JP2018126003A - Vehicle charging controller - Google Patents

Vehicle charging controller Download PDF

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JP2018126003A
JP2018126003A JP2017017637A JP2017017637A JP2018126003A JP 2018126003 A JP2018126003 A JP 2018126003A JP 2017017637 A JP2017017637 A JP 2017017637A JP 2017017637 A JP2017017637 A JP 2017017637A JP 2018126003 A JP2018126003 A JP 2018126003A
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power
charging
vehicle
external charging
power supply
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JP6825395B2 (en
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橋本　俊哉
Toshiya Hashimoto
俊哉 橋本
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To accurately estimate a time necessary for non-contact external charging.SOLUTION: A vehicle charging system includes a vehicle and power supply equipment outside the vehicle. The vehicle includes: a power storage device; a power reception coil capable of receiving power for charging the power storage device without contact from a power transmission coil of the power supply equipment; a communication device configured to be able to communicate with the power supply equipment; and an ECU for controlling execution of non-contact external charging to charge the power storage device with power received by the power reception coil without contact from the power transmission coil of the power supply equipment. If executable conditions of non-contact external charging are established, the ECU transmits a preparatory power transmission request to the power supply equipment, measures power actually received by the power reception coil from the power transmission coil of the power supply equipment after the transmission of the preparatory power transmission request, and calculates a time necessary for non-contact external charging by using the measured power.SELECTED DRAWING: Figure 3

Description

本開示は、車載の蓄電装置を車外の電源により充電する外部充電の制御に関する。   The present disclosure relates to control of external charging in which an in-vehicle power storage device is charged by a power source outside the vehicle.

特開２０１２−２５２１１号公報（特許文献１）には、車両外部の給電設備からの電力を充電ケーブルを介して車両に供給する接触方式で外部充電を行なう充電システムが開示されている。この充電システムにおいては、給電設備と車両とが充電ケーブルによって接続されると、給電設備の種類（送電可能電力の低い通常充電設備であるのか、送電可能電力の高い急速充電設備であるのか）を判別し、その判別結果に応じて外部充電時間（外部充電に要する時間）を推定している。   Japanese Patent Laying-Open No. 2012-25211 (Patent Document 1) discloses a charging system that performs external charging by a contact method in which power from a power supply facility outside the vehicle is supplied to the vehicle via a charging cable. In this charging system, when the power supply facility and the vehicle are connected by a charging cable, the type of power supply facility (whether it is a normal charging facility with low transmittable power or a quick charge facility with high transmittable power) is selected. The external charging time (time required for external charging) is estimated according to the determination result.

特開２０１２−２５２１１号公報JP 2012-25211 A 特開２０１３−１５４８１５号公報JP2013-154815A 特開２０１３−１４６１５４号公報JP2013-146154A 特開２０１３−１４６１４８号公報JP2013-146148A 特開２０１３−１１０８２２号公報JP 2013-110822 A 特開２０１３−１２６３２７号公報JP 2013-126327 A

しかしながら、給電設備からの電力を非接触で車両に供給する非接触方式で外部充電を行なう場合には、給電設備の送電部と車両の受電部との位置関係によって受電効率が大きく変化するため、たとえ給電設備の種類が同じであっても外部充電電力は大きく変化し得る。したがって、接触方式と同様の手法で外部充電時間を推定すると、推定された外部充電時間と実際の外部充電時間との差が大きくなってしまう可能性がある。   However, when external charging is performed in a non-contact manner in which power from the power supply facility is supplied to the vehicle in a non-contact manner, the power reception efficiency varies greatly depending on the positional relationship between the power transmission unit of the power supply facility and the power reception unit of the vehicle. Even if the type of power supply equipment is the same, the external charging power can vary greatly. Therefore, if the external charging time is estimated by the same method as the contact method, there is a possibility that the difference between the estimated external charging time and the actual external charging time becomes large.

本開示は、上述の課題を解決するためになされたものであって、その目的は、非接触外部充電に要する時間を精度よく推定することである。   This indication is made in order to solve the above-mentioned subject, and the object is to estimate the time which non-contact external charge requires accurately.

本開示による充電制御装置は、蓄電装置と、蓄電装置を充電するための電力を車両外部の給電設備の送電部から非接触で受電可能な受電部とを備える車両の充電制御装置である。この充電制御装置は、給電設備と通信可能に構成された通信装置と、給電設備の送電部から非接触で受電部が受電した電力で蓄電装置を充電する非接触外部充電の実行を制御する制御装置とを備える。制御装置は、非接触外部充電の実行可能条件が成立した場合に、給電設備に対して受電部への送電要求を送信し、送電要求の送信後に給電設備の送電部から受電部が実際に受けた電力を測定し、測定された電力を用いて非接触外部充電に要する時間を算出する。   A charge control device according to the present disclosure is a vehicle charge control device including a power storage device and a power receiving unit that can receive power for charging the power storage device in a non-contact manner from a power transmission unit of a power supply facility outside the vehicle. This charging control device is a communication device configured to be communicable with a power feeding facility, and a control for controlling the execution of non-contact external charging that charges the power storage device with power received by the power receiving unit in a non-contact manner from the power transmission unit of the power feeding facility. Device. The control device transmits a power transmission request to the power receiving unit to the power supply facility when the non-contact external charging executable condition is satisfied, and the power receiving unit actually receives the power transmission unit from the power transmission unit of the power supply facility after transmitting the power transmission request. The measured power is measured, and the time required for non-contact external charging is calculated using the measured power.

上記構成によれば、非接触外部充電の実行可能条件（たとえば非接触外部充電を開始可能な範囲内に車両が駐車しているという条件など）が成立した後に、給電設備の送電部から受電部が実際に受けた電力（すなわち受電効率に大きく影響する送電部と受電部との実際の位置関係によって決まる受電電力）が測定され、測定された結果を用いて外部充電時間が算出される。そのため、非接触外部充電に要する時間を精度よく推定することができる。   According to the above configuration, after a condition for enabling non-contact external charging (for example, a condition that the vehicle is parked within a range where non-contact external charging can be started) is established, the power receiving unit receives power from the power transmission unit of the power supply facility. Is actually measured (that is, the received power determined by the actual positional relationship between the power transmitting unit and the power receiving unit that greatly affects the power receiving efficiency), and the external charging time is calculated using the measured result. Therefore, it is possible to accurately estimate the time required for non-contact external charging.

車両充電システムの一例を示した図である。It is the figure which showed an example of the vehicle charging system. 車両の構成の一例を概略的に示したブロック図である。1 is a block diagram schematically showing an example of a configuration of a vehicle. ＥＣＵの処理手順の一例を示すフローチャートである。It is a flowchart which shows an example of the process sequence of ECU.

以下、本開示の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一又は相当部分には同一符号を付してその説明は繰り返さない。   Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals and description thereof will not be repeated.

＜全体構成＞
図１は、本実施の形態による充電制御装置が適用される車両充電システム１の一例を示した図である。車両充電システム１は、車両１０と、給電設備２０とを備える。 <Overall configuration>
FIG. 1 is a diagram showing an example of a vehicle charging system 1 to which a charging control device according to the present embodiment is applied. The vehicle charging system 1 includes a vehicle 10 and a power supply facility 20.

車両１０は、車載の蓄電装置に蓄えられた電力を用いて走行可能な車両（ハイブリッド自動車、電気自動車など）である。車両１０は、車載の蓄電装置の外部充電を行なうための電力を車両外部の給電設備２０から非接触で受電可能に構成される。具体的には、車両１０は、給電設備２０の送電コイル（送電部）２１０から磁界を通じて非接触で受電する受電コイル（受電部）１１０を備える。   The vehicle 10 is a vehicle (a hybrid vehicle, an electric vehicle, or the like) that can travel using electric power stored in an in-vehicle power storage device. Vehicle 10 is configured to be able to receive electric power for external charging of an on-vehicle power storage device from power supply facility 20 outside the vehicle in a non-contact manner. Specifically, the vehicle 10 includes a power reception coil (power reception unit) 110 that receives power from a power transmission coil (power transmission unit) 210 of the power supply facility 20 in a contactless manner through a magnetic field.

なお、非接触で送受電する技術としては、電磁誘導を用いた送受電、マイクロ波を用いた送受電、および共鳴法による送受電などが広く知られている。共鳴法による送受電においては、一次側（送電側）コイルおよび二次側（受電側）コイルを電磁場において共鳴させ、電磁場を介して電力が送受電される。共鳴法による送受電を行なう場合、給電設備２０の送電コイル２１０の共振強度を示すＱ値、および車両１０の受電コイル１１０の共振強度を示すＱ値は、それぞれ１００以上であることが好ましい。   Note that as a technique for transmitting and receiving power without contact, power transmission and reception using electromagnetic induction, power transmission and reception using microwaves, power transmission and reception using a resonance method, and the like are widely known. In power transmission / reception by the resonance method, a primary side (power transmission side) coil and a secondary side (power reception side) coil are resonated in an electromagnetic field, and power is transmitted and received via the electromagnetic field. When performing power transmission / reception by the resonance method, the Q value indicating the resonance strength of the power transmission coil 210 of the power supply facility 20 and the Q value indicating the resonance strength of the power reception coil 110 of the vehicle 10 are each preferably 100 or more.

車両１０は、時刻スケジュールに従って外部充電を開始するタイマー充電を実行可能に構成される。本実施の形態では、ユーザによって入力された充電開始要求時刻あるいは車両１０の出発予定時刻に基づいてタイマー充電の時刻スケジュールが決定される。タイマー充電については、後ほど詳しく説明する。   The vehicle 10 is configured to be able to perform timer charging that starts external charging according to a time schedule. In the present embodiment, the time schedule for timer charging is determined based on the charging start request time input by the user or the scheduled departure time of the vehicle 10. The timer charging will be described in detail later.

給電設備２０は、車両１０に搭載された蓄電装置を充電するための電力を送電コイル２１０から非接触で車両１０へ供給可能に構成される。給電設備２０は、たとえば自宅の駐車場に設けられるものとするが、自宅以外の駐車設備に設けられてもよい。給電設備２０は、車両１０からの要求に従って車両１０へ充電電力を供給する。   The power supply facility 20 is configured to be able to supply electric power for charging a power storage device mounted on the vehicle 10 from the power transmission coil 210 to the vehicle 10 in a non-contact manner. The power supply facility 20 is provided in a parking lot at home, for example, but may be provided in a parking facility other than the home. The power supply facility 20 supplies charging power to the vehicle 10 in accordance with a request from the vehicle 10.

図２は、図１に示した車両１０の構成の一例を概略的に示したブロック図である。車両１０は、受電コイル１１０と、充電器１２０と、蓄電装置１３０と、駆動装置１４０と、ＥＣＵ（Electric Control Unit）１５０と、ＭＩＤ（Multi Information Display）１６０と、ＤＣＭ（Data Communication Module）１８０と、位置検出システム（Fine Position System）１９０と、非接触充電スイッチ１７０とを備える。   FIG. 2 is a block diagram schematically showing an example of the configuration of the vehicle 10 shown in FIG. The vehicle 10 includes a power receiving coil 110, a charger 120, a power storage device 130, a driving device 140, an ECU (Electric Control Unit) 150, a MID (Multi Information Display) 160, and a DCM (Data Communication Module) 180. A position detection system (Fine Position System) 190 and a non-contact charging switch 170 are provided.

受電コイル１１０は、給電設備２０の送電コイル２１０から磁界を通じて非接触で受電する。   The power reception coil 110 receives power from the power transmission coil 210 of the power supply facility 20 in a non-contact manner through a magnetic field.

充電器１２０は、ＥＣＵ１５０によって制御され、受電コイル１１０によって受電された電力を蓄電装置１３０に充電可能な電力に変換して蓄電装置１３０へ出力する。充電器１２０は、たとえば整流器やインバータ等を含んで構成される。   Charger 120 is controlled by ECU 150, converts the power received by power receiving coil 110 into power that can be charged in power storage device 130, and outputs the power to power storage device 130. The charger 120 includes, for example, a rectifier and an inverter.

蓄電装置１３０は、充電器１２０から受ける電力を蓄えるとともに、蓄えられた電力を駆動装置１４０へ供給することができる。蓄電装置１３０は、たとえば、ニッケル水素電池やリチウムイオン電池等の二次電池や、電気二重層キャパシタ等を含んで構成される。蓄電装置１３０は、駆動装置１４０において発電される電力も蓄えることができる。   Power storage device 130 can store the power received from charger 120 and supply the stored power to drive device 140. The power storage device 130 includes, for example, a secondary battery such as a nickel metal hydride battery or a lithium ion battery, an electric double layer capacitor, and the like. The power storage device 130 can also store electric power generated by the driving device 140.

駆動装置１４０は、駆動輪（図示せず）を駆動して車両１０が走行するための駆動力を発生する。特に図示しないが、駆動装置１４０は、蓄電装置１３０から電力の供給を受けるコンバータやインバータ、インバータにより駆動されて駆動輪を駆動するモータを含む。なお、駆動装置１４０は、蓄電装置１３０を充電するための電力を発生するジェネレータと、そのジェネレータを駆動可能なエンジンとを含んでもよい。   The driving device 140 generates driving force for driving the vehicle 10 by driving driving wheels (not shown). Although not particularly illustrated, drive device 140 includes a converter and an inverter that receive power supply from power storage device 130, and a motor that is driven by the inverter to drive the drive wheels. Drive device 140 may include a generator that generates electric power for charging power storage device 130 and an engine capable of driving the generator.

ＭＩＤ１６０は、車両１０における種々の情報を表示するとともにユーザが操作入力可能な表示装置であり、たとえば、タッチ入力可能な液晶ディスプレイや有機ＥＬ（Electro Luminescence）ディスプレイ等を含んで構成される。この車両１０では、時刻スケジュールに従って外部充電が開始されるタイマー充電を実行可能である。ユーザは、ＭＩＤ１６０を操作することによって、タイマー充電の設定を行なうことができる。この実施の形態では、ユーザは、タイマー充電の設定を行なう際、ＭＩＤ１６０に対して、外部充電の開始要求時刻および車両１０の出発予定時刻を入力することが可能である。   The MID 160 is a display device that displays various information in the vehicle 10 and allows a user to input an operation. The MID 160 includes, for example, a liquid crystal display capable of touch input, an organic EL (Electro Luminescence) display, and the like. The vehicle 10 can execute timer charging in which external charging is started according to the time schedule. The user can set timer charging by operating the MID 160. In this embodiment, the user can input the external charging start request time and the scheduled departure time of the vehicle 10 to the MID 160 when setting the timer charging.

ＤＣＭ１８０は、ＥＣＵ１５０からの制御信号に従って、給電設備２０などの車両外部の機器と無線通信を行なう通信装置である。   DCM 180 is a communication device that performs wireless communication with devices outside the vehicle such as power supply facility 20 in accordance with a control signal from ECU 150.

位置検出システム（位置検出装置）１９０は、給電設備２０の送電コイル２１０と車両１０の受電コイル１１０との位置関係（送電コイル２１０からの電力を最も効率よく受電可能な基準位置からの受電コイル１１０の前後、左右、上下の位置ずれ量など）を、給電設備２０に対する車両１０の相対的な駐車位置として検出する。位置検出システム１９０による駐車位置の具体的な検出手法については、たとえばカメラによる撮影画像を解析する手法など、公知の検出手法を採用することができる。なお、撮影画像を解析する場合の画像情報は、車両１０に搭載されたカメラから取得するようにしてもよいし、給電設備２０に搭載されたカメラによる撮影画像情報を給電設備２０側から取得するようにしてもよい。位置検出システム１９０は、検出結果をＥＣＵ１５０に出力する。   The position detection system (position detection device) 190 includes a positional relationship between the power transmission coil 210 of the power supply facility 20 and the power reception coil 110 of the vehicle 10 (the power reception coil 110 from a reference position where power from the power transmission coil 210 can be received most efficiently). Are detected as a relative parking position of the vehicle 10 with respect to the power supply facility 20. As a specific detection method of the parking position by the position detection system 190, a known detection method such as a method of analyzing a photographed image by a camera can be employed. Note that image information for analyzing a captured image may be acquired from a camera mounted on the vehicle 10, or captured image information obtained by a camera mounted on the power supply facility 20 is acquired from the power supply facility 20 side. You may do it. The position detection system 190 outputs the detection result to the ECU 150.

非接触充電スイッチ１７０は、ユーザが非接触外部充電を要求する場合にオン状態に操作されるスイッチである。   The non-contact charging switch 170 is a switch that is turned on when the user requests non-contact external charging.

ＥＣＵ１５０は、ＣＰＵ（Central Processing Unit）、メモリ、入出力バッファ等を含み（いずれも図示せず）、車両１０における各種制御を行なう。   ECU 150 includes a CPU (Central Processing Unit), a memory, an input / output buffer, and the like (all not shown), and performs various controls in vehicle 10.

＜タイマー充電＞
ＥＣＵ１５０は、ユーザがＭＩＤ１６０を操作することによってタイマー充電が要求されると、タイマー充電の時刻スケジュール（以下「充電スケジュール」ともいう）を決定し、決定された充電スケジュールに従って外部充電を実行する「タイマー充電」を行なう。 <Timer charging>
When timer charging is requested by the user operating MID 160, ECU 150 determines a timer charging time schedule (hereinafter also referred to as “charging schedule”), and executes external charging according to the determined charging schedule. “Charge”.

たとえば、ＥＣＵ１５０は、ユーザがタイマー充電の設定を行なうと、蓄電装置１３０のＳＯＣ（State Of Charge）と外部充電電力の推定値とを用いて、外部充電時間を算出する。なお、外部充電電力とは、外部充電によって蓄電装置１３０に入力される電力（単位：ワット）である。外部充電時間とは、外部充電によって蓄電装置１３０のＳＯＣを目標ＳＯＣにするのに要する時間である。   For example, when the user sets timer charging, ECU 150 calculates an external charging time using an SOC (State Of Charge) of power storage device 130 and an estimated value of external charging power. Note that the external charging power is power (unit: watts) input to the power storage device 130 by external charging. The external charging time is the time required for the SOC of power storage device 130 to be the target SOC by external charging.

そして、ユーザがタイマー充電の設定を行なう際に充電開始要求時刻を入力した場合には、ＥＣＵ１５０は、入力された充電開始要求時刻を充電開始目標時刻に設定するとともに、充電開始目標時刻から外部充電時間だけ後の時刻を充電完了目標時刻に設定する。また、ユーザがタイマー充電の設定を行なう際に車両１０の出発予定時刻が入力された場合には、入力された出発予定時刻よりも少し前の時刻を充電完了目標時刻に設定するとともに、充電完了目標時刻よりも外部充電時間だけ前の時刻を充電開始目標時刻に設定する。   When the user inputs the charge start request time when setting the timer charge, ECU 150 sets the input charge start request time as the charge start target time and performs external charging from the charge start target time. The time after the time is set as the charging completion target time. In addition, when the scheduled departure time of the vehicle 10 is input when the user sets the timer charging, the charging completion target time is set to a time slightly before the input scheduled departure time, and the charging is completed. The time before the target time by the external charging time is set as the charging start target time.

ＥＣＵ１５０は、充電開始目標時刻に外部充電が開始され、かつ充電完了目標時刻に外部充電が完了するように、充電器１２０を制御する。   ECU 150 controls charger 120 such that external charging is started at the charging start target time and external charging is completed at the charging completion target time.

＜外部充電時間の算出（推定）＞
上述のタイマー充電において、目標通りに（出発予定時刻よりも少し前に）外部充電を完了させるためには、外部充電時間の算出に用いられる外部充電電力（外部充電可能電力）を精度よく推定することが望まれる。 <Calculation (estimation) of external charging time>
In the above-described timer charging, in order to complete external charging as planned (slightly before the scheduled departure time), the external charging power (external charging power) used for calculating the external charging time is accurately estimated. It is desirable.

仮に、車両外部の給電設備からの電力を充電ケーブルを介して車両に供給する接触方式で外部充電を行なう場合には、給電設備の種類（送電可能電力の低い通常充電設備であるのか、送電可能電力の高い急速充電設備であるのか）および充電ケーブルの電圧値および許容電流値の情報を用いて、外部充電電力を推定することが可能である。   If external charging is performed using a contact method in which power from a power supply facility outside the vehicle is supplied to the vehicle via a charging cable, the type of power supply facility (whether it is a normal charging facility with low transmittable power or can transmit power) It is possible to estimate the external charging power by using the information on the voltage value and the allowable current value of the charging cable).

しかしながら、本実施の形態のように、給電設備２０からの電力を非接触で車両１０に供給する非接触方式での外部充電を行なう場合には、車両１０と給電設備２０とを物理的に接続する充電ケーブルは存在しない。さらに、非接触方式においては、給電設備２０の送電コイル２１０と車両１０の受電コイル１１０との位置関係によって送電コイル２１０と受電コイル１１０との相互インダクタンスが変化して受電効率が大きく変化するため、たとえ給電設備２０の種類が同じであっても送電コイル２１０と受電コイル１１０との位置関係によって外部充電電力は大きく変化し得る。したがって、非接触方式での外部充電時間を接触方式と同様の手法で推定すると、推定された外部充電時間と実際の外部充電時間との差が大きくなってしまう可能性がある。   However, when external charging is performed in a non-contact manner in which power from the power supply facility 20 is supplied to the vehicle 10 in a non-contact manner as in the present embodiment, the vehicle 10 and the power supply facility 20 are physically connected. There is no charging cable to do. Furthermore, in the non-contact method, because the mutual inductance between the power transmission coil 210 and the power reception coil 110 changes depending on the positional relationship between the power transmission coil 210 of the power supply facility 20 and the power reception coil 110 of the vehicle 10, the power reception efficiency changes greatly. Even if the type of the power supply facility 20 is the same, the external charging power can vary greatly depending on the positional relationship between the power transmission coil 210 and the power reception coil 110. Therefore, if the external charging time in the non-contact method is estimated by the same method as that in the contact method, there is a possibility that the difference between the estimated external charging time and the actual external charging time becomes large.

上記の点に鑑み、本実施の形態によるＥＣＵ１５０は、タイマー充電が設定されている場合、非接触外部充電の実行可能条件（後述）が成立した後に、給電設備２０に対してプレ送電要求を送信し、プレ送電要求の送信後に給電設備２０の送電コイル２１０から受電コイル１１０が実際に受けた電力を測定し、測定された電力を用いて外部充電時間を算出する。   In view of the above points, when timer charging is set, ECU 150 according to the present embodiment transmits a pre-power transmission request to power supply facility 20 after a non-contact external charging executable condition (described later) is satisfied. Then, the power actually received by the power receiving coil 110 from the power transmission coil 210 of the power supply facility 20 after the transmission of the pre-power transmission request is measured, and the external charging time is calculated using the measured power.

なお、上述のプレ送電要求は、受電電力を測定するために、給電設備２０に対して試験的な送電を要求するものである。そのため、プレ送電要求が送信されるタイミングは、タイマー充電による外部充電が開始される前（タイマー充電による充電開始目標時刻に達する前）である。また、プレ送電要求による送電電力値は、タイマー充電を実際に行なう際の送電電力値と同じ値であってもよいし、タイマー充電を実際に行なう際の送電電力値よりも小さい値であってもよい。   Note that the pre-transmission request described above is a request for experimental power transmission to the power supply facility 20 in order to measure the received power. Therefore, the timing at which the pre-power transmission request is transmitted is before external charging by timer charging is started (before the target charging start time by timer charging is reached). Further, the transmission power value based on the pre-transmission request may be the same value as the transmission power value when the timer charging is actually performed, or a value smaller than the transmission power value when the timer charging is actually performed. Also good.

図３は、ＥＣＵ１５０が上述のプレ送電要求を送信して外部充電時間を算出する際に実行する処理手順の一例を示すフローチャートである。このフローチャートは、所定周期で繰り返し実行される。   FIG. 3 is a flowchart illustrating an example of a processing procedure executed when the ECU 150 transmits the above-described pre-power transmission request and calculates the external charging time. This flowchart is repeatedly executed at a predetermined cycle.

ステップ(以下、ステップを「Ｓ」と略す)１０にて、ＥＣＵ１５０は、ユーザによってタイマー充電の設定がなされているか否かを判定する。タイマー充電の設定がなされていない場合（Ｓ１０にてＮＯ）、ＥＣＵ１５０は、以降の処理をスキップしてリターンへと処理を移す。   In step (hereinafter, step is abbreviated as “S”) 10, ECU 150 determines whether or not timer charging is set by the user. If timer charging is not set (NO in S10), ECU 150 skips the subsequent processing and proceeds to return.

タイマー充電の設定がなされている場合（Ｓ１０にてＹＥＳ）、ＥＣＵ１５０は、非接触外部充電の実行可能条件が成立しているか否かを判定する（Ｓ１２）。たとえば、ＥＣＵ１５０は、下記の４つの条件１〜条件４がすべて成立している場合に非接触外部充電の実行可能条件が成立していると判定する。   If timer charging has been set (YES in S10), ECU 150 determines whether or not an executable condition for non-contact external charging is satisfied (S12). For example, ECU 150 determines that the non-contact external charging executable condition is satisfied when the following four conditions 1 to 4 are all satisfied.

（条件１） ＤＣＭ１８０による給電設備２０との無線通信が確立している。
（条件２） 位置検出システム１９０から取得される車両１０の駐車位置が、非接触外部充電を開始可能な所定範囲内である。 (Condition 1) Wireless communication with the power supply facility 20 using the DCM 180 is established.
(Condition 2) The parking position of the vehicle 10 acquired from the position detection system 190 is within a predetermined range in which non-contact external charging can be started.

（条件３） 車両１０と給電設備２０とのペアリング（車両１０と給電設備２０を一意的に特定する処理）が完了している。   (Condition 3) Pairing (processing for uniquely identifying the vehicle 10 and the power supply facility 20) between the vehicle 10 and the power supply facility 20 has been completed.

（条件４） 非接触充電スイッチ１７０がオン状態である。
なお、上記の条件１〜条件４は、あくまで例示であって、非接触外部充電の実行可能条件は上記の条件１〜条件４に限定されるものではない。たとえば、非接触外部充電の実行可能条件から上記の条件４を除いてもよい。 (Condition 4) The non-contact charge switch 170 is in an on state.
In addition, said conditions 1-condition 4 are an illustration to the last, Comprising: The conditions which can perform non-contact external charge are not limited to said conditions 1-condition 4. For example, the above condition 4 may be excluded from the feasible conditions for non-contact external charging.

非接触外部充電の実行可能条件が成立している場合（Ｓ１２にてＹＥＳ）、ＥＣＵ１５０は、非接触外部充電による外部充電可能電力が既に算出されてメモリに記憶されているか否かを判定する（Ｓ１４）。   When the non-contact external charging executable condition is satisfied (YES in S12), ECU 150 determines whether or not external chargeable power by non-contact external charging has already been calculated and stored in the memory ( S14).

外部充電可能電力が未だ算出されていない場合（Ｓ１４にてＮＯ）、ＥＣＵ１５０は、給電設備２０に対して上述のプレ送電要求を送信する（Ｓ１６）。給電設備２０は、車両１０からのプレ送電要求を受信したことに応じて送電コイル２１０からの送電を行なう。なお、この際の送電電力値は、上述したように、タイマー充電を実際に行なう際の送電電力値と同じ値であってもよいし、タイマー充電を実際に行なう際の送電電力値よりも小さい値であってもよい。   If the externally chargeable power has not yet been calculated (NO in S14), ECU 150 transmits the above pre-transmission request to power supply facility 20 (S16). The power supply facility 20 performs power transmission from the power transmission coil 210 in response to receiving the pre-power transmission request from the vehicle 10. Note that, as described above, the transmission power value at this time may be the same value as the transmission power value when timer charging is actually performed, or is smaller than the transmission power value when timer charging is actually performed. It may be a value.

次いで、ＥＣＵ１５０は、プレ送電要求の送信後に給電設備２０の送電コイル２１０から受電コイル１１０が実際に受けた電力を測定する（Ｓ１８）。そして、ＥＣＵ１５０は、Ｓ１８において測定された受電電力を用いて、非接触外部充電による外部充電可能電力を算出する（Ｓ２０）。なお、プレ送電要求に応じて実際のタイマー充電と同じ外部充電が行なわれる場合には、Ｓ１８において測定された受電電力をそのまま外部充電可能電力としてもよい。Ｓ２０において算出された外部充電可能電力は、ＥＣＵ１５０のメモリに記憶される。   Next, the ECU 150 measures the power actually received by the power receiving coil 110 from the power transmitting coil 210 of the power supply facility 20 after the transmission of the pre-power transmission request (S18). Then, ECU 150 uses the received power measured in S18 to calculate externally chargeable power by non-contact external charging (S20). When external charging that is the same as actual timer charging is performed in response to the pre-transmission request, the received power measured in S18 may be directly used as externally chargeable power. The externally chargeable power calculated in S20 is stored in the memory of ECU 150.

次いで、ＥＣＵ１５０は、Ｓ２０における算出結果（外部充電可能電力）を用いて、非接触による外部充電時間を算出する（Ｓ２２）。具体的には、ＥＣＵ１５０は、Ｓ２０において算出された外部充電可能電力と、蓄電装置１３０のＳＯＣとを用いて、外部充電時間を算出する。なお、ＳＯＣは、一般的に、満充電容量に対する実蓄電量の比で表される。ＳＯＣの算出方法としては、蓄電装置１３０の電圧とＳＯＣとの関係を用いて算出する方法や、蓄電装置の電流積算値を用いて算出する方法等、種々の公知の手法を用いることができる。   Next, the ECU 150 calculates the non-contact external charging time using the calculation result (externally chargeable power) in S20 (S22). Specifically, ECU 150 calculates the external charging time using the externally chargeable power calculated in S20 and the SOC of power storage device 130. Note that the SOC is generally represented by the ratio of the actual charged amount to the full charge capacity. As a method of calculating the SOC, various known methods such as a method of calculating using the relationship between the voltage of the power storage device 130 and the SOC and a method of calculating using the accumulated current value of the power storage device can be used.

次いで、ＥＣＵ１５０は、Ｓ２２において算出された外部充電時間を用いて、充電スケジュール（充電開始目標時刻、充電完了目標時刻など）を決定する（Ｓ２４）。その後、ＥＣＵ１５０は、Ｓ２４において設定された充電スケジュールに従ってタイマー充電を実行する（Ｓ２６）。   Next, ECU 150 determines a charging schedule (charging start target time, charging completion target time, etc.) using the external charging time calculated in S22 (S24). Thereafter, ECU 150 performs timer charging according to the charging schedule set in S24 (S26).

一方、非接触外部充電の実行可能条件が成立していない場合（Ｓ１２にてＮＯ）、ＥＣＵ１５０は、車両１０の移動があったか否かを判定する（Ｓ３０）。車両１０の移動がない場合（Ｓ３０にてＮＯ）、ＥＣＵ１５０は処理をリターンへと移行する。   On the other hand, if the feasible condition for non-contact external charging is not satisfied (NO in S12), ECU 150 determines whether or not vehicle 10 has moved (S30). If vehicle 10 has not moved (NO in S30), ECU 150 shifts the process to return.

車両１０の移動があった場合（Ｓ３０にてＹＥＳ）、ＥＣＵ１５０は、非接触外部充電による外部充電可能電力が既に算出されてメモリに記憶されているか否かを判定する（Ｓ３２）。外部充電可能電力が未だ算出されていない場合（Ｓ３２にてＮＯ）、ＥＣＵ１５０は処理をリターンへと移行する。   If vehicle 10 has moved (YES in S30), ECU 150 determines whether or not the externally chargeable power by non-contact external charging has already been calculated and stored in the memory (S32). If the externally chargeable power has not yet been calculated (NO in S32), ECU 150 shifts the process to return.

外部充電可能電力が既に算出されている場合（Ｓ３２にてＹＥＳ）、ＥＣＵ１５０は、メモリに既に記憶されている外部充電可能電力をメモリから消去する（Ｓ３４）。   If the external chargeable power has already been calculated (YES in S32), ECU 150 deletes the external chargeable power already stored in the memory from the memory (S34).

以上のように、本実施の形態によるＥＣＵ１５０は、非接触外部充電の実行可能条件が成立した後に、給電設備２０に対してプレ送電要求を送信し、プレ送電要求の送信後に給電設備２０から受電コイル１１０が実際に受けた受電電力（すなわち受電効率に大きく影響する送電コイル２１０と受電コイル１１０との実際の位置関係によって決まる受電電力）を測定し、測定された受電電力を用いて外部充電時間を算出する。これにより、送電コイル２１０と受電コイル１１０との実際の位置関係に基づいて外部充電時間を精度よく推定することができる。   As described above, ECU 150 according to the present embodiment transmits a pre-transmission request to power supply facility 20 after the non-contact external charging executable condition is satisfied, and receives power from power supply facility 20 after transmitting the pre-transmission request. The received power actually received by the coil 110 (that is, the received power determined by the actual positional relationship between the power receiving coil 210 and the power receiving coil 110 that greatly affects the power receiving efficiency) is measured, and the external charging time is measured using the measured received power. Is calculated. Thereby, the external charging time can be accurately estimated based on the actual positional relationship between the power transmission coil 210 and the power reception coil 110.

そして、ＥＣＵ１５０は、精度よく推定された外部充電時間を用いて充電スケジュールを決定し、決定された充電スケジュールに従ってタイマー充電を実行する。そのため、タイマー充電において、充電完了目標時刻に外部充電を適切に完了させることができる。   Then, ECU 150 determines a charging schedule using the external charging time estimated with high accuracy, and executes timer charging according to the determined charging schedule. Therefore, in the timer charging, the external charging can be appropriately completed at the charging completion target time.

なお、上述の実施の形態においては、タイマー充電が設定されている際に外部充電時間を算出する場合について例示したが、本開示による外部充電時間の算出手法はタイマー充電が設定されている際に用いることに限定されない。たとえば、ユーザが手動で外部充電を行なう前に、本開示による算出手法を用いて外部充電時間を算出し、算出された外部充電時間をＭＩＤ１６０に表示してユーザに報知するようにしてもよい。   In the above-described embodiment, the case where the external charging time is calculated when the timer charging is set is illustrated, but the external charging time calculation method according to the present disclosure is the case when the timer charging is set. It is not limited to use. For example, before the user manually performs external charging, the external charging time may be calculated using the calculation method according to the present disclosure, and the calculated external charging time may be displayed on the MID 160 to notify the user.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present disclosure is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

１ 車両充電システム、１０ 車両、２０ 給電設備、１１０ 受電コイル、１２０ 充電器、１３０ 蓄電装置、１４０ 駆動装置、１５０ ＥＣＵ、１７０ 非接触充電スイッチ、１９０ 位置検出システム、２１０ 送電コイル。   DESCRIPTION OF SYMBOLS 1 Vehicle charging system, 10 Vehicle, 20 Power supply equipment, 110 Power receiving coil, 120 Charger, 130 Power storage device, 140 Drive device, 150 ECU, 170 Non-contact charge switch, 190 Position detection system, 210 Power transmission coil

Claims (1)

蓄電装置と、前記蓄電装置を充電するための電力を車両外部の給電設備の送電部から非接触で受電可能な受電部とを備える車両の充電制御装置であって、
前記給電設備と通信可能に構成された通信装置と、
前記給電設備の送電部から非接触で前記受電部が受電した電力で前記蓄電装置を充電する非接触外部充電の実行を制御する制御装置とを備え、
前記制御装置は、前記非接触外部充電の実行可能条件が成立した場合に、前記給電設備に対して前記受電部への送電要求を送信し、前記送電要求の送信後に前記給電設備の送電部から前記受電部が実際に受けた電力を測定し、測定された前記電力を用いて前記非接触外部充電に要する時間を算出する、車両の充電制御装置。 A vehicle charge control device comprising: a power storage device; and a power receiving unit capable of receiving power for charging the power storage device in a non-contact manner from a power transmission unit of a power supply facility outside the vehicle,
A communication device configured to be able to communicate with the power supply facility;
A control device that controls execution of non-contact external charging that charges the power storage device with power received by the power receiving unit in a non-contact manner from a power transmission unit of the power supply facility;
The control device transmits a power transmission request to the power receiving unit to the power supply facility when the non-contact external charging executable condition is satisfied, and from the power transmission unit of the power supply facility after transmitting the power transmission request A vehicle charge control device that measures electric power actually received by the power receiving unit and calculates a time required for the non-contact external charging using the measured electric power.
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CN111114348A (en) * 2018-10-31 2020-05-08 现代自动车株式会社 Position alignment method, magnetic field detection apparatus, and position alignment apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111114348A (en) * 2018-10-31 2020-05-08 现代自动车株式会社 Position alignment method, magnetic field detection apparatus, and position alignment apparatus
CN111114348B (en) * 2018-10-31 2024-03-08 现代自动车株式会社 Position alignment method, magnetic field detection device, and position alignment device

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