JPH08265986A - Inductive charging method - Google Patents

Inductive charging method

Info

Publication number
JPH08265986A
JPH08265986A JP7087529A JP8752995A JPH08265986A JP H08265986 A JPH08265986 A JP H08265986A JP 7087529 A JP7087529 A JP 7087529A JP 8752995 A JP8752995 A JP 8752995A JP H08265986 A JPH08265986 A JP H08265986A
Authority
JP
Japan
Prior art keywords
charging
battery
frequency
power
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7087529A
Other languages
Japanese (ja)
Inventor
Tomohiro Kesseki
友宏 結石
Shiyuuji Arisaka
秋司 有坂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP7087529A priority Critical patent/JPH08265986A/en
Publication of JPH08265986A publication Critical patent/JPH08265986A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule

Abstract

PURPOSE: To shorten the charging time of battery while reducing power loss by regulating the frequency of power being supplied from a charging station to a battery through electromagnetic induction and charging the battery with constant current in the first half of charging operation while charging the battery with constant voltage in the second half of charging operation. CONSTITUTION: When an electric automobile is charged, power is fed through a frequency converter and a noncontact connector to the automobile side by electromagnetic induction and then it is fed through a rectifier to a battery. A charge controller for battery detects the charging current and voltage of battery and delivers the data thereof to the charging station side where the frequency of power to be fed is controlled depending on the data. In case of 8 hour charging, for example, the frequency is varied in the range of 200-30kHz for 5 hours after start of charging operation so that the battery is charged with a constant current and then the frequency is varied in the range of 200-10kHz for the remaining 3 hours so that the battery is charged with a constant voltage.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は電気自動車などのバッテ
リーの充電方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of charging a battery such as an electric vehicle.

【０００２】[0002]

【従来の技術】電気自動車のバッテリーの充電方法とし
ては、例えば「急速充電システムと非接触方式充電につ
いて」…バッテリー技術シンポジウム(1994)pG5-4-1〜G
5-4-9に示されるように、非接触の充電システムがあ
る。これは、非接触コネクタを具える充電ステーション
から電磁誘導により電力をバッテリーに供給するシステ
ムである。従来、この種のシステムでは、一定の周波数
の電力を供給する方法が用いられていた。2. Description of the Related Art As a method of charging a battery of an electric vehicle, for example, "rapid charging system and non-contact charging" ... Battery Technology Symposium (1994) pG5-4-1 ~ G
There is a contactless charging system, as shown in 5-4-9. This is a system that supplies power to a battery by electromagnetic induction from a charging station with a contactless connector. Conventionally, in this type of system, a method of supplying electric power of a constant frequency has been used.

【０００３】[0003]

【発明が解決しようとする課題】しかし、この充電方法
には、以下のような課題があった。 バッテリーの充電に最適な電力供給方法とならず、バ
ッテリーの充電時間が長くなる。すなわち、充電の初期
の段階で、周波数一定、電圧一定とすると、電圧を変え
る場合に比べて充電時間がかかる。 常に同じ周波数の電力を供給するので、発生する電力
損失が大きくなる。すなわち、充電の終盤では電流が少
なくても電力供給ができ、電力損失は周波数の２乗に比
例するので、周波数を下げた方が損失を小さくできる。However, this charging method has the following problems. It is not the best power supply method to charge the battery, and the battery charging time becomes longer. That is, if the frequency is constant and the voltage is constant in the initial stage of charging, the charging time is longer than that when the voltage is changed. Since the electric power of the same frequency is always supplied, the generated electric power loss becomes large. That is, at the end of charging, power can be supplied even if the current is small, and the power loss is proportional to the square of the frequency. Therefore, lowering the frequency can reduce the loss.

【０００４】[0004]

【課題を解決するための手段】本発明は上記の課題を解
消するためになされたもので、その特徴は、非接触コネ
クタを具える充電ステーションから電磁誘導により電力
をバッテリーに供給するインダクティブ充電方法におい
て、供給電力の周波数を調整することにより、充電の前
半部を定電流充電（電流が一定となるように電圧を変化
させる）とし、後半部を定電圧充電（電圧が一定となる
ように電流を変化させる）とすることにある。このと
き、バッテリー側の充電コントローラから無線によりバ
ッテリーの充電電圧、電流値を充電ステーションに送信
し、この信号に対応して、供給する電力の周波数を変化
させることが好ましい。The present invention has been made to solve the above problems, and is characterized by an inductive charging method for supplying power to a battery by electromagnetic induction from a charging station having a non-contact connector. In the above, by adjusting the frequency of the supplied power, the first half of charging is constant current charging (changing the voltage so that the current is constant), and the latter half is constant voltage charging (current so that the voltage is constant). To change). At this time, it is preferable to wirelessly transmit the charging voltage and current value of the battery from the charging controller on the battery side to the charging station, and change the frequency of the supplied power in response to this signal.

【０００５】[0005]

【作用】供給電力の周波数を変えることで、電流、電圧
値を調整し、充電の前半部は定電流充電となり、後半部
は定電圧充電とすることができる。そのため、バッテリ
ーの充電時間の短縮および発生する電力損失の低減を図
ることができる。By changing the frequency of the supplied power, the current and voltage values can be adjusted, and the first half of charging can be constant current charging and the latter half can be constant voltage charging. Therefore, the charging time of the battery and the generated power loss can be reduced.

【０００６】[0006]

【実施例】以下、電気自動車の充電を例として、本発明
の実施例を説明する。図１は本発明方法のブロック説明
図で、図示のように、商用周波数電力の周波数を変換で
きるように、周波数変換器１が設けられている。本例で
は、周波数変換器１により、供給電力の周波数を１０kH
z 〜３００kHz まで連続的に可変できるように構成して
いる。Embodiments of the present invention will be described below by taking charging of an electric vehicle as an example. FIG. 1 is a block diagram of the method of the present invention. As shown in the figure, a frequency converter 1 is provided so that the frequency of the commercial frequency power can be converted. In this example, the frequency converter 1 controls the frequency of the supplied power to 10 kHz.
It is configured to be continuously variable from z to 300 kHz.

【０００７】周波数変換器１を経た電力は、自動車側と
は非接触のコネクタ２を介して、電磁誘導により自動車
側に供給され、整流器３を介してバッテリー４に供給さ
れる。ここで、バッテリー４には充電コントローラ５が
具えられ、バッテリー４の充電電流および充電電圧を検
知して、そのデータを充電ステーション側に送信する。
充電ステーションでは、この信号に対応して、供給電力
の周波数制御を行うのである。The electric power passing through the frequency converter 1 is supplied to the automobile side by electromagnetic induction through a connector 2 which is not in contact with the automobile side, and is supplied to the battery 4 through a rectifier 3. Here, the battery 4 includes a charge controller 5, which detects a charging current and a charging voltage of the battery 4 and transmits the data to the charging station side.
The charging station controls the frequency of the supplied power in response to this signal.

【０００８】このようなシステムを用いて、例えば、８
時間の充電を行う際には、図２に示すように、充電開始
後５時間は定電流充電となるよう、周波数を２００kHz
〜３００kHz の間で変化させ、後半の３時間は定電圧充
電となるよう、２００kHz 〜１０kHz の間で変化させ
る。充電の終盤は電流が小さくても電力供給できるた
め、上記のように、周波数を下げて電力損失を小さくす
ることで、バッテリーの充電特性にあった効率的な充電
を行うことができる。Using such a system, for example, 8
When charging for an hour, as shown in Fig. 2, the frequency is set to 200 kHz so that constant current charging is performed for 5 hours after the start of charging.
Change between ~ 300kHz and change between 200kHz ~ 10kHz so that constant voltage charging will be performed for the last 3 hours. Since electric power can be supplied at the end of charging even when the current is small, as described above, by lowering the frequency to reduce the power loss, efficient charging suitable for the charging characteristics of the battery can be performed.

【０００９】[0009]

【発明の効果】以上説明したように、本発明方法によれ
ば、インダクティブ充電において、供給電力の周波数を
変化させることにより、電流，電圧値を調整し、バッテ
リーの充電時間の短縮と、発生する電力損失の低減を図
ることができる。特に、バッテリーの充電電流、電圧値
を無線で充電ステーションに送り、この信号に対応して
供給電力の周波数を変化させれば、バッテリーの充電特
性にあった効率的な充電を行うことができる。従って、
電気自動車の充電に適用すると効果的である。As described above, according to the method of the present invention, in inductive charging, the current and voltage values are adjusted by changing the frequency of the supplied power, and the battery charging time is shortened. Power loss can be reduced. In particular, if the charging current and the voltage value of the battery are wirelessly sent to the charging station and the frequency of the supplied power is changed in response to this signal, efficient charging suitable for the charging characteristics of the battery can be performed. Therefore,
It is effective when applied to the charging of electric vehicles.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明方法のブロック説明図である。FIG. 1 is a block diagram of a method of the present invention.

【図２】本発明方法により充電を行った場合の電流，電
圧の変化を示したグラフである。FIG. 2 is a graph showing changes in current and voltage when charging is performed by the method of the present invention.

【符号の説明】[Explanation of symbols]

１ 周波数変換器 ２ コネクタ ３ 整流器 ４ バ
ッテリー ５ 充電コントローラ1 Frequency converter 2 Connector 3 Rectifier 4 Battery 5 Charge controller

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 非接触コネクタを具える充電ステーショ
ンから電磁誘導により電力をバッテリーに供給するイン
ダクティブ充電方法において、 供給電力の周波数を調整することにより、充電の前半部
を定電流充電とし、後半部を定電圧充電とすることを特
徴とするインダクティブ充電方法。1. An inductive charging method for supplying power to a battery by electromagnetic induction from a charging station having a non-contact connector, wherein the first half of charging is constant current charging and the second half is adjusted by adjusting the frequency of the supplied power. Is a constant voltage charging method. 【請求項２】 バッテリー側の充電コントローラから無
線によりバッテリーの充電電圧、電流値を充電ステーシ
ョンに送信し、この信号に対応して、供給する電力の周
波数を変化させることを特徴とする請求項１記載のイン
ダクティブ充電方法。2. The charging controller on the battery side wirelessly transmits the charging voltage and the current value of the battery to the charging station, and the frequency of the electric power to be supplied is changed in response to this signal. The described inductive charging method.
JP7087529A 1995-03-20 1995-03-20 Inductive charging method Pending JPH08265986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7087529A JPH08265986A (en) 1995-03-20 1995-03-20 Inductive charging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7087529A JPH08265986A (en) 1995-03-20 1995-03-20 Inductive charging method

Publications (1)

Publication Number Publication Date
JPH08265986A true JPH08265986A (en) 1996-10-11

Family

ID=13917532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7087529A Pending JPH08265986A (en) 1995-03-20 1995-03-20 Inductive charging method

Country Status (1)

Country Link
JP (1) JPH08265986A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009273327A (en) * 2008-05-10 2009-11-19 Sanyo Electric Co Ltd Battery built-in apparatus and charging cradle
JP2010233364A (en) * 2009-03-27 2010-10-14 Nissan Motor Co Ltd Power supply device
CN103280870A (en) * 2013-05-09 2013-09-04 北京航空航天大学 Electric automobile non-contact charging load self-adaption matching device and control method
JP2015149803A (en) * 2014-02-05 2015-08-20 国立大学法人埼玉大学 Non-contact power supply system, non-contact power supply method and secondary battery charging method
JP2016086472A (en) * 2014-10-23 2016-05-19 株式会社ダイヘン Dc power supply device and dc power supply method
US9887568B2 (en) 2010-02-12 2018-02-06 Semiconductor Energy Laboratory Co., Ltd. Moving object, wireless power feeding system, and wireless power feeding method
JP2018085925A (en) * 2011-06-27 2018-05-31 オークランド ユニサービシズ リミテッドＡｕｃｋｌａｎｄ Ｕｎｉｓｅｒｖｉｃｅｓ Ｌｉｍｉｔｅｄ Load control for bi-directional inductive power transfer system
US11024895B2 (en) 2017-10-17 2021-06-01 Toyota Jidosha Kabushiki Kaisha Charging apparatus for lithium-ion secondary battery and method for charging and discharging lithium-ion secondary battery

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009273327A (en) * 2008-05-10 2009-11-19 Sanyo Electric Co Ltd Battery built-in apparatus and charging cradle
JP2010233364A (en) * 2009-03-27 2010-10-14 Nissan Motor Co Ltd Power supply device
US9887568B2 (en) 2010-02-12 2018-02-06 Semiconductor Energy Laboratory Co., Ltd. Moving object, wireless power feeding system, and wireless power feeding method
JP2018085925A (en) * 2011-06-27 2018-05-31 オークランド ユニサービシズ リミテッドＡｕｃｋｌａｎｄ Ｕｎｉｓｅｒｖｉｃｅｓ Ｌｉｍｉｔｅｄ Load control for bi-directional inductive power transfer system
CN103280870A (en) * 2013-05-09 2013-09-04 北京航空航天大学 Electric automobile non-contact charging load self-adaption matching device and control method
JP2015149803A (en) * 2014-02-05 2015-08-20 国立大学法人埼玉大学 Non-contact power supply system, non-contact power supply method and secondary battery charging method
JP2016086472A (en) * 2014-10-23 2016-05-19 株式会社ダイヘン Dc power supply device and dc power supply method
US11024895B2 (en) 2017-10-17 2021-06-01 Toyota Jidosha Kabushiki Kaisha Charging apparatus for lithium-ion secondary battery and method for charging and discharging lithium-ion secondary battery

Similar Documents

Publication Publication Date Title
CN105322663B (en) Non-contact power transmission system
CN106451815A (en) Power transmitting device and wireless power transmission system
JP5826547B2 (en) Power supply side equipment and resonance type non-contact power supply system
JP3631112B2 (en) Non-contact charging device and mobile phone
JP4478729B1 (en) Resonant non-contact charging device
CN102884705B (en) Power reception equipment for resonance-type non-contact power supply system
EP0953472A3 (en) Control system to maintain battery charge state in a hybrid vehicule
US20130057082A1 (en) Non-contact power reception system and non-contact power transmission system
WO2011142417A1 (en) Resonance-type non-contact power supply system, and adjustment method for matching unit during charging of resonance-type non-contact power supply system
CN103370849A (en) Non-contact power receiving apparatus, vehicle having the non-contact power receiving apparatus mounted therein, non-contact power supply equipment, method for controlling non-contact power receiving apparatus, and method for controlling non-contact
CA2217726A1 (en) Traction battery charging with inductive coupling
EP0963027A3 (en) Vehicle AC generator control system
JP6896182B2 (en) Power converter
CN106233575A (en) Contactless power supply device, contactless current-collecting device and non-contact power supply system
US20220097565A1 (en) Vehicle
JPH08265986A (en) Inductive charging method
EP3694079B1 (en) Wireless power transfer systems for electric vehicles
EP1084729A3 (en) Iontophoresis system
JPH06253461A (en) Charging system for electric vehicle
CN113036945A (en) Wireless charging circuit and wireless charging system
US11535231B2 (en) Vehicle
JP2000184606A (en) Charging current control method and device of noncontact charger
JP3885771B2 (en) Power system
JP7236949B2 (en) electric vehicle
JPS6434900U (en)