CN103633709A - Charge recognition system and method - Google Patents

Charge recognition system and method Download PDF

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Publication number
CN103633709A
CN103633709A CN201310668845.3A CN201310668845A CN103633709A CN 103633709 A CN103633709 A CN 103633709A CN 201310668845 A CN201310668845 A CN 201310668845A CN 103633709 A CN103633709 A CN 103633709A
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China
Prior art keywords
charging
current
charger
mobile terminal
module
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CN201310668845.3A
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CN103633709B (en
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俞斌
杨维琴
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SHANDONG WANSHIDA SPECIAL PURPOSE VEHICLE MANUFACTURING Co.,Ltd.
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TCL Communication Ningbo Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a charge recognition system and method. The system comprises a charger and a mobile terminal. The charger comprises a charge output module, a device detection module and a charge output interface. The mobile terminal comprises a charge input interface, a charge setting module, a charger detection module and an input processing module. The charge output module, the device detection module and the charge output interface are connected in sequence. The charge output interface is connected with the charge input interface. A current sequence of the mobile terminal is detected through the device detection module and compared to a preset current sequence in the device detection module so as to recognize effectiveness of the mobile terminal; charge status of the charger is controlled according to the effectiveness; charging is allowed as long as the current sequence in the mobile terminal matches with the current sequence of the charger; compatibility of the charger is improved, and charging is safer and more reliable.

Description

A kind of charging recognition system and recognition methods thereof
Technical field
The present invention relates to electronics and produce device charging technique, particularly a kind of charging recognition system and recognition methods thereof.
Background technology
Along with charging accident repeatedly occurs for the charge prepd of the world-class mobile terminal manufacturers produce of many families, people are more and more higher for the safe requirement of charging.Charger, as the most frequently used and indispensable annex of mobile terminal, must have higher reliability and fail safe.But because standard configuration charger circuit simplicity of design and the charging inlet of most of mobile terminal can be general, cause user in routine use process, can use non-standard configuration charger to charge to mobile terminal.Owing to generally having the difference on electric parameter between non-standard configuration charger and standard configuration charger, easily produce and charge extremely, occur damaging the situations such as charger, mobile terminal.
Therefore, mobile device manufacturer is all devoted to produce the mobile terminal that can only use standard configuration charger mostly at present, and the mobile terminal product that for example Apple produces all can only be used the charging of apple charger.Do so on the one hand and can set up brand authority; Also can force users use standard configuration charger on the other hand, greatly reduce due to the various charging safety problems of using non-standard charger to cause.But, so just reduced the compatibility of charger.Many moneys mobile terminal is equipped with corresponding charger can make user carry inconvenience, if standard configuration charger is lost or damage and cannot charge, not only affects user's use, also increases cost.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of charging recognition system and recognition methods thereof, with solve the compatibility of standard configuration charger in present technology low, carry inconvenient problem.
In order to achieve the above object, the present invention has taked following technical scheme:
A charging recognition system, comprises charger and mobile terminal, and described charger can be identified the validity of mobile terminal, according to the validity of mobile terminal, controls the charged state to the battery of mobile terminal, wherein,
Described charger comprises:
Charging output module, for exporting corresponding charging voltage and charging current according to the current sequence of described mobile terminal;
Equipment Inspection module, for detection of the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and predetermined current sequence, controls the charged state of charger according to described validity;
Charging output interface, for exporting charging voltage, charging current, and the current sequence of mobile terminal receive;
Described mobile terminal comprises:
Charging input interface, for receiving charging voltage, charging current, and the current sequence of output mobile terminal;
Charging arranges module, for the also current sequence of memory mobile terminal is set, adjusts the charging current of charger output according to current sequence;
Whether charger detection module, be connected with charging input interface for detection of charger, starts input processing module and charging arranges module when charger accesses;
Input processing module, for obtaining the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set;
The charging output module of described charger, equipment Inspection module, charging output interface connect successively, the charging of described mobile terminal arranges module, charger detection module, input processing module and all connects charging input interface, and described charging output interface connects charging input interface;
Described current sequence is a string current value.
In described charging recognition system, described equipment Inspection module comprises that sampling resistor, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, charging enable unit and microcontroller; One end connection charging output module of described sampling resistor, the other end of sampling resistor connects the input that charging enables unit, and the first test side of described microcontroller is by one end of the first resistance connection sampling resistor, also by the second grounding through resistance; The second test side of described microcontroller is by the other end of the 3rd resistance connection sampling resistor, also by the 4th grounding through resistance; The output of described microcontroller connects the control end that charging enables unit; The output that described charging enables unit connects charging output interface.
In described charging recognition system, described microcontroller comprises:
The first voltage detection unit, for detection of the voltage on its first test side;
Second voltage detecting unit, for detection of the voltage on its second test side;
Voltage comparison unit, for calculate the current value that flows through sampling resistor according to voltage on first and second test side, whether more described current value is identical with predetermined current sequence and export corresponding comparative result and open and close charging and enable unit.
In described charging recognition system, described the first resistance is identical with the resistance of the 3rd resistance, and the second resistance is identical with the resistance of the 4th resistance.
In described charging recognition system, it is switching circuit that described charging enables unit.
In described charging recognition system, described charging arranges module and comprises:
Memory cell, for arranging and storaging current sequence;
Electric current setting unit, controls for calling current sequence the charging current that charger is exported;
Described memory cell connects charging input interface by electric current setting unit.
In described charging recognition system, described input processing module comprises:
Comparision of quantity of electricity unit, for obtaining the current battery electric quantity of mobile terminal, by described current battery electric quantity and predetermined threshold value comparison; When being greater than predetermined threshold value, current battery electric quantity starts discharge cell;
Discharge cell, for bleeding off the part charging current of charger input.
Adopt a recognition methods for described charging recognition system, it comprises:
When the charger detection module of A, mobile terminal detects charger access, input processing module obtains the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set;
The current sequence that the charging output module of B, charger arranges in module according to charging is exported corresponding charging voltage and charging current;
C, equipment Inspection module detect the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and parameter preset, control the charged state of charger according to described validity.
In described recognition methods, described steps A specifically comprises:
When A1, charger are connected with mobile terminal, whether charger detection module detects charging output interface and is successfully connected with charging input interface, starts input processing module and charging arranges module while successfully connecting;
Comparision of quantity of electricity unit in A2, input processing module obtains the current battery electric quantity of mobile terminal, judges whether described current battery electric quantity is less than predetermined threshold value: if be less than, perform step A3; If be greater than, perform step A4;
The current sequence that A3, electric current setting unit are called in memory cell is controlled the charging current that charger is exported;
A4, startup discharge cell bleed off the part charging current of charger input, and the part charging current bleeding off equals the maximum of current sequence in memory cell.
In described recognition methods, described step C specifically comprises:
C1, the first voltage detection unit detect the voltage on its first test side, and second voltage detecting unit detects the voltage on its second test side;
C2, voltage comparison unit calculate the current value that flows through sampling resistor according to the voltage on first and second test side, whether more described current value is identical with the predetermined current sequence of storing in voltage comparison unit;
When C3, current value are identical with predetermined current sequence, charging enables unit and keeps conducting state; When current value is different from predetermined current sequence, voltage comparison unit is controlled charging and is enabled unit disconnection.
Compared to prior art, charging recognition system provided by the invention and recognition methods thereof, by charger, identified the validity of mobile terminal, by the equipment Inspection module of charger, detect the current sequence of mobile terminal, and compare with predetermined current sequence in equipment Inspection module the validity of mating to identify mobile terminal, according to described validity, control the charged state of charger; Because the current sequence of mobile terminal can arrange modification, chargeable as long as the current sequence in mobile terminal is mated with the current sequence of charger, improved the compatibility of charger, make to charge more safe and reliable.
Accompanying drawing explanation
Fig. 1 is the charge schematic diagram of charger in recognition system of the present invention.
Fig. 2 is the charge structured flowchart of mobile terminal in recognition system of the present invention.
Fig. 3 is the recognition methods flow chart of charging recognition system of the present invention.
Embodiment
The invention provides a kind of charging recognition system and recognition methods thereof, by charger, identify the validity of mobile terminal.When the current sequence arranging in mobile terminal is identical with the current sequence of storing in charger, confirm that mobile terminal is effective, charger charges to mobile terminal.Only need guarantee that the quality of the charger of standard configuration can guarantee charging security.Because the current sequence in mobile terminal can be changed, the mobile terminal of different brands is shared the current sequence of regulation and can be used a charger to charge, improve the compatibility of charger, avoided many moneys mobile terminal to carry the inconvenient problem of carrying that a plurality of chargers cause.For making object of the present invention, technical scheme and effect clearer, clear and definite, referring to accompanying drawing, developing simultaneously, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1 and Fig. 2, charging recognition system provided by the invention comprises charger and mobile terminal.Described charger can be identified the validity of mobile terminal, according to the validity of mobile terminal, controls the charged state to mobile terminal.Wherein, described charger comprises charging output module 100, equipment Inspection module 200 and charging output interface 300.Described mobile terminal comprises that charging input interface 400, charging arrange module 500, charger detection module 600 and input processing module 700.Described charging output module 100, equipment Inspection module 200, charging output interface 300 connect successively.Described charging arranges module 500, charger detection module 600, input processing module 700 and all connects charging input interface 400.
When charger inserts mobile terminal, the VDD2 pin of the charging output interface 300 of charger, GND pin are connected with VDD pin, the GND pin of the charging input interface 400 of mobile terminal respectively.Now, whether charger detection module 600 detects charger and is successfully connected with charging input interface 400, if having 5V voltage on the VDD pin of detection charging input interface 400, represents charger and mobile terminal successful connection.Before starting charging, need to start input processing module 700 and judge current battery electric quantity, start charging the charging current that module 500 arranges charger output is set.
Described charging arranges module 500 the also current sequence of memory mobile terminal is set, and described current sequence is a string current value, for example: 100mA, 300mA, 200mA, 150mA, 100mA, 200mA.Mobile terminal, according to the charging current of the corresponding adjustment charger output of described current sequence, makes the size of charging current identical with current sequence.During concrete enforcement, described charging arranges module 500 and comprises memory cell 501 and electric current setting unit 502, and described memory cell 501 connects charging input interface 400 by electric current setting unit 502.Memory cell 501 is for arranging and storaging current sequence.Electric current setting unit 502 is adjusted the charging current of charger output for calling this current sequence.That is to say, the current sequence of the mobile terminal that the charging current of charger output detects with equipment Inspection module 200 is identical.
During actual charging, battery electric quantity has determined the size of charging current.If battery electric quantity is low, need larger charging current; If battery electric quantity is higher, only need very little charging current.For this very little charging current, may on charger, cannot detect.Therefore, after charger inserts, by input processing module 700, obtained the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value (judging the threshold value whether charging current can be detected) are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set.
In the specific implementation, described input processing module 700 comprises comparision of quantity of electricity unit 701 and discharge cell 702.Comparision of quantity of electricity unit 701 obtains the current battery electric quantity of mobile terminal, by described current battery electric quantity and predetermined threshold value comparison; When being greater than predetermined threshold value, current battery electric quantity starts discharge cell 702.Discharge cell 702 bleeds off the part charging current of charger input, makes charger the current sequence of mobile terminal can be detected and can guarantee again battery is carried out to low current charge.When if current battery electric quantity is less than predetermined threshold value, discharge cell 702 does not start, and now electric current setting unit 502 work, make the charging output module 100 of charger export corresponding charging voltage and charging current according to the current sequence of mobile terminal.This charging voltage is 5V direct voltage, and the charging current of charger output changes according to the sequencing of the current sequence of mobile terminal (as 100mA, 300mA, 200mA, 150mA, 100mA, 200mA).
Now, equipment Inspection module 200 detects the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and predetermined current sequence, controls the charged state of charger according to described validity.If the current sequence of mobile terminal is identical with predetermined current sequence in charger, mobile terminal is effective, can keep charged state; If different, mobile terminal is invalid, and equipment Inspection module disconnects charging path, stops charging.
Described equipment Inspection module 200 comprises that sampling resistor Rs, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, charging enable unit 220 and microcontroller 210; One end of described sampling resistor Rs connects the VDD1 pin of charging output module 100, the other end of sampling resistor Rs connects the input 1 that charging enables unit, and the first test side a of described microcontroller 210 is by one end of the first resistance R 1 connection sampling resistor Rs, also by the second resistance R 2 ground connection; The second test side b of described microcontroller 210 is by the other end of the 3rd resistance R 3 connection sampling resistor Rs, also by the 4th resistance R 4 ground connection; The output c of described microcontroller 210 connects the control end 3 that charging enables unit 220; Described charging enables the VDD2 pin of the output 2 connection charging output interfaces 300 of unit 220.
Please continue to refer to Fig. 1, the electric current that flows through sampling resistor Rs is the charging current that mobile terminal needs, and this charging current is according to the numerical value permutations of the current sequence in mobile terminal.Microcontroller 210 can calculate according to the voltage at sampling resistor Rs two ends (VRs1, VRs2) and resistance thereof the electric current that flows through sampling resistor Rs.Described microcontroller 210 comprises the first voltage detection unit 211 for detection of the voltage on the first test side, second voltage detecting unit 212 for detection of the voltage on the second test side, and for calculate the current value that flows through sampling resistor according to voltage on first and second test side, whether more described current value is identical with predetermined current sequence and export corresponding comparative result and open and close the voltage comparison unit 213 that charging enables unit.
Described formula is: , , wherein, IRs represents to flow through the electric current of sampling resistor, and VRs1, VRs2 represent the voltage at sampling resistor two ends, and V1 represents the voltage on the first test side, V2 represents the voltage on the second test side, Rs represents the resistance of sampling resistor, and R1 represents the resistance of the first resistance, and R2 represents the resistance of the second resistance, R3 represents the resistance of the 3rd resistance, and R4 represents the resistance of the 4th resistance.
In order not affect the size of charging current, can sample again the value of this charging current, the resistance of described sampling resistor is 10m Ω.For convenient, calculate, in the present embodiment, described the first resistance R 1 is identical with the resistance of the 3rd resistance R 3, and the second resistance R 2 is identical with the resistance of the 4th resistance R 4.More preferably, R1=R3=500k Ω, R2=R4=180k Ω.? .
The electric current I Rs that flows through sampling resistor Rs reflects value and the arrangement mode thereof of the current sequence of mobile terminal.The interior pre-stored predetermined current sequence of voltage comparison unit 213, it is by the IRs calculating and the comparison of predetermined current sequence, be equivalent to the current sequence of charger to compare with the current sequence of mobile terminal: if two current sequence are identical, represent that mobile terminal is effective, can charge to it, keep charging to enable the conducting state of unit 220; If two current sequence are not identical, represent that mobile terminal is invalid, should stop charging, now voltage comparison unit 213 is controlled charging and is enabled unit 220 disconnections, stops charging.
In the specific implementation, described charging enables unit 220 for switching circuit, as adopted the switching tube of metal-oxide-semiconductor or triode and so on, also can adopt one-way conduction to have the switching device of leakage protection measure.
Should be understood that, when charger inserts mobile terminal, it is conductings that charging enables unit 220, and now charger charges to mobile terminal.The current sequence that then charger detects mobile terminal at once judges the validity of mobile terminal, and this process completes in Preset Time (2s or 5s).After definite mobile terminal is effective, charging setting unit 502 can no longer be called current sequence in memory cell 501, existing charging setting is installed and charges.That is to say, current sequence only, as the foundation of judgement mobile terminal validity, does not affect normal charged state.
Charging recognition system based on above-mentioned, the present invention is also corresponding provides a kind of recognition methods, whether legal detects mobile terminal when charging by charger.Whether the present invention has broken existing technology prejudice (detecting by mobile terminal whether charger is standard configuration charger or no qualified), adopt charger to detect mobile terminal effective.The charger that the charger adopting is standard configuration, mass effect is guaranteed.As long as having the current sequence of coupling, mobile terminal can make charger charge to it.As long as each electronics brand is combined authorization like this, all downloading and using the current sequence of coupling is available a charger charging, improved the compatibility of charger, also realized the fusion between individual brand simultaneously, greatly facilitate portably using of user, reduce purchase cost, also improved the fail safe of charging.As shown in Figure 3, described recognition methods comprises:
When the charger detection module of S100, mobile terminal detects charger access, input processing module obtains the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set;
The current sequence that the charging output module of S200, charger arranges in module according to charging is exported corresponding charging voltage and charging current;
S300, equipment Inspection module detect the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and parameter preset, control the charged state of charger according to described validity.
Because the current sequence arranging in memory cell is fixed value, as the judgement of mobile terminal validity.The charging current that electric current setting unit is called this current sequence control charger output is fixed value.While considering mobile terminal charging, its battery electric quantity is different, only needs low current charge when battery electric quantity is low, just needs large current charge when battery electric quantity is high.Therefore, in the situation that battery electric quantity is higher, can identical with current sequence (now charging current be larger) in order to make electric current setting unit control the charging current of charger output, and this charging current can not damage battery, needs to reduce being input to the charging current in battery.Described S100 specifically comprises: when charger is connected with mobile terminal, whether charger detection module detects charging output interface and be successfully connected with charging input interface, starts input processing module and charging arranges module while successfully connecting; Now charging enables cell conduction.Then, comparision of quantity of electricity unit in input processing module obtains the current battery electric quantity of mobile terminal, judge whether described current battery electric quantity is less than predetermined threshold value: if be less than, the current sequence that electric current setting unit is called in memory cell is controlled the charging current that charger is exported; If be greater than, start the part charging current that discharge cell bleeds off charger input, the part charging current bleeding off equals the maximum of current sequence in memory cell.In the situation that battery electric quantity is higher, charger can detect the current sequence of mobile terminal and can guarantee again battery is carried out to low current charge like this.
Please refer to Fig. 1, the current sequence that flows through the careless mobile terminal of sampling resistor Rs electric current synchronously changes, and the voltage that equipment Inspection module 200 calculates sampling resistor Rs two ends can obtain the current sequence of mobile terminal.Described step S300 specifically comprises: the first step, the first voltage detection unit detect the voltage on its first test side, and second voltage detecting unit detects the voltage on its second test side.Second step, voltage comparison unit calculate the current value that flows through sampling resistor according to the voltage on first and second test side, whether more described current value is identical with the predetermined current sequence of storing in voltage comparison unit; In the present embodiment, the first resistance R 1 is identical with the resistance of the 3rd resistance R 3, and the second resistance R 2 is identical with the resistance of the 4th resistance R 4, so computing formula is: .When the 3rd step, current value are identical with predetermined current sequence, charging enables unit and keeps conducting state; When current value is different from predetermined current sequence, voltage comparison unit is controlled charging and is enabled unit disconnection.
In the specific implementation, described current sequence be a string current value, C1, C2, C3 ..., CN.Wherein, 1,2,3 ... N is current value sequence sign.Suppose that N equals 6, current sequence can be 100mA(C1), 300mA(C2), 200mA(C3), 150mA(C4), 100mA(C5), 200mA(C6).The charging current of the charging output module of charger output in Preset Time (2s or 5s) according to the arrangement mode of current sequence successively synchronous change, the present embodiment was not construed as limiting the lasting time of each current value, as long as complete the variation of all current values in Preset Time.Owing to there being a plurality of current values in current sequence, above-mentioned second step and the 3rd step specifically comprise:
1, voltage comparison unit arranges variable Cx, and X is put to 1.Described X is current value sequence sign, represents that voltage comparison unit first calls the first current value C1 in current sequence when X puts 1.
2, voltage comparison unit is according to formula calculate the current current value I Rs that flows through sampling resistor Rs.
3, judge whether this current value I Rs equals current value Cx: if return to step 2 after the very first time reaches; If not, perform step 5.
4, judge whether X equals N: if perform step 6; Otherwise the value of X is added to 1, return to step 2.
5, voltage comparison unit judgement mobile terminal is invalid, controls charging and enables unit disconnection, stops mobile terminal charging.
6, voltage comparison unit judgement mobile terminal is effective, keeps charging to enable the conducting state of unit, allows mobile terminal to charge.
Owing to there being a plurality of current values in current sequence, need to compare successively by step 2 ~ 4.First X is put to 1 and call the first current value C1, by the current value I Rs calculating for the first time and the first current value C1 comparison.If not identical, the current sequence of charger is different with the current sequence of mobile terminal, can directly stop charging.Because the present embodiment did not limit the lasting time of each current value in current sequence, therefore identical in the situation that, need to after the very first time (as 100ms), calculate again primary current value IRs, whether the current value that judges mobile terminal is changed, after change, need by X add 1, the current value that calls next current value and mobile terminal compares.Repeating step 2 ~ step 4, until that the current sequence in mobile terminal and charger is compared is one by one complete, only have the size of in the current sequence of mobile terminal and the current sequence of charger current value and sort when in full accord, charger identification mobile terminal is effective, can charge to it.As long as have 1 current value correspondence not go up that mobile terminal is invalid, can not charge.
Current value setting in current sequence and number need meet said process (step 1 ~ 6) and complete in Preset Time (2s or 5s), so can identify fast the validity of mobile terminal, can not affect charging effect again.Because the time is very short, can also stop the potential safety hazard of charging.
In sum, charging recognition system provided by the invention and recognition methods thereof, when charging, by charger, identified the validity of mobile terminal, by the equipment Inspection module of charger, detect the current sequence of mobile terminal, and compare with predetermined current sequence in equipment Inspection module the validity of mating to identify mobile terminal, when the current sequence arranging in mobile terminal is identical with the current sequence of storing in charger, confirm that mobile terminal is effective, charger charges to mobile terminal.Only need guarantee that the quality of the charger of standard configuration can guarantee charging security.Because the current sequence in mobile terminal can be changed, the mobile terminal of different brands is shared the current sequence of regulation and can be used a charger to charge, improved the compatibility of charger, avoid many moneys mobile terminal to carry the inconvenient problem of carrying that a plurality of chargers cause, make charging more safe and reliable.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.

Claims (10)

1. a charging recognition system, comprises charger and mobile terminal, and described charger can be identified the validity of mobile terminal, according to the validity of mobile terminal, controls the charged state to the battery of mobile terminal, it is characterized in that,
Described charger comprises:
Charging output module, for exporting corresponding charging voltage and charging current according to the current sequence of described mobile terminal;
Equipment Inspection module, for detection of the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and predetermined current sequence, controls the charged state of charger according to described validity;
Charging output interface, for exporting charging voltage, charging current, and the current sequence of mobile terminal receive;
Described mobile terminal comprises:
Charging input interface, for receiving charging voltage, charging current, and the current sequence of output mobile terminal;
Charging arranges module, for the also current sequence of memory mobile terminal is set, adjusts the charging current of charger output according to current sequence;
Whether charger detection module, be connected with charging input interface for detection of charger, starts input processing module and charging arranges module when charger accesses;
Input processing module, for obtaining the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set;
The charging output module of described charger, equipment Inspection module, charging output interface connect successively, the charging of described mobile terminal arranges module, charger detection module, input processing module and all connects charging input interface, and described charging output interface connects charging input interface;
Described current sequence is a string current value.
2. charging recognition system according to claim 1, is characterized in that, described equipment Inspection module comprises that sampling resistor, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, charging enable unit and microcontroller; One end connection charging output module of described sampling resistor, the other end of sampling resistor connects the input that charging enables unit, and the first test side of described microcontroller is by one end of the first resistance connection sampling resistor, also by the second grounding through resistance; The second test side of described microcontroller is by the other end of the 3rd resistance connection sampling resistor, also by the 4th grounding through resistance; The output of described microcontroller connects the control end that charging enables unit; The output that described charging enables unit connects charging output interface.
3. charging recognition system according to claim 2, is characterized in that, described microcontroller comprises:
The first voltage detection unit, for detection of the voltage on its first test side;
Second voltage detecting unit, for detection of the voltage on its second test side;
Voltage comparison unit, for calculate the current value that flows through sampling resistor according to voltage on first and second test side, whether more described current value is identical with predetermined current sequence and export corresponding comparative result and open and close charging and enable unit.
4. charging recognition system according to claim 3, is characterized in that, described the first resistance is identical with the resistance of the 3rd resistance, and the second resistance is identical with the resistance of the 4th resistance.
5. charging recognition system according to claim 3, is characterized in that, it is switching circuit that described charging enables unit.
6. charging recognition system according to claim 1, is characterized in that, described charging arranges module and comprises:
Memory cell, for arranging and storaging current sequence;
Electric current setting unit, controls for calling current sequence the charging current that charger is exported;
Described memory cell connects charging input interface by electric current setting unit.
7. charging recognition system according to claim 6, is characterized in that, described input processing module comprises:
Comparision of quantity of electricity unit, for obtaining the current battery electric quantity of mobile terminal, by described current battery electric quantity and predetermined threshold value comparison; When being greater than predetermined threshold value, current battery electric quantity starts discharge cell;
Discharge cell, for bleeding off the part charging current of charger input.
8. adopt a recognition methods for the recognition system of charging described in claim 1, it is characterized in that, comprising:
When the charger detection module of A, mobile terminal detects charger access, input processing module obtains the current battery electric quantity of mobile terminal, current battery electric quantity and predetermined threshold value are compared, according to comparative result, determine whether starting discharge module, to guarantee that charger can be exported to charge, the set charging current of module is set;
The current sequence that the charging output module of B, charger arranges in module according to charging is exported corresponding charging voltage and charging current;
C, equipment Inspection module detect the current sequence of mobile terminal, according to the validity of the comparative result judgement mobile terminal of current sequence and parameter preset, control the charged state of charger according to described validity.
9. recognition methods according to claim 8, is characterized in that, described steps A specifically comprises:
When A1, charger are connected with mobile terminal, whether charger detection module detects charging output interface and is successfully connected with charging input interface, starts input processing module and charging arranges module while successfully connecting;
Comparision of quantity of electricity unit in A2, input processing module obtains the current battery electric quantity of mobile terminal, judges whether described current battery electric quantity is less than predetermined threshold value: if be less than, perform step A3; If be greater than, perform step A4;
The current sequence that A3, electric current setting unit are called in memory cell is controlled the charging current that charger is exported;
A4, startup discharge cell bleed off the part charging current of charger input, and the part charging current bleeding off equals the maximum of current sequence in memory cell.
10. recognition methods according to claim 8, is characterized in that, described step C specifically comprises:
C1, the first voltage detection unit detect the voltage on its first test side, and second voltage detecting unit detects the voltage on its second test side;
C2, voltage comparison unit calculate the current value that flows through sampling resistor according to the voltage on first and second test side, whether more described current value is identical with the predetermined current sequence of storing in voltage comparison unit;
When C3, current value are identical with predetermined current sequence, charging enables unit and keeps conducting state; When current value is different from predetermined current sequence, voltage comparison unit is controlled charging and is enabled unit disconnection.
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