれば、充電プラグ抜取り時には、充電停止スイッチにより充電を停止させた上で作業することができるので、火花の発生を未然に防止することができ、又、充電プラグに充電停止スイッチが設けられているので、非常に操作し易い。尚、充電を停止させるには、例えば充電停止スイッチを操作するのに伴なって充電回路内に配設されたリレーを作動させ、充電電流がバッテリ側へ流れることを阻止させるなどの手段を採用することができる。又、充電停止スイッチは、少なくとも充電プラグの抜取り操作に伴なって、例えば上記リレーを作動させて充電を停止させるものであればよく、例えば充電プラグの差込み操作に伴なっても充電を停止させる（すなわち、充電を禁止する）ように構成しても構わない。
【００１０】
更に、本発明に係る充電プラグの抜取り操作は、例えば充電プラグを把持する操作とすることができ、このようにすれば作業者が充電プラグを把持すると、これに伴なって充電停止スイッチにより充電が停止されるので、作業者は特に注意を払わなくとも火花の発生を防止して安全に充電プラグを抜取ることができる。
又、本発明に係る充電プラグの抜取り操作は、例えばバッテリプラグに通電可能に接続されている充電プラグの車体に対する係止を解除する操作とすることができ、このようにすれば作業者が係止を解除して充電プラグを抜取り可能な状態とすると、これに伴なって充電停止スイッチにより充電が停止されるので、作業者は特に注意を払わなくとも火花の発生を防止して安全に充電プラグを抜取ることができる。
【００１１】
本発明において、充電停止スイッチは、例えば充電プラグの表面のうち、作業者が該充電プラグの抜差し時に把持可能な部分に設けたシートスイッチや押釦スイッチにより構成することもできるが、充電プラグから離間する向きに付勢手段により付勢された操作具と、この操作具を充電プラグに接近させる押込み操作を検出する検出器とからなり、検出器は、操作具が押込み操作されたことを検出すると、充電回路による充電を停止させる構成とすることができる。ここで、充電プラグから離間する向きとしては、充電プラグの厚み方向や幅方向などを採用することができる。
【００１２】
前者によれば、充電停止スイッチをコンパクト化することができ、後者によれば、前者に比べコンパクト化は困難であるが、操作具を付勢手段の付勢力に抗して押込み操作することで充電の停止が行われるので、不用意に充電が停止することが無くなる。尚、操作具は作業者が充電プラグを把持する際に、充電プラグに接近させる向きに押込み操作されるものとすることができ、又、操作具と付勢手段とは別体に形成した後、例えば接着、ビス止め、嵌合などにより固定してもよいが、操作具自体の弾性復元力を利用することで操作具が付勢手段を兼ねるものとして形成してもよい。
【００１３】
又、後者の構成とした場合、操作具に、車体に係合されて充電プラグの抜取りを阻止する係止片を備え、該係止片が、バッテリプラグと充電プラグとを通電可能に接続させた状態で車体に係合され、少なくとも検出器により操作具の押込み操作が検出されるまで操作具が押込み操作されることにより車体との係合が解除される構成とすることができる。ここで、係止片は操作具と別体に形成した後、例えば接着、ビス止め、嵌合などにより固定してもよいが、操作具に一体に形成してもよい。
【００１４】
これによれば、充電プラグをバッテリプラグに接続すると係止片が車体に係合され、操作具を少なくとも検出器により操作具の押込み操作が検出されるまで押込み操作しなければ係止片と車体との係合が解除されないので、充電プラグの抜取りを行うことができなくなる。つまり、検出器により操作具の押込み操作が検出されることを以って充電が停止されるので、充電停止状態で係止片と車体との係合が解除されることになり、充電プラグの抜取りを行うことができるようになる。従って、充電プラグ抜取り時の火花の発生が確実に防止されるので、作業者は安全にプラグの抜取りを行うことができると共に、火花によるプラグの劣化や損耗のおそれを無くすことができる。又、充電プラグと充電回路とを連結するコードを引っ張っても係止片により充電プラグの抜取りが阻止されるので、充電プラグがバッテリプラグから引き抜かれることはなく、これにより、コードを引っ張って充電プラグを抜取るという不安全行為を確実に防止できる。
【００１５】
【発明の実施の形態】
以下、本発明をリーチ型バッテリフォークリフトに適用した実施例について、図面に基づいて具体的に説明する。図面において、図１は本実施例のリーチ型バッテリフォークリフトの斜視図であり、図２は本実施例の要部の側面図であり、図３は本実施例の充電装置を示す電気回路図である。
【００１６】
図１に示すように、リーチ型バッテリフォークリフトの車体１の前部には、バッテリルーム２が形成され、このバッテリルーム２内にバッテリ３が収納されている。車体１の外側部にはカバー４により開閉される開口部５が形成され、この開口部５の内側には箱状の内部ケース６が固定されている。内部ケース６の奥端面にバッテリプラグ７が固定され、車体外部に設けられた充電器８から引き出された充電コード９の先端に連結された充電プラグ１０がこのバッテリプラグ７に抜差しされる。
【００１７】
図２に示すように、充電プラグ１０のプラグケース１１は、バッテリプラグ７に接続した状態、即ち、充電プラグ１０の端子がバッテリプラグ７の端子に完全に接触した状態で、その一部分が車体外板１２から外側に突出するように形成されている。そして、このプラグケース１１の車体外板１２よりも車体内側に差込まれる先端部分の上面にはマイクロスイッチ１３が固定され、車体外板１２よりも外側に突き出る基端部の上面に操作具１４がピン１５を介して回転可能に支持されている。
【００１８】
操作具１４は、マイクロスイッチ１３の上側を覆う形でマイクロスイッチ１３に当接するよう配置され、マイクロスイッチ１３に内蔵された戻しバネにより上方に付勢されている。又、操作具１４の先端部１４ａは上向きに折り曲げられており、充電プラグ１０をバッテリプラグ７に接続した状態でこの先端部１４ａが開口部５の内側に折り曲げられた口縁１６に係合するようになっている。そして、先端部１４ａが口縁１６に係合することにより、操作具１４の先端部１４ａが車体外板１２よりも外側に移動することが禁止され、充電プラグ１０の抜取りが阻止される。
【００１９】
図２に示すように、操作具１４は、充電プラグ１０をバッテリプラグ７に接続した状態では、その一部分が車体外板１２の外側に突き出ているので、この部分を充電プラグ１０側に押すことができる。そして、マイクロスイッチ１３の戻しバネの付勢力に抗して押込むことによりマイクロスイッチ１３が押込み操作を検出し、これによって、充電器８の充電回路１７による充電を停止させることができる。このとき、操作具１４の先端部１４ａは口縁１６よりも下側に位置するので、そのまま充電プラグ１０を車体外側に引っ張ると、先端部１４ａが開口部５の口縁１６を潜って車体外板１２外側に出されると共に、充電プラグ１０がバッテリプラグ７から抜取られる。
【００２０】
図３に示すように、充電器８は充電回路１７と、この充電回路１７からの充電電流を制御するリレー１８と、充電開始スイッチ１９と、充電終了スイッチ２０とを備え、充電回路１７には商用電源などの外部電源２１が接続されると共に、充電コード９を介して充電プラグ１０が連結されている。リレー１８は充電開始スイッチ１９を閉じると閉じられて、充電回路１７の制御端子を接地させることにより充電回路１７からの充電電流がバッテリ３側へ流れるようにし、充電を開始させる。又、充電開始後、充電器８に設けた充電終了スイッチ２０を開いたり、操作具１４を押込み操作してマイクロスイッチ１３を開いたりすると、リレー１８が開かれ、前記制御端子がオープンとなり充電が停止される。
【００２１】
このような本実施例によれば、充電プラグ１０をバッテリプラグ７から抜取るためには、押込み操作具１４を確実に押込んで、その先端部１４ａを開口部５の口縁１６よりも開口部５内に位置させる必要があるので、押込み操作具１４を中途半端に押込んだ状態では充電プラグ１０をバッテリプラグ７から引き抜くことはできず、従って、充電が停止される前に充電プラグ１０がバッテリプラグ７から抜取られるおそれは全くない。その結果、充電プラグ１０を抜取る際に火花が発生することもなく、作業者は安全に作業を行うことができる。
【００２２】
尚、前記実施例では、バッテリプラグ７及びこれに対応する充電プラグ１０の先端面は互いに他方に対応する段付面に形成されているが、このことは本発明に必須の事項ではなく、例えばバッテリプラグ７の先端部と充電プラグ１０の先端部との一方がその他方に内嵌されるように形成してもよい。又、前記実施例ではバッテリプラグ７が車体１の左側面内に配置されているが、このバッテリプラグ７は、その他の部位、例えば車体１の前面、右側面、インストルメントパネルなどに配置してもよい。更に、本発明はリーチ型バッテリフォークリフトに限定されず、カウンタバランス型バッテリフォークリフトなど他のバッテリフォークリフトはもとより、荷役以外の作業に用いるバッテリ式作業車や電気自動車などにも適用することができる。
【００２３】
【発明の効果】
以上に説明したように、本発明によれば、充電停止スイッチにより充電を停止させた上で充電プラグの抜取りを行うことができるので、火花の発生を未然に防止することができる。従って、火花によるプラグの劣化や損耗が生じるおそれがなくなり、又、作業者は安全に作業を行うことができる。
【図面の簡単な説明】
【図１】本発明を適用したリーチ型フォークリフトの斜視図である。
【図２】本発明の要部を示す側面図である。
【図３】本発明の電気回路図である。
【符号の説明】
１ 車体
３ バッテリ
７ バッテリプラグ
８ 充電器
１０ 充電プラグ
１３ マイクロスイッチ
１４ 操作具
１７ 充電回路
１８ リレー
２１ 外部電源[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a charging device for a vehicle equipped with a battery as a power source, such as a battery forklift and an electric vehicle.
[0002]
[Prior art]
Conventionally, when charging a battery mounted in a vehicle body of a battery vehicle, for example, a charger is connected to a commercial power supply, and the charger is connected to the battery by a plug. Then, the plug is removed after the charging is completed. However, there is a possibility that the plug may be disconnected or may be removed by mistake before the charging is completed. If this happens, there is a problem that a spark is generated between the terminals of the plug.
[0003]
Therefore, for example, as shown in the following document, a pair of disconnection detection signal terminals shorter than the charging current terminal is provided on the charger side plug, and a disconnection detection signal female terminal is provided on the battery side plug. A technique has been proposed in which the male terminal for a disconnection detection signal is separated from the female terminal for a disconnection detection signal before the terminal for separation is separated, and thereby, the relay is opened to stop charging.
[0004]
Further, as shown in the following document, a technique has been proposed in which a plug is provided with a switch for starting / stopping charging and a display means. According to this technique, for example, when the plug is removed, it is determined whether or not charging is in progress. After confirming by the display means, if necessary, the switch can be operated to stop charging, and then the plug can be removed.
[0005]
[Reference 1]
Published Japanese Utility Model Application No. 6-2946 [Reference 2]
JP-A-8-140279
[Problems to be solved by the invention]
However, according to the technique of providing the disconnection detection signal terminal, the spark plug is effective only when the plug on the battery side (battery vehicle side) has a female terminal for the disconnection detection signal. Not only cannot be prevented, but also cannot be connected to the plug on the charger side and cannot be charged. In addition, according to the technique of providing a switch and a display means on the plug, it is possible for an operator to take measures to prevent the occurrence of sparks when removing the plug, but the cord connecting the plug and the charger is pulled. It is not possible to cope with the situation where the plug is pulled out, and furthermore, it is conceivable that the worker may neglected the safety check or did not perform the switch operation reliably, and there is still a point to be improved.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a more practical charging device for a battery vehicle, which can prevent the occurrence of sparks at the time of plug removal and can enhance safety and durability.
[0008]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides a battery plug connected to a battery mounted on a vehicle body and supported by the vehicle body, and a charging plug connected to a charging circuit outside the vehicle body and inserted and removed from the battery plug. Connecting the battery and the charging circuit, and charging the battery with a charging current from the charging circuit. The charging device for a battery vehicle, comprising: Technical means is employed in which a charge stop switch for stopping charging by the circuit is provided.
[0009]
According to this, when removing the charging plug, it is possible to work after stopping charging by the charging stop switch, so that it is possible to prevent the occurrence of sparks, and to provide a charging stop switch on the charging plug. It is very easy to operate. In order to stop charging, for example, by operating a charging stop switch, a relay disposed in the charging circuit is operated to prevent charging current from flowing to the battery side. can do. The charge stop switch may be any switch that stops charging by, for example, activating the above-mentioned relay, at least in connection with the operation of removing the charging plug. For example, the charging stop switch stops charging even in accordance with the operation of inserting the charging plug. (That is, charging may be prohibited).
[0010]
Further, the operation of removing the charging plug according to the present invention can be, for example, an operation of gripping the charging plug. In this way, when the worker grips the charging plug, the charging is stopped by the charging stop switch. Is stopped, so that the operator can safely remove the charging plug without paying any attention, by preventing the occurrence of sparks.
Further, the operation of removing the charging plug according to the present invention can be, for example, an operation of releasing the locking of the charging plug, which is electrically connected to the battery plug, to the vehicle body. When the charging is stopped and the charging plug can be removed, charging is stopped by the charging stop switch, preventing the spark from being generated without any special attention from the operator and ensuring safe charging. The plug can be removed.
[0011]
In the present invention, the charge stop switch may be constituted by, for example, a sheet switch or a push button switch provided on a portion of the surface of the charging plug that can be gripped by an operator when inserting or removing the charging plug. The operating tool urged by the urging means in a direction to perform the operation, and a detector for detecting a pushing operation for bringing the operating tool closer to the charging plug. Alternatively, the charging by the charging circuit may be stopped. Here, as the direction away from the charging plug, a thickness direction, a width direction, or the like of the charging plug can be adopted.
[0012]
According to the former, the charge stop switch can be made more compact, and according to the latter, it is difficult to make it more compact than the former, but by pushing the operating tool against the urging force of the urging means, Since the charging is stopped, the charging is not inadvertently stopped. The operating tool can be pushed in the direction of approaching the charging plug when an operator grips the charging plug, and after the operating tool and the urging means are formed separately, For example, the operating tool may be fixed by bonding, screwing, fitting, or the like, but the operating tool may be formed to also serve as the urging means by utilizing the elastic restoring force of the operating tool itself.
[0013]
Further, in the case of the latter configuration, the operating tool is provided with a locking piece that is engaged with the vehicle body and prevents removal of the charging plug, and the locking piece allows the battery plug and the charging plug to be electrically connected. The engagement with the vehicle body can be released by pushing the operating tool at least until the detector detects the pushing operation of the operating tool by the detector. Here, after the locking piece is formed separately from the operating tool, it may be fixed by, for example, bonding, screwing, fitting, or the like, but may be formed integrally with the operating tool.
[0014]
According to this, when the charging plug is connected to the battery plug, the locking piece is engaged with the vehicle body, and if the operating tool is not pushed down at least until the pushing operation of the operating tool is detected by the detector, the locking piece and the vehicle body are not engaged. , The charging plug cannot be removed. In other words, the charging is stopped by the detection of the pushing operation of the operating tool by the detector, so that the engagement between the locking piece and the vehicle body is released in the charging stopped state, and the charging plug is disconnected. It becomes possible to perform sampling. Accordingly, the occurrence of sparks when the charging plug is removed is reliably prevented, so that the operator can safely remove the plug and eliminate the risk of deterioration and wear of the plug due to the spark. Also, even if the cord connecting the charging plug and the charging circuit is pulled, the removal of the charging plug is prevented by the locking piece, so that the charging plug is not pulled out of the battery plug. The unsafe act of removing the plug can be reliably prevented.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a reach type battery forklift will be specifically described with reference to the drawings. In the drawings, FIG. 1 is a perspective view of a reach type battery forklift of the present embodiment, FIG. 2 is a side view of a main part of the present embodiment, and FIG. 3 is an electric circuit diagram showing a charging device of the present embodiment. is there.
[0016]
As shown in FIG. 1, a battery room 2 is formed in a front portion of a body 1 of the reach-type battery forklift, and a battery 3 is stored in the battery room 2. An opening 5 that is opened and closed by a cover 4 is formed on an outer portion of the vehicle body 1, and a box-shaped inner case 6 is fixed inside the opening 5. A battery plug 7 is fixed to a rear end surface of the inner case 6, and a charging plug 10 connected to a tip of a charging cord 9 drawn out of a charger 8 provided outside the vehicle body is inserted and removed from the battery plug 7.
[0017]
As shown in FIG. 2, the plug case 11 of the charging plug 10 is connected to the battery plug 7, that is, in a state where the terminal of the charging plug 10 is completely in contact with the terminal of the battery plug 7, and a part thereof is outside the vehicle body. It is formed so as to protrude outward from the plate 12. A micro switch 13 is fixed on the upper surface of a tip portion of the plug case 11 which is inserted into the vehicle body from the vehicle body outer plate 12, and an operating tool 14 is provided on the upper surface of a base end protruding outside the vehicle body outer plate 12. Are rotatably supported via pins 15.
[0018]
The operating tool 14 is disposed so as to cover the upper side of the microswitch 13 so as to contact the microswitch 13, and is urged upward by a return spring built in the microswitch 13. The distal end portion 14a of the operating tool 14 is bent upward. When the charging plug 10 is connected to the battery plug 7, the distal end portion 14a engages with the lip 16 bent inside the opening 5. It has become. The engagement of the distal end portion 14a with the lip 16 prohibits the distal end portion 14a of the operating tool 14 from moving outside the vehicle body outer panel 12, and prevents the charging plug 10 from being pulled out.
[0019]
As shown in FIG. 2, when the operating tool 14 has the charging plug 10 connected to the battery plug 7, a part of the operating tool 14 protrudes to the outside of the vehicle body outer panel 12. Can be. Then, when the micro switch 13 is pressed against the urging force of the return spring of the micro switch 13, the micro switch 13 detects the pressing operation, whereby the charging by the charging circuit 17 of the charger 8 can be stopped. At this time, since the distal end portion 14a of the operating tool 14 is located below the lip 16, if the charging plug 10 is pulled to the outside of the vehicle body as it is, the distal end portion 14a goes under the lip 16 of the opening 5 and is outside the vehicle body. The charging plug 10 is pulled out of the battery plug 7 while being taken out of the plate 12.
[0020]
As shown in FIG. 3, the charger 8 includes a charging circuit 17, a relay 18 for controlling a charging current from the charging circuit 17, a charging start switch 19, and a charging end switch 20. An external power supply 21 such as a commercial power supply is connected, and a charging plug 10 is connected via a charging cord 9. The relay 18 is closed when the charging start switch 19 is closed, and the control terminal of the charging circuit 17 is grounded so that the charging current from the charging circuit 17 flows to the battery 3 to start charging. When the charging end switch 20 provided on the charger 8 is opened after the charging is started, or the micro switch 13 is opened by pushing the operating tool 14, the relay 18 is opened, the control terminal is opened, and charging is started. Stopped.
[0021]
According to the present embodiment, in order to remove the charging plug 10 from the battery plug 7, the pushing operation tool 14 is securely pushed in so that the tip portion 14 a of the opening 5 is more open than the lip 16 of the opening 5. 5, the charging plug 10 cannot be pulled out from the battery plug 7 in a state in which the pushing operation tool 14 is pushed halfway, and therefore, the charging plug 10 must be pulled before the charging is stopped. There is no risk of being pulled out of the battery plug 7. As a result, no spark is generated when the charging plug 10 is removed, and the worker can work safely.
[0022]
In the above-described embodiment, the front end surfaces of the battery plug 7 and the corresponding charging plug 10 are formed in stepped surfaces corresponding to each other, but this is not essential to the present invention. One of the tip of the battery plug 7 and the tip of the charging plug 10 may be formed so as to fit inside the other. Further, in the above embodiment, the battery plug 7 is disposed in the left side surface of the vehicle body 1, but the battery plug 7 is disposed in other parts, for example, the front surface, the right side surface, the instrument panel, and the like of the vehicle body 1. Is also good. Further, the present invention is not limited to the reach type battery forklift, but can be applied to not only other battery forklifts such as a counterbalance type battery forklift, but also a battery type work vehicle or an electric vehicle used for work other than cargo handling.
[0023]
【The invention's effect】
As described above, according to the present invention, the charging plug can be removed after the charging is stopped by the charging stop switch, so that the occurrence of sparks can be prevented. Therefore, there is no possibility that the spark causes deterioration or wear of the plug, and the worker can work safely.
[Brief description of the drawings]
FIG. 1 is a perspective view of a reach type forklift to which the present invention is applied.
FIG. 2 is a side view showing a main part of the present invention.
FIG. 3 is an electric circuit diagram of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 vehicle body 3 battery 7 battery plug 8 charger 10 charging plug 13 micro switch 14 operating tool 17 charging circuit 18 relay 21 external power supply

Claims (3)

車体に搭載されたバッテリに連結され該車体に支持させたバッテリプラグと、車体外の充電回路に連結され前記バッテリプラグに抜差しされる充電プラグとを介して、前記バッテリと前記充電回路とを接続し、前記充電回路からの充電電流により前記バッテリを充電するバッテリ車両用充電装置において、
前記充電プラグに、該充電プラグの抜取り操作に伴なって前記充電回路による充電を停止させる充電停止スイッチが設けられることを特徴とするバッテリ車両用充電装置。The battery and the charging circuit are connected via a battery plug connected to a battery mounted on the vehicle body and supported by the vehicle body, and a charging plug connected to a charging circuit outside the vehicle body and inserted and removed from the battery plug. And a battery vehicle charging device that charges the battery with a charging current from the charging circuit,
A charging device for a battery vehicle, wherein the charging plug is provided with a charging stop switch for stopping charging by the charging circuit in accordance with an operation of removing the charging plug. 前記充電停止スイッチは、前記充電プラグから離間する向きに付勢手段により付勢された操作具と、この操作具を前記充電プラグに接近させる押込み操作を検出する検出器とからなり、
前記検出器は、前記操作具が押込み操作されたことを検出すると、前記充電回路による充電を停止させることを特徴とする請求項１に記載のバッテリ車両用充電装置。The charging stop switch includes an operating tool that is biased by a biasing unit in a direction away from the charging plug, and a detector that detects a pressing operation of bringing the operating tool close to the charging plug,
The charging device for a battery vehicle according to claim 1, wherein the detector stops charging by the charging circuit when detecting that the operating tool is pressed. 前記操作具は、前記車体に係合されて前記充電プラグの抜取りを阻止する係止片を備え、
該係止片は、前記バッテリプラグと前記充電プラグとを通電可能に接続させた状態で前記車体に係合され、少なくとも前記検出器により前記操作具の押込み操作が検出されるまで前記操作具が押込み操作されることにより前記車体との係合が解除されることを特徴とする請求項２に記載のバッテリ車両用充電装置。The operating tool includes a locking piece that is engaged with the vehicle body and prevents removal of the charging plug,
The locking piece is engaged with the vehicle body in a state where the battery plug and the charging plug are connected to be able to conduct electricity, and the operating tool is operated until at least the detector detects a pushing operation of the operating tool. The charging device for a battery vehicle according to claim 2, wherein engagement with the vehicle body is released by a pushing operation.
JP2003031497A 2003-02-07 2003-02-07 Device for charging battery-operated vehicle Pending JP2004242474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010288386A (en) * 2009-06-12 2010-12-24 Fuji Heavy Ind Ltd Charging device and charging structure
JP2011239620A (en) * 2010-05-12 2011-11-24 Tokai Rika Co Ltd Feeding plug lock structure for receiving connector for battery charging
JP2022060664A (en) * 2020-10-05 2022-04-15 株式会社クボタ Electric tractor
CN115037027A (en) * 2021-03-05 2022-09-09 本田技研工业株式会社 Power supply connecting device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010288386A (en) * 2009-06-12 2010-12-24 Fuji Heavy Ind Ltd Charging device and charging structure
JP2011239620A (en) * 2010-05-12 2011-11-24 Tokai Rika Co Ltd Feeding plug lock structure for receiving connector for battery charging
JP2022060664A (en) * 2020-10-05 2022-04-15 株式会社クボタ Electric tractor
JP7458956B2 (en) 2020-10-05 2024-04-01 株式会社クボタ Electric Tractor
CN115037027A (en) * 2021-03-05 2022-09-09 本田技研工业株式会社 Power supply connecting device

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