CN106340937A - OTG low-voltage charging method and mobile terminal - Google Patents
OTG low-voltage charging method and mobile terminal Download PDFInfo
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- CN106340937A CN106340937A CN201611043853.9A CN201611043853A CN106340937A CN 106340937 A CN106340937 A CN 106340937A CN 201611043853 A CN201611043853 A CN 201611043853A CN 106340937 A CN106340937 A CN 106340937A
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- 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
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Telephone Function (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses an on-the-go low-voltage charging method, thereby improving the charging efficiency and reducing heating during a charging process. The method comprises: a first mobile terminal is connected with a second mobile terminal, wherein the first mobile terminal and the second mobile terminal have OTG charging functions; the first mobile terminal determines that the first mobile terminal and the second mobile terminal are a master unit and a slave unit respectively, wherein the master unit is used for charging the slave unit; the first mobile terminal obtains a battery voltage VBAT1 of the first mobile terminal and a battery voltage VBAT2 of the second mobile terminal periodically; and the first mobile terminal selects a corresponding charging way to charge the second mobile terminal based on the battery voltage VBAT1 of the first mobile terminal and the battery voltage VBAT2 of the second mobile terminal. In addition, the embodiment of the invention also provides a mobile terminal. Therefore, the charging efficiency can be improved and heating during the charging process can be reduced.
Description
Technical field
The present invention relates to charging technique field, method and mobile terminal that more particularly, to a kind of otg low pressure charges.
Background technology
Otg is the abbreviation of on-the-go, is technology developed in recent years, be mainly used in various different equipment or
Connection between mobile device, carries out the exchange of data.Otg function is used for the data exchange between distinct device at present, particularly
Pda, mobile phone, consumer devices.
At present, when charging equipment adopts otg technology to be used for charging between 2 mobile phones, main equipment is needed to boost to 5v, from equipment
It is depressured, be then given to battery and charge again.
In charging process, need main equipment to boost to 5v by booster circuit, be then given to electricity carrying out step-down from equipment
Charge in pond.Electric energy in the boosting of main equipment and all can produce loss from the pressure reduction of equipment, and the utilization ratio of electric energy is low,
The electric energy wasting can produce heat makes apparatus overheat.
Content of the invention
Embodiments provide a kind of method that otg low pressure charges, for improving charge efficiency, reduce charging process
In heating.
In view of this, first aspect present invention provides a kind of method that otg low pressure charges, comprising: the first mobile terminal
Set up with the second mobile terminal and be connected, described first mobile terminal and described second mobile terminal all have otg charge function；Institute
State the first mobile terminal and determine that described first mobile terminal and described second mobile terminal are respectively main frame and slave, described main frame
For charging to described slave；Described first mobile terminal period ground obtains the cell voltage of described first mobile terminal
The vbat1 and cell voltage vbat2 of described second mobile terminal；Described first mobile terminal is according to described first mobile terminal
Cell voltage vbat1 selects corresponding charging modes to the described second shifting with the cell voltage vbat2 of described second mobile terminal
Dynamic terminal charge.
In conjunction with the embodiment of the present invention in a first aspect, in the first implementation of embodiment of the present invention first aspect, institute
State the first mobile terminal described vbat1 is periodically adjusted according to described vbat1 and described vbat2 and include: work as vbat1 vbat2
During+vth, described first mobile terminal passes through preset buck circuit and charges to described second mobile terminal, and described vth is preset
Voltage difference；As vbat1=vbat2+vth, described first mobile terminal passes through switch ways directly to the described second shifting
Dynamic terminal charge, described vth is preset voltage difference；As vbat1, < during vbat2+vth, described first mobile terminal passes through pre-
The boost circuit put charges to described second mobile terminal, and described vth is preset voltage difference.
In conjunction with the embodiment of the present invention in a first aspect, in the second implementation of embodiment of the present invention first aspect, institute
State the first mobile terminal and set up with the second mobile terminal and be connected, described first mobile terminal and described second mobile terminal all have
Otg charge function includes: described first mobile terminal is set up with the second mobile terminal and is connected；Described first mobile terminal passes through d
+, d- communication loop shaken hands with described second mobile terminal, determine described first mobile terminal and described second mobile terminal
All there is otg charge function.
In conjunction with the embodiment of the present invention in a first aspect, in the third implementation of embodiment of the present invention first aspect, institute
State the first mobile terminal and determine that described first mobile terminal and described second mobile terminal respectively main frame and slave include: be described
First mobile terminal passes through d+, d- communication loop and described second mobile terminal communicating battery information of voltage, when the described first shifting
When the cell voltage of dynamic terminal is more than or equal to the cell voltage of described second mobile terminal, described first mobile terminal determines institute
State the first mobile terminal and described second mobile terminal is respectively main frame and slave；Or, described first mobile terminal is according to user
Selection determine that described first mobile terminal and described second mobile terminal are respectively main frame and slave.
In conjunction with arbitrary implementation to the third implementation of first aspect for the first aspect of the embodiment of the present invention,
In the 4th kind of implementation of embodiment of the present invention first aspect, methods described also includes: if described first mobile terminal
Battery electric quantity is less than the threshold value setting, then described first mobile terminal stops charging for described second mobile terminal.
Second aspect present invention provides a kind of mobile terminal, and described mobile terminal is the first mobile terminal, comprising: process
Unit, is connected for being set up with the second mobile terminal, described first mobile terminal and described second mobile terminal all have otg and fill
Electricity Functional；Determining unit, for determining described first mobile terminal and described second mobile terminal respectively main frame and slave, institute
State main frame for charging to described slave；Acquiring unit, for periodically obtaining the cell voltage of described first mobile terminal
The vbat1 and cell voltage vbat2 of described second mobile terminal；Charhing unit, for the electricity according to described first mobile terminal
Cell voltage vbat1 selects corresponding charging modes mobile to described second with the cell voltage vbat2 of described second mobile terminal
Terminal charge.
In conjunction with the second aspect of the embodiment of the present invention, in the first implementation of embodiment of the present invention second aspect, institute
State charhing unit to include: the first charging module, as vbat1 > vbat2+vth when, for by preset buck circuit to described
Second mobile terminal charges, and described vth is preset voltage difference；Second charging module, as vbat1=vbat2+vth, uses
In directly being charged to described second mobile terminal by switch ways, described vth is preset voltage difference；3rd charging mould
Block, when vbat1 < during vbat2+vth, for by preset boost circuit to described second mobile terminal charge, described vth
For preset voltage difference.
In conjunction with the second aspect of the embodiment of the present invention, in the second implementation of embodiment of the present invention second aspect, institute
State processing unit to include: link block, it is connected for setting up with the second mobile terminal；Processing module, for being communicated by d+, d-
Being shaken hands with described second mobile terminal in loop, determines that described first mobile terminal and described second mobile terminal all have
Otg charge function.
In conjunction with the second aspect of the embodiment of the present invention, in the third implementation of embodiment of the present invention second aspect, institute
State determining unit to include: the first determining module, for by d+, d- communication loop and described second mobile terminal communicating battery electricity
Pressure information, when the cell voltage of described first mobile terminal is more than or equal to the cell voltage of described second mobile terminal, really
Fixed described first mobile terminal and described second mobile terminal are respectively main frame and slave；Or, the second determining module, for basis
The selection of user determines that described first mobile terminal and described second mobile terminal are respectively main frame and slave.
In conjunction with arbitrary implementation to the third implementation of second aspect for the second aspect of the embodiment of the present invention,
In the 4th kind of implementation of embodiment of the present invention second aspect, described mobile terminal also includes: control unit, if described
The battery electric quantity of one mobile terminal is less than the threshold value setting, then stop mobile whole to described second for described first mobile terminal
Charge in end.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
In the embodiment of the present invention, the first mobile terminal with second mobile terminal set up is connected, described first mobile terminal with
Described second mobile terminal all has otg charge function；Described first mobile terminal determines described first mobile terminal and described
Second mobile terminal is respectively main frame and slave, and described main frame is used for charging to described slave；Described first mobile terminal period
Property ground obtain the cell voltage vbat1 of the described first mobile terminal and cell voltage vbat2 of described second mobile terminal；Described
First mobile terminal selects according to the cell voltage vbat1 of the first mobile terminal and cell voltage vbat2 of the second mobile terminal
Corresponding charging modes charge to described second mobile terminal.Present invention determine that after main frame and slave, according to the main frame getting
With the battery voltage information of slave, select different charging modes to be charged, improve charge efficiency, reduce in charging process
Heating.
Brief description
Fig. 1 is the connection diagram of the mobile terminal in the embodiment of the present invention；
Fig. 2 is one embodiment schematic diagram of method that in the embodiment of the present invention, otg low pressure charges；
Fig. 3 is another embodiment schematic diagram of method that in the embodiment of the present invention, otg low pressure charges；
Fig. 4 is an embodiment schematic diagram of mobile terminal in the embodiment of the present invention；
Fig. 5 is another embodiment schematic diagram of mobile terminal in the embodiment of the present invention；
Fig. 6 is another embodiment schematic diagram of mobile terminal in the embodiment of the present invention.
Specific embodiment
Embodiments provide a kind of method that otg low pressure charges, for improving charge efficiency, reduce charging process
In heating.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention it is clear that described embodiment is only
The embodiment of a present invention part, rather than whole embodiments.
Term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second ", " the 3rd ", "
Four " etc. (if present) is for distinguishing similar object, without for describing specific order or precedence.Should manage
The data that solution so uses can be exchanged, in the appropriate case so that the embodiments described herein can be with except illustrating here
Or the order enforcement beyond the content of description.Additionally, term " inclusion " or " having " and its any deformation are it is intended that cover not
Exclusive comprises, for example, contain series of steps or unit process, method, system, product or equipment be not necessarily limited to clear
Those steps of listing or unit, but may include clearly not listing or for these processes, method, product or set
Standby intrinsic other steps or unit.
In existing scheme, voltage (3.6-4.35v) is boosted to 5v through the boosting of main frame by the electric current of host mobility terminal,
Then electric current exports the charging port of slave mobile terminal, and voltage drops to the battery electricity of slave through the reduction voltage circuit of slave
Nearby (as vbat+0.2v), electric current charges pressure to the battery of slave.This process electric energy is depressured through once boosting and once, damages
Consumption is very big, and the utilization rate of electric energy is low.
In the embodiment of the present invention, the first mobile terminal is set up with the second mobile terminal and is connected, the first mobile terminal and second
Mobile terminal all has otg charge function；First mobile terminal determines based on the first mobile terminal and the second mobile terminal difference
Machine and slave, main frame is used for charging to slave；First mobile terminal period ground obtains the cell voltage of the first mobile terminal
The cell voltage vbat2 of vbat1 and the second mobile terminal；First mobile terminal is according to the cell voltage of the first mobile terminal
Vbat1 selects corresponding charging modes to charge to the second mobile terminal with the cell voltage vbat2 of the second mobile terminal.The present invention
After determining main frame and slave, according to the battery voltage information of the main frame getting and slave, different charging modes are selected to carry out
Charge, improve charge efficiency, reduce the heating in charging process.As shown in figure 1, in the present invention mobile terminal connection signal
Figure.
For ease of understanding, below the idiographic flow in the embodiment of the present invention is described, refers to Fig. 2, the present invention is real
Apply one embodiment of method of otg low pressure charging to include:
201st, the first mobile terminal is set up with the second mobile terminal and is connected, and the first mobile terminal and the second mobile terminal all have
There is otg charge function.
First mobile terminal is connected with the second mobile terminal by otg charge cable, and otg charge cable is connected
Two mobile terminals all possess otg charge function, the mobile terminal of connection can realize battery letter by this otg charge cable
The interaction of breath, and transmit charging current.
202nd, the first mobile terminal determines that the first mobile terminal and the second mobile terminal are respectively main frame and slave, and main frame is used
In charging to slave.
First mobile terminal determines that the first mobile terminal is the main frame charging, and the second mobile terminal is the slave charging.
203rd, the first mobile terminal period ground obtains cell voltage vbat1 and second mobile terminal of the first mobile terminal
Cell voltage vbat2.
After the first mobile terminal is confirmed to be main frame, according to preset time interval, the first mobile terminal period ground
From the first acquisition for mobile terminal battery voltage information vbat1, and by d+, d- communication loop from the second acquisition for mobile terminal electricity
Cell voltage information vbat2.
204th, the first mobile terminal is electric according to the cell voltage vbat1 of the first mobile terminal and the battery of the second mobile terminal
Pressure vbat2 selects corresponding charging modes to charge to the second mobile terminal.
First mobile terminal periodically adjusts the first mobile terminal to the second shifting according to vbat1 and vbat2 getting
The mode of dynamic terminal charge.According to preset time interval, whenever the first mobile terminal reacquires new cell voltage
During vbat1 and vbat2, the first mobile terminal correspondingly adjusts the charging modes to the second mobile terminal.
In the embodiment of the present invention, the first mobile terminal is set up with the second mobile terminal and is connected, the first mobile terminal and second
Mobile terminal all has otg charge function；First mobile terminal determines based on the first mobile terminal and the second mobile terminal difference
Machine and slave, main frame is used for charging to slave；First mobile terminal period ground obtains the cell voltage of the first mobile terminal
The cell voltage vbat2 of vbat1 and the second mobile terminal；First mobile terminal is according to the cell voltage of the first mobile terminal
Vbat1 selects corresponding charging modes to charge to the second mobile terminal with the cell voltage vbat2 of the second mobile terminal.The present invention
By d+, d- communication acknowledgement main frame and slave battery voltage information, then it is charged way choice, completes charging process,
Improve charge efficiency, reduce the heating in charging process.
Refer to Fig. 3, another embodiment of method that embodiment of the present invention otg low pressure charges includes:
301st, the first mobile terminal is set up with the second mobile terminal and is connected, and the first mobile terminal and the second mobile terminal all have
There is otg charge function.
First mobile terminal is set up with the second mobile terminal and is connected, and the first mobile terminal is by d+, d- communication loop and the
Two mobile terminals are shaken hands, and determine that the first mobile terminal and the second mobile terminal all have otg charge function.
302nd, the first mobile terminal determines that the first mobile terminal and the second mobile terminal are respectively main frame and slave.
First mobile terminal passes through d+, d- communication loop and the second mobile terminal communicating battery information of voltage, when the first shifting
When the cell voltage of dynamic terminal is more than the cell voltage of the second mobile terminal, the first mobile terminal determines the first mobile terminal and the
Two mobile terminals are respectively main frame and slave；Or, the first mobile terminal determines the first mobile terminal and according to the selection of user
Two mobile terminals are respectively main frame and slave.
303rd, the first mobile terminal period ground obtains cell voltage vbat1 and second mobile terminal of the first mobile terminal
Cell voltage vbat2.
After the first mobile terminal is confirmed to be main frame, according to preset time interval, the first mobile terminal period ground
From the first acquisition for mobile terminal cell voltage vbat1, and by d+, d- communication loop from the second acquisition for mobile terminal battery electricity
Pressure vbat2.
304th, the first mobile terminal is electric according to the cell voltage vbat1 of the first mobile terminal and the battery of the second mobile terminal
Pressure vbat2 selects corresponding charging modes to charge to the second mobile terminal.
As vbat1 > vbat2+vth when, the first mobile terminal is charged to the second mobile terminal by preset buck circuit,
Vth is preset voltage difference；As vbat1=vbat2+vth, the first mobile terminal passes through switch ways directly to the second shifting
Dynamic terminal charge, vth is preset voltage difference；As vbat1, < during vbat2+vth, the first mobile terminal passes through preset
Boost circuit charges to the second mobile terminal, and vth is preset voltage difference.This preset voltage difference can be set as difference
Value, vth=0.2v, vth can also be other values, specifically do not limit herein.
For example, within the cycle very first time, the battery voltage value of the first acquisition for mobile terminal to the first mobile terminal is 4v,
The battery voltage value of the second mobile terminal is 2.5v, and preset voltage difference is 0.2v, then the first mobile terminal judges 4v > 2.5v
+ 0.2v, now the first mobile terminal select preset buck circuit to charge to the second mobile terminal, this preset buck circuit meeting
The cell voltage of the first mobile terminal is dropped to 2.7v；Through charging after a while, within the second time cycle, first is mobile
The battery voltage value that terminal gets the first mobile terminal is 3.2v, and the battery voltage value of the second mobile terminal is 3v, preset electricity
Pressure difference is 0.2v, then the first mobile terminal judges 3.2v=3v+0.2v, then it is straight that the first mobile terminal passes through switch ways
Connect and charge to the second mobile terminal.Again through charging after a while, within the 3rd time cycle, the first acquisition for mobile terminal arrives
The battery voltage value of the first mobile terminal is 2.5v, and the battery voltage value of the second mobile terminal is 3.2v, and preset voltage difference is
0.2v, then the first mobile terminal judges 2.5v < 3.2v+0.2v, now the first mobile terminal select preset boost circuit to
Second mobile terminal charges, and the cell voltage of the first mobile terminal can be raised to 3.4v from 2.5v by this preset boost circuit.
If the battery electric quantity of 305 first mobile terminals is less than the threshold value setting, the first mobile terminal stops as the second shifting
Dynamic terminal charge.
During the first mobile terminal charges to the second mobile terminal, the first mobile terminal is to the first mobile terminal
Battery electric quantity is monitored, if the dump energy of the battery of the first mobile terminal is less than the threshold value setting, the first mobile terminal
Power circuit is controlled to stop being charged for the second mobile terminal.
In the embodiment of the present invention, the first mobile terminal is set up with the second mobile terminal and is connected, the first mobile terminal and second
Mobile terminal all has otg charge function；First mobile terminal determines based on the first mobile terminal and the second mobile terminal difference
Machine and slave, main frame is used for charging to slave；First mobile terminal period ground obtains the cell voltage of the first mobile terminal
The cell voltage vbat2 of vbat1 and the second mobile terminal；First mobile terminal is according to the cell voltage of the first mobile terminal
Vbat1 selects corresponding charging modes to charge to the second mobile terminal with the cell voltage vbat2 of the second mobile terminal；If first
The battery electric quantity of mobile terminal is less than the threshold value setting, then the first mobile terminal stops charging for the second mobile terminal.The present invention
By d+, d- communication acknowledgement main frame and slave battery voltage information, then it is charged way choice and completes charging process,
Improve charge efficiency, reduce the heating in charging process.
The method above otg low pressure in the embodiment of the present invention being charged is described, below in the embodiment of the present invention
Mobile terminal be described, refer to Fig. 4, the mobile terminal in the embodiment of the present invention includes:
Processing unit 401, is connected for being set up with the second mobile terminal, the first mobile terminal and the second mobile terminal all have
There is otg charge function；
Determining unit 402, for determining the first mobile terminal and the second mobile terminal respectively main frame and slave, main frame is used
In charging to slave；
Acquiring unit 403, battery voltage information vbat1 and second for periodically obtaining the first mobile terminal are mobile
Battery voltage information vbat2 of terminal；
Charhing unit 404, for the battery electricity of the cell voltage vbat1 according to the first mobile terminal and the second mobile terminal
Pressure vbat2 selects corresponding charging modes to charge to the second mobile terminal.
In the embodiment of the present invention, processing unit 401 is set up with the second mobile terminal and is connected, and the first mobile terminal and second moves
Dynamic terminal all has otg charge function；Determining unit 402 determine the first mobile terminal and the second mobile terminal be respectively main frame and
Slave, main frame is used for charging to slave；Acquiring unit 403 periodically obtain the first mobile terminal cell voltage vbat1 and
The cell voltage vbat2 of the second mobile terminal；Charhing unit 404 is according to the cell voltage vbat1 and second of the first mobile terminal
The cell voltage vbat2 of mobile terminal selects corresponding charging modes to charge to the second mobile terminal.The present invention passes through d+, d- and leads to
Letter confirms main frame and slave battery voltage information, is then charged way choice, completes charging process, improves charging effect
Rate, reduces the heating in charging process.
Refer to Fig. 5, another embodiment of mobile terminal in the embodiment of the present invention, comprising:
Processing unit 401, is connected for being set up with the second mobile terminal, the first mobile terminal and the second mobile terminal all have
There is otg charge function；
Determining unit 402, for determining the first mobile terminal and the second mobile terminal respectively main frame and slave, main frame is used
In charging to slave；
Acquiring unit 403, battery voltage information vbat1 and second for periodically obtaining the first mobile terminal are mobile
Battery voltage information vbat2 of terminal；
Charhing unit 404, for the battery electricity of the cell voltage vbat1 according to the first mobile terminal and the second mobile terminal
Pressure vbat2 selects corresponding charging modes to charge to the second mobile terminal.
Wherein, charhing unit 404 mays include:
First charging module 4041, as vbat1 > vbat2+vth when, for mobile to second by preset buck circuit
Terminal charge, vth is preset voltage difference；
Second charging module 4042, as vbat1=vbat2+vth, for directly mobile to second by switch ways
Terminal charge, vth is preset voltage difference；
3rd charging module 4043, when vbat1 is < during vbat2+vth, for being moved to second by preset boost circuit
Dynamic terminal charge, vth is preset voltage difference.
Wherein, connection unit 401 mays include:
Link block 4011, is connected for being set up with the second mobile terminal；
Processing module 4012, for being shaken hands with the second mobile terminal by d+, d- communication loop, determines that first is mobile
Terminal and the second mobile terminal all have otg charge function.
Wherein it is determined that unit 402 mays include:
First determining module 4021, for by d+, d- communication loop and the second mobile terminal communicating battery information of voltage,
When the first mobile terminal cell voltage be more than or equal to the second mobile terminal cell voltage when, determine the first mobile terminal and
Second mobile terminal is respectively main frame and slave；
Or,
Second determining module 4022, for determining the first mobile terminal and the second mobile terminal respectively according to the selection of user
For main frame and slave.
In the embodiment of the present invention, processing unit 401 is set up with the second mobile terminal and is connected, and the first mobile terminal and second moves
Dynamic terminal all has otg charge function；Determining unit 402 determine the first mobile terminal and the second mobile terminal be respectively main frame and
Slave, main frame is used for charging to slave；Acquiring unit 403 periodically obtain the first mobile terminal cell voltage vbat1 and
The cell voltage vbat2 of the second mobile terminal；Charhing unit 404 is according to the cell voltage vbat1 and second of the first mobile terminal
The cell voltage vbat2 of mobile terminal selects corresponding charging modes to charge to the second mobile terminal.The present invention passes through d+, d- and leads to
Letter confirms main frame and slave battery voltage information, is then charged way choice, completes charging process, improves charging effect
Rate, reduces the heating in charging process.
Refer to Fig. 6, another embodiment of mobile terminal in the embodiment of the present invention, comprising:
Processing unit 401, is connected for being set up with the second mobile terminal, the first mobile terminal and the second mobile terminal all have
There is otg charge function；
Determining unit 402, for determining the first mobile terminal and the second mobile terminal respectively main frame and slave, main frame is used
In charging to slave；
Acquiring unit 403, battery voltage information vbat1 and second for periodically obtaining the first mobile terminal are mobile
Battery voltage information vbat2 of terminal；
Charhing unit 404, for the battery electricity of the cell voltage vbat1 according to the first mobile terminal and the second mobile terminal
Pressure vbat2 selects corresponding charging modes to charge to the second mobile terminal.
Mobile terminal can further include:
Control unit 405, if the battery electric quantity of the first mobile terminal is less than the threshold value setting, is used for the first mobile terminal
Stop charging for the second mobile terminal.
In the embodiment of the present invention, processing unit 401 is set up with the second mobile terminal and is connected, and the first mobile terminal and second moves
Dynamic terminal all has otg charge function；Determining unit 402 determine the first mobile terminal and the second mobile terminal be respectively main frame and
Slave, main frame is used for charging to slave；Acquiring unit 403 periodically obtain the first mobile terminal cell voltage vbat1 and
The cell voltage vbat2 of the second mobile terminal；Charhing unit 404 is according to the cell voltage vbat1 and second of the first mobile terminal
The cell voltage vbat2 of mobile terminal selects corresponding charging modes to charge to the second mobile terminal；If the first mobile terminal
Battery electric quantity is less than the threshold value setting, then stop charging for the second mobile terminal for the first mobile terminal.The present invention pass through d+,
D- communication acknowledgement main frame and slave battery voltage information, are then charged way choice, complete charging process, improve and fill
Electrical efficiency, reduces the heating in charging process.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
Device and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
It should be understood that disclosed system in several embodiments provided herein, apparatus and method are permissible
Realize by another way.For example, device embodiment described above is only schematically, for example, described unit
Divide, only a kind of division of logic function, actual can have other dividing mode when realizing, for example multiple units or assembly
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not execute.Another, shown or
The coupling each other discussing or direct-coupling or communication connection can be by some interfaces, the indirect coupling of device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The described unit illustrating as separating component can be or may not be physically separate, show as unit
The part showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.The mesh to realize this embodiment scheme for some or all of unit therein can be selected according to the actual needs
's.
In addition, can be integrated in a processing unit in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be to be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If described integrated unit is realized and as independent production marketing or use using in the form of SFU software functional unit
When, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part in other words prior art being contributed or all or part of this technical scheme can be in the form of software products
Embody, this computer software product is stored in a storage medium, including some instructions with so that a computer
Equipment (can be personal computer, server, or network equipment etc.) executes the complete of each embodiment methods described of the present invention
Portion or part steps.And aforesaid storage medium includes: u disk, portable hard drive, read-only storage (rom, read-only
Memory), random access memory (ram, random access memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example only in order to technical scheme to be described, is not intended to limit；Although with reference to front
State embodiment the present invention has been described in detail, it will be understood by those within the art that: it still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to wherein some technical characteristics；And these
Modification or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of method that otg low pressure charges is it is characterised in that include:
First mobile terminal is set up with the second mobile terminal and is connected, and described first mobile terminal and described second mobile terminal all have
There is otg charge function；
Described first mobile terminal determines that described first mobile terminal and described second mobile terminal are respectively main frame and slave, institute
State main frame for charging to described slave；
Described first mobile terminal period ground obtains the cell voltage vbat1 of described first mobile terminal and described second and moves
The cell voltage vbat2 of terminal；
The cell voltage vbat1 according to described first mobile terminal for described first mobile terminal and the electricity of described second mobile terminal
Cell voltage vbat2 selects corresponding charging modes to charge to described second mobile terminal.
2. method according to claim 1 is it is characterised in that described first mobile terminal is according to described first mobile terminal
The cell voltage vbat2 of cell voltage vbat1 and described second mobile terminal select corresponding charging modes to described second
Mobile terminal charges and includes:
As vbat1 > vbat2+vth when, described first mobile terminal passes through preset buck circuit to described second mobile terminal
Charge, described vth is preset voltage difference；
As vbat1=vbat2+vth, described first mobile terminal is directly filled to described second mobile terminal by switch ways
Electricity, described vth is preset voltage difference；
As vbat1, < during vbat2+vth, described first mobile terminal passes through preset boost circuit to described second mobile terminal
Charge, described vth is preset voltage difference.
3. method according to claim 1 is it is characterised in that described first mobile terminal and the second mobile terminal are set up even
Connect, described first mobile terminal and described second mobile terminal all have otg charge function and include:
Described first mobile terminal is set up with the second mobile terminal and is connected；
Described first mobile terminal is shaken hands with described second mobile terminal by d+, d- communication loop, determines described first
Mobile terminal and described second mobile terminal all have otg charge function.
4. method according to claim 1 is it is characterised in that described first mobile terminal determines described first mobile terminal
It is respectively main frame with described second mobile terminal and slave includes:
Described first mobile terminal passes through d+, d- communication loop and described second mobile terminal communicating battery information of voltage, works as institute
State the first mobile terminal cell voltage be more than or equal to described second mobile terminal cell voltage when, described first mobile eventually
End determines that described first mobile terminal and described second mobile terminal are respectively main frame and slave；
Or,
Described first mobile terminal determines described first mobile terminal and described second mobile terminal respectively according to the selection of user
For main frame and slave.
5. method according to any one of claim 1 to 4 is it is characterised in that methods described also includes:
If the battery electric quantity of described first mobile terminal is less than the threshold value setting, described first mobile terminal stops to described the
Two mobile terminals charge.
6. a kind of mobile terminal is it is characterised in that described mobile terminal is the first mobile terminal, comprising:
Processing unit, is connected for being set up with the second mobile terminal, described first mobile terminal and described second mobile terminal are all
There is otg charge function；
Determining unit, for determining described first mobile terminal and described second mobile terminal respectively main frame and slave, described
Main frame is used for charging to described slave；
Acquiring unit, for periodically obtaining battery voltage information vbat1 of described first mobile terminal and described second shifting
Battery voltage information vbat2 of dynamic terminal；
Charhing unit, for the battery of the cell voltage vbat1 according to described first mobile terminal and described second mobile terminal
Voltage vbat2 selects corresponding charging modes to charge to described second mobile terminal.
7. mobile terminal according to claim 6 is it is characterised in that described charhing unit includes:
First charging module, as vbat1 > vbat2+vth when, for by preset buck circuit to described second mobile terminal
Charge, described vth is preset voltage difference；
Second charging module, as vbat1=vbat2+vth, for by switch ways directly to described second mobile terminal
Charge, described vth is preset voltage difference；
3rd charging module, when vbat1 is < during vbat2+vth, for mobile whole to described second by preset boost circuit
Charge in end, described vth is preset voltage difference.
8. mobile terminal according to claim 6 is it is characterised in that described processing unit includes:
Link block, is connected for being set up with the second mobile terminal；
Processing module, for being shaken hands with described second mobile terminal by d+, d- communication loop, determines that described first is mobile
Terminal and described second mobile terminal all have otg charge function.
9. mobile terminal according to claim 6 is it is characterised in that described determining unit includes:
First determining module, for by d+, d- communication loop and described second mobile terminal communicating battery information of voltage, working as institute
State the first mobile terminal cell voltage be more than or equal to described second mobile terminal cell voltage when, determine described first shifting
Dynamic terminal and described second mobile terminal are respectively main frame and slave；
Or,
Second determining module, for determining described first mobile terminal and described second mobile terminal respectively according to the selection of user
For main frame and slave.
10. the mobile terminal according to any one of claim 6 to 9 is it is characterised in that described mobile terminal also includes:
Control unit, if the battery electric quantity of described first mobile terminal is less than the threshold value setting, mobile whole for described first
End stops charging to described second mobile terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611043853.9A CN106340937A (en) | 2016-11-22 | 2016-11-22 | OTG low-voltage charging method and mobile terminal |
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| CN201611043853.9A CN106340937A (en) | 2016-11-22 | 2016-11-22 | OTG low-voltage charging method and mobile terminal |
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Application publication date: 20170118 |