CN101546918A - Device and method for charging USB - Google Patents

Device and method for charging USB Download PDF

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Publication number
CN101546918A
CN101546918A CN200810300695A CN200810300695A CN101546918A CN 101546918 A CN101546918 A CN 101546918A CN 200810300695 A CN200810300695 A CN 200810300695A CN 200810300695 A CN200810300695 A CN 200810300695A CN 101546918 A CN101546918 A CN 101546918A
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CN
China
Prior art keywords
charging
voltage
battery
electronic equipment
charge mode
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Granted
Application number
CN200810300695A
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Chinese (zh)
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CN101546918B (en
Inventor
陈建亨
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CN200810300695XA priority Critical patent/CN101546918B/en
Publication of CN101546918A publication Critical patent/CN101546918A/en
Application granted granted Critical
Publication of CN101546918B publication Critical patent/CN101546918B/en
Expired - Fee Related legal-status Critical Current
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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

Abstract

The invention relates to a USB charging device comprising a charging circuit chip, a battery interface unit which is connected with the charging circuit chip, a voltage detector which is connected to the battery interface unit and a control chip which is connected with the voltage detector and the charging circuit chip, wherein the charging circuit chip is internally provided with charging circuits of different charging modes for selecting different charging circuits according to different charging commands so as to switch the charging modes; a positive pole end of the battery interface unit is connected with the charging circuit chip, and a negative pole end is grounded; the voltage detector is used for detecting the battery voltage in the battery interface unit and feedbacking the battery voltage information to the control chip; the control chip is used for sending a corresponding charging command according to the battery voltage information of the voltage detector so as to switch different charging modes and simultaneously sending out power-on and power-off commands to electronic equipment by matching with corresponding charging modes.

Description

USB charging device and charging method
Technical field
The present invention relates to a kind of charging device and charging method, relate in particular to a kind of charging device and charging method of utilizing the USB interface charging.
Background technology
Now, (Universal Serial BUS: USB) interface has been widely used in the various electronic equipments such as mobile phone, digital camera USB, use for convenient, these electronic equipments generally all can design with USB interface and be its charging by computer, and be furnished with special-purposely to charger that should interface, these electronic equipments can be connected directly on the computer by USB interface and charge by computer.According to the usb protocol standard, USB interface can provide 100 milliamperes to 500 milliamperes electric current for its charging, general electronic equipment is when charging, when electronic equipment does not carry out communication with host computer, computer only provides the highest 100 milliamperes electric current to charge to electronic equipment, like this, the speed of charging wants slow a lot.
Now a lot of electronic equipments connects computer and charges under the state of start, at this moment, electronic equipment can carry out communication by usb protocol and host computer, and the charging current that obtains maximum 500 milliamperes promptly adopts fast charge mode to accelerate charging rate.But electronic equipment charges under open state, and itself also will consume certain battery electric quantity, and the situation that causes its charging to be not fully filled not only influences battery life, also makes the flying power deficiency of battery, influences the service time of electronic equipment.
Summary of the invention
In view of this, be necessary to provide a kind of and can improve the USB charging device that charge efficiency can guarantee that again electric weight is full of.
Also be necessary to provide a kind of charging method of utilizing this USB charging device to charge.
A kind of USB charging device, it comprises a charging circuit chip, the one battery interface unit that is connected with described charging circuit chip, one is connected in the detecting voltage device and a control chip of described battery interface unit, and this control chip is connected with described detecting voltage device and described charging circuit chip.
Be provided with the charging circuit of the different charge modes of tool in the described charging circuit chip, be used for selecting different charging circuits, to switch charge mode according to different charging instruction.
Described battery interface unit positive terminal connects charging circuit chip, negative pole end ground connection.
Described detecting voltage device is used to detect the cell voltage in the battery interface unit, and battery voltage information is fed back to described control chip.
Described control chip is used for sending corresponding charging instruction according to the battery voltage information of described detecting voltage device, to switch different charge modes, cooperates corresponding charge mode electronic apparatus system to be sent the instruction of open and close machine simultaneously.
A kind of USB charging method of using above-mentioned USB charging device, it may further comprise the steps:
Detect the cell voltage in the described battery interface unit, and battery voltage information is fed back to described control chip;
Judge whether cell voltage is higher than the start voltage of electronic equipment, if, then electronic equipment start, if not, then electronic equipment maintenance off-mode charges with normal charge mode and reaches the start voltage of electronic equipment until cell voltage;
After the electronic equipment start, described electronic equipment is by USB interface and host computer communication, and the selection fast charge mode is a battery charge;
Judge whether cell voltage reaches the maximum charging voltage of battery, if, then electronic equipment shutdown, if otherwise continue fast charge mode;
After the electronic equipment shutdown, switching charge mode is the constant voltage charge pattern, is full of complete charge until battery electric quantity.
Compare prior art, USB charging device of the present invention can be controlled the switching on and shutting down of electronic equipment, by with the communication of host computer, switch different charge modes, not only guarantee charge efficiency but also can guarantee that battery electric quantity is full of, helped improving the life-span and the flying power of rechargeable battery.
Description of drawings
Fig. 1 is a USB charging device schematic diagram of the present invention;
Fig. 2 is the flow chart of USB charging method of the present invention.
Embodiment
See also Fig. 1, be depicted as the schematic diagram of USB charging device of the present invention, described USB charging device comprises a charging circuit chip 10, the one battery interface unit 20 that is connected with described charging circuit chip 10, one is connected in the detecting voltage device 30 and a control chip 40 of battery interface unit 20, and described control chip 40 is connected with described detecting voltage device 30 and described charging circuit chip 10.
Be provided with the charging circuit of the different charge modes of tool in the described charging circuit chip 10, it can select different charging circuits according to different charging instruction;
In the present embodiment, described charge mode comprises normal charge mode, fast charge mode and constant voltage charge pattern.Described normal charge mode and fast charge mode are constant current charge, and wherein the charging current of normal charge mode is 100 milliamperes, and the charging current of fast charge mode is 500 milliamperes; Described constant voltage charge pattern is used for continuing battery is charged after cell voltage reaches maximum charging voltage, its charging current reduce along with the raising of battery capacity until battery electric quantity be full of, complete charge.
Certainly, the charging current of described fast charge mode also can be different because of requiring according to specific design, and are not limited in the present embodiment 500 milliamperes.
Described fast charge mode needs in the electronic equipment start, and with the host computer communication after carry out.
Described battery interface unit 20 positive terminals connect charging circuit chip 10, and negative pole end ground connection during charging, extremely places the positive and negative of the corresponding respectively described battery interface of rechargeable battery positive and negative electrode unit 20 in the described battery interface unit 20.
Described detecting voltage device 30 is used to detect the cell voltage in the battery interface unit 20, and battery voltage information is fed back to described control chip 40;
Described control chip 40 is used for sending corresponding charging instruction according to the battery voltage information of described detecting voltage device 30, to switch different charge modes, cooperate corresponding charge mode electronic apparatus system to be sent the instruction of open and close machine simultaneously, wherein, normal charge mode and constant voltage charge pattern are carried out when electronic equipment shuts down, and fast charge mode carries out when electronic equipment is started shooting.
During charging, earlier described charging circuit chip 10 is connected by USB interface and host computer.
See also Fig. 2, be depicted as the flow chart of USB charging method of the present invention, it comprises the steps:
S501 detects the cell voltage in the described battery interface unit 20, and battery voltage information is fed back to described control chip 40;
S502 judges whether cell voltage is higher than the start voltage of electronic equipment, if, then electronic equipment start, if not, then electronic equipment maintenance off-mode charges with normal charge mode and reaches the start voltage of electronic equipment until cell voltage;
S503, after the electronic equipment start, described electronic equipment is by USB interface and host computer communication, and the selection fast charge mode is a battery charge;
S504 judges whether cell voltage reaches the maximum charging voltage of battery, if, then electronic equipment shutdown, if otherwise continue fast charge mode;
S505, after the electronic equipment shutdown, switching charge mode is the constant voltage charge pattern, is full of until battery electric quantity;
S506, complete charge.
Described USB charging device and charging method are applicable to that digital camera, Digital Video, mobile phone, PDA, MP3, MP4 etc. have in the electronic equipment of USB interface.
With respect to prior art, USB charging device of the present invention can be controlled the switching on and shutting down of electronic installation, by with host computer Communication, switch different charge modes, not only guaranteed charge efficiency but also can guarantee that battery electric quantity is full of, be conducive to improve charging The life-span of battery and flying power.
In addition, those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from technology effect of the present invention Really, all should be included in the present invention's range required for protection.

Claims (6)

  1. [claim 1] a kind of USB charging device, it comprises a charging circuit chip, the one battery interface unit that is connected with described charging circuit chip, one is connected in the detecting voltage device and a control chip of battery interface unit, and this control chip is connected with described detecting voltage device and described charging circuit chip;
    Be provided with the charging circuit of the different charge modes of many group tools in the described charging circuit chip, be used for selecting different charging circuits, to switch charge mode according to different charging instruction;
    Described battery interface unit positive terminal connects charging circuit chip, negative pole end ground connection;
    Described detecting voltage device is used to detect the cell voltage in the battery interface unit, and battery voltage information is fed back to described control chip;
    Described control chip is used for sending corresponding charging instruction according to the battery voltage information that described detecting voltage device detects, and to switch different charge modes, cooperates corresponding charge mode electronic apparatus system to be sent the instruction of open and close machine simultaneously.
  2. [claim 2] USB charging device as claimed in claim 1 is characterized in that: described charge mode comprises normal charge mode, fast charge mode and constant voltage charge pattern.
  3. [claim 3] USB charging device as claimed in claim 2, the charging current of described normal charge mode is 100 milliamperes, the charging current of described fast charge mode is up to 500 milliamperes greater than 100 milliamperes.
  4. [claim 4] USB charging device as claimed in claim 2, described constant voltage charge pattern is that charging voltage is constant, charging current reduces along with the increase of battery electric quantity.
  5. [claim 5] USB charging device as claimed in claim 2, described normal charge mode and constant voltage charge pattern are all carried out under the electronic equipment off-mode, and described fast charge mode carries out under the electronic equipment open state.
  6. [claim 6] a kind of USB charging method is characterized in that comprising the steps:
    Detect the cell voltage in the described battery interface unit, and battery voltage information is fed back to control chip;
    Control chip judges whether cell voltage is higher than the start voltage of electronic equipment, if, then send the start of start-up command control electronic equipment, if not, then electronic equipment maintenance off-mode charges with normal charge mode and reaches the start voltage of electronic equipment until cell voltage;
    After the electronic equipment start, described electronic equipment is by USB interface and host computer communication, and the selection fast charge mode is a battery charge;
    Judge whether cell voltage reaches the maximum charging voltage of battery, if, then send the shutdown of shutdown command control electronic equipment, if otherwise continue fast charge mode;
    After the electronic equipment shutdown, switching charge mode is the constant voltage charge pattern, is full of until battery electric quantity;
    Complete charge.
CN200810300695XA 2008-03-25 2008-03-25 Device and method for charging USB Expired - Fee Related CN101546918B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810300695XA CN101546918B (en) 2008-03-25 2008-03-25 Device and method for charging USB

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810300695XA CN101546918B (en) 2008-03-25 2008-03-25 Device and method for charging USB

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CN101546918A true CN101546918A (en) 2009-09-30
CN101546918B CN101546918B (en) 2012-05-30

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102156524A (en) * 2011-02-11 2011-08-17 威盛电子股份有限公司 Adaptive universal serial bus charging method and system
CN102279623A (en) * 2010-06-12 2011-12-14 技嘉科技股份有限公司 Mainboard with handheld rapid-charging type multimedia device
CN102799554A (en) * 2012-07-23 2012-11-28 天津三星电子有限公司 Data transmission method, apparatus thereof and display terminal applied thereto
CN102856933A (en) * 2011-06-27 2013-01-02 鸿富锦精密工业（深圳）有限公司 Universal serial bus (USB) charging circuit
CN102957193A (en) * 2012-11-19 2013-03-06 中兴通讯股份有限公司 Charge management method, device and system
CN103066340A (en) * 2012-12-17 2013-04-24 中兴通讯股份有限公司 Charging method, mobile terminal and adapter
CN103246335A (en) * 2012-02-13 2013-08-14 联想(北京)有限公司 State control method and electronic equipment
WO2013127071A1 (en) * 2012-02-29 2013-09-06 华硕科技（苏州）有限公司 Computer device and method for converting working mode of universal serial bus connector of the computer device
CN103490109A (en) * 2012-06-12 2014-01-01 中兴通讯股份有限公司 Terminal charging method and device
CN104391186A (en) * 2014-07-02 2015-03-04 广东易事特电源股份有限公司 UPS charging board fault detection machine and UPS charging board fault detection method and device
US9356397B2 (en) 2012-01-19 2016-05-31 Asustek Computer Inc. Connector and electronic system using the same
CN102279623B (en) * 2010-06-12 2016-12-14 技嘉科技股份有限公司 For having the motherboard of the hand-held multimedia device filling function soon
CN106451637A (en) * 2016-11-03 2017-02-22 惠州Tcl移动通信有限公司 Charge indicating lamp control method and system and mobile terminal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2606979Y (en) * 2002-10-29 2004-03-17 联想(北京)有限公司 Novel portable equipment intelligent charger
GB2402271B (en) * 2003-05-27 2006-04-19 Research In Motion Ltd Method and apparatus for handling a charging state in a mobile electronic device

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279623A (en) * 2010-06-12 2011-12-14 技嘉科技股份有限公司 Mainboard with handheld rapid-charging type multimedia device
CN102279623B (en) * 2010-06-12 2016-12-14 技嘉科技股份有限公司 For having the motherboard of the hand-held multimedia device filling function soon
US8892912B2 (en) 2011-02-11 2014-11-18 Via Technologies, Inc. Adaptive USB charging method and system
CN102156524A (en) * 2011-02-11 2011-08-17 威盛电子股份有限公司 Adaptive universal serial bus charging method and system
CN102156524B (en) * 2011-02-11 2015-01-07 威盛电子股份有限公司 adaptive universal serial bus charging method and system
CN102856933A (en) * 2011-06-27 2013-01-02 鸿富锦精密工业（深圳）有限公司 Universal serial bus (USB) charging circuit
US9356397B2 (en) 2012-01-19 2016-05-31 Asustek Computer Inc. Connector and electronic system using the same
CN103246335B (en) * 2012-02-13 2016-01-27 联想(北京)有限公司 Condition control method and electronic equipment
CN103246335A (en) * 2012-02-13 2013-08-14 联想(北京)有限公司 State control method and electronic equipment
WO2013127071A1 (en) * 2012-02-29 2013-09-06 华硕科技（苏州）有限公司 Computer device and method for converting working mode of universal serial bus connector of the computer device
US9557791B2 (en) 2012-02-29 2017-01-31 Asus Technology (Suzhou) Co., Ltd. Computer device and method for converting working mode of universal serial bus connector of the computer device
JP2015513739A (en) * 2012-02-29 2015-05-14 ▲華▼▲碩▼科技（▲蘇▼州）有限公司 Computer device and method for switching work mode of universal serial bus connector
CN103490109B (en) * 2012-06-12 2016-12-14 南京中兴新软件有限责任公司 The charging method of a kind of terminal and device
CN103490109A (en) * 2012-06-12 2014-01-01 中兴通讯股份有限公司 Terminal charging method and device
CN102799554A (en) * 2012-07-23 2012-11-28 天津三星电子有限公司 Data transmission method, apparatus thereof and display terminal applied thereto
CN102957193B (en) * 2012-11-19 2015-12-23 中兴通讯股份有限公司 A kind of charging management method, device and system
CN102957193A (en) * 2012-11-19 2013-03-06 中兴通讯股份有限公司 Charge management method, device and system
CN103066340A (en) * 2012-12-17 2013-04-24 中兴通讯股份有限公司 Charging method, mobile terminal and adapter
CN103066340B (en) * 2012-12-17 2015-08-12 中兴通讯股份有限公司 charging method, mobile terminal and adapter
CN104391186A (en) * 2014-07-02 2015-03-04 广东易事特电源股份有限公司 UPS charging board fault detection machine and UPS charging board fault detection method and device
CN106451637A (en) * 2016-11-03 2017-02-22 惠州Tcl移动通信有限公司 Charge indicating lamp control method and system and mobile terminal

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