JP2006115656A - Power supply control method of electronic apparatus - Google Patents

Power supply control method of electronic apparatus Download PDF

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JP2006115656A
JP2006115656A JP2004302808A JP2004302808A JP2006115656A JP 2006115656 A JP2006115656 A JP 2006115656A JP 2004302808 A JP2004302808 A JP 2004302808A JP 2004302808 A JP2004302808 A JP 2004302808A JP 2006115656 A JP2006115656 A JP 2006115656A
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power supply
external power
power source
secondary battery
electronic device
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Osamu Koyama
理 湖山
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Canon Inc
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Canon Inc
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<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of operating the electronic apparatus by other external power supplies and exchanging the external power supplies during charging while monitoring charge current, even under such a condition that secondary cells are charged by the external power supplies in the electronic apparatus which can be driven by the integrated secondary cells and the plurality of external power supplies. <P>SOLUTION: In this electronic apparatus which can be driven by the integrated secondary cells and the plurality of external power supplies; the electronic apparatus is constituted of a first connection which can be connected with the first external power supply having constant current restriction or constant energy restriction with constant voltage; a second connection which can be connected with the second external power supply of which the restriction is larger except the first external power supply; and a power supply switching control circuit which recognizes that the charge control circuit for controlling the charge voltage and the charge current at the time of charging the secondary cells with the first external power supply or the second external power supply is connected with the respective power supply voltages, and controls by switching a power supply source for driving the electronic apparatus and a power supply source for charging the secondary cells from the secondary battery, the first external power supply, and the second external power supply. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内蔵の二次電池と複数の外部電源からの駆動が可能な電子機器の電源制御方法に関するものである。   The present invention relates to a power control method for an electronic device that can be driven from a built-in secondary battery and a plurality of external power sources.

従来、複数の電源から電子機器を駆動させる際の切替制御方法として、例えば特許文献１にあるように、内蔵の二次電池と外部電源の各電源供給手段からの受電切替と、各外部電源から内蔵の二次電池への充電切替があった。
特開２００１−３３９８５０号公報 Conventionally, as a switching control method when driving an electronic device from a plurality of power sources, for example, as disclosed in Patent Document 1, switching of power reception from each power supply means of a built-in secondary battery and an external power source, and from each external power source There was a charge switch to the built-in secondary battery.
JP 2001-339850 A

従来の撮像装置は、各外部電源から内蔵の二次電池への充電中に、他の外部電源で電子機器を駆動させる事ができなかった。例えば、ＡＣ電源で内蔵の二次電池を充電している際に、ＵＳＢのＶＢＵＳから電源を供給し、ホストＰＣと通信する事はできない。また、各外部電源から内蔵の二次電池への充電中に、充電電流を監視し、充電途中で電子機器が充電供給元を切り替える制御方法がなかった。例えばＵＳＢは電源電圧が５Ｖで、５００ｍＡの電流制限があり、内蔵の二次電池を充電する場合、ＡＣ電源で充電する場合と比べて充電時間が長くなる可能性がある。また、電子機器に電力供給する場合も、電力不足により動作を制限しなければいけない可能性がある。上述した２点を改善する事が本発明の課題である。   In the conventional imaging device, the electronic device cannot be driven by another external power source while charging the built-in secondary battery from each external power source. For example, when charging a built-in secondary battery with an AC power supply, power cannot be supplied from a USB VBUS to communicate with a host PC. In addition, there has been no control method for monitoring the charging current during charging from each external power source to the built-in secondary battery, and for the electronic device to switch the charging supply source during charging. For example, USB has a power supply voltage of 5 V and a current limit of 500 mA. When charging a built-in secondary battery, the charging time may be longer than when charging with an AC power supply. Also, when power is supplied to an electronic device, there is a possibility that the operation must be restricted due to power shortage. It is an object of the present invention to improve the above two points.

本願の請求項１に記載した発明では、第一の外部電源が内蔵の二次電池を充電している状態において、第二の外部電源が電子機器を駆動させる事が可能な電子機器の電源制御方法を提供する事を第一の目的とする。   In the invention described in claim 1 of the present application, in the state where the first external power source is charging the built-in secondary battery, the second external power source can control the power source of the electronic device. The primary purpose is to provide a method.

本願の請求項２に記載した発明では、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源が電子機器に電力を供給し、第一の外部電源以外で、制限がより大きい第二の外部電源が内蔵の二次電池を充電する状態において、充電電流値が前記第一の外部電源から供給可能な電流閾値を下回った場合に、前記電子機器への電力供給を第二の外部電源に、前記二次電池への充電電力供給を前記第一の外部電源に、それぞれ切り替えて制御する事が可能な電子機器の電源制御方法を提供する事を第二の目的とする。   In the invention described in claim 2 of the present application, the first external power source with constant voltage and constant current limitation or constant power limitation supplies power to the electronic device, and the limitation is larger except for the first external power source. In a state where the second external power source charges the built-in secondary battery, when the charging current value falls below the current threshold that can be supplied from the first external power source, the power supply to the electronic device is It is a second object of the present invention to provide a power supply control method for an electronic device capable of switching and controlling charging power supply to the secondary battery to the first external power supply.

内蔵の二次電池と複数の外部電源からの駆動が可能な電子機器において、該電子機器は、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源を接続可能な第一の接続部と、
第一の外部電源以外で、制限がより大きい第二の外部電源を接続可能な第二の接続部と、
前記第一、或いは第二の外部電源から前記二次電池を充電する場合の充電電圧、及び充電電流を制御するための充電制御回路と、
各電源電圧が接続されている事を認識し、前記電子機器を駆動させる場合の電源供給元と、前記二次電池を充電する場合の電源供給元を、前記二次電池、前記第一の外部電源、前記第二の外部電源から切り替えて制御する電源切替制御回路から構成され、
前記第一の外部電源から前記電子機器に電源を供給している状態において、
前記第二の外部電源から前記二次電池を充電する事が可能な電子機器の電源制御方法。 In an electronic device that can be driven from a built-in secondary battery and a plurality of external power sources, the electronic device can connect a first external power source that can be connected to a first external power source that is constant voltage limited or constant power limited with a constant voltage. A connection,
Other than the first external power supply, a second connection part capable of connecting a second external power supply having a larger limit;
A charge control circuit for controlling a charge voltage and a charge current when charging the secondary battery from the first or second external power source; and
Recognizing that each power supply voltage is connected, the power supply source when driving the electronic device, and the power supply source when charging the secondary battery are the secondary battery, the first external A power source, and a power source switching control circuit that controls switching from the second external power source,
In a state where power is supplied from the first external power source to the electronic device,
An electronic device power control method capable of charging the secondary battery from the second external power source.

内蔵の二次電池と複数の外部電源からの駆動が可能な電子機器において、該電子機器は、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源を接続可能な第一の接続部と、
第一の外部電源以外で、制限がより大きい第二の外部電源を接続可能な第二の接続部と、
前記第一、或いは第二の外部電源から前記二次電池を充電する場合の充電電圧、及び充電電流を制御するための充電制御回路と、
各電源電圧が接続されている事を認識し、前記電子機器を駆動させる場合の電源供給元と、前記二次電池を充電する場合の電源供給元を、前記二次電池、前記第一の外部電源、前記第二の外部電源から切り替えて制御する電源切替制御回路から構成され、
前記第一の外部電源から前記電子機器に電源を供給し、前記第二の外部電源から前記二次電池を充電している状態で、
充電電流値が前記第一の外部電源から供給可能な電流閾値を下回った場合に、
前記電子機器への電力供給を第二の外部電源に、前記二次電池への充電電力供給を前記第一の外部電源に、それぞれ切り替えて制御する事が可能な電子機器の電源制御方法。 In an electronic device that can be driven from a built-in secondary battery and a plurality of external power sources, the electronic device can connect a first external power source that can be connected to a first external power source that is constant voltage limited or constant power limited with a constant voltage. A connection,
Other than the first external power supply, a second connection part capable of connecting a second external power supply having a larger limit;
A charge control circuit for controlling a charge voltage and a charge current when charging the secondary battery from the first or second external power source; and
Recognizing that each power supply voltage is connected, the power supply source when driving the electronic device, and the power supply source when charging the secondary battery are the secondary battery, the first external A power source, and a power source switching control circuit that controls switching from the second external power source,
In the state where power is supplied to the electronic device from the first external power source and the secondary battery is charged from the second external power source,
When the charging current value falls below the current threshold that can be supplied from the first external power supply,
A power control method for an electronic device capable of switching and controlling power supply to the electronic device to a second external power source and charging power supply to the secondary battery to the first external power source.

本願の請求項１に記載した発明では、第一の外部電源が内蔵の二次電池を充電している状態において、第二の外部電源が電子機器を駆動させる事が可能な電子機器を提供する事ができる。   The invention described in claim 1 of the present application provides an electronic device in which the second external power source can drive the electronic device while the first external power source is charging the built-in secondary battery. I can do things.

本願の請求項２に記載した発明では、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源が電子機器に電力を供給し、第一の外部電源以外で、制限がより大きい第二の外部電源が内蔵の二次電池を充電する状態において、充電電流値が前記第一の外部電源から供給可能な電流閾値を下回った場合に、前記電子機器への電力供給を第二の外部電源に、前記二次電池への充電電力供給を前記第一の外部電源に、それぞれ切り替えて制御する事が可能な電子機器を提供する事ができる。   In the invention described in claim 2 of the present application, the first external power source with constant voltage and constant current limitation or constant power limitation supplies power to the electronic device, and the limitation is larger except for the first external power source. In a state where the second external power source charges the built-in secondary battery, when the charging current value falls below the current threshold that can be supplied from the first external power source, the power supply to the electronic device is It is possible to provide an electronic device capable of switching and controlling the charging power supply to the secondary battery to the first external power source.

以下、本発明の実施の形態について図を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の特徴を最もよく表す図面であり、同図にあるように、電子機器内に格納できる二次電池１００と、第一の外部電源を接続可能な接続部１０１と、第二の外部電源を接続可能な接続部１０２と、前記第一、或いは第二の外部電源から前記二次電池を充電する場合の充電電圧、及び電流を制御するための充電制御回路１０３と、電子機器を駆動させる場合の電源供給元と、前記二次電池を充電する場合の電源供給元を、前記二次電池、前記第一の外部電源、前記第二の外部電源から切り替えて制御する、電源切替制御回路１０４と、電子機器の動作ブロック１０５から構成される電子機器に関するものである。   FIG. 1 is a drawing that best represents the characteristics of the present invention. As shown in FIG. 1, a secondary battery 100 that can be stored in an electronic device, a connection portion 101 that can be connected to a first external power source, A connection unit 102 capable of connecting two external power supplies, a charge control circuit 103 for controlling a charging voltage and current when charging the secondary battery from the first or second external power supply, and an electronic A power source for controlling the power source for driving the device and the power source for charging the secondary battery by switching from the secondary battery, the first external power source, and the second external power source. The present invention relates to an electronic device including a switching control circuit 104 and an operation block 105 of the electronic device.

本発明の一実施形態としてデジタルカメラを用いて説明する。   An embodiment of the present invention will be described using a digital camera.

図２は、デジタルカメラ２００とパーソナルコンピュータ２０１をＵＳＢインターフェースを用いて接続し、ＡＣ電源２０２と前記デジタルカメラ２００を接続した場合の図面である。   FIG. 2 is a diagram when the digital camera 200 and the personal computer 201 are connected using a USB interface, and the AC power source 202 and the digital camera 200 are connected.

図３は、前記デジタルカメラ２００の構成図であり、前記デジタルカメラ２００に内蔵する二次電池３００と、第一の外部電源であるＵＳＢ電源３０１と、第二の外部電源であるＡＣ電源３０２と、前記二次電池３００と前記ＵＳＢ電源３０１と前記ＡＣ電源３０２の各電源を監視し、切り替えて制御するための電源切替制御回路３０３と、前記二次電池３００を充電する場合の充電電圧、及び電流を制御、及び監視するための充電制御回路３０４と、シャッタースイッチやメニュー選択に用いるボタンなどからなる操作系ブロック３０５と、画像処理を行ったりＵＳＢドライバや前記デジタルカメラ２００全体を制御する制御ブロック３０６と、画像などのデータを記録できるメモリーカード３０７と、ストロボ関係のブロック３０８と、ズームやフォーカスなどのメカブロック３０９と、撮像素子などの撮像ブロック３１０と、画像を表示するＬＣＤブロック３１１から構成されている。   FIG. 3 is a block diagram of the digital camera 200. The secondary battery 300 built in the digital camera 200, a USB power source 301 as a first external power source, and an AC power source 302 as a second external power source. A power supply switching control circuit 303 for monitoring, switching, and controlling each of the secondary battery 300, the USB power supply 301, and the AC power supply 302, a charging voltage for charging the secondary battery 300, and A charge control circuit 304 for controlling and monitoring current, an operation system block 305 including buttons used for shutter switches and menu selection, and a control block for performing image processing and controlling the USB driver and the digital camera 200 as a whole. 306, a memory card 307 capable of recording data such as images, a strobe block 308, A mechanism block 309, such as over arm and focus the imaging block 310, such as the imaging device, and a LCD block 311 for displaying an image.

例えば、前記ＵＳＢ電源３０１のように、定電流制限、或いは定電力制限のある前記第一の外部電源は、上述した、前記操作系ブロック３０５と、前記制御ブロック３０６と、前記メモリーカード３０７といった消費電力が少ないブロックのみに電力供給が可能であり、上述した、前記ストロボ関係のブロック３０８と、前期メカブロック３０９と、前記撮像ブロック３１０と、前記ＬＣＤブロック３１１といった消費電力の多いブロックには電力が供給できない。また、前記ＵＳＢ電源３０１が前記二次電池３００を充電する場合、電流制限により、前記ＡＣ電源３０２の急速充電電流値まで電力供給できないため、前記ＡＣ電源３０２から充電する場合と比較して充電時間が長くなる。   For example, like the USB power supply 301, the first external power supply having a constant current limit or a constant power limit is the consumption of the operation block 305, the control block 306, and the memory card 307 described above. It is possible to supply power only to blocks with low power, and the blocks with high power consumption, such as the strobe-related block 308, the previous mechanical block 309, the imaging block 310, and the LCD block 311 described above, have power. Cannot supply. In addition, when the USB power supply 301 charges the secondary battery 300, the power supply cannot be performed up to the rapid charging current value of the AC power supply 302 due to current limitation. Becomes longer.

本発明の電子機器は、該電子機器に前記二次電池３００と、第一の外部電源である前記ＵＳＢ電源３０１と、第二の外部電源である前記ＡＣ電源３０２が接続され、かつ、前記ＡＣ電源３０２から前記電子機器の動作ブロックに電力供給を行っている状態において、前記二次電池３００と前記ＵＳＢ電源３０１が接続されている事を前記電源切替制御回路３０３にて認識し、前記ＵＳＢ電源３０１から前記二次電池３００を充電する事ができる。この場合、前記充電制御回路３０４にて、充電電流を監視しながら前記ＵＳＢ電源３０１の許容電力範囲内での充電制御を行う。   In the electronic device of the present invention, the secondary battery 300, the USB power source 301 as a first external power source, and the AC power source 302 as a second external power source are connected to the electronic device, and the AC device In a state where power is supplied from the power supply 302 to the operation block of the electronic device, the power supply switching control circuit 303 recognizes that the secondary battery 300 and the USB power supply 301 are connected, and the USB power supply The secondary battery 300 can be charged from 301. In this case, the charging control circuit 304 performs charging control within the allowable power range of the USB power supply 301 while monitoring the charging current.

本発明の電子機器は、該電子機器に前記二次電池３００と、第一の外部電源である前記ＵＳＢ電源３０１と、第二の外部電源である前記ＡＣ電源３０２が接続され、かつ、前記ＵＳＢ電源３０１から前記電子機器の動作ブロックに電力供給を行っている状態において、前記二次電池３００と前記ＡＣ電源３０２が接続されている事を前記電源切替制御回路３０３にて認識し、前記ＡＣ電源３０２から前記二次電池３００を充電する事ができる。この場合、前記充電制御回路３０４にて、充電電流を監視しながら前記ＡＣ電源３０２の許容電力範囲内での充電制御を行う。充電電流値が前記ＵＳＢ電源３０１で供給可能な電流閾値を下回ると、電子機器の動作ブロックへの電力供給を前記ＡＣ電源３０２で行い、前記二次電池３００への充電のための電力供給を前記ＵＳＢ電源３０１で行うよう、前記電源切替制御回路３０３にて切り替えることができる。   The electronic device of the present invention is connected to the secondary battery 300, the USB power source 301 as a first external power source, and the AC power source 302 as a second external power source. In a state where power is supplied from the power supply 301 to the operation block of the electronic device, the power supply switching control circuit 303 recognizes that the secondary battery 300 and the AC power supply 302 are connected, and the AC power supply The secondary battery 300 can be charged from 302. In this case, the charging control circuit 304 performs charging control within the allowable power range of the AC power supply 302 while monitoring the charging current. When the charging current value falls below a current threshold that can be supplied by the USB power supply 301, the AC power supply 302 supplies power to the operation block of the electronic device, and the power supply for charging the secondary battery 300 is performed. The power supply switching control circuit 303 can perform switching as with the USB power supply 301.

本発明の電源制御方法を備えた電子機器のブロック図である。It is a block diagram of the electronic device provided with the power supply control method of this invention. 本発明に係るデジタルカメラを、パーソナルコンピュータとＵＳＢとＡＣ電源を使用して接続する場合の図面である。1 is a diagram of a case where a digital camera according to the present invention is connected to a personal computer using a USB and an AC power source. 本発明に係る実施の形態を説明するための、デジタルカメラの構成図である。It is a block diagram of a digital camera for describing an embodiment according to the present invention. 本発明に係る実施の形態の、デジタルカメラの動作を説明するためのフローチャート図（１）Flowchart diagram for explaining the operation of the digital camera according to the embodiment of the present invention (1) 本発明に係る実施の形態の、デジタルカメラの動作を説明するためのフローチャート図（２）FIG. 2 is a flowchart (2) for explaining the operation of the digital camera according to the embodiment of the present invention.

符号の説明Explanation of symbols

１００ 二次電池
１０１ 第一の外部電源の接続部
１０２ 第二の外部電源の接続部
１０３ 充電制御回路
１０４ 電源切替制御回路
１０５ 動作ブロック
２００ デジタルカメラ
２０１ パーソナルコンピュータ
２０２ ＡＣ電源
３００ 二次電池
３０１ ＵＳＢ電源
３０２ ＡＣ電源
３０３ 電源切替制御回路
３０４ 充電制御回路
３０５ 操作系ブロック
３０６ 制御ブロック
３０７ メモリーカード
３０８ ストロボブロック
３０９ メカブロック
３１０ 撮像ブロック
３１１ ＬＣＤブロック 100 Secondary Battery 101 First External Power Supply Connection Unit 102 Second External Power Supply Connection Unit 103 Charging Control Circuit 104 Power Supply Switching Control Circuit 105 Operation Block 200 Digital Camera 201 Personal Computer 202 AC Power Supply 300 Secondary Battery 301 USB Power Supply 302 AC power supply 303 Power supply switching control circuit 304 Charging control circuit 305 Operation system block 306 Control block 307 Memory card 308 Strobe block 309 Mechanical block 310 Imaging block 311 LCD block

Claims (2)

内蔵の二次電池と複数の外部電源からの駆動が可能な電子機器において、該電子機器は、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源を接続可能な第一の接続部と、
第一の外部電源以外で、制限がより大きい第二の外部電源を接続可能な第二の接続部と、
前記第一、或いは第二の外部電源から前記二次電池を充電する場合の充電電圧、及び充電電流を制御するための充電制御回路と、
各電源電圧が接続されている事を認識し、前記電子機器を駆動させる場合の電源供給元と、前記二次電池を充電する場合の電源供給元を、前記二次電池、前記第一の外部電源、前記第二の外部電源から切り替えて制御する電源切替制御回路から構成され、
前記第一の外部電源から前記電子機器に電源を供給している状態において、
前記第二の外部電源から前記二次電池を充電する事が可能である事を特徴とする電子機器の電源制御方法。 In an electronic device that can be driven from a built-in secondary battery and a plurality of external power sources, the electronic device can connect a first external power source that can be connected to a first external power source that is constant voltage limited or constant power limited with a constant voltage. A connection,
Other than the first external power supply, a second connection part capable of connecting a second external power supply having a larger limit;
A charge control circuit for controlling a charge voltage and a charge current when charging the secondary battery from the first or second external power source; and
Recognizing that each power supply voltage is connected, the power supply source when driving the electronic device, and the power supply source when charging the secondary battery are the secondary battery, the first external A power source, and a power source switching control circuit that controls switching from the second external power source,
In a state where power is supplied from the first external power source to the electronic device,
A method for controlling the power supply of an electronic device, wherein the secondary battery can be charged from the second external power supply. 内蔵の二次電池と複数の外部電源からの駆動が可能な電子機器において、該電子機器は、電圧一定で定電流制限、或いは定電力制限のある第一の外部電源を接続可能な第一の接続部と、
第一の外部電源以外で、制限がより大きい第二の外部電源を接続可能な第二の接続部と、
前記第一、或いは第二の外部電源から前記二次電池を充電する場合の充電電圧、及び充電電流を制御するための充電制御回路と、
各電源電圧が接続されている事を認識し、前記電子機器を駆動させる場合の電源供給元と、前記二次電池を充電する場合の電源供給元を、前記二次電池、前記第一の外部電源、前記第二の外部電源から切り替えて制御する電源切替制御回路から構成され、
前記第一の外部電源から前記電子機器に電源を供給し、前記第二の外部電源から前記二次電池を充電している状態で、
充電電流値が前記第一の外部電源から供給可能な電流閾値を下回った場合に、
前記電子機器への電力供給を第二の外部電源に、前記二次電池への充電電力供給を前記第一の外部電源に、それぞれ切り替えて制御する事が可能である事を特徴とする電子機器の電源制御方法。 In an electronic device that can be driven from a built-in secondary battery and a plurality of external power sources, the electronic device can connect a first external power source that can be connected to a first external power source that is constant voltage limited or constant power limited with a constant voltage. A connection,
Other than the first external power supply, a second connection part capable of connecting a second external power supply having a larger limit;
A charge control circuit for controlling a charge voltage and a charge current when charging the secondary battery from the first or second external power source; and
Recognizing that each power supply voltage is connected, the power supply source when driving the electronic device, and the power supply source when charging the secondary battery are the secondary battery, the first external A power source, and a power source switching control circuit that controls switching from the second external power source,
In the state where power is supplied to the electronic device from the first external power source and the secondary battery is charged from the second external power source,
When the charging current value falls below the current threshold that can be supplied from the first external power supply,
Electronic device capable of switching and controlling power supply to the electronic device to a second external power source and charging power supply to the secondary battery to the first external power source, respectively Power control method.
JP2004302808A 2004-10-18 2004-10-18 Power supply control method of electronic apparatus Withdrawn JP2006115656A (en)

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Cited By (6)

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JP2014003896A (en) * 2013-08-20 2014-01-09 Fujitsu Ltd Charging system and processing unit
US9030166B2 (en) 2009-07-03 2015-05-12 Nikon Corporation Electronic device, and method controlling electronic power supply
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Cited By (9)

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Publication number Priority date Publication date Assignee Title
US9030166B2 (en) 2009-07-03 2015-05-12 Nikon Corporation Electronic device, and method controlling electronic power supply
US10128672B2 (en) 2009-07-03 2018-11-13 Nikon Corporation Electronic device, and method controlling electronic power supply
JP2014003896A (en) * 2013-08-20 2014-01-09 Fujitsu Ltd Charging system and processing unit
CN104614064A (en) * 2015-02-13 2015-05-13 福州大学 High speed multi-dimensional vibration measuring device and method based on stripe target
JP2016194841A (en) * 2015-04-01 2016-11-17 リズム時計工業株式会社 Usb fan device with charge function
KR20170025484A (en) * 2015-08-28 2017-03-08 삼성전자주식회사 Method for charging battery and electronic device implementing the same
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