JP2011250531A - External power supply voltage notification device for motor-driven vehicle - Google Patents

External power supply voltage notification device for motor-driven vehicle Download PDF

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JP2011250531A
JP2011250531A JP2010119183A JP2010119183A JP2011250531A JP 2011250531 A JP2011250531 A JP 2011250531A JP 2010119183 A JP2010119183 A JP 2010119183A JP 2010119183 A JP2010119183 A JP 2010119183A JP 2011250531 A JP2011250531 A JP 2011250531A
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power supply
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battery
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Jun Saito
潤 齋藤
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Mitsubishi Motors 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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Abstract

PROBLEM TO BE SOLVED: To provide an external power supply voltage notification device for a motor-driven vehicle capable of, in charging a battery, notifying a user that the battery has a voltage drop in an external power supply.SOLUTION: An external power supply voltage notification device includes: an on-vehicle device 1a whose state changes; a voltage detection part 9a that detects a voltage of an external power supply 18 during charging a battery 6; and a control part 11 that varies a state of the on-vehicle device 1a based on a detection result of the power supply detection part 9a. In charging the battery, such a configuration enables the external power supply voltage notification device to notify the user that the battery has a voltage drop in the external power supply, from an operating state of the on-vehicle device 1a.

Description

本発明は、外部電源との接続により車搭載のバッテリに充電しているときにおける特定の挙動を知らせる電動車両の外部電源電圧報知装置に関する。   The present invention relates to an external power supply voltage notification device for an electric vehicle that notifies a specific behavior when a battery mounted on a vehicle is charged by connection to an external power supply.

電気自動車やプラグインハイブリッド車を含む電動車両は、車体に搭載したバッテリ（二次蓄電池）から電力を受けて走行用モータを駆動して走行する。しかし、バッテリの容量には限りがある。そのため、多くの電動車両には、バッテリに充電が行える設備（充電器）が装備され、１００Ｖや２００Ｖ電源といった外部電源（商用電源）を用いて充電が行えるようにしている。   An electric vehicle including an electric vehicle and a plug-in hybrid vehicle travels by receiving electric power from a battery (secondary storage battery) mounted on the vehicle body and driving a traveling motor. However, the capacity of the battery is limited. Therefore, many electric vehicles are equipped with a facility (charger) that can charge a battery, and can be charged using an external power source (commercial power source) such as a 100V or 200V power source.

一般に電動車両は、１００Ｖや２００Ｖの外部電源を用いて充電するときは、電動車両に付属されている充電ケーブルなどを用いて、車体に装備されている充電端子と建物などに設けた専用のコンセントとの間を接続することにより、コンセントからの電力が充電器（１００Ｖの場合）を経てバッテリに充電される。この充電中は、計器パネルに設けたランプが点灯して、充電中であることが知らされる。   In general, when an electric vehicle is charged using an external power supply of 100V or 200V, a charging terminal attached to the vehicle body and a dedicated outlet provided in a building are used using a charging cable attached to the electric vehicle. Is connected to the battery, the power from the outlet is charged to the battery via the charger (in the case of 100V). During this charging, a lamp provided on the instrument panel is turned on to inform that charging is in progress.

こうしたバッテリの充電には、かなりの充電時間を要する。例えば８０％程度の充電で、１００Ｖでは１４時間、２００Ｖでは７時間もの充電時間が必要とされている。この充電時間は、コンセントから定格通りに電圧が出力されるときの時間である。
ところで、家庭で用いられる外部電源は、他の電気機器の使用電力や地域にも関係するため、コンセントが設置されている電力環境などにより、定格値の１００Ｖや２００Ｖよりも低下していることがある。電圧低下があると、その分、バッテリの充電電力は低下するので、当初の定められている充電時間よりも長くなる。 Charging such a battery requires a considerable charging time. For example, charging at about 80% requires 14 hours at 100V and 7 hours at 200V. This charging time is the time when the voltage is output from the outlet as rated.
By the way, the external power source used at home is also related to the power used by other electrical devices and the region, so it may be lower than the rated value of 100 V or 200 V depending on the power environment where the outlet is installed. is there. If there is a voltage drop, the charging power of the battery is reduced accordingly, and the charging time is longer than the initially determined charging time.

しかし、使用者は、バッテリの充電の際、外部電源の電圧が定格値よりも低下していることはわからない。多くの電動車両では、先に述べたように充電中であることを示すランプは点灯するが、それでは外部電源の電圧低下までは判断できない。
電動車両では、特許文献１に開示されているように充電の進捗状況をミラーの角度で知らせる技術はあるが、外部電源の電圧低下までは知る由もない。 However, the user does not know that the voltage of the external power source is lower than the rated value when the battery is charged. In many electric vehicles, the lamp indicating that charging is in progress is turned on as described above, but this cannot be judged until the voltage of the external power source is lowered.
In the electric vehicle, there is a technique for notifying the progress of charging by the angle of the mirror as disclosed in Patent Document 1, but there is no reason to know the voltage drop of the external power supply.

特開２００９−２４０００８号公報JP 2009-240008 A

このため、使用者は、外部電源の電圧低下で充電時間が不用意に長くなり、充電が完了するまでの時間が経過しても、その理由がわからず、不安になり、機器の動作が不良になっているなど誤解を招きやすい。
そこで、本発明の目的は、使用者に、外部電源の電圧が低下しているバッテリ充電であることを知らせる電動車両の外部電源電圧報知装置を提供することにある。 For this reason, the user will be inadvertently lengthened the charging time due to the voltage drop of the external power supply. It is easy to be misunderstood.
Therefore, an object of the present invention is to provide an external power supply voltage notification device for an electric vehicle that informs a user that the battery is being charged with the voltage of the external power supply being reduced.

請求項１に記載の発明は、上記目的を達成するために、バッテリの充電時、外部電源の電圧を検出する電圧検出部と、検出された外部電源の電圧状態を報知する車両搭載装置の状態を可変させる制御部とを有するものとした。
同構成により、バッテリの充電の際、外部電源の電圧が定格の電圧よりも低下していると、車両搭載装置の作動状態は、その低下した電圧状態に応じて制御される。つまり、使用者は、車両搭載装置の作動状態を見ると、外部電源の電圧が低下していることが認識され、過度に充電時間が長くなることを理解し、充電を止めたり、家庭での使用電力を抑えたりなどの対応を促す。 In order to achieve the above object, according to the first aspect of the present invention, the state of the vehicle-mounted device that notifies the voltage state of the detected external power source and the voltage detection unit that detects the voltage of the external power source when the battery is charged. And a control unit that varies the above.
With this configuration, when the battery is charged, if the voltage of the external power supply is lower than the rated voltage, the operating state of the vehicle-mounted device is controlled according to the reduced voltage state. In other words, when the user sees the operating state of the vehicle-mounted device, the user recognizes that the voltage of the external power supply is decreasing, and understands that the charging time will be excessively long. Encourage measures such as reducing power consumption.

請求項２に記載の発明は、さらに車両搭載装置が頻繁に作動する煩わしさを解消するよう、車両搭載装置の作動状態の可変は、ヒステリシスを設けて、外部電源の電圧が所定の電圧差（ヒステリシス）以上つまり段階的に変動したときに行われるようにした。
請求項３に記載の発明は、バッテリの充電を終えた後、使用者が、車両に戻ってきたときでも、使用者に外部電力の低下が有った事実を伝えるよう、制御部は、外部電源が最も低下した電圧状態の車両搭載装置の作動状態を保ち続けるものとした。 According to the second aspect of the present invention, in order to eliminate the inconvenience of frequent operation of the vehicle-mounted device, the variable state of the vehicle-mounted device is provided with a hysteresis so that the voltage of the external power source has a predetermined voltage difference ( Hysteresis) This is done when it fluctuates in steps.
According to the third aspect of the present invention, the control unit externally transmits the fact that there is a decrease in external power to the user even when the user returns to the vehicle after charging the battery. The operation state of the vehicle-mounted device in the voltage state where the power supply is the lowest has been maintained.

請求項４に記載の発明は、さらに外部電圧の低下を使用者に伝えやすいよう、車両搭載装置としてドアミラーを用いることとした。   The invention according to claim 4 uses a door mirror as a vehicle-mounted device so that the user can easily be notified of a decrease in external voltage.

請求項１の発明によれば、バッテリの充電時、使用者に、車両搭載装置の可変状態から、外部電源の電圧が低下しているバッテリ充電であることを知らせることができる。
これにより、使用者は、たとえ過度に充電時間が長くても、同充電時間が長いのは、充電電力が低下していることが原因であることがわかり、安心できる。しかも、早期に原因がわかるので、家庭での使用電力を抑えたり、充電場所を代えたりなどの対応を速やかにとることができる。また使用者に、逐次、現在の外部電源の電圧状況を知らせることができ、迅速に対応を促すことができる。 According to the first aspect of the present invention, when charging the battery, the user can be informed of the battery charging in which the voltage of the external power source is decreasing from the variable state of the vehicle-mounted device.
Thereby, even if the charging time is excessively long, the user can be relieved that the charging time is long because the charging power is reduced. In addition, since the cause can be understood at an early stage, it is possible to quickly take measures such as reducing power consumption at home and changing the charging place. In addition, the user can be informed of the current voltage status of the external power supply sequentially, and prompt action can be urged.

請求項２の発明によれば、頻繁に車両搭載装置が可変しないので、煩わしさはなく、使用者は外部電源の電圧状況が認識しやすい。
請求項３の発明によれば、バッテリの充電後、使用者が、車両に戻ってきたときでも、使用者に外部電力の低下が有った過去の事実を知らせることができ、どのようなときでも使用者に電力低下の有ったことを伝えることができる。しかも、外部電源の電圧が最も低下した状況を維持しているので、どれだけの性能をもつ外部電源なのかがわかり、電動車両の充電に対する良否がわかる。 According to the second aspect of the present invention, since the vehicle mounting device is not frequently changed, there is no trouble and the user can easily recognize the voltage state of the external power source.
According to the invention of claim 3, even when the user returns to the vehicle after charging the battery, it is possible to inform the user of the past fact that there has been a decrease in external power. But you can tell the user that there was a power drop. In addition, since the state in which the voltage of the external power supply is the lowest has been maintained, it is possible to know how much the external power supply has, and whether the electric vehicle is charged or not can be determined.

請求項４の発明によれば、ドアミラーは、開度が全閉〜全開するという、大きく挙動が変化するので、車外からの視認性はよく、使用者に外部電圧の低下が伝えやすい。   According to the invention of claim 4, since the behavior of the door mirror is greatly changed such that the opening degree is fully closed to fully opened, visibility from the outside of the vehicle is good, and a decrease in external voltage is easily transmitted to the user.

本発明の第１の実施形態に係る電動車両の概略的な構成を示す図。The figure which shows schematic structure of the electric vehicle which concerns on the 1st Embodiment of this invention. 同電動車両の外部電源電圧報知装置の概略的回路を示すブロック図。The block diagram which shows the schematic circuit of the external power supply voltage alerting | reporting apparatus of the same electric vehicle. 同外部電源電圧報知装置の制御フローを示すフローチャート。The flowchart which shows the control flow of the external power supply voltage alerting | reporting apparatus. 同制御フローがもたらすドアミラーの開度により外部電源の電圧低下の報知を説明するための図。The figure for demonstrating alerting | reporting of the voltage drop of an external power supply with the opening degree of the door mirror which the same control flow brings. 本発明の第２の実施形態の要部となる外部電源電圧報知装置の制御フローを示すチャート。The chart which shows the control flow of the external power supply voltage alerting | reporting apparatus used as the principal part of the 2nd Embodiment of this invention. 同制御フローがもたらすドアミラーの開度により外部電源の電圧低下の報知を説明するための図。The figure for demonstrating alerting | reporting of the voltage drop of an external power supply with the opening degree of the door mirror which the same control flow brings. 本発明の第３の実施形態の要部となる異なるドアミラーを用いた報知の仕方を説明するための線図。The diagram for demonstrating the method of alerting | reporting using the different door mirror used as the principal part of the 3rd Embodiment of this invention.

以下、本発明を図１〜図４に示す第１の実施形態にもとづいて説明する。
図１は電動車両の概略構成図を示している。同電動車両の主な構成を説明すると、図中１は、操舵輪２（前輪）、駆動輪３（後輪）を備える車体である。この車体１には、駆動輪３を駆動する減速機付き走行用モータ４、充放電可能なバッテリとして例えば多数のリチウムイオンバッテリセルを接続してなるバッテリ６、インバータ７、バッテリ６につながる車載充電器９、バッテリ６に関する制御を行うＢＣＵ１１、電動車両の統括制御を行うＥＶＣＵ１２などが搭載されている。また車体１の車幅両側にはドアミラー１ａ（本願の車両搭載装置に相当）が、同ドアミラー１ａを駆動するアクチュエータ１ｂと共に設けられている。 Hereinafter, the present invention will be described based on a first embodiment shown in FIGS.
FIG. 1 shows a schematic configuration diagram of an electric vehicle. The main configuration of the electric vehicle will be described. In FIG. 1, reference numeral 1 denotes a vehicle body including a steering wheel 2 (front wheel) and a drive wheel 3 (rear wheel). The vehicle body 1 includes a travel motor 4 with a speed reducer that drives the drive wheels 3, a battery 6 that is connected to, for example, a large number of lithium ion battery cells as a chargeable / dischargeable battery, an inverter 7, and an in-vehicle charging that is connected to the battery 6. A battery unit 9, a BCU 11 that controls the battery 6, and an EVCU 12 that performs overall control of the electric vehicle are mounted. Further, door mirrors 1a (corresponding to the vehicle mounting device of the present application) are provided on both sides of the vehicle body 1 along with the actuator 1b for driving the door mirror 1a.

このうちバッテリ６は、インバータ７を介して走行用モータ４に接続され、バッテリ６に蓄えた電力で走行用モータ４が駆動できる。また車載充電器９は、車体１の例えば車幅方向片側の側部に設けた充電口１５に接続されている。この充電口１５は、例えば専用の充電ケーブル１７を使い、例えば戸建て家屋に設けてある専用のコンセント１８（外部電源に相当）に接続される。コンセント１８は、市中（商用）電源、具体的には１００Ｖの家庭用電源（あるいは２００Ｖ）につながり、１００Ｖ（あるいは２００Ｖ）といった定格電圧の電源によりバッテリ６の充電が行える。ＢＣＵ１１は、このバッテリ６の充電などバッテリ６に関する制御を行う。ＥＶＣＵ１２は、さらにモータ走行を考慮した統括的な制御を行う。   Among these, the battery 6 is connected to the traveling motor 4 via the inverter 7, and the traveling motor 4 can be driven by the electric power stored in the battery 6. The on-vehicle charger 9 is connected to a charging port 15 provided on one side of the vehicle body 1 in the vehicle width direction, for example. The charging port 15 is connected to, for example, a dedicated outlet 18 (corresponding to an external power source) provided in a detached house, for example, using a dedicated charging cable 17. The outlet 18 is connected to a commercial (commercial) power source, specifically, a household power source (or 200V) of 100V, and the battery 6 can be charged by a power source having a rated voltage of 100V (or 200V). The BCU 11 performs control related to the battery 6 such as charging of the battery 6. The EVCU 12 performs overall control that further considers motor travel.

また電動車両には、図２に示されるような例えばＢＣＵ１１をコントローラとして用いて構成した外部電源電圧報知装置２０が搭載されている。この外部電源電圧報知装置２０は、バッテリ充電時、当該バッテリ充電に使用する家庭用電源の電源電圧が、通常の定格電圧１００Ｖよりも低下していた場合、車両搭載装置、ここでは全閉〜全開まで移動可能なドアミラー１ａの動きを用いて、車外からその電源電圧の状態を使用者に知らせる装置である。   The electric vehicle is equipped with an external power supply voltage notification device 20 configured using, for example, the BCU 11 as a controller as shown in FIG. This external power supply voltage notification device 20 is a vehicle-mounted device, here fully closed to fully open, when the power supply voltage of the household power supply used for charging the battery is lower than the normal rated voltage 100V. It is a device that informs the user of the state of the power supply voltage from the outside of the vehicle using the movement of the door mirror 1a that can be moved up to.

同装置２０は、家庭用電源（外部電源）の電圧を検出する電圧検出部、検出した電圧状態に応じてドアミラー１ａのアクチュエータ１ｃを制御してドアミラー１ａの作動状態を制御するコントローラ（制御部）を組み合わせたものとなっている。具体的には、電圧検出部は車載充電器９に内蔵されている電圧センサ９が用いられ、コントローラはＢＣＵ１１が用いられる。   The apparatus 20 includes a voltage detection unit that detects the voltage of a household power supply (external power supply), and a controller (control unit) that controls the actuator 1c of the door mirror 1a according to the detected voltage state to control the operation state of the door mirror 1a. It is a combination. Specifically, the voltage sensor 9 built in the in-vehicle charger 9 is used for the voltage detection unit, and the BCU 11 is used for the controller.

すなわち、ＣＰＵや各種メモリなどを組み合わせて構成されるＢＣＵ１１には、例えばドアミラー１ａの全閉位置を９０Ｖとし、ドアミラー１ａの全開位置を１００Ｖ以上とした所定直線的なマップ（図３に図示）が設定され、家庭用電源の電圧状態に応じたドアミラー１ａの開度位置が算出されるようにしている。つまりＢＣＵ１１には、上記マップにしたがい現在の家庭用電源の電圧から同電圧に相当するドアミラー１ａの開度を算出する設定や、同算出された開度になるようアクチュエータ１ｂを駆動する設定がなされ、家庭電源の電圧状態が、ドアミラー１ａの開度位置にて、逐次、報知される構造にしてある。このマップに応じたドアミラー１ａの動きにより、充電開始から家庭電源の低下した電圧状態がわかる構造としてある。またこのドアミラー１ａが頻繁に行われないよう、ヒステリシスを設けて、所定の電圧差以上になるとドアミラー１ａの移動が実行（可変）、すなわち検出される外部電源の電圧の変化に応じてドアミラー１ａの状態を段階的に可変させるようにしている。これで、逐次、現在の家庭電源の電圧状況が更新される設定にしてある。   That is, the BCU 11 configured by combining a CPU and various memories has a predetermined linear map (shown in FIG. 3) in which, for example, the fully closed position of the door mirror 1a is 90V and the fully open position of the door mirror 1a is 100V or more. It is set and the opening position of the door mirror 1a is calculated according to the voltage state of the household power supply. That is, the BCU 11 is set to calculate the opening degree of the door mirror 1a corresponding to the same voltage from the current voltage of the household power source according to the above map, and to set the driving of the actuator 1b so as to be the calculated opening degree. The voltage state of the household power source is sequentially notified at the opening position of the door mirror 1a. By the movement of the door mirror 1a according to this map, the voltage state in which the home power supply has decreased from the start of charging is known. Further, in order to prevent the door mirror 1a from being frequently used, a hysteresis is provided, and when the voltage difference exceeds a predetermined voltage difference, the movement of the door mirror 1a is executed (variable), that is, the door mirror 1a is moved according to the detected voltage change of the external power source. The state is varied step by step. Thus, the current voltage status of the household power supply is sequentially updated.

こうした外部電源電圧報知装置２０にて、バッテリ充電時の際、車外から、過度の充電時間を費やす原因となる、家庭電源の電圧が所定電圧、すなわち定格１００Ｖ以下になる電圧状況がわかる。
すなわち、同作用を図３に示す外部電源電圧報知装置２０の制御フローに基づき説明する。ここで、同フローのルーチンは所定時間毎に繰り返し実行されるものである。 With such an external power supply voltage notification device 20, it is possible to know a voltage situation in which the voltage of the home power supply becomes a predetermined voltage, that is, a rating of 100 V or less, which causes excessive charging time from the outside of the vehicle when charging the battery.
That is, the operation will be described based on the control flow of the external power supply voltage notification device 20 shown in FIG. Here, the routine of the same flow is repeatedly executed every predetermined time.

同制御フローを説明する前に、電動車両の家庭用電源を用いての充電を説明する。
例えば使用者の自宅の駐車スペースに電動車両を駐車してから、充電口１５を開放して、専用の充電ケーブル１７で、同充電口１７の充電端子（図示しない）と駐車スペースの近くに設けてある専用のコンセント、例えば１００Ｖのコンセント１８とを接続すると、コンセント１８からの電力が車載充電器９を経てバッテリ６に充電される。 Before describing the control flow, charging using an electric vehicle household power supply will be described.
For example, after the electric vehicle is parked in the parking space of the user's home, the charging port 15 is opened, and a dedicated charging cable 17 is provided near the charging terminal (not shown) of the charging port 17 and the parking space. When a dedicated outlet such as a 100V outlet 18 is connected, power from the outlet 18 is charged to the battery 6 via the in-vehicle charger 9.

このようにしてバッテリ６の充電が開始されると、まず、ステップＳ１に示されるようにＢＣＵ１１は充電中か否かの判断が行われる。ここで、充電中であるから、ステップＳ２へ進み、所定電圧値である所定値Ａと対比し、既にドアミラー１ａの開度を定める開度算出電圧が得られているか否かを判定する。この段階は、未だドアミラー１ａの開度を算出するための電圧は得られていない当初の状態（０Ｖ）なので、ステップＳ３へ進む。ステップＳ３により、例えばドアミラー１ａの開度（全閉〜全開）と、９０Ｖ以下と１００Ｖ以上との間の範囲に渡り定めた電圧域とを関連付けて設定した一次曲線的なマップから、現在の家庭用電源の電圧状態に応じたドアミラー１ａの開度、すなわち開度算出電圧が算出される。ついで、ステップＳ４へ進む。   When charging of the battery 6 is started in this way, first, as shown in step S1, it is determined whether or not the BCU 11 is being charged. Here, since the battery is being charged, the process proceeds to step S2 and is compared with a predetermined value A which is a predetermined voltage value to determine whether or not an opening calculation voltage for determining the opening of the door mirror 1a has already been obtained. Since this stage is the initial state (0 V) in which the voltage for calculating the opening degree of the door mirror 1a has not yet been obtained, the process proceeds to step S3. In step S3, for example, the current home is determined from a linear curve map set by associating the opening degree (fully closed to fully opened) of the door mirror 1a with a voltage range defined over a range between 90 V or less and 100 V or more. The opening degree of the door mirror 1a corresponding to the voltage state of the power supply for power, that is, the opening degree calculation voltage is calculated. Then, the process proceeds to step S4.

すると、ＢＣＵ１１により、アクチュエータ１ｂを通じドアミラー１ａは、算出された開度算出電圧値に相当する開度位置になるように制御される。
ここで、例えばドアミラー１ａの可動範囲（表示範囲）は、図４に示されるように上記マップにならい、全閉位置だと９０Ｖ以下を示し、全開位置だと１００Ｖ以上を示し、９０Ｖ〜１００Ｖ範囲は中間領域を示すことにしてあるから、定格１００Ｖの家庭用電源が、それよりも低下している電圧であると、図４中の実線で示すドアミラー１ａ位置のように中間領域の有る地点に止まる。 Then, the door mirror 1a is controlled by the BCU 11 through the actuator 1b so as to be in an opening position corresponding to the calculated opening calculation voltage value.
Here, for example, the movable range (display range) of the door mirror 1a follows the map as shown in FIG. 4 and indicates 90 V or less when in the fully closed position, 100 V or more when in the fully open position, and the range of 90 V to 100 V. Indicates a middle region, so that if the household power supply with a rated voltage of 100 V has a voltage lower than that, a position where there is a middle region such as the position of the door mirror 1a indicated by the solid line in FIG. Stop.

一度、ドアミラー１ａの制御が行われると、このときの開度算出電圧が記憶される（ステップＳ４）。
この後、ステップＳ５へ進み、記憶した開度算出電圧と現在の家庭用電源の電圧との差を対比する所定値Ｂと対比する。所定値Ｂは、頻繁にドアミラー１ａを動かさないようヒステリシスをもたせる所定の電圧差Ｂで設定されている。そして、所定値Ｂである所定の電圧差Ｂ以上のときのみ、再びステップＳ３へ戻り、再度、ドアミラー１ａの開度を制御する。また電圧差Ｂが下回るときは、再びステップＳ１へ戻り、ステップＳ２、ステップＳ５をループして、ドアミラー１ａを止める。 Once the door mirror 1a is controlled, the opening calculation voltage at this time is stored (step S4).
Thereafter, the process proceeds to step S5, where a comparison is made with a predetermined value B that compares the difference between the stored opening degree calculation voltage and the current voltage of the household power supply. The predetermined value B is set at a predetermined voltage difference B that provides hysteresis so as not to frequently move the door mirror 1a. Then, only when the voltage difference B is equal to or greater than the predetermined voltage B, the process returns to step S3 and the opening degree of the door mirror 1a is controlled again. When the voltage difference B is lower, the process returns to step S1, loops through steps S2 and S5, and stops the door mirror 1a.

つまりドアミラー１ａの作動状態から、使用者に、家庭用電源（外部電源）の電圧が低下しているバッテリ充電であることを知らせることができる。特にドアミラー１ａには、図示はしないが家庭用電源の電圧値を示す目盛りが設けてあり、使用者は当該目盛りから容易に把握できる。
これにより、使用者は、たとえ過度に充電時間が長くても、同充電時間が長いのは、充電電力が低下していることが原因であることがわかり、安心できる。しかも、早期に原因がわかるので、家庭での使用電力を抑えたり、充電場所を代えたりなど対応を速やかにとることができる。 That is, from the operating state of the door mirror 1a, it is possible to inform the user that the battery is being charged with the voltage of the household power supply (external power supply) being lowered. In particular, the door mirror 1a is provided with a scale (not shown) indicating the voltage value of the household power supply, and the user can easily grasp the scale from the scale.
Thereby, even if the charging time is excessively long, the user can be relieved that the charging time is long because the charging power is reduced. In addition, since the cause is known at an early stage, it is possible to quickly take measures such as reducing power consumption at home or changing the charging place.

特に家庭用電源の電圧が変動する都度、ドアミラー１ａの開度（作動状態）を変更させたので、現在の家庭用電源の電圧情況を、逐次、使用者に伝えることができる。しかも、同ドアミラー１ａの開度の変更は、所定の電圧差以上になると行わせるというヒステリシスにより段階的に可変し、煩わしさはない。
そのうえ、ドアミラーは、開度が全閉〜全開するという、大きく挙動が変化するので、車外からの視認性はよく、使用者に家庭用電源の低下が伝えやすい。 In particular, since the opening degree (operating state) of the door mirror 1a is changed each time the voltage of the household power supply fluctuates, the current voltage status of the household power supply can be sequentially transmitted to the user. Moreover, the change of the opening degree of the door mirror 1a is changed stepwise by the hysteresis that is performed when the voltage difference becomes greater than a predetermined voltage difference, and there is no troublesomeness.
In addition, since the door mirror changes its behavior such that the opening degree is fully closed to fully open, the visibility from the outside of the vehicle is good, and it is easy for the user to tell the user that the household power supply is reduced.

図５および図６は、本発明の第２の実施形態を示す。
第２の実施形態は、第１の実施形態における現在の家庭用電源（外部電源）の電圧状態を随時ドアミラー１ａの開度で表示する制御とは異なり、検出された家庭用電源（外部電源）の電源が最小の場合のドアミラー１ａの状態を保持することによって、家庭用電源（外部電源）の電圧が低下したことを使用者に知らせようとしたものである。 5 and 6 show a second embodiment of the present invention.
The second embodiment is different from the control in which the voltage state of the current household power supply (external power supply) in the first embodiment is displayed as needed by the opening degree of the door mirror 1a, and the detected household power supply (external power supply). By maintaining the state of the door mirror 1a when the power supply of the power supply is minimum, the user tries to notify the user that the voltage of the household power supply (external power supply) has decreased.

具体的には、図１の制御フローのステップＳ５の代わりに、図５に示す制御フローのように現在の家庭用電源の電圧が、記憶したドアミラー１ａの開度算出電圧よりも低い場合のみ、現在の家庭用電源の電圧にしたがい、再度、ドアミラー１ａの開度電圧を算出する処理を設けて、検出された家庭用電源の電圧が最小の場合のミラー開度状態を保持するようにし、ドアミラー１ａの開度を小さくなる側だけ制御しようとしたものである。   Specifically, instead of step S5 in the control flow of FIG. 1, only when the current household power supply voltage is lower than the stored opening degree calculation voltage of the door mirror 1a as in the control flow shown in FIG. According to the voltage of the current household power supply, a process for calculating the opening voltage of the door mirror 1a is provided again so as to maintain the mirror opening state when the detected voltage of the household power supply is the minimum, and the door mirror It is intended to control only the side where the opening degree of 1a becomes smaller.

このようにすると、ドアミラー１ａは、図６に示されるように家庭用電源（外部電源）が最も低下した電圧状態を表示し続けるので（最低低下位置）、バッテリの充電を終えた後、使用者が、車両に戻ってきたときでも、使用者に外部電力の低下が有った事実を知らせることができる。このため、どのようなときでも使用者に電力低下が見られる家庭用電源であることを伝えることができる。しかも、電圧が最も低下した状況を残しているので、どれだけの性能をもつ家庭用電源なのかがわかり、同家庭用電源が電動車両の充電に対して適したものか否かが判定できる。   In this way, the door mirror 1a continues to display the voltage state in which the household power supply (external power supply) is the lowest as shown in FIG. 6 (lowest lowered position). However, even when returning to the vehicle, the user can be informed of the fact that there has been a decrease in external power. For this reason, it is possible to tell the user that the power source is a household power source in which power reduction is observed at any time. In addition, since the voltage remains at the lowest level, it can be determined how much power the household power supply has, and it can be determined whether the household power supply is suitable for charging the electric vehicle.

図７は、本発明の第３の実施形態を示す。
第１、第２の実施形態の変形例で、車体１の幅方向両側に有るドアミラー１ａ，１ａのうちの片側、例えば右側のドアミラー１ａの開度で、現在の家庭用電源の電圧を指示し（第１の実施形態の制御による）、残る片側、例えば左側のドアミラー１ａの開度で、最も低下した家庭用電源の電圧を指示（第２の実施形態の制御による）してもよい。このようにすると、現在の家庭用電源の電圧の変動のみならず、過去の最も大きく変動した電圧までもわかり、これらの情報から電動車両の充電に最も適した場所を知ることができる。 FIG. 7 shows a third embodiment of the present invention.
In a modification of the first and second embodiments, the current household power supply voltage is indicated by the opening degree of one of the door mirrors 1a, 1a on both sides in the width direction of the vehicle body 1, for example, the right door mirror 1a. You may instruct | indicate the voltage of the household power supply which fell most by the opening degree of the door mirror 1a of the remaining one side, for example, the left side (by control of 1st Embodiment) (by control of 2nd Embodiment). In this way, not only the current fluctuation of the voltage of the household power supply but also the voltage that has changed the most greatly in the past can be known, and from this information, the most suitable place for charging the electric vehicle can be known.

なお、本発明は上述した実施形態に限定されるものではなく、本発明の主旨を逸脱しない範囲内で種々可変して実施しても構わない。例えば一実施形態では、車外から視認可能な車両搭載装置としてドアミラーを用いた例を挙げたが、これに限らず、他の車載機器、例えば伸縮式のコーナポールや伸縮式のパワーアンテナなどを用いてもよい。また、ランプの明暗の程度により外部電源の電圧を表してもよい。   Note that the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. For example, in one embodiment, an example in which a door mirror is used as a vehicle-mounted device that can be seen from the outside of the vehicle has been described. However, the present invention is not limited thereto, and other in-vehicle devices such as a telescopic corner pole or a telescopic power antenna are used. May be. Further, the voltage of the external power supply may be represented by the brightness of the lamp.

１ａ ドアミラー（車両搭載装置）
６ バッテリ
１８ コンセント（外部電源）
９ａ 電圧センサ（電圧検出部）
１１ ＢＣＵ（制御部） 1a Door mirror (vehicle mounted device)
6 Battery 18 Outlet (external power supply)
9a Voltage sensor (voltage detector)
11 BCU (control unit)

Claims (4)

車両の外部電源との接続により前記車両に搭載されたバッテリが充電される電動車両において、
前記バッテリの充電時に前記外部電源の電圧を検出する電圧検出部と、
前記車両に搭載されて状態が変化する車両搭載装置と、
前記電圧検出部の結果に基づき、前記車両搭載装置の状態を可変させる制御部と
を有することを特徴とする電動車両の外部電源電圧報知装置。 In an electric vehicle in which a battery mounted on the vehicle is charged by connection with an external power source of the vehicle,
A voltage detection unit for detecting a voltage of the external power supply when charging the battery;
A vehicle-mounted device that changes state when mounted on the vehicle;
An external power supply voltage notification device for an electric vehicle, comprising: a control unit that varies a state of the vehicle mounting device based on a result of the voltage detection unit. 前記制御部は、前記検出された外部電源の電圧の変動に応じて前記車両搭載装置の状態を段階的に可変させることを特徴とする請求項１に記載の電動車両の外部電源電圧報知装置。   2. The external power supply voltage notification device for an electric vehicle according to claim 1, wherein the control unit varies the state of the vehicle-mounted device in a stepwise manner according to the detected voltage fluctuation of the external power supply. 前記制御部は、前記検出された外部電源の電圧が最小の場合の前記車両搭載装置の状態を保持することを特徴とする請求項１に記載の電動車両の外部電源電圧報知装置。   2. The external power supply voltage notification device for an electric vehicle according to claim 1, wherein the control unit maintains a state of the vehicle-mounted device when the detected external power supply voltage is minimum. 前記車両搭載装置は、ドアミラーであることを特徴とする請求項１ないし請求項３のいずれか一つに記載の電動車両の外部電源電圧報知装置。   The external power supply voltage notification device for an electric vehicle according to any one of claims 1 to 3, wherein the vehicle mounting device is a door mirror.
JP2010119183A 2010-05-25 2010-05-25 External power supply voltage notification device for motor-driven vehicle Pending JP2011250531A (en)

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JP2012157189A (en) * 2011-01-27 2012-08-16 Toyota Motor Corp Vehicle and method for controlling the same
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