JP2007336710A - Battery pack, electronic apparatus and non-contact charging system - Google Patents

Battery pack, electronic apparatus and non-contact charging system Download PDF

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JP2007336710A
JP2007336710A JP2006166063A JP2006166063A JP2007336710A JP 2007336710 A JP2007336710 A JP 2007336710A JP 2006166063 A JP2006166063 A JP 2006166063A JP 2006166063 A JP2006166063 A JP 2006166063A JP 2007336710 A JP2007336710 A JP 2007336710A
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power
charger
charging
electronic device
authentication
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JP4777155B2 (en
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Hiroyuki Takahashi
裕行 高橋
Masanori Oshimi
正典 押味
Hiroyuki Oku
啓之 奥
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Panasonic Holdings Corp
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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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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus which can cope with both contact and non-contact charging systems, and to provide a noncontact charging system. <P>SOLUTION: A cellular phone 1a is the electronic apparatus where a battery cell 24 of a secondary battery can be used as a power supply. Power supplied from a noncontact charger 4 is inputted from a terminal CH, and power supplied from a contact charger 3 is inputted to an outer connection terminal 11. A switching circuit 13 selects either the power supplied from the terminal CH or the power supplied from the outer connection terminal 11, and outputs it to a charging circuit 14. The charging circuit 14 charges the power, supplied through the switching circuit 13, to the battery cell of the battery pack 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、非接触型の充電器から供給される電力を充電可能な電池パック、電子機器及び非接触充電システムに関する。   The present invention relates to a battery pack, an electronic device, and a contactless charging system that can charge power supplied from a contactless charger.

携帯電話等の携帯型の電子機器には、その電源を確保するために、通常、繰り返し充放電が可能な二次電池が用いられている。そして、二次電池への充電するシステムとして、電子機器と非接触状態で二次電池を充電することのできる非接触充電システムが考案されている。   2. Description of the Related Art Secondary batteries that can be repeatedly charged and discharged are usually used for portable electronic devices such as cellular phones in order to secure the power supply. As a system for charging the secondary battery, a non-contact charging system that can charge the secondary battery in a non-contact state with an electronic device has been devised.

このような非接触充電システムは、電動シェーバ等といった、充電端子の露出を避けることが望ましい機器を中心に普及しているが、今後、携帯電話のような機器にも普及していくことが予想される。例えば、特許文献１，２には、非接触充電システムが採用された携帯電話が記載されている。   Such a non-contact charging system is widely used mainly for devices such as an electric shaver where it is desirable to avoid exposure of the charging terminal, but it is expected that it will also be used in devices such as mobile phones in the future. Is done. For example, Patent Documents 1 and 2 describe a mobile phone that employs a non-contact charging system.

特開２００５−１４３１８１号公報JP-A-2005-143181 特開２００６−１１５５６２号公報JP 2006-115562 A

ホテルや外食店舗等にて、携帯電話への充電サービスが提供されているが、携帯電話等の電子機器は、現状では接触型の充電システムが中心となっているため、このような充電サービスにおいて非接触充電システムに完全に対応するまでには時間を要する。したがって、非接触充電システムを採用した携帯電話の使用者が、専用の充電器を携帯していない場合には、外出先での充電ができなくなってしまうという事情があり得る。   Although charging services for mobile phones are provided at hotels and restaurants, etc., electronic devices such as mobile phones are currently mainly contact-type charging systems. It takes time to fully support a contactless charging system. Therefore, when the user of the mobile phone adopting the non-contact charging system does not carry a dedicated charger, there may be a situation that charging on the go cannot be performed.

また、二次電池や、充電を受ける電子機器に異常が生じたときに、通常、過電流や発熱を検出して二次電池への充電を停止させる保護回路が設けられており、非接触型充電システムでは、電子機器側に異常が生じても、充電器においてその異常を検出することができず、電力を供給し続けてしまうという事情がある。   In addition, when an abnormality occurs in a secondary battery or an electronic device that is charged, a protection circuit that normally detects overcurrent and heat generation and stops charging the secondary battery is provided. In the charging system, even if an abnormality occurs on the electronic device side, the charger cannot detect the abnormality and continues to supply power.

本発明は、上記の事情に鑑みてなされたものであって、接触型及び非接触型の両方の充電方式に対応可能な電子機器及び非接触充電システムを提供することを目的とする。また、充電器において不要な電力供給を抑制することが可能な電池パック、電子機器及び非接触充電システムを提供することを目的とする。   The present invention has been made in view of the above circumstances, and an object thereof is to provide an electronic device and a non-contact charging system that are compatible with both a contact type and a non-contact type charging method. It is another object of the present invention to provide a battery pack, an electronic device, and a non-contact charging system that can suppress unnecessary power supply in a charger.

本発明は、第１に、二次電池を電源として使用可能な電子機器であって、非接触型の充電器から供給される電力が入力される第一の電源入力部と、接触型の充電器から供給される電力が入力される第二の電源入力部と、前記第一の電源入力部から供給される電力及び前記第二の電源入力部から供給される電力のいずれか一方を選択して、前記二次電池に供給する電源入力選択部とを備える電子機器が提供されるものである。   The present invention is, firstly, an electronic device that can use a secondary battery as a power source, and includes a first power input unit to which power supplied from a non-contact type charger is input, and a contact type charging. The second power input unit to which the power supplied from the power supply is input, the power supplied from the first power input unit, and the power supplied from the second power input unit are selected. In addition, an electronic device including a power input selection unit that supplies the secondary battery is provided.

この構成により、接触型及び非接触型の両方の充電方式に対応可能であり、また、充電方式のうち、いずれか一方の入力のみを選択するので、一度に両方の電源入力部から電力が入力されるような場合でも、安全に充電を行うことができる。   With this configuration, it is possible to support both contact and non-contact charging methods, and since only one of the charging methods is selected, power is input from both power input units at once. Even in such a case, charging can be performed safely.

本発明は、第２に、上記第１に記載の電子機器であって、前記電源入力選択部は、前記第二の電源入力部からの電力の入力が検出されたとき、前記第二の電源入力部を選択する電子機器が提供されるものである。   The second aspect of the present invention is the electronic device according to the first aspect described above, wherein the power input selection unit detects the second power source when an input of power from the second power source input unit is detected. An electronic device for selecting an input unit is provided.

この構成により、第二の電源入力部から入力される電力、すなわち、接触型の充電器からの電力供給を優先的に選択することができる。   With this configuration, it is possible to preferentially select the power input from the second power input unit, that is, the power supply from the contact charger.

本発明は、第３に、上記第１又は第２に記載の電子機器であって、前記二次電池は、前記二次電池に電力を供給する電力供給端子を有する電池パックに収容され、前記電源入力選択部から出力された、前記第一の電源入力部又は前記第二の電源入力部からの電力を、前記電池パックの電力供給端子へ出力し、前記二次電池に対する充電を制御する充電回路を更に備える電子機器が提供されるものである。   Thirdly, the electronic device according to the first or second aspect, wherein the secondary battery is housed in a battery pack having a power supply terminal for supplying power to the secondary battery, Charging that outputs power from the first power input unit or the second power input unit output from the power input selection unit to the power supply terminal of the battery pack and controls charging of the secondary battery An electronic device further provided with a circuit is provided.

この構成により、電池パックに収容された二次電池に対する充電制御を行う充電回路は、非接触式及び接触式の充電器からの入力の両方を兼用するので、装置の大型化やコストアップを防ぐことができる。   With this configuration, the charging circuit that performs charging control for the secondary battery housed in the battery pack serves as both an input from the non-contact type and the contact type charger, thereby preventing an increase in size and cost of the device. be able to.

本発明は、第４に、非接触型の充電器から供給される電力を充電可能な二次電池を有する電池パックであって、前記二次電池に対する充電状態を監視する保護回路と、前記充電器との間で通信を行い、前記充電器からの電力供給を許可する認証を行う認証部と、前記保護回路により充電状態に異常が検出された場合に、前記認証部における前記認証を不成立とする電池制御部とを備える電池パックが提供されるものである。   Fourthly, the present invention provides a battery pack having a secondary battery capable of charging electric power supplied from a non-contact charger, the protection circuit for monitoring the charging state of the secondary battery, and the charging An authentication unit that performs authentication between the charger and the power supply from the charger, and when the abnormality is detected in the charging state by the protection circuit, the authentication in the authentication unit is not established. A battery pack including a battery control unit is provided.

この構成により、電池パックに異常が生じたときに、充電器との認証を不成立とするので、充電器において電力供給すべきでない状況を認識することが可能となり、不要な電力供給を抑制し、充電器における消費電力を軽減することができる。   With this configuration, when an abnormality occurs in the battery pack, authentication with the charger is not established, so that it is possible to recognize a situation where power should not be supplied in the charger, suppressing unnecessary power supply, Power consumption in the charger can be reduced.

本発明は、第５に、上記第４に記載の電池パックであって、前記非接触型の充電器との間で電磁結合して電力の供給を受けるコイルを更に有し、前記認証部は、認証情報を、前記コイルを介して前記充電器に送信する電池パックが提供されるものである。   Fifth, the present invention is the battery pack according to the fourth aspect, further comprising a coil that is electromagnetically coupled to the contactless charger and receives power supply, and the authentication unit includes A battery pack for transmitting authentication information to the charger via the coil is provided.

この構成により、非接触充電に要するコイルを用いて充電器との間で通信を行って認証するので、認証用の通信手段を新たに設ける必要がない。   With this configuration, since authentication is performed by performing communication with the charger using a coil required for non-contact charging, there is no need to newly provide a communication means for authentication.

本発明は、第６に、上記第４又は第５に記載の電池パックを着脱自在に装着可能な電子機器が提供されるものである。   Sixthly, the present invention provides an electronic apparatus in which the battery pack according to the fourth or fifth aspect can be detachably mounted.

この構成により、不要な電力供給を抑制し、充電器における消費電力を軽減することができる。   With this configuration, unnecessary power supply can be suppressed and power consumption in the charger can be reduced.

本発明は、第７に、上記第６に記載の電子機器であって、前記電子機器の異常を監視し、前記異常が検出された際に、前記保護回路に対して、前記充電状態に異常が発生したことを認識させる制御信号を出力する異常検出回路を更に備える電子機器が提供されるものである。   Seventhly, the present invention relates to the electronic device according to the sixth aspect, wherein an abnormality of the electronic device is monitored, and when the abnormality is detected, the protection circuit is abnormally detected in the charge state. There is provided an electronic apparatus that further includes an abnormality detection circuit that outputs a control signal for recognizing the occurrence of the error.

この構成により、電子機器側に異常が生じた場合にも、保護回路において異常検出した状態と同様に認証を不成立にすることにより、充電器において電力供給すべきでない状況を認識することが可能となり、不要な電力供給を抑制し、充電器における消費電力を軽減することができる。   With this configuration, even when an abnormality occurs on the electronic device side, it is possible to recognize a situation where power should not be supplied to the charger by disabling authentication in the same manner as when the abnormality is detected in the protection circuit. Unnecessary power supply can be suppressed and power consumption in the charger can be reduced.

本発明は、第８に、上記第１，第２，第３，第６又は第７に記載の電子機器と、電磁エネルギーにより、前記電子機器に対して電力を供給する充電器とを備える非接触充電システムが提供されるものである。   Eighth, the present invention includes: the electronic device according to the first, second, third, sixth, or seventh; and a charger that supplies electric power to the electronic device by electromagnetic energy. A contact charging system is provided.

このシステムにより、接触型及び非接触型の両方の充電方式に対応可能であり、また、充電方式のうち、いずれか一方の入力のみを選択するので、一度に両方の電源入力部から電力が入力されるような場合でも、安全に充電を行うことができる。また、電池パックに異常が生じたときに、充電器との認証を不成立とするので、充電器において電力供給すべきでない状況を認識することが可能となり、不要な電力供給を抑制し、充電器における消費電力を軽減することができる。   This system is compatible with both contact and non-contact charging methods, and only one of the charging methods is selected, so power is input from both power input units at once. Even in such a case, charging can be performed safely. In addition, when an abnormality occurs in the battery pack, authentication with the charger is not established, so that it is possible to recognize a situation where power should not be supplied in the charger, suppressing unnecessary power supply, Power consumption can be reduced.

本発明によれば、接触型及び非接触型の両方の充電方式に対応可能な電子機器及び非接触充電システムを提供することができる。また、充電器において不要な電力供給を抑制することが可能な電池パック、電子機器及び非接触充電システムを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the electronic device and non-contact charge system which can respond to both a contact-type and non-contact-type charge system can be provided. In addition, a battery pack, an electronic device, and a non-contact charging system that can suppress unnecessary power supply in the charger can be provided.

以下、図面を参照して、本発明の実施形態に係る電池パック、電子機器及び非接触充電システムについて説明する。以下の実施形態では、電子機器の一例として、携帯電話について説明する。しかしながら、本実施形態に係る電子機器は、携帯情報端末（ＰＤＡ：Personal Digital Assistant）等、二次電池を電源とする種々の電子機器に適用可能である。   Hereinafter, a battery pack, an electronic device, and a non-contact charging system according to embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a mobile phone will be described as an example of an electronic device. However, the electronic device according to the present embodiment can be applied to various electronic devices that use a secondary battery as a power source, such as a personal digital assistant (PDA).

（第１の実施形態）
図１は本発明の第１の実施形態に係る充電システムの概要を説明するブロック図、図２は本発明の第１の実施形態に係る非接触充型電器の非接触充電回路の主要な構成を示すブロック図、図３は本発明の第１の実施形態に係る携帯電話の非接触充電回路の主要な構成を示すブロック図である。 (First embodiment)
FIG. 1 is a block diagram for explaining an outline of a charging system according to a first embodiment of the present invention, and FIG. 2 is a main configuration of a contactless charging circuit of a contactless charging apparatus according to the first embodiment of the present invention. FIG. 3 is a block diagram showing a main configuration of the non-contact charging circuit of the mobile phone according to the first embodiment of the present invention.

図１に示すように、本実施形態の充電システムは、携帯電話１ａと、携帯電話１ａに着脱自在に装着される電池パック２と、接触型充電器３と、非接触型充電器４とを備える。携帯電話１ａは、接触型充電器３に接触して電力の供給を受けて電池パック２の二次電池に充電し、また、非接触型充電器４と非接触の状態で電力の供給を受けて電池パック２の二次電池に充電することができる。   As shown in FIG. 1, the charging system of the present embodiment includes a mobile phone 1a, a battery pack 2 that is detachably attached to the mobile phone 1a, a contact charger 3, and a non-contact charger 4. Prepare. The mobile phone 1a contacts the contact charger 3 and receives power supply to charge the secondary battery of the battery pack 2, and receives power supply in a non-contact state with the non-contact charger 4. The secondary battery of the battery pack 2 can be charged.

接触型充電器３は、交流電源５１に接続され、交流電力を直流電力に変換するＡＣアダプタ３１と、ＡＣアダプタ３１から出力される直流電力を外部へ供給する電力供給端子を備える。   The contact charger 3 is connected to an AC power source 51 and includes an AC adapter 31 that converts AC power into DC power, and a power supply terminal that supplies DC power output from the AC adapter 31 to the outside.

非接触型充電器４は、ＡＣアダプタ４１と、非接触充電回路４２と、コイル４３と、温度検出部４４と、制御部４５とを備える。   The non-contact charger 4 includes an AC adapter 41, a non-contact charging circuit 42, a coil 43, a temperature detection unit 44, and a control unit 45.

ＡＣアダプタ４１は、交流電源５２に接続され、交流電力を直流電力に変換し、非接触充電回路４２に出力する。なお、ＡＣアダプタ４１と他の要素とは、別の筐体に設けられ、ＡＣアダプタ４１と、非接触充電回路４２とが電源ケーブルを介して接続されてもよい。   The AC adapter 41 is connected to the AC power source 52, converts AC power into DC power, and outputs the DC power to the non-contact charging circuit 42. The AC adapter 41 and other elements may be provided in separate housings, and the AC adapter 41 and the non-contact charging circuit 42 may be connected via a power cable.

非接触充電回路４２は、図２に示すように、変換回路４２１と、認証部４２２とを有する。変換回路４２１は、ＡＣアダプタ４１から出力された直流電力を、所定の交流電力に変換し、コイル４３に出力する。また、制御部４５からの指示に従って、コイル４３に対する電力の供給のオン／オフを切り換える。認証部４２２は、制御部４５からの指示に従ってコイル４３を介して電池パック２と通信を行い、電池パック２に対する電力供給を許可するための認証を行う。そして、認証した結果を制御部４５に通知する。   As illustrated in FIG. 2, the non-contact charging circuit 42 includes a conversion circuit 421 and an authentication unit 422. The conversion circuit 421 converts the DC power output from the AC adapter 41 into predetermined AC power and outputs it to the coil 43. Further, in accordance with an instruction from the controller 45, the power supply to the coil 43 is switched on / off. The authentication unit 422 communicates with the battery pack 2 through the coil 43 in accordance with an instruction from the control unit 45 and performs authentication for permitting power supply to the battery pack 2. Then, the controller 45 is notified of the authenticated result.

コイル４３は、非接触充電回路４２から出力された交流電力を電磁エネルギーとして放出する一次コイルとして機能する。温度検出部４４は、非接触型充電器４の内部の温度を検出し、制御部４５へ検出結果を通知する。   The coil 43 functions as a primary coil that discharges AC power output from the non-contact charging circuit 42 as electromagnetic energy. The temperature detection unit 44 detects the temperature inside the non-contact charger 4 and notifies the control unit 45 of the detection result.

制御部４５は、非接触充電回路４２の動作を制御するものであり、温度検出部４４から入力された温度検出結果が所定の温度以上であれば、変換回路４２１におけるコイル４３に対する電力の供給をオフに設定する。   The control unit 45 controls the operation of the non-contact charging circuit 42. If the temperature detection result input from the temperature detection unit 44 is equal to or higher than a predetermined temperature, the conversion circuit 421 supplies power to the coil 43. Set it to off.

電池パック２は、コイル２１と、非接触充電回路２２と、保護回路２３と、電池セル２４と、電池制御部２５とを備える。また、電池パック２は、携帯電話１ａと、端子ＣＨ、端子Ｔ、端子＋及び端子−にて電気的に接続される。なお、端子＋及び端子−は、電池セル２４に対して電力を供給するための電力供給端子の一例として機能する。   The battery pack 2 includes a coil 21, a non-contact charging circuit 22, a protection circuit 23, a battery cell 24, and a battery control unit 25. Further, the battery pack 2 is electrically connected to the mobile phone 1a through the terminal CH, the terminal T, the terminal +, and the terminal −. Note that the terminal + and the terminal − function as an example of a power supply terminal for supplying power to the battery cell 24.

コイル２１は、非接触型充電器４に備えられたコイル４３との間で電磁結合して電力の供給を受ける二次コイルとして機能し、供給された交流電力を非接触充電回路２２に出力する。   The coil 21 functions as a secondary coil that is electromagnetically coupled with the coil 43 provided in the contactless charger 4 and receives power supply, and outputs the supplied AC power to the contactless charging circuit 22. .

非接触充電回路２２は、図３に示すように、整流回路２２１と、レギュレータ２２２と、認証部２２３とを有する。整流回路２２１は、コイル２１から出力された交流電力を、直流電力に変換し、レギュレータ２２２に出力する。レギュレータ２２２は、整流回路２２１の出力と端子ＣＨとの間に接続され、整流回路２２１から出力された直流電力を端子ＣＨに出力する。なお、この端子ＣＨへの直流電力の供給は、電池制御部２５からの指示に従ってオン／オフが切り換えられる。認証部２２３は、制御部２５からの指示に従ってコイル２１を介して非接触型充電器４と通信を行い、非接触型充電器４からの電力供給を許可する認証を行う。そして、認証した結果を電池制御部２５に通知する。   As illustrated in FIG. 3, the non-contact charging circuit 22 includes a rectifier circuit 221, a regulator 222, and an authentication unit 223. The rectifier circuit 221 converts AC power output from the coil 21 into DC power and outputs the DC power to the regulator 222. The regulator 222 is connected between the output of the rectifier circuit 221 and the terminal CH, and outputs the DC power output from the rectifier circuit 221 to the terminal CH. The supply of DC power to the terminal CH is switched on / off in accordance with an instruction from the battery control unit 25. The authentication unit 223 communicates with the non-contact charger 4 via the coil 21 in accordance with an instruction from the control unit 25 and performs authentication for permitting power supply from the non-contact charger 4. Then, the battery control unit 25 is notified of the authenticated result.

保護回路２３は、携帯電話１ａの端子＋及び端子−から受けた電力を、電池セル２４に供給して充電する。また、保護回路２３は温度検出器や過電流検出器を有して電池セル２４への充電状態を監視し、高温や過電流を検出して異常が発生したと判定した場合に、電池セル２４への充電を停止する。なお、異常検出したときの異常検出信号は、電池制御部２５へ出力されると共に、端子Ｔを介して携帯電話１ｂに出力される。   The protection circuit 23 supplies the battery cell 24 with the power received from the terminal + and the terminal − of the mobile phone 1 a and charges it. Further, the protection circuit 23 has a temperature detector and an overcurrent detector, monitors the charge state of the battery cell 24, detects the high temperature and overcurrent, and determines that an abnormality has occurred, the battery cell 24 Stop charging. An abnormality detection signal when an abnormality is detected is output to the battery control unit 25 and is also output to the mobile phone 1b via the terminal T.

電池セル２４は、保護回路２３を介して充電され、繰り返し充放電が可能となる二次電池の一例として機能する。   The battery cell 24 functions as an example of a secondary battery that is charged via the protection circuit 23 and can be repeatedly charged and discharged.

電池制御部２５は、非接触充電回路２２の動作を制御するものであり、保護回路２３により充電状態に異常が検出された場合には、レギュレータ２２２における端子ＣＨに対する電力の供給をオフに設定する。   The battery control unit 25 controls the operation of the non-contact charging circuit 22, and when abnormality is detected in the charging state by the protection circuit 23, the power supply to the terminal CH in the regulator 222 is set to off. .

携帯電話１ａは、外部接続端子１１と、外部接続端子１１と、接続検出部１２と、切替回路１３と、充電回路１４と、制御部１５とを備える。   The mobile phone 1a includes an external connection terminal 11, an external connection terminal 11, a connection detection unit 12, a switching circuit 13, a charging circuit 14, and a control unit 15.

端子ＣＨは、非接触型充電器４から供給される電力が入力される第一の電源入力部の一例として機能するものであり、電池パック２の非接触充電回路２２にて変換された直流電力が入力される。   The terminal CH functions as an example of a first power input unit to which the power supplied from the non-contact charger 4 is input, and the DC power converted by the non-contact charging circuit 22 of the battery pack 2. Is entered.

外部接続端子１１は、接触型充電器３から供給される電力が入力される第二の電源入力部の一例として機能するものであり、接触型充電器３の電力供給端子３２に直接接触することにより、接触型充電器３から直流電力が入力される。   The external connection terminal 11 functions as an example of a second power input unit to which power supplied from the contact charger 3 is input, and directly contacts the power supply terminal 32 of the contact charger 3. Thus, DC power is input from the contact charger 3.

接続検出部１２は、外部接続端子１１からの電力が入力されたか否かを検出し、切替回路１３に出力する。接続検出部１２の構成の一例としては、図１に示すように、ＰＭＯＳトランジスタ１２１を備え、そのゲート及びソースには外部接続端子１１に接続され、ドレインには、一端が接地されたプルダウン抵抗Ｒの多端が接続されている。そして、ドレインからは、外部接続端子１１に接触型充電器３の電力供給端子３２が接続されていないときにはローレベル信号、されることにより電圧が変化するとハイレベル信号を出力する。   The connection detection unit 12 detects whether or not power from the external connection terminal 11 has been input, and outputs it to the switching circuit 13. As an example of the configuration of the connection detection unit 12, as shown in FIG. 1, a pull-down resistor R having a PMOS transistor 121, whose gate and source are connected to the external connection terminal 11, and whose drain is grounded at one end. Are connected at multiple ends. The drain outputs a low level signal when the power supply terminal 32 of the contact charger 3 is not connected to the external connection terminal 11, and outputs a high level signal when the voltage changes.

切替回路１３は、接続検出部１２からの選択信号に基づいて二つの端子ａ，ｂのいずれか一方を選択し、充電回路１４と接続する。端子ａは端子ＣＨに接続され、端子ｂは外部接続端子１１に接続される。そして、切替回路１３は、接続検出部１２からの出力がローレベル信号のときには端子ａを、ハイレベル信号のときには端子ｂを選択する。なお、接続検出部１２及び切替回路１３は、電源入力選択部の一例として機能する。   The switching circuit 13 selects one of the two terminals a and b based on the selection signal from the connection detection unit 12 and connects to the charging circuit 14. The terminal a is connected to the terminal CH, and the terminal b is connected to the external connection terminal 11. The switching circuit 13 selects the terminal a when the output from the connection detection unit 12 is a low level signal, and selects the terminal b when the output is a high level signal. The connection detection unit 12 and the switching circuit 13 function as an example of a power input selection unit.

充電回路１４は、切替回路１３から電力が入力され、端子＋及び端子−を介して電池パック２の電池セル２４に対する充電を制御する。例えば、電池セル２４に所定の電圧がかかるように電圧を制御し、さらに充電電流を監視して所定の電流以下になったときに充電を停止するように制御する。また、充電池への充電状態等を制御部１５に通知する。なお、充電回路１４は、非接触式及び接触式の充電器からの入力の両方を兼用することとなるので、携帯電話１ａの装置の大型化やコストアップを防ぐことができる。   The charging circuit 14 receives power from the switching circuit 13 and controls charging of the battery cell 24 of the battery pack 2 via the terminal + and the terminal −. For example, the voltage is controlled so that a predetermined voltage is applied to the battery cell 24, and the charging current is monitored, and the charging is controlled to stop when the battery cell 24 becomes a predetermined current or less. In addition, the controller 15 is notified of the state of charge of the rechargeable battery. In addition, since the charging circuit 14 serves as both inputs from the non-contact type and the contact type charger, it is possible to prevent an increase in size and cost of the mobile phone 1a.

制御部１５は、携帯電話１ａの全体の動作を制御するものであり、所定のプログラムによって動作するプロセッサを主体に構成される。制御部１５は、充電回路１４における状態を監視すると共に、充電回路１４への充電の開始・停止等を制御する。   The control unit 15 controls the overall operation of the mobile phone 1a, and is mainly composed of a processor that operates according to a predetermined program. The control unit 15 monitors the state of the charging circuit 14 and controls the start / stop of charging of the charging circuit 14.

次に、本実施形態の携帯電話１ａの動作について説明する。図４は、本発明の第１の実施形態に係る携帯電話の動作を説明するフローチャートである。   Next, the operation of the mobile phone 1a of this embodiment will be described. FIG. 4 is a flowchart for explaining the operation of the mobile phone according to the first embodiment of the present invention.

図４に示すように、接続検出部１２は、外部接続端子１１に電力が供給されたか否かを監視する（ステップＳ１０１）。そして、外部接続端子１１に電力が供給されたことが検出されると（ステップＳ１０１のＹＥＳ）、切替回路１３は、端子ｂを選択して、外部接続端子１１と充電回路１４とを接続する（ステップＳ１０２）。充電回路１４は、外部接続端子１１経由で電力供給を受ける（ステップＳ１０３）。   As shown in FIG. 4, the connection detection unit 12 monitors whether or not power is supplied to the external connection terminal 11 (step S101). When it is detected that power is supplied to the external connection terminal 11 (YES in Step S101), the switching circuit 13 selects the terminal b and connects the external connection terminal 11 and the charging circuit 14 ( Step S102). The charging circuit 14 receives power supply via the external connection terminal 11 (step S103).

制御部１５は、充電回路１４からの充電電源入力を認識して（ステップＳ１０４）、電池パック２に対する充電を開始し（ステップＳ１０５）、外部接続端子１１に供給された電力は、切替回路１３、充電回路１４、及び保護回路２３を介して電池セル２４に供給されて充電される。   The control unit 15 recognizes the charging power input from the charging circuit 14 (step S104), starts charging the battery pack 2 (step S105), and the power supplied to the external connection terminal 11 is changed to the switching circuit 13, The battery cell 24 is supplied and charged through the charging circuit 14 and the protection circuit 23.

ステップＳ１０１にて、外部接続端子１１に電力が供給されたことが検出されないと（ステップＳ１０１のＮＯ）、切替回路１３は、端子ａを選択して、端子ＣＨと充電回路１４とを接続する（ステップＳ１０７）。   If it is not detected in step S101 that power is supplied to the external connection terminal 11 (NO in step S101), the switching circuit 13 selects the terminal a and connects the terminal CH and the charging circuit 14 ( Step S107).

そして、携帯電話１ａが非接触型充電器４に設置されると（ステップＳ１０８のＹＥＳ）、充電回路１４は、コイル２１、非接触充電回路２２、及び端子ＣＨ経由で電力供給を受ける（ステップＳ１０９）。そして、ステップＳ１０４〜ステップＳ１０６と同様に充電が開始される。   When the mobile phone 1a is installed in the contactless charger 4 (YES in step S108), the charging circuit 14 receives power supply via the coil 21, the contactless charging circuit 22, and the terminal CH (step S109). ). Then, charging is started in the same manner as in steps S104 to S106.

なお、非接触型充電器４への設置の検出は、携帯電話１ａに手動のスイッチ又は設置を検出するセンサを設けて検出してもよいし、非接触型充電器４に手動のスイッチ又は設置を検出するセンサを設け、制御部４５が認証部４２２から認証開始を要求する信号を、コイル４３を介して送出することにより、認証部２２３を介して電池制御部２５にて検出してもよい。   The installation on the non-contact charger 4 may be detected by providing a manual switch or a sensor for detecting the installation on the mobile phone 1a, or a manual switch or installation on the non-contact charger 4. May be detected by the battery control unit 25 via the authentication unit 223 by sending a signal requesting the start of authentication from the authentication unit 422 via the coil 43. .

そして、非接触型充電器４へ設置されたことが検出されると、認証部２２３と認証部４２２との間で認証が行われ、非接触型充電器４にて認証の成立が確認されると、非接触型充電器４からの電力供給が開始される。なお、認証方法としては、認証部２２３から、自身の充電方式等の情報を含む識別情報を、コイル２１を介して送信し、認証部４２２にて識別情報を解析して認証の成立／不成立を判定する。   When it is detected that it is installed in the non-contact charger 4, authentication is performed between the authentication unit 223 and the authentication unit 422, and the establishment of authentication is confirmed in the non-contact charger 4. Then, power supply from the non-contact charger 4 is started. As an authentication method, identification information including information such as its own charging method is transmitted from the authentication unit 223 via the coil 21, and the authentication unit 422 analyzes the identification information to determine whether authentication is established or not established. judge.

一方、ステップＳ１０８において、携帯電話１ａが非接触型充電器４に設置されないと（ステップＳ１０８のＮＯ）、携帯電話１ａは電力の供給を受けないので、充電をしない。   On the other hand, in step S108, if the mobile phone 1a is not installed in the non-contact charger 4 (NO in step S108), the mobile phone 1a is not supplied with power and is not charged.

このような本発明の第１の実施形態によれば、接触型及び非接触型の両方の充電方式に対応可能であり、また、充電方式のうち、いずれか一方の入力のみを選択するので、一度に両方の電源入力部から電力が入力されるような場合でも、安全に充電を行うことができる。   According to the first embodiment of the present invention, it is possible to support both contact type and non-contact type charging methods, and since only one of the charging methods is selected, Even when power is input from both power input units at once, charging can be performed safely.

（第２の実施形態）
図５は本発明の第２の実施形態に係る充電システムの概要を説明するシーケンスチャートである。なお、本実施形態の充電システムは、非接触充電回路２２の認証部２２３及び電池制御部２５の動作が異なる他は、第１の実施形態で説明した構成と同様であるので、重複する部分の説明は省略する。 (Second Embodiment)
FIG. 5 is a sequence chart for explaining the outline of the charging system according to the second embodiment of the present invention. The charging system of the present embodiment is the same as the configuration described in the first embodiment except that the operations of the authentication unit 223 and the battery control unit 25 of the non-contact charging circuit 22 are different. Description is omitted.

携帯電話１ａは非接触型充電器４に設置されると、認証部２２３から、コイル２１を介して非接触型充電器４に識別情報を送信する（ステップＳ２１１）。非接触型充電器４では、認証部４２２は、コイル４３を介して受信した識別情報を解析する（ステップＳ２１２）。そして、認証が成立ない場合には（ステップＳ２１２のＮＯ）、制御部４５に認証不成立である旨を通知し、制御部４５は変換回路４２１から携帯電話１ａに対する電力供給状態をオフに設定し、充電しない（ステップＳ２１３）。   When the mobile phone 1a is installed in the contactless charger 4, the authentication unit 223 transmits identification information to the contactless charger 4 via the coil 21 (step S211). In the non-contact charger 4, the authentication unit 422 analyzes the identification information received via the coil 43 (step S212). If the authentication is not established (NO in step S212), the control unit 45 is notified that the authentication is not established, and the control unit 45 sets the power supply state from the conversion circuit 421 to the mobile phone 1a to off, The battery is not charged (step S213).

一方、認証部４２２は、認証が成立すると（ステップＳ２１２のＹＥＳ）、制御部４５に認証成立である旨を通知し、制御部４５は変換回路４２１から携帯電話１ａに対する電力供給状態をオンに設定し、充電を開始する（ステップＳ２１４）。   On the other hand, when the authentication is established (YES in step S212), the authentication unit 422 notifies the control unit 45 that the authentication is established, and the control unit 45 sets the power supply state from the conversion circuit 421 to the mobile phone 1a to on. Then, charging is started (step S214).

充電開始後も、電池パック２の認証部２２３は、所定時間毎に識別情報を送信する（ステップＳ２０２）。非接触型充電器４の認証部４２２では、送信された識別情報を解析し、認証が成立している間は電力の供給を継続する。また、電池パック２では、保護回路２３にて異常を監視し、異常が検出されない間は（ステップＳ２０３のＮＯ）、充電を継続する。   Even after the start of charging, the authentication unit 223 of the battery pack 2 transmits identification information every predetermined time (step S202). The authentication unit 422 of the non-contact charger 4 analyzes the transmitted identification information and continues to supply power while authentication is established. In the battery pack 2, the protection circuit 23 monitors the abnormality and continues charging while no abnormality is detected (NO in step S203).

そして、保護回路にて異常が検出された場合（ステップＳ２０３のＹＥＳ）、電池制御部２５は、認証部２２３から認証が不成立となる情報を非接触充電回路４２に送信し、認証部２２３における認証を不成立とする。   When an abnormality is detected in the protection circuit (YES in step S203), the battery control unit 25 transmits information indicating that authentication is not established from the authentication unit 223 to the non-contact charging circuit 42, and authentication in the authentication unit 223 is performed. Is not established.

非接触型充電器４の認証部４２２では、認証が不成立となる情報が送信されたので、識別情報を解析すると（ステップＳ２１５）、認証が不成立となる。制御部４５は、認証部４２２における認証不成立の結果に基づいて、変換回路４２１から携帯電話１ａに対する電力供給状態をオフに設定し、充電を停止する（ステップＳ２１６）。   The authentication unit 422 of the non-contact charger 4 transmits information indicating that the authentication is not established. Therefore, when the identification information is analyzed (step S215), the authentication is not established. Based on the result of the authentication failure in authentication unit 422, control unit 45 sets the power supply state from conversion circuit 421 to mobile phone 1a to off, and stops charging (step S216).

このような本発明の第２の実施形態によれば、電池パック２に異常が生じたときに、非接触型充電器４との認証を不成立とするので、非接触型充電器４において電力供給すべきでない状況を認識することが可能となり、不要な電力供給を抑制し、非接触型充電器４における消費電力を軽減することができる。   According to the second embodiment of the present invention, since the authentication with the non-contact charger 4 is not established when an abnormality occurs in the battery pack 2, power is supplied to the non-contact charger 4. It is possible to recognize a situation that should not be performed, suppress unnecessary power supply, and reduce power consumption in the non-contact charger 4.

なお、認証の方法が、非接触充電器４の認証部４２２から認証要求を行い、電池パック２の認証部２２３から認証要求に対する応答を返信することにより、認証が成立する場合には、保護回路２３にて異常検出された際に認証を不成立にする方法としては、認証部２２３にて認証応答を返信しないことにより、認証部４２２にて認証不成立の判定を行ってもよい。   When the authentication is performed by making an authentication request from the authentication unit 422 of the non-contact charger 4 and returning a response to the authentication request from the authentication unit 223 of the battery pack 2, the protection circuit As a method for making authentication unsuccessful when an abnormality is detected at 23, authentication part 422 may determine that authentication is unsuccessful by not returning an authentication response at authentication part 223.

また、第２の実施形態にて説明した電池パックが装着される携帯電話は、必ずしも接触型の充電方式に対応したものである必要はない。その場合、図１に示す外部接続端子１１、接続検出部１２、切替回路１３は不要であり、電池パックの端子ＣＨと充電回路とが直接、接続される。   In addition, the mobile phone to which the battery pack described in the second embodiment is attached is not necessarily compatible with the contact-type charging method. In that case, the external connection terminal 11, the connection detection unit 12, and the switching circuit 13 shown in FIG. 1 are unnecessary, and the terminal CH of the battery pack and the charging circuit are directly connected.

（第３の実施形態）
図６は、本発明の第３の実施形態に係る携帯電話の主要な構成を示すブロック図である。図６において、第１の実施形態で説明した図１と重複する部分については同一の符号を付す。また、電池制御部２５及び非接触充電回路２２の動作は、第２の実施形態で説明したものと同様である。 (Third embodiment)
FIG. 6 is a block diagram showing a main configuration of a mobile phone according to the third embodiment of the present invention. In FIG. 6, the same reference numerals are given to the portions overlapping those in FIG. 1 described in the first embodiment. The operations of the battery control unit 25 and the non-contact charging circuit 22 are the same as those described in the second embodiment.

図６に示すように、本実施形態の携帯電話１ｂは、異常検出回路１６を備えている。異常検出回路１６は、制御部１５からの指示に従って、充電回路１４等の携帯電話１ｂにおける異常を監視し、異常が検出された際に、端子Ｔを介して保護回路２３に対して、充電状態に異常が発生したことを認識させる制御信号を出力する。   As shown in FIG. 6, the mobile phone 1 b of this embodiment includes an abnormality detection circuit 16. The abnormality detection circuit 16 monitors an abnormality in the mobile phone 1b such as the charging circuit 14 according to an instruction from the control unit 15, and when an abnormality is detected, the abnormality detection circuit 16 charges the protection circuit 23 via the terminal T with a charge state. A control signal for recognizing that an abnormality has occurred is output.

保護回路２３は、端子Ｔを介して異常検出回路１６からの制御信号が入力されると、異常を検出した状態となるので、第２の実施形態にて説明した図５のステップＳ２０３のＹＥＳ及びステップＳ２０４と同様に、非接触型充電器４との間の認証を不成立とすることで、非接触型充電器４による電力の供給を停止することができる。   Since the protection circuit 23 is in a state of detecting an abnormality when a control signal from the abnormality detection circuit 16 is input via the terminal T, YES in step S203 in FIG. 5 described in the second embodiment and Similarly to step S <b> 204, the supply of power by the non-contact charger 4 can be stopped by disabling the authentication with the non-contact charger 4.

このような本発明の第３の実施形態によれば、携帯電話１ｂ側に異常が生じた場合にも、保護回路２３において異常検出した状態と同様に認証を不成立にすることにより、非接触型充電器４において電力供給すべきでない状況を認識することが可能となり、不要な電力供給を抑制し、非接触型充電器４における消費電力を軽減することができる。   According to the third embodiment of the present invention as described above, even when an abnormality occurs on the mobile phone 1b side, authentication is not established in the same manner as in the state in which the abnormality is detected in the protection circuit 23, so that the non-contact type It is possible to recognize a situation where power should not be supplied in the charger 4, suppress unnecessary power supply, and reduce power consumption in the contactless charger 4.

本発明の電池パック、電子機器及び非接触充電システムは、接触型及び非接触型の両方の充電方式に対応可能な効果を有し、携帯電話等に有用である。   The battery pack, electronic device, and non-contact charging system of the present invention have an effect that can be applied to both contact type and non-contact type charging methods, and are useful for mobile phones and the like.

本発明の第１の実施形態に係る充電システムの概要を説明するブロック図The block diagram explaining the outline | summary of the charging system which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る非接触充型電器の非接触充電回路の主要な構成を示すブロック図The block diagram which shows the main structures of the non-contact charging circuit of the non-contact charging type electric appliance which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る携帯電話の非接触充電回路の主要な構成を示すブロック図The block diagram which shows the main structures of the non-contact charging circuit of the mobile telephone which concerns on the 1st Embodiment of this invention 本発明の第１の実施形態に係る携帯電話の動作を説明するフローチャートThe flowchart explaining operation | movement of the mobile telephone based on the 1st Embodiment of this invention. 本発明の第２の実施形態に係る充電システムの概要を説明するシーケンスチャートThe sequence chart explaining the outline | summary of the charging system which concerns on the 2nd Embodiment of this invention 本発明の第３の実施形態に係る携帯電話の主要な構成を示すブロック図The block diagram which shows the main structures of the mobile telephone based on the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１ａ，１ｂ 携帯電話
２ 電池パック
３ 接触型充電器
４ 非接触型充電器
１１ 外部接続端子
１２ 接続検出部
１３ 切替回路
１４ 充電回路
１５ 制御部
１６ 異常検出回路
２１ コイル
２２ 非接触充電回路
２３ 保護回路
２４ 電池セル
２５ 電池制御部
３１ ＡＣアダプタ
３２ 電力供給端子
４１ ＡＣアダプタ
４２ 非接触充電回路
４３ コイル
４４ 温度検出部
４５ 制御部
５１，５２ 交流電源 DESCRIPTION OF SYMBOLS 1a, 1b Cellular phone 2 Battery pack 3 Contact type charger 4 Non-contact type charger 11 External connection terminal 12 Connection detection part 13 Switching circuit 14 Charging circuit 15 Control part 16 Abnormality detection circuit 21 Coil 22 Non-contact charge circuit 23 Protection circuit 24 battery cell 25 battery control unit 31 AC adapter 32 power supply terminal 41 AC adapter 42 non-contact charging circuit 43 coil 44 temperature detection unit 45 control unit 51, 52 AC power supply

Claims (8)

二次電池を電源として用いる電子機器であって、
非接触型の充電器から供給される電力が入力される第一の電源入力部と、
接触型の充電器から供給される電力が入力される第二の電源入力部と、
前記第一の電源入力部から供給される電力及び前記第二の電源入力部から供給される電力のいずれか一方を選択して、前記二次電池に供給する電源入力選択部と
を備える電子機器。 An electronic device using a secondary battery as a power source,
A first power input unit to which power supplied from a contactless charger is input;
A second power input unit to which power supplied from the contact charger is input;
An electronic apparatus comprising: a power input selection unit that selects one of the power supplied from the first power input unit and the power supplied from the second power input unit and supplies the selected power to the secondary battery . 請求項１に記載の電子機器であって、
前記電源入力選択部は、前記第二の電源入力部からの電力の入力が検出されたとき、前記第二の電源入力部を選択する電子機器。 The electronic device according to claim 1,
The power supply input selection unit is an electronic device that selects the second power supply input unit when power input from the second power supply input unit is detected. 請求項１又は２に記載の電子機器であって、
前記二次電池は、前記二次電池に電力を供給する電力供給端子を有する電池パックに収容され、
前記電源入力選択部から出力された、前記第一の電源入力部又は前記第二の電源入力部からの電力を、前記電池パックの電力供給端子へ出力し、前記二次電池に対する充電を制御する充電回路を更に備える
電子機器。 The electronic device according to claim 1 or 2,
The secondary battery is housed in a battery pack having a power supply terminal for supplying power to the secondary battery,
The power from the first power input unit or the second power input unit output from the power input selection unit is output to the power supply terminal of the battery pack, and charging to the secondary battery is controlled. An electronic device further comprising a charging circuit. 非接触型の充電器から供給される電力を充電可能な二次電池を有する電池パックであって、
前記二次電池に対する充電状態を監視する保護回路と、
前記充電器との間で通信を行い、前記充電器からの電力供給を許可する認証を行う認証部と、
前記保護回路により充電状態に異常が検出された場合に、前記認証部における前記認証を不成立とする電池制御部と
を備える電池パック。 A battery pack having a secondary battery capable of charging power supplied from a non-contact charger,
A protection circuit for monitoring a charge state of the secondary battery;
An authentication unit that performs communication with the charger and performs authentication for permitting power supply from the charger;
A battery pack comprising: a battery control unit configured to reject the authentication in the authentication unit when an abnormality is detected in the state of charge by the protection circuit. 請求項４に記載の電池パックであって、
前記非接触型の充電器との間で電磁結合して電力の供給を受けるコイルを更に有し、
前記認証部は、認証情報を、前記コイルを介して前記充電器に送信する電池パック。 The battery pack according to claim 4,
A coil that is electromagnetically coupled to the non-contact charger to receive power;
The authentication unit is a battery pack that transmits authentication information to the charger via the coil. 請求項４又は５に記載の電池パックを装着可能な電子機器。   An electronic device to which the battery pack according to claim 4 or 5 can be attached. 請求項６に記載の電子機器であって、
前記電子機器の異常を監視し、前記異常が検出された際に、前記保護回路に対して、前記充電状態に異常が発生したことを認識させる制御信号を出力する異常検出回路を更に備える電子機器。 The electronic device according to claim 6,
An electronic device further comprising an abnormality detection circuit that monitors an abnormality of the electronic device and outputs a control signal for recognizing that an abnormality has occurred in the charging state to the protection circuit when the abnormality is detected . 請求項１，２，３，６又は７に記載の電子機器と、
電磁エネルギーにより、前記電子機器に対して電力を供給する充電器と
を備える非接触充電システム。 Electronic equipment according to claim 1, 2, 3, 6 or 7,
A contactless charging system comprising: a charger that supplies electric power to the electronic device by electromagnetic energy.
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