CN106849244B - A kind of voltage control method of charging interface, charger and mobile terminal - Google Patents

A kind of voltage control method of charging interface, charger and mobile terminal Download PDF

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Publication number
CN106849244B
CN106849244B CN201710113059.5A CN201710113059A CN106849244B CN 106849244 B CN106849244 B CN 106849244B CN 201710113059 A CN201710113059 A CN 201710113059A CN 106849244 B CN106849244 B CN 106849244B
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current value
current
charging interface
charger
value
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CN106849244A (en
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魏华兵
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
Vivo Mobile Communication Co Ltd Beijing Branch
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/0072Regulation of charging or discharging current or voltage using semiconductor devices only
    • H02J7/0088Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to non-electric parameters
    • H02J7/0091Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to non-electric parameters in response to temperature of the battery

Abstract

The invention discloses a kind of voltage control method of charging interface, charger and mobile terminal, methods to include:Obtain the current value of charging interface output;Wherein, current value is:Mobile terminal charging interface draw after detecting that charging interface temperature is more than predetermined threshold value carry when, charging interface is through drawing the current value for being loaded onto default pulling load current and exporting after continuing preset time;If current value meets preset condition, a current-order is generated;According to the current-order of generation, the output voltage of charging interface is turned off.The current value that the charger of the present invention is exported by obtaining charging interface, current-order is generated to realize the shutdown of charger output voltage based on multiple current values, the program is judged by charger and controls the shutdown of output voltage, the safe and applicable range for not exceeding charger avoids the security hidden trouble caused by charger overloads for a long time.In addition, the program needs not rely on the charging system of two-way communication, it is suitable for various charging systems.

Description

A kind of voltage control method of charging interface, charger and mobile terminal
Technical field
The present invention relates to intelligent terminal design field more particularly to a kind of voltage control method of charging interface, chargers And mobile terminal.
Background technology
With the development of the mobile terminals such as mobile phone and universal, it is related to having hair when the case that mobile terminal port is burnt out in recent years It is raw.The data port of mobile terminal is multiplexed same port with charging interface, and mobile terminal is in routine use since interface can The conducting mediums such as impurity or steam can be mixed into, electric power network (Vbus) (shell over the ground is formed so as to cause in interface internal Or interface) micro-short circuit can form the high current of power supply over the ground between charger and interface when user is inserted into charger and return Road causes interface temperature anomaly to increase, the phenomenon that causing interface fusion crust or burn.In current existing charging technique, With charging interface there are mainly two types of safety-related protection techniques:One is in current low pressure quick charging system, it is based on The intercommunication system of charger and mobile phone terminal structure, increases thermistor (NTC resistance) monitoring client at mobile phone charging port Temperature at mouthful is sent to charger end by mobile phone terminal processor and is ordered when temperature is more than the threshold value of setting, and control is filled Electric appliance end turns off voltage output, realizes the safeguard protection to interface.The program has in low pressure quick charging system extensively at present It uses, due to needing to carry out charger and hand by the D+/D- data lines of Micro USB ports or the channels CC of Type C interface The communication of generator terminal, to realize the active shutdown to charger voltage, therefore the program had for communication interface it is abnormal or not The scene of energy normal communication cannot thoroughly evade the risk.Further, since the program is needed based on intercommunication system ability in fact It is existing, standard charger (charger end D+ and D- data port acquiescence are shorted together) common at present and high-voltage high-speed are filled Electric system (simplex system) cannot all play a protective role.
Another kind is also in mobile phone terminal by the temperature at NTC resistance monitoring ports, logical in mobile phone side when temperature anomaly Software control metal-oxide-semiconductor is crossed, the VBUS networks of charger output are pulled down to ground in mobile phone terminal, VBUS network shorted to earths is made to generate High current, the overcurrent protection mechanism at triggering charger end make charger shutdown output, and enter hiccup state;Work as interface After temperature restores normal, mobile phone terminal controls mos pipes and disconnects the short-circuit conditions of VBUS over the ground so that charger releases OCP, and (overcurrent is protected Shield) state and restore normal output.Although overcurrent protection mechanism of the program based on charger realizes the safeguard protection to interface, It needs not rely on data channel and realizes communication, but the program can not distinguish charger, for no overcurrent protection function Charger one vertical pulling maximum current of meeting, makes such charger have been at overload, may cause the overheat of such charger Or the security risks such as burn.
Therefore, communication interface and charger how not to be differentiated between, voltage control is carried out to the charging interface of mobile terminal, become Urgent problem to be solved.
Invention content
An embodiment of the present invention provides a kind of voltage control method of charging interface, charger and mobile terminals, to solve The guard method of charging interface is only applicable to intercommunication system in the prior art, or is only applicable to protection mechanism charger The problem of system, the poor universality of charging interface guard method.
In a first aspect, an embodiment of the present invention provides a kind of voltage control method of charging interface, it is applied to a charger, Including:
Obtain the current value of charging interface output;Wherein, current value is:Mobile terminal is detecting that charging interface temperature is super It crosses and charging interface draw after predetermined threshold value when carrying, charging interface is after drawing and being loaded onto default pulling load current and continue preset time The current value of output;
If current value meets preset condition, a current-order is generated;
According to the current-order of generation, the output voltage of charging interface is turned off.
Second aspect, the embodiment of the present invention additionally provide a kind of charger, including:
Acquisition module, the current value for obtaining charging interface output;Wherein, current value is:Mobile terminal is detecting When charging interface temperature to charging interface after predetermined threshold value more than carrying out drawing load, charging interface is loaded onto default pulling load current simultaneously through drawing Continue the current value exported after preset time;
Generation module when the current value for being got when acquisition module meets preset condition, generates a current-order;
Processing module, the current-order for being generated according to generation module, turns off the output voltage of charging interface.
The third aspect, the embodiment of the present invention additionally provide a kind of mobile terminal, including charger as described above.
In this way, multiple current values that the charger of the embodiment of the present invention is exported by obtaining charging interface, are based on current value Current-order is generated to realize that the shutdown of charger output voltage, the program are judged by charger and control the pass of output voltage It is disconnected, the safe and applicable range of charger is not exceeded, the security hidden trouble caused by charger overloads for a long time is avoided.In addition, The program needs not rely on the charging system of two-way communication, is suitable for various charging systems, has higher versatility.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 shows the flow charts of the voltage control method of the charging interface of first embodiment of the invention;
Fig. 2 indicates the voltage control method flow chart of the charging interface of second embodiment of the invention;
Fig. 3 indicates that mobile terminal draws load schematic diagram to the electric current of charging interface in second embodiment of the invention;
Fig. 4 indicates the structural schematic diagram one of the charger of third embodiment of the invention;
Fig. 5 indicates the structural schematic diagram two of the charger of third embodiment of the invention;
Fig. 6 indicates the mobile terminal block diagram of fifth embodiment of the invention;
Fig. 7 indicates the mobile terminal block diagram of sixth embodiment of the invention.
Specific implementation mode
Exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here It is limited.It is to be able to be best understood from the present invention on the contrary, providing these embodiments, and can be by the scope of the present invention Completely it is communicated to those skilled in the art.
First embodiment
As shown in Figure 1, the embodiment provides a kind of voltage control method of charging interface, it is applied to a charging Device, this method specifically include:
Step 101:Obtain the current value of charging interface output.
Wherein, current value is:Mobile terminal detect charging interface temperature be more than predetermined threshold value after to charging interface into Row is drawn when carrying, and charging interface is through drawing the current value for being loaded onto default pulling load current and exporting after continuing preset time.Further, this In the current value that exports of described acquisitions charging interface be specially:Obtain multiple current values of charging interface output, multiple electric currents Value can once obtain the current value that multiple variations are got in the period, can also be got within the once acquisition period Multiple regular current values.
Step 102:If current value meets preset condition, a current-order is generated.
Wherein, if multiple current values are satisfied by preset condition, current-order is generated, current-order includes multiple instruction ratios Spy, each indication bit correspond to the state that a kind of current value meets preset condition.Further, preset condition may be set to obtain To current value be continued above or be less than predetermined current threshold, whether comprehensive multiple current values meet the state of preset condition, can The situation of change of the current value got (forms high current when situation of change and the charging interface of the current value got are abnormal Circuit) when output current situation of change when matching, generate a current-order.
Step 103:According to the current-order of generation, the output voltage of charging interface is turned off.
After charger detects the current-order, the output voltage of charging interface is turned off, that is, stops supplying mobile terminal Electricity prevents mobile terminal from being burnt out because of charging interface abnormal formation big current loop.
Since the embodiment of the present invention is obtained by charger and whether extremely to detect charging interface, and determining that charging interface is different Power supply is actively cut off when often, to avoid the problem that burning out charging interface or charger because forming big current loop.This Outside, in the voltage control method of the charging interface, charger is carried out according to the output voltage of the charging interface got Control, there is no need to the realization of the channels cc of D+/D- signal paths or Type C by Micro USB interfaces, in realization not The charging system for needing dependence two-way communication can be adapted for common standard charging system (D+/D- acquiescences are shorted together) With the fast charging system of high pressure, there is higher versatility.
Second embodiment
First embodiment above has carried out simple introduction to the voltage control method of charging interface of the present invention, below this reality It will be described further in conjunction with attached drawing and concrete application scene by applying example.
As shown in Fig. 2, the voltage control method of the charging interface of the embodiment of the present invention specifically includes following steps:
Step 201:Obtain at least three current values of charging interface output.
Wherein, above three current value be mobile terminal detect charging interface temperature be more than predetermined threshold value after to charging Interface carry out it is default draw when carrying, charging interface is through drawing the current value for being loaded onto default pulling load current and exporting after continuing preset time. Here obtaining at least three current values is worth being at least to charging interface draw twice carrying, i.e., current value at least occurs to become twice Change.Mobile terminal carries out output electric current measure in the output end of charger, when by NTC resistance detections to port temperature more than setting When determining threshold value, using the predefined VBUS electric currents progress drawn and carry strategy to charging interface output end on the VBUS of mobile terminal It draws and carries, charger detects the current value of charging interface output.Wherein, mobile terminal draws the strategy for carrying VBUS electric currents to be pressed for intermittence Drawing load is carried out to VBUS electric currents according to default pulling load current, i.e., VBUS electric currents are carried out according to default pulling load current repeatedly drawing load, and It draws twice and is separated with preset interval time between carrying.
Further, in order to ensure that charger is used safely within the scope of power requirements, for presetting setting for pulling load current It sets the actual output current for needing to ensure charger and is less than or equal to output-current rating.The setting of i.e. default pulling load current is based on filling The rated output power of electric appliance.Specifically, the present VBUS pull-up of mobile terminal carries a low current, and detects charging IC input terminals Voltage;The electric current that VBUS pull-up carries is improved step by step, is both needed to the voltage of detection charging IC input terminals after raising electric current gear every time, And compared with the charging preset voltage thresholds of IC, if less than the electricity for continuing raising VBUS pull-up loads if voltage threshold Stream, if reaching preset voltage threshold, it is determined that charger draws when carrying current gear current value output power without surplus, It cannot be further continued for improving the input current value of VBUS, at this moment can determine that the output-current rating upper limit value institute that the charger is supported is right The pulling load current answered.
Preferably, the present embodiment is illustrated by taking four current values as an example, obtains four current values of charging interface output, Specific acquisition process is as follows:Charging interface is obtained after being loaded onto the first default pulling load current value through drawing and continues the first preset time First current value of interior output;Obtain the second current value that charging interface exports after stopping drawing load and continuing for the first interval time; Charging interface is obtained after being loaded onto the second default pulling load current value through drawing and continues the third electric current exported in the second preset time Value;Obtain the 4th current value that charging interface exports after stopping drawing load and continuing for the second interval time.
As shown in figure 3, mobile terminal after detecting that charging interface temperature is more than predetermined threshold value, carries the drawing of charging interface Strategy is:By charging, IC carries fixed current value (such as 50mA) and duration T 0 (such as 150ms) in VBUS pull-up;Continuing After drawing the electric current 500mA carried on VBUS and continuing 150ms, stop pulling load current, and duration T 1 (such as 50ms);Stopping After pulling load current, mobile terminal is drawn again carries VBUS current values (such as 500mA) and duration T 2 (such as 100ms), stops later Pulling load current.The current value of front and back pulling load current twice is identical in the present embodiment, but it is front and back multiple to draw load strategy also to may be configured as The current value of pulling load current is different, but draws the threshold value of the no more than maximum pulling load current of the current value carried every time.
Step 202:Detect whether at least three current values got meet preset relation with corresponding current threshold.
Corresponding to above-mentioned steps 201, after getting at least three current values, need to detect at least three electricity got Whether flow valuve meets preset relation with corresponding current threshold, and the corresponding current threshold of different current values is different here, that is, charges Interface corresponding current threshold during drawing load is different from corresponding current threshold value in drawing load interval, can more intuitively judge in this way The situation of change for carrying charging interface output voltage in interval is drawn during carrying and draws, to more accurately whether judge charging interface It is protected, reduces the False Rate of protection mechanism.Illustrated for obtaining 4 current values below.
Detect first current value, the second current value, third current value and the 4th current value that get with it is corresponding Whether current threshold meets preset relation;Specially:Detect whether the first current value got is higher than the first pre-set current value And continue the first preset time;Wherein, the first pre-set current value is less than the first default pulling load current value;Detect second got Whether current value is less than the first pre-set current value and continued for the first interval time;Detect whether the third current value got is higher than Second pre-set current value simultaneously continues the second preset time;Wherein, the second pre-set current value is less than the second default pulling load current value;Inspection Survey whether the 4th current value got is less than the second pre-set current value and continued for the second interval time.
For example, the first pre-set current value is set as the 65% of the first default pulling load current value (500mA), i.e., first is default Current value is 0.65*500mA=325mA, starts timing after detecting that the first current value is higher than 325mA, and detects the first electricity Flow valuve is higher than the duration of 325mA.And it further detects and stops drawing the second electricity got after load for the first time in mobile terminal Whether flow valuve is less than the first pre-set current value and continued for the first interval time.Similarly, detection draws the when of carrying to get at second Third current value whether higher than the second pre-set current value (equal with the first pre-set current value in the embodiment, be 325mA), and It detects and starts timing after being higher than 325mA, and detect the duration that third current value is higher than 325mA.And it further detects Mobile terminal stops second and draws the 4th current value got after load whether to be less than the second pre-set current value and continue between second Every the time.Wherein, when detection stops whether drawing the current value got after load less than certain threshold value, it is pre- which may be configured as first If current value or the second pre-set current value, it is 0 that may further be provided, i.e., detecting the current value got after stopping drawing and carrying is No is 0.
Step 203:If detecting, at least three current values are satisfied by preset relation with corresponding current threshold, generate one Current-order.
If detecting the first current value, the second current value, third current value and the 4th current value and corresponding current threshold It is satisfied by preset relation, then generates a current-order.Specifically, if the first current value is higher than the first pre-set current value and continues the One preset time, the second current value less than the first pre-set current value and continue the first interval time, third current value higher than second Pre-set current value simultaneously continues the second preset time, the 4th current value less than the second pre-set current value and continued for the second interval time, Then generate a current-order.
Taking the above example as an example, if draw for the first time carry the first current value for getting in the process higher than 325mA and it is lasting when Between reach 150ms, then be labeled as 1, otherwise be labeled as 0.If stopping that the during of carrying is drawn to get after first time draws load The second current value be 0 and the duration reach 50ms, then be labeled as 0, otherwise be labeled as 1.If second is drawn to carry and be obtained in the process The third current value got is higher than 325mA and the duration reaches 100ms, then is labeled as 1, is otherwise labeled as 0.If second is drawn The 4th current value for stopping getting during drawing load after load is 0 and the duration reached for the second interval time (such as 10ms), then it is labeled as 0, is otherwise labeled as 1.In this way when parse above-mentioned first current value, the second current value, third current value and After 4th current value, obtains generating current-order when the marker bit labeled as 1010, otherwise do not generate current-order.
Step 204:According to the current-order of generation, the output voltage of charging interface is turned off.
After having detected that current-order generates, the requirement of the current-order is responded, by the defeated of the charging interface of charger Go out voltage shutdown, to protect the safety of the charging interface for the mobile terminal being connect with charger.When user plugs charger again When input terminal, charger, which re-powers, can restore normally to export.
It is worth noting that the instruction cited by the present embodiment is 1010, but do not limit, is examined using other instructions according to this Survey mode also can, and current values and time numerical value cited in above-mentioned example are illustrative only, and consider practical application When also may be set to other parameters numerical value.
It is since the voltage control method of the charging interface of the embodiment of the present invention is obtained by charger and detects charging interface No exception, and power supply is actively cut off when determining charging interface exception, to avoid burning out because forming big current loop The problem of charging interface or charger.It is by charging interface, especially in addition, in the voltage control method of the charging interface It is that the VBUS of charging interface realizes the current-order interaction and control of mobile terminal and charger, there is no need to pass through Micro The D+/D- signal paths of USB interface or the channels cc of Type C are realized, the Charging of two-way communication is needed not rely in realization System can be adapted for common standard charging system (D+/D- acquiescences are shorted together) and the fast charging system of high pressure, have higher Versatility.
3rd embodiment
First embodiment above and second embodiment describe the voltage control method of the charging interface of the present invention respectively, under Face the present embodiment will be described further its corresponding charger in conjunction with attached drawing.
As shown in figure 4, the charger 400 of the embodiment of the present invention, can realize and be obtained in first embodiment and second embodiment The current value of charging interface output;If current value meets preset condition, a current-order is generated;Referred to according to the electric current of generation It enables, turns off the details of the output voltage method of charging interface, and reach identical effect, wherein current value is:Mobile terminal exists When detecting charging interface temperature more than carrying out drawing load to charging interface after predetermined threshold value, charging interface is loaded onto default drawing through drawing and carries Electric current simultaneously continues the current value exported after preset time.The charger specifically includes following functions module:
Acquisition module 410, the current value for obtaining charging interface output;Wherein, current value is:Mobile terminal is detecting When carrying out drawing load to charging interface after being more than predetermined threshold value to charging interface temperature, charging interface is loaded onto default pulling load current through drawing And continue the current value exported after preset time;
Generation module 420 when the current value for being got when acquisition module 410 meets preset condition, generates an electric current Instruction;
Processing module 430, the current-order for being generated according to generation module 420, turns off the output voltage of charging interface.
Wherein, as shown in figure 5, acquisition module 410 includes:
Acquisition submodule 411, at least three current values for periodically acquiring charging interface output.
Wherein, generation module 420 includes:
Detection sub-module 421, for detecting whether at least three current values got meet with corresponding current threshold Preset relation;
Submodule 422 is generated, at least three current values and corresponding current threshold are detected for working as detection sub-module 421 When being satisfied by preset relation, a current-order is generated.
Wherein, acquisition module 410 includes:
First acquisition unit 4101, for obtaining charging interface after drawing and being loaded onto the first default pulling load current value and lasting The first current value exported in first preset time;
Second acquisition unit 4102 carries and charging interface exports after continuing for the first interval time for obtaining to stop drawing Two current values;
Third acquiring unit 4103, for obtaining charging interface after drawing and being loaded onto the second default pulling load current value and lasting The third current value exported in second preset time;
4th acquiring unit 4104 carries and charging interface exports after continuing for the second interval time for obtaining to stop drawing Four current values.
Wherein, generation module 420 includes:
Detection unit 4201, for detecting the first current value got, the second current value, third current value and respectively Whether four current values expire preset relation with corresponding current threshold;
Generation unit 4202 detects the first current value, the second current value, third current value for working as detection unit 4201 It is satisfied by preset relation with corresponding current threshold with the 4th current value, then generates a current-order.
Wherein, detection unit 4201 includes:
First detection sub-unit 42011, for detecting whether the first current value got is higher than the first pre-set current value And continue the first preset time;Wherein, the first pre-set current value is less than the first default pulling load current value;
Second detection sub-unit 42012, for detecting whether the second current value got is less than the first pre-set current value And continued for the first interval time;
Third detection sub-unit 42013, for detecting whether the third current value got is higher than the second pre-set current value And continue the second preset time;Wherein, the second pre-set current value is less than the second default pulling load current value;
4th detection sub-unit 42014, for detecting whether the 4th current value got is less than the second pre-set current value And continued for the second interval time.
Wherein, generation unit 4202 includes:
Generate subelement 42021, for when the first current value higher than the first pre-set current value and continue the first preset time, Second current value is less than the first pre-set current value and continues the first interval time, third current value simultaneously higher than the second pre-set current value Continue the second preset time, the 4th current value less than the second pre-set current value and when continuing for the second interval time, generates an electric current Instruction.
Another aspect according to the present embodiment additionally provides a kind of mobile terminal, including charger as described above.
It is worth noting that the charger and mobile terminal of the embodiment of the present invention are controlled with the voltage of above-mentioned charging interface Method is corresponding, and the embodiment of the above method and the technique effect of realization are suitable for the embodiment of the charger.Wherein, The current value that the charger of the present invention is exported by obtaining charging interface generates current-order based on multiple current values and is filled with realizing The shutdown of electric appliance output voltage, the program are judged and are controlled by charger the shutdown of output voltage, do not exceed charger Safe and applicable range avoids the security hidden trouble caused by charger overloads for a long time.In addition, the program need not rely on it is two-way The charging system of communication is suitable for various charging systems.
Fourth embodiment
Fig. 6 is the block diagram of the mobile terminal 600 of another embodiment of the present invention, and mobile terminal as shown in FIG. 6 includes:Extremely A few processor 601, memory 602, charger 603 and user interface 604.Various components in mobile terminal 600 pass through Bus system 605 is coupled.It is understood that bus system 605 is for realizing the connection communication between these components.Total linear system System 605 further includes power bus, controlling bus and status signal bus in addition in addition to including data/address bus.But for clear theory For the sake of bright, various buses are all designated as bus system 605 in figure 6.
Wherein, user interface 604 may include display either pointing device (such as touch-sensitive plate or touch screen etc..
It is appreciated that the memory 602 in the embodiment of the present invention can be volatile memory or nonvolatile memory, Both or may include volatile and non-volatile memory.Wherein, nonvolatile memory can be read-only memory (Read- Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static RAM (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct Rambus RAM, DRRAM).The memory 602 of system and method described herein be intended to including but not limited to these and it is arbitrary its It is suitble to the memory of type.
In some embodiments, memory 602 stores following element, executable modules or data structures, or Their subset of person or their superset:Operating system 6021 and application program 6022.
Wherein, operating system 6021, including various system programs, such as ccf layer, core library layer, driving layer etc., are used for Realize various basic businesses and the hardware based task of processing.Application program 6022, including various application programs, such as media Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention The program of method may be embodied in application program 6022.
In an embodiment of the present invention, specifically can answer by the program or instruction of calling memory 602 to store With the program or instruction stored in program 6022.Wherein, processor 601 is used to detect that charging interface temperature is more than default threshold Charging interface draw after value when carrying, charging interface is through drawing the electricity for being loaded onto default pulling load current and exporting after continuing preset time Flow valuve.Charger 603 includes a microprocessor, is mainly used for:Obtain the current value of charging interface output;If current value meets pre- If condition, then a current-order is generated;According to the current-order of generation, the output voltage of charging interface is turned off.
The method that the embodiments of the present invention disclose can be applied in processor 601, or be realized by processor 601. Processor 601 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each Step can be completed by the integrated logic circuit of the hardware in processor 601 or the instruction of software form.Above-mentioned processing Device 601 can be general processor, digital signal processor (Digital Signal Processor, DSP), special integrated electricity Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic, Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general Processor can be microprocessor or the processor can also be any conventional processor etc..In conjunction with institute of the embodiment of the present invention The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at The step of memory 602, processor 601 reads the information in memory 602, the above method is completed in conjunction with its hardware.
It is understood that embodiments described herein can use hardware, software, firmware, middleware, microcode or its It combines to realize.For hardware realization, processing unit may be implemented in one or more application-specific integrated circuit (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor, In controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, it can be realized herein by executing the module (such as process, function etc.) of function described herein The technology.Software code is storable in memory and is executed by processor.Memory can in the processor or It is realized outside processor.
Specifically, the microprocessor of 6 chargers 603 is additionally operable to:Obtain at least three current values of charging interface output.
Specifically, the microprocessor 6 of charger 603 is additionally operable to:Detect at least three current values that get with it is corresponding Whether current threshold meets preset relation;If detecting, at least three current values are satisfied by default pass with corresponding current threshold System, then generate a current-order.
Specifically, the microprocessor 6 of charger 603 is additionally operable to:It obtains charging interface and is being loaded onto the first default drawing load through drawing After current value and continue the first current value exported in the first preset time;It obtains after stopping drawing load and continuing for the first interval time Second current value of charging interface output;Charging interface is obtained after being loaded onto the second default pulling load current value through drawing and continues second The third current value exported in preset time;Obtain charging interface exports after stopping drawing load and continuing for the second interval time the 4th Current value.
Further, the microprocessor 6 of charger 603 is additionally operable to:The first current value got, the second electricity are detected respectively Whether flow valuve, third current value and the 4th current value meet preset relation with corresponding current threshold;If detecting the first electric current Value, the second current value, third current value and the 4th current value are satisfied by preset relation with corresponding current threshold, then generate an electricity Stream instruction.
Wherein, the microprocessor 6 of charger 603 is additionally operable to:Whether pre- higher than first detect the first current value got If current value simultaneously continues the first preset time;Wherein, the first pre-set current value is less than the first default pulling load current value;
Detect whether the second current value got is less than the first pre-set current value and continued for the first interval time;
Detect whether the third current value got is higher than the second pre-set current value and continues the second preset time;Wherein, Second pre-set current value is less than the second default pulling load current value;
Detect whether the 4th current value got is less than the second pre-set current value and continued for the second interval time.
Wherein, the microprocessor of charger 603 is additionally operable to:If the first current value is higher than the first pre-set current value and continues the One preset time, the second current value less than the first pre-set current value and continue the first interval time, third current value higher than second Pre-set current value simultaneously continues the second preset time, the 4th current value less than the second pre-set current value and continued for the second interval time, Then generate a current-order.
The mobile terminal 600 of the embodiment of the present invention obtains multiple current values of charging interface output by charger 603, Current-order is generated to realize that the shutdown of charger output voltage, the program are judged by charger and controlled defeated based on current value The shutdown for going out voltage does not exceed the safe and applicable range of charger, avoids the security risk caused by charger overloads for a long time Problem.In addition, the program needs not rely on the charging system of two-way communication, it is suitable for various charging systems, has higher logical The property used.
Sixth embodiment
Fig. 7 is the structural schematic diagram of the mobile terminal of another embodiment of the present invention.Specifically, the mobile terminal in Fig. 7 700 can be mobile phone, tablet computer, personal digital assistant (Personal Digital Assistant, PDA) or vehicle mounted electric Brain etc..
Mobile terminal 700 in Fig. 7 includes power supply 710, memory 720, input unit 730, display unit 740, charging Device 750, processor 760, WIFI (Wireless Fidelity) module 770, voicefrequency circuit 780 and RF circuits 790, wherein fill Electric appliance 750 includes microprocessor, the output voltage for controlling charging interface.
Wherein, input unit 730 can be used for receiving information input by user, and generate the user with mobile terminal 700 Setting and the related signal input of function control.Specifically, in the embodiment of the present invention, which may include touching Control panel 731.Touch panel 731, also referred to as touch screen collect user on it or neighbouring touch operation (such as user Use the operation of any suitable object or attachment such as finger, stylus on touch panel 731), and according to preset journey Formula drives corresponding attachment device.Optionally, touch panel 731 may include two portions of touch detecting apparatus and touch controller Point.Wherein, the touch orientation of touch detecting apparatus detection user, and the signal that touch operation is brought is detected, it transmits a signal to Touch controller;Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives The processor 760, and order that processor 760 is sent can be received and executed.Furthermore, it is possible to using resistance-type, condenser type, The multiple types such as infrared ray and surface acoustic wave realize touch panel 731.In addition to touch panel 731, input unit 730 can be with Including other input equipments 732, other input equipments 732 can include but is not limited to physical keyboard, function key (such as volume control Button processed, switch key etc.), it is trace ball, mouse, one or more in operating lever etc..
Wherein, display unit 740 can be used for showing information input by user or be supplied to information and the movement of user The various menu interfaces of terminal.Display unit 740 may include display panel 741, optionally, LCD or organic light emission may be used The forms such as diode (Organic Light-Emitting Diode, OLED) configure display panel 741.
It should be noted that touch panel 731 can cover display panel 741, touch display screen is formed, when the touch display screen is examined It measures and sends processor 760 on it or after neighbouring touch operation to determine the type of touch event, be followed by subsequent processing device 760 provide corresponding visual output according to the type of touch event in touch display screen.
Touch display screen includes Application Program Interface viewing area and common control viewing area.The Application Program Interface viewing area And arrangement mode of the common control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with Including the interface elements such as icon and/or widget desktop controls of at least one application program.The Application Program Interface viewing area Or the empty interface not comprising any content.This commonly uses control viewing area for showing the higher control of utilization rate, for example, Application icons such as button, interface number, scroll bar, phone directory icon etc. are set.
Wherein processor 760 is the control centre of mobile terminal, utilizes each of various interfaces and connection whole mobile phone A part by running or execute the software program and/or module that are stored in first memory 721, and is called and is stored in Data in second memory 722 execute the various functions and processing data of mobile terminal, whole to be carried out to mobile terminal Monitoring.Optionally, processor 760 may include one or more processing units.
In embodiments of the present invention, by calling store the first memory 721 in software program and/or module and/ To the data in second memory 722, processor 760 is used for after detecting that charging interface temperature is more than predetermined threshold value to charging Interface draw when carrying, and charging interface is through drawing the current value for being loaded onto default pulling load current and exporting after continuing preset time.Charging The microprocessor of device 750 is used to obtain the current value of charging interface output;If current value meets preset condition, an electric current is generated Instruction;According to the current-order of generation, the output voltage of charging interface is turned off.
Specifically, the microprocessor of charger 750 is additionally operable to:Obtain at least three current values of charging interface output.
Specifically, the microprocessor of charger 750 is additionally operable to:Detect at least three current values got and corresponding electricity Whether stream threshold value meets preset relation;If detecting, at least three current values are satisfied by preset relation with corresponding current threshold, Then generate a current-order.
Further, the microprocessor of charger 750 is additionally operable to:It obtains charging interface and is being loaded onto the first default drawing load through drawing After current value and continue the first current value exported in the first preset time;It obtains after stopping drawing load and continuing for the first interval time Second current value of charging interface output;Charging interface is obtained after being loaded onto the second default pulling load current value through drawing and continues second The third current value exported in preset time;Obtain charging interface exports after stopping drawing load and continuing for the second interval time the 4th Current value.
Wherein, the microprocessor of charger 750 is additionally operable to:Detect respectively the first current value got, the second current value, Whether third current value and the 4th current value meet preset relation with corresponding current threshold;If detecting the first current value, Two current values, third current value and the 4th current value are satisfied by preset relation with corresponding current threshold, then generate an electric current and refer to It enables.
Specifically, the microprocessor of charger 750 is additionally operable to:Whether pre- higher than first detect the first current value got If current value simultaneously continues the first preset time;Wherein, the first pre-set current value is less than the first default pulling load current value;
Detect whether the second current value got is less than the first pre-set current value and continued for the first interval time;
Detect whether the third current value got is higher than the second pre-set current value and continues the second preset time;Wherein, Second pre-set current value is less than the second default pulling load current value;
Detect whether the 4th current value got is less than the second pre-set current value and continued for the second interval time.
Specifically, the microprocessor of charger 750 is additionally operable to:If the first current value is higher than the first pre-set current value and continues First preset time, the second current value less than the first pre-set current value and continue the first interval time, third current value higher than the Two pre-set current values simultaneously continue the second preset time, the 4th current value less than the second pre-set current value and when continuing the second interval Between, then generate a current-order.
The mobile terminal 700 of the embodiment of the present invention obtains multiple current values of charging interface output by charger 750, Current-order is generated to realize that the shutdown of charger output voltage, the program are judged by charger and controlled defeated based on current value The shutdown for going out voltage does not exceed the safe and applicable range of charger, avoids the security risk caused by charger overloads for a long time Problem.In addition, the program needs not rely on the charging system of two-way communication, it is suitable for various charging systems, has higher logical The property used.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit It connects, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme 's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes:USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can to store program code Medium.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist In protection scope of the present invention.

Claims (9)

1. a kind of voltage control method of charging interface is applied to a charger, which is characterized in that including:
Obtain at least three current values of charging interface output;Wherein, the current value is:Mobile terminal is detecting charging When mouth temperature to charging interface after predetermined threshold value more than carrying out drawing load, charging interface is loaded onto default pulling load current through drawing and continues pre- If the current value exported after the time;
Detect whether at least three current values got meet preset relation with corresponding current threshold;
If detecting, at least three current value is satisfied by preset relation with corresponding current threshold, generates an electric current and refers to It enables;
According to the current-order of generation, the output voltage of the charging interface is turned off;
Wherein, the step of obtaining at least three current value of charging interface output, including:
Charging interface is obtained after being loaded onto the first default pulling load current value through drawing and continues exported in the first preset time first Current value;
Obtain the second current value that charging interface exports after stopping drawing load and continuing for the first interval time;
Charging interface is obtained after being loaded onto the second default pulling load current value through drawing and continues the third exported in the second preset time Current value;
Obtain the 4th current value that charging interface exports after stopping drawing load and continuing for the second interval time.
2. the voltage control method of charging interface according to claim 1, which is characterized in that if the current value is full Sufficient preset condition, then the step of generating a current-order, including:
Detect respectively first current value, the second current value, third current value and the 4th current value that get with it is corresponding Whether current threshold meets preset relation;
If detecting first current value, the second current value, third current value and the 4th current value and corresponding current threshold It is satisfied by preset relation, then generates a current-order.
3. the voltage control method of charging interface according to claim 2, which is characterized in that described to detect the institute got State whether the first current value, the second current value, third current value and the 4th current value meet default pass with corresponding current threshold The step of being, including:
Detect whether first current value got is higher than the first pre-set current value and continues the first preset time;Wherein, First pre-set current value is less than the first default pulling load current value;
Detect whether second current value got is less than the first pre-set current value and continued for the first interval time;
Detect whether the third current value got is higher than the second pre-set current value and continues the second preset time;Wherein, Second pre-set current value is less than the second default pulling load current value;
Detect whether the 4th current value got is less than the second pre-set current value and continued for the second interval time.
4. the voltage control method of charging interface according to claim 3, which is characterized in that if described detect described One current value, the second current value, third current value and the 4th current value are satisfied by preset relation with corresponding current threshold, then give birth to Include at the step of current-order:
If first current value is higher than the first pre-set current value and continues the first preset time, the second current value in advance less than first If current value simultaneously continues the first interval time, third current value higher than the second pre-set current value and continues the second preset time, the Four current values are less than the second pre-set current value and continue for the second interval time, then generate a current-order.
5. a kind of charger, which is characterized in that including:
Acquisition module, including:Acquisition submodule, at least three current values for obtaining charging interface output;Wherein, the electricity Flow valuve is:Mobile terminal to charging interface after detecting that charging interface temperature is more than predetermined threshold value when carrying out drawing load, charging The current value that mouth exports after drawing is loaded onto default pulling load current and continues preset time;
Generation module, including:Detection sub-module is with corresponding current threshold for detecting at least three current values got It is no to meet preset relation;Generate submodule, for work as the detection sub-module detect at least three current value with it is corresponding Current threshold when being satisfied by preset relation, generate a current-order;
Processing module, the current-order for being generated according to the generation module turn off the output electricity of the charging interface Pressure;
Wherein, the acquisition module includes:
First acquisition unit, it is default for obtaining charging interface after being loaded onto the first default pulling load current value through drawing and continuing first The first current value exported in time;
Second acquisition unit carries and charging interface exports after continuing for the first interval time the second electric current for obtaining to stop drawing Value;
Third acquiring unit, it is default for obtaining charging interface after being loaded onto the second default pulling load current value through drawing and continuing second The third current value exported in time;
4th acquiring unit carries and charging interface exports after continuing for the second interval time the 4th electric current for obtaining to stop drawing Value.
6. charger according to claim 5, which is characterized in that the generation module includes:
Detection unit, for detecting first current value got, the second current value, third current value and the 4th electricity respectively Whether flow valuve meets preset relation with corresponding current threshold;
Generation unit detects first current value, the second current value, third current value and for working as the detection unit Four current values are satisfied by preset relation with corresponding current threshold, then generate a current-order.
7. charger according to claim 6, which is characterized in that the detection unit includes:
First detection sub-unit, for detect first current value got whether higher than the first pre-set current value and continue First preset time;Wherein, the first pre-set current value is less than the first default pulling load current value;
Second detection sub-unit, for detect second current value got whether less than the first pre-set current value and continue First interval time;
Third detection sub-unit, for detect the third current value got whether higher than the second pre-set current value and continue Second preset time;Wherein, the second pre-set current value is less than the second default pulling load current value;
4th detection sub-unit, for detect the 4th current value got whether less than the second pre-set current value and continue Second interval time.
8. charger according to claim 7, which is characterized in that the generation unit includes:
Subelement is generated, for working as first current value higher than the first pre-set current value and continuing the first preset time, second Current value is less than the first pre-set current value and continues the first interval time, third current value higher than the second pre-set current value and continues Second preset time, the 4th current value generate a current-order less than the second pre-set current value and when continuing for the second interval time.
9. a kind of mobile terminal, which is characterized in that including such as claim 5~8 any one of them charger.
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