WO2012077270A1 - 電子機器 - Google Patents

電子機器 Download PDF

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Publication number
WO2012077270A1
WO2012077270A1 PCT/JP2011/005897 JP2011005897W WO2012077270A1 WO 2012077270 A1 WO2012077270 A1 WO 2012077270A1 JP 2011005897 W JP2011005897 W JP 2011005897W WO 2012077270 A1 WO2012077270 A1 WO 2012077270A1
Authority
WO
WIPO (PCT)
Prior art keywords
usb
control unit
battery
unit
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/005897
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
智樹 勝又
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to US13/643,461 priority Critical patent/US20130049680A1/en
Priority to JP2012507496A priority patent/JP5005845B2/ja
Publication of WO2012077270A1 publication Critical patent/WO2012077270A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/685—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using connection detecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • 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

Definitions

  • the present invention relates to a technology related to USB charging control, and relates to an electronic device having a battery deterioration prevention function that avoids unintended charging by a user by providing a charging start determination when charging via USB is started.
  • USB Universal Serial Bus
  • USB is a serial interface standard developed by a plurality of companies and used for public computer systems.
  • the USB cable conforming to the USB standard has a power line of +5 V, a GND line, and two signal lines of D + / D ⁇ .
  • the USB cable conforming to the USB standard enables power supply of +5 V, 500 mA at the same time as transmitting a signal.
  • a method of charging using this power source is called USB charging.
  • USB-connector has become standardized because the standardization of the Micro-USB connector has made it possible to reduce the size and thickness of the USB connector and mount it on portable devices. It is predicted that it will come.
  • Patent Document 1 The technology of Patent Document 1 is one such example.
  • the technology of this Patent Document 1 simply connects the output voltage of VBUS to the power line of the mobile phone.
  • VBUS is supplied to the charging circuit even when the USB connection is made only for the purpose of communication.
  • charging unintended by the user is started, resulting in an increase in the number of unnecessary charging times and a problem of promoting cycle deterioration.
  • Patent Document 2 is an example of charging control by supplying power from a USB interface using a general-purpose USB communication cable.
  • An electronic device disclosed in Patent Document 2 includes a data communication unit that transmits and receives signals via a USB interface, a battery charge control circuit that charges a battery, and a distribution circuit that distributes VBUS power for data communication and charging And a microcomputer for centrally controlling these circuits.
  • the distribution circuit supplies the VBUS power source to the data communication unit when the data communication unit is operating, and supplies the VBUS power source to the battery charging control circuit when the data communication unit is not operating. Switching between communication and charging.
  • the electronic device disclosed in Patent Document 2 controls the supply of power to the charging control circuit only by the presence or absence of communication, distribution control of the distribution circuit frequently occurs, that is, charging starts / stops frequently. Will be repeated. Therefore, in the electronic device disclosed in Patent Document 2, it is not possible to stop the promotion of charge cycle deterioration.
  • Patent Document 3 discloses a charge start control technology that extends the life of a secondary battery by reducing the number of times of charging.
  • the technology disclosed in Patent Document 3 includes a voltage detection unit that detects a voltage of a secondary battery, and a charging device when the voltage of the secondary battery detected by the voltage detection unit falls below a predetermined charging start voltage. Is provided with a switch means for controlling so that the voltage is not supplied from the charging device to the secondary battery when the voltage of the secondary battery is higher than the charging start voltage.
  • Patent Document 3 since the technology disclosed in Patent Document 3 has a fixed charging start threshold value, it is desired to charge the battery for a long time, such as a scene where the time interval until the next charging is expected to be long, and to extend the usable time. Even in this case, if the battery voltage is equal to or higher than the threshold, a phenomenon that charging is not started occurs, which is very inconvenient. That is, if the threshold value is set high, the number of times of charging increases, and if the threshold value is set low, the convenience deteriorates, so that the threshold value cannot be uniquely determined in the first place.
  • An object of the present invention is to provide an electronic device that solves the above-described problems, prevents cycle deterioration of a battery, and is provided with highly convenient charge control.
  • a main body a USB connection unit provided in the main body, a VBUS detection unit that determines that a USB device is connected to the USB connection unit, A USB control unit for detecting whether or not a D + / D ⁇ terminal of the USB connection unit is short-circuited and determining whether or not the connected USB device is a dedicated USB charging device; a battery housed in the main body; A battery monitoring unit that monitors the state of the battery, a charge control unit that charges the battery, and a system that controls the supply of power from the USB device connected to the USB connection unit to the charge control unit An electronic device including a control unit is provided. According to the above configuration, it is provided with means for determining whether or not the connected USB device is a dedicated charging device from the state of the D + / D ⁇ terminal of the USB connection unit when it is detected that the USB device is connected. It is a feature.
  • the electronic device determines that the USB dedicated charger is connected as a result of the USB connected device determination, the electronic device performs a charging start determination based on a charging start threshold, and the USB dedicated charger When it is determined that a device other than the device is connected, the charging start determination based on the charging start threshold is not performed.
  • an electronic device main body a USB connection unit provided in the electronic device main body, a VBUS detection unit that determines that a USB device is connected to the USB connection unit, and the USB connection
  • a USB control unit for detecting the presence or absence of a short circuit of the D + / D ⁇ terminals of the unit, a battery housed in the electronic device body, a battery monitoring unit for monitoring the state of the battery, and charging the battery A charge control unit; a switch that controls supply of power from a USB device connected to the USB connection unit to the charge control unit; and a system control unit that controls the switch and the charge control unit.
  • the electronic device When the VBUS detection unit detects the connection of the USB device and the USB control unit determines that the D + / D ⁇ terminals of the USB connection unit are not short-circuited, the electronic device. Control unit, wherein, when the battery voltage obtained from the battery monitoring unit is below a preset threshold, an electronic apparatus, characterized in that starting charging to the battery.
  • the VBUS detection unit detects the connection of the USB device, and the USB control unit short-circuits the D + / D ⁇ terminals of the USB connection unit. Is detected, charging of the battery is started.
  • the VBUS detection unit detects connection of a USB device, and the USB control unit does not short-circuit the D + / D ⁇ terminals of the USB connection unit.
  • the battery voltage obtained from the battery monitoring unit is equal to or higher than a preset threshold value, power supply to the charge control unit is not performed.
  • the battery life can be extended by suppressing the acceleration of battery cycle deterioration while ensuring convenience.
  • Embodiment 1 is a configuration block diagram of an electronic device 1 according to Embodiment 1 of the present invention.
  • Configuration block diagram of electronic device 2 according to Embodiment 2 of the present invention The flowchart which shows operation
  • FIG. 1 is a configuration block diagram of an electronic device 1 according to Embodiment 1 of the present invention.
  • electronic device 1 according to the first exemplary embodiment of the present invention determines USB connection unit 100 provided in the electronic device main body and that the USB device is connected to USB connection unit 100.
  • the VBUS detection unit 101, the USB control unit 102 that observes the state of the D + / D ⁇ terminals of the USB connection unit 100 and determines whether the connected USB device is a dedicated charging device, and the electronic device main body.
  • Switch (SW) 106 which is a switch means for switching whether or not to supply the charging control unit 105, the USB control unit 102, and the battery monitoring unit 104.
  • SW switch means for switching whether or not to supply the charging control unit 105, the USB control unit 102, and the battery monitoring unit 104.
  • SW switch means for switching whether or not to supply the charging control unit 105, the USB control unit 102, and the battery monitoring unit 104.
  • SW switch
  • (SW) 106 and the system control unit 107 for controlling the charging control unit 105, and a.
  • FIG. 2 is a flowchart showing the operation of the electronic device 1 according to the first embodiment of the present invention.
  • the electronic device 1 detects that the USB device is connected by the VBUS detection unit 101 (step S 200), and sends the USB to the system control unit 107. It is notified that the device is connected (step S201).
  • the system control unit 107 turns off the switch (SW) 106 (step S202).
  • SW switch
  • the system control unit 107 notifies the USB control unit 102 that the D + / D ⁇ terminal state observation is performed, and the USB control unit 102 indicates the result of the D + / D ⁇ terminal state observation. 107 is notified (step S203). As a result of observing the state of the D + / D ⁇ terminal by the USB control unit 102, if it is determined that the D + / D ⁇ terminal is short-circuited, the system control unit 107 determines that the connected USB device is a dedicated USB charging device. (“Yes” in step S203). Then, the system control unit 107 turns on the switch (SW) 106 (step S205), supplies power to the charging control unit 105, and immediately starts charging the secondary battery 103 (step S206).
  • SW switch
  • the system control unit 107 uses a general-purpose USB communication cable or the like. It is determined that a device other than the dedicated charger is connected (“No” in step S203). Next, the system control unit 107 obtains battery voltage information from the battery monitoring unit 104 and compares it with a preset charging start threshold (step S204). When the battery voltage is equal to or lower than the charge start threshold (“Yes” in step S204), the system control unit 107 turns on the switch (SW) 106 (step S205), supplies power to the charge control unit 105, and starts charging. (Step S206). When the battery voltage is equal to or higher than the charging start threshold (“No” in step S204), the system control unit 107 turns off the switch (SW) 106 until the battery voltage becomes equal to or lower than the charging start threshold, and does not start charging.
  • the battery start determination is performed based on the charge start threshold only when a device other than the USB charge dedicated device is connected, thereby ensuring the convenience of charging and the battery. Acceleration of cycle deterioration can be suppressed and battery life can be extended.
  • the description has been made so that the determination is made from the result of the single threshold determination in consideration of the processing time.
  • the present invention is not limited thereto, and the result of the threshold determination performed a plurality of times. You may judge from.
  • the system control unit 107 compares the battery voltage included in the battery voltage information obtained from the battery monitoring unit 104 with a preset charging start threshold of the battery voltage. Is going.
  • the value of the battery voltage obtained from the battery monitoring unit 104 is an example of battery voltage information. Therefore, in the electronic device 2 according to Embodiment 2, another example of battery voltage information will be described.
  • FIG. 3 is a configuration block diagram of the electronic device 2 according to Embodiment 2 of the present invention.
  • the same number is used for the same configuration as the first embodiment.
  • the electronic device 2 determines the USB connection unit 100 provided in the electronic device main body and that the USB device is connected to the USB connection unit 100.
  • the VBUS detection unit 101, the USB control unit 102 that observes the state of the D + / D ⁇ terminals of the USB connection unit 100 and determines whether the connected USB device is a dedicated charging device, and the electronic device main body.
  • a secondary battery 103 a battery monitoring unit 204 that monitors the state of the secondary battery 103, a charge control unit 105 that charges the secondary battery 103, and a USB device connected to the USB connection unit 100
  • the switch (SW) 106 which is a switch means for switching whether to supply power to the charging control unit 105, and from the USB control unit 102 and the battery monitoring unit 204.
  • a system control unit 207 for controlling the switch (SW) 106 and a charging control unit 105, and a.
  • the electronic device 2 according to the second embodiment is different from the electronic device 1 according to the first embodiment in that the battery remaining amount included in the battery voltage information obtained by the system control unit 207 from the battery monitoring unit 204. And a preset charge remaining threshold value for the remaining battery level.
  • FIG. 4 is a flowchart showing the operation of the electronic device 2 according to the second embodiment of the present invention.
  • the electronic device 2 detects that the USB device is connected by the VBUS detection unit 101 (step S300), and sends the USB to the system control unit 207. It is notified that the device is connected (step S301).
  • the system control unit 207 turns off the switch (SW) 106 (step S302).
  • SW switch
  • the system control unit 207 notifies the USB control unit 102 that the D + / D ⁇ terminal state observation is performed, and the USB control unit 102 indicates the result of the D + / D ⁇ terminal state observation. Notification to 207 (step S303).
  • the system control unit 207 determines that the connected USB device is a dedicated USB charging device. (“Yes” in step S303). Then, the system control unit 207 turns on the switch (SW) 106 (step S305), supplies power to the charging control unit 105, and immediately starts charging the secondary battery 103 (step S306).
  • SW switch
  • the system control unit 207 uses a general-purpose USB communication cable or the like. It is determined that a device other than the dedicated charger is connected (“No” in step S303). Next, the system control unit 207 obtains battery voltage information from the battery monitoring unit 204 and compares it with a preset charging start threshold (step S304). If the remaining battery level is equal to or lower than the charging start threshold, the system control unit 207 turns on the switch (SW) 106 (step S305), supplies power to the charging control unit 105, and starts charging (step S306). If the remaining battery level is equal to or higher than the charging start threshold (“No” in step S304), the system control unit 207 turns off the switch (SW) 106 until the remaining battery level becomes equal to or lower than the threshold, and does not start charging.
  • SW switch
  • the battery start determination is performed based on the charge start threshold only when a device other than the USB charge dedicated device is connected, thereby ensuring the convenience of charging and the battery. Acceleration of cycle deterioration can be suppressed and battery life can be extended.
  • the description has been made so that the determination is made from the result of the single threshold determination in consideration of the processing time.
  • the present invention is not limited to this, and the result of the threshold determination performed a plurality of times. You can judge.
  • the electric device having the function of performing the charge start control according to the detection result of the connected USB device according to the present invention suppresses the promotion of battery cycle deterioration and extends the battery life while ensuring the convenience of charging. There is an effect that can be.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
PCT/JP2011/005897 2010-12-07 2011-10-20 電子機器 Ceased WO2012077270A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/643,461 US20130049680A1 (en) 2010-12-07 2011-10-20 Electronic device
JP2012507496A JP5005845B2 (ja) 2010-12-07 2011-10-20 電子機器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010272194 2010-12-07
JP2010-272194 2010-12-07

Publications (1)

Publication Number Publication Date
WO2012077270A1 true WO2012077270A1 (ja) 2012-06-14

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PCT/JP2011/005897 Ceased WO2012077270A1 (ja) 2010-12-07 2011-10-20 電子機器

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US (1) US20130049680A1 (https=)
JP (3) JP5005845B2 (https=)
WO (1) WO2012077270A1 (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI501086B (zh) * 2013-02-07 2015-09-21 蘋果公司 對主機電子裝置充電之方法、配件裝置及非暫時性電腦可讀記錄媒體
JP2016077065A (ja) * 2014-10-03 2016-05-12 ティアック株式会社 携帯電子機器
CN107546808A (zh) * 2017-09-27 2018-01-05 努比亚技术有限公司 一种充电识别电路、识别方法及终端设备
CN107658915A (zh) * 2016-07-26 2018-02-02 大唐终端技术有限公司 一种移动终端充电方法及充电管理系统
CN110417085A (zh) * 2019-07-24 2019-11-05 深圳英集芯科技有限公司 一种用于检测苹果设备是否插入的系统及方法

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JP6288913B2 (ja) * 2012-12-28 2018-03-07 キヤノン株式会社 電子機器及びプログラム
JP6514866B2 (ja) * 2014-08-29 2019-05-15 株式会社マキタ 充電式電気機器
WO2017122555A1 (ja) * 2016-01-15 2017-07-20 ソニー株式会社 送信機、送信方法、受信機、及び、受信方法
CN107370196B (zh) * 2016-05-12 2021-12-03 阿尔派株式会社 充电装置及充电方法
US11374412B2 (en) 2017-04-14 2022-06-28 Parker House Mfg. Co., Inc. Furniture power management system
KR102358562B1 (ko) 2017-09-12 2022-02-04 삼성전자주식회사 Usb 인터페이스에서 누설 전류 발생 조건의 검출을 위한 장치 및 방법
US11689041B2 (en) * 2020-04-14 2023-06-27 Siliconch Systems Pvt Ltd System and method for detecting electrical connection and disconnection on USB Type-A charging port
EP4446897B1 (en) 2022-02-08 2026-02-18 Samsung Electronics Co., Ltd Electronic device, and method for controlling discharge of external electronic device by means of same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI501086B (zh) * 2013-02-07 2015-09-21 蘋果公司 對主機電子裝置充電之方法、配件裝置及非暫時性電腦可讀記錄媒體
JP2016077065A (ja) * 2014-10-03 2016-05-12 ティアック株式会社 携帯電子機器
US10033209B2 (en) 2014-10-03 2018-07-24 Teac Corporation Portable electronic equipment
CN107658915A (zh) * 2016-07-26 2018-02-02 大唐终端技术有限公司 一种移动终端充电方法及充电管理系统
CN107546808A (zh) * 2017-09-27 2018-01-05 努比亚技术有限公司 一种充电识别电路、识别方法及终端设备
CN107546808B (zh) * 2017-09-27 2020-11-10 努比亚技术有限公司 一种充电识别电路、识别方法及终端设备
CN110417085A (zh) * 2019-07-24 2019-11-05 深圳英集芯科技有限公司 一种用于检测苹果设备是否插入的系统及方法

Also Published As

Publication number Publication date
JP2015092820A (ja) 2015-05-14
JP2012182987A (ja) 2012-09-20
JP5669320B2 (ja) 2015-02-12
US20130049680A1 (en) 2013-02-28
JPWO2012077270A1 (ja) 2014-05-19
JP5005845B2 (ja) 2012-08-22

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