JP2005100746A - Battery charging device in electric vehicle - Google Patents

Battery charging device in electric vehicle Download PDF

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Publication number
JP2005100746A
JP2005100746A JP2003331514A JP2003331514A JP2005100746A JP 2005100746 A JP2005100746 A JP 2005100746A JP 2003331514 A JP2003331514 A JP 2003331514A JP 2003331514 A JP2003331514 A JP 2003331514A JP 2005100746 A JP2005100746 A JP 2005100746A
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battery
hood
opening
charging
electric vehicle
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Shigeru Kiyomiya
茂 清宮
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Komatsu Forklift KK
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Komatsu Forklift KK
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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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery charging device in an electric vehicle in which damages due to hydrogen gas generated by a battery at battery charging is eliminated and charging work can be carried out safely. <P>SOLUTION: This battery charging device in the electric vehicle such as a battery fork lift truck is equipped with a battery housing body 6 that houses a battery 10 inside and covers the surrounding of the battery 10 in a vehicle body 1 and has a bonnet (hood) 9, and carries out the charging of the battery 10 by being connected to an external power source and supplies electric power from the external power source to the battery 10 housed inside the battery housing body 6. A switch for a hood 30 for detecting the opening of the bonnet hood 9 of the battery housing body 6 is provided, and when the opening of the bonnet hood 9 is detected by this switch for the hood 30, the charging to the battery 10 can be started. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、電動車両、例えばバッテリーフォークリフトトラックにおけるバッテリ充電装置に関するものである。   The present invention relates to a battery charging device in an electric vehicle, for example, a battery forklift truck.

従来、電動車両の一種であるバッテリーフォークリフトトラックにあっては、図４に示すように、車体１の下部に前輪２と後輪３とを備えると共に、車体１の前方にリフト作業機４を装着し、車体１の後部にカウンターウエイト５を装着していた。そして、車体１の中央やや後部にバッテリ収納体６を備え、このバッテリ収納体６は前後のパネル７と左右のパネル８、そして、上方に開放自在となる開閉扉であるボンネットフード９とから構成されており、内部に多数のバッテリ１０を収納して、これらのバッテリ１０の周囲を覆うようにしていた。このバッテリ収納体６の内部に収納した多数のバッテリ１０は走行からリフト作業機４の作動まであらゆるものの動力源である。そして、このバッテリ収納体６における開閉扉であるボンネットフード９の上部にオペレータシート１１を装着すると共に、このオペレータシート１１の前方にはステアリングハンドル１２や作業機レバーを備えていた。   Conventionally, in a battery forklift truck which is a kind of electric vehicle, as shown in FIG. 4, a front wheel 2 and a rear wheel 3 are provided at the lower part of the vehicle body 1, and a lift working machine 4 is mounted in front of the vehicle body 1. The counterweight 5 is mounted on the rear part of the vehicle body 1. A battery housing 6 is provided at the center and slightly rear of the vehicle body 1. The battery housing 6 includes front and rear panels 7, left and right panels 8, and a hood hood 9 that is an openable door that can be opened upward. In this case, a large number of batteries 10 are accommodated in the inside so as to cover the periphery of these batteries 10. A large number of batteries 10 housed in the battery housing 6 are power sources for everything from running to operation of the lift working machine 4. An operator seat 11 is mounted on an upper portion of a hood 9 that is an open / close door of the battery housing 6, and a steering handle 12 and a work implement lever are provided in front of the operator seat 11.

このような構成となるバッテリーフォークリフトトラックにおいて、車体１内にはバッテリ収納体６の内部に収納する動力源であるバッテリ１０に充電を行う充電装置を備えていた。   In the battery forklift truck having such a configuration, the vehicle body 1 includes a charging device that charges the battery 10 that is a power source stored in the battery storage body 6.

次に、この充電装置について説明すると、図５に示すように、まず、工場内等に外部電源を２０設置し、この外部電源２０はＡＣ電源２１と漏電ブレーカ２２とから構成していた。そして、当該充電装置は、外部電源２０のコンセント２３に接続する接続プラグ２４を備え、この接続プラグ２４をコンセント２３に差し込むことで、外部電源２０より電力の供給を受けつつ、この電力をバッテリ収納体６の内部に収納したバッテリ１０に供給し、バッテリ１０への充電を行うようになっていた。このバッテリ１０への充電は日ごろ頻繁に行う作業であった。   Next, the charging apparatus will be described. As shown in FIG. 5, first, an external power source 20 is installed in a factory or the like, and the external power source 20 is composed of an AC power source 21 and a leakage breaker 22. The charging device includes a connection plug 24 that connects to the outlet 23 of the external power source 20. By inserting the connection plug 24 into the outlet 23, power is supplied from the external power source 20, and this power is stored in the battery. The battery 10 is supplied to the battery 10 housed in the body 6 and the battery 10 is charged. Charging the battery 10 was an operation performed frequently on a daily basis.

この充電装置にあっては、充電制御部２５によって制御されたリレー２６と、このリレー２６の下流側のトランス２７と、このトランス２７の下流側の交流電力を直流電力に整流する整流器２８とから構成し、このようになる充電装置における整流器２８の下流側に接続端子２９を介してバッテリ１０が接続するようになっていた。   In this charging apparatus, a relay 26 controlled by the charging control unit 25, a transformer 27 on the downstream side of the relay 26, and a rectifier 28 for rectifying AC power downstream of the transformer 27 into DC power. The battery 10 is configured to be connected via the connection terminal 29 to the downstream side of the rectifier 28 in the charging apparatus configured as described above.

バッテリーフォークリフトトラック等の電動車両において、充電装置を用いて搭載したバッテリに充電を行う場合、バッテリ内部における化学反応によって水素ガスが発生する。この発生した水素ガスが多量になり、水素ガスの濃度が高くなると、少しの火気でも爆発するといった非常に危険な状態になるおそれがあった。このため、従来は、バッテリへの充電時、バッテリを内部に収納するバッテリ収納体における開閉扉であるボンネットフードを上方に開放し、発生する水素ガスを外部に発散するようにしていた。   In an electric vehicle such as a battery forklift truck, when charging a battery mounted using a charging device, hydrogen gas is generated by a chemical reaction inside the battery. If the amount of the generated hydrogen gas becomes large and the concentration of the hydrogen gas becomes high, there is a risk that a very dangerous state will occur in which even a little fire will explode. For this reason, conventionally, when the battery is charged, the hood hood, which is an opening / closing door in the battery housing that houses the battery, is opened upward, and the generated hydrogen gas is diffused to the outside.

しかしながら、従来、バッテリ収納体における開閉扉であるボンネットフードの上部にはオペレータシートを装着していたため、ボンネットフードがかなりの重量物となり、このため、作業者はボンネットフードの開放が煩わしくなり、バッテリ充電時、ボンネットフードを開放することなく、バッテリへの充電作業を行うことが多々あった。このようにボンネットフードを開放することなく、バッテリに充電作業を行うと、前述で述べたように水素ガスの濃度が高くなり、少しの火気でも爆発するといった非常に危険な状態に陥るおそれがあった。   However, conventionally, since an operator seat is mounted on the upper part of the hood, which is an opening / closing door in the battery housing, the hood is very heavy, which makes it difficult for the operator to open the hood. During charging, the battery was often charged without opening the hood. If the battery is charged without opening the hood as described above, the concentration of hydrogen gas increases as described above, and there is a risk of a very dangerous situation in which even a little fire may explode. It was.

本発明は、前述したバッテリへの充電作業時の危険性といった問題をなくし、充電作業を安全に行うことのできる電動車両におけるバッテリ充電装置を提供することを、その課題としている。   An object of the present invention is to provide a battery charging device in an electric vehicle that eliminates the above-described problem of danger during the charging operation of the battery and can perform the charging operation safely.

第一の発明は、内部にバッテリを収納しこのバッテリの周囲を覆うと共に開閉扉を有するバッテリ収納体を車体に備えた電動車両であって、外部電源に接続してバッテリ収納体の内部に収納したバッテリに外部電源からの電力を供給することで、バッテリに充電を行う電動車両におけるバッテリ充電装置において、バッテリ収納体の開閉扉の開放を検知する開閉扉開放検知手段を設け、この開閉扉開放検知手段によって開閉扉の開放を検知すると、バッテリへの充電を開始可能にした電動車両におけるバッテリ充電装置である。   A first aspect of the present invention is an electric vehicle that has a battery housing body that has a battery housing body that covers and surrounds the battery and that has an open / close door, and is connected to an external power source and housed inside the battery housing body. In a battery charger for an electric vehicle that charges the battery by supplying electric power from an external power source, an open / close door detection means for detecting the opening / closing door of the battery housing is provided. When the opening of the door is detected by the detection means, the battery charging device for the electric vehicle is configured to start charging the battery.

第二の発明は、第一の発明において、前記バッテリ収納体の開閉扉として、上部にオペレータシートを装着したボンネットフードである電動車両におけるバッテリ充電装置である。   A second invention is a battery charging device in an electric vehicle according to the first invention, which is a hood hood having an operator seat mounted on the upper portion thereof as an opening / closing door of the battery housing.

バッテリ充電時、開閉扉開放検知手段によってバッテリ収納体における開閉扉の開放を検知しない限り、すなわち開閉扉を開放しない限り、バッテリへの充電を開始可能にしないようにしたことで、作業者は開閉扉の開放が煩わしくても、開閉扉を開放しなければならず、開閉扉を確実に開放して、バッテリ充電時に発生する水素ガスを外部に発散させることができ、充電作業時における水素ガスによる爆発を防止して、バッテリへの充電作業を極めて安全に行うことができる。   When charging the battery, the opening / closing door detection means does not detect the opening / closing of the door in the battery housing, that is, the opening / closing door is not opened. Even if the opening of the door is troublesome, the opening and closing door must be opened, the opening and closing door can be opened reliably, and hydrogen gas generated when charging the battery can be diffused to the outside. The explosion can be prevented and the battery can be charged extremely safely.

本発明による電動車両におけるバッテリ充電装置を実施するための一形態について説明する。電動車両としてはバッテリーフォークリフトトラックである。なお、電動車両は、このバッテリーフォークリフトトラックに限定されるものではなく、バッテリ自動車等の他の電動車両でも良い。   An embodiment for implementing a battery charging device in an electric vehicle according to the present invention will be described. The electric vehicle is a battery forklift truck. The electric vehicle is not limited to this battery forklift truck, and may be another electric vehicle such as a battery car.

図1に示すように、まず、工場内等に外部電源２０を設置し、この外部電源２０はＡＣ電源２１と漏電ブレーカ２２とから構成している。そして、当該充電装置は、外部電源２０のコンセント２３に接続する接続プラグ２４を備え、この接続プラグ２４をコンセント２３に差し込むことで、外部電源２０より電力の供給を受けつつ、この電力をバッテリ収納体６の内部に収納したバッテリ１０に供給し、バッテリ１０への充電を行うようになっている。   As shown in FIG. 1, first, an external power source 20 is installed in a factory or the like, and the external power source 20 includes an AC power source 21 and a leakage breaker 22. The charging device includes a connection plug 24 that connects to the outlet 23 of the external power source 20. By inserting the connection plug 24 into the outlet 23, power is supplied from the external power source 20, and this power is stored in the battery. The battery 10 is supplied to the battery 10 housed in the body 6 and the battery 10 is charged.

そして、この充電装置にあっては、充電制御部２５によって制御されたリレー２６と、このリレー２６の下流側のトランス２７と、このトランス２７の下流側の交流電力を直流電力に整流する整流器２８とから構成し、このようになる充電装置における整流器２８の下流側に接続端子２９を介してバッテリ１０が接続する。   In this charging apparatus, the relay 26 controlled by the charging control unit 25, the transformer 27 on the downstream side of the relay 26, and the rectifier 28 that rectifies the AC power downstream of the transformer 27 into DC power. The battery 10 is connected via the connection terminal 29 to the downstream side of the rectifier 28 in the charging device as described above.

さらに、この充電装置にあっては、バッテリ収納体６の開閉扉であるボンネットフード９の開放を検知する開閉扉開放検知手段、例えばフード用スイッチ３０を設け、このフード用スイッチ３０によってボンネットフード９の開放を検知すると、前記充電制御部２５に信号が伝わり、充電制御部２５によりリレー２６を作動して、バッテリ１０への充電を開始可能にするようにしている。   Further, in this charging apparatus, an opening / closing door opening detecting means for detecting opening of the hood hood 9 that is an opening / closing door of the battery housing 6, for example, a hood switch 30 is provided. When the opening of the battery is detected, a signal is transmitted to the charging control unit 25, and the relay 26 is operated by the charging control unit 25 so that charging of the battery 10 can be started.

この開閉扉開放検知手段であるフード用スイッチ３０にあっては、図２に示すように、車体１の後部に装着したカウンターウエイト５の上部に前方に向けて設けたオンオフ式のボタンスイッチであり、図３に示すように、ボンネットフード９を上方に開放したとき、ボンネットフード９がボタンスイッチに当たって、当該スイッチがオンとなり、ボンネットフード９の開放を検知するようになっている。   As shown in FIG. 2, the hood switch 30 serving as the opening / closing door opening detecting means is an on / off type button switch provided forwardly on the upper portion of the counterweight 5 attached to the rear portion of the vehicle body 1. As shown in FIG. 3, when the hood hood 9 is opened upward, the hood hood 9 hits the button switch, the switch is turned on, and the opening of the hood hood 9 is detected.

このようになるフード用スイッチ３０は、非常にコンパクトで、配置をある程度自由にすることができ、しかも、配線の取り回しも容易なことから、設計が非常に容易である。また、このフード用スイッチ３０をボンネットフード９内に設けることにより、スイッチの信頼性を維持することができると共に、余計なものが外に露出しないようにすることができ、外観的かつデザイン的にも優れたものにすることができる。   The hood switch 30 having such a configuration is very compact, can be freely arranged to some extent, and can be easily routed, so that the design is very easy. In addition, by providing the hood switch 30 in the hood hood 9, it is possible to maintain the reliability of the switch, and to prevent the excess from being exposed to the outside. Can also be excellent.

なお、この開閉扉開放検知手段であるフード用スイッチ３０としては、前記のものに限定されるものではなく、例えば、ボンネットフード９の回転軸に回転式スイッチを設けるようにしても良い。   The hood switch 30 serving as the opening / closing door opening detection means is not limited to the above-described one. For example, a rotary switch may be provided on the rotation shaft of the hood hood 9.

また、前述の実施するための一形態において、開閉扉としてはボンネットフード９で説明したが、これに限定されるものではなく、例えば、ボンネットフード９の左右両側に開閉自在に設けるサイドカバーでも良く、この場合は、サイドカバーの開放を開閉扉開放検知手段によって検知するようにする。さらに、バッテリ収納体６における前後のパネル７あるいは左右のパネル８を開閉自在として、これを開閉扉としても良く、この場合は、前後のパネル７あるいは左右のパネル８の開放を開閉扉開放検知手段によって検知するようにする。   In the embodiment for carrying out the embodiment described above, the hood hood 9 has been described as the opening / closing door. However, the present invention is not limited to this. For example, a side cover that can be freely opened and closed on both the left and right sides of the hood 9 In this case, the opening of the side cover is detected by the opening / closing door opening detecting means. Further, the front and rear panels 7 or the left and right panels 8 in the battery housing 6 may be freely opened and closed, and this may be used as an open / close door. To detect.

以上のようになることで、バッテリ充電装置にあっては、バッテリ充電時、フード用スイッチ３０においてボンネットフード９の開放を検知しない限り、すなわちボンネットフード９を開放しない限り、工場内等に設置した外部電源２０に接続しても、バッテリ１０への充電を行わないようにしている。   As described above, in the battery charging device, when the battery is charged, the battery hood switch 30 is installed in the factory or the like unless the hood switch 30 detects the opening of the hood hood 9, that is, unless the hood hood 9 is opened. Even when connected to the external power source 20, the battery 10 is not charged.

バッテリ１０充電時、このようにボンネットフード９を開放しない限り、バッテリ１０への充電を行わないようにしたことで、作業者はボンネットフード９の開放が煩わしくても、ボンネットフード９を開放しなければならず、ボンネットフード９を確実に開放して、バッテリ１０充電時に発生する水素ガスを外部に発散させることができ、充電作業時における水素ガスによる爆発を防止して、日ごろ頻繁に行うバッテリ１０への充電作業を極めて安全に行うことができる。   When the battery 10 is charged, the battery 10 is not charged unless the hood 9 is opened as described above, so that the operator must open the hood 9 even if the hood 9 is troublesome. In other words, the hood 9 is surely opened, and hydrogen gas generated when the battery 10 is charged can be diffused to the outside, and explosions caused by hydrogen gas at the time of charging work are prevented. It is possible to perform the charging operation of the battery very safely.

本発明の電動車両におけるバッテリ充電装置の構成図である。It is a block diagram of the battery charging device in the electric vehicle of this invention. 本発明における開閉扉開放検知手段の説明図である。It is explanatory drawing of the opening-and-closing door detection means in this invention. 本発明における開閉扉開放検知手段の説明図である。It is explanatory drawing of the opening-and-closing door detection means in this invention. バッテリーフォークリフトトラック全体の側面図である。It is a side view of the whole battery forklift truck. 従来の電動車両におけるバッテリ充電装置の構成図である。It is a block diagram of the battery charging device in the conventional electric vehicle.

符号の説明Explanation of symbols

１…車体、２…前輪、３…後輪、４…リフト作業機、５…カウンターウエイト、６…バッテリ収納体、７…パネル、８…パネル、９…ボンネットフード、１０…バッテリ、１１…オペレータシート、１２…ステアリングハンドル、２０…外部電源、２１…ＡＣ電源、２２…漏電ブレーカ、２３…コンセント、２４…接続プラグ、２５…充電制御部、２６…リレー、２７…トランス、２８…整流器、２９…接続端子、３０…フード用スイッチ。  DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 2 ... Front wheel, 3 ... Rear wheel, 4 ... Lift work machine, 5 ... Counterweight, 6 ... Battery housing, 7 ... Panel, 8 ... Panel, 9 ... Bonnet hood, 10 ... Battery, 11 ... Operator Seat, 12 ... Steering handle, 20 ... External power supply, 21 ... AC power supply, 22 ... Earth leakage breaker, 23 ... Outlet, 24 ... Connection plug, 25 ... Charge control unit, 26 ... Relay, 27 ... Transformer, 28 ... Rectifier, 29 ... connection terminal, 30 ... hood switch.

Claims (2)

内部にバッテリ１０を収納しこのバッテリ１０の周囲を覆うと共に開閉扉を有するバッテリ収納体６を車体１に備えた電動車両であって、外部電源２０に接続してバッテリ収納体６の内部に収納したバッテリ１０に外部電源２０からの電力を供給することで、バッテリ１０に充電を行う電動車両におけるバッテリ充電装置において、
バッテリ収納体６の開閉扉の開放を検知する開閉扉開放検知手段を設け、この開閉扉開放検知手段によって開閉扉の開放を検知すると、バッテリ１０への充電を開始可能にしたことを特徴とする電動車両におけるバッテリ充電装置。 The battery 10 is housed in the vehicle body 1 and includes a battery housing 6 that covers and surrounds the battery 10 and has an open / close door. The vehicle 1 is connected to an external power source 20 and is housed in the battery housing 6. In the battery charging device in the electric vehicle that charges the battery 10 by supplying power from the external power supply 20 to the battery 10,
Opening / closing door opening detecting means for detecting opening / closing of the opening / closing door of the battery housing 6 is provided, and when opening of the opening / closing door is detected by the opening / closing door opening detecting means, charging of the battery 10 can be started. A battery charger for an electric vehicle. 前記バッテリ収納体６の開閉扉として、上部にオペレータシート１１を装着したボンネットフード９であることを特徴とする請求項1記載の電動車両におけるバッテリ充電装置。

2. The battery charging device for an electric vehicle according to claim 1, wherein the battery housing body is a hood hood 9 having an operator seat 11 mounted thereon as an opening / closing door of the battery housing body 6.

JP2003331514A 2003-09-24 2003-09-24 Battery charging device in electric vehicle Pending JP2005100746A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008306817A (en) * 2007-06-06 2008-12-18 Komatsu Utility Co Ltd Working vehicle
WO2013051392A1 (en) * 2011-10-07 2013-04-11 日産自動車株式会社 Charging device
JP2015154542A (en) * 2014-02-13 2015-08-24 住友重機械工業株式会社 Forklift charger
JP2016031918A (en) * 2014-07-30 2016-03-07 パナソニックＩｐマネジメント株式会社 Power storage system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008306817A (en) * 2007-06-06 2008-12-18 Komatsu Utility Co Ltd Working vehicle
WO2013051392A1 (en) * 2011-10-07 2013-04-11 日産自動車株式会社 Charging device
CN103843223A (en) * 2011-10-07 2014-06-04 日产自动车株式会社 Charging device
RU2582079C2 (en) * 2011-10-07 2016-04-20 Ниссан Мотор Ко., Лтд. Accumulator battery charger
CN103843223B (en) * 2011-10-07 2016-10-05 日产自动车株式会社 Charging device
US9620971B2 (en) 2011-10-07 2017-04-11 Nissan Motor Co., Ltd. Battery charger
JP2015154542A (en) * 2014-02-13 2015-08-24 住友重機械工業株式会社 Forklift charger
JP2016031918A (en) * 2014-07-30 2016-03-07 パナソニックＩｐマネジメント株式会社 Power storage system

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