JP6573070B2 - Control device for electric vehicle - Google Patents

Control device for electric vehicle Download PDF

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JP6573070B2
JP6573070B2 JP2015153592A JP2015153592A JP6573070B2 JP 6573070 B2 JP6573070 B2 JP 6573070B2 JP 2015153592 A JP2015153592 A JP 2015153592A JP 2015153592 A JP2015153592 A JP 2015153592A JP 6573070 B2 JP6573070 B2 JP 6573070B2
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charging
electric vehicle
normal
battery
normal charging
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JP2017034888A (en
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裕樹 河村
裕樹 河村
森田　博之
博之 森田
義晃 大田
義晃 大田
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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
    • 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)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

本発明は、複数の電池セルと、各電池セルの電圧差を抑制するためのバランサ回路と、を有するバッテリを備える電動車両の制御装置に関する。   The present invention relates to a control device for an electric vehicle including a battery having a plurality of battery cells and a balancer circuit for suppressing a voltage difference between the battery cells.

電気自動車やプラグインハイブリッド自動車等の電動車両に搭載されるバッテリ（二次電池）は、例えば、家庭用電源による普通充電、又は専用の電源を用いた急速充電により、電力が供給されるように構成されている。   A battery (secondary battery) mounted on an electric vehicle such as an electric vehicle or a plug-in hybrid vehicle is supplied with power by, for example, ordinary charging using a household power source or rapid charging using a dedicated power source. It is configured.

バッテリは、複数の電池セルを備えており、充放電サイクルを繰り返しているうちに、各電池セル間の温度状態や劣化状況の違い等に起因して、各電池セル間に電圧差が生じてしまう。そして、バッテリの充電時には、最高セル電圧が許容最高電圧に達すると充電を停止し、放電時には、最低セル電圧が許容最低電圧になると放電を停止する。このため、バッテリを構成する各電池セルの電圧差が小さいほど、バッテリが本来有する電池容量をより多く使用することができる。したがって、バッテリを構成する各電池セルの電圧差は極力小さく状態に維持されていることが好ましい。   The battery includes a plurality of battery cells, and a voltage difference occurs between the battery cells due to a difference in temperature state or deterioration state between the battery cells while the charge / discharge cycle is repeated. End up. When the battery is charged, charging is stopped when the maximum cell voltage reaches the allowable maximum voltage, and during discharging, discharging is stopped when the minimum cell voltage reaches the allowable minimum voltage. For this reason, the smaller the voltage difference between the battery cells constituting the battery, the more battery capacity that the battery originally has can be used. Therefore, it is preferable that the voltage difference between the battery cells constituting the battery is kept as small as possible.

しかしながら、バッテリを構成する各電池セルの電圧差は、バッテリを使用するに従い大きくなる。このため、実際に使用できるバッテリの電池容量は、バッテリを使用するに従い、徐々に減少してしまう。   However, the voltage difference between the battery cells constituting the battery increases as the battery is used. For this reason, the battery capacity of the battery that can actually be used gradually decreases as the battery is used.

このような問題を解消するために、各電池セルに対応するバランサ回路を備えるようにしたバッテリがある。バランサ回路によって電圧の高い電池セルを放電させることで、各電池セル間の電圧差を低減させることができる（例えば、特許文献１参照）。   In order to solve such a problem, there is a battery provided with a balancer circuit corresponding to each battery cell. By discharging the battery cell having a high voltage by the balancer circuit, the voltage difference between the battery cells can be reduced (for example, see Patent Document 1).

特開２０１２−１９１６７９号公報JP 2012-191679 A

しかしながら、このようなバランサ回路は、通常、普通充電中に作動される。このため、バッテリがバランサ回路を備えていても、急速充電を多用して普通充電を実行する頻度の少ない場合、バッテリの電池容量を十分に使い切れない虞がある。   However, such balancer circuits are usually operated during normal charging. For this reason, even if the battery includes a balancer circuit, there is a possibility that the battery capacity of the battery may not be used up sufficiently when frequent charging is performed frequently using frequent quick charging.

本発明は、このような事情に鑑みてなされたものであり、バッテリの普通充電を適切に実行させることができる電動車両の制御装置を提供することを目的とする。   This invention is made | formed in view of such a situation, and it aims at providing the control apparatus of the electric vehicle which can perform normal charge of a battery appropriately.

上記課題を解決する本発明の第１の態様は、普通充電又は急速充電により充電される複数の電池セルと、前記普通充電時に作動して前記電池セルの放電を行うバランサ回路と、を有するバッテリを備えた電動車両の制御装置であって、各電池セルの電圧を検出すると共に、各電池セル間の電圧差の最大値を算出する電圧差算出手段と、前記電圧差算出手段によって算出された前記電圧差の最大値が所定閾値を超えている場合に、前記普通充電の実行を促す普通充電推奨情報を提示する情報提示手段と、を備え、前記普通充電推奨情報には、前記普通充電を実行することによりユーザが得られる効果の情報が含まれていることを特徴とする電動車両の制御装置にある。 A first aspect of the present invention that solves the above problem includes a battery having a plurality of battery cells that are charged by normal charging or rapid charging, and a balancer circuit that operates during the normal charging and discharges the battery cells. a control apparatus for an electric vehicle having a detects a voltage of each battery cell, and the voltage difference calculating means for calculating the maximum value of the voltage difference between the battery cells was calculated by the voltage difference calculating means And an information presenting means for presenting normal charge recommendation information for encouraging execution of the normal charge when the maximum value of the voltage difference exceeds a predetermined threshold, and the normal charge is included in the normal charge recommendation information. The control apparatus for an electric vehicle includes information on an effect obtained by the user by executing .

本発明の第２の態様は、第１の態様の電動車両の制御装置であって、前記普通充電推奨情報には、前記普通充電の推奨充電時間と、該推奨充電時間で前記普通充電を行うことにより前記急速充電で満充電まで充電を行った場合に比べて延びる航続距離と、が含まれていることを特徴とする電動車両の制御装置にある。 According to a second aspect of the present invention, there is provided the control device for the electric vehicle according to the first aspect, wherein the normal charge recommendation information includes the recommended charge time for the normal charge and the normal charge for the recommended charge time. Thus, the cruising distance that is longer than that in the case where the battery is fully charged by the quick charge is included.

本発明の第３の態様は、第１又は２の態様の電動車両の制御装置であって、前記普通充電推奨情報には、前記普通充電で満充電までにかかる満充電時間と、該満充電時間で前記普通充電を行うことにより前記急速充電で満充電まで充電を行った場合に比べて延びる航続距離と、が含まれていることを特徴とする電動車両の制御装置にある。 According to a third aspect of the present invention, there is provided the control device for an electric vehicle according to the first or second aspect, wherein the normal charge recommendation information includes a full charge time required for the normal charge until the full charge, and the full charge. The electric vehicle control apparatus includes a cruising distance that is longer than that in a case where the normal charging is performed over time and the quick charging is performed until the battery is fully charged.

本発明の第４の態様は、第１から３の何れか一つの態様の電動車両の制御装置であって、前記情報提示手段は、前記電動車両が備える情報表示部に、前記普通充電推奨情報を表示させることを特徴とする電動車両の制御装置にある。 According to a fourth aspect of the present invention, there is provided the control device for an electric vehicle according to any one of the first to third aspects, wherein the information presenting means is provided on the information display unit provided in the electric vehicle with the normal charging recommendation information. Is displayed in the control device for the electric vehicle.

かかる本発明の電動車両の制御装置によれば、普通充電推奨情報の提示により、ユーザが普通充電を適切に実行することで、電動車両の航続距離を伸ばすことができる。特に、普通充電推奨情報として、普通充電を実行することによりユーザが得られる効果の情報を提示することで、ユーザに対してより効果的に普通充電を促すことができる。   According to the control device for an electric vehicle of the present invention, the cruising distance of the electric vehicle can be increased by appropriately performing the normal charging by the user by presenting the normal charging recommendation information. In particular, by presenting information on the effect obtained by the user by executing the normal charging as the normal charging recommendation information, the user can be urged to perform the normal charging more effectively.

本発明の一実施形態に係る電動車両の概略構成を示す図である。It is a figure showing the schematic structure of the electric vehicle concerning one embodiment of the present invention. バランサ回路を備えるバッテリの概略構成を説明するための模式図である。It is a schematic diagram for demonstrating schematic structure of a battery provided with a balancer circuit. 本発明に係る電動車両の制御装置の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the control apparatus of the electric vehicle which concerns on this invention. 本発明の一実施形態に係る普通充電推奨情報を説明するための模式図である。It is a schematic diagram for demonstrating the normal charge recommendation information which concerns on one Embodiment of this invention.

以下、本発明を実施するための形態について説明する。
図１は電動車両の概略構成を示す図であり、図２はバランサ回路を備えるバッテリの概略構成を説明するための模式図であり、図３は電動車両の制御装置の概略構成を示すブロック図である。 Hereinafter, modes for carrying out the present invention will be described.
FIG. 1 is a diagram showing a schematic configuration of an electric vehicle, FIG. 2 is a schematic diagram for explaining a schematic configuration of a battery including a balancer circuit, and FIG. 3 is a block diagram showing a schematic configuration of a control device for the electric vehicle. It is.

本実施形態に係る電動車両１は、電気自動車（ＥＶ）であり、二次電池であるバッテリ２と、このバッテリ２からの電力供給により作動する電動機である走行用モータ３と、を備えている。走行用モータ３は、駆動機構４を介して駆動輪（本実施形態では、前輪）５に連結されている。また電動車両１には、各種メータ類と共に、各種情報を表示する情報表示部７を有するインストゥルメントパネル８が設けられている。   The electric vehicle 1 according to the present embodiment is an electric vehicle (EV), and includes a battery 2 that is a secondary battery and a traveling motor 3 that is an electric motor that operates by supplying power from the battery 2. . The traveling motor 3 is connected to driving wheels (in this embodiment, front wheels) 5 via a driving mechanism 4. In addition, the electric vehicle 1 is provided with an instrument panel 8 having an information display unit 7 for displaying various information along with various meters.

ここで、バッテリ２は、例えば、図２に示すように、直列に接続された複数の電池セル２１と、各電池セル２１に対応するバランサ回路２２と、を備えている。また各電池セル２１には、電池セル２１の電圧を検出するためのセル電圧モニタ（電圧検出手段）２３が設けられている。バランサ回路２２は、直列に接続されたスイッチ２４と抵抗２５とを、各電池セル２１に対応して備えている。このバランサ回路２２が設けられていることで、各電池セル２１間の電圧差を小さくして、バッテリ２の実質的な充電容量の低下を抑制することができるようになっている。   Here, for example, as illustrated in FIG. 2, the battery 2 includes a plurality of battery cells 21 connected in series and a balancer circuit 22 corresponding to each battery cell 21. Each battery cell 21 is provided with a cell voltage monitor (voltage detection means) 23 for detecting the voltage of the battery cell 21. The balancer circuit 22 includes a switch 24 and a resistor 25 connected in series corresponding to each battery cell 21. By providing the balancer circuit 22, the voltage difference between the battery cells 21 can be reduced, and a substantial reduction in the charge capacity of the battery 2 can be suppressed.

またバッテリ２は、急速充電及び普通充電の二つの充電方式に対応して外部電源による充電が可能となっている。急速充電とは、バッテリ２を短時間で充電することを目的とし、外部電源として専用の急速充電設備を用いて、バッテリ２に大電流（普通充電よりも大きい電流）を流すことにより行われる充電方式である。普通充電とは、外部電源として、例えば、家庭用電源等を使用し、バッテリ２に急速充電よりも少ない電流を流すことにより行われる充電方式である。   Further, the battery 2 can be charged by an external power source in accordance with two charging methods of quick charging and normal charging. The quick charging is intended to charge the battery 2 in a short time, and charging is performed by passing a large current (current larger than normal charging) through the battery 2 using a dedicated rapid charging facility as an external power source. It is a method. The normal charging is a charging method that is performed by using, for example, a household power source as an external power source, and flowing a smaller current to the battery 2 than the quick charging.

電動車両１のユーザは、バッテリ２の充電を行う際、普通充電又は急速充電の何れか一方の充電方式を選択して、所定の外部電源とバッテリ２とを接続して充電する。電動車両１には、外部電源に繋がる給電コネクタが接続される充電口（インレット）９が設けられている。なお充電口９は、普通充電用及び急速充電用にそれぞれ設けられていてもよいし、普通充電用及び急速充電用に共通し設けられていてもよい。   When charging the battery 2, the user of the electric vehicle 1 selects either the normal charging or the quick charging and connects the predetermined external power source and the battery 2 to charge. The electric vehicle 1 is provided with a charging port (inlet) 9 to which a power feeding connector connected to an external power source is connected. The charging port 9 may be provided for normal charging and quick charging, respectively, or may be provided in common for normal charging and quick charging.

また電動車両１は、電動車両１の総合的な制御を行う制御装置１０を備えている。この制御装置１０は、例えばマイクロプロセッサやＲＯＭ、ＲＡＭ等を集積したＬＳＩデバイスや組み込み電子デバイスとして構成され、電動車両１に設けられた車載ネットワーク網の通信ラインに接続されている。   The electric vehicle 1 also includes a control device 10 that performs comprehensive control of the electric vehicle 1. The control device 10 is configured as, for example, an LSI device or an embedded electronic device in which a microprocessor, ROM, RAM, and the like are integrated, and is connected to a communication line of an in-vehicle network provided in the electric vehicle 1.

そして制御装置１０は、電動車両１の制御の一つとして、例えば、バッテリ２の充電を行う際に、バランサ回路２２の動作を適宜制御している（バランサ回路制御部）。すなわち、バッテリ２の充電の際、電池セル２１間に電圧差が生じていると、所定電池セル２１に対応するスイッチ２４をオンにし、バランサ回路２２を作動させ、抵抗２５によりその電池セル２１を放電させ、電圧差を抑制する。   For example, when the battery 2 is charged, the control device 10 appropriately controls the operation of the balancer circuit 22 as one control of the electric vehicle 1 (balancer circuit control unit). That is, when a voltage difference is generated between the battery cells 21 during charging of the battery 2, the switch 24 corresponding to the predetermined battery cell 21 is turned on, the balancer circuit 22 is operated, and the battery cell 21 is connected by the resistor 25. Discharge to suppress voltage difference.

バランサ回路２２を作動させて電池セル２１を放電させるには、ある程度の時間を要するため、本発明に係る制御装置１０では、急速充電時にバランサ回路２２を作動させることはなく、普通充電時にバランサ回路２２を適宜作動させている。   Since it takes a certain amount of time to operate the balancer circuit 22 and discharge the battery cell 21, the control device 10 according to the present invention does not operate the balancer circuit 22 during the quick charge, and does not operate the balancer circuit during the normal charge. 22 is operated appropriately.

このため、ユーザがバッテリ２の充電方式として急速充電を多用する場合、バランサ回路２２が作動する機会が少なくなり、バッテリ２を構成する電池セル２１間の電圧差が大きくなってしまう虞がある。   For this reason, when the user frequently uses rapid charging as the charging method of the battery 2, the opportunity for the balancer circuit 22 to operate is reduced, and the voltage difference between the battery cells 21 constituting the battery 2 may be increased.

そこで、本発明に係る制御装置１０は、電動車両１の制御の一つとして、バッテリ２を構成する電池セル２１間の電圧差を適宜算出し、その電圧差が所定閾値を超えていると判定した場合に、普通充電の実行を促す普通充電推奨情報を提示する情報提示制御を実行するようにした。   Therefore, the control device 10 according to the present invention appropriately calculates a voltage difference between the battery cells 21 constituting the battery 2 as one of the controls of the electric vehicle 1, and determines that the voltage difference exceeds a predetermined threshold value. In such a case, the information presentation control for presenting the normal charging recommendation information that prompts the execution of the normal charging is executed.

以下、このような制御装置１０における情報提示制御について、詳細に説明する。
制御装置１０は、情報提示制御部１１を備え、情報提示制御部１１は、電圧差算出手段１２と、電圧差判定手段１３と、情報提示手段１４と、を備えている。本実施形態では、これら電圧差算出手段１２、電圧差判定手段１３及び情報提示手段１４を含む情報提示制御部１１は、制御装置１０により実行されるプログラムの機能として実装されている。もちろん、情報提示制御部１１は、電子回路（ハードウェア）として実装されていてもよい。 Hereinafter, the information presentation control in the control device 10 will be described in detail.
The control device 10 includes an information presentation control unit 11, and the information presentation control unit 11 includes a voltage difference calculation unit 12, a voltage difference determination unit 13, and an information presentation unit 14. In the present embodiment, the information presentation control unit 11 including the voltage difference calculation unit 12, the voltage difference determination unit 13, and the information presentation unit 14 is implemented as a function of a program executed by the control device 10. Of course, the information presentation control unit 11 may be implemented as an electronic circuit (hardware).

電圧差算出手段１２は、バッテリ２が備えるセル電圧モニタ２３からの情報を取得して各電池セル２１の電圧を検出すると共に、それらの電圧差（最大値）Ｖｄを算出する。なお電圧差算出手段１２は、電圧差Ｖｄを常時算出するようにしてもよいし、所定のタイミング、例えば、バッテリ２の充電率（ＳＯＣ）が所定値を下回った際に検出するようにしてもよい。   The voltage difference calculation means 12 acquires information from the cell voltage monitor 23 provided in the battery 2 to detect the voltage of each battery cell 21 and calculates the voltage difference (maximum value) Vd. The voltage difference calculation means 12 may always calculate the voltage difference Vd, or may detect it at a predetermined timing, for example, when the charging rate (SOC) of the battery 2 falls below a predetermined value. Good.

電圧差判定手段１３は、電圧差算出手段１２によって算出された電圧差Ｖｄが、所定閾値Ｖｔを超えているか否かを判定する。所定閾値Ｖｔは、予め設定されており、その大きさは、バッテリ２の電気容量等に基づいて適宜設定されればよい。   The voltage difference determination unit 13 determines whether or not the voltage difference Vd calculated by the voltage difference calculation unit 12 exceeds a predetermined threshold value Vt. The predetermined threshold value Vt is set in advance, and the size thereof may be set as appropriate based on the electric capacity of the battery 2 or the like.

情報提示手段１４は、電圧差判定手段１３によって電圧差Ｖｄが所定閾値Ｖｔを超えていると判定された場合に、普通充電を促すための普通充電推奨情報をユーザに対して提示する。本実施形態では、情報提示手段１４は、インストゥルメントパネル８の情報表示部７に普通充電推奨情報を表示する。なお情報表示部７の構成は特に限定されないが、本実施形態では、情報表示部７は、図４に示すように、普通充電を推奨する旨の図形が描かれたインジケータランプ７ａや、普通充電を推奨する旨の文字情報を表示するモニタ部７ｂ等を備えている。   When the voltage difference determining unit 13 determines that the voltage difference Vd exceeds the predetermined threshold value Vt, the information presenting unit 14 presents normal charging recommendation information for prompting normal charging to the user. In the present embodiment, the information presentation unit 14 displays the normal charging recommendation information on the information display unit 7 of the instrument panel 8. Although the configuration of the information display unit 7 is not particularly limited, in the present embodiment, as shown in FIG. 4, the information display unit 7 includes an indicator lamp 7 a on which a graphic indicating that normal charging is recommended, or normal charging. Is provided with a monitor unit 7b or the like for displaying character information to recommend the user.

ここで普通充電推奨情報としては、電動車両１のユーザに普通充電が推奨されていることを認識させる文字、図形、記号若しくはこれらの組み合わせを採用することができる。また、普通充電推奨情報は、文字など視覚により認識されるものに限定されず、音声や警告音など聴覚により認識されるものであってもよい。   Here, as the normal charging recommendation information, a character, a figure, a symbol, or a combination thereof that allows the user of the electric vehicle 1 to recognize that normal charging is recommended can be adopted. Further, the normal charging recommendation information is not limited to information that is visually recognized, such as characters, but may be information that is recognized by hearing, such as voice and warning sounds.

本実施形態では、情報提示手段１４は、電圧差判定手段１３によって電圧差Ｖｄが所定閾値Ｖｔを超えていると判定されると、普通充電推奨情報として、まずは普通充電することを促すことを表した形状のインジケータランプ７ａを点灯させる。   In the present embodiment, when the voltage difference determining unit 13 determines that the voltage difference Vd exceeds the predetermined threshold Vt, the information presenting unit 14 first prompts normal charging as normal charging recommended information. The indicator lamp 7a having the shape is turned on.

このようにインジケータランプ７ａの点灯、つまり普通充電推奨情報の提示することで、それに応じて電動車両１のユーザが普通充電を実行すれば、その際にバランサ回路２２が作動されて電池セル２１間の電圧が均等化される。これにより、バッテリ２の電池容量を十分に使用でき、急速充電を実行した場合に比べて航続距離が伸ばすことができる。   In this way, when the user of the electric vehicle 1 performs normal charging by turning on the indicator lamp 7a, that is, presenting normal charging recommendation information, the balancer circuit 22 is activated at that time, and the battery cells 21 are connected. Are equalized. Thereby, the battery capacity of the battery 2 can be fully used, and the cruising distance can be extended compared with the case where quick charge is performed.

さらに本実施形態では、情報提示手段１４は、普通充電推奨情報として、普通充電を実行することによりユーザが得られる効果の情報を提示する。例えば、図４（ａ）に示すように、情報提示手段１４は、普通充電の推奨充電時間と、推奨充電時間で普通充電を行うことにより急速充電で満充電まで充電を行った場合に比べて延びる航続距離（第１のプラス航続距離）と、を文字情報としてモニタ部７ｂに表示する。なお推奨充電時間とは、バランサ回路２２の作動により電圧差（最大値）Ｖｄを解消するのに必要な時間であり、電圧差Ｖｄ、バランサ回路２２の抵抗２５の大きさ等に基づいて演算される。上記第１のプラス航続距離とは、言い換えれば、電圧差Ｖｄ分の走行可能距離であり、電圧差Ｖｄに基づいて適宜演算される。   Furthermore, in this embodiment, the information presentation means 14 presents information on the effect obtained by the user by executing normal charging as the normal charging recommendation information. For example, as shown in FIG. 4 (a), the information presenting means 14 is compared with the case where the normal charging is performed at the recommended charging time and the normal charging is performed at the recommended charging time, and the battery is charged up to the full charge by the rapid charging. The extended cruising distance (first plus cruising distance) is displayed on the monitor unit 7b as character information. The recommended charging time is a time required to eliminate the voltage difference (maximum value) Vd by the operation of the balancer circuit 22, and is calculated based on the voltage difference Vd, the size of the resistor 25 of the balancer circuit 22, and the like. The In other words, the first plus cruising distance is a travelable distance corresponding to the voltage difference Vd, and is appropriately calculated based on the voltage difference Vd.

また情報提示手段１４は、普通充電を実行することによりユーザが得られる効果の情報として、例えば、図４（ｂ）に示すように、普通充電で満充電までにかかる満充電時間と、この満充電時間で普通充電を行うことにより急速充電で満充電まで充電を行った場合に比べて延びる航続距離（第２のプラス航続距離）と、を文字情報としてモニタ部７ｂに表示するようにしてもよい。第２のプラス航続距離とは、言い換えれば、満充電時間だけバランサ回路２２を作動させることによる電圧差Ｖｄの減少分での走行可能距離であり、電圧差Ｖｄ、バランサ回路２２の抵抗２５の大きさ等に基づいて適宜演算される。   Further, the information presenting means 14 provides information on the effect obtained by the user by executing the normal charging, for example, as shown in FIG. By performing normal charging during the charging time, the cruising distance (second plus cruising distance) that is longer than when charging to full charge by rapid charging is displayed on the monitor unit 7b as character information. Good. In other words, the second plus cruising distance is a travelable distance when the voltage difference Vd is reduced by operating the balancer circuit 22 for the full charge time, and the voltage difference Vd and the resistance 25 of the balancer circuit 22 are large. An appropriate calculation is made based on the above.

このように本実施形態では、普通充電推奨情報として、普通充電を実行することによりユーザが得られる効果の情報を提示するようにしたので、ユーザに対して普通充電の実行をより効果的に促すことができる。   As described above, in the present embodiment, the information on the effect obtained by the user by executing the normal charging is presented as the normal charging recommendation information, and therefore the user is more effectively prompted to execute the normal charging. be able to.

なお本実施形態では、普通充電を実行することによりユーザが得られる効果の情報として、普通充電の時間や、それに伴い増加する航続距離の情報を表示するようにしたが、この情報は一例であり、これらに限定されるものでない。   In the present embodiment, as information on the effect obtained by the user by executing the normal charging, the information on the normal charging time and the cruising distance that increases with the normal charging are displayed. However, this information is an example. However, it is not limited to these.

以上、本発明の一実施形態について説明したが、勿論、本発明は、上述の実施形態に限定されるものではなく、本発明の趣旨から逸脱しない範囲内で、構成の付加、省略、置換、およびその他の変更が可能である。   As mentioned above, although one embodiment of the present invention has been described, of course, the present invention is not limited to the above-described embodiment, and addition, omission, replacement, etc., of a configuration is possible without departing from the spirit of the present invention. And other changes are possible.

例えば、上述の実施形態では、普通充電推奨情報を、車両が備えるインストゥルメントパネルの情報表示部に表示する構成を例示したが、例えば、無線通信可能な携帯電話機やスマートフォン等の携帯機器に表示するようにしてもよい。   For example, in the above-described embodiment, the configuration in which the normal charging recommendation information is displayed on the information display unit of the instrument panel included in the vehicle is exemplified. However, for example, the normal charging recommendation information is displayed on a mobile device such as a mobile phone or a smartphone capable of wireless communication. You may make it do.

また例えば、上述の実施形態では、電動車両として電気自動車を一例として本発明を説明したが、勿論、本発明は、駆動用モータと共にエンジン（内燃機関）を備えるハイブリッド自動車等にも適用可能なものである。   Further, for example, in the above-described embodiment, the present invention has been described by taking an electric vehicle as an example of an electric vehicle. However, the present invention can also be applied to a hybrid vehicle including an engine (internal combustion engine) together with a drive motor. It is.

１ 電動車両
２ バッテリ
３ 走行用モータ
４ 駆動機構
５ 駆動輪
７ 情報表示部
７ａ インジケータランプ
７ｂ モニタ部
８ インストゥルメントパネル
９ 充電口
１０ 制御装置
１１ 情報提示制御部
１２ 電圧差算出手段
１３ 電圧差判定手段
１４ 情報提示手段
２１ 電池セル
２２ バランサ回路
２３ セル電圧モニタ
２４ スイッチ
２５ 抵抗
DESCRIPTION OF SYMBOLS 1 Electric vehicle 2 Battery 3 Driving motor 4 Drive mechanism 5 Drive wheel 7 Information display part 7a Indicator lamp 7b Monitor part 8 Instrument panel 9 Charging port 10 Control apparatus 11 Information presentation control part 12 Voltage difference calculation means 13 Voltage difference determination Means 14 Information presentation means 21 Battery cell 22 Balancer circuit 23 Cell voltage monitor 24 Switch 25 Resistance

Claims (4)

普通充電又は急速充電により充電される複数の電池セルと、前記普通充電時に作動して前記電池セルの放電を行うバランサ回路と、を有するバッテリを備えた電動車両の制御装置であって、
各電池セルの電圧を検出すると共に、各電池セル間の電圧差の最大値を算出する電圧差算出手段と、
前記電圧差算出手段によって算出された前記電圧差の最大値が所定閾値を超えている場合に、前記普通充電の実行を促す普通充電推奨情報を提示する情報提示手段と、を備え、
前記普通充電推奨情報には、前記普通充電を実行することによりユーザが得られる効果の情報が含まれている
ことを特徴とする電動車両の制御装置。 A control device for an electric vehicle comprising a battery having a plurality of battery cells that are charged by normal charging or quick charging, and a balancer circuit that operates during the normal charging and discharges the battery cells,
It detects a voltage of each battery cell, and the voltage difference calculating means for calculating the maximum value of the voltage difference between the battery cells,
Information presenting means for presenting normal charging recommendation information that prompts execution of the normal charging when the maximum value of the voltage difference calculated by the voltage difference calculating means exceeds a predetermined threshold ;
The control device for an electric vehicle, wherein the normal charging recommendation information includes information on an effect obtained by a user by executing the normal charging . 請求項１に記載の電動車両の制御装置であって、
前記普通充電推奨情報には、前記普通充電の推奨充電時間と、該推奨充電時間で前記普通充電を行うことにより前記急速充電で満充電まで充電を行った場合に比べて延びる航続距離と、が含まれている
ことを特徴とする電動車両の制御装置。 The control device for an electric vehicle according to claim 1 ,
The normal charging recommendation information includes a recommended charging time for the normal charging, and a cruising distance that is longer than a case where the charging is performed to the full charge by the quick charging by performing the normal charging at the recommended charging time. A control device for an electric vehicle characterized by being included. 請求項１又は２に記載の電動車両の制御装置であって、
前記普通充電推奨情報には、前記普通充電で満充電までにかかる満充電時間と、該満充電時間で前記普通充電を行うことにより前記急速充電で満充電まで充電を行った場合に比べて延びる航続距離と、が含まれている
ことを特徴とする電動車両の制御装置。 The control device for an electric vehicle according to claim 1 or 2 ,
The normal charge recommendation information extends compared to a full charge time required for the normal charge until the full charge and a case where the normal charge is performed for the full charge time to perform the quick charge to the full charge. A control apparatus for an electric vehicle characterized in that the cruising distance is included. 請求項１から３の何れか一項に記載の電動車両の制御装置であって、
前記情報提示手段は、前記電動車両が備える情報表示部に、前記普通充電推奨情報を表示させる
ことを特徴とする電動車両の制御装置。 An electric vehicle control device according to any one of claims 1 to 3 ,
The said information presentation means displays the said normal charging recommendation information on the information display part with which the said electric vehicle is provided, The control apparatus of the electric vehicle characterized by the above-mentioned.
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