JP2007206776A - Noncontact power transmission apparatus - Google Patents

Noncontact power transmission apparatus Download PDF

Info

Publication number
JP2007206776A
JP2007206776A JP2006021980A JP2006021980A JP2007206776A JP 2007206776 A JP2007206776 A JP 2007206776A JP 2006021980 A JP2006021980 A JP 2006021980A JP 2006021980 A JP2006021980 A JP 2006021980A JP 2007206776 A JP2007206776 A JP 2007206776A
Authority
JP
Japan
Prior art keywords
power transmission
power
hall element
transmission device
power receiving
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.)
Withdrawn
Application number
JP2006021980A
Other languages
Japanese (ja)
Other versions
JP2007206776A5 (en
Inventor
Kentaro Yoda
健太郎 依田
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2006021980A priority Critical patent/JP2007206776A/en
Publication of JP2007206776A publication Critical patent/JP2007206776A/en
Publication of JP2007206776A5 publication Critical patent/JP2007206776A5/ja
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Power Sources (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact power transmission apparatus, capable of constructing a device for recognizing a power receiving unit in a power transmission unit while simplifying the structure on the power receiving unit side and suppressing its manufacturing cost. <P>SOLUTION: In the noncontact power transmission apparatus of the present invention, one power transmission unit 1 can perform power transmission in no contact to two or more kinds of power receiving units 2 by using electromagnetic induction. The power transmission unit 1 recognizes that the power receiving unit 2 is present in a power transmittable range at the time of power transmission, or recognizes the kind or model of the power receiving unit 2 to which power transmission can be performed and performs appropriate power transmission to the power receiving unit 2 based on the recognition result. The recognition of the power receiving unit 2 by the power transmission unit 1 is performed by a combination of at least one Hall element provided in the power transmission unit 1 and at least one magnet provided on the power receiving unit 2 side in conformation to the Hall element. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、電磁誘導を利用して、１次側の送電装置から２次側の受電装置に非接触で電力を伝送する非接触電力伝送装置に関するものである。   The present invention relates to a contactless power transmission device that uses electromagnetic induction to transmit power from a primary power transmission device to a secondary power reception device in a contactless manner.

従来、この種の非接触電力伝送装置では、送電装置から受電装置に対して電力を伝送する際に、送電装置が相手の受電装置を認識する必要があり、その認識のために以下の方法が採用されている。
第１の方法は、電力伝送の際に、送電装置側から電磁波を連続または間欠的に発生させて、受電装置側でそれを受電して消費することで負荷が変動するので、この負荷の変動を送電装置側で検出して認識するものである。 Conventionally, in this type of non-contact power transmission device, when power is transmitted from the power transmission device to the power reception device, the power transmission device needs to recognize the partner power reception device. It has been adopted.
In the first method, during power transmission, the load fluctuates by continuously or intermittently generating electromagnetic waves from the power transmission device side and receiving and consuming it on the power reception device side. Is detected and recognized on the power transmission device side.

第２の方法は、機構的（機械的）なスイッチを用いて、送電装置が受信装置を認識するものである。
第３の方法は、送電装置と受信装置とが無線通信できるようにその機能を両者に持たせ、その無線通信機能を使用することにより、電力伝送の際に、送電装置が受電装置を認識するものである。 In the second method, the power transmission apparatus recognizes the reception apparatus using a mechanical (mechanical) switch.
In the third method, the power transmission apparatus recognizes the power reception apparatus during power transmission by providing both of the functions so that the power transmission apparatus and the reception apparatus can perform wireless communication and using the wireless communication function. Is.

ところが、第１の方法では、その認識の際に、送電装置側が電磁波を出力し続けなければならないという不具合がある。
第２の方法では、機構的なスイッチを用いるので、その認識の際に物理的に接触する必要があるので、故障しやすいなどの不具合がある。
第３の方法では、送電装置および受電装置の双方に無線通信機能を搭載しなければならず、受電装置側の構成が複雑になる上に、その製作コストも嵩むという不具合がある。 However, in the first method, there is a problem in that the power transmission device side must continue to output electromagnetic waves during the recognition.
In the second method, since a mechanical switch is used, it is necessary to make physical contact during the recognition.
In the third method, both the power transmission device and the power reception device have to be equipped with a wireless communication function, so that the configuration on the power reception device side becomes complicated and the manufacturing cost increases.

また、第１および第３の方法では、送電装置に対する受電装置の位置が正常位置からずれていても、受電装置を認識すると送電してしまうという不具合がある。
このような不具合を解決するために、磁石などを活用することが考えられ、その活用例としては例えば特許文献１に記載の技術が知られている。
しかし、特許文献１に記載の技術では、上記のような不具合に対処することができず、その不具合を解消することはできない。
特開平５−１９０２７０号公報 In addition, the first and third methods have a problem that power is transmitted when the power receiving apparatus is recognized even if the position of the power receiving apparatus with respect to the power transmitting apparatus is deviated from the normal position.
In order to solve such a problem, it is conceivable to use a magnet or the like. As an example of the use, for example, a technique described in Patent Document 1 is known.
However, the technique described in Patent Document 1 cannot cope with the above-described problem and cannot solve the problem.
Japanese Patent Laid-Open No. 5-190270

そこで、本発明の目的は、上記の点に鑑み、送電装置が受電装置を認識する装置を構築する場合に、受電装置側の構成を簡略化できる上に、その製造コストを抑制できるようにした非接触電力伝送装置を提供することにある。   Therefore, in view of the above points, an object of the present invention is to simplify the configuration on the power receiving device side and to suppress the manufacturing cost when the power transmitting device constructs a device that recognizes the power receiving device. The object is to provide a non-contact power transmission device.

上記の課題を解決し本発明の目的を達成するために、各発明は、以下のような構成からなる。
すなわち、第１の発明は、１次コイルを含む送電装置と、２次コイルを含む受電装置とからなり、前記１次コイルと前記２次コイルとを電磁的に結合させて、前記送電装置が前記受電装置に対して電力の伝送を行うようになっている非接触電力伝送装置であって、前記送電装置は、少なくとも１つのホール素子を備え、前記受電装置は、前記１次コイルと前記２次コイルとが接近する際に、前記ホール素子と接近する少なくとも１つの磁石を備え、かつ、前記送電装置は、前記ホール素子の出力に基づいて前記受電装置が接近したことを認識するようになっている。 In order to solve the above problems and achieve the object of the present invention, each invention has the following configuration.
That is, the first invention includes a power transmission device including a primary coil and a power reception device including a secondary coil, and the power transmission device is configured to electromagnetically couple the primary coil and the secondary coil. A non-contact power transmission device configured to transmit power to the power receiving device, wherein the power transmission device includes at least one Hall element, and the power receiving device includes the primary coil and the second coil. When the next coil approaches, at least one magnet that approaches the Hall element is provided, and the power transmission device recognizes that the power receiving device has approached based on the output of the Hall element. ing.

第２の発明は、第１の発明において、前記ホール素子と前記磁石の両者の能力は、前記１次コイルと前記２次コイルとが接近して前記送電装置が前記受電装置に電力の伝送が可能な場合に、前記ホール素子から所望の出力が得られるような関係を有するようにそれぞれ設定されている。   According to a second aspect of the present invention, in the first aspect, the hall elements and the magnets are capable of transmitting power to the power receiving device when the primary coil and the secondary coil approach each other. When possible, they are set so as to have a relationship such that a desired output can be obtained from the Hall element.

第３の発明は、第１または第２の発明において、前記送電装置は、所定の交流電圧を生成し、この生成した交流電圧を前記１次コイルに供給する送電回路と、前記ホール素子の出力に基づいて前記受電装置の個別認識を行い、この認識結果に基づいて前記送電回路の送電制御を行う制御回路と、を備えている。   According to a third invention, in the first or second invention, the power transmission device generates a predetermined AC voltage, and supplies the generated AC voltage to the primary coil, and an output of the Hall element And a control circuit that performs individual recognition of the power receiving device based on the recognition result and performs power transmission control of the power transmission circuit based on the recognition result.

第４の発明は、第３の発明において、前記送電装置は、前記ホール素子の出力電圧に基づいて前記磁石の磁極を検出する磁極検出回路をさらに備え、前記制御回路は、前記磁極検出回路の検出磁極に基づいて前記受電装置の個別認識を行うようになっている。
このような構成からなる本発明によれば、送電装置が受電装置を認識したり、その認識に基づいて送電制御を行う装置を構築する場合に、受電装置側の構成を簡略化できる上に、その製造コストを抑制できる。 In a fourth aspect based on the third aspect, the power transmission device further includes a magnetic pole detection circuit that detects a magnetic pole of the magnet based on an output voltage of the Hall element, and the control circuit includes: The power receiving apparatus is individually recognized based on the detected magnetic pole.
According to the present invention having such a configuration, when the power transmission device recognizes the power reception device or constructs a device that performs power transmission control based on the recognition, the configuration on the power reception device side can be simplified. The manufacturing cost can be suppressed.

以下、本発明の実施形態について、図面を参照して説明する。
本発明の実施形態に係る非接触電力伝送装置の構成について、図１を参照しながら説明する。
この実施形態に係る非接触電力伝送装置は、図１に示すように、電磁誘導作用を利用して、１つの送電装置１が、種類や形式などが異なる複数の受電装置２に対して非接触で電力伝送ができるようになっている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A configuration of a non-contact power transmission apparatus according to an embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the non-contact power transmission apparatus according to this embodiment uses a magnetic induction action so that one power transmission apparatus 1 is non-contact with a plurality of power receiving apparatuses 2 having different types and types. Power transmission is possible.

また、送電装置１は、受電装置２が電力伝送が可能な範囲に存在することを認識して電力伝送をしたり、またはその電力伝送が可能なことを認識したときにさらに受電装置２の種類や形式などを認識（個別認識）し、この認識結果に基づいて受電装置２に対して適正な電力伝送を行うようになっている。
このような送電装置１による受電装置２の認識は、送電装置に設けた少なくも１つのホール素子と、このホール素子に対応して受電装置２側に設けた少なくも１つの磁石とを組み合わせ、そのホール素子の出力に基づいて行うようにした。 The power transmission device 1 recognizes that the power reception device 2 exists in a range where power transmission is possible, or performs power transmission, or further recognizes that the power transmission is possible, the type of the power reception device 2 Are recognized (individual recognition), and appropriate power transmission is performed to the power receiving device 2 based on the recognition result.
Such recognition of the power receiving device 2 by the power transmitting device 1 combines at least one Hall element provided in the power transmitting device and at least one magnet provided on the power receiving device 2 side corresponding to the Hall element, Based on the output of the Hall element.

次に、この実施形態に係る送電装置１および受電装置２の具体的な構成について説明する。
送電装置１は、送電回路１１と、１次コイル１２と、ホール素子１３−１〜１３−３と、磁極検出回路１４−１〜１４−３と、制御回路１５とを備えている。
送電回路１１は、所定の交流電圧を生成し、この生成した交流電圧を１次コイル１２に供給するようになっている。また、送電回路１１が生成する交流電圧の出力や周波数は制御回路１５により制御されるようになっている。 Next, specific configurations of the power transmission device 1 and the power reception device 2 according to this embodiment will be described.
The power transmission device 1 includes a power transmission circuit 11, a primary coil 12, Hall elements 13-1 to 13-3, magnetic pole detection circuits 14-1 to 14-3, and a control circuit 15.
The power transmission circuit 11 generates a predetermined AC voltage and supplies the generated AC voltage to the primary coil 12. The output and frequency of the alternating voltage generated by the power transmission circuit 11 are controlled by the control circuit 15.

１次コイル１２は、電力の伝送の際に受電装置２の２次コイル２１と電磁結合し、電磁誘導作用によって１次コイル１２側から２次コイル２１側に向けて電力を伝送できるようになっている。すなわち、１次コイル１２と２次コイル２１とは、物理的に分離自在なトランスを構成するようになっている。
ホール素子１３−１〜１３−３は、送電装置１の１次コイル１２と受電装置２の２次コイル２１とが接近する際に、受電装置２側の対応する永久磁石２３−１〜２３−３と接近してその磁力を検出し、その磁力に応じた電気信号を出力するようになっている。ここで、この例ではホール素子の個数は３個としたが、その個数は、１個または複数個のいずれであっても良い。 The primary coil 12 is electromagnetically coupled to the secondary coil 21 of the power receiving device 2 during power transmission, and can transmit power from the primary coil 12 side to the secondary coil 21 side by electromagnetic induction. ing. That is, the primary coil 12 and the secondary coil 21 constitute a physically separable transformer.
When the primary coil 12 of the power transmission device 1 and the secondary coil 21 of the power reception device 2 approach the Hall elements 13-1 to 13-3, the corresponding permanent magnets 23-1 to 23- on the power reception device 2 side. 3, the magnetic force is detected and an electric signal corresponding to the magnetic force is output. Here, in this example, the number of Hall elements is three, but the number may be either one or plural.

磁極検出回路１４−１〜１４−３は、永久磁石２３−１〜２３−３が対応するホール素子１３−１〜１３−３に接近したときに、そのホール素子１３−１〜１３−３の各出力電圧に基づき、永久磁石２３−１〜２３−３の磁極を検出するようになっている。
制御回路１５は、磁極検出回路１４−１〜１４−３が検出する永久磁石２３−１〜２３−３の各磁極に基づき、受電装置２の種類などの認識（個別認識）を行い、この認識結果に基づいて送電装置１の出力電力を決定し、この決定した電力を伝送するように送電回路１１の送電制御を行うようになっている。 When the permanent magnets 23-1 to 23-3 approach the corresponding Hall elements 13-1 to 13-3, the magnetic pole detection circuits 14-1 to 14-3 Based on each output voltage, the magnetic poles of the permanent magnets 23-1 to 23-3 are detected.
The control circuit 15 recognizes (individually recognizes) the type of the power receiving device 2 based on the magnetic poles of the permanent magnets 23-1 to 23-3 detected by the magnetic pole detection circuits 14-1 to 14-3. Based on the result, the output power of the power transmission device 1 is determined, and the power transmission control of the power transmission circuit 11 is performed so as to transmit the determined power.

受電装置２は、図１に示すように、２次コイル２１と、受電回路２２と、永久磁石２３−１〜２３−３とを備え、受電回路２２に負荷２４が接続されるようになっている。
２次コイル２１は、送電装置１側の１次コイル１２と電磁結合するようになっている。受電回路２２は、２次コイル２１の誘起電圧を整流し、この整流電圧を負荷２４に供給するようになっている。 As shown in FIG. 1, the power receiving device 2 includes a secondary coil 21, a power receiving circuit 22, and permanent magnets 23-1 to 23-3, and a load 24 is connected to the power receiving circuit 22. Yes.
The secondary coil 21 is electromagnetically coupled to the primary coil 12 on the power transmission device 1 side. The power receiving circuit 22 rectifies the induced voltage of the secondary coil 21 and supplies the rectified voltage to the load 24.

永久磁石２３−１〜２３−３は、受電装置２の種類などを送電装置１が識別するために使用するものであり、１次コイル１２と２次コイル２１とが接近して対向する際に、送電装置１側のホール素子１３−１〜１３−３に対向するように配置されている。ここで、永久磁石２３−１〜２３−３としては、例えばネオジム磁石が使用される。   The permanent magnets 23-1 to 23-3 are used for the power transmission device 1 to identify the type of the power receiving device 2 and the like, and when the primary coil 12 and the secondary coil 21 face each other close to each other. These are arranged so as to face the Hall elements 13-1 to 13-3 on the power transmission device 1 side. Here, as the permanent magnets 23-1 to 23-3, for example, neodymium magnets are used.

次に、送電装置１側の１次コイル１２およびホール素子１３−１〜１３−３の配置例と、これらに対応する受電装置２側の２次コイルおよび永久磁石２３−１〜２３−３の配置例について、図２を参照して説明する。
送電装置１は、図２に示すように、各部がケース３内に収納され、そのうちの１次コイル１２とホール素子１３−１〜１３−３は、そのケース３の正面側にそれぞれ配置されている。 Next, an arrangement example of the primary coil 12 and the Hall elements 13-1 to 13-3 on the power transmission device 1 side, and the corresponding secondary coils and permanent magnets 23-1 to 23-3 on the power reception device 2 side corresponding thereto. An arrangement example will be described with reference to FIG.
As shown in FIG. 2, each part of the power transmission device 1 is housed in the case 3, and the primary coil 12 and the hall elements 13-1 to 13-3 are respectively disposed on the front side of the case 3. Yes.

１次コイル１２は、例えば平面状の巻線コイルからなりその表面が絶縁されて露出するように配置されている。また、ホール素子１３−１〜１３−３は、ケース３の正面側の一部に図示のように所定間隔をおいて配置され、その各検出面が露出するようになっている。
受電装置２は、図２に示すように、各部がケース４内に収納され、そのうちの２次コイル２１と永久磁石２３−１〜２３−３は、そのケース４の正面側にそれぞれ配置されている。 The primary coil 12 is composed of, for example, a planar winding coil, and is disposed so that the surface thereof is insulated and exposed. Further, the Hall elements 13-1 to 13-3 are arranged at a predetermined interval as shown in the figure on a part of the front side of the case 3, and the detection surfaces thereof are exposed.
As shown in FIG. 2, each part of the power receiving device 2 is accommodated in the case 4, and the secondary coil 21 and the permanent magnets 23-1 to 23-3 are arranged on the front side of the case 4. Yes.

２次コイル２１は、例えば平面状の巻線コイルからなりその表面が絶縁されて露出するようになっている。そして、２次コイル２１のコイル面は、その使用時には１次コイルのコイル面と対向してトランス（変圧器）を形成するようになっている。
また、永久磁石２３−１〜２３−３は、ケースの正面側の一部に図示のように所定間隔をおいて配置されて、その各磁極の端面が露出するようになっている。そして、永久磁石２３−１〜２３−３の各端面は、送電装置１側の対応するホール素子１３−１〜１３−３の検出面とそれぞれ対向するようになっている。 The secondary coil 21 is composed of, for example, a planar winding coil, and its surface is insulated and exposed. The coil surface of the secondary coil 21 forms a transformer (transformer) opposite to the coil surface of the primary coil when used.
Further, the permanent magnets 23-1 to 23-3 are arranged at a predetermined interval as shown in the figure on a part of the front side of the case so that the end faces of the respective magnetic poles are exposed. And each end surface of the permanent magnets 23-1 to 23-3 is respectively opposed to the detection surface of the corresponding hall element 13-1 to 13-3 on the power transmission device 1 side.

ここで、ホール素子１３−１〜１３−３と永久磁石２３−１〜２３−３の能力は、１次コイル１２と２次コイル２１とが接近して送電装置１が受電装置２に電力の伝送が可能な場合に（図３参照）、ホール素子１３−１〜１３−３から所望の出力が得られるような関係を有するようにそれぞれ設定されている。   Here, the capacity of the Hall elements 13-1 to 13-3 and the permanent magnets 23-1 to 23-3 is such that the primary coil 12 and the secondary coil 21 approach each other, and the power transmission device 1 supplies power to the power reception device 2. When transmission is possible (refer to FIG. 3), each is set so as to have a relationship such that a desired output can be obtained from the Hall elements 13-1 to 13-3.

次に、このような構成からなる実施形態の動作について、図１〜図３を参照して説明する。
この実施形態は、例えば、送電装置１に対して送電装置２を接近させて使用し、そのときの両者の関係の一例を示すと図３に示すようになる。
このときには、図示のように、送電装置１側のホール素子１３−１〜１３−３の各検出面と、受電装置２側の対応する永久磁石２３−１〜２３−３の各端面とが対向した状態となる。これと同時に、送電装置１側の１次コイル１２と、受電装置２側の２次コイル２１とは、そのコイル面が対向した状態になる。 Next, the operation of the embodiment having such a configuration will be described with reference to FIGS.
In this embodiment, for example, the power transmission device 2 is used close to the power transmission device 1, and an example of the relationship between the two is shown in FIG.
At this time, as shown in the figure, the detection surfaces of the Hall elements 13-1 to 13-3 on the power transmission device 1 side and the end surfaces of the corresponding permanent magnets 23-1 to 23-3 on the power reception device 2 side face each other. It will be in the state. At the same time, the primary coil 12 on the power transmission device 1 side and the secondary coil 21 on the power reception device 2 side are in a state where their coil surfaces face each other.

そして、このときに、送電装置１が受電装置２に対して電力の伝送が可能であれば、ホール素子１３−１〜１３−３には、永久磁石２３−１〜２３−３の磁極とその強さに応じた所望の電圧がそれぞれ出力される。
磁極検出回路１４−１〜１４−３は、そのホール素子１３−１〜１３−３の各出力電圧に基づき、永久磁石２３−１〜２３−３の各磁極を検出する。この例では、磁極検出回路１４−１は磁極Ｓ、磁極検出回路１４−２は磁極Ｎ、および磁極検出回路１４−３は磁極Ｎを検出する。 At this time, if the power transmitting device 1 can transmit power to the power receiving device 2, the Hall elements 13-1 to 13-3 have the magnetic poles of the permanent magnets 23-1 to 23-3 and the A desired voltage corresponding to the strength is output.
The magnetic pole detection circuits 14-1 to 14-3 detect the magnetic poles of the permanent magnets 23-1 to 23-3 based on the output voltages of the Hall elements 13-1 to 13-3. In this example, the magnetic pole detection circuit 14-1 detects the magnetic pole S, the magnetic pole detection circuit 14-2 detects the magnetic pole N, and the magnetic pole detection circuit 14-3 detects the magnetic pole N.

制御回路１５は、磁極検出回路１４−１〜１４−３の検出する永久磁石２３−１〜２３−３の各磁極に基づき、送電装置１が受電装置２に対して電力の伝送が可能であることを認識する。
さらに、制御回路１５は、その磁極検出回路１４−１〜１４−３の検出する永久磁石２３−１〜２３−３の各磁極に基づき、受電装置２の種類などの認識（個別認識）を行い、この認識結果に基づいて送電装置１の出力電力を決定し、この決定した電力を伝送するように送電回路１１の送電制御を行う。 The control circuit 15 allows the power transmission device 1 to transmit power to the power reception device 2 based on the magnetic poles of the permanent magnets 23-1 to 23-3 detected by the magnetic pole detection circuits 14-1 to 14-3. Recognize that.
Furthermore, the control circuit 15 performs recognition (individual recognition) of the type of the power receiving device 2 based on the magnetic poles of the permanent magnets 23-1 to 23-3 detected by the magnetic pole detection circuits 14-1 to 14-3. The output power of the power transmission device 1 is determined based on the recognition result, and the power transmission control of the power transmission circuit 11 is performed so as to transmit the determined power.

ここで、図３に示すように、送電装置１と受電装置２との両者の距離Ｌが、例えばＬ＝４〔ｍｍ〕以下の場合に、送電装置１が受電装置２に対して電力の伝送が可能であるとすると、永久磁石２３−１〜２３−３は、ホール素子１３−１〜１３−３との距離Ｌが４〔ｍｍ〕の場合に、そのホール素子１３−１〜１３−３が反応できる磁束密度を有するものが要求される。
従って、ホール素子と永久磁石の能力は、例えば、距離Ｌが４〔ｍｍ〕でホール素子の感度が６〔ｍＴ〕の場合には、永久磁石は表面磁束密度は、６ｍＴ×（４ｍｍ×４ｍｍ×４ｍｍ）＝３８４ｍＴとなる。 Here, as shown in FIG. 3, when the distance L between the power transmission device 1 and the power reception device 2 is, for example, L = 4 [mm] or less, the power transmission device 1 transmits power to the power reception device 2. When the distance L between the permanent magnets 23-1 to 23-3 and the Hall elements 13-1 to 13-3 is 4 [mm], the Hall elements 13-1 to 13-3 are Is required to have a magnetic flux density that can react.
Therefore, for example, when the distance L is 4 [mm] and the sensitivity of the Hall element is 6 [mT], the permanent magnet has a surface magnetic flux density of 6 mT × (4 mm × 4 mm ×). 4 mm) = 384 mT.

以上のように、この実施形態では、送電装置１による受電装置２の認識を、送電装置１に設けた少なくも１つのホール素子と、このホール素子に対応して受電装置２側に設けた少なくも１つの磁石との組み合わせで行うようにした。このため、送電装置が受電装置を認識する装置を構築する場合に、受電装置側の構成を簡略化できる上に、その製造コストを抑制できる。   As described above, in this embodiment, the power receiving device 1 recognizes the power receiving device 2 by at least one Hall element provided in the power transmitting device 1 and a small amount provided on the power receiving device 2 side corresponding to the Hall element. Is also performed in combination with one magnet. For this reason, when the power transmission apparatus constructs an apparatus that recognizes the power reception apparatus, the configuration on the power reception apparatus side can be simplified and the manufacturing cost can be suppressed.

また、この実施形態では、送電装置が受電装置を認識するにあたり、物理的な接触を伴わないので、接触に伴う弊害がない。
さらに、この実施形態では、受電装置２が電力伝送が可能な範囲に存在することを認識したときにはじめて電力伝送ができ、またはその電力伝送が可能であることを認識したときにさらに受電装置２の種類や形式などを個別認識し、この認識結果に基づいて受電装置２に対して適正な電力伝送ができる。 In this embodiment, since the power transmission device recognizes the power reception device without physical contact, there is no adverse effect associated with contact.
Furthermore, in this embodiment, when the power receiving apparatus 2 recognizes that the power transmission apparatus 2 exists in a range where power transmission is possible, the power transmission apparatus 2 can perform power transmission only when it recognizes that the power transmission is possible. Can be recognized individually, and appropriate power transmission can be performed to the power receiving apparatus 2 based on the recognition result.

本発明の実施形態の構成を示すブロック図である。It is a block diagram which shows the structure of embodiment of this invention. その実施形態の外観構成を示す正面図である。It is a front view which shows the external appearance structure of the embodiment. その実施形態の使用状態を説明する図である。It is a figure explaining the use condition of the embodiment.

符号の説明Explanation of symbols

１・・・送電装置、２・・・受電装置、１１・・・送電回路、１２・・・１次コイル、１３−１〜１３−３・・・ホール素子、１４−１〜１４−３・・・磁極検出回路、１５・・・制御回路、２１・・・２次コイル、２２・・・受電回路、２３−１〜２３−３・・・永久磁石、２４・・・負荷   DESCRIPTION OF SYMBOLS 1 ... Power transmission apparatus, 2 ... Power receiving apparatus, 11 ... Power transmission circuit, 12 ... Primary coil, 13-1 to 13-3 ... Hall element, 14-1 to 14-3 ..Magnetic pole detection circuit, 15 ... control circuit, 21 ... secondary coil, 22 ... power receiving circuit, 23-1 to 23-3 ... permanent magnet, 24 ... load

Claims (4)

１次コイルを含む送電装置と、２次コイルを含む受電装置とからなり、前記１次コイルと前記２次コイルとを電磁的に結合させて、前記送電装置が前記受電装置に対して電力の伝送を行うようになっている非接触電力伝送装置であって、
前記送電装置は、少なくとも１つのホール素子を備え、
前記受電装置は、前記１次コイルと前記２次コイルとが接近する際に、前記ホール素子と接近する少なくとも１つの磁石を備え、
かつ、前記送電装置は、前記ホール素子の出力に基づいて前記受電装置が接近したことを認識するようになっていることを特徴とする非接触電力伝送装置。 A power transmission device including a primary coil and a power reception device including a secondary coil, wherein the primary coil and the secondary coil are electromagnetically coupled, and the power transmission device transmits power to the power reception device. A non-contact power transmission device adapted to perform transmission,
The power transmission device includes at least one Hall element,
The power receiving device includes at least one magnet that approaches the Hall element when the primary coil and the secondary coil approach,
And the said power transmission apparatus recognizes that the said power receiving apparatus approached based on the output of the said Hall element, The non-contact electric power transmission apparatus characterized by the above-mentioned. 前記ホール素子と前記磁石の両者の能力は、前記１次コイルと前記２次コイルとが接近して前記送電装置が前記受電装置に電力の伝送が可能な場合に、前記ホール素子から所望の出力が得られるような関係を有するようにそれぞれ設定されていること特徴とする請求項１に記載の非接触電力伝送装置。   The hall element and the magnet both have the capability that when the primary coil and the secondary coil come close to each other and the power transmission device can transmit power to the power reception device, a desired output from the hall element is obtained. The non-contact power transmission apparatus according to claim 1, wherein each of the non-contact power transmission apparatuses is set to have a relationship such that 前記送電装置は、
所定の交流電圧を生成し、この生成した交流電圧を前記１次コイルに供給する送電回路と、
前記ホール素子の出力に基づいて前記受電装置の個別認識を行い、この認識結果に基づいて前記送電回路の送電制御を行う制御回路と、
を備えることを特徴とする請求項１または請求項２に記載の非接触電力伝送装置。 The power transmission device is:
A power transmission circuit that generates a predetermined AC voltage and supplies the generated AC voltage to the primary coil;
A control circuit that performs individual recognition of the power receiving device based on the output of the Hall element, and performs power transmission control of the power transmission circuit based on the recognition result;
The non-contact power transmission apparatus according to claim 1 or 2, wherein 前記送電装置は、前記ホール素子の出力電圧に基づいて前記磁石の磁極を検出する磁極検出回路をさらに備え、
前記制御回路は、前記磁極検出回路の検出磁極に基づいて前記受電装置の個別認識を行うようになっていることを特徴とする請求項３に記載の非接触電力伝送装置。 The power transmission device further includes a magnetic pole detection circuit that detects a magnetic pole of the magnet based on an output voltage of the Hall element,
The contactless power transmission device according to claim 3, wherein the control circuit performs individual recognition of the power receiving device based on a detected magnetic pole of the magnetic pole detecting circuit.
JP2006021980A 2006-01-31 2006-01-31 Noncontact power transmission apparatus Withdrawn JP2007206776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006021980A JP2007206776A (en) 2006-01-31 2006-01-31 Noncontact power transmission apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006021980A JP2007206776A (en) 2006-01-31 2006-01-31 Noncontact power transmission apparatus

Publications (2)

Publication Number Publication Date
JP2007206776A true JP2007206776A (en) 2007-08-16
JP2007206776A5 JP2007206776A5 (en) 2009-03-12

Family

ID=38486234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006021980A Withdrawn JP2007206776A (en) 2006-01-31 2006-01-31 Noncontact power transmission apparatus

Country Status (1)

Country Link
JP (1) JP2007206776A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101188808B1 (en) 2011-03-03 2012-10-09 (주)엠에이피테크 Wireless charging apparatus for mobile
JP2013069280A (en) * 2011-09-23 2013-04-18 Acer Inc Electronic devices and fool-proof methods
US8729734B2 (en) 2007-11-16 2014-05-20 Qualcomm Incorporated Wireless power bridge
JP2020184879A (en) * 2015-03-04 2020-11-12 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． Inductive power transmitter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05190270A (en) * 1992-01-10 1993-07-30 Matsushita Electric Ind Co Ltd Door switch mechanism for microwave oven
JPH09128110A (en) * 1995-10-31 1997-05-16 Matsushita Electric Ind Co Ltd Personal computer
JP2004227071A (en) * 2003-01-20 2004-08-12 Olympus Corp Information terminal device system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05190270A (en) * 1992-01-10 1993-07-30 Matsushita Electric Ind Co Ltd Door switch mechanism for microwave oven
JPH09128110A (en) * 1995-10-31 1997-05-16 Matsushita Electric Ind Co Ltd Personal computer
JP2004227071A (en) * 2003-01-20 2004-08-12 Olympus Corp Information terminal device system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8729734B2 (en) 2007-11-16 2014-05-20 Qualcomm Incorporated Wireless power bridge
KR101445993B1 (en) * 2007-11-16 2014-09-29 퀄컴 인코포레이티드 Wireless power bridge
US9966188B2 (en) 2007-11-16 2018-05-08 Qualcomm Incorporated Wireless power bridge
KR101188808B1 (en) 2011-03-03 2012-10-09 (주)엠에이피테크 Wireless charging apparatus for mobile
JP2013069280A (en) * 2011-09-23 2013-04-18 Acer Inc Electronic devices and fool-proof methods
US9257785B2 (en) 2011-09-23 2016-02-09 Acer Incorporated Electronic devices and fool-proof methods
JP2020184879A (en) * 2015-03-04 2020-11-12 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． Inductive power transmitter

Similar Documents

Publication Publication Date Title
JP6963659B2 (en) Inductive power transmitter
EP2317625B1 (en) Foreign object detection in inductive coupled devices
JP5689587B2 (en) Power transmission equipment
EP3080825B1 (en) Transmitter for inductive power transfer systems
CN101836272B (en) Inductive power supply
US11710984B2 (en) Wireless charging system with simultaneous wireless power transfer at different frequencies
US9071076B2 (en) Limitation of vampiric energy loss within a wireless inductive battery charger
JP6260693B2 (en) Contactless power supply
JP5400734B2 (en) Non-contact power transmission device
WO2021257168A1 (en) Wireless charging system with a switchable magnetic core
JP2010148287A (en) Power supply system
US20190311848A1 (en) Inductive power transfer assembly
JP2007206776A (en) Noncontact power transmission apparatus
TWI417910B (en) Electromagnetic apparatus using shared flux in a multi-load parallel magnetic circuit and method of operation
KR20170072761A (en) A coil device and an apparatus comprising the same
CN201477214U (en) Nearness sensor
JP2008167582A (en) Non-contact power transmission device
KR102190820B1 (en) Wireless charging borad and wireless charging device
KR20170037406A (en) Apparatus for receiving power wirelessly and power supply apparatus using the same
JP2014057429A (en) Non-contact power transmitter
KR100863132B1 (en) Wireless mouse apparatus
JP2014236542A (en) Transmitter and coil unit

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090122

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090122

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100901

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100907

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20101102