CN104953678A - Control method and system for mutual charging of mobile terminals - Google Patents
Control method and system for mutual charging of mobile terminals Download PDFInfo
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- CN104953678A CN104953678A CN201510426601.3A CN201510426601A CN104953678A CN 104953678 A CN104953678 A CN 104953678A CN 201510426601 A CN201510426601 A CN 201510426601A CN 104953678 A CN104953678 A CN 104953678A
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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
- 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
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Abstract
The invention belongs to the field of charge control and provides a control method and system for mutual charging of mobile terminals. Under the circumstance that a main mobile terminal and an auxiliary mobile terminal meet an electric energy mutual charging condition, the battery of the main mobile terminal is enabled to charge the battery of the auxiliary mobile terminal, and the battery voltage and battery output current in the main mobile terminal as well as the battery voltage and battery input current in the auxiliary mobile terminal are detected in real time in the charging process; when the battery output current and/or battery input current are/is too high, the charge current to the auxiliary mobile terminal is reduced; when the battery output current and/or battery input current are/is less than the lower limit value of the charge current, and a difference between the battery voltage of the main mobile terminal and the battery voltage of the auxiliary mobile terminal is less than the charge voltage difference threshold, the battery of the main mobile terminal stops charging the battery of the auxiliary mobile terminal; in the charging process, voltage increase and voltage reduction on the direct current are not required in the charging process, electric energy loss is effectively reduced, the charging time is effectively shortened, and the charge efficiency is improved.
Description
Technical field
The invention belongs to charging control field, particularly relate to a kind of control method of mutually charging for mobile terminal and system.
Background technology
At present; use people in the process of all kinds of mobile terminal (as mobile phone, panel computer) and often can run into the inadequate situation of electricity; for often carrying the user of multi-section mobile terminal; if can be that higher and electricity the is lower mobile terminal of another frequency of utilization charges by the mobile terminal that electricity is higher, then the lower mobile terminal of this electricity can be made to have longer cruising time.In order to realize the object of charging mutually between mobile terminal, prior art is that the direct current by exporting the battery in master mobile terminal carries out boosting process, and exported to from mobile terminal by USB line, then be the charging of its battery after received direct current being carried out to step-down process from mobile terminal.
But, for above-mentioned prior art, owing to carrying out boosting process at the direct current exported the battery in master mobile terminal and all there is electric energy loss when mobile terminal carries out step-down process to received direct current, add USB line and also there is corresponding electric energy loss when transmitting direct current, so at master mobile terminal in the process of charging from mobile terminal, charge efficiency is only about 60% when standing larger electric energy loss, larger waste will be caused like this to the battery electric quantity in master mobile terminal, and charging current is also less, and then extend the charging interval from mobile terminal.
Therefore, as shown in the above, prior art causes charge efficiency low because there is larger electric energy loss in charging process and the problem of charging interval length.
Summary of the invention
The object of the present invention is to provide a kind of control method of mutually charging for mobile terminal, be intended to solve prior art and cause charge efficiency low because there is larger electric energy loss in charging process and the problem of charging interval length.
The present invention is achieved in that a kind of control method of mutually charging for mobile terminal, and it comprises the following steps:
After line interface at master mobile terminal and line interface from mobile terminal connect, judge described master mobile terminal and describedly whether meet electric energy from mobile terminal and fill condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then open charging circuit in described master mobile terminal and described be describedly to charge from the battery of mobile terminal from the charging circuit mobile terminal to make the battery of described master mobile terminal;
Cell voltage in described master mobile terminal and cell output current and described from the cell voltage mobile terminal and battery input current is detected in real time in charging process;
When described cell output current and/or described battery input current are greater than charging current higher limit, adjust the charging circuit in described master mobile terminal and/or the described switching frequency from the charging circuit mobile terminal, to reduce described cell output current and/or described battery input current;
When described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, close charging circuit in described master mobile terminal and describedly stop charging for the described battery from mobile terminal to make the battery of described master mobile terminal from the charging circuit mobile terminal.
Present invention also offers a kind of control system of mutually charging for mobile terminal, it comprises: be built-in with the connecting line of charge control module, main charge switch module, master controller, from charge switch module and from controller; Described main charge switch module and described master controller are all built in master mobile terminal, described from charge switch module with to be describedly all built in from mobile terminal from controller;
After the line interface of described master mobile terminal is connected by described connecting line and the described line interface from mobile terminal, described charge control module communicates from controller with described with described master controller, and judges described master mobile terminal and describedly whether meet electric energy from mobile terminal and fill condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then described charge control module sends charging instruction, the charging circuit in described master mobile terminal opened by described master controller according to the described main charge switch module of described charging instruction control, describedly controlling describedly to open described from the charging circuit mobile terminal from charge switch module from controller according to described charging instruction, is describedly to charge from the battery of mobile terminal to make the battery of described master mobile terminal;
In charging process, described master controller detects cell voltage in described master mobile terminal and cell output current in real time, described detect in real time from controller described from the cell voltage mobile terminal and battery input current; Described charge control module obtains cell voltage described master mobile terminal and cell output current from described master controller, and from described obtain from controller described from the cell voltage mobile terminal and battery input current;
When described charge control module judges described cell output current and/or described battery input current is greater than charging current higher limit, described charge control module sends adjustment instruction, described master controller drives described main charge switch module to adjust the switching frequency of the charging circuit in described master mobile terminal according to described adjustment instruction, and/or described described from the described switching frequency from the charging circuit mobile terminal of charge switch module adjustment according to described adjustment instruction driving from controller, to reduce described cell output current and/or described battery input current;
When described charge control module judges that described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, described charge control module exports charging and terminates instruction, described master controller cuts out the charging circuit in described master mobile terminal according to the described main charge switch module of described charging end instruction control, described from controller according to described charging terminate instruction control described close from charge switch module described from the charging circuit mobile terminal, stop making the battery of described master mobile terminal charging for the described battery from mobile terminal.
Present invention also offers another kind of control system of mutually charging for mobile terminal, it comprises: connecting line, main charge switch module, master controller, from charge switch module and from controller; Described main charge switch module and described master controller are all built in master mobile terminal, described from charge switch module with to be describedly all built in from mobile terminal from controller;
After the line interface of described master mobile terminal is connected by described connecting line and the described line interface from mobile terminal, described master controller is communicated from controller with described by described connecting line, and mutually judges that whether meeting electric energy each other fills condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then described in described main controller controls, main charge switch module opens the charging circuit in described master mobile terminal, describedly controlling described to open described from the charging circuit mobile terminal from charge switch module from controller, is describedly to charge from the battery of mobile terminal to make the battery of described master mobile terminal;
In charging process, described master controller detects cell voltage in described master mobile terminal and cell output current in real time, described detect in real time from controller described from the cell voltage mobile terminal and battery input current;
When described cell output current and/or described battery input current are greater than charging current higher limit, described master controller drives described main charge switch module to adjust the switching frequency of the charging circuit in described master mobile terminal, and/or described described from the described switching frequency from the charging circuit mobile terminal of charge switch module adjustment from controller driving, to reduce described cell output current and/or described battery input current;
When described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, described in described main controller controls, main charge switch module closes the charging circuit in described master mobile terminal, described described described from the charging circuit mobile terminal from the closedown of charge switch module from controller control, stop making the battery of described master mobile terminal charging for the described battery from mobile terminal.
In sum, the present invention by master mobile terminal be connected from mobile terminal after, if master mobile terminal with meet electric energy from mobile terminal and fill condition mutually, the battery of master mobile terminal is then made to be charge from the battery of mobile terminal, and the cell voltage detected in real time in charging process in master mobile terminal and cell output current and from the cell voltage mobile terminal and battery input current; When cell output current and/or battery input current excessive time, reduce the charging current from mobile terminal; When cell output current and/or battery input current are less than charging current lower limit, and master mobile terminal and from the cell voltage difference between mobile terminal be less than charge threshold pressure differential time, make master mobile terminal battery stop for charging from the battery of mobile terminal; Do not need to carry out buck process to direct current in above-mentioned charging process, effectively reduce electric energy loss and shorten the charging interval, improve charge efficiency, thus solve prior art and cause charge efficiency low because there is larger electric energy loss in charging process and charging interval long problem.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the control method of mutually charging for mobile terminal that the embodiment of the present invention provides;
Fig. 2 is the structure chart of a kind of control system of mutually charging for mobile terminal that the embodiment of the present invention provides;
Fig. 3 is the structure chart of the control system that another kind that the embodiment of the present invention provides charges mutually for mobile terminal.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The realization flow of the control method of mutually charging for mobile terminal that Fig. 1 shows that the embodiment of the present invention provides, wherein, mobile terminal can be mobile phone, panel computer or other portable mobile apparatus, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
In step sl, after the line interface at master mobile terminal and the line interface from mobile terminal connect, judge master mobile terminal and whether meet electric energy from mobile terminal to fill condition mutually.
Wherein, judge master mobile terminal and whether meet from mobile terminal the step that electric energy fills condition to be mutually specially:
Carry out communicating with master mobile terminal with from mobile terminal and send to charge respectively and verify instruction;
Judge master mobile terminal and whether verify the corresponding charge arrangement information of instruction feedback according to charging from mobile terminal;
If master mobile terminal and all feed back charge arrangement information from mobile terminal, then judge master mobile terminal and meet electric energy from mobile terminal and fill condition mutually;
If master mobile terminal and/or do not feed back charge arrangement information from mobile terminal, then judge master mobile terminal and do not meet electric energy from mobile terminal and fill condition mutually.
In addition, judge master mobile terminal and whether meet from mobile terminal the step that electric energy fills condition mutually also can be specially:
Control master mobile terminal to communicate with from mobile terminal, and mutually send charging checking instruction;
The corresponding charge arrangement information of charging checking instruction feedback judging master mobile terminal and whether send according to the other side from mobile terminal;
If master mobile terminal with from mobile terminal phase mutual feedback charge arrangement information, then judge master mobile terminal and meet electric energy from mobile terminal and fill condition mutually;
If master mobile terminal and/or do not feed back charge arrangement information to the other side from mobile terminal, then judge master mobile terminal and do not meet electric energy from mobile terminal and fill condition mutually.
Therefore, charge arrangement information is built in and can realizes the mobile terminal that electric energy fills condition mutually, and as judging master mobile terminal and whether meeting from mobile terminal the foundation that electric energy fills condition mutually.
In step s 2, if master mobile terminal with meet electric energy from mobile terminal and fill condition mutually, then open charging circuit in master mobile terminal and be charge from the battery of mobile terminal from the charging circuit mobile terminal to make the battery of master mobile terminal.Wherein, in order to ensure that the battery of master mobile terminal can export electric energy to charge to the battery from mobile terminal, the electricity of the battery of master mobile terminal need be greater than the electricity of the battery from mobile terminal.
In addition, if master mobile terminal with do not meet electric energy from mobile terminal and fill condition mutually, then do not open the charging circuit in master mobile terminal and stop as charging from the battery of mobile terminal to make the battery of master mobile terminal from the charging circuit mobile terminal.
It should be noted that: be not applicable to all mobile terminals because two mobile terminals carry out mutual charging herein, so needed first to judge whether mobile terminal possesses electric energy and fill condition mutually before enforcement electric energy fills mutually, fill mutually to avoid implementing electric energy to the mobile terminal not possessing electric energy and fill mutually condition and cause mobile terminal to be damaged.
In step s3, in charging process, cell voltage in master mobile terminal and cell output current is detected in real time and from the cell voltage mobile terminal and battery input current.
In step s 4 which, when cell output current and/or battery input current are greater than charging current higher limit, the charging circuit in adjustment master mobile terminal and/or from the switching frequency of the charging circuit mobile terminal to reduce cell output current and/or battery input current.
It should be noted that: when charging current (cell output current in master mobile terminal and from the battery input current mobile terminal) excessive (being namely greater than charging current higher limit) herein, in order to prevent causing damage to the battery from mobile terminal, need the size controlling charging current.As long as the cell output current in reduction master mobile terminal and/or from the battery input current mobile terminal, just the object reducing charging current can be reached, therefore adjust to the charging circuit in master mobile terminal and/or from the switching frequency of the charging circuit mobile terminal by above-mentioned steps S4, when charging circuit carries out switch according to a constant switching frequency, the electric current that charging circuit passes through can reduce because charging circuit does not continue to open, thus reaches the object reducing cell output current and/or battery input current.
In step s 5, when cell output current and/or battery input current are less than charging current lower limit, and cell voltage in master mobile terminal be less than from the difference of the cell voltage mobile terminal charge threshold pressure differential time, close charging circuit in master mobile terminal and from the charging circuit mobile terminal to make the battery stopping of master mobile terminal for charge from the battery of mobile terminal.
It should be noted that: for step S5 herein, along with the propelling of charging process, can be more and more higher from the electricity of the battery of mobile terminal, then charging current also can correspondingly reduce, can be more and more higher from the cell voltage of mobile terminal; That is: master mobile terminal cell output current and/or can reduce from the battery input current of mobile terminal, meanwhile, the cell voltage in master mobile terminal and also can be more and more less from the gap between the cell voltage mobile terminal.If cell output current and/or battery input current are less than charging current lower limit, and the cell voltage in master mobile terminal and from the difference between the cell voltage mobile terminal be also less than charge threshold pressure differential time, then show that charging process completes, need to close charging circuit in master mobile terminal and from the charging circuit mobile terminal, stop as charging from the battery of mobile terminal to make the battery of master mobile terminal.
In embodiments of the present invention, charging current higher limit be preset for weighing the current value whether occurring overcurrent in charging process; Charging current lower limit and charging threshold pressure differential be respectively preset for weighing the current value and voltage difference whether charging process terminate.Wherein, charging current higher limit is greater than charging current lower limit.For dissimilar mobile terminal, charging current higher limit, charging current lower limit and charging threshold pressure differential can set according to actual conditions.
The structure of a kind of control system of mutually charging for mobile terminal that Fig. 2 shows that the embodiment of the present invention provides, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
The control system of mutually charging for mobile terminal comprises: be built-in with the connecting line 100 of charge control module 101, main charge switch module 200, master controller 300, from charge switch module 400 and from controller 500; Main charge switch module 200 and master controller 300 are all built in master mobile terminal 1, main charge switch module 200 is for controlling the switch of the charging circuit in master mobile terminal 1, this charging circuit is the circuit between the battery 10 of master mobile terminal 1 and line interface 11, so main charge switch module 200 is arranged between the battery 10 of master mobile terminal 1 and line interface 11.From charge switch module 400 be all built in from mobile terminal 2 from controller 500, from charge switch module 400 for controlling the switch from the charging circuit mobile terminal 2, this charging circuit is from the circuit between the battery 20 and line interface 21 of mobile terminal 2, so be arranged between the battery 20 and line interface 21 of mobile terminal 2 from charge switch module 400.In addition, master controller 300 connects the line interface 11 of master mobile terminal 1, connects the line interface 21 from mobile terminal 2 from controller 500.
Master mobile terminal 1 line interface 11 by connecting line 100 with connect from the line interface 21 of mobile terminal 2 after, charge control module 101 communicates with from controller 500 with master controller 300, and judges master mobile terminal 1 and whether meet electric energy from mobile terminal 2 to fill condition mutually.
Wherein, charge control module 101 judges master mobile terminal 1 and whether meets from mobile terminal 2 process that electric energy fills condition to be mutually specially:
Charge control module 101 verifies instruction with master controller 300 with carrying out communicating from controller 500 and send to charge respectively;
Charge control module 101 judges master controller 300 and whether verifies the corresponding charge arrangement information of instruction feedback according to charging from controller 500;
If master controller 300 and all feed back charge arrangement information from controller 500, then judge master mobile terminal 1 and meet electric energy from mobile terminal 2 and fill condition mutually;
If master controller 300 and/or do not feed back charge arrangement information from controller 500, then judge master mobile terminal 1 and do not meet electric energy from mobile terminal 2 and fill condition mutually.
If master mobile terminal 1 with meet electric energy from mobile terminal 2 and fill condition mutually, then charge control module 101 sends charging instruction, the charging circuit in master mobile terminal 1 opened by master controller 300 according to the main charge switch module 200 of this charging instruction control, controlling to open from the charging circuit mobile terminal 2 from charge switch module 400 from controller 500 according to this charging instruction, is charge from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.Wherein, the electricity of the battery 10 of master mobile terminal 1 is greater than the electricity of the battery 20 from mobile terminal 2.In addition, if master mobile terminal 1 with do not meet electric energy from mobile terminal 2 and fill condition mutually, then master controller 300 does not control main charge switch module 200 and opens charging circuit in master mobile terminal 1, do not control to open from the charging circuit mobile terminal 2 from charge switch module 400 from controller 500, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
And in charging process, the cell voltage in master controller 300 real-time detection master mobile terminal 1 and cell output current, detect from the cell voltage mobile terminal 2 and battery input current in real time from controller 500; Charge control module 101 obtains cell voltage master mobile terminal 1 and cell output current from master controller 300, and obtains from the cell voltage mobile terminal 2 and battery input current from from controller 500.
When charge control module 101 judges cell output current in master mobile terminal 1 and/or is greater than charging current higher limit from the battery input current mobile terminal 2, charge control module 101 sends adjustment instruction, master controller 300 drives main charge switch module 200 to adjust the switching frequency of the charging circuit in master mobile terminal 1 according to this adjustment instruction, and/or indicate driving to adjust the switching frequency from the charging circuit mobile terminal 2, to reduce cell output current and/or battery input current from charge switch module 400 from controller 500 according to this adjustment.
It should be noted that: when charging current (cell output current in master mobile terminal 1 and from the battery input current mobile terminal 2) excessive (being namely greater than charging current higher limit) herein, in order to prevent causing damage to the battery from mobile terminal 2, need the size controlling charging current.As long as the cell output current reduced in master mobile terminal 1 and/or from the battery input current mobile terminal 2, just the object reducing charging current can be reached, therefore by adjusting to the charging circuit in master mobile terminal 1 and/or from the switching frequency of the charging circuit mobile terminal 2, when charging circuit carries out switch according to a constant switching frequency, the electric current that charging circuit passes through can reduce because charging circuit does not continue to open, thus reaches the object reducing cell output current and/or battery input current.
In addition, judge cell output current in master mobile terminal 1 when charge control module 101 and/or be less than charging current lower limit from the battery input current mobile terminal 2, and cell voltage in master mobile terminal 1 be less than from the difference of the cell voltage mobile terminal 2 charge threshold pressure differential time, charge control module 101 exports charging and terminates instruction, master controller 300 terminates to indicate according to this charging and controls main charge switch module 200 and cut out charging circuit in master mobile terminal 1, terminate instruction from controller 500 according to this charging to control to close from the charging circuit mobile terminal 2 from charge switch module 400, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
Along with the propelling of charging process, can be more and more higher from the electricity of the battery 20 of mobile terminal 2, then charging current also can correspondingly reduce, can be more and more higher from the cell voltage of mobile terminal 2; That is: master mobile terminal 1 cell output current and/or can reduce from the battery input current of mobile terminal 2, meanwhile, the cell voltage in master mobile terminal 1 and also can be more and more less from the gap between the cell voltage mobile terminal 2.If the cell output current in master mobile terminal 1 and/or be less than charging current lower limit from the battery input current mobile terminal 2, and the cell voltage in master mobile terminal 1 and from the difference between the cell voltage mobile terminal 2 be also less than charge threshold pressure differential time, then show that charging process completes, need to close charging circuit in master mobile terminal 1 and from the charging circuit mobile terminal 2, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
Concrete, in actual application, above-mentioned connecting line 100 can be built-in with the USB connecting line of charge control module 101, micro-USB connecting line or other can by the line interface 11 of master mobile terminal 1 and the wire rod coupled together from the line interface 21 of mobile terminal 2.Above-mentioned master controller 300 and from controller 500 can be specifically single-chip microcomputer, arm processor or other possess the microcontroller of mathematical logic disposal ability; Above-mentioned main charge switch module 200 and can be specifically the charge switch circuit comprising switching tube and control circuit thereof from charge switch module 400, switching tube herein can be metal-oxide-semiconductor, triode or other possess the semiconductor device of switching characteristic.
The structure of the control system that the another kind that Fig. 3 shows the embodiment of the present invention to be provided charges mutually for mobile terminal, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
The control system of mutually charging for mobile terminal comprises: connecting line 100, main charge switch module 200, master controller 300, from charge switch module 400 and from controller 500.
Main charge switch module 200 and master controller 300 are all built in master mobile terminal 1, main charge switch module 200 is for controlling the switch of the charging circuit in master mobile terminal 1, this charging circuit is the circuit between the battery 10 of master mobile terminal 1 and line interface 11, so main charge switch module 200 is arranged between the battery 10 of master mobile terminal 1 and line interface 11.From charge switch module 400 be all built in from mobile terminal 2 from controller 500, from charge switch module 400 for controlling the switch from the charging circuit mobile terminal 2, this charging circuit is from the circuit between the battery 20 and line interface 21 of mobile terminal 2, so be arranged between the battery 20 and line interface 21 of mobile terminal 2 from charge switch module 400.In addition, master controller 300 connects the line interface 11 of master mobile terminal 1, connects the line interface 21 from mobile terminal 2 from controller 500.
Master mobile terminal 1 line interface 11 by connecting line 100 with connect from the line interface 21 of mobile terminal 2 after, master controller 300 is communicated with from controller 500 by connecting line 100, and whether judgement meets electric energy each other and fill condition mutually mutually.
Wherein, master controller 300 is communicated with from controller 500 by connecting line 100, and mutually judges whether to meet each other the process that electric energy fills condition mutually and be specially:
Master controller 300 communicates with from controller 500, and mutually sends charging checking instruction;
Master controller 300 and judge whether the other side feeds back charge arrangement information separately from controller 500;
If master controller 300 with from controller 500 phase mutual feedback charge arrangement information, then judge master mobile terminal and meet electric energy from mobile terminal and fill condition mutually;
If master controller 300 and/or do not feed back charge arrangement information to the other side from controller 500, then judge master mobile terminal and do not meet electric energy from mobile terminal and fill condition mutually.
If master mobile terminal 1 with meet electric energy from mobile terminal 2 and fill condition mutually, then master controller 300 controls main charge switch module 200 and opens charging circuit in master mobile terminal 1, controlling to open from the charging circuit mobile terminal 2 from charge switch module 400 from controller 500, is charge from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.Wherein, the electricity of the battery 10 of master mobile terminal 1 is greater than the electricity of the battery 20 from mobile terminal 2.In addition, if master mobile terminal 1 with do not meet electric energy from mobile terminal 2 and fill condition mutually, then master controller 300 does not control main charge switch module 200 and opens charging circuit in master mobile terminal 1, do not control to open from the charging circuit mobile terminal 2 from charge switch module 400 from controller 500, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
And in charging process, the cell voltage in master controller 300 real-time detection master mobile terminal 1 and cell output current, detect from the cell voltage mobile terminal 2 and battery input current in real time from controller 500.Cell output current in detected master mobile terminal 1 and charging current higher limit can compare by master controller 300, also detected can be compared from the battery input current mobile terminal 2 and charging current higher limit from controller 500; Simultaneously, cell output current in detected master mobile terminal 1 and charging current lower limit also can compare by master controller 300, also detected can be compared from the battery input current mobile terminal 2 and charging current lower limit from controller 500.Cell output current in master mobile terminal 1 and/or when being less than charging current lower limit from the battery input current mobile terminal 2, detected master controller 300 can be sent to from the cell voltage mobile terminal 2 by current from controller 500, calculate cell voltage in master mobile terminal 1 by master controller 300 and from the voltage difference between the cell voltage mobile terminal 2, and judge whether this voltage difference is less than charging threshold pressure differential; Or the cell voltage in current detected master mobile terminal 1 can send to from controller 500 by master controller 300, by the cell voltage calculated from controller 500 in master mobile terminal 1 and from the voltage difference between the cell voltage mobile terminal 2, and judge whether this voltage difference is less than charging threshold pressure differential.
When the cell output current in master mobile terminal 1 and/or when being greater than charging current higher limit from the battery input current mobile terminal 2, master controller 300 drives main charge switch module 200 to adjust the switching frequency of the charging circuit in master mobile terminal 1, and/or to drive from controller 500 and adjust switching frequency from the charging circuit mobile terminal 2 from charge switch module 400, to reduce cell output current in master mobile terminal 1 and/or from the battery input current mobile terminal 2.
When charging current (cell output current in master mobile terminal 1 and from the battery input current mobile terminal 2) excessive (being namely greater than charging current higher limit), in order to prevent causing damage to the battery from mobile terminal 2, need the size controlling charging current.As long as the cell output current reduced in master mobile terminal 1 and/or from the battery input current mobile terminal 2, just the object reducing charging current can be reached, therefore by adjusting to the charging circuit in master mobile terminal 1 and/or from the switching frequency of the charging circuit mobile terminal 2, when charging circuit carries out switch according to a constant switching frequency, the electric current that charging circuit passes through can reduce because charging circuit does not continue to open, thus reaches the object reducing cell output current and/or battery input current.
Charging current lower limit is less than when the cell output current in master mobile terminal 1 and/or from the battery input current mobile terminal 2, and cell voltage in master mobile terminal 1 be less than from the difference of the cell voltage mobile terminal 2 charge threshold pressure differential time, master controller 300 controls main charge switch module 200 and cuts out charging circuit in master mobile terminal 1, control to close from the charging circuit mobile terminal 2 from charge switch module 400 from controller 500, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
Along with the propelling of charging process, can be more and more higher from the electricity of the battery 20 of mobile terminal 2, then charging current also can correspondingly reduce, can be more and more higher from the cell voltage of mobile terminal 2; That is: master mobile terminal 1 cell output current and/or can reduce from the battery input current of mobile terminal 2, meanwhile, the cell voltage in master mobile terminal 1 and also can be more and more less from the gap between the cell voltage mobile terminal 2.If the cell output current in master mobile terminal 1 and/or be less than charging current lower limit from the battery input current mobile terminal 2, and the cell voltage in master mobile terminal 1 and from the difference between the cell voltage mobile terminal 2 be also less than charge threshold pressure differential time, then show that charging process completes, need to close charging circuit in master mobile terminal 1 and from the charging circuit mobile terminal 2, stop as charging from the battery 20 of mobile terminal 2 to make the battery 10 of master mobile terminal 1.
Concrete, in actual application, above-mentioned connecting line 100 can be USB connecting line, micro-USB connecting line or other can by the line interface 11 of master mobile terminal 1 and the wire rod coupled together from the line interface 21 of mobile terminal 2.Above-mentioned master controller 300 and be respectively central processing unit master mobile terminal 1 from controller 500 and from the central processing unit mobile terminal 2, the central processing unit of mobile terminal can be made full use of like this to save hardware cost.Above-mentioned main charge switch module 200 and can be the charge switch circuit comprising switching tube and control circuit thereof from charge switch module 400, switching tube herein can be metal-oxide-semiconductor, triode or other possess the semiconductor device of switching characteristic.
In sum, the embodiment of the present invention by master mobile terminal 1 be connected from mobile terminal 2 after, if master mobile terminal 1 with meet electric energy from mobile terminal 2 and fill condition mutually, the battery 10 of master mobile terminal 1 is then made to be charge from the battery 20 of mobile terminal 2, and the cell voltage detected in real time in charging process in master mobile terminal 1 and cell output current and from the cell voltage mobile terminal 2 and battery input current; When cell output current and/or battery input current excessive time, reduce the charging current from mobile terminal 2; When cell output current and/or battery input current are less than charging current lower limit, and master mobile terminal 1 and from the cell voltage difference between mobile terminal 2 be less than charge threshold pressure differential time, make master mobile terminal 1 battery 10 stop for charging from the battery 20 of mobile terminal 2; Do not need to carry out buck process to direct current in above-mentioned charging process, effectively reduce electric energy loss and shorten the charging interval, improve charge efficiency, thus solve prior art and cause charge efficiency low because there is larger electric energy loss in charging process and charging interval long problem.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. for the control method that mobile terminal charges mutually, it is characterized in that, described control method comprises the following steps:
After line interface at master mobile terminal and line interface from mobile terminal connect, judge described master mobile terminal and describedly whether meet electric energy from mobile terminal and fill condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then open charging circuit in described master mobile terminal and described be describedly to charge from the battery of mobile terminal from the charging circuit mobile terminal to make the battery of described master mobile terminal;
Cell voltage in described master mobile terminal and cell output current and described from the cell voltage mobile terminal and battery input current is detected in real time in charging process;
When described cell output current and/or described battery input current are greater than charging current higher limit, adjust the charging circuit in described master mobile terminal and/or the described switching frequency from the charging circuit mobile terminal, to reduce described cell output current and/or described battery input current;
When described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, close charging circuit in described master mobile terminal and describedly stop charging for the described battery from mobile terminal to make the battery of described master mobile terminal from the charging circuit mobile terminal.
2. control method as claimed in claim 1, is characterized in that, describedly judges described master mobile terminal and describedly whether meets from mobile terminal the step that electric energy fills condition mutually and be specially:
Carry out communicating with master mobile terminal with from mobile terminal and send to charge respectively and verify instruction;
Judge master mobile terminal and whether verify the corresponding charge arrangement information of instruction feedback according to charging from mobile terminal;
If master mobile terminal and all feed back charge arrangement information from mobile terminal, then judge master mobile terminal and meet electric energy from mobile terminal and fill condition mutually;
If master mobile terminal and/or do not feed back charge arrangement information from mobile terminal, then judge master mobile terminal and do not meet electric energy from mobile terminal and fill condition mutually.
3. control method as claimed in claim 1, is characterized in that, describedly judges described master mobile terminal and describedly whether meets from mobile terminal the step that electric energy fills condition mutually and be specially:
Control master mobile terminal to communicate with from mobile terminal, and mutually send charging checking instruction;
The corresponding charge arrangement information of charging checking instruction feedback judging master mobile terminal and whether send according to the other side from mobile terminal;
If master mobile terminal with from mobile terminal phase mutual feedback charge arrangement information, then judge master mobile terminal and meet electric energy from mobile terminal and fill condition mutually;
If master mobile terminal and/or do not feed back charge arrangement information to the other side from mobile terminal, then judge master mobile terminal and do not meet electric energy from mobile terminal and fill condition mutually.
4. for the control system that mobile terminal charges mutually, it is characterized in that, described control system comprises: be built-in with the connecting line of charge control module, main charge switch module, master controller, from charge switch module and from controller; Described main charge switch module and described master controller are all built in master mobile terminal, described from charge switch module with to be describedly all built in from mobile terminal from controller;
After the line interface of described master mobile terminal is connected by described connecting line and the described line interface from mobile terminal, described charge control module communicates from controller with described with described master controller, and judges described master mobile terminal and describedly whether meet electric energy from mobile terminal and fill condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then described charge control module sends charging instruction, the charging circuit in described master mobile terminal opened by described master controller according to the described main charge switch module of described charging instruction control, describedly controlling describedly to open described from the charging circuit mobile terminal from charge switch module from controller according to described charging instruction, is describedly to charge from the battery of mobile terminal to make the battery of described master mobile terminal;
In charging process, described master controller detects cell voltage in described master mobile terminal and cell output current in real time, described detect in real time from controller described from the cell voltage mobile terminal and battery input current; Described charge control module obtains cell voltage described master mobile terminal and cell output current from described master controller, and from described obtain from controller described from the cell voltage mobile terminal and battery input current;
When described charge control module judges described cell output current and/or described battery input current is greater than charging current higher limit, described charge control module sends adjustment instruction, described master controller drives described main charge switch module to adjust the switching frequency of the charging circuit in described master mobile terminal according to described adjustment instruction, and/or described described from the described switching frequency from the charging circuit mobile terminal of charge switch module adjustment according to described adjustment instruction driving from controller, to reduce described cell output current and/or described battery input current;
When described charge control module judges that described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, described charge control module exports charging and terminates instruction, described master controller cuts out the charging circuit in described master mobile terminal according to the described main charge switch module of described charging end instruction control, described from controller according to described charging terminate instruction control described close from charge switch module described from the charging circuit mobile terminal, stop making the battery of described master mobile terminal charging for the described battery from mobile terminal.
5. control system as claimed in claim 4, is characterized in that, described charge control module judges described master mobile terminal and describedly whether meets from mobile terminal the process that electric energy fills condition mutually and be specially:
Described charge control module respectively with described master controller with described carry out communicating from controller and send to charge verify instruction;
Described charge control module judge described master controller and described from controller whether according to the corresponding charge arrangement information of described charging checking instruction feedback;
If described master controller and describedly all feed back charge arrangement information from controller, then judge described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually;
If described master controller and/or describedly do not feed back charge arrangement information from controller, then judge described master mobile terminal and describedly do not meet electric energy from mobile terminal and fill condition mutually.
6. for the control system that mobile terminal charges mutually, it is characterized in that, described control system comprises: connecting line, main charge switch module, master controller, from charge switch module and from controller; Described main charge switch module and described master controller are all built in master mobile terminal, described from charge switch module with to be describedly all built in from mobile terminal from controller;
After the line interface of described master mobile terminal is connected by described connecting line and the described line interface from mobile terminal, described master controller is communicated from controller with described by described connecting line, and mutually judges that whether meeting electric energy each other fills condition mutually;
If described master mobile terminal and describedly meet electric energy from mobile terminal and fill condition mutually, then described in described main controller controls, main charge switch module opens the charging circuit in described master mobile terminal, describedly controlling described to open described from the charging circuit mobile terminal from charge switch module from controller, is describedly to charge from the battery of mobile terminal to make the battery of described master mobile terminal;
In charging process, described master controller detects cell voltage in described master mobile terminal and cell output current in real time, described detect in real time from controller described from the cell voltage mobile terminal and battery input current;
When described cell output current and/or described battery input current are greater than charging current higher limit, described master controller drives described main charge switch module to adjust the switching frequency of the charging circuit in described master mobile terminal, and/or described described from the described switching frequency from the charging circuit mobile terminal of charge switch module adjustment from controller driving, to reduce described cell output current and/or described battery input current;
When described cell output current and/or described battery input current are less than charging current lower limit, and cell voltage in described master mobile terminal and the described difference from the cell voltage mobile terminal are less than when charging threshold pressure differential, described in described main controller controls, main charge switch module closes the charging circuit in described master mobile terminal, described described described from the charging circuit mobile terminal from the closedown of charge switch module from controller control, stop making the battery of described master mobile terminal charging for the described battery from mobile terminal.
7. control system as claimed in claim 6, it is characterized in that, described master controller is communicated from controller with described by described connecting line, and whether judgement meets the process that electric energy fills condition mutually each other and be specially mutually:
Described master controller communicates from controller with described, and mutually sends charging checking instruction;
Described master controller and describedly judge whether the other side feeds back charge arrangement information separately from controller;
If described master controller from controller phase mutual feedback charge arrangement information with described, then judge described master mobile terminal and describedly meets electric energy from mobile terminal and fill condition mutually;
If described master controller and/or describedly do not feed back charge arrangement information to the other side from controller, then judge described master mobile terminal and describedly do not meet electric energy from mobile terminal and fill condition mutually.
8. control system as claimed in claims 6 or 7, is characterized in that, described master controller and be describedly respectively central processing unit described master mobile terminal and described from the central processing unit mobile terminal from controller.
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| CN201510426601.3A CN104953678B (en) | 2015-07-20 | 2015-07-20 | A kind of control method and system mutually to be charged for mobile terminal |
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| CN201510426601.3A CN104953678B (en) | 2015-07-20 | 2015-07-20 | A kind of control method and system mutually to be charged for mobile terminal |
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| CN104953678B (en) | 2018-01-16 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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