CN104135057B - terminal, charger and charging method - Google Patents

terminal, charger and charging method Download PDF

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Publication number
CN104135057B
CN104135057B CN201410398456.8A CN201410398456A CN104135057B CN 104135057 B CN104135057 B CN 104135057B CN 201410398456 A CN201410398456 A CN 201410398456A CN 104135057 B CN104135057 B CN 104135057B
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terminal
charger
quick charge
signal
charging
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CN104135057A (en
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孙中兰
向林
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co 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 present invention proposes a kind of terminal, a kind of charger and a kind of charging method, wherein, described terminal comprises: transmitting element, be terminal while carrying out common charging at charger by USB, terminal is by reducing voltage signal on the signal identification line in USB to send quick charge request to charger; Judging unit, judges whether terminal receives the quick charge request response from charger; Control module, is that terminal receives quick charge request when response in judged result, and the voltage signal on control signal identification line, so that charger provides the target charging current corresponding with voltage signal for terminal, so that terminal is carried out to quick charge. By technical scheme of the present invention, can realize the quick charge of charger to terminal, solve the slow problem of charging.

Description

Terminal, charger and charging method
Technical field
The present invention relates to terminal technology field, in particular to a kind of terminal, a kind of charger andA kind of charging method.
Background technology
The terminals such as present mobile device (as mobile phone) are mainly to rely on charger end DP (DigitalPositive) and the connection of DM (DigitalMimus) carry out the identification to charger, asShown in Fig. 1, IDpin wiring is vacant state, in the time of charger end DP and DM short circuit, and terminalCan identify the type of charger by charger end DP and DM, as be identified as DCP (standardWall charging), and start charging by universal serial bus VBUS. Along with the power consumption of current terminal is more nextLarger, the capacity of its battery is also increasing, conventional charger be just faced with charge efficiency low, costThe problems such as the time is long, in order to solve the slow problem of charging, have introduced quick charger.
But, can only rely on DP and DM short circuit to identify common wall mold filling at current chargerFormula, and terminal is carried out to common charging, None-identified quick charge request, also cannot carry out terminalQuick charge.
Therefore, how to make the quick charge request that charger can identification terminal, terminal is carried out fastCharging, to improve charge efficiency, becomes technical problem urgently to be resolved hurrily at present.
Summary of the invention
The present invention, just based on the problems referred to above, has proposed a kind of new technical scheme, makes charger passableThe quick charge request of identification terminal, carries out quick charge to terminal, improves charge efficiency.
In view of this, an aspect of of the present present invention has proposed a kind of terminal, comprising: transmitting element, and in instituteStating charger is described terminal while carrying out common charging by USB, and described terminal is by fallingVoltage signal on signal identification line in low described USB is fast to send to described chargerSpeed charging request; Judging unit, judge described terminal whether receive from described charger fastCharging request response; Control module, judged result be described terminal receive described quick charge pleaseWhile asking response, control the voltage signal on described signal identification line, so that described charger is described endEnd provides the target charging current corresponding with described voltage signal, so that described terminal is filled fastElectricity.
In the prior art, the IDpin wiring in USB wiring is generally used for and judges that connection device isNo is main frame, and in the time detecting that the IDpin signal of connection device is low, this equipment is main frame, works as inspectionWhen the IDpin signal that measures connection device is high, this equipment is external equipment. In USB wiringIn, for external equipment, IDpin wiring is all directly unsettled at interface.
In this technical scheme, the signal identification line IDpin wiring in USB is at USBIn wiring, for what be communicated with, use the IDpin wiring being communicated with to connect terminal and charging as signal identification lineDevice, makes terminal pass through IDpin wiring and sends quick charge request to charger, fills when terminal receivesWhen the quick charge request of electrical equipment responds, can select by the voltage signal changing in IDpin wiringDifferent charging currents are charged. Like this, can promote charging energy by changing charging currentPower, has improved the efficiency of charging greatly.
In technique scheme, preferably, also comprise: setting unit, according to the setting receivingOrder, arranges multiple voltage signals, and the target charging current corresponding with each voltage signal, itsIn, the current value inverse correlation of the magnitude of voltage of described voltage signal and corresponding target charging current.
In this technical scheme, the voltage signal in IDpin wiring can pass through comparator or ADC(analog-digital converter) judges, different charging current value corresponding to voltage signal,When the voltage that applies in IDpin wiring is lower, the charging current obtaining is higher, for example, and magnitude of voltage1.8V, 1.5V, 1V and 0.5V be corresponding charging current 1A, 2A, 3A and 4A respectively.
Another aspect of the present invention has proposed a kind of charger, comprising: judging unit, and when described generalWhen voltage signal on signal identification line in universal serial bus reduces, whether passable according to described chargerDescribed in judging, the variation of identifying the voltage signal on signal in described USB identification line fillsElectrical equipment whether can identification terminal quick charge request; Transmit-Receive Unit, can know at described chargerWhen not described quick charge request, send quick charge response to described terminal; Recognition unit, is sending outSend quick charge response to described terminal, identify the voltage signal on described signal identification line; ChargingUnit, charges for described terminal provides the target corresponding with described voltage signal according to described voltage signalElectric current, to carry out quick charge to described terminal.
In this technical scheme, the IDpin wiring in USB is to connect in USB wiringLead to, use the IDpin wiring being communicated with to connect terminal and charger as signal identification line, work as chargingDevice identify terminal through IDpin wiring send quick charge request time, to terminal send quick chargeRequest response, and voltage signal in identification id pin wiring to be to determine corresponding charging current, and openBegin to charge. Like this, obtain different charging currents by the varying voltage signal in IDpin wiring,Can obtain multiple charging rate, quick charge is achieved, greatly improve the efficiency of charging.
In technique scheme, preferably, described judging unit specifically for: when described chargerCan identify the variation of the voltage signal on the signal identification line in described USB time, judgeDescribed charger can be identified the quick charge request of described terminal; When described charger None-identified instituteWhile stating the variation of the voltage signal on the signal identification line in USB, judge described chargerThe quick charge request of terminal described in None-identified.
In this technical scheme, charger is identified end by the voltage signal in identification id pin wiringThe quick charge request of end, the charging current of the different corresponding different sizes of voltage signal.
In technique scheme, preferably, described charhing unit also for: described charger withoutWhen method is identified described quick charge request, continue as described terminal by described USB and carry outCommon charging.
In this technical scheme, when charger is unidentified while going out the quick charge request of terminal, can'tQuit work, but can carry out common charging to terminal by universal serial bus VBUS, fill ensureingElectricity can not stop because charger None-identified goes out quick charge request, has promoted the reliable of chargingProperty.
In technique scheme, preferably, described recognition unit comprises: comparator or analog digitalConverter.
In this technical scheme, charger comes by comparator or ADC (analog-digital converter)Voltage signal in identification id pin wiring, different charging current value corresponding to voltage signal,When charger identifies voltage signal in IDpin wiring when lower, corresponding charging current is higher,For example, magnitude of voltage 1.8V, 1.5V, 1V and 0.5V corresponding charging current 1A, 2A, 3A respectivelyAnd 4A.
One side more of the present invention has proposed a kind of charging method, comprising: pass through logical at described chargerWith universal serial bus be described terminal while carrying out common charging, described terminal is by reducing described general serialVoltage signal on signal identification line in bus is to send quick charge request to described charger; ?When described voltage signal on signal identification line in described USB reduces, fill according to describedWhether electrical equipment can identify the variation of the voltage signal on the signal identification line in described USBJudge whether described charger can identify the quick charge request of described terminal, and described in judgingWhen charger can be identified described quick charge request, send quick charge request response to described endEnd; In the time that described terminal receives described quick charge request response, control on described signal identification lineVoltage signal so that described charger provides the target corresponding with described voltage signal for described terminalCharging current, to carry out quick charge to described terminal.
In this technical scheme, the IDpin wiring in USB is to connect in USB wiringLead to, use the IDpin wiring being communicated with to connect terminal and charger as signal identification line. Terminal is logicalCross IDpin wiring and send quick charge request to charger, when charger identifies terminal through IDpinWhen quick charge request that wiring sends, send quick charge request response to terminal, and identification idVoltage signal in pin wiring is to determine corresponding charging current, and it is fast that terminal reception charger is beamed backSpeed charging request response, starts charging. Like this, obtain by the varying voltage signal in IDpin wiringTo different charging currents, can obtain multiple charging rate, quick charge is achieved, greatlyImprove the efficiency of charging.
In technique scheme, preferably, also comprise: described terminal is according to the life that arranges receivingOrder, arranges multiple voltage signals, and the target charging current corresponding with each voltage signal, itsIn, the current value inverse correlation of the magnitude of voltage of described voltage signal and corresponding target charging current.
In this technical scheme, it is different to select that user can arrange different voltage signals in terminalCharging current, controls charging rate, different charging current value corresponding to voltage signal,When the voltage that arranges in IDpin wiring is lower, the charging current obtaining is higher, for example, and magnitude of voltage1.8V, 1.5V, 1V and 0.5V be corresponding charging current 1A, 2A, 3A and 4A respectively.
In technique scheme, preferably, described whether can identify according to described charger described inWhether the variation of the voltage signal on the signal identification line in USB judges described chargerCan identify the quick charge request of described terminal, specifically comprise: when described charger None-identified instituteWhile stating the variation of the voltage signal on the signal identification line in USB, judge described chargingThe described quick charge request of terminal described in device None-identified; When described charger can be identified described logicalWhile identifying the variation of the voltage signal on line with the signal in universal serial bus, judge that described charger canTo identify the described quick charge request of described terminal.
In this technical scheme, charger is identified end by the voltage signal in identification id pin wiringThe quick charge request of end, the charging current of the different corresponding different sizes of voltage signal.
In technique scheme, preferably, please in quick charge described in described charger None-identifiedWhile asking, described charger continues as described terminal by described USB and carries out common charging.
In this technical scheme, when charger is unidentified while going out the quick charge request of terminal, can'tQuit work, but can carry out common charging to terminal by universal serial bus VBUS, fill ensureingElectricity can not stop because charger None-identified goes out quick charge request, has promoted the reliable of chargingProperty.
By above technical scheme, can realize the quick charge of charger to terminal, improve charging effectThe reliability of rate and charging.
Brief description of the drawings
Fig. 1 shows the connection diagram of terminal and charger in prior art;
Fig. 2 shows the connection diagram of terminal and charger according to an embodiment of the invention;
Fig. 3 shows the schematic block diagram of terminal according to an embodiment of the invention;
Fig. 4 shows the schematic block diagram of charger according to an embodiment of the invention;
Fig. 5 shows the schematic flow diagram of charging method according to an embodiment of the invention;
Fig. 6 shows the schematic flow diagram of charging method according to an embodiment of the invention.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attachedFigure and detailed description of the invention are further described in detail the present invention. It should be noted that, notIn the situation of conflict, the feature in the application's embodiment and embodiment can combine mutually.
Set forth in the following description a lot of details so that fully understand the present invention, still,The present invention can also adopt other to be different from other modes described here and implement, therefore, and the present inventionProtection domain be not subject to the restriction of following public specific embodiment.
Fig. 2 shows the connection diagram of terminal and charger according to an embodiment of the invention.
As shown in Figure 2, charger end DP and DM short circuit, terminal under default situations first by fillingElectrical equipment end DP and DM carry out the identification of conventional charger according to BC1.2 agreement. DCP has identifiedAfterwards, terminal is by different voltage request quick charges on IDpin, and DCP is by filling fastElectricity handshake logic has been responded shaking hands of quick charge request to the voltage on IDpin. Shake handsAfter completing, terminal and charger are switched to fast charge mode; If shaken hands unsuccessfully, terminal and fillingElectrical equipment rests on traditional charge mode.
In this technical scheme, the IDpin wiring in USB is to connect in USB wiringLead to, connect terminal and charger as signal identification line. Terminal is passed through IDpin wiring to chargerSend quick charge request, ask through the quick charge of IDpin wiring transmission when charger identifies terminalWhile asking, send quick charge request response to terminal, and voltage signal in identification id pin wiring withDetermine corresponding charging current, terminal receives the quick charge request response that charger is beamed back, and starts to fillElectricity. Like this, obtain different charging currents by the varying voltage signal in IDpin wiring, canObtain multiple charging rate, quick charge is achieved, greatly improved the efficiency of charging. When fillingElectrical equipment unidentified go out when the quick charge request of terminal, also can not quit work, but can pass throughVBUS pair of connecting wires terminal is carried out common charging, to ensure that charging can not go out because of charger None-identifiedQuick charge request and stopping, and then promoted the reliability of charging.
Fig. 3 shows the schematic block diagram of terminal according to an embodiment of the invention.
As shown in Figure 3, terminal 300 according to an embodiment of the invention, comprising: transmitting element302, be terminal while carrying out common charging at charger by USB, terminal is by reducingVoltage signal on signal identification line in USB please to send quick charge to chargerAsk; Judging unit 304, judges whether terminal receives the quick charge request sound from chargerShould; Control module 306, is that terminal receives quick charge request when response in judged result, controlsVoltage signal on signal identification line, so that described charger provides and described voltage letter for described terminalNumber corresponding target charging current, to carry out quick charge to terminal.
In this technical scheme, the signal identification line IDpin wiring in USB is at USBIn wiring, for what be communicated with, use the IDpin wiring being communicated with to connect terminal and charging as signal identification lineDevice, makes terminal pass through IDpin wiring and sends quick charge request to charger, fills when terminal receivesWhen the quick charge request that electrical equipment is beamed back responds, can by the voltage signal changing in IDpin wiringSelect different charging currents to charge. Like this, can promote charging by changing charging currentAbility, has improved the efficiency of charging greatly.
In technique scheme, preferably, also comprise: setting unit 308, according to what receiveOrder is set, multiple voltage signals are set, and the target charged electrical corresponding with each voltage signalStream, wherein, the current value inverse correlation of the magnitude of voltage of voltage signal and corresponding target charging current.
In this technical scheme, the voltage signal in IDpin wiring can pass through comparator or ADC(analog-digital converter) judges, different charging current value corresponding to voltage signal,When the voltage that applies in IDpin wiring is lower, the charging current obtaining is higher, for example, and magnitude of voltage1.8V, 1.5V, 1V and 0.5V be corresponding charging current 1A, 2A, 3A and 4A respectively.
Fig. 4 shows the schematic block diagram of charger according to an embodiment of the invention.
As shown in Figure 4, charger 400 according to an embodiment of the invention, comprising: judging unit402, in the time that the voltage signal on the signal identification line in USB reduces, according to chargerThe variation that whether can identify the voltage signal on the signal identification line in USB judges fillsElectrical equipment whether can identification terminal quick charge request; Transmit-Receive Unit 404, can know at chargerWhen other quick charge request, send quick charge and respond to terminal; Recognition unit 406, is sending soonSpeed charging responds to terminal, the voltage signal on identification signal identification line; Charhing unit 408, rootProvide the target charging current corresponding with voltage signal according to voltage signal for terminal, so that terminal is carried out soonSpeed charging.
In this technical scheme, the IDpin wiring in USB is to connect in USB wiringLead to, use the IDpin wiring being communicated with to connect terminal and charger as signal identification line, work as chargingDevice identify terminal through IDpin wiring send quick charge request time, to terminal send quick chargeRequest response, and voltage signal in identification id pin wiring to be to determine corresponding charging current, and openBegin to charge. Like this, obtain different charging currents by the varying voltage signal in IDpin wiring,Can obtain multiple charging rate, quick charge is achieved, greatly improve the efficiency of charging.
In technique scheme, preferably, judging unit 402 specifically for: when charger canWhen signal in identification USB is identified the variation of the voltage signal on line, judge that charger canWith the quick charge request of identification terminal; When the signal in charger None-identified USB is knownWhen the variation of the voltage signal on other line, judge the quick charge request of charger None-identified terminal.
In this technical scheme, charger is identified end by the voltage signal in identification id pin wiringThe quick charge request of end, the charging current of the different corresponding different sizes of voltage signal.
In technique scheme, preferably, charhing unit 408 also for: cannot know at chargerWhen other quick charge request, continue as terminal by USB and carry out common charging.
In this technical scheme, when charger is unidentified while going out the quick charge request of terminal, can'tQuit work, but can carry out common charging to terminal by universal serial bus VBUS, fill ensureingElectricity can not stop because charger None-identified goes out quick charge request, has promoted the reliable of chargingProperty.
In technique scheme, preferably, recognition unit 406 comprises: comparator or analog digitalConverter.
In this technical scheme, charger comes by comparator or ADC (analog-digital converter)Voltage signal in identification id pin wiring, different charging current value corresponding to voltage signal,When charger identifies voltage signal in IDpin wiring when lower, corresponding charging current is higher,For example, magnitude of voltage 1.8V, 1.5V, 1V and 0.5V corresponding charging current 1A, 2A, 3A respectivelyAnd 4A.
Fig. 5 shows the schematic flow diagram of charging method according to an embodiment of the invention.
As shown in Figure 5, charging method according to an embodiment of the invention, comprises the following steps:
Step 502, is terminal while carrying out common charging at charger by USB, terminalQuick to send to charger by the voltage signal on the signal identification line in reduction USBCharging request.
Step 504, when the voltage signal on the signal identification line in USB reduces, rootWhether can identify the variation of the voltage signal on the signal identification line in USB according to chargerJudge the quick charge request that charger whether can identification terminal, and judging that charger can knowWhen other quick charge request, send quick charge request and respond to terminal.
Step 506, in the time that terminal receives quick charge request response, on control signal identification lineVoltage signal, so that charger provides the target charging current corresponding with voltage signal for terminal, with rightTerminal is carried out quick charge.
In this technical scheme, the IDpin wiring in USB is to connect in USB wiringLead to, use the IDpin wiring being communicated with to connect terminal and charger as signal identification line. Terminal is logicalCross IDpin wiring and send quick charge request to charger, when charger identifies terminal through IDpinWhen quick charge request that wiring sends, send quick charge request response to terminal, and identification idVoltage signal in pin wiring is to determine corresponding charging current, and it is fast that terminal reception charger is beamed backSpeed charging request response, starts charging. Like this, obtain by the varying voltage signal in IDpin wiringTo different charging currents, can obtain multiple charging rate, quick charge is achieved, greatlyImprove the efficiency of charging.
In technique scheme, preferably, also comprise: what terminal basis received arranges order,Multiple voltage signals are set, and the target charging current corresponding with each voltage signal, wherein, electricityPress the magnitude of voltage of signal and the current value inverse correlation of corresponding target charging current.
In this technical scheme, it is different to select that user can arrange different voltage signals in terminalCharging current, controls charging rate, different charging current value corresponding to voltage signal,When the voltage that arranges in IDpin wiring is lower, the charging current obtaining is higher, for example, and magnitude of voltage1.8V, 1.5V, 1V and 0.5V be corresponding charging current 1A, 2A, 3A and 4A respectively.
In technique scheme, preferably, whether can identify according to charger in step 504The variation of the voltage signal on the signal identification line in USB judges that whether charger is passableThe quick charge request of identification terminal, specifically comprises: when in charger None-identified USBSignal identification line on the variation of voltage signal time, judge charger None-identified terminal fastCharging request; When charger can be identified the voltage signal on the signal identification line in USBVariation time, judge the quick charge request that charger can identification terminal.
In this technical scheme, charger is identified end by the voltage signal in identification id pin wiringThe quick charge request of end, the charging current of the different corresponding different sizes of voltage signal.
In technique scheme, preferably, in the time of charger None-identified quick charge request, fillElectrical equipment continues as terminal by USB and carries out common charging.
In this technical scheme, when charger is unidentified while going out the quick charge request of terminal, can'tQuit work, but can carry out common charging to terminal by universal serial bus VBUS, fill ensureingElectricity can not stop because charger None-identified goes out quick charge request, has promoted the reliable of chargingProperty.
Fig. 6 shows the schematic flow diagram of charging method according to an embodiment of the invention.
As shown in Figure 6, charging method according to an embodiment of the invention, comprises the following steps:
Step 602, charger is identified as common charging DCP. Do not receiving quick charge controlWhen order, charger acquiescence is identified as DCP, charger end DP and DM short circuit.
Step 604, after terminal access universal serial bus VBUS, terminal by charger end DP andDM carries out the identification of conventional charger according to BC1.2 agreement, charger is identified as to DCP.
Step 606, terminal is waited for 1s arranging after the charging current of 1A.
Step 608, reduces the voltage on IDpin, to send quick charge request to charger, andTime-out time is set.
Step 610, whether charger is according to can identification id pin voltage change judging whether passableIdentify this quick charge request, when voltage change on charger can identification id pin voltage,Can identify this quick charge request time, enter step 612, otherwise, step 602 returned to. When fillingElectrical equipment unidentified go out when the quick charge request of terminal, can't quit work, but return to step602, terminal is carried out to common charging, to ensure that charging can not go out because of charger None-identified fastCharging is asked and is stopped, and has promoted the reliability of charging.
Step 612, responds quick charge request, drags down IDpin and continues to release after 100msPut. Wherein, different charging current value corresponding to voltage signal arranges in IDpin wiringVoltage when lower, the charging current obtaining is higher, in the technical program, 1.5V correspondence is set2A, the corresponding 3A of 1V, the corresponding 4A of 0.5V.
Step 614, IDpin drags down and continues, after 100ms, to judge whether terminal is received in time-out timeTo the quick charge response of charger, when judged result is when being, enter step 618, otherwise, returnReturn step 606.
Step 616, charger is switched to corresponding fast charge mode.
Step 618, terminal is received quick charge request response, after wait 300ms, IDpin electricity is setPress corresponding charging current, be switched to fast charge mode.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical side of the present inventionCase, can realize the quick charge of charger to terminal, improves the reliability of charge efficiency and charging.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, forThose skilled in the art, the present invention can have various modifications and variations. All in essence of the present inventionWithin god and principle, any amendment of doing, be equal to replacement, improvement etc., all should be included in the present inventionProtection domain within.

Claims (10)

1. a terminal, is characterized in that, comprising:
Transmitting element, is described terminal while carrying out common charging at charger by USB, instituteState terminal by reducing voltage signal on signal in described USB identification line to fill to describedElectrical equipment sends quick charge request;
Judging unit, judges whether described terminal receives the quick charge request sound from described chargerShould;
Control module, is described terminal while receiving described quick charge request response in judged result, controlMake the voltage signal on described signal identification line, so that described charger provides and described electricity for described terminalPress target charging current corresponding to signal, so that described terminal is carried out to quick charge.
2. terminal according to claim 1, is characterized in that, also comprises:
Setting unit, according to the order that arranges receiving, arranges multiple voltage signals, and with each electricityPress target charging current corresponding to signal, wherein, the magnitude of voltage of described voltage signal fills with corresponding targetThe current value inverse correlation of electricity electric current.
3. a charger, is characterized in that, comprising:
Judging unit, in the time that the voltage signal on the signal identification line in USB reduces, according toWhether described charger can identify voltage signal on signal in described USB identification lineChange the quick charge request that judges that described charger whether can identification terminal;
Transmit-Receive Unit, in the time that described charger can be identified described quick charge request, sends quick chargeResponse is to described terminal;
Recognition unit, is sending quick charge response to described terminal, identifies on described signal identification lineVoltage signal;
Charhing unit, provides the order corresponding with described voltage signal according to described voltage signal for described terminalMark charging current, to carry out quick charge to described terminal.
4. charger according to claim 3, is characterized in that, described judging unit specifically for:
When described charger can be identified the voltage signal on the signal identification line in described USBVariation time, judge that described charger can identify the quick charge request of described terminal;
When the voltage signal on the signal identification line in USB described in described charger None-identifiedVariation time, judge the quick charge request of terminal described in described charger None-identified.
5. charger according to claim 3, is characterized in that,
Described charhing unit also for:
Described in described charger None-identified when quick charge request, continue by described USBContinue and carry out common charging for described terminal.
6. according to the charger described in any one in claim 3 to 5, it is characterized in that described identificationUnit comprises: comparator or analog-digital converter.
7. a charging method, is characterized in that, comprising:
Be terminal while carrying out common charging at charger by USB, described terminal is by reducingVoltage signal on signal identification line in described USB is to send and to fill fast to described chargerElectricity request;
When described voltage signal on signal identification line in described USB reduces, according to instituteState charger and whether can identify the change of the voltage signal on the signal identification line in described USBChange to judge whether described charger can identify the quick charge request of described terminal, and described in judgingWhen charger can be identified described quick charge request, send quick charge request response to described terminal;
In the time that described terminal receives described quick charge request response, control on described signal identification lineVoltage signal, so that described charger charges for described terminal provides the target corresponding with described voltage signalElectric current, to carry out quick charge to described terminal.
8. charging method according to claim 7, is characterized in that, also comprises:
Described terminal, according to the order that arranges receiving, arranges multiple voltage signals, and with each voltageThe target charging current that signal is corresponding, wherein, the magnitude of voltage of described voltage signal charges with corresponding targetThe current value inverse correlation of electric current.
9. charging method according to claim 7, is characterized in that, described according to described chargerThe variation that whether can identify the voltage signal on the signal identification line in described USB judgesWhether described charger can identify the quick charge request of described terminal, specifically comprises:
When the voltage signal on the signal identification line in USB described in described charger None-identifiedVariation time, judge the described quick charge request of terminal described in described charger None-identified;
When described charger can be identified the voltage signal on the signal identification line in described USBVariation time, judge that described charger can identify the described quick charge request of described terminal.
10. according to the charging method described in any one in claim 7 to 9, it is characterized in that,
Described in described charger None-identified when quick charge request, described charger is by described generalUniversal serial bus continues as described terminal and carries out common charging.
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