JP2011015581A - Device for detecting deterioration of quick charger for electric vehicle - Google Patents

Device for detecting deterioration of quick charger for electric vehicle Download PDF

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JP2011015581A
JP2011015581A JP2009159236A JP2009159236A JP2011015581A JP 2011015581 A JP2011015581 A JP 2011015581A JP 2009159236 A JP2009159236 A JP 2009159236A JP 2009159236 A JP2009159236 A JP 2009159236A JP 2011015581 A JP2011015581 A JP 2011015581A
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charging
voltage
threshold value
value
quick charger
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Motofumi Katayama
基文 片山
Tomiyasu Sagane
富保 砂金
Takahiro Yamaguchi
高広 山口
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Saneisha Seisakusho KK
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Saneisha Seisakusho KK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/65—Monitoring or controlling charging stations involving identification of vehicles or their battery types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Tests Of Electric Status Of Batteries (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a deterioration detecting device which detects beforehand an increase in the impedance of a charging cable including a connector from a charger to a battery, issues an alarm, and suspends charging to protect a human body and prevent the burning of equipment upon finding abnormal conditions.SOLUTION: In a charging device, a charging cable 3 led out of a quick charger 1 is connected to a charging cable 4 connected to a battery unit 2 via a connector 5. The charging device includes a first voltmeter 6 which measures the voltage of the charging cable 3 led out of the quick charger 1 and a second voltmeter 7 which measures the voltage of a terminal of the charging cable 4 connected to the battery 2. A first threshold is set for a voltage difference greater than a normal value, the voltage difference being given by subtracting a voltage measured by the second voltmeter 7 from a voltage measured by the first voltmeter 6, and a second threshold is set for a voltage difference that is greater than the first threshold and that may lead to the burning of the charging cables and the connector. The charging device is provided with a means which issues a minor alarm while continuing charging when the measured voltage difference is greater than the first threshold and is smaller than the second threshold, and suspends the charging when the voltage difference is equal to or greater than the second threshold.

Description

この発明は、電気自動車用急速充電器の劣化検出装置に関するものである。   The present invention relates to a deterioration detection device for a quick charger for an electric vehicle.

電気自動車用急速充電器は高電圧、高電流で電気自動車に搭載されているバッテリ装置に充電する。急速充電器は充電ケーブルの使用頻度が高くなるとケーブルのインピーダンス増加、コネクタ接続部の接触抵抗が増加することが考えられ、異常発熱で充電ケーブルの焼損、人体への影響が考えられる。例えば、４００V、１００Ａ、（４０ＫＷ）で充電される場合、接触抵抗が１０ｍΩ増加したとしても１００Ｗにもなる。   The electric vehicle quick charger charges a battery device mounted on the electric vehicle with a high voltage and a high current. In the quick charger, when the frequency of use of the charging cable increases, the impedance of the cable and the contact resistance of the connector connection portion may increase. Abnormal heat generation may cause the charging cable to burn out and affect the human body. For example, when charging with 400 V, 100 A, (40 KW), even if the contact resistance is increased by 10 mΩ, it is 100 W.

従来、バッテリの劣化検出、劣化判定、劣化診断等の方法や装置、また、ケーブルの絶縁劣化検出装置等の個々の部分の劣化検出装置はある。   2. Description of the Related Art Conventionally, there are methods and apparatuses for battery deterioration detection, deterioration determination, deterioration diagnosis and the like, and individual portion deterioration detection apparatuses such as cable insulation deterioration detection apparatuses.

特開２０００−３２９８３４号公報JP 2000-329834 A 特開２００３−２１４２４８号公報JP 2003-214248 A 特開２０００−１４７０５２号公報JP 2000-147052 A

しかしながら、急速充電器からバッテリ装置までの充電装置の劣化検出や診断等の装置はない。従って、これらの劣化による充電ケーブルの焼損を防ぐ対策や作業の安全性の向上が要求されている。   However, there is no device for detecting deterioration or diagnosing the charging device from the quick charger to the battery device. Therefore, measures to prevent burnout of the charging cable due to these deteriorations and improvement in work safety are required.

この発明はこのような従来技術を考慮したものであって、事前に充電器からバッテリへの、コネクタを含む充電ケーブルのインピーダンスの増加等を検出し、アラームを発し、異常時には充電を止めて人体保護及び機器の焼損を防止する劣化検出装置を提供することを目的としたものである。   The present invention considers such a conventional technique, detects an increase in impedance of a charging cable including a connector from a charger to a battery in advance, generates an alarm, stops charging when an abnormality occurs, and stops the human body. An object of the present invention is to provide a deterioration detection device that protects and prevents equipment burnout.

そこで、請求項１の発明は、電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、前記急速充電器の出力電圧を測定する第１の電圧測定手段と、前記バッテリ装置の入力電圧を測定する第２の電圧測定手段とを有し、第１の電圧測定手段の測定電圧から第２の電圧測定手段の測定電圧を引いた電圧差が正常値より大きい値の第1の閾値を設け、また、この第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある電圧差の値を第２の閾値とし、前記計測した電圧差が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記電圧差が第２の閾値以上の場合は、当該充電を停止する手段を設けた、電気自動車用急速充電器劣化検出装置とした。   Accordingly, the invention of claim 1 is a quick charger that charges a battery device mounted on an electric vehicle in a short time, a charging cable derived from the quick charger, and a charge connected to the battery device. In a charging apparatus for connecting a cable to a connector, the charging apparatus includes a first voltage measuring unit that measures an output voltage of the quick charger and a second voltage measuring unit that measures an input voltage of the battery device. A first threshold value having a voltage difference obtained by subtracting the measured voltage of the second voltage measuring means from the measured voltage of the first voltage measuring means is greater than the normal value, and is greater than the first threshold, The value of the voltage difference that may cause the charging cable and the connector to burn out is set as the second threshold value. When the measured voltage difference is larger than the first threshold value and less than the second threshold value, charging is performed as a minor alarm. With an alarm while continued, and the voltage difference is equal to or larger than the second threshold value, and a means for stopping the charging, and the electric vehicle fast charger deterioration detector.

また、請求項２の発明は、電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、前記急速充電器の出力電圧を測定する第１の電圧測定手段と、前記バッテリ装置の入力電圧を測定する第２の電圧測定手段とを有し、第１の電圧測定手段の測定電圧から第２の電圧測定手段の測定電圧を引いた電圧差に前記充電ケーブルに設けた電流測定手段の測定電流値を乗じた電力値が正常値より大きい値の第1の閾値を設け、また、この第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある電力値を第２の閾値と、前記計測した電力値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記電力値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けた、電気自動車用急速充電器劣化検出装置とした。   The invention of claim 2 is a quick charger that charges a battery device mounted on an electric vehicle in a short time, a charging cable derived from the quick charger, and a charge connected to the battery device. In a charging apparatus for connecting a cable to a connector, the charging apparatus includes a first voltage measuring unit that measures an output voltage of the quick charger and a second voltage measuring unit that measures an input voltage of the battery device. A power value obtained by multiplying the voltage difference obtained by subtracting the measurement voltage of the second voltage measurement means from the measurement voltage of the first voltage measurement means by the measurement current value of the current measurement means provided in the charging cable is greater than the normal value. The first threshold value is provided, and a power value that is greater than the first threshold value and may cause the charging cable and the connector to be burned out is a second threshold value, and the measured power value is greater than the first threshold value. , If it is less than the second threshold, a warning is given while continuing charging as a minor alarm, and if the power value is greater than or equal to the second threshold, a means for stopping the charging is provided. A charger deterioration detection device was obtained.

また、請求項３の発明は、電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、前記急速充電器から導出された充電ケーブルの温度を測定する第１の温度センサと、前記コネクタの温度を測定する第２の温度センサと、前記バッテリ装置に接続された充電ケーブルの温度を測定する第３の温度センサとを有し、測定した温度が正常値より大きい値の第1の閾値を設け、また、前記第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある温度を第２の閾値とし、前記いずれかの温度センサの測定温度値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記いずれかの測定温度値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けた、自動車用急速充電器劣化検出装置とした。   According to a third aspect of the present invention, there is provided a quick charger that charges a battery device mounted on an electric vehicle in a short time, a charging cable derived from the quick charger, and a charge connected to the battery device. In a charging device for connecting a cable to a connector, a first temperature sensor for measuring the temperature of the charging cable derived from the quick charger, a second temperature sensor for measuring the temperature of the connector, A third temperature sensor for measuring the temperature of the charging cable connected to the battery device, and providing a first threshold value with a measured temperature value greater than a normal value, and greater than the first threshold value, The temperature at which the charging cable and the connector may be burned out is set as a second threshold value, and the measured temperature value of any one of the temperature sensors is larger than the first threshold value and less than the second threshold value. Provides an alarm while continuing charging as a minor alarm, and provided with means for stopping charging when any one of the measured temperature values is equal to or greater than the second threshold value, It was.

また、請求項４の発明は、前記請求項１〜３の装置の少なくとも２つを用い、前記双方の装置の計測値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記双方の装置の計測値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けたことを特徴とする、電気自動車用急速充電器劣化検出装置とした。   The invention of claim 4 uses at least two of the devices of claims 1 to 3, and if the measured values of both devices are larger than the first threshold and less than the second threshold, A quick charger for an electric vehicle characterized by providing a warning while continuing charging as an alarm and providing means for stopping the charging when the measured values of both devices are equal to or greater than the second threshold value A deterioration detection device was used.

請求項１〜４の発明では、第１の閾値と第２の閾値を設け、計算値又は測定値が第１の閾値から前記充電ケーブルやコネクタが損傷する第２の閾値未満までの場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記双方の装置の計算値又は測定値が前記充電ケーブル及びコネクタが焼損する第２の閾値以上の場合は、メジャーアラームとして当該充電を停止すると共に警報する構成としたため、当該充電の作業者は、マイナーアラームの警報を受けて、充電ケーブル等の劣化を確認するため、これによって充電ケーブル等の取替時期を早める等の措置を講ずることができる。また、メジャーアラームの場合は直ちに充電作業を停止して、充電ケーブル等を取替、ケーブルの焼損事故を未然に防ぐことが出来る。   In the inventions of claims 1 to 4, when the first threshold value and the second threshold value are provided, and the calculated value or the measured value is less than the second threshold value at which the charging cable or connector is damaged from the first threshold value, As a minor alarm, an alarm is given while charging continues, and when the calculated value or measured value of both the devices is equal to or greater than a second threshold at which the charging cable and connector burn out, the charging is stopped as a major alarm and an alarm is issued Since the charging operator receives a minor alarm and confirms the deterioration of the charging cable or the like, the charging operator can take measures such as accelerating the replacement time of the charging cable or the like. In the case of a major alarm, the charging operation can be stopped immediately, the charging cable etc. can be replaced, and the cable burnout accident can be prevented beforehand.

また、請求項１の発明によれば、急速充電器から電気自動車のバッテリまでの充電ケーブルやコネクタの劣化を、電圧降下分で検出するため、検出を確実かつ的確に行うことが出来る。また、請求項２の発明によれば、急速充電器から電気自動車のバッテリまでの充電ケーブルやコネクタの劣化を、電圧、電流積の電力算出方式で検出するため、検出をより確実かつ的確に行うことが出来る。また、請求項３の発明によれば、急速充電器から電気自動車のバッテリまでの充電ケーブルやコネクタの劣化をこれらの温度を測定することで検出するため、検出を確実かつ的確にすることが出来る。また、請求項４の発明によれば、前記請求項１〜３の少なくとも２つの装置を用い、２つの装置の測定値又は計算値により検出するため、検出がより確実で信頼性の高いものである。   According to the first aspect of the present invention, since the deterioration of the charging cable and connector from the quick charger to the battery of the electric vehicle is detected by the voltage drop, the detection can be performed reliably and accurately. According to the invention of claim 2, since the deterioration of the charging cable and connector from the quick charger to the battery of the electric vehicle is detected by the power calculation method of the voltage and current product, the detection is performed more reliably and accurately. I can do it. According to the invention of claim 3, since the deterioration of the charging cable and connector from the quick charger to the battery of the electric vehicle is detected by measuring these temperatures, the detection can be performed reliably and accurately. . According to the invention of claim 4, since at least two devices of the above claims 1 to 3 are used and detection is performed based on measured values or calculated values of the two devices, detection is more reliable and reliable. is there.

この発明は、電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、前記急速充電器から導出された充電ケーブルや前記バッテリ装置に接続される充電ケーブルや前記コネクタの電圧、電流、温度を測定し、これらの測定値から求めた計測値の正常値より大きい値を第1の閾値とし、また、この第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある値を第２の閾値として予め定め、前記計測値が第１の閾値以上であって、第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記計測値が第２の閾値以上の場合は、当該充電を停止する手段を設けた、電気自動車用急速充電器劣化検出装置とし、これにより前記充電ケーブル等の劣化による事故を未然に防ぐものである。   The present invention relates to a quick charger that charges a battery device mounted on an electric vehicle in a short time, wherein a charging cable derived from the quick charger and a charging cable connected to the battery device are connected with a connector. In the charging device to be connected through, the voltage, current, and temperature of the charging cable derived from the quick charger, the charging cable connected to the battery device, and the connector are measured, and the measured values obtained from these measured values A value larger than the normal value is set as the first threshold value, and a value that is larger than the first threshold value and may cause the charging cable and the connector to be burned out is determined in advance as the second threshold value. If the measured value is greater than or equal to the second threshold and less than the second threshold, a warning is given while continuing charging as a minor alarm, and if the measured value is greater than or equal to the second threshold, Provided with means for stopping the charging, the electric vehicle fast charger deterioration detector, thereby those prevent accidents due to deterioration such as the charging cable.

以下、この発明の実施例１を図に基づいて説明する。図１はこの発明の構成を示すもので、急速充電器１を電気自動車に搭載されているバッテリ装置２に接続して充電する場合、前記急速充電器１から導出された充電ケーブル３と、バッテリ装置に接続された充電ケーブル４とをコネクタ５を介して接続する充電装置において、前記急速充電器１から導出された充電ケーブル３の電圧を測定する第１の電圧計６と、前記バッテリ装置２に接続される充電ケーブル４の端末の電圧を測定する第２の電圧計７とを設ける。そして、第１の電圧計６の測定電圧から第２の電圧計７の測定電圧を引いた電圧差デルタＶが、正常値より大きい値を第１の閾値とし、前記充電ケーブル３又は４及びコネクタ５が焼損する恐れのある電圧差デルタＶを第２の閾値と予め定める。   Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of the present invention. When a quick charger 1 is connected to a battery device 2 mounted on an electric vehicle for charging, a charging cable 3 derived from the quick charger 1 and a battery are shown. In a charging device in which a charging cable 4 connected to the device is connected via a connector 5, a first voltmeter 6 for measuring the voltage of the charging cable 3 derived from the quick charger 1, and the battery device 2 And a second voltmeter 7 for measuring the voltage of the terminal of the charging cable 4 connected to the. The voltage difference delta V obtained by subtracting the measurement voltage of the second voltmeter 7 from the measurement voltage of the first voltmeter 6 is set to a value larger than the normal value as the first threshold, and the charging cable 3 or 4 and the connector A voltage difference delta V at which 5 may burn out is determined in advance as a second threshold value.

そして、前記第１の電圧計６の測定電圧から第２の電圧計の測定電圧を減じて電圧差デルタＶを算出する算出手段８を設け、また、前記算出された電圧差デルタＶが第1の閾値以上か以下か、また、第２の閾値以上か以下かを比較する比較手段９を設け、当該比較手段９において前記電圧差デルタＶが第１の閾値以上であって第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつその旨を警報する警報手段１０を設け、前記電圧差デルタＶが前記第２の閾値以上の場合は、当該充電を自動的に停止し、かつ当該充電停止を表示する充電停止手段１１を設けた。なお、前記マイナーアラームの警報は、音、光、これらの組み合わせ等適宜のものでよい。   Then, there is provided calculation means 8 for calculating the voltage difference delta V by subtracting the measurement voltage of the second voltmeter from the measurement voltage of the first voltmeter 6, and the calculated voltage difference delta V is the first voltage difference delta V. A comparison means 9 for comparing whether the voltage difference delta V is greater than or equal to a second threshold and less than or equal to a second threshold, and the voltage difference delta V is greater than or equal to a first threshold and less than a second threshold. In this case, a warning means 10 is provided to warn that while continuing charging as a minor alarm, and when the voltage difference delta V is equal to or greater than the second threshold, the charging is automatically stopped, and Charge stop means 11 for displaying the charge stop is provided. The minor alarm may be an appropriate one such as sound, light, or a combination thereof.

図２は、この発明の実施例２の構成を示す。この実施例２は、前記実施例1の構成に加え、充電ケーブル３に電流計１２を設け、第１の電圧計６の測定電圧から第２の電圧計７の測定電圧を引いた電圧差デルタＶに、前記電流計１２の測定電流を乗じて電力を算出する算出手段１３を設ける。そして、算出された電力値が正常値より大きい値を第１の閾値とし、当該第１の閾値より大きい値であって前記充電ケーブル３又は４及びコネクタ５が焼損する恐れのある電力値を第２の閾値と予め定める。また、前記算出された電力値が第1の閾値以上か以下か、また、第２の閾値以上か以下かを比較する比較手段１４を設け、当該比較手段１４において前記算出電力値が第1の閾値以上でありかつ第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつその旨を警報する警報手段１５を設け、前記電力値が前記第２の閾値以上の場合は、当該充電を停止し、かつ当該充電停止を表示する充電停止手段１６を設けた。   FIG. 2 shows the configuration of Embodiment 2 of the present invention. In the second embodiment, in addition to the configuration of the first embodiment, an ammeter 12 is provided in the charging cable 3, and a voltage difference delta obtained by subtracting the measured voltage of the second voltmeter 7 from the measured voltage of the first voltmeter 6. A calculating means 13 for calculating electric power by multiplying V by the measurement current of the ammeter 12 is provided. The calculated power value is a value greater than the normal value as the first threshold value, and the power value that is greater than the first threshold value and that may cause the charging cable 3 or 4 and the connector 5 to burn out is the first threshold value. A threshold value of 2 is predetermined. Further, a comparison unit 14 is provided for comparing whether the calculated power value is greater than or equal to a first threshold value and whether the calculated power value is greater than or less than a second threshold value. If it is greater than or equal to the threshold and less than the second threshold, alarm means 15 is provided to warn that while continuing charging as a minor alarm, and if the power value is greater than or equal to the second threshold, the charging is performed. Charge stopping means 16 for stopping and displaying the charge stop is provided.

なお、上記実施例１及び実施例２では、第１の電圧計６により充電ケーブル３の電圧を測定しているが、当該第１の電圧計６は急速充電器１の出力端子の電圧を測定しても同様である。要は、第１の電圧計６により、前記急速充電器１の出力電圧を測定するものであれば良い。また、第２の電圧計７により充電ケーブル４の電圧を測定しているが、当該第２の電圧計７はバッテリ装置２の入力端子の電圧を測定しても同様である。要は、第２の電圧計７によりバッテリ装置２の入力電圧を測定するものであれば良い。   In the first and second embodiments, the voltage of the charging cable 3 is measured by the first voltmeter 6. The first voltmeter 6 measures the voltage at the output terminal of the quick charger 1. Even so, it is the same. The point is that the output voltage of the quick charger 1 may be measured by the first voltmeter 6. Moreover, although the voltage of the charging cable 4 is measured by the second voltmeter 7, the second voltmeter 7 is the same even if the voltage of the input terminal of the battery device 2 is measured. In short, what is necessary is just to measure the input voltage of the battery device 2 by the second voltmeter 7.

図３は、この発明の実施例３の構成を示す。この実施例３は、充電ケーブル３、コネクタ５及び充電ケーブル４にそれぞれ順に温度センサ１７、１８、１９を設ける。そして、温度センサ１７，１８、１９の測定温度が、正常値より大きい値を第1の閾値とし、前記充電ケーブル３又は４及びコネクタ５が焼損する恐れのある温度を第２の閾値と予め定める。また、前記各温度センサ１７、１８、１９のいずれかの測定温度が第1の閾値以上か以下か、また、第２の閾値以上か以下かを比較する比較手段２０を設け、当該比較手段２０において前記いずれかの測定温度が第1の閾値以上でありかつ第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつその旨を警報する手段２１を設け、前記いずれかの測定温度が前記第２の閾値以上の場合は、当該充電を停止し、かつ当該充電停止を表示する手段２２を設けた。   FIG. 3 shows the configuration of Embodiment 3 of the present invention. In the third embodiment, temperature sensors 17, 18, and 19 are provided in order on the charging cable 3, the connector 5, and the charging cable 4, respectively. The measured temperature of the temperature sensors 17, 18, and 19 is set to a value greater than the normal value as the first threshold, and the temperature at which the charging cable 3 or 4 and the connector 5 may be burned out is determined as the second threshold. . Further, a comparison unit 20 is provided for comparing whether the measured temperature of each of the temperature sensors 17, 18, and 19 is equal to or higher than the first threshold value, and is equal to or higher than the second threshold value. If any one of the measured temperatures is equal to or higher than the first threshold value and lower than the second threshold value, means 21 is provided as a minor alarm to warn that fact while continuing to charge, When it is equal to or more than the second threshold value, means 22 for stopping the charging and displaying the charging stop is provided.

また、前記実施例１〜３の装置を複数設け、これらの複数の装置の計測値の一つ又は複数が、第１の閾値から第２の閾値までの間のものであれば、マイナーアラームを発し、第２の閾値以上であればメジャーアラームとして充電を停止し、当該停止を表示する構成としても良い。   In addition, if a plurality of the devices of the first to third embodiments are provided and one or more of the measurement values of the plurality of devices are between the first threshold value and the second threshold value, a minor alarm is generated. It may be configured to stop charging and display a stop as a major alarm if it is emitted and is greater than or equal to the second threshold.

この発明の実施例１の概略構成図である。It is a schematic block diagram of Example 1 of this invention. この発明の実施例２の概略構成図である。It is a schematic block diagram of Example 2 of this invention. この発明の実施例３の概略構成図である。It is a schematic block diagram of Example 3 of this invention.

１ 急速充電器 ２ バッテリ装置
３ 充電ケーブル ４ 充電ケーブル
５ コネクタ ６ 第1の電圧計
７ 第２の電圧計 ８ 算出手段
９ 比較手段 １０ 警報手段
１１ 充電停止手段 １２ 電流計
１３ 算出手段 １４ 比較手段
１５ 警報手段 １６ 充電停止手段
１７ 温度センサ １８ 温度センサ
１９ 温度センサ ２０ 比較手段
２１ 警報手段 ２２ 充電停止手段
1 Quick Charger 2 Battery Device 3 Charging Cable 4 Charging Cable 5 Connector 6 First Voltmeter
7 Second voltmeter 8 Calculation means 9 Comparison means 10 Alarm means 11 Charge stop means 12 Ammeter 13 Calculation means 14 Comparison means 15 Alarm means 16 Charge stop means 17 Temperature sensor 18 Temperature sensor 19 Temperature sensor 20 Comparison means 21 Alarm means 22 Charge stop means

Claims (4)

電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、
前記急速充電器の出力電圧を測定する第１の電圧測定手段と、前記バッテリ装置の入力電圧を測定する第２の電圧測定手段とを有し、
第１の電圧測定手段の測定電圧から第２の電圧測定手段の測定電圧を引いた電圧差が正常値より大きい値の第1の閾値を設け、また、この第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある電圧差の値を第２の閾値とし、前記計測した電圧差が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記電圧差が第２の閾値以上の場合は、当該充電を停止する手段を設けたことを特徴とする、電気自動車用急速充電器劣化検出装置。 A quick charger that charges a battery device mounted on an electric vehicle in a short time, wherein a charging cable derived from the quick charger and a charging cable connected to the battery device are connected via a connector. In the charging device,
First voltage measuring means for measuring an output voltage of the quick charger; and second voltage measuring means for measuring an input voltage of the battery device;
A voltage difference obtained by subtracting the measurement voltage of the second voltage measurement means from the measurement voltage of the first voltage measurement means is provided with a first threshold value that is larger than a normal value. The value of the voltage difference that may cause the cable and the connector to burn out is set as the second threshold value. If the measured voltage difference is larger than the first threshold value and less than the second threshold value, charging is continued as a minor alarm. A quick charger deterioration detection device for an electric vehicle, characterized by providing a means for stopping the charging when the voltage difference is equal to or greater than a second threshold. 電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、
前記急速充電器の出力電圧を測定する第１の電圧測定手段と、前記バッテリ装置の入力電圧を測定する第２の電圧測定手段とを有し、
第１の電圧測定手段の測定電圧から第２の電圧測定手段の測定電圧を引いた電圧差に前記充電ケーブルに設けた電流計の測定電流値を乗じた電力値が正常値より大きい値の第1の閾値を設け、また、この第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある電力値を第２の閾値と、前記計測した電力値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記電力値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けたことを特徴とする、電気自動車用急速充電器劣化検出装置。 A quick charger that charges a battery device mounted on an electric vehicle in a short time, wherein a charging cable derived from the quick charger and a charging cable connected to the battery device are connected via a connector. In the charging device,
First voltage measuring means for measuring an output voltage of the quick charger; and second voltage measuring means for measuring an input voltage of the battery device;
A power value obtained by multiplying a voltage difference obtained by subtracting a measurement voltage of the second voltage measurement means from a measurement voltage of the first voltage measurement means by a measurement current value of an ammeter provided on the charging cable is greater than a normal value. A threshold value of 1 is provided, and a power value that is greater than the first threshold value and that may cause the charging cable and the connector to burn out is a second threshold value, and the measured power value is greater than the first threshold value, When it is less than the second threshold, it is a warning while continuing charging as a minor alarm, and when the power value is greater than or equal to the second threshold, means for stopping the charging is provided, Rapid charger deterioration detector for electric vehicles. 電気自動車に搭載されているバッテリ装置に短時間で充電する急速充電器であって、前記急速充電器から導出された充電ケーブルと、バッテリ装置に接続された充電ケーブルとをコネクタを介して接続する充電装置において、
前記急速充電器から導出された充電ケーブルの温度を測定する第１の温度センサと、前記コネクタの温度を測定する第２の温度センサと、前記バッテリ装置に接続された充電ケーブルの温度を測定する第３の温度センサとを有し、
測定した温度が正常値より大きい値の第1の閾値を設け、また、前記第1の閾値より大きく、前記充電ケーブル及びコネクタが焼損する恐れのある温度を第２の閾値とし、
前記いずれかの温度センサの測定温度値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記いずれかの測定温度値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けたことを特徴とする、電気自動車用急速充電器劣化検出装置。 A quick charger that charges a battery device mounted on an electric vehicle in a short time, wherein a charging cable derived from the quick charger and a charging cable connected to the battery device are connected via a connector. In the charging device,
A first temperature sensor for measuring a temperature of the charging cable derived from the quick charger; a second temperature sensor for measuring a temperature of the connector; and a temperature of the charging cable connected to the battery device. A third temperature sensor;
A first threshold value with a measured temperature value greater than a normal value is provided, and a temperature at which the charging cable and connector may be burned out is greater than the first threshold value as a second threshold value.
If the measured temperature value of any one of the temperature sensors is greater than the first threshold value and less than the second threshold value, a warning is given while continuing charging as a minor alarm, and any one of the measured temperature values is the first threshold value. A quick charger deterioration detecting device for an electric vehicle, characterized in that means for stopping the charging is provided when the threshold value is 2 or more. 前記請求項１〜３の装置の少なくとも２つを用い、前記双方の装置の計測値が第１の閾値より大きく、前記第２の閾値未満の場合は、マイナーアラームとして充電を継続しつつ警報すると共に、前記双方の装置の計測値が前記第２の閾値以上の場合は、当該充電を停止する手段を設けたことを特徴とする、電気自動車用急速充電器劣化検出装置。   When at least two of the devices of claims 1 to 3 are used and the measured value of both devices is greater than a first threshold value and less than the second threshold value, a warning is given while continuing charging as a minor alarm. In addition, the quick charger deterioration detecting device for an electric vehicle is provided with means for stopping the charging when the measured values of both the devices are equal to or greater than the second threshold value.
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