JP2015171180A - vehicle - Google Patents

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JP2015171180A
JP2015171180A JP2014042666A JP2014042666A JP2015171180A JP 2015171180 A JP2015171180 A JP 2015171180A JP 2014042666 A JP2014042666 A JP 2014042666A JP 2014042666 A JP2014042666 A JP 2014042666A JP 2015171180 A JP2015171180 A JP 2015171180A
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power
charging
vehicle
command value
pcom
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英司 北野
Eiji Kitano
英司 北野
健次 村里
Kenji Murasato
健次 村里
鈴木　保男
Yasuo Suzuki
保男 鈴木
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Toyota Motor Corp
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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

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress a sudden change in the electric power being supplied to other electrical equipment connected to a power source outside a vehicle, when starting an on-vehicle battery charge by using the power source outside the vehicle.SOLUTION: In a vehicle that can be charged from outside to charge an on-vehicle battery by using a system power source outside the vehicle, at the time of starting a power supply from outside, when increasing a charging power command value Pcom (that is, the power supplied from the system power source to the battery) from zero (0) to a charging power target value Ptag, an ECU keeps the charging power command value Pcom to a power level between zero (0) and the charging power target value Ptag for a prescribed period. After the prescribed period has passed, the charging power command value Pcom is increased to the charging power target value Ptag.

Description

本発明は、車両外部の電源を用いて車載のバッテリを充電可能な車両に関する。   The present invention relates to a vehicle capable of charging an in-vehicle battery using a power source external to the vehicle.

特開２０１３−３８８３２号公報（特許文献１）には、車両外部の電源を用いて車載のバッテリを充電するための充電システムが開示されている。   Japanese Patent Laying-Open No. 2013-38832 (Patent Document 1) discloses a charging system for charging an in-vehicle battery using a power source external to the vehicle.

特開２０１３−３８８３２号公報JP 2013-38832 A

しかしながら、住宅などの家屋に設置される系統電源を用いて車載のバッテリを充電する際に、系統電源から車両側に急に大きな電力が供給されると、系統電源に接続される他の電気機器に供給される電力が急変し、たとえば家屋内の電球などの明るさが変動するおそれがある。   However, when charging a vehicle-mounted battery using a system power source installed in a house such as a house, if a large amount of power is suddenly supplied from the system power source to the vehicle side, other electrical devices connected to the system power source There is a risk that the power supplied to the abruptly changes, for example, the brightness of a light bulb in a house changes.

本発明は、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、車両外部の電源を用いて車載のバッテリを充電する外部充電の開始時に、車両外部の電源に接続された他の電気機器に供給される電力が急変することを抑制することである。   The present invention has been made in order to solve the above-described problems, and its object is to connect to a power source external to the vehicle at the start of external charging for charging an in-vehicle battery using a power source external to the vehicle. It is to suppress the sudden change in the power supplied to other electrical devices.

この発明に係る車両は、車両外部の電源から供給される外部電力で車載のバッテリを充電する外部充電が可能な車両であって、車両外部の電源に接続される充電インレットと、充電インレットとバッテリとに接続される充電器と、充電器を制御することによってバッテリに供給される充電電力を制御する制御装置とを備える。制御装置は、外部充電の開始時に充電電力を第１電力から第２電力に増加させる際に、充電電力を第１電力と第２電力との間の第３電力に所定期間維持し、所定期間の経過後に充電電力を第２電力に増加させる。   A vehicle according to the present invention is a vehicle capable of external charging in which an in-vehicle battery is charged with external power supplied from a power supply external to the vehicle, the charging inlet connected to the power supply external to the vehicle, the charging inlet, and the battery And a control device for controlling charging power supplied to the battery by controlling the charger. When increasing the charging power from the first power to the second power at the start of external charging, the control device maintains the charging power at a third power between the first power and the second power for a predetermined period, After the elapse of time, the charging power is increased to the second power.

本発明によれば、外部充電の開始時に、車両外部の電源から車両側に供給される電力を段階的に増加させる。そのため、外部充電の開始時に、車両外部の電源に接続された他の電気機器に供給される電力が急変することを抑制することができる。   According to the present invention, at the start of external charging, the electric power supplied from the power supply outside the vehicle to the vehicle side is increased stepwise. Therefore, it is possible to suppress a sudden change in the electric power supplied to another electrical device connected to a power source outside the vehicle at the start of external charging.

車両の構成を模式的に示す図である。It is a figure which shows the structure of a vehicle typically. ＥＣＵが外部充電を行なう場合の処理の流れを示すフローチャートである。It is a flowchart which shows the flow of a process in case ECU performs external charging. 外部充電を開始および停止するときの系統電圧の変化を例示した図である。It is the figure which illustrated the change of the system voltage when starting and stopping external charge.

以下、本発明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。図中同一または相当部分には同一符号を付してその説明は繰返さない。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

図１は、車両１の構成を模式的に示す図である。車両１は、車両外部の系統電源２００を用いて車載のバッテリ３０を充電する外部充電を行なうための充電システムを備える。   FIG. 1 is a diagram schematically illustrating the configuration of the vehicle 1. The vehicle 1 includes a charging system for performing external charging for charging the in-vehicle battery 30 using the system power supply 200 outside the vehicle.

この充電システムは、充電インレット１０と、充電器２０と、ＥＣＵ（Electronic Control Unit）４０とを含む。   This charging system includes a charging inlet 10, a charger 20, and an ECU (Electronic Control Unit) 40.

充電インレット１０は、家屋に設置された系統電源２００から供給される電力（以下「外部電力」という）を受けるための電力インターフェースである。充電インレット１０は、系統電源２００に接続された充電コネクタ２１０と接続可能に構成される。   The charging inlet 10 is a power interface for receiving power (hereinafter referred to as “external power”) supplied from the system power supply 200 installed in the house. Charging inlet 10 is configured to be connectable to charging connector 210 connected to system power supply 200.

充電器２０は、充電インレット１０およびバッテリ３０と電気的に接続される。充電器２０は、ＥＣＵ４０からの制御信号に基づいて、充電インレット１０が受けた外部電力をバッテリ３０に充電可能な電力に変換してバッテリ３０に出力する。これにより、外部充電が行なわれる。   The charger 20 is electrically connected to the charging inlet 10 and the battery 30. Based on a control signal from ECU 40, charger 20 converts external power received by charging inlet 10 into electric power that can charge battery 30 and outputs the electric power to battery 30. Thereby, external charging is performed.

さらに、図示していないが、車両１には、バッテリ３０の状態（温度、電流、電圧、蓄電量など）を監視するためのセンサなど、外部充電を行なうために必要なさまざまな物理量を検出するための複数のセンサが備えられる。   Further, although not shown, the vehicle 1 detects various physical quantities necessary for external charging, such as a sensor for monitoring the state of the battery 30 (temperature, current, voltage, stored amount, etc.). A plurality of sensors are provided.

ＥＣＵ４０は、図示しないＣＰＵ（Central Processing Unit）およびメモリを内蔵する。ＥＣＵ６０は、各センサからの情報およびメモリに記憶された情報に基づいて所定の演算処理を実行し、演算結果に基づいて充電電力指令値Ｐｃｏｍを設定し、外部充電によってバッテリ３０に供給される電力（以下「充電電力Ｐ」ともいう）が充電電力指令値Ｐｃｏｍになるように充電器２０を制御する。   The ECU 40 includes a CPU (Central Processing Unit) and a memory (not shown). The ECU 60 executes predetermined calculation processing based on information from each sensor and information stored in the memory, sets a charging power command value Pcom based on the calculation result, and supplies power to the battery 30 by external charging. Charger 20 is controlled such that (hereinafter also referred to as “charging power P”) becomes charging power command value Pcom.

系統電源２００には、充電コネクタ２１０とは別に、家屋で用いられる電気機器（たとえば電球など）が接続されている。   In addition to the charging connector 210, the system power source 200 is connected to an electrical device (such as a light bulb) used in a house.

以上のような構成を有する車両１において、外部充電を開始する際に、系統電源２００から車両１側に急に大きな電力が供給されると、系統電圧が急に低下する。この影響で、系統電源２００に接続された他の電気機器に供給される電力が急変し、たとえば電球などの明るさが変動するおそれがある。   In the vehicle 1 having the above-described configuration, when large electric power is suddenly supplied from the system power supply 200 to the vehicle 1 side when starting external charging, the system voltage suddenly decreases. Due to this influence, the power supplied to other electrical devices connected to the system power supply 200 may change suddenly, and the brightness of, for example, a light bulb may change.

そこで、本実施の形態によるＥＣＵ２００は、外部充電を開始する際に、充電電力指令値Ｐｃｏｍを段階的に増加させる。   Therefore, ECU 200 according to the present embodiment increases charging power command value Pcom stepwise when starting external charging.

図２は、ＥＣＵ４０が外部充電を行なう場合の処理の流れを示すフローチャートである。このフローチャートは、所定のサイクル周期で繰り返し実行される。   FIG. 2 is a flowchart showing the flow of processing when the ECU 40 performs external charging. This flowchart is repeatedly executed at a predetermined cycle period.

Ｓ１０にて、ＥＣＵ４０は、充電電力目標値Ｐｔａｇを設定する。充電電力目標値Ｐｔａｇは、バッテリ３０の蓄電量などに応じて変動する可変値であってもよいし、予め定められた固定値であってもよい。いずれの場合であっても、充電電力目標値Ｐｔａｇは、外部充電開始前は０に設定され、外部充電開始後は０よりも大きい値に設定され、外部充電完了後は再び０に設定される。   In S10, ECU 40 sets charging power target value Ptag. The charging power target value Ptag may be a variable value that varies according to the amount of power stored in the battery 30, or may be a predetermined fixed value. In any case, the charging power target value Ptag is set to 0 before the start of external charging, is set to a value greater than 0 after the start of external charging, and is set to 0 again after the completion of external charging. .

Ｓ１１にて、ＥＣＵ４０は、即充電停止要求があるか否かを判定する。たとえば、ＥＣＵ４０は、充電システムのいずれかの箇所に異常が生じた場合、即充電停止要求があると判定する。即充電停止要求がある場合（Ｓ１１にてＹＥＳ）、ＥＣＵ４０は、処理をＳ１４（後述）に移す。   In S11, ECU 40 determines whether or not there is an immediate charge stop request. For example, the ECU 40 determines that there is an immediate charge stop request when an abnormality occurs in any part of the charging system. When there is an immediate charge stop request (YES in S11), ECU 40 moves the process to S14 (described later).

即充電停止要求がない場合（Ｓ１１にてＮＯ）、ＥＣＵ４０は、Ｓ１２にて、充電電力指令値Ｐｃｏｍの変化量の制限中である（後述のＳ１６あるいはＳ１９の処理中である）か否かを判定する。   If there is no immediate charge stop request (NO in S11), ECU 40 determines in S12 whether or not the amount of change in charge power command value Pcom is being restricted (processing in S16 or S19 described later). judge.

充電電力指令値Ｐｃｏｍの変化量の制限中でない場合（Ｓ１２にてＮＯ）、ＥＣＵ４０は、Ｓ１３にて、充電電力目標値Ｐｔａｇと前回サイクルの充電電力指令値Ｐｃｏｍとの差の絶対値がしきい値αよりも大きいか否かを判定する。   When the amount of change in charge power command value Pcom is not limited (NO in S12), ECU 40 determines in S13 the absolute value of the difference between charge power target value Ptag and the charge power command value Pcom of the previous cycle. It is determined whether or not the value is larger than α.

充電電力目標値Ｐｔａｇと前回サイクルの充電電力指令値Ｐｃｏｍとの差の絶対値がしきい値α未満である場合（Ｓ１３にてＮＯ）、ＥＣＵ４０は、Ｓ１４にて、今回サイクルの充電電力指令値Ｐｃｏｍを充電電力目標値Ｐｔａｇに設定する。すなわち、充電電力指令値Ｐｃｏｍの変化量は制限されない。その後、ＥＣＵ４０は、Ｓ１５にて、制限カウンタをクリアする。   When the absolute value of the difference between charging power target value Ptag and charging power command value Pcom of the previous cycle is less than threshold value α (NO in S13), ECU 40 determines the charging power command value of the current cycle in S14. Pcom is set to the charging power target value Ptag. That is, the amount of change in charge power command value Pcom is not limited. Thereafter, the ECU 40 clears the limit counter in S15.

一方、充電電力目標値Ｐｔａｇと前回サイクルの充電電力指令値Ｐｃｏｍとの差の絶対値がしきい値αを超えている場合（Ｓ１３にてＹＥＳ）、ＥＣＵ４０は、Ｓ１６にて、前回サイクルからの充電電力指令値Ｐｃｏｍの変化量をしきい値αに制限する。具体的には、充電電力目標値Ｐｔａｇが前回サイクルの充電電力指令値Ｐｃｏｍよりも大きい場合、ＥＣＵ４０は、今回サイクルの充電電力指令値Ｐｃｏｍを、前回サイクルの充電電力指令値Ｐｃｏｍにしきい値αを加えた値に設定する。充電電力目標値Ｐｔａｇが前回サイクルの充電電力指令値Ｐｃｏｍよりも小さい場合、ＥＣＵ４０は、今回サイクルの充電電力指令値Ｐｃｏｍを、前回サイクルの充電電力指令値Ｐｃｏｍからしきい値αを減じた値に設定する。その後、ＥＣＵ２００は、Ｓ１７にて、制限カウンタをインクリメント（増加）する。   On the other hand, when the absolute value of the difference between charge power target value Ptag and the charge power command value Pcom of the previous cycle exceeds threshold value α (YES in S13), ECU 40 starts from the previous cycle in S16. The amount of change in charge power command value Pcom is limited to threshold value α. Specifically, when the charging power target value Ptag is larger than the charging power command value Pcom of the previous cycle, the ECU 40 sets the charging power command value Pcom of the current cycle and the threshold value α to the charging power command value Pcom of the previous cycle. Set to the added value. When the charging power target value Ptag is smaller than the charging power command value Pcom of the previous cycle, the ECU 40 sets the charging power command value Pcom of the current cycle to a value obtained by subtracting the threshold value α from the charging power command value Pcom of the previous cycle. Set. Thereafter, the ECU 200 increments (increases) the limit counter in S17.

充電電力指令値Ｐｃｏｍの変化量の制限中である場合（Ｓ１２にてＹＥＳ）、ＥＣＵ４０は、Ｓ１８にて、制限カウンタが所定値を超えたか否かを判定する。   If the amount of change in charge power command value Pcom is being restricted (YES in S12), ECU 40 determines in S18 whether the limit counter has exceeded a predetermined value.

制限カウンタが所定値を超えていない場合（Ｓ１８にてＮＯ）、すなわち充電電力指令値Ｐｃｏｍの変化量を制限し始めてから所定期間が未だ経過していない場合、ＥＣＵ４０は、Ｓ１９にて、今回サイクルの充電電力指令値Ｐｃｏｍを前回サイクルの充電電力指令値Ｐｃｏｍのままとし、充電電力指令値Ｐｃｏｍの変化量の制限を継続する。その後、ＥＣＵ４０は、処理をＳ１７に移して、制限カウンタをインクリメントする。   If the limit counter does not exceed the predetermined value (NO in S18), that is, if the predetermined period has not yet elapsed since the start of limiting the amount of change in charge power command value Pcom, ECU 40 performs the current cycle in S19. The charging power command value Pcom is kept the charging power command value Pcom of the previous cycle, and the amount of change in the charging power command value Pcom is continuously limited. Thereafter, the ECU 40 moves the process to S17 and increments the limit counter.

図３は、外部充電を開始および停止するときの系統電圧の変化を例示した図である。
時刻ｔ１以前は、外部充電開始前であるため、充電電力指令値Ｐｃｏｍが０に設定される。 FIG. 3 is a diagram illustrating a change in system voltage when external charging is started and stopped.
Before the time t1, the charging power command value Pcom is set to 0 because it is before the start of external charging.

外部充電が開始される時刻ｔ１にて、充電電力目標値Ｐｔａｇが設定される。しかしながら、設定された充電電力目標値Ｐｔａｇと前回サイクルの充電電力指令値Ｐｃｏｍ（＝０）との差がしきい値αを超えているため、充電電力指令値Ｐｃｏｍは、０と充電電力目標値Ｐｔａｇとの間の電力値Ｐｍｉｄ（＝α）に設定される。   At time t1 when external charging is started, charging power target value Ptag is set. However, since the difference between the set charging power target value Ptag and the charging power command value Pcom (= 0) of the previous cycle exceeds the threshold value α, the charging power command value Pcom is 0 and the charging power target value. The electric power value Pmid (= α) between Ptag is set.

時刻ｔ１から制限カウンタが所定値に達する時刻ｔ２までの期間は、充電電力指令値Ｐｃｏｍは電力値Ｐｍｉｄに維持される。これにより、充電電力指令値Ｐｃｏｍを急激に充電電力目標値Ｐｔａｇまで増加する場合に比べて、系統電圧（実効値）の瞬間的な低下量を小さくすることができる。   During a period from time t1 to time t2 when the limit counter reaches a predetermined value, charging power command value Pcom is maintained at power value Pmid. Thereby, compared with the case where charging power command value Pcom is suddenly increased to charging power target value Ptag, the instantaneous decrease amount of the system voltage (effective value) can be reduced.

時刻ｔ２にて制限カウンタが所定値に達すると、充電電力指令値Ｐｃｏｍが電力値Ｐｍｉｄから充電電力目標値Ｐｔａｇに増加される。   When the limit counter reaches a predetermined value at time t2, charging power command value Pcom is increased from power value Pmid to charging power target value Ptag.

このように、外部充電の開始時に充電電力指令値Ｐｃｏｍを０から充電電力目標値Ｐｔａｇまで増加させる際に、充電電力指令値Ｐｃｏｍを０と充電電力目標値Ｐｔａｇとの間の電力値Ｐｍｉｄに所定期間維持し、所定期間の経過後に充電電力指令値Ｐｃｏｍを充電電力目標値Ｐｔａｇに増加させる。これにより、充電電力指令値Ｐｃｏｍを瞬間的に充電電力目標値Ｐｔａｇまで増加させる場合に比べて、系統電圧（実効値）の瞬間的な低下量を小さくすることができる。そのため、系統電源２００に接続された他の電気機器に供給される電力が急変することを抑制することができる。   As described above, when the charging power command value Pcom is increased from 0 to the charging power target value Ptag at the start of external charging, the charging power command value Pcom is set to a power value Pmid between 0 and the charging power target value Ptag. The period is maintained, and the charging power command value Pcom is increased to the charging power target value Ptag after elapse of a predetermined period. Thereby, compared with the case where charging power command value Pcom is instantaneously increased to charging power target value Ptag, the amount of instantaneous decrease in system voltage (effective value) can be reduced. Therefore, it is possible to suppress a sudden change in the power supplied to other electrical devices connected to the system power supply 200.

また、時刻ｔ３以降に外部充電を停止する際にも、同様に、充電電力指令値Ｐｃｏｍの変化量をしきい値αに制限することによって、充電電力指令値Ｐｃｏｍを瞬間的に低下させるのではなく、段階的に低下させる。これにより、系統電圧（実効値）の瞬間的な増加量を小さくすることができ、系統電源２００に接続された他の電気機器に供給される電力が急変してしまうことを抑制することができる。   Similarly, when external charging is stopped after time t3, similarly, by limiting the amount of change in the charging power command value Pcom to the threshold value α, the charging power command value Pcom may be reduced instantaneously. Not in stages. Thereby, the instantaneous increase amount of system voltage (effective value) can be made small, and it can control that the electric power supplied to other electric equipment connected to system power supply 200 changes suddenly. .

以上のように、本実施の形態によるＥＣＵ４０は、外部充電の開始時において、充電電力指令値Ｐｃｏｍ（すなわち系統電源２００からバッテリ３０に供給される電力）を、急激に増加させるのではなく、段階的に増加させる。そのため、外部充電の開始時に系統電源２００に接続された他の電気機器に供給される電力が急変することを抑制することができる。   As described above, the ECU 40 according to the present embodiment does not increase the charging power command value Pcom (that is, the power supplied from the system power supply 200 to the battery 30) abruptly at the start of external charging. Increase. Therefore, it is possible to suppress a sudden change in the power supplied to other electrical devices connected to the system power supply 200 at the start of external charging.

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。本発明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 invention 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、１０ 充電インレット、２０ 充電器、３０ バッテリ、４０ ＥＣＵ、２００ 系統電源、２１０ 充電コネクタ。   1 vehicle, 10 charging inlet, 20 charger, 30 battery, 40 ECU, 200 system power supply, 210 charging connector.

Claims (1)

車両外部の電源から供給される電力で車載のバッテリを充電する外部充電が可能な車両であって、
前記車両外部の電源に接続される充電インレットと、
前記充電インレットと前記バッテリとに接続される充電器と、
前記充電器を制御することによって前記バッテリに供給される充電電力を制御する制御装置とを備え、
前記制御装置は、前記外部充電の開始時に前記充電電力を第１電力から第２電力に増加させる際に、前記充電電力を前記第１電力と前記第２電力との間の第３電力に所定期間維持し、前記所定期間の経過後に前記充電電力を前記第２電力に増加させる、車両。 A vehicle capable of external charging that charges an in-vehicle battery with electric power supplied from a power source outside the vehicle,
A charging inlet connected to a power source external to the vehicle;
A charger connected to the charging inlet and the battery;
A control device for controlling charging power supplied to the battery by controlling the charger;
The control device sets the charging power to a third power between the first power and the second power when increasing the charging power from the first power to the second power at the start of the external charging. A vehicle that maintains a period and increases the charging power to the second power after the lapse of the predetermined period.
JP2014042666A 2014-03-05 2014-03-05 vehicle Pending JP2015171180A (en)

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