CN101853970A - Method and device for charging through universal serial bus (USB) interface - Google Patents
Method and device for charging through universal serial bus (USB) interface Download PDFInfo
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- CN101853970A CN101853970A CN201010208116A CN201010208116A CN101853970A CN 101853970 A CN101853970 A CN 101853970A CN 201010208116 A CN201010208116 A CN 201010208116A CN 201010208116 A CN201010208116 A CN 201010208116A CN 101853970 A CN101853970 A CN 101853970A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
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Abstract
The embodiment of the invention discloses a method and a device for charging through a universal serial bus (USB) interface. The method comprises the following steps of: connecting a device to be charged with a power supply device through the USB interface; closing communication between a USB module and the power supply device; and charging the device to be charged by the power supply device through a power line on the USB interface. In the technical scheme of the invention, the communication between the USB module and the power supply device is stopped and the device to be charged is charged through the USB interface. In the method, the communication work of the USB module is stopped, so the USB module does not need to be always under a working condition when the device is charged through the USB interface; and the CPU of the device to be charged can stop working to make all current used for charging so as to improve the charging efficiency.
Description
Technical field
The present invention relates to the charging technique field, be specifically related to a kind of method and apparatus by the USB (universal serial bus) charging.
Background technology
USB (USB, Universal Serial Bus) charge function is meant the USB port by personal computer (PC, Personal Computer) or notebook computer, the function that terminal is charged.Two kinds on four lines and five lines are arranged on the USB hardware interface usually, and ordinary circumstance all is to use four lines, is respectively D+, D-, power supply and ground wire.According to the regulation in the usb protocol, the external output current that the USB port power line provides is restricted to 500mA, therefore the charge function of terminal often needs to add the electric current restriction, prevents to ask for above the agreement predetermined electric current and introduces the danger of burning PC or notebook internal circuit.
Present portable terminal is with after PC is connected by the USB cable, and ordinary circumstance can think that the user need use the USB function to carry out communicating by letter between PC and mobile phone.For example: the USB port on PC or the USB, by the USB cable with after mobile phone is connected, at first, the voltage that has 5V on the power line in the USB cable, on mobile phone, be to trigger corresponding interruption, thereby trigger handset starting USB initialization module by this voltage, by the variation on D+, the D-line, finish USB handshake function again with PC.After the USB handshake operation is finished, mobile phone correctly discern current connected be a USB main equipment, just can start the USB charge function then, be about to the 5V voltage on the USB power line, be connected on the charging circuit of mobile phone inside, start charging.According to usb protocol, the USB port of PC or notebook can provide the power supply capacity of the highest 500mA, but USB is under the situation of normal mode of operation, because mobile phone is wanted the USB instruction of time of day response from PC, therefore mobile phone can not allow to enter sleep pattern, cause the power consumption can be very big, reduced the electric current that is charged in the battery.
In research and practice process to prior art, the present inventor finds that in order in time to respond the USB order that PC initiates, the USB module of mobile phone is in the work state of activation always.Therefore, the electric current that USB port provides can be consumed by the mobile phone self working state greatly, causes really entering the electric current minimizing that battery storage is got up, and has increased the time of charging.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus by the USB (universal serial bus) charging, has overcome in the prior art by the low problem of USB interface charge efficiency.
The embodiment of the invention provides a kind of method by the USB (universal serial bus) charging, comprising:
By USB (universal serial bus) equipment to be charged is connected with power supply unit;
Close communicating by letter between universal serial bus module and the power supply unit;
Treating charging device by the power line of USB (universal serial bus) by power supply unit charges.
The embodiment of the invention also provides a kind of device by the USB (universal serial bus) charging, comprising: USB (universal serial bus), and universal serial bus module, battery, supply module, described device also comprises: control module; Wherein, by described USB (universal serial bus) this device is connected with electric supply installation;
Described control module is used to close communicating by letter between universal serial bus module and the power supply unit;
Described battery is used for treating charging device by the power line of USB (universal serial bus) by power supply unit and charges.
The embodiment of the invention also provides a kind of charging device with USB (universal serial bus), comprise: USB (universal serial bus), power module, and communication module, data wire on the USB (universal serial bus) links to each other with described communication module, power line on the USB (universal serial bus) links to each other with power module, and described device also comprises: charge control module is used for the data wire on described and the USB (universal serial bus) that communication module links to each other is disconnected.
The embodiment of the invention adopts and to stop to be recharged communicating by letter between the USB module and power supply unit in the equipment, charges to being recharged equipment by USB interface again.Owing to stopped the communication work of USB module in this method, then when charging, the USB module does not need in running order always equipment by USB interface, makes electric current all be used to charging, has improved charge efficiency.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the overview flow chart of a kind of method by USB interface charging of providing of the embodiment of the invention;
Fig. 2 is the particular flow sheet of a kind of method by USB interface charging of providing of the embodiment of the invention;
Fig. 3 is a kind of mobile phone by the USB interface simplified schematic diagram of charging;
Fig. 4 is the particular flow sheet of the another kind that provides of the embodiment of the invention by the method for USB interface charging;
Fig. 5 is the structural representation of the device by USB interface charging in the embodiment of the invention;
Fig. 6 is a kind of schematic diagram with charging device of USB interface that the embodiment of the invention provides.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is described in further detail below in conjunction with drawings and embodiments.
The overview flow chart of a kind of method by the USB interface charging that Figure 1 shows that the embodiment of the invention provides.
A kind of method by the USB interface charging that provides in the present embodiment is applied to the equipment by the USB interface charging, for example: mobile phone, MP4 etc.In the present embodiment, described method can comprise:
Step 100: equipment to be charged is connected with power supply unit by USB (universal serial bus);
Step 101: close communicating by letter between USB module and the power supply unit;
Wherein, close with communicating by letter of USB module and can adopt the turn-off data line, can not carry out data communication between the feasible equipment by the USB interface connection; Also the USB module in the equipment of needs charging can be closed, concrete employing will disconnect for the USB module provides the circuit of electric energy and this USB module, thereby close the USB module, can not carry out data communication between the feasible equipment by the USB interface connection; Also central processing unit (CPU, Center Process Unit) in the equipment of needs charging can cut out, thereby make the USB module not work, can not carry out data communication between the feasible equipment by the USB interface connection.
Step 102: treat charging device by the power line of USB interface by power supply unit and charge.
Because the power line on the USB interface remains normal connection, can charge to mobile phone.
Realized by above-mentioned steps 101 and step 102 that method by USB interface charging, this method adopt and stopped being recharged communicating by letter between the USB module and power supply unit in the equipment, charged to being recharged equipment by USB interface again.Owing to stopped the work of USB module in this method, then when charging, the USB module does not need in running order always equipment by USB interface, makes electric current all be used to charging, has improved charge efficiency.
Below to adopting different operating performing step 101 to be described in detail.
Fig. 2 is the particular flow sheet of the method for passing through the USB interface charging of the embodiment of the invention.Merge hardware designs in this method and realize stopping to be recharged communicating by letter between the USB module and power supply unit in the equipment.
Step 200: equipment to be charged is connected with power supply unit by USB (universal serial bus);
Step 201: will disconnect with the data wire of USB module communication;
Wherein, in the data wire of USB, increase switch,, make to be recharged the termination of communicating by letter between equipment (as: mobile phone) and the device (as: PC) of powering by the Push And Release of control switch.For example: a kind of mobile phone shown in Figure 3 increases a triode by the USB interface schematic diagram that charges on the data circuit in mobile phone, this triode is by the break-make of control D+ of the control module in the mobile phone and D-; Control module is sent concrete instruction according to user's concrete operations, enters the USB charge mode when the user operates, and then control module is by the not conducting of control triode, thereby the control triode is in off state, make the USB module it seems, current D+ and D-line interrupt, and do not connect.
Step 202: treat charging device by the power line of USB interface by power supply unit and charge.
Wherein, since the situation that simulation USB cable plugs in step 201, deception PC, and in fact, the power line on the USB interface remains normal connection, can charge to mobile phone.
By above-mentioned explanation to a kind of method by USB interface charging, as can be known between PC and the mobile phone as having carried out the associative operation that USB device withdraws from, the PC end can be removed relevant USB port, can carry out the USB device disconnection process on the mobile phone, withdraw from the USB module, like this, the mobile phone natural energy enters common standby sleep pattern.If the user selects to withdraw from the USB charge mode, then can recover the connection status of two lines of D+, D-and mobile phone USB device by control module, still being that mobile phone be it seems at PC so no matter, all is that the new USB device of standard connects, and can start normal initialize communications and connect.Thereby make USB device in charging process, can stop other module consumed power in the equipment of itself, make charge efficiency higher.
Fig. 4 is the particular flow sheet of the method for passing through the USB interface charging of the embodiment of the invention.Pure software realizes stopping to be recharged communicating by letter between the USB module and power supply unit in the equipment in this method.
Step 400: by USB (universal serial bus) equipment to be charged is connected with power supply unit,
Step 401: stop perhaps, closing the operating state of the CPU of the equipment of being recharged for being recharged the USB module for power supply in the equipment; Wherein, universal serial bus module links to each other with central processing unit, and universal serial bus module is accepted the control of central processing unit;
Wherein, the USB module is to provide electric energy to realize operate as normal by independent supply module (perhaps power supply circuits) in the equipment if this is recharged, and can be the USB module for power supply by the module of stopping power supply then, makes the USB module close.Therefore, realized stopping to be recharged communicating by letter between the USB module and power supply unit in the equipment.
If the USB module can not quit work by powered-down, also can take to close the operating state of the CPU in this charging device, thereby stop the work of USB module.Concrete operations can be: obtain the signal that enters charge mode; Pin falls whether the USB module allows to enter sleep to charging device the power of choosing in a vote; Enter sleep.It will be appreciated that after charging device entered sleep, the CPU in the charging device was out of service, so the USB module quits work, promptly realized stopping to be recharged communicating by letter between the USB module and power supply unit in the equipment, the USB module is also consumed power not certainly.
Step 402: treat charging device by the power line of USB interface by power supply unit and charge.
Can realize method based on above-mentioned steps 401 and step 402 by the USB interface charging, but, equipment from power supply, it seems as the PC end, the USB device that is connected with this PC is to be in a kind of abnormal operating state, can eject " USB device that can't discern " or " the USB device work that is connected with this machine is undesired " such prompting, and in fact, the USB device that is connected with this PC is in charging.If the USB device that is connected with this PC need communicate with PC, the user can select to withdraw from the USB charge mode, and then software can be carried out complete USB initialization flow process again again one time, establishes a communications link with PC again.
Need to prove that also before step 101, S201 or step 401, this method can also comprise: obtain the information that enters the USB charge mode, trigger execution in step 101, S201 or step 401 then.
The another kind of preferred methods that the embodiment of the invention is provided describes below, and PC is as electric supply installation in the method, with mobile phone as being recharged equipment.At least comprise in the mobile phone: USB interface, USB module, battery, supply module and CPU etc.When mobile phone by USB interface with after PC is connected, PC can charge to the battery on the mobile phone by the power line of USB port, when PC wishes to communicate by the USB module in data wire D+ and D-and the mobile phone, wish by this has the equipment (promptly discerning this mobile phone) of USB port with the communication identification of USB module as PC; But control unit in mobile phone control transistor control circuit transistor control circuit at this moment is set to not on-state, and therefore, transistor control circuit is with respect to switch, port the data wire of USB port and communicating by letter of USB module.At this moment, the power line by USB interface is charged to mobile phone by PC.
Mobile phone can also cut out the operating state of the CPU of self; Wherein, the USB module links to each other with central processing unit, and the USB module is accepted the control of central processing unit; In mobile phone, cancel the operating state of CPU, thereby stop the work of USB module.Concrete operations can be: obtain the signal that enters charge mode; Pin falls whether the USB module allows to enter sleep to charging device the power of choosing in a vote; Enter sleep.It will be appreciated that after charging device entered sleep, the CPU in the charging device was out of service, so the USB module quits work, promptly realized stopping communicating by letter between the USB module and power supply unit in the mobile phone, the USB module is also consumed power not certainly.
Above-mentioned be PC by a kind of specific implementation method of USB interface to cell-phone charging, should not be construed restriction to the embodiment of the invention.
Fig. 5 is the schematic representation of apparatus of charging by USB interface in the embodiment of the invention.In the present embodiment, this device comprises: USB module 501, battery 502, supply module 503, control module 504 and USB interface 505.
Wherein, by USB interface 505 equipment to be charged is connected with this device;
Preferably, control module 504 can be first switch specifically, is used for the data wire of USB module communication is disconnected.In conjunction with to the explanation among Fig. 2 and Fig. 3, will disconnect with the data wire of USB module communication, when this device is that PC connects, only there is the power line of USB interface in the device to link to each other with battery, battery is in charging, and the USB module can be not in running order.Therefore, the USB module can consumed power, has improved charge efficiency.Need to prove that this first switch can have the triode of being, also can be other device of realizing switching function.
Preferably, control module 504 can be a second switch specifically, and the module 503 that is used to stop power supply is 501 power supplies of USB module.By closing supply module 503, make the USB module not work, thereby close communicating by letter between USB module 501 and the power supply unit for USB module 501 provides electric energy.Therefore, when charging by USB interface, only have the power line of USB interface in the device to link to each other with battery, battery is in charging, and the USB module is consumed power not, has improved the charge efficiency of this device.
Preferably, control module 504 can be CPU specifically, is used to close self working state, also can be understood as self is in sleep state.Wherein, USB module 501 links to each other with CPU, and universal serial bus module is accepted the control of central processing unit.After CPU closed operating state, the operating state of corresponding USB module also was closed, and the USB module also can be understood as and is in sleep state, thereby closed communicating by letter between USB module 501 and the power supply unit.When being installed on PC when linking to each other, only there is the power line of USB interface in the device to link to each other with battery, battery is charging, and the USB module is in off position, the USB module is consumed power not, has improved the charge efficiency of this device.
The device of Fig. 5 explanation specifically can be the mobile phone with USB interface, MP3, palmtop PC etc.
A kind of schematic diagram that Fig. 6 provides for the embodiment of the invention with charging device of USB interface.In the present embodiment, this device can be PC, notebook computer etc., and this device comprises: USB interface 601, power module 602, communication module 603 and charge control module 604.
Wherein, have data wire and power line on the USB interface, wherein, data wire is connected with communication module 603, and power line is connected with battery module 602, is used for giving equipment charge to be charged by power line;
Charge control module 604, be used for with USB (universal serial bus) that communication module links to each other on data wire disconnect.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than the embodiment of the invention is described in detail, used embodiment herein the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the method by the USB (universal serial bus) charging is characterized in that, comprising:
By USB (universal serial bus) equipment to be charged is connected with power supply unit;
Close communicating by letter between universal serial bus module and the power supply unit;
Treating charging device by the power line of USB (universal serial bus) by power supply unit charges.
2. method according to claim 1 is characterized in that, describedly closes communicating by letter between universal serial bus module and the power supply unit, specifically comprises:
The data wire that to communicate by letter with described universal serial bus module disconnects.
3. method according to claim 1 is characterized in that, describedly closes communicating by letter between universal serial bus module and the power supply unit, specifically comprises:
Stop to be described universal serial bus module power supply.
4. method according to claim 1 is characterized in that, describedly closes communicating by letter between universal serial bus module and the power supply unit, specifically comprises:
Close the operating state of the central processing unit of the equipment of being recharged; Wherein, described universal serial bus module links to each other with described central processing unit, and universal serial bus module is accepted the control of central processing unit.
5. according to each described method of claim 1 to 4, it is characterized in that described power supply unit is a PC;
Describedly close communicating by letter between universal serial bus module and the power supply unit, specifically comprise:
The data wire that described PC is communicated by letter with described universal serial bus module disconnects;
Perhaps, stop to be described universal serial bus module power supply;
Perhaps, close the operating state of the central processing unit of the equipment of being recharged; Wherein, described universal serial bus module links to each other with described central processing unit, and universal serial bus module is accepted the control of central processing unit.
6. device by USB (universal serial bus) charging comprises: USB (universal serial bus), and universal serial bus module, battery, supply module is characterized in that, also comprises: control module; Wherein, by described USB (universal serial bus) this device is connected with electric supply installation;
Described control module is used to close communicating by letter between universal serial bus module and the power supply unit;
Described battery is used for treating charging device by the power line of USB (universal serial bus) by power supply unit and charges.
7. device according to claim 6 is characterized in that, described control module comprises:
First switch, the data wire that is used for communicating by letter with described universal serial bus module disconnects.
8. device according to claim 6 is characterized in that, described control module comprises:
Second switch is used to stop to be described universal serial bus module power supply.
9. device according to claim 6 is characterized in that, described control module comprises:
Central processing unit is used to cut out the operating state of the central processing unit of the equipment of being recharged; Wherein, described universal serial bus module links to each other with described central processing unit, and universal serial bus module is accepted the control of central processing unit.
10. charging device with USB (universal serial bus), comprise: USB (universal serial bus), power module, and communication module, data wire on the USB (universal serial bus) links to each other with described communication module, and the power line on the USB (universal serial bus) links to each other with power module, it is characterized in that, also comprise: charge control module is used for the data wire on described and the USB (universal serial bus) that communication module links to each other is disconnected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208116A CN101853970A (en) | 2010-06-21 | 2010-06-21 | Method and device for charging through universal serial bus (USB) interface |
| PCT/CN2011/076001 WO2011160572A1 (en) | 2010-06-21 | 2011-06-21 | Method and device for charging through universal serial bus interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208116A CN101853970A (en) | 2010-06-21 | 2010-06-21 | Method and device for charging through universal serial bus (USB) interface |
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| CN101853970A true CN101853970A (en) | 2010-10-06 |
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| CN201010208116A Pending CN101853970A (en) | 2010-06-21 | 2010-06-21 | Method and device for charging through universal serial bus (USB) interface |
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| WO (1) | WO2011160572A1 (en) |
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| WO2011160572A1 (en) * | 2010-06-21 | 2011-12-29 | 华为终端有限公司 | Method and device for charging through universal serial bus interface |
| CN102662895A (en) * | 2012-03-26 | 2012-09-12 | 华为终端有限公司 | Communication method, device and system of peripheral input/output equipment |
| CN104423278A (en) * | 2013-08-27 | 2015-03-18 | 华为终端有限公司 | Mobile power supplying terminal and power supplying method thereof |
| CN106160055A (en) * | 2015-04-20 | 2016-11-23 | 联想(北京)有限公司 | Charger and charge control method |
| TWI563365B (en) * | 2011-10-31 | 2016-12-21 | Smsc Holdings Sarl | Device charging over usb using a plurality of handshakes |
| CN106828161A (en) * | 2017-02-13 | 2017-06-13 | 清华大学 | One kind is applied to multichannel charging socket charging equipment of electric automobile and its control method |
| CN106874232A (en) * | 2015-12-14 | 2017-06-20 | 中兴通讯股份有限公司 | The charging method of general-purpose serial bus USB, device and terminal |
| WO2018076445A1 (en) * | 2016-10-31 | 2018-05-03 | 宇龙计算机通信科技(深圳)有限公司 | Charging method and mobile terminal |
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| WO2011160572A1 (en) * | 2010-06-21 | 2011-12-29 | 华为终端有限公司 | Method and device for charging through universal serial bus interface |
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| CN102662895A (en) * | 2012-03-26 | 2012-09-12 | 华为终端有限公司 | Communication method, device and system of peripheral input/output equipment |
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| CN106874232A (en) * | 2015-12-14 | 2017-06-20 | 中兴通讯股份有限公司 | The charging method of general-purpose serial bus USB, device and terminal |
| WO2018076445A1 (en) * | 2016-10-31 | 2018-05-03 | 宇龙计算机通信科技(深圳)有限公司 | Charging method and mobile terminal |
| CN106828161A (en) * | 2017-02-13 | 2017-06-13 | 清华大学 | One kind is applied to multichannel charging socket charging equipment of electric automobile and its control method |
| WO2019061287A1 (en) * | 2017-09-29 | 2019-04-04 | 华为技术有限公司 | Electronic apparatus and method and device for reducing power consumption |
| CN110168511A (en) * | 2017-09-29 | 2019-08-23 | 华为技术有限公司 | A kind of electronic equipment and the method and device for reducing power consumption |
| CN110168511B (en) * | 2017-09-29 | 2021-02-09 | 华为技术有限公司 | Electronic equipment and method and device for reducing power consumption |
| US11061464B2 (en) | 2017-09-29 | 2021-07-13 | Huawei Technologies Co., Ltd. | Electronic device, method for reducing power consumption, and apparatus |
| CN111338452A (en) * | 2020-02-05 | 2020-06-26 | Tcl移动通信科技（宁波）有限公司 | Method and system for simulating accelerated charging of USB flash disk, storage medium and mobile terminal |
| CN111338452B (en) * | 2020-02-05 | 2023-08-18 | 深圳盛科威电子有限公司 | Method, system, storage medium and mobile terminal for simulating acceleration charging of U disk |
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| WO2011160572A1 (en) | 2011-12-29 |
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