CN101546918B - Usb charging device and charging method - Google Patents
Usb charging device and charging method Download PDFInfo
- Publication number
- CN101546918B CN101546918B CN200810300695XA CN200810300695A CN101546918B CN 101546918 B CN101546918 B CN 101546918B CN 200810300695X A CN200810300695X A CN 200810300695XA CN 200810300695 A CN200810300695 A CN 200810300695A CN 101546918 B CN101546918 B CN 101546918B
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- charging
- electronic equipment
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- rechargeable battery
- battery
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A USB charging device is arranged in an electronic device and used for charging a rechargeable battery of the electronic device. The USB charging device comprises a charging circuit chip, a battery interface unit, a voltage detector and a control chip which are electrically connected with each other. The charging circuit chip is internally provided with a charging circuit with different charging modes and used for selecting the charging circuit according to the charging instruction so as to switch the charging mode. The positive end of the battery interface unit is connected with the charging circuit chip, and the negative end of the battery interface unit is grounded. And the positive electrode and the negative electrode of the rechargeable battery are respectively arranged in the battery interface unit corresponding to the positive electrode end and the negative electrode end of the battery interface unit. The voltage detector detects the battery voltage in the battery interface unit and feeds battery voltage information back to the control chip. The control chip sends out a corresponding charging instruction according to the battery voltage information of the voltage detector so as to switch the charging mode, and simultaneously sends out an instruction of turning on or off the electronic equipment by matching with the corresponding charging mode.
Description
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 and use USB interface to be its charging through computer, and be furnished with special use to charger that should interface, these electronic equipments can be connected directly on the computer through USB interface and charge through computer.According to the usb protocol standard; USB interface can provide 100 milliamperes to 500 milliamperes electric current to supply its charging; General electronic equipment is when charging, and when electronic equipment did not carry out communication with host computer, computer only provided 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 through 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, makes that also the flying power of battery is not enough, 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 is arranged in the electronic equipment, is used for the rechargeable battery of said electronic equipment is charged.Said USB charging device comprises a charging circuit chip; The one battery interface unit that is connected with said charging circuit chip; One is connected in the detecting voltage device and a control chip of said battery interface unit, and this control chip is connected with said detecting voltage device and said charging circuit chip.
Be provided with many group charging circuits in the said charging circuit chip, the charge mode of said many group charging circuits is different, and said charging circuit chip is used for selecting different charging circuits according to different charging instruction, to switch charge mode.
Said battery interface unit positive terminal connects charging circuit chip, negative pole end ground connection.The positive and negative of the corresponding respectively said battery interface of the positive and negative electrode of said rechargeable battery unit extremely places in the said battery interface unit.
Said detecting voltage device is used to detect the cell voltage in the battery interface unit, and battery voltage information is fed back to said control chip.
Said control chip is used for when said electronic equipment shuts down; With normal charge mode said rechargeable battery is charged, reach the start voltage of said electronic equipment, send start-up command and control said electronic equipment start until the voltage of said rechargeable battery; Be said rechargeable battery charging with fast charge mode then; Reach the maximum charging voltage of said rechargeable battery until the voltage of said rechargeable battery, send shutdown command and control said electronic equipment shutdown, said rechargeable battery is charged with the constant voltage charge pattern; Electric weight until said rechargeable battery is full of, complete charge.
A kind of USB charging method of using above-mentioned USB charging device, it may further comprise the steps:
Detect the voltage of said rechargeable battery;
Judge whether the voltage of said rechargeable battery is higher than the start voltage of said electronic equipment; If; Then send start-up command and control said electronic equipment start; If not, then electronic equipment keeps off-mode, and with normal charge mode said rechargeable battery being charged reaches the start voltage of said electronic equipment until the voltage of said rechargeable battery; After the said electronic equipment start, said electronic equipment is through USB interface and a host computer communication, and selecting fast charge mode is said rechargeable battery charging;
Judge whether the voltage of said rechargeable battery reaches the maximum charging voltage of said rechargeable battery, if, then said electronic equipment shutdown, if otherwise continue fast charge mode;
After the shutdown of said electronic equipment, switching charge mode, is said electronic equipment charging with the constant voltage charge pattern, is full of complete charge until the electric weight of said rechargeable battery.
Compare prior art; USB charging device of the present invention can be controlled the switching on and shutting down of electronic equipment, through 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 sketch map 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 sketch map of USB charging device of the present invention, said USB charging device is arranged in the electronic equipment, is used for the rechargeable battery in the said electronic equipment is charged.Said USB charging device comprises a charging circuit chip 10; The one battery interface unit 20 that is connected with said charging circuit chip 10; One is connected in the detecting voltage device 30 and a control chip 40 of battery interface unit 20, and said control chip 40 is connected with said detecting voltage device 30 and said charging circuit chip 10.
Be provided with the charging circuit of the different charge modes of tool in the said charging circuit chip 10, it can select different charging circuits according to different charging instruction.
In this execution mode, described charge mode comprises normal charge mode, fast charge mode and constant voltage charge pattern.Said 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; Said constant voltage charge pattern is used for reaching the maximum charging voltage continued battery being charged when cell 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 said fast charge mode also can be different because of the concrete designing requirement of certificate, and are not limited to 500 milliamperes in this execution mode.
Said fast charge mode needs in said electronic equipment start, and with a host computer communication after carry out.
Said 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 said battery interface of positive and negative electrode unit 20 of said rechargeable battery in the said battery interface unit 20.
Said detecting voltage device 30 is used to detect the voltage of the rechargeable battery in the battery interface unit 20, and the information of voltage of said rechargeable battery is fed back to said control chip 40;
The information of voltage of the said rechargeable battery that said control chip 40 is used for being detected according to said detecting voltage device 30 sends corresponding charging instruction; To switch different charge modes; Cooperate corresponding charge mode said electronic equipment to be sent the instruction of open and close machine simultaneously; Wherein, normal charge mode and constant voltage charge pattern are carried out when said electronic equipment shuts down, and fast charge mode carries out when said electronic equipment is started shooting.
During charging, earlier said charging circuit chip 10 is connected through USB interface and a host computer.
See also Fig. 2, be depicted as the flow chart of the USB charging method of using above-mentioned USB charging device, it comprises the steps:
S501 detects the charged battery voltage in the said battery interface unit 20;
S502; Judge whether the voltage of said rechargeable battery is higher than the start voltage of said electronic equipment, if, then said electronic equipment start; If not; Then said electronic equipment keeps off-mode, with normal charge mode said rechargeable battery is charged, and reaches the start voltage of said electronic equipment until the voltage of said rechargeable battery;
S503, after the said electronic equipment start, said electronic equipment is through USB interface and a host computer communication, and selecting fast charge mode is said rechargeable battery charging;
S504 judges whether the voltage of said rechargeable battery reaches the maximum charging voltage of said rechargeable battery, if, then send shutdown command and control said electronic equipment shutdown, if otherwise continue with fast charge mode said electronic equipment to be charged;
S505 after the shutdown of said electronic equipment, switches charge mode, is said rechargeable battery charging with the constant voltage charge pattern, is full of until the electric weight of said rechargeable battery;
S506, complete charge.
Described USB charging device and charging method are applicable to that digital camera, DV, 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 equipment, through with the communication of host computer, switch different charge modes; Not only guarantee charge efficiency but also can guarantee that the electric weight of rechargeable battery is full of, helped improving the life-span and the flying power of rechargeable battery.
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 technique effect of the present invention, all should be included within the present invention's scope required for protection.
Claims (5)
1. USB charging device; Be arranged in the electronic equipment; Be used for the rechargeable battery in the said electronic equipment is charged, said USB charging device comprises a charging circuit chip, the battery interface unit that is connected with said 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 said detecting voltage device and said charging circuit chip;
Be provided with many group charging circuits in the said charging circuit chip, the charge mode of said many group charging circuits is different, and said charging circuit chip is used for selecting different charging circuits according to different charging instruction, to switch charge mode;
Said battery interface unit positive terminal connects charging circuit chip, negative pole end ground connection; The positive and negative of the corresponding respectively said battery interface of the positive and negative electrode of said rechargeable battery unit extremely places in the said battery interface unit;
Said detecting voltage device is used to detect the cell voltage in the battery interface unit, and battery voltage information is fed back to said control chip;
Said control chip is used for when said electronic equipment shuts down; With normal charge mode said rechargeable battery is charged, reach the start voltage of said electronic equipment, send start-up command and control said electronic equipment start until the voltage of said rechargeable battery; Be said rechargeable battery charging with fast charge mode then; Reach the maximum charging voltage of said rechargeable battery until the voltage of said rechargeable battery, send shutdown command and control said electronic equipment shutdown, said rechargeable battery is charged with the constant voltage charge pattern; Electric weight until said rechargeable battery is full of, complete charge.
2. USB charging device as claimed in claim 1, the charging current of said normal charge mode are 100 milliamperes, and the charging current of said fast charge mode is up to 500 milliamperes greater than 100 milliamperes.
3. USB charging device as claimed in claim 1, said constant voltage charge pattern is that charging voltage is constant, charging current reduces along with the increase of battery electric quantity.
4. USB charging device as claimed in claim 1, said normal charge mode and constant voltage charge pattern are all carried out under the electronic equipment off-mode, and said fast charge mode carries out under the electronic equipment open state.
5. a USB charging method is used for the rechargeable battery in the electronic equipment is charged, and it is characterized in that comprising the steps:
Detect the voltage of said rechargeable battery;
Judge whether cell voltage is higher than the start voltage of said electronic equipment; If; Then send start-up command and control said electronic equipment start; If deny, then said electronic equipment maintenance off-mode charges with normal charge mode and reaches the start voltage of said electronic equipment until the voltage of said rechargeable battery;
After the said electronic equipment start, said electronic equipment is through USB interface and a host computer communication, and selecting fast charge mode is said rechargeable battery charging;
Judge whether said charged battery voltage reaches the maximum charging voltage of said rechargeable battery, if, then send shutdown command and control said electronic equipment shutdown, if otherwise continue with fast charge mode said electronic equipment to be charged;
After the shutdown of said electronic equipment, switch charge mode, said electronic equipment is charged, be full of until the electric weight of said rechargeable battery with the constant voltage charge pattern;
Complete charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810300695XA CN101546918B (en) | 2008-03-25 | 2008-03-25 | Usb charging device and charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810300695XA CN101546918B (en) | 2008-03-25 | 2008-03-25 | Usb charging device and charging method |
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| Publication Number | Publication Date |
|---|---|
| CN101546918A CN101546918A (en) | 2009-09-30 |
| CN101546918B true CN101546918B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810300695XA Expired - Fee Related CN101546918B (en) | 2008-03-25 | 2008-03-25 | Usb charging device and charging method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375616A (en) * | 2011-02-11 | 2015-02-25 | 威盛电子股份有限公司 | adaptive universal serial bus charging method and system |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2015504230A (en) | 2012-01-19 | 2015-02-05 | ▲華▼▲碩▼科技（▲蘇▼州）有限公司 | Connector and electronic system using it |
| CN103246335B (en) * | 2012-02-13 | 2016-01-27 | 联想(北京)有限公司 | Condition control method and electronic equipment |
| CN104220958B (en) * | 2012-02-29 | 2017-04-19 | 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 |
| 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 |
| 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 |
| 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, 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 |
Citations (2)
| 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 |
| CN100369349C (en) * | 2003-05-27 | 2008-02-13 | 捷讯研究有限公司 | Method and apparatus for controlling the charging state in a mobile electronic device |
-
2008
- 2008-03-25 CN CN200810300695XA patent/CN101546918B/en not_active Expired - Fee Related
Patent Citations (2)
| 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 |
| CN100369349C (en) * | 2003-05-27 | 2008-02-13 | 捷讯研究有限公司 | Method and apparatus for controlling the charging state in a mobile electronic device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375616A (en) * | 2011-02-11 | 2015-02-25 | 威盛电子股份有限公司 | adaptive universal serial bus charging method and system |
| CN104375616B (en) * | 2011-02-11 | 2018-01-09 | 威盛电子股份有限公司 | adaptive universal serial bus charging method and system |
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| Publication number | Publication date |
|---|---|
| CN101546918A (en) | 2009-09-30 |
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