JP2010273473A - Power supply - Google Patents
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- JP2010273473A JP2010273473A JP2009124073A JP2009124073A JP2010273473A JP 2010273473 A JP2010273473 A JP 2010273473A JP 2009124073 A JP2009124073 A JP 2009124073A JP 2009124073 A JP2009124073 A JP 2009124073A JP 2010273473 A JP2010273473 A JP 2010273473A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
【課題】受電装置に効率的に電力を供給することができる電力供給装置を提供する。
【解決手段】受電装置２に電磁誘導により電力を供給する電力供給装置１において、受電装置２が配置されたことを検出する受電装置検出手段（受信認証リーダー）と、受電装置２に電磁誘導により電力を供給する給電コイル１２とを有する。また、受電装置検出手段により受電装置２が配置されたことが検出されると、給電コイル１２を受電装置２に電力供給することが可能な位置に移動させる。
【選択図】図１A power supply device capable of efficiently supplying power to a power receiving device is provided.
In a power supply apparatus 1 for supplying power to a power receiving apparatus 2 by electromagnetic induction, a power receiving apparatus detecting means (reception authentication reader) for detecting that the power receiving apparatus 2 is disposed; And a power supply coil 12 for supplying power. Further, when it is detected by the power receiving device detection means that the power receiving device 2 is arranged, the power feeding coil 12 is moved to a position where power can be supplied to the power receiving device 2.
[Selection] Figure 1
Description
本発明は、受電装置に電力を供給する電力供給装置に関する。 The present invention relates to a power supply device that supplies power to a power receiving device.
非接触で電子機器に電力を供給する電力供給装置では、電力供給装置の給電コイルと、電子機器の受電コイルとを正しく合わせることが要求される。電力供給装置の給電コイルと、電子機器の受電コイルとを正しく合わせることができなければ、電力供給装置から電子機器に効率よく電力を供給することができないためである。電力供給装置が有する給電コイルの数が増えれば、電子機器を配置することができる場所も増えるので、ユーザの利便性が向上する。例えば、特許文献１及び２には、複数の給電コイルを有する電力供給装置が開示されている。 In a power supply device that supplies power to an electronic device in a non-contact manner, it is required that the power feeding coil of the power supply device and the power receiving coil of the electronic device are correctly aligned. This is because if the power supply coil of the power supply device and the power reception coil of the electronic device cannot be properly aligned, it is not possible to efficiently supply power from the power supply device to the electronic device. If the number of power supply coils included in the power supply device is increased, the number of places where electronic devices can be arranged increases, which improves the convenience for the user. For example, Patent Documents 1 and 2 disclose a power supply device having a plurality of power supply coils.
しかしながら、電力供給装置が複数の給電コイルを有する場合は、電子機器がどこに配置されてもよいように、複数のコイルを常に駆動しておく必要があり、消費電力が増大するという問題が生じる。また、電力供給装置が１つの給電コイルを有する場合は、電子機器は予め定められた１つの場所にしか置くことができず、使いにくくなるという問題が生じる。 However, when the power supply apparatus includes a plurality of power supply coils, it is necessary to always drive the plurality of coils so that the electronic device may be disposed anywhere, and there is a problem that power consumption increases. Further, when the power supply device has one power supply coil, the electronic device can be placed only at one predetermined place, which causes a problem that it is difficult to use.
そこで、本発明は、受電装置に効率的に電力を供給することができる電力供給装置を提供することを目的とする。 Then, an object of this invention is to provide the electric power supply apparatus which can supply electric power efficiently to a power receiving apparatus.
上記目的を達成するために、本発明に係る電力供給装置は、受電装置に電磁誘導により電力を供給する電力供給装置において、前記受電装置が配置されたことを検出する受電装置検出手段と、前記受電装置に前記電磁誘導により電力を供給する給電コイルとを有し、前記受電装置検出手段により前記受電装置が配置されたことが検出されると、前記給電コイルを前記受電装置に電力供給することが可能な位置に移動させることを特徴とする。 In order to achieve the above object, a power supply apparatus according to the present invention includes a power receiving apparatus detecting unit that detects that the power receiving apparatus is disposed in a power supply apparatus that supplies power to the power receiving apparatus by electromagnetic induction, and A power supply coil that supplies power to the power reception device by the electromagnetic induction, and when the power reception device detection unit detects that the power reception device is disposed, supplies the power to the power reception device. It is characterized in that it is moved to a position where possible.
本発明の電力供給装置によれば、受電装置に効率的に電力を供給することができる。 According to the power supply device of the present invention, it is possible to efficiently supply power to the power receiving device.
図１は、本発明の実施の形態に係る充電システムの構成の一例を示すブロック図である。本発明の実施の形態に係る充電システムは、電力供給装置１と、受電装置である電子機器２とを有する。 FIG. 1 is a block diagram showing an example of a configuration of a charging system according to an embodiment of the present invention. A charging system according to an embodiment of the present invention includes a power supply device 1 and an electronic device 2 that is a power receiving device.
まず、図１を参照して、電力供給装置１の構成の一例を説明する。 First, an example of the configuration of the power supply device 1 will be described with reference to FIG.
電源１１は、電力供給装置１に電力を供給する。給電コイル１２は、電磁誘導により電力を供給するためのもので、鉄心１３、第１のコイル１４及び第２のコイル１５で構成されている。 The power supply 11 supplies power to the power supply device 1. The power supply coil 12 is for supplying electric power by electromagnetic induction, and includes an iron core 13, a first coil 14, and a second coil 15.
第１のスイッチング素子１６は、第１のコイル１４の巻き終わりＢと接地電位間に接続され、第１のコイル１４に流れる電流をオンオフする。第２のスイッチング素子１７は、第２のコイル１５の巻き終わりＣと接地電位間に接続され、第２のコイル１５に流れる電流をオンオフ動作する。 The first switching element 16 is connected between the winding end B of the first coil 14 and the ground potential, and turns on and off the current flowing through the first coil 14. The second switching element 17 is connected between the winding end C of the second coil 15 and the ground potential, and performs an on / off operation of the current flowing through the second coil 15.
スイッチング素子制御部１８は、第１のスイッチング素子１６及び第２のスイッチング素子１７のオンオフ動作を制御する。受信認証リーダー１９は、電力供給装置１に電子機器２が置かれたことを検出する。 The switching element control unit 18 controls the on / off operation of the first switching element 16 and the second switching element 17. The reception authentication reader 19 detects that the electronic device 2 is placed on the power supply device 1.
次に、図１を参照して、電子機器２の構成の一例を説明する。 Next, an example of the configuration of the electronic device 2 will be described with reference to FIG.
受電コイル２１は、電磁誘導により電力を受電するためのもので、鉄心２２及び第３のコイル２３で構成されている。整流ダイオード２４は、供給された電圧を整流する。電池２５は、電力供給装置１から供給された電力を蓄え、電子機器２に電力を供給する。 The power receiving coil 21 is for receiving power by electromagnetic induction, and includes an iron core 22 and a third coil 23. The rectifier diode 24 rectifies the supplied voltage. The battery 25 stores the power supplied from the power supply device 1 and supplies the power to the electronic device 2.
電池制御部２６は、電池電圧を電子機器２が必要な電圧に変換する。制御部であるＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）２７は、電子機器２全体を制御する。送信認証タグ２８は、電力供給装置１に電子機器２が置かれたことを検出する。 The battery control unit 26 converts the battery voltage into a voltage required by the electronic device 2. A CPU (Central Processing Unit) 27 serving as a control unit controls the entire electronic device 2. The transmission authentication tag 28 detects that the electronic device 2 is placed on the power supply device 1.
図２は、電子機器２が電力供給装置１に配置されていない状態における給電コイル１２の位置の一例を示す図である。図３は、電力供給装置１が電池２５を充電している場合における給電コイル１２の位置の一例を示す図である。図４は、電力供給装置１による電池２５の充電が終了した場合における給電コイル１２の位置の一例を示す図である。 FIG. 2 is a diagram illustrating an example of the position of the feeding coil 12 in a state where the electronic device 2 is not disposed in the power supply device 1. FIG. 3 is a diagram illustrating an example of the position of the power feeding coil 12 when the power supply device 1 is charging the battery 25. FIG. 4 is a diagram illustrating an example of the position of the feeding coil 12 when charging of the battery 25 by the power supply device 1 is completed.
説明の便宜上、電力供給装置１と電子機器２のそれぞれが有するコイルを透過させて図示している。 For convenience of explanation, the coils included in each of the power supply device 1 and the electronic device 2 are shown through.
受電コイル２１は、電子機器２の内部で常に固定された状態で保持されている。給電コイル１２は、電力供給装置１の内部で上下方向に移動可能な構成になっており、充電前あるいは充電終了後の給電コイル１２は、受電コイル２１に電力を供給することができない位置に保持されている。 The power receiving coil 21 is held in a constantly fixed state inside the electronic device 2. The power feeding coil 12 is configured to be movable in the vertical direction inside the power supply device 1, and the power feeding coil 12 before or after charging is held at a position where power cannot be supplied to the power receiving coil 21. Has been.
図５は、給電コイル１２と受電コイル２１の構成の一例を示す図である。 FIG. 5 is a diagram illustrating an example of the configuration of the power feeding coil 12 and the power receiving coil 21.
給電コイル１２は、鉄心１３に第１のコイル１４及び第２のコイル１５が巻かれて構成されている。そして、第１のコイル１４と第２のコイル１５の巻き始めＡは接続されている。そして、巻き始めＡから、第１のコイル１４の巻き終わりＢ及び第２のコイル１５の巻き終わりＣに電流を流した際、第１のコイル１４により生成される磁界の向きと第２のコイル１５により生成される磁界の向きが異なるように、両コイルは巻かれている。 The power supply coil 12 is configured by winding a first coil 14 and a second coil 15 around an iron core 13. And the winding start A of the 1st coil 14 and the 2nd coil 15 is connected. The direction of the magnetic field generated by the first coil 14 and the second coil when a current is passed from the winding start A to the winding end B of the first coil 14 and the winding end C of the second coil 15. Both coils are wound so that the direction of the magnetic field generated by 15 differs.
受電コイル２１は、鉄心２２に第３のコイル２３が巻かれて構成されている。第３のコイル２３の巻き始めＤから第３のコイル２３の巻き終わりＥに電流を流した際に、第３のコイル２３により生成される磁界の向きと、第１のコイル１４により生成される上記磁界の向きが同じになるように第３のコイル２３は巻かれている。 The power receiving coil 21 is configured by winding a third coil 23 around an iron core 22. When a current is passed from the winding start D of the third coil 23 to the winding end E of the third coil 23, the direction of the magnetic field generated by the third coil 23 and the first coil 14 are generated. The third coil 23 is wound so that the directions of the magnetic fields are the same.
図６は、図１に示す充電システムによって実行される充電処理の手順を示すフローチャートである。 FIG. 6 is a flowchart showing the procedure of the charging process executed by the charging system shown in FIG.
受信認証リーダー１９は、送信認証タグ２８と通信し、所定の認証処理を行う（ステップＳ１）。所定の認証処理に成功すると、受信認証リーダー１９は、電力供給装置１に電子機器２が置かれたことを検出する。そして、受信認証リーダー１９は、スイッチング素子制御部１８に起動信号を送る（ステップＳ２）。 The reception authentication reader 19 communicates with the transmission authentication tag 28 and performs a predetermined authentication process (step S1). When the predetermined authentication process is successful, the reception authentication reader 19 detects that the electronic device 2 is placed on the power supply device 1. Then, the reception authentication reader 19 sends an activation signal to the switching element control unit 18 (step S2).
受信認証リーダー１９からの起動信号がスイッチング素子制御部１８に入力された場合、スイッチング素子制御部１８は、第１のスイッチング素子１６のオンオフ動作を開始する（ステップＳ３）。この場合、電池２５は、給電コイル１２と受電コイル２１の電磁的結合により、充電されることになる。 When the activation signal from the reception authentication reader 19 is input to the switching element control unit 18, the switching element control unit 18 starts an on / off operation of the first switching element 16 (step S3). In this case, the battery 25 is charged by electromagnetic coupling between the power feeding coil 12 and the power receiving coil 21.
図７は、第１のスイッチング素子１６がオンオフ動作を行っている場合に、第１のコイル１４及び第３のコイル２３を流れる電流の波形を示す図である。 FIG. 7 is a diagram illustrating waveforms of currents flowing through the first coil 14 and the third coil 23 when the first switching element 16 performs an on / off operation.
第１のスイッチング素子１６のオンオフ動作が開始されると、第１のスイッチング素子１６のオン期間に、第１のコイル１４には巻き始めＡから巻き終わりＢの向きへ電流が流れる。同時に第３のコイル２３には電磁誘導により、第１のスイッチング素子１６のオフ期間に巻き始めＤから巻き終わりＥの向きへ電流が流れる。 When the on / off operation of the first switching element 16 is started, a current flows from the winding start A to the winding end B in the first coil 14 during the ON period of the first switching element 16. At the same time, a current flows through the third coil 23 from the start of winding D to the end of winding E during the OFF period of the first switching element 16 due to electromagnetic induction.
第１のコイル１４及び第３のコイル２３に電流が流れ出すと、鉄心１３の第１のコイル１４の巻き始めＡ側と鉄心２２の第３のコイル２３の巻き終わりＥ側とが異なる極性となるように磁化される。 When current starts to flow through the first coil 14 and the third coil 23, the winding start A side of the first coil 14 of the iron core 13 and the winding end E side of the third coil 23 of the iron core 22 have different polarities. So that it is magnetized.
そのため、図３に示したように、給電コイル１２は電力供給装置１の内部で受電コイル２１に引き付けられて上方向に移動する。この給電コイル１２の位置は、受電コイル２１を十分に電力を供給することが可能な程度に受電コイル２１に対して接近した位置である。 Therefore, as shown in FIG. 3, the power feeding coil 12 is attracted to the power receiving coil 21 inside the power supply device 1 and moves upward. The position of the power feeding coil 12 is a position close to the power receiving coil 21 to such an extent that the power can be supplied to the power receiving coil 21 sufficiently.
スイッチング素子制御部１８は、起動中、第１のコイル１４の巻き終わりＢの電圧を検出する。第１のコイル１４の巻き終わりＢの電圧が所定の電圧に達した場合、スイッチング素子制御部１８は、電池２５の充電が完了したと判断し（ステップＳ４）、第１のスイッチング素子１６のオンオフ動作を停止する（ステップＳ５）。 The switching element control unit 18 detects the voltage at the winding end B of the first coil 14 during startup. When the voltage at the winding end B of the first coil 14 reaches a predetermined voltage, the switching element control unit 18 determines that the charging of the battery 25 is completed (step S4), and the first switching element 16 is turned on / off. The operation is stopped (step S5).
第１のスイッチング素子１６のオンオフ動作を停止後、スイッチング素子制御部１８は、第２のスイッチング素子１７のオンオフ動作を開始する（ステップＳ６）。 After stopping the on / off operation of the first switching element 16, the switching element controller 18 starts the on / off operation of the second switching element 17 (step S6).
第２のスイッチング素子１７のオンオフ動作が開始されると、第２のスイッチング素子１７のオン期間に、第２のコイル１５には巻き始めＡから巻き終わりＣの向きへ電流が流れる。 When the on / off operation of the second switching element 17 is started, a current flows from the winding start A to the winding end C in the second coil 15 during the ON period of the second switching element 17.
同時に、第３のコイル２３には、電磁誘導により、第２のスイッチング素子１７のオフ期間に巻き始めＤから巻き終わりＥの向きへ電流が流れる。 At the same time, a current flows through the third coil 23 from the start of winding D to the end of winding E during the OFF period of the second switching element 17 due to electromagnetic induction.
第２のコイル１５及び第３のコイル２３に電流が流れ出すと、鉄心１３の第２のコイル１５の巻き始めＡ側と鉄心２２の第３のコイル２３の巻き終わりＥ側とが同じ極性となるように磁化される。 When a current starts to flow through the second coil 15 and the third coil 23, the winding start A side of the second coil 15 of the iron core 13 and the winding end E side of the third coil 23 of the iron core 22 have the same polarity. So that it is magnetized.
そのため、図４に示したように、給電コイル１２は、電力供給装置１の内部で受電コイル２１に反発されて下方向に移動する。このとき、給電コイル１２は、受電コイル２１に電力を供給することができない位置まで移動する。 Therefore, as shown in FIG. 4, the power feeding coil 12 is repelled by the power receiving coil 21 inside the power supply device 1 and moves downward. At this time, the power feeding coil 12 moves to a position where power cannot be supplied to the power receiving coil 21.
給電コイル１２が受電コイル２１に電力を供給することができない位置まで移動した後、スイッチング素子制御部１８は、第２のスイッチング素子１７のオンオフ動作を停止する（ステップＳ７）。そして、本処理を終了する。 After the power feeding coil 12 moves to a position where power cannot be supplied to the power receiving coil 21, the switching element control unit 18 stops the on / off operation of the second switching element 17 (step S7). Then, this process ends.
本実施の形態において、受信認証リーダー１９は、電子機器２が配置されたことを検出する受電装置検出手段として機能する。 In the present embodiment, the reception authentication reader 19 functions as a power receiving device detection unit that detects that the electronic device 2 is disposed.
また、本実施の形態において、給電コイル１２は、受電コイル２１との間の電磁的吸引力、あるいは電磁的反発力により自ら移動することができる。 Further, in the present embodiment, the power feeding coil 12 can move by itself due to an electromagnetic attractive force with the power receiving coil 21 or an electromagnetic repulsive force.
また、本実施の形態において、スイッチング素子制御部１８は、電子機器２の受電電圧を検出する受電電圧検出手段として機能する。 In the present embodiment, the switching element control unit 18 functions as a received voltage detection unit that detects the received voltage of the electronic device 2.
スイッチング素子制御部１８により電子機器２の受電電圧が所定の電圧未満と判断された場合、給電コイル１２は、所定の電圧まで電子機器２に電力を供給する。また、電子機器２の受電電圧が所定の電圧以上と判断された場合、電力供給装置１は、給電コイル１２を電子機器２に電力供給することができない位置に移動させる。 When the switching element control unit 18 determines that the received voltage of the electronic device 2 is less than the predetermined voltage, the power feeding coil 12 supplies power to the electronic device 2 up to the predetermined voltage. When it is determined that the power reception voltage of the electronic device 2 is equal to or higher than the predetermined voltage, the power supply device 1 moves the power supply coil 12 to a position where power cannot be supplied to the electronic device 2.
また、送信認証タグ２８は、電力供給装置１に電子機器２が配置されたことを検出し、電力供給装置１にその旨送信する送信手段として機能する。 The transmission authentication tag 28 functions as a transmission unit that detects that the electronic device 2 is disposed in the power supply device 1 and transmits the detection to the power supply device 1.
本実施の形態においては、電力供給装置１を正位置として置いた状態で側面から見たときに、給電コイル１２を下方向に移動させることにより、受電コイル２１に電力を供給できないようにした。しかしながら、給電コイル１２を、前方向、後方向、左方向及び右方向の少なくとも一方に移動させることで、受電コイル２１に電力を供給できないようにしてもよい。 In the present embodiment, when viewed from the side with the power supply device 1 placed in the normal position, the power supply coil 12 is moved downward so that power cannot be supplied to the power reception coil 21. However, the power supply coil 12 may not be supplied with power by moving the power supply coil 12 in at least one of the front direction, the rear direction, the left direction, and the right direction.
また、本実施の形態では、給電コイル１２の位置を電力供給装置１の外部から確認できるようにしてもよい。この場合、ユーザは、給電コイル１２の位置によって、給電コイル１２が電力供給状態であるか否かを視覚的に判断することができる。給電コイル１２の位置を電力供給装置１の外部から確認できないようにする場合は、給電コイル１２が電力供給状態であるか否かを表示部（図示せず）に表示することもできる。 In the present embodiment, the position of the feeding coil 12 may be confirmed from the outside of the power supply device 1. In this case, the user can visually determine whether or not the power supply coil 12 is in a power supply state based on the position of the power supply coil 12. When the position of the power supply coil 12 cannot be confirmed from the outside of the power supply device 1, whether or not the power supply coil 12 is in a power supply state can be displayed on a display unit (not shown).
よって、本実施の形態の充電システムによれば、ユーザが電子機器２を受信認証リーダー１９が検出可能な範囲に置けば、給電コイル１２が、電池２５を充電することが可能な位置に移動し、電池２５を効率的に充電することができる。 Therefore, according to the charging system of the present embodiment, when the user places electronic device 2 in a range that can be detected by reception authentication reader 19, feeding coil 12 moves to a position where battery 25 can be charged. The battery 25 can be charged efficiently.
１ 電力供給装置
２ 電子機器
１１ 電源
１２ 給電コイル
２１ 受電コイル
２３ 第３のコイル
２５ 電池
２７ ＣＰＵ
DESCRIPTION OF SYMBOLS 1 Power supply apparatus 2 Electronic device 11 Power supply 12 Feeding coil 21 Power receiving coil 23 Third coil 25 Battery 27 CPU
Claims (2)
前記受電装置が配置されたことを検出する受電装置検出手段と、
前記受電装置に前記電磁誘導により電力を供給する給電コイルとを有し、
前記受電装置検出手段により前記受電装置が配置されたことが検出されると、前記給電コイルを前記受電装置に電力供給することが可能な位置に移動させることを特徴とする電力供給装置。 In a power supply device that supplies power to a power receiving device by electromagnetic induction,
A power receiving device detecting means for detecting that the power receiving device is disposed;
A power supply coil that supplies power to the power receiving device by the electromagnetic induction;
When the power receiving device is detected by the power receiving device detecting means, the power supply coil is moved to a position where power can be supplied to the power receiving device.
前記受電電圧検出手段により前記受電装置の前記受電電圧が所定の電圧未満と判断された場合、前記給電コイルは、前記所定の電圧まで前記受電装置に電力を供給し、
前記受電装置の前記受電電圧が所定の電圧以上と判断された場合、前記給電コイルを前記受電装置に電力供給することができない位置に移動させることを特徴とする請求項１に記載の電力供給装置。 A power receiving voltage detecting means for detecting a power receiving voltage of the power receiving device;
When the power reception voltage detection means determines that the power reception voltage of the power reception device is less than a predetermined voltage, the power supply coil supplies power to the power reception device up to the predetermined voltage,
2. The power supply device according to claim 1, wherein when the power reception voltage of the power reception device is determined to be equal to or higher than a predetermined voltage, the power supply coil is moved to a position where power cannot be supplied to the power reception device. .
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