JP3923402B2 - Power supply device and data communication system - Google Patents

Power supply device and data communication system Download PDF

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Publication number
JP3923402B2
JP3923402B2 JP2002290930A JP2002290930A JP3923402B2 JP 3923402 B2 JP3923402 B2 JP 3923402B2 JP 2002290930 A JP2002290930 A JP 2002290930A JP 2002290930 A JP2002290930 A JP 2002290930A JP 3923402 B2 JP3923402 B2 JP 3923402B2
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Prior art keywords
communication
charging
oscillation
power supply
terminal device
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JP2003134681A (en
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誉雄 前川
幹夫 成瀬
信彦 藤井
聡 吉原
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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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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Description

【０００１】
【発明の属する技術分野】
本発明は、端末装置および給電装置に関するものであり、特に電磁誘導を利用した非接触充電方式を用いた端末装置および給電装置に関するものである。
【０００２】
【従来の技術】
近年、携帯端末のみならず、コードレス電話、電動歯ブラシなど電池を電源に用いる製品において防水性の向上や充電端子での短絡などを防止するため、電磁誘導を用いた非接触式の充電方式が多く用いられるようになってきている。
【０００３】
【発明が解決しようとする課題】
充電中に端末装置と給電装置間で光通信などを行おうとした際に、通信用の半導体などが磁界の影響を受け、通信成功率の低下などの現象が起こりやすくなる。
【０００４】
本発明は上記のような課題に鑑み、磁界の影響を抑制し充電動作と通信などの動作を同時に行う携帯端末装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を解決するために、本発明の給電装置は、データ通信用端末装置の充電用共振手段を電磁誘導により共振させて電流を誘起する充電用発振手段と、前記充電用発振手段に電力を供給する電源供給手段と、前記充電用発振手段の発振を制御する発振制御手段と、前記データ通信用端末装置とデータ通信する通信手段とを備え、前記発信制御手段は前記通信手段の通信状態によって発振する磁界の強さを制御することで充電と通信とを同時に行うことを可能としたものである。
【０００６】
また、本発明のデータ通信システムは、データ通信用端末装置と、前記データ通信用端末装置とデータ通信を行う外部装置と、前記データ通信用端末装置の充電用共振手段を電磁誘導により共振させて電流を誘起する充電用発振手段と、前記充電用発振手段に電力を供給する電源供給手段と、前記データ通信用端末装置と前記外部装置との通信状態により前記充電用発振手段の発振を制御することで充電と通信とを同時に行うことを可能とした発振制御手段とを備えた、給電装置とからなるものである。
【０００７】
【発明の実施の形態】
（実施の形態１）
次に、本発明の第１の実施の形態について、図１と図２を使用して説明する。
【０００８】
図１は本発明の第１の実施の形態における端末装置および給電装置の構成を示すブロック図である。
【０００９】
図１は同給電装置の発振制御手段の構成図である。
端末装置１が給電装置２に置かれると、端末装置１のデータ処理手段１９と例えば光通信などの通信手段２０および給電装置２のデータ処理手段２１と通信手段２２により端末装置１と給電装置２間で通信が行われ、低電圧供給手段２３による充電用発振手段３への電力供給が行われ、発振が始まる。このとき、低電圧で発振させているため発生する磁界は通信に影響が出ない程度の磁界になる。端末装置１の充電用共振手段４は電磁誘導により電流を誘起する。誘起された電流は充電制御手段１６により制御され、電池１７に充電される。
【００１０】
端末装置１と給電装置２間で必要なデータについて通信を終えると、給電装置２は高電圧供給手段２３から充電用発振手段３への電力供給に切換える。このとき発生する磁界は低電圧の時より強くなるため、端末装置１の得られる電流も大きくなり、通信中の時より急速に充電を行うことができる。
【００１１】
このように充電中の磁界の強さを制御するので、通信中などにおいて磁界の強さを制御し影響を抑えることにより、充電動作と通信動作などを同時に行うことができ、通信が終わると急速充電を行うことができる。
【００１２】
なお本実施の形態では端末装置１と給電装置２間での通信を例としているが、例えば端末装置１に無線通信手段が備えてあり、充電中に給電装置２以外の無線通信手段を備えている装置との間で無線通信を行う場合にも、上記と同様磁界の強度を変えることにより無線への磁界の影響を抑え、充電動作と無線通信を同時に行うことができる。
【００１３】
なお、磁界の強さを変えることによって温度上昇も変化するので、例えば、冬季には高電圧による充電を行い、温度上昇の厳しい夏期には低電圧による充電を行うなど、季節・時間・場所などによって充電時の磁界の強さを変更することもできる。
（実施の形態２）
次に、本発明の第２の実施の形態について、図３を使用して説明する。
【００１４】
図３は本発明の第２の実施の形態における端末装置および給電装置の構成を示すブロック図である。
【００１５】
発振が始まるまでの動作は第１の実施の形態と同様のため説明を省略する。データ処理手段１９や通信手段２０などへの電池１７からの電力供給をＯＮ／ＯＦＦする電源ＯＮ／ＯＦＦ手段２５がＯＦＦの状態での端末装置１が給電装置２に置かれると、給電装置２の発振が始まる。端末装置１の充電用共振手段４が共振すると、充電制御手段１６に電流を供給すると同時に、共振検出手段２６によって共振が始まったことを検出する。共振検出手段２６は、データ処理手段１９や通信手段２０などへの電池１７からの電力供給をＯＮ／ＯＦＦする電源ＯＮ／ＯＦＦ手段２５をＯＮ動作し、データ処理手段１９や通信手段２０などが動作し始め、端末装置１と給電装置２間との通信が始まる。
【００１６】
さらに具体的な例を説明する。
端末装置１内に蓄積したデータを給電装置２を通して他のコンピュータなどへ通信する場合に、作業者は端末装置１の電源ＯＮ／ＯＦＦ状態を気にすることなく給電装置２に置く。給電装置２に置かれた端末装置１は上記動作により自動的に電源ＯＮ状態になり、給電装置２を通してコンピュータへデータの送信を始める。データの送信を終了すると、端末装置１は自動的に電源をＯＦＦする。この間も給電装置からの電磁誘導による電力供給は行われている。
【００１７】
このように、電源がＯＦＦの状態で端末装置１側で給電装置２に置かれたことを検出することができ、また検出に物理的なスイッチなどを必要とせず、端末装置１の防水性を向上させデザインの自由度を向上させることができる。
【００１８】
【発明の効果】
本発明によれば、発振制御手段により磁界の強さを制御
するので、通信中などにおいて磁界の強さを制御し影響を抑えることにより充電と通信を同時に行うことができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態における端末装置および給電装置の構成を示すブロック図
【図２】同給電装置の発振制御手段の構成図
【図３】本発明の第２の実施の形態における端末装置および給電装置の構成を示すブロック図
【符号の説明】
１ 端末装置
２ 給電装置
３ 充電用発振手段（発振用コイル）
４ 充電用共振手段（共振用コイル）
１５ 電源供給手段
１６ 充電制御手段
１７ 電池
１８ 発振制御手段
１９ 端末装置のデータ処理手段
２０ 端末装置の通信手段
２１ 給電装置のデータ処理手段
２２ 給電装置の通信手段
２３ 低電圧供給手段
２４ 高電圧供給手段
２５ 電源ON/OFF手段
２６ 共振検出手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal device and a power feeding device, and more particularly to a terminal device and a power feeding device using a non-contact charging method using electromagnetic induction.
[0002]
[Prior art]
In recent years, not only mobile terminals but also cordless phones, electric toothbrushes, and other products that use batteries as power sources, there are many non-contact charging methods using electromagnetic induction in order to prevent waterproofing and prevent short circuits at charging terminals. It has come to be used.
[0003]
[Problems to be solved by the invention]
When optical communication or the like is performed between the terminal device and the power supply device during charging, a communication semiconductor or the like is affected by a magnetic field, and a phenomenon such as a decrease in communication success rate is likely to occur.
[0004]
In view of the above problems, an object of the present invention is to provide a portable terminal device that suppresses the influence of a magnetic field and simultaneously performs a charging operation and an operation such as communication.
[0005]
[Means for Solving the Problems]
In order to solve the above-described object, a power supply device according to the present invention includes a charging oscillation unit that resonates a charging resonance unit of a data communication terminal device by electromagnetic induction to induce a current, and supplies power to the charging oscillation unit. and a power supply means for supplying an oscillation control means for controlling the oscillation of the charging oscillating means, and a communication means for the terminal device and the data communication for data communication, the transmitting control unit by the communication state of the communication means By controlling the strength of the oscillating magnetic field, charging and communication can be performed simultaneously.
[0006]
In the data communication system of the present invention, a data communication terminal device, an external device that performs data communication with the data communication terminal device, and a charging resonance means of the data communication terminal device are caused to resonate by electromagnetic induction. The charging oscillation means for inducing current, the power supply means for supplying power to the charging oscillation means, and the oscillation of the charging oscillation means are controlled by the communication state between the data communication terminal device and the external device Thus , the power supply device includes an oscillation control unit that can perform charging and communication at the same time .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
Next, a first embodiment of the present invention will be described with reference to FIGS.
[0008]
FIG. 1 is a block diagram showing configurations of a terminal device and a power feeding device according to the first embodiment of the present invention.
[0009]
FIG. 1 is a configuration diagram of oscillation control means of the power feeding apparatus.
When the terminal device 1 is placed on the power supply device 2, the terminal device 1 and the power supply device 2 are connected by the data processing means 19 of the terminal device 1, the communication means 20 such as optical communication, the data processing means 21 of the power supply device 2, and the communication means 22. Communication is performed between them, power is supplied to the charging oscillation means 3 by the low voltage supply means 23, and oscillation starts. At this time, since the oscillation is performed at a low voltage, the generated magnetic field is a magnetic field that does not affect communication. The charging resonance means 4 of the terminal device 1 induces a current by electromagnetic induction. The induced current is controlled by the charge control means 16 and the battery 17 is charged.
[0010]
When communication is completed for necessary data between the terminal device 1 and the power supply device 2, the power supply device 2 switches to power supply from the high voltage supply means 23 to the charging oscillation means 3. Since the magnetic field generated at this time is stronger than when the voltage is low, the current obtained by the terminal device 1 is also increased, and charging can be performed more rapidly than during communication.
[0011]
Since the strength of the magnetic field during charging is controlled in this way, the charging operation and the communication operation can be performed simultaneously by controlling the magnetic field strength during communication and suppressing the influence. Charging can be performed.
[0012]
In this embodiment, communication between the terminal device 1 and the power feeding device 2 is taken as an example. However, for example, the terminal device 1 includes a wireless communication unit, and a wireless communication unit other than the power feeding device 2 is provided during charging. Even when wireless communication is performed with a device that is connected, the influence of the magnetic field on the wireless can be suppressed by changing the intensity of the magnetic field as described above, and the charging operation and the wireless communication can be performed simultaneously.
[0013]
The temperature rise also changes by changing the strength of the magnetic field, so for example, charging with high voltage in winter and charging with low voltage in summer when temperature rise is severe, such as season, time, place, etc. It is also possible to change the strength of the magnetic field during charging.
(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG.
[0014]
FIG. 3 is a block diagram showing the configuration of the terminal device and the power feeding device according to the second embodiment of the present invention.
[0015]
Since the operation until the oscillation starts is the same as that of the first embodiment, the description is omitted. When the terminal device 1 with the power ON / OFF means 25 for turning ON / OFF the power supply from the battery 17 to the data processing means 19 and the communication means 20 is placed in the power supply apparatus 2, the power supply apparatus 2 Oscillation starts. When the charging resonance means 4 of the terminal device 1 resonates, a current is supplied to the charging control means 16 and at the same time, the resonance detection means 26 detects that resonance has started. The resonance detection means 26 turns on the power ON / OFF means 25 for turning on / off the power supply from the battery 17 to the data processing means 19 and the communication means 20, and the data processing means 19 and the communication means 20 are operated. Then, communication between the terminal device 1 and the power feeding device 2 starts.
[0016]
A more specific example will be described.
When communicating data stored in the terminal device 1 to another computer or the like through the power supply device 2, the worker puts the data in the power supply device 2 without worrying about the power ON / OFF state of the terminal device 1. The terminal device 1 placed on the power supply device 2 is automatically turned on by the above operation, and starts transmitting data to the computer through the power supply device 2. When the data transmission is completed, the terminal device 1 automatically turns off the power. During this time, power supply by electromagnetic induction from the power feeding device is performed.
[0017]
In this way, it is possible to detect that the terminal device 1 is placed on the power supply device 2 in the state where the power is off, and it is not necessary to use a physical switch or the like for the detection. The degree of freedom in design can be improved.
[0018]
【The invention's effect】
According to the present invention, since the strength of the magnetic field is controlled by the oscillation control means, charging and communication can be performed simultaneously by controlling the strength of the magnetic field and suppressing the influence during communication or the like.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the configuration of a terminal device and a power feeding device according to a first embodiment of the present invention. FIG. 2 is a configuration diagram of oscillation control means of the power feeding device. Block diagram showing the configuration of the terminal device and the power supply device in the form of
1 Terminal Device 2 Power Supply Device 3 Charging Oscillating Means (Oscillation Coil)
4 Charging resonance means (resonance coil)
DESCRIPTION OF SYMBOLS 15 Power supply means 16 Charge control means 17 Battery 18 Oscillation control means 19 Data processing means 20 of a terminal device Communication means 21 of a terminal device Data processing means 22 of a power supply device Communication means 23 of a power supply device Low voltage supply means 24 High voltage supply means 25 Power ON / OFF means 26 Resonance detection means

Claims (1)

端末装置の充電用共振手段を電磁誘導により共振させて電流を誘起する充電用発振手段と、前記充電用発振手段に電力を供給する電源供給手段と、前記充電用発振手段の発振を制御する発振制御手段と、前記端末装置とデータ通信する通信手段とを備え、前記発振制御手段は前記通信手段の通信状態によって発振する磁界の強さを制御することで充電と通信とを同時に行うことを可能とした給電装置において、
前記発振制御手段は、前記通信手段の通信状態において当該通信に影響しない所定の強さの磁界を前記充電発振手段に発生させ、かつ、前記通信手段の非通信状態において上記所定の強さ以上の磁界を前記充電発振手段に発生させることを特徴とする給電装置。Charging oscillation means for inducing current by resonating the charging resonance means of the terminal device by electromagnetic induction, power supply means for supplying power to the charging oscillation means, and oscillation for controlling oscillation of the charging oscillation means Control means and communication means for data communication with the terminal device, and the oscillation control means can simultaneously perform charging and communication by controlling the strength of the magnetic field oscillating according to the communication state of the communication means in the power feeding apparatus and,
The oscillation control unit causes the charging oscillation unit to generate a magnetic field having a predetermined strength that does not affect the communication in the communication state of the communication unit, and is greater than or equal to the predetermined strength in the non-communication state of the communication unit. A power supply apparatus that generates a magnetic field in the charging oscillation means .
JP2002290930A 1997-09-16 2002-10-03 Power supply device and data communication system Expired - Lifetime JP3923402B2 (en)

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JP25022597A JP3430877B2 (en) 1997-09-16 1997-09-16 Terminal device and power supply device
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