JPH10215530A - Non-contact power transmission device - Google Patents

Non-contact power transmission device

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Publication number
JPH10215530A
JPH10215530A JP9014118A JP1411897A JPH10215530A JP H10215530 A JPH10215530 A JP H10215530A JP 9014118 A JP9014118 A JP 9014118A JP 1411897 A JP1411897 A JP 1411897A JP H10215530 A JPH10215530 A JP H10215530A
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JP
Japan
Prior art keywords
side member
non
power transmission
power
feeding side
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
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JP9014118A
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Japanese (ja)
Inventor
Hideaki Abe
Hiroyasu Kitamura
浩康 北村
秀明 安倍
Original Assignee
Matsushita Electric Works Ltd
松下電工株式会社
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Publication date
Application filed by Matsushita Electric Works Ltd, 松下電工株式会社 filed Critical Matsushita Electric Works Ltd
Priority to JP9014118A priority Critical patent/JPH10215530A/en
Publication of JPH10215530A publication Critical patent/JPH10215530A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To promote safety in power transmission because non-contact power transmission operation from a power supply member is not made to a member other than a power supplied member corresponding thereto.
SOLUTION: A non-contact power transmission device is equipped with a power supply member 1, having a primary coil 2 to which power is applied, and a power supplied member 3 having a secondary coil 4 capable of loading and unloading to the power supply member 1 and put in the magnetic field with the primary coil 2 in the case it is loaded to the power supply member 1. The power supply member 1 detects the loading of the power supplied member 3 to the power supply member 1 and is equipped with a load detection control circuit 13 for starting a non-contact power transmission to the power supplied member 3. Non-contact power transmission operation is not made under a state such that the power supplied member 3 as a normal load is not loaded.
COPYRIGHT: (C)1998,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は給電側部材に設けられて電力が加えられる誘導コイルと、被給電側部材に設けられて誘導コイルが発生する磁界内におかれる被誘導コイルとからなる非接触電力伝送装置に関するものである。 The present invention relates consists of an induction coil power is applied is provided to the feeding side member, and the induction coil placed in the magnetic field of the induction coil provided on the feeding side member occurs non it relates contact power transmission apparatus.

【0002】 [0002]

【従来の技術】非接触電力伝送装置は、一次コイルに高周波を加えることで発生させた磁界内に二次コイルを位置させて、二次コイルに電磁誘導によって電力を伝達するものであり、一次コイルと二次コイルとの間には絶縁物を介在させることができるために充電部を外部に露出させることなく電力を伝達することができることから、 BACKGROUND OF THE INVENTION Non-contact power transmission apparatus, by positioning a secondary coil in a magnetic field generated by applying a high frequency to the primary coil, which transmits power by electromagnetic induction in the secondary coil, the primary between the coil and the secondary coil since it is possible to transmit the power without exposing the charged portion to the outside in order to be able to interpose an insulator,
防水構造が必要とされるものにおいて好適に用いることができる。 Can be suitably used in those waterproof structure is required.

【0003】一例を図26に示す。 [0003] An example in FIG. 26. 被給電側部材3は防水型電気かみそりであり、モータ駆動回路に電源を供給する二次電池30には整流器を介して二次コイル4が接続されている。 The power feeding side member 3 is a waterproof electric shaver, the battery 30 supplies power to the motor driving circuit the secondary coil 4 through the rectifier is connected. 一方、給電側部材1は商用電源を整流平滑して得た直流から高周波を生成するインバータ11とこの高周波が印加される一次コイル2とを内蔵するもので、給電側部材1上に被給電側部材3が置かれて一次コイル2と二次コイル4とが対向し、給電側部材1から被給電側部材3への非接触電力伝送によって、二次電池3 On the other hand, the power feeding side member 1, there is a built-in primary coil 2 which the high frequency is applied an inverter 11 for generating a high frequency from a direct current commercial power obtained by rectifying and smoothing, the feeding side on the power supply side member 1 member 3 is placed to face the primary coil 2 and the secondary coil 4, the contactless power transmission from the power feeding side member 1 to the power-supplied side member 3, the secondary battery 3
0の充電がなされる。 Charging of 0 is made. 給電側部材3が充電器を構成するようになっているわけである。 Feeding side member 3 is not is adapted to configure the charger.

【0004】 [0004]

【発明が解決しようとする課題】ところで、従来のこの種の電力伝送装置では、給電側部材1が電源に接続された状態では、一次コイル2に高周波電流が常時供給されていたことから、図27に示すように、金属異物7が一次コイル2の近接位置に置かれると、金属異物には磁束の鎖交によってうず電流が流れて誘導加熱状態になり、 [SUMMARY OF THE INVENTION Incidentally, since the conventional in this type of power transmission device, in a state where the feeding side member 1 is connected to a power source, a high-frequency current was supplied continuously to the primary coil 2, FIG. as shown in 27, the metal foreign object 7 is placed in position near the primary coil 2 becomes the induction heating state eddy current flows by interlinking of the magnetic flux in the metal foreign substance,
急激に発熱することになり、きわめて危険である。 Will be rapidly generates heat, is extremely dangerous.

【0005】本発明はこのような点に鑑み為されたものであり、その目的とするところは対応する被給電側部材以外に対しては給電側部材からの非接触電力伝送動作がなされず、安全性が高い非接触電力伝送装置を提供するにある。 [0005] The present invention has been made in view of these points, the non-contact power transmission operation from the feeding side member for the non-power-supplied side member is not made to the corresponding and it is an object to provide a highly safe non-contact power transmission apparatus.

【0006】 [0006]

【課題を解決するための手段】しかして本発明は、電力が加えられる一次コイルを備えた給電側部材と、該給電側部材に対して着脱自在であり且つ給電側部材への装着時に上記一次コイルによる磁界内におかれる二次コイルを備えている被給電側部材とからなる非接触電力伝送装置において、給電側部材は被給電側部材の給電側部材への装着を検出して被給電側部材への非接触電力伝送を開始させる負荷検出制御回路を備えていることに特徴を有している。 Thus the present invention SUMMARY OF] includes a feeding side member power is provided with a primary coil to be added, is detachable with respect to the power feeding side member and said primary during attachment to the feeding side member the non-contact power transmission apparatus comprising a power-supplied side member and a secondary coil placed in the magnetic field of the coil, the power feeding side member detects the mounting of the feeding side member of the power-supplied side member the feeding side It is characterized in that it comprises a load detection control circuit for starting the non-contact power transmission to the member. 正規負荷としての被給電側部材が装着されていない状態では非接触電力伝送動作がなされないようにしたものである。 In a state where the feeding side member is not mounted as a regular load are those non-contact power transmission operation is prevented been made.

【0007】この時の非接触電力伝送の開始は、給電側部材の間欠発振状態から連続発振状態への切り換えで行うようにすると、負荷検出動作が容易となり、特に間欠発振時における被給電側部材の非線形素子等による微弱ノイズの検出で被給電側部材の装着を検出すると構成が簡単ですむものとなる。 [0007] start of the non-contact power transmission at this time, when to perform the intermittent oscillation state of the power-side member in switching to the continuous oscillation state, the load detecting operation is facilitated, in particular the power-supplied side member during intermittent oscillation configured to detect the mounting of the feeding side member is assumed that requires a simple detection of weak noise due to the non-linear element or the like. 負荷検出制御回路が専用の発振手段と受信手段とを備えているものとしてもよく、この場合、発振手段と受信手段とを共に給電側部材に設けても、発振手段は被給電側部材に、受信手段は給電側部材に設けてもよい。 May be as the load detection control circuit and a receiving means and a dedicated oscillation means, in this case, be provided in both the power feeding side member and a receiving means and oscillation means, oscillating means for the power-supplied side member, receiving means may be provided on the feeding side member.

【0008】被給電側部材に発振手段を設ける時には、 [0008] When providing the oscillating means to the power-supplied side member,
発振手段は給電側部材からの非接触電力伝送によって電源を得るようにするとよく、この場合、被給電側部材の発振手段からの信号を給電側部材の受信手段が検出して非接触電力伝送を継続状態とするとよい。 Oscillation means may if so as to obtain power by non-contact power transmission from the power feeding side member, in this case, the receiving means detects a non-contact power transmission of a signal feeding side member from the oscillation means of the feeding side member it is preferable to a continuation state. 被給電側部材の発振手段と給電側部材の受信手段とは情報の相互授受を行うものであってもよい。 The oscillating means of the feeding side member and the receiving means of the feeding side member may perform the mutual exchange of information.

【0009】また、被給電側部材の給電側部材への装着を検出するスイッチを併用してもよい。 Further, it may be used in combination switch for detecting mounting of the feeding side member of the power-supplied side member. 負荷検出制御回路が具備するアンテナは、一次コイルを利用してもよい。 Antenna load detection control circuit comprises may utilize primary coil. また負荷検出制御回路のアンテナは電力伝送用コイルの発生磁界の誘導を受けない位置に配しておくこと、 The antenna of the load detection control circuit to keep disposed at a position not subjected to induction of the magnetic field generated power transmission coil,
たとえばコイルアンテナを電力伝送用コイルの作る磁力線ループの外側または内側に設けておくことが好ましい。 For example, it is preferably provided on the outside or inside of the magnetic field lines loop making coil antenna power-transmission coil. コイルアンテナを電力伝送用コイルの作る磁力線と平行な面に設けてもよい。 The coil antenna may be provided in a plane parallel to the magnetic field lines to make the power transmission coil.

【0010】 [0010]

【発明の実施の形態】本発明の実施の形態の一例について説明すると、図1において、直流電源10から高周波電流を生成して一次コイル2に印加するインバータ11 DETAILED DESCRIPTION OF THE INVENTION Referring to an example embodiment of the present invention, the inverter 11 is applied in FIG. 1, and generates a high-frequency current to the primary coil 2 from the DC power source 10
には、該インバータ11を間欠的に作動させることになる間欠発振制御回路12が接続されている。 The intermittent oscillation control circuit 12 which will be intermittently actuate the inverter 11 is connected. また、一次コイル2におけるコアに巻かれたアンテナコイル17を備えた負荷検出回路13を備えており、該負荷検出回路13の出力で間欠発振制御回路12の動作が切り換えられるようになっている。 Also, so that has a load detecting circuit 13 which includes an antenna coil 17 wound around the core in the primary coil 2, the operation of the intermittent oscillation control circuit 12 with the output of the load detecting circuit 13 is switched. 図中3は二次コイル4を内蔵して非接触電力伝送で送られてきた電力で二次電池30の充電を行う被給電側部材である。 Figure 3 is a power-supplied side member which charges the secondary battery 30 with electric power sent in a non-contact power transmission incorporates a secondary coil 4.

【0011】この非接触電力伝送装置においては、常時は間欠発振制御回路12の制御により、インバータ11 [0011] With this in the non-contact power transmission apparatus is normally controlled intermittent oscillation control circuit 12, the inverter 11
は図3に示すように間欠的に高周波電流を一次コイル2 Is intermittently primary coil a high-frequency current 2 3
に印加している。 It has been applied to. 図3中のイは無負荷または異物負荷の期間を、ロは正規負荷が接続された期間を示している。 B in FIG. 3 the duration of the no-load or a foreign matter load, b indicates the period in which normal load is connected.
なお、間欠発振時における一次コイル2に高周波を加えている時間は、高周波を加えていない時間よりも図3で示す期間よりもかなり短くしておくことが好ましく、上記両時間の比は図に示すものに限るものではない。 The time that the addition of high-frequency to the primary coil 2 at the time of the intermittent oscillation, it is preferable to keep considerably shorter than the period shown in FIG. 3 than the time without added high frequency, the ratio of both time in FIG. not limited to those shown.

【0012】ここで、正規の被給電側部材3が給電側部材1に装着されていない時、つまり無負荷であったり金属異物が置かれている状態では、負荷検出回路13での検出回路信号Vsがほとんど現れないのに対して、正規の被給電側部材3が装着された時には、被給電側部材3 [0012] Here, when the power feeding side member 3 of the normal is not attached to the feeding side member 1, i.e. in the state in which the metal foreign substance or a no load is placed, the detection circuit signal in the load detecting circuit 13 whereas Vs almost no, when the power feeding side member 3 of the normal is attached, the power-supplied side member 3
側における整流ダイオードなどの非線形素子等から高調波成分として微弱なノイズが発生する。 Weak noise is generated as a harmonic component from the non-linear element or the like, such as the rectifier diode in the side. このノイズをアンテナコイル17を通じて負荷検出回路13に高周波交流としての検出回路信号Vsが流れることから、これを検出して間欠発振制御回路12に出力することで、インバータ11を連続発振状態に移行させる。 The noise from the flow detector signal Vs as a high-frequency alternating current to the load detecting circuit 13 through the antenna coil 17, that detects and outputs this to the intermittent oscillation control circuit 12 shifts the inverter 11 to the continuous oscillation state . つまり、正規の被給電側部材3が接続されていない時には、間欠発振がなされるだけであるが、正規の被給電側部材3が接続されたならば、これを検出して連続発振動作に移ることで非接触電力伝送動作を開始するものである。 That is, when the power feeding side member 3 of the normal is not connected, but only intermittent oscillation is performed, if the power-supplied side member 3 of the normal is connected, the process proceeds to a continuous oscillation operation detects this it is to start the contactless power transmission operation by. 図2に上記動作のフローチャートを示す。 It shows a flowchart of the operation in FIG.

【0013】図4は上記アンテナコイル17を電力伝送用の一次コイル2で兼用するとともに、負荷検出回路1 [0013] Figure 4 as well as serves the antenna coil 17 in the primary coil 2 for power transmission, load detection circuit 1
3を一次コイル2間の電圧から入力されるようにしたものを示しており、また図5はアンテナコイル17を電力伝送用の一次コイル2で兼用するとともに、負荷検出回路13をインバータ11におけるスイッチング素子の電圧から入力されるようにしたものを示している。 3 shows what was to be inputted from the voltage across the primary coil 2, also in conjunction with FIG. 5 also serves as a antenna coil 17 in the primary coil 2 for power transmission, switching the load detecting circuit 13 in the inverter 11 It shows those to be input from the voltage of the device. いずれにしても、負荷検知動作は非接触電力伝送動作中も継続して行い、正規の被給電側部材3が外された時には非接触電力伝送動作を中断し、再度間欠発振動作に移行する。 Anyway, the load detecting operation performed continuously even during the non-contact power transmission operation, when the power-supplied side member 3 of the normal is detached to interrupt the non-contact power transmission operation, shifts to an intermittent oscillation operation again. 上記間欠発振動作に代えて、給電側部材1の電源スイッチを投入した時点でインバータ11が短時間作動して上記の負荷検知動作を行い、適合負荷が接続されていないことを検知した場合は、再度電源スイッチを投入しなおさない限り上記負荷検知動作を行わないようにしたものであってもよい。 Instead of the intermittent oscillation operation, the inverter 11 at the time of turning on the power switch of the power supply-side member 1 is actuated briefly perform the above load detecting operation, if the adapted load detects that it is not connected, may be such that is not performed the load detecting operation unless re power switch again.

【0014】図6に他の実施の形態の一例を示す。 [0014] An example of another embodiment in FIG. ここでは給電側部材1に信号発振回路15と発振用のアンテナコイル16と受信用アンテナコイル17と負荷検出回路13とを設けている。 Here it is provided with signal oscillation circuit 15 to the feeding side member 1 and the antenna coil 16 of the oscillation and the receiving antenna coil 17 and the load detection circuit 13. 信号発振回路15は図7に示す信号発振出力Vhをアンテナコイル16に加えており、 Signal oscillating circuit 15 is added to the signal oscillation output Vh shown in FIG. 7 to the antenna coil 16,
このために正規の被給電側部材3が接続されていない無負荷時であれば負荷検出回路13には所定レベル以上の検出回路信号Vsが流れていることから、インバータ1 Since flowing the predetermined level or more detection circuit signal Vs to the load detecting circuit 13 if no load to the power-supplied side member 3 of the normal is not connected to the inverter 1
1を停止させているが、正規の被給電側部材3が装着された時には、検出回路信号Vsは所要の減衰が生じたものとなるために、これを検出して起動停止回路14を介してインバータ11を起動させて非接触電力伝送動作に移行させる。 1 but is stopped and when the power feeding side member 3 of the normal is mounted, the detection circuit signal Vs in order to be those required attenuation occurs through the start-stop circuit 14 which detects and the inverter 11 is activated to shift to the non-contact power transmission operation. また、金属異物などがおかれた時には、検出回路信号Vsは正規の負荷の場合よりもさらに減衰が生じたものとなるために、インバータ11を停止させたままとする。 Further, when a metal foreign object is placed, the detection circuit signal Vs in order to becomes further attenuated than in the normal load is generated, which remains the inverter 11 is stopped. 図8に示すように、アンテナコイル16が発振用と受信用とを兼用するようにしてもよい。 As shown in FIG. 8, the antenna coil 16 may be combined and for receiving the oscillation.

【0015】インバータ11は正規の被給電側部材3が装着されていない時には全く作動しないために、前記の実施の形態のものよりもさらに安全性が高くなるものであり、また信号発振回路15がアンテナコイル16を通じて出力する信号Vhは微弱なものでよいために、非接触電力伝送動作を行っていない時の電力消費を抑えることができる。 [0015] Inverter 11 is in order not to work at all when the power-supplied side member 3 of the normal is not attached, the are those higher is more secure than that of the embodiment, also the signal oscillator circuit 15 signal Vh that is output through the antenna coil 16 to be ones weak, it is possible to reduce power consumption when not subjected to non-contact power transmission operation.

【0016】図9に別の実施の形態の一例を示す。 [0016] An example of another embodiment in FIG. ここでは被給電側部材3に信号発振回路32と発振用アンテナコイル33とを設けるとともに、二次コイル4を通じて非接触電力伝送で受ける電力から信号発振回路32に電源を供給する電源部31を設けている。 Together here provided a signal oscillator circuit 32 to the power-supplied side member 3 and the oscillating antenna coil 33 is provided with a power supply unit 31 supplies power from the power signal oscillating circuit 32 which receives a non-contact power transmission through the secondary coil 4 ing. また給電側部材1には図1で示したものと同様に負荷検出回路13と間欠発振制御回路12とを設けている。 Further are provided a load detection circuit 13 and the intermittent oscillation control circuit 12 similar to those shown in FIG. 1 the feeding side member 1.

【0017】図11に示すように、正規の被給電側部材3が接続されていない時には、給電側部材1のインバータ11の間欠発振動作によっても負荷検出信号Vsは流れなかったり正規のものとはならないが、被給電側部材3が接続されている時には上記インバータ11の間欠発振動作時の非接触電力伝送で被給電側部材3の信号発振回路32が作動して特定周波数の信号Vhを発振するために、所定の負荷検出信号Vsが給電側部材1で得られることになり、このためにインバータ11は連続発振動作に移行して非接触電力伝送を行う。 As shown in FIG. 11, when the power feeding side member 3 of the normal is not connected, the load detection signal Vs by intermittent oscillation of the power feeding side member 1 of the inverter 11 and the normal or not flow ones not do it, the signal oscillator circuit 32 of the power supply-side member 3 in a non-contact power transmission in the intermittent oscillation operation of the inverter 11 oscillates a signal Vh of a specific frequency in operation when being connected to the feeding side member 3 Therefore, the results in the predetermined load detection signal Vs is obtained at the feed side member 1, the inverter 11 performs non-contact power transmission shifts to a continuous oscillation operation for this. 図10は上記動作のフローチャートである。 Figure 10 is a flow chart of the operation.

【0018】この場合、信号発振回路32が出力する信号Vhを被給電側部材3固有の識別信号を含むものとすることで、より高精度な正規負荷接続状態の検出を行うことができるものとなる。 [0018] In this case, becomes capable of performing signal oscillator 32 is a signal Vh that is output by intended to include the power-supplied side member 3 unique identification signal, more accurate detection of the normal load connection status. また、給電側部材1と被給電側部材2との間で情報の送受を行えるようにしておくことで、単なる負荷検出だけでなく、より高機能な制御を実現することができる。 Moreover, by leaving the allow transmission and reception of information between the feeding side member 1 and the feed-side member 2, not just the load detection, it is possible to realize a more sophisticated control.

【0019】図12にさらに別の実施の形態の一例を、 [0019] An example of a further embodiment in FIG. 12,
図13にその動作のフローチャートを示す。 Figure 13 shows a flowchart of its operation. ここでは被給電側部材3に磁石6を設けるとともに、給電側部材1 Together here provided a magnet 6 to the power-supplied side member 3, the power feeding side member 1
に負荷検出のためのものとしてマグネットスイッチ5を設けており、また両部材1,3に夫々相互に情報の授受を行うための受発信回路18,34を設けている。 And it has provided a magnet switch 5, also the receiver and transmitter circuits 18, 34 for exchanging information on the respective mutually both members 1,3 provided as for load detection. 被給電側部材3が給電側部材1に装着されると磁石6によるマグネットスイッチ5のオンでインバータ11が作動して、被給電側部材3への非接触電力伝送が開始される。 Operating the inverter 11 is on the magnet switch 5 according to the power-supplied side member 3 is attached to the feeding side member 1 magnet 6, the non-contact power transmission to the power-supplied side member 3 is started.
そして被給電側部材3の受発信回路34と給電側部材1 Then the transceiving circuit 34 of the power feeding side member 3 feeding side member 1
の受発信回路18との間で情報信号の送受が行われるものであり、この時、受発信回路18が本来の信号を受信できなかった場合には発信制御回路12を通じてインバータ11を停止させて、非接触電力伝送動作を中止する。 Are those transmission and reception of data signals from and to the transceiving circuit 18 is carried out, this time, the inverter 11 is stopped through the transmitter control circuit 12 when the transceiving circuit 18 can not receive the original signal It stops the non-contact power transmission operation. マグネットスイッチ5が磁気を帯びた異物で作動してしまっても、非接触電力伝送動作を続けることがないことから、安全性の高いものを得ることができる。 Even magnet switch 5 is accidentally operated in foreign material magnetized, since it is not to continue the non-contact power transmission operation, it is possible to obtain a higher safety.

【0020】一次コイル2と受信用もしくは発振用のアンテナコイル16との配置については、図14に示すように、一次コイル2に電流を流した場合に生じる磁力線がアンテナコイル16を通るとアンテナコイル16は本来の負荷検出信号Vsに重畳される電圧を出力してしまうことになり、負荷検出信号Vsの検出が困難となる。 The arrangement of the primary coil 2 and the antenna coil 16 for reception or oscillation, as shown in FIG. 14, the magnetic field lines generated when a current flows to the primary coil 2 passes through the antenna coil 16 antenna coil 16 will be thereby outputting a voltage to be superimposed on the original load detection signal Vs, it is difficult to detect the load detection signal Vs.
このために、図16に示すように、アンテナコイル16 For this, as shown in FIG. 16, the antenna coil 16
は磁力線ループの外側に配置したり、あるいは図17に示すように、磁力線ループの内側に配置するとよい。 Or arranged outside of the magnetic field lines loop, or, as shown in FIG. 17, may be arranged inside the magnetic field lines loop. 電力伝送用のコイル2,4のつくる磁束変化が相殺されるために、アンテナコイル16は本来の負荷検出信号Vs For magnetic flux change to make the coils 2 and 4 for the power transmission is canceled, the antenna coil 16 is the original load detection signal Vs
のみを受信(発信)することができる。 You can receive only (outgoing). 図中20及び4 Figure 20 and 4
0はコアである。 0 is the core.

【0021】図18に示すように、一次コイル2及び二次コイル4の軸方向とアンテナコイル16の軸方向とが直交するようにアンテナコイル16を配置して、コイル2,4が作る磁力線と平行な面にアンテナコイル16を位置させてもよい。 As shown in FIG. 18, by arranging the antenna coil 16 so that the axial directions are perpendicular to the primary coil 2 and the secondary coil 4 in the axial direction and the antenna coil 16, the magnetic field lines coils 2 and 4 make it may be located in the antenna coil 16 in a plane parallel. 電力伝送用コイル2,4で生ずる磁力線の影響をアンテナコイル16が受けることがなくなる。 The antenna coil 16 the influence of the magnetic field lines generated by the power transmission coil 2 and 4 it is not necessary to receive.

【0022】また図19は非接触電力伝送用コイル2 [0022] Figure 19 is a non-contact power transmission coil 2
4,24のコア20,40がCC型を構成している場合の発振用及び受信用のアンテナコイル17,16の配置を磁力線ループの外側とした場合を、図20はアンテナコイル33,16の配置を磁力線ループの外側とした場合を示しており、図21は非接触電力伝送用コイル2 The case where the arrangement of the oscillation and the antenna coil 17 and 16 for reception in the case where the core 20, 40 of 4, 24 constitute the CC type was outside the magnetic field lines loop, Figure 20 is an antenna coil 33,16 arrangement shows the case of the outer magnetic field lines loop, Figure 21 is a non-contact power transmission coil 2
4,24のコア20,40がCI型を構成している場合のアンテナコイル33,16の配置を磁力線ループの外側とした場合を示している。 The core 20, 40 of 4, 24 indicates a case where the arrangement of the antenna coil 33,16 when constituting the CI-type and the outer magnetic field lines loop.

【0023】さらに図22は円筒型コアを有する一次コイル2及び空芯コイルである二次コイル4の軸方向とアンテナコイル16,33の軸方向とが直交して、コイル2,4の作る磁力線と平行な面にアンテナコイル16, Furthermore Figure 22 is perpendicular to the axial direction of the axial direction and the antenna coil 16, 33 of the secondary coil 4 is the primary coil 2 and the air-core coil having a cylindrical core, the magnetic field lines to make the coil 2 and 4 the antenna coil 16 in a plane parallel to the,
33が位置するように、またアンテナコイル16,33 33 so as to be located, also the antenna coil 16 and 33
の軸方向が同一となるようにアンテナコイル16,33 The antenna coil so that the axis direction is the same 16 and 33
を配置した場合を示している。 It shows the case of arranging the.

【0024】図23はCC型コア20,40の各脚片にコイル2,4を巻回したものにおいて、コイル2,4による磁力線ループの外側にアンテナコイル33,16を配置したものを、図24はポットコア側のコア20,4 FIG. 23 is in that wound coils 2,4 in each leg of the CC type core 20, 40, those disposed an antenna coil 33,16 to the outside of the magnetic field lines loop by the coil 2 and 4, FIG. 24 is the core of the pot core side 20,4
0を有するコイル2,4で非接触電力伝送を行うものにおいて、コア20,40の外側に、つまりコイル2,4 In which performs non-contact power transmission coil 2 and 4 with a 0, on the outside of the core 20, 40, i.e. the coils 2 and 4
による磁力線ループの外側にアンテナコイル33,16 The antenna coil on the outside of the magnetic field lines loop according 33,16
を配置したものを示している。 It shows that arranged. さらに図25はEE型のコア20,40を備えたコイル2,4による磁力線ループの外側にアンテナコイル33,16を配置したものを示している。 Further Figure 25 shows what you place an antenna coil 33,16 to the outside of the magnetic field lines loop by the coil 2 and 4 having the EE type core 20, 40.

【0025】 [0025]

【発明の効果】以上のように本発明においては、被給電側部材の給電側部材への装着を検出して被給電側部材への非接触電力伝送を開始させる負荷検出制御回路を給電側部材に設けて正規負荷としての被給電側部材が装着されていない状態では非接触電力伝送動作がなされないようにしていることから、金属異物が給電側部材の一次コイル近辺に位置しても金属異物が加熱されてしまうことがなくて安全性が高いものである。 In the present invention as described above, according to the present invention, the power feeding side member the load detection control circuit detects the mounting of the feeding side member to start the contactless power transmission to the power-supplied side member of the feeding side member regular in a state where the feeding side member is not mounted as a load from the non-contact power transmission operation is prevented done, metals metal foreign object is positioned near the primary coil of the power feeding side member foreign substance provided There are those high safety without that it would be heated.

【0026】この時の非接触電力伝送の開始は、給電側部材の間欠発振状態から連続発振状態への切り換えで行うようにすると、つまりは間欠発振時に負荷検出を行うと、負荷検出動作が容易に且つ定期的に行うことができる。 The start of the non-contact power transmission at this time, when to perform the intermittent oscillation state of the power-side member in switching to the continuous oscillation state, that is, performs the load detection during the intermittent oscillation, facilitates load detection operation and it can be carried out regularly to. 特に間欠発振時における被給電側部材の非線形素子等による微弱ノイズの検出で被給電側部材の装着を検出すると構成が簡単ですむものとなる。 Particularly as those configured to detect the mounting of the feeding side member at the detection of weak noise due to the non-linear element or the like of the feeding side member it simpler during intermittent oscillation.

【0027】負荷検出制御回路が専用の発振手段と受信手段とを備えているものとしてもよく、この場合、より正確な負荷検出を行うことができる。 [0027] may be that the load detection control circuit and a receiving means and a dedicated oscillation means, in this case, it is possible to perform a more accurate load detection. そして上記発振手段と受信手段とを共に給電側部材に設けた時には、一次コイルに間欠的に電流を流す必要がなくなることから、 And a receiving means and said oscillating means when both provided on the feeding side member, since the need to flow intermittently current to the primary coil is eliminated,
被給電側部材が装着されていない時の消費電流を下げることができる。 It can be reduced consumption current when the power feeding side member is not mounted.

【0028】また発振手段を被給電側部材に、受信手段は給電側部材に設けてもよく、この場合は適応する被給電側部材の装着のみを確実に検出することができるものとなる。 Further the oscillating means to the power-supplied side member, the receiving means may be provided to the feeding side member, this case is that it is possible to reliably detect only the attachment of the power feeding side member to accommodate. 被給電側部材に発振手段を設ける時には、発振手段は給電側部材からの非接触電力伝送によって電源を得るようにすると、被給電側部材に電池電源を設ける必要がなくて、電池電源の消耗による検出不良を招くことがなくなる。 When providing the oscillating means to the power-supplied side member, the oscillation means so as to obtain power by non-contact power transmission from the power feeding side member, without the need to provide a battery power source to the power-supplied side member, by consumption of the battery power supply it is not necessary to lead to a detection failure. そして被給電側部材の発振手段からの信号を給電側部材の受信手段が検出して非接触電力伝送を継続状態とすることで、電力伝送状態への移行をスムーズに行うことができる。 And by the signal continuity state non-contact power transmission to detect the reception means of the feeding side member from the oscillation means of the feeding side member, it is possible to smoothly shift to the power transmission state.

【0029】被給電側部材の発振手段と給電側部材の受信手段とは情報の相互授受を行うものであってもよい。 [0029] The oscillating means of the feeding side member and the receiving means of the feeding side member may perform the mutual exchange of information.
装着された被給電側部材が適合するものであるかどうかをより正確に判別することができる上に、非接触電力伝送のより細かい制御も可能となる。 On which can be feeding side member mounted to determine whether it is intended to fit more accurately, it is possible finer control of the non-contact power transmission. また、被給電側部材の給電側部材への装着を検出するスイッチを併用してもよい。 It may be used in combination switch for detecting mounting of the feeding side member of the power-supplied side member. 被給電側部材が装着されたかどうかの検出動作をスイッチの作動で行わせることができるために、間欠発振動作や発振手段を常時動作させておく必要がなくなる。 To whether the detection operation the feeding side member is attached can be performed by operation of the switch, it is not necessary to be operated at all times intermittent oscillation or oscillation means.

【0030】負荷検出制御回路が具備するアンテナは、 The antenna load detection control circuit comprises the
一次コイルを利用すると部品数を少なくすることができる。 It is possible to reduce the number of parts Utilizing primary coil. また負荷検出制御回路のアンテナは電力伝送用コイルの発生磁界の誘導を受けない位置に配しておくこと、 The antenna of the load detection control circuit to keep disposed at a position not subjected to induction of the magnetic field generated power transmission coil,
たとえばコイルアンテナを電力伝送用コイルの作る磁力線ループの外側または内側に設けておくことや、あるいはコイルアンテナを電力伝送用コイルの作る磁力線と平行な面に設けておくことで、電力伝送用コイルによる磁界の影響を受けることなく負荷検出を行うことができる。 For example, by preferably provided that preferably provided on the outside or inside of the magnetic field lines loop making coil antenna power-transmission coil and, or a plane parallel to the magnetic field lines to make the coil antenna of the power transmission coil, by the power transmission coil it is possible to perform the load detection without being affected by the magnetic field.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の実施の形態の一例の回路図である。 1 is a circuit diagram of an example of embodiment of the present invention.

【図2】同上の動作を示すフローチャートである。 2 is a flowchart showing the operation of the same.

【図3】同上の動作を示すタイムチャートである。 FIG. 3 is a time chart showing the operation of the same.

【図4】同上の他例の回路図である。 4 is a circuit diagram of another example of the same.

【図5】同上の更に他例の回路図である。 5 is a circuit diagram of yet another example of the same.

【図6】同上の別の例の回路図である。 6 is a circuit diagram of another example of the same.

【図7】同上の動作を示すタイムチャートである。 FIG. 7 is a time chart showing the operation of the same.

【図8】同上の更に別の例の回路図である。 8 is a circuit diagram of a further example; FIG.

【図9】他の実施の形態の一例の回路図である。 9 is an example circuit diagram of another embodiment.

【図10】同上の動作を示すフローチャートである。 10 is a flowchart showing the operation of the same.

【図11】同上の動作を示すタイムチャートである。 FIG. 11 is a time chart showing the operation of the same.

【図12】別の実施の形態の一例を示す回路図である。 Is a circuit diagram showing an example of Figure 12 another embodiment.

【図13】同上の動作を示すフローチャートである。 13 is a flowchart showing the operation of the same.

【図14】電磁誘導用コイルとアンテナコイルとの配置の一例を示す斜視図である。 14 is a perspective view showing an example of arrangement of the electromagnetic induction coil and the antenna coil.

【図15】同上の配置の他例を示す斜視図である。 15 is a perspective view showing another example of arrangement of the same.

【図16】同上の配置の更に他例を示す斜視図である。 16 is a perspective view showing still another example of arrangement of the same.

【図17】同上の配置の別の例を示す斜視図である。 17 is a perspective view showing another example of the arrangement of the same.

【図18】同上の配置の異なる例を示す斜視図である。 18 is a perspective view showing another example of the arrangement of the same.

【図19】同上の配置の更に異なる例を示す斜視図である。 19 is a perspective view showing a further different example of the arrangement of the same.

【図20】同上の配置の他の例を示す斜視図である。 20 is a perspective view showing another example of the arrangement of the same.

【図21】同上の配置の更に他の例を示す斜視図である。 21 is a perspective view showing still another example of the arrangement of the same.

【図22】同上の配置の別の例を示す斜視図である。 22 is a perspective view showing another example of the arrangement of the same.

【図23】同上の配置の更に別の例を示す斜視図である。 23 is a perspective view showing still another example of the arrangement of the same.

【図24】同上の配置の異なる例を示す斜視図である。 24 is a perspective view showing another example of the arrangement of the same.

【図25】同上の配置の更に異なる例を示す斜視図である。 25 is a perspective view showing a further different example of the arrangement of the same.

【図26】電磁誘導型非接触電力伝送装置の一例の概略構成を示す説明図である。 Figure 26 is an explanatory diagram showing a schematic configuration of one example of an electromagnetic induction type non-contact power transmission apparatus.

【図27】同上の問題点を示す説明図である。 FIG. 27 is an explanatory view showing a problem of the same.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 給電側部材 2 一次コイル 3 被給電側部材 4 二次コイル 13 負荷検出回路 1 feeding side member 2 primary coil 3 the feeding member 4 secondary coil 13 load detecting circuit

Claims (14)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 電力が加えられる一次コイルを備えた給電側部材と、該給電側部材に対して着脱自在であり且つ給電側部材への装着時に上記一次コイルによる磁界内におかれる二次コイルを備えている被給電側部材とからなる非接触電力伝送装置において、給電側部材は被給電側部材の給電側部材への装着を検出して被給電側部材への非接触電力伝送を開始させる負荷検出制御回路を備えていることを特徴とする非接触電力伝送装置。 1. A power feeding side member power is provided with a primary coil to be added, it is detachable with respect to the power feeding side member and a secondary coil placed in the magnetic field by the primary coil during attachment to the feeding side member the non-contact power transmission apparatus comprising a power-supplied side member and a power supply-side member initiates the non-contact power transmission to detect installation of the power feeding side member of the power-supplied side member to the power-supplied side member non-contact power transmission apparatus characterized by comprising a load detection control circuit.
  2. 【請求項2】 給電側部材は間欠発振状態から連続発振状態への切り換えで被給電側部材への非接触電力伝送を開始するものであることを特徴とする請求項1記載の非接触電力伝送装置。 2. A feeding side member is non-contact power transmission according to claim 1, characterized in that to start the contactless power transmission to the power-supplied side member in switching from the intermittent oscillating state to a continuous oscillation state apparatus.
  3. 【請求項3】 負荷検出制御回路は間欠発振時における被給電側部材の非線形素子等による微弱ノイズの検出で被給電側部材の装着を検出するものであることを特徴とする請求項2記載の非接触電力伝送装置。 3. A load detection control circuit according to claim 2, characterized in that for detecting the attachment of the power feeding side member at the detection of weak noise due to the non-linear element or the like of the feeding side member during intermittent oscillation non-contact power transmission apparatus.
  4. 【請求項4】 負荷検出制御回路は専用の発振手段と受信手段とを備えていることを特徴とする請求項1または2記載の非接触電力伝送装置。 4. A load detection control circuit non-contact power transmission apparatus according to claim 1, wherein that it comprises a receiving means and a dedicated oscillation means.
  5. 【請求項5】 発振手段と受信手段とが共に給電側部材に設けられていることを特徴とする請求項4記載の非接触電力伝送装置。 5. The non-contact power transmission apparatus according to claim 4, characterized in that the oscillating means and the receiving means are both provided on the feeding side member.
  6. 【請求項6】 発振手段は被給電側部材に、受信手段が給電側部材に設けられていることを特徴とする請求項4 6. The oscillator means to the power-supplied side member, according to claim 4 in which the receiving means, characterized in that it is provided on the feeding side member
    記載の非接触電力伝送装置。 Non-contact power transmission apparatus according.
  7. 【請求項7】 被給電側部材の発振手段は給電側部材からの非接触電力伝送によって電源を得ていることを特徴とする請求項6記載の非接触電力伝送装置。 7. oscillating means of the feeding side member is non-contact power transmission apparatus according to claim 6, characterized in that obtains power by non-contact power transmission from the power feeding side member.
  8. 【請求項8】 被給電側部材の発振手段からの信号を給電側部材の受信手段が検出して非接触電力伝送を継続状態とするものであることを特徴とする請求項7記載の非接触電力伝送装置。 8. The non-contact according to claim 7, characterized in that to signal the persistent state a non-contact power transmission to detect the receiving means of the feeding side member from the oscillation means of the feeding side member power transmission device.
  9. 【請求項9】 被給電側部材の発振手段と給電側部材の受信手段とは情報の相互授受を行うものであることを特徴とする請求項6〜8のいずれかに記載の非接触電力伝送装置。 9. non-contact power transmission according to any one of claims 6-8, characterized in that the receiving means of the oscillating means and the feeding side member of the power-supplied side member performs a mutual exchange of information apparatus.
  10. 【請求項10】 被給電側部材の給電側部材への装着を検出するスイッチを併用していることを特徴とする請求項6〜9のいずれかに記載の非接触電力伝送装置。 10. A non-contact power transmission device according to any one of claims 6-9, characterized in that in combination the switch for detecting the mounting of the feeding side member of the power-supplied side member.
  11. 【請求項11】 負荷検出制御回路はアンテナを具備するとともに、該アンテナとして一次コイルを利用していることを特徴とする請求項1〜10のいずれかに記載の非接触電力伝送装置。 11. The load detection control circuit as well as comprising an antenna, a non-contact power transmission device according to any one of claims 1 to 10, characterized in that by utilizing the primary coil as the antenna.
  12. 【請求項12】 負荷検出制御回路はアンテナを具備するとともに、該アンテナは電力伝送用コイルの発生磁界の誘導を受けない位置に配されていることを特徴とする請求項1〜11のいずれかの項に記載の非接触電力伝送装置。 12. The load detection control circuit as well as comprising an antenna, any one of the preceding claims, said antenna characterized in that it is arranged at a position not subjected to induction of the magnetic field generated power transmission coil non-contact power transmission apparatus according to the section.
  13. 【請求項13】 負荷検出制御回路はコイルアンテナを具備するとともに、該コイルアンテナは電力伝送用コイルの作る磁力線ループの外側または内側に設けていることを特徴とする請求項12記載の非接触電力伝送装置。 13. The load detection control circuit as well as comprising a coil antenna, a contactless power of claim 12, wherein said coil antenna, characterized in that are provided outside or inside the magnetic field lines loop make the power transmission coil transmission equipment.
  14. 【請求項14】 負荷検出制御回路はコイルアンテナを具備するとともに、該コイルアンテナは電力伝送用コイルの作る磁力線と平行な面に設けていることを特徴とする請求項12記載の非接触電力伝送装置。 14. The load detection control circuit as well as comprising a coil antenna, the coil antenna is non-contact power transmission according to claim 12, characterized in that provided in a plane parallel to the magnetic field lines to make the power transmission coil apparatus.
JP9014118A 1997-01-28 1997-01-28 Non-contact power transmission device Pending JPH10215530A (en)

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