CN104158251A - Terminal, charger and charging method - Google Patents
Terminal, charger and charging method Download PDFInfo
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- CN104158251A CN104158251A CN201410400635.0A CN201410400635A CN104158251A CN 104158251 A CN104158251 A CN 104158251A CN 201410400635 A CN201410400635 A CN 201410400635A CN 104158251 A CN104158251 A CN 104158251A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a terminal, a charger and a charging method. The terminal comprises a request unit and a transmitting and receiving unit. The request unit sends a fast charging request to the charger according to a fast charging protocol when the charger charges the terminal in an ordinary way through a charging line in a universal serial bus. The transmitting and receiving unit receives a fast charging request response from the charger and sends a fast charging control command to the charger to control the charger to fast charge the terminal through the charging line. By adopting the technical scheme of the invention, the charging method can be compatible with a traditional means of charger identification, fast terminal charging by the charger is realized, and the problem of slow charging is solved.
Description
Technical field
The present invention relates to terminal technology field, in particular to a kind of terminal, a kind of charger and a kind of charging method.
Background technology
The terminals such as present mobile device (as mobile phone) are mainly to rely on the connection of charger end DP (Digital Positive) and DM (Digital Mimus) to carry out the identification to charger, as shown in Figure 1, in the time of charger end DP and DM short circuit, terminal can identify by charger end DP and DM the type of charger, as be identified as DCP (charging of standard wall), and start charging by universal serial bus VBUS.Along with the power consumption of current terminal is increasing, the capacity of its battery is also increasing, and conventional charger is just faced with the problems such as charge efficiency is low, spended time is long, in order to solve the slow problem of charging, has introduced quick charger.
But, can only rely on DP and DM short circuit to identify common wall mold filling formula at current charger, and terminal is carried out to common charging, None-identified quick charge request, also cannot carry out quick charge to terminal.
Therefore, how to make the quick charge request that charger can identification terminal, terminal is carried out to quick charge to improve charge efficiency, become 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 the quick charge request that charger can identification terminal, and terminal is carried out to quick charge, improves charge efficiency.
In view of this, an aspect of of the present present invention has proposed a kind of terminal, comprising: request unit is described terminal while carrying out common charging at charger by the charging wire in USB, sends quick charge request according to fast charge protocol to described charger; Transmit-Receive Unit, receives from the quick charge request response of described charger and to described charger and sends quick charge control command, carries out quick charge as described terminal to control described charger by described charging wire.
In this technical scheme, terminal sends quick charge request to charger, and receives the quick charge request response that charger feeds back after fast recognition charging request, and terminal is controlled charger after quick charge request response and carried out quick charge receiving.By the technical program, can make the RM of the compatible conventional charger of charger, and the quick charge request that identification terminal sends realizes the quick charge to terminal, solve the slow problem of charging.
In technique scheme, preferably, in described quick charge control command, comprise the required charging current of described terminal, provide real time charging electric current according to described charging current and the available maximum charging current of described charger for described terminal for described charger.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.Certainly, terminal can make charger switch different charge modes by different quick charge control commands, to obtain different charging currents.The fast charge mode corresponding to quick charge control command of terminal, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, also comprise: setting unit, voltage signal on first signal identification line DP in described USB and secondary signal identification line DM is set to zero, to send quick charge request by charger described in described first signal identification line and described secondary signal identification alignment.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
Another aspect of the present invention has proposed a kind of charger, comprising: the first receiving element is terminal while carrying out common charging at charger by USB, receives the quick charge request from described terminal; Judging unit, judges whether described charger can identify described quick charge request; Transmitting element, in the time judging that described charger can be identified described quick charge request, sends quick charge request response to described terminal; The second receiving element, sending after described quick charge request response, receives the quick charge control command from described terminal; Charhing unit is that described terminal is carried out quick charge according to described quick charge control command by described charging wire.
In this technical scheme, charger both can carry out common charging, and the quick charge request that also can send according to terminal is carried out quick charge and made response.By the technical program, RM that can compatible conventional charger, the quick charge request that also can make charger identification terminal send, realizes the quick charge of charger to terminal simultaneously, has solved the slow problem of charging.Realize the function of quick charge by simple structure, promoted the reliability of charging.
In technique scheme, preferably, in described quick charge control command, comprise the required charging current of described terminal, described charger also comprises: acquiring unit, obtain the required charging current of described terminal comprising in described quick charge control command, and unit is provided, provide real time charging electric current according to the required charging current of described terminal and the available maximum charging current of described charger for described terminal.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.The fast charge mode that quick charge control command is corresponding, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, also comprise: switching units, if detect, the voltage signal on first signal identification line DP and the secondary signal identification line DM in described USB is zero, disconnect described first signal identification line and identify being connected of line with described secondary signal, to receive described quick charge request and to send described quick charge request response by described first signal identification line and described secondary signal identification line.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
In technique scheme, preferably, described charhing unit also comprises: when described in described charger None-identified when quick charge request, continue as described terminal carry out common charging by described USB.
In this technical scheme, terminal is sent quick charge request by starting fast charge protocol to charger, and charger is enumerated, if enumerate failure, charge mode can be remained on to traditional charge mode.That is to say, charger unidentified go out when quick charge request, can't quit work, but can carry out common charging, to ensure that charging can not stop because None-identified goes out quick charge request, promoted the reliability of charging.
Of the present inventionly on the one hand proposed a kind of charging method again, having comprised: be described terminal while carrying out common charging at described charger by the charging wire in USB, according to fast charge protocol to described charger transmission quick charge request; Described charger receives the quick charge request from described terminal, and judges whether to identify described quick charge request; In the time that described charger can be identified described quick charge request, send quick charge request response to described terminal; Described terminal receives from the quick charge request response of described charger and sends quick charge control command to described charger; Described charger is that described terminal is carried out quick charge according to described quick charge control command by described charging wire.
In this technical scheme, terminal can send quick charge request to charger, and in the time of the quick charge request response that receives charger, sends quick charge control command and carry out quick charge taking control charger as terminal.And charger both can carry out common charging for terminal, the quick charge request that also can send according to terminal is made and is responded and be that it carries out quick charge.Pass through the technical program, can make the RM of the compatible conventional charger of charger, the quick charge request of simultaneously also can identification terminal sending, realize the quick charge of charger to terminal, promote the reliability of charging, realize the quick charge of charger to terminal, solved the slow problem of charging.
In technique scheme, preferably, in described quick charge control command, comprise the required charging current of described terminal, described charging method also comprises: described charger obtains the required charging current of described terminal comprising in described quick charge control command; And described charger provides real time charging electric current according to the required charging current of described terminal and the available maximum charging current of described charger for described terminal.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.The fast charge mode that quick charge control command is corresponding, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, voltage signal on first signal identification line in the described USB of described terminal and described secondary signal identification line is set to zero, to be sent quick charge request and to be received described quick charge request response by charger described in described first signal identification line and described secondary signal identification alignment; If described charger detects that the voltage signal on first signal identification line DP and the secondary signal identification line DM in described USB is zero, disconnect described first signal identification line and identify being connected of line with described secondary signal, to receive described quick charge request and to send described quick charge request response by described first signal identification line and described secondary signal identification line.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
In technique scheme, preferably, also comprise: in the time judging described in described charger None-identified quick charge request, described charger continues as described terminal by described USB and carries out common charging.
In this technical scheme, terminal is sent quick charge request by starting fast charge protocol to charger, and charger is enumerated, if enumerate failure, charge mode can remain on traditional charge mode.That is to say, charger unidentified go out when quick charge request, can't quit work, but can carry out common charging, to ensure that charging can not stop because None-identified goes out quick charge request, promoted the reliability of charging.
In technique scheme, preferably, described fast charge protocol is USB host agreement.
In this technical scheme, terminal is sent quick charge request by starting USB host agreement to charger, charger is enumerated, after enumeration succeeds, obtain the quick charge request response of charger, and send quick charge control command and be switched to corresponding fast charge mode.
By above technical scheme, can meet the quick charge demand of terminal, realized the function of quick charge by simple structure, improve charge efficiency, promote the reliability of charging, solve the slow problem of 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.
Embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is 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, ID wiring is vacant state, in the time that terminal is sent quick charge request according to fast charge protocol to charger, charger is enumerated, after enumeration succeeds, charger disconnects the connection of first signal identification line DP and secondary signal identification line DM according to quick charge handshake logic, and sends quick charge response to terminal, starts quick charge.
In terminal during without quick charge request, charger end DP and DM are in short circuit state, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge
By the technical program, the compatible RM of conventional charger, makes terminal send quick charge request by starting fast charge protocol to charger, and charger is enumerated, if enumerate failure, charge mode can be remained on to traditional charge mode.That is to say, charger unidentified go out when quick charge request, can't quit work, but can carry out common charging, to ensure that charging can not stop because None-identified goes out quick charge request, 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: request unit 302 is terminal while carrying out common charging at charger by the charging wire in USB, sends quick charge request according to fast charge protocol to charger; Transmit-Receive Unit 304, receives from the quick charge request response of charger and to charger and sends quick charge control command, carries out quick charge as terminal to control charger by charging wire.
In this technical scheme, terminal sends quick charge request to charger, and receives the quick charge request response that charger feeds back after fast recognition charging request, and terminal is controlled charger after quick charge request response and carried out quick charge receiving.By the technical program, RM that can compatible conventional charger, makes the quick charge request that terminal is sent be identified by charger, realizes the quick charge of charger to terminal, has solved the slow problem of charging.
In technique scheme, preferably, in quick charge control command, comprise the required charging current of terminal, provide real time charging electric current according to charging current and the available maximum charging current of charger for terminal for charger.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.Certainly, terminal can make charger switch different charge modes by different quick charge control commands, to obtain different charging currents.The fast charge mode corresponding to quick charge control command of terminal, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, also comprise: setting unit 306, voltage signal on first signal identification line DP in USB and secondary signal identification line DM is set to zero, to identify line DP and secondary signal identification line DM by first signal to charger transmission quick charge request.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
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: the first receiving element 402 is terminal while carrying out common charging at charger by USB, receives the quick charge request of self terminal; Judging unit 404, judges whether charger can ask in fast recognition charging; Transmitting element 406, judging that charger can fast recognition when charging request, sends quick charge request response to terminal; The second receiving element 408, is sending after quick charge request response, receives the quick charge control command of self terminal; Charhing unit 410, carries out quick charge according to quick charge control command to terminal.
In this technical scheme, charger both can carry out common charging, and the quick charge request that also can send according to terminal is carried out quick charge and made response.By the technical program, RM that can compatible conventional charger, the quick charge request that also can make charger identification terminal send, realizes the quick charge of charger to terminal simultaneously, has solved the slow problem of charging.Realize the function of quick charge by simple structure, promoted the reliability of charging, realized the quick charge of charger to terminal, solved the slow problem of charging.
In technique scheme, preferably, in quick charge control command, comprise the required charging current of terminal, charger also comprises: acquiring unit 412, obtain the required charging current of terminal comprising in quick charge control command, and unit 414 is provided, provide real time charging electric current according to the required charging current of terminal and the available maximum charging current of charger for terminal.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.The fast charge mode that quick charge control command is corresponding, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, also comprise: switching units 416, if detect, the voltage signal on first signal identification line DP and the secondary signal identification line DM in USB is zero, disconnect first signal identification line DP and identify being connected of line DM with secondary signal, receive quick charge request and transmission quick charge request response to identify line DP and secondary signal identification line DM by first signal.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
In technique scheme, preferably, charhing unit 410 also comprises: in the time of charger None-identified quick charge request, continue as terminal carry out common charging by USB.
In this technical scheme, terminal is sent quick charge request by starting fast charge protocol to charger, and charger is enumerated, if enumerate failure, charge mode can be remained on to traditional charge mode.That is to say, charger unidentified go out when quick charge request, can't quit work, but can carry out common charging, to ensure that charging can not stop because None-identified goes out quick charge request, promoted the reliability of charging.
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 the charging wire in USB, sends quick charge request according to fast charge protocol to charger.
Step 504, charger receives the quick charge request of self terminal, and judges whether fast recognition charging to ask.
Step 506, can fast recognition when charging request at charger, sends quick charge request response to terminal.
Step 508, terminal receives from the quick charge request response of charger and sends quick charge control command to charger.
Step 510, charger carries out quick charge according to quick charge control command to terminal.
In this technical scheme, terminal can send quick charge request to charger, and in the time of the quick charge request response that receives charger, sends quick charge control command and carry out quick charge taking control charger as terminal.And charger both can carry out common charging for terminal, the quick charge request that also can send according to terminal is made and is responded and be that it carries out quick charge.Pass through the technical program, can make the RM of the compatible conventional charger of charger, the quick charge request of simultaneously also can identification terminal sending, realize the quick charge of charger to terminal, promote the reliability of charging, realize the quick charge of charger to terminal, solved the slow problem of charging.
In technique scheme, preferably, in quick charge control command, comprise the required charging current of terminal, charging method also comprises: charger obtains the required charging current of terminal comprising in quick charge control command; And charger provides real time charging electric current according to the required charging current of terminal and the available maximum charging current of charger for terminal.
In this technical scheme, terminal can be sent quick charge control command according to self required charging current, but charger need be that terminal is charged according to maximum charging current, particularly, in the time that the required charging current of described terminal is greater than the maximum charging current of described charger, charge taking described maximum charging current as described terminal, in the time that the required charging current of described terminal is less than the maximum charging current of described charger, taking the required charging current of described terminal as terminal charge.Such as, the available maximum charging current of charger is 4A, so, as long as the required charging current of terminal self does not exceed 4A, charger will be taking the required charging current of terminal as terminal charge, but in the time that the required charging current of terminal is 5A, now, charger will charge taking its maximum charging current 4A as terminal.The fast charge mode that quick charge control command is corresponding, include but not limited to following several: the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
In technique scheme, preferably, voltage signal on first signal identification line DP in terminal USB and secondary signal identification line DM is set to zero, sends quick charge request and reception quick charge request response to identify line DP and secondary signal identification line DM by first signal to charger; If charger detects that the voltage signal on first signal identification line DP and the secondary signal identification line DM in USB is zero, disconnect first signal identification line DP and identify being connected of line DM with secondary signal, receive quick charge request and transmission quick charge request response to identify line DP and secondary signal identification line DM by first signal.
In this technical scheme, under default situations, first signal identification line DP and secondary signal identification line DM short circuit, charger is identified as conventional charger by terminal, according to BC1.2 agreement to charge compared with jogging speed, in the time that terminal first signal is identified voltage signal on line DP and secondary signal identification line DM and is set to zero, charger will disconnect being connected between first signal identification line DP and secondary signal identification line DM, so that terminal sends quick charge request according to fast charge protocol to charger, thereby carries out quick charge.By the technical program, the compatible RM of conventional charger, makes the quick charge request that terminal is sent be identified by charger, to realize the quick charge of charger to terminal.
In technique scheme, preferably, also comprise: in the time judging charger None-identified quick charge request, charger continues as terminal by USB and carries out common charging.
In this technical scheme, terminal is sent quick charge request by starting fast charge protocol to charger, and charger is enumerated, if enumerate failure, charge mode can remain on traditional charge mode.That is to say, charger unidentified go out when quick charge request, can't quit work, but can carry out common charging, to ensure that charging can not stop because None-identified goes out quick charge request, promoted the reliability of charging.
In technique scheme, preferably, fast charge protocol is USB host agreement.
In this technical scheme, terminal is sent quick charge request by starting USB host agreement to charger, charger is enumerated, after enumeration succeeds, obtain the quick charge request response of charger, and send quick charge control command and be switched to corresponding fast charge mode.
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.In the time not receiving quick charge control command, charger acquiescence is identified as DCP, the DP of charger and DM short circuit.
Step 604, after terminal access universal serial bus VBUS, terminal is carried out conventional charger by charger end DP and DM identification according to BC1.2 agreement, is identified as DCP by charger.
Step 606, terminal is waited for 1s arranging after the charging current of 1A.
Step 608, terminal starts USB host protocol stack, initiates to enumerate flow process.Be that terminal is sent quick charge request by starting USB host agreement to charger, charger is enumerated, wherein, fast charge protocol is that USB host agreement is fast charge protocol.Initiate to enumerate after flow process at mobile phone, the DP of charger and DM maintain 0V state 10ms, to disconnect the connection of DP and DM.
Step 610, charger receives quick charge request, judges whether self supports quick charge, when judged result is when being, enters step 612, otherwise, return to step 602.
Step 612, charger responds quick charge request, by USB chirp K signal, quick charge request is responded.
Step 614, judges whether terminal receives that in time-out time the quick charge request of charger responds, and when judged result is when being, enters step 616, otherwise, return to step 606.
Step 616, terminal is carried out the follow-up flow process of enumerating, and is sent quick charge control command to charger after receiving that the quick charge request of charger is responded.Different charge mode corresponding to quick charge control command, such as, the charging current that general mode (normal mode) is corresponding is 1A, the charging current that middle model (medial mode) is corresponding is 2A, the charging current that fast charge mode (fast mode) is corresponding is 3A, and charging current corresponding to super mode (super mode) is 4A.
Step 618, charger is switched to corresponding fast charge mode receiving after quick charge control command.
Step 620, terminal enters fast charge mode.
In the present invention, the only object for describing of term " first ", " second ", and can not be interpreted as instruction or hint relative importance.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, can have made charger meet the quick charge demand of terminal, realize the function of quick charge, this has improved charge efficiency, has promoted the reliability of charging, and has solved the slow problem of charging.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a terminal, is characterized in that, comprising:
Request unit, is described terminal while carrying out common charging at charger by the charging wire in USB, sends quick charge request according to fast charge protocol to described charger;
Transmit-Receive Unit, receives from the quick charge request response of described charger and to described charger and sends quick charge control command, carries out quick charge as described terminal to control described charger by described charging wire.
2. terminal according to claim 1, it is characterized in that, in described quick charge control command, comprise the required charging current of described terminal, provide real time charging electric current according to described charging current and the available maximum charging current of described charger for described terminal for described charger.
3. terminal according to claim 1 and 2, is characterized in that, also comprises:
Setting unit, the voltage signal on the first signal identification line in described USB and secondary signal identification line is set to zero, to send quick charge request by charger described in described first signal identification line and described secondary signal identification alignment.
4. a charger, is characterized in that, comprising:
The first receiving element, is terminal while carrying out common charging at described charger by the charging wire in USB, receives the quick charge request from described terminal;
Judging unit, judges whether described charger can identify described quick charge request;
Transmitting element, in the time judging that described charger can be identified described quick charge request, sends quick charge request response to described terminal;
The second receiving element, sending after described quick charge request response, receives the quick charge control command from described terminal;
Charhing unit is that described terminal is carried out quick charge according to described quick charge control command by described charging wire.
5. charger according to claim 4, is characterized in that, comprises the required charging current of described terminal in described quick charge control command, and described charger also comprises:
Acquiring unit, obtains the required charging current of described terminal comprising in described quick charge control command, and
Unit is provided, provides real time charging electric current according to the required charging current of described terminal and the available maximum charging current of described charger for described terminal.
6. charger according to claim 4, is characterized in that, also comprises:
Switching units, if detect, the voltage signal on first signal identification line and the secondary signal identification line in described USB is zero, disconnect described first signal identification line and identify being connected of line with described secondary signal, to receive described quick charge request and to send described quick charge request response by described first signal identification line and described secondary signal identification line.
7. according to the charger described in any one in claim 4 to 6, it is characterized in that, described charhing unit also comprises:
When described in described charger None-identified when quick charge request, continue as described terminal by described USB and carry out common charging.
8. a charging method, is characterized in that, comprising:
Be terminal while carrying out common charging at charger by the charging wire in USB, send quick charge request according to fast charge protocol to described charger;
Described charger receives the quick charge request from described terminal, and judges whether to identify described quick charge request;
In the time that described charger can be identified described quick charge request, send quick charge request response to described terminal;
Described terminal receives from the quick charge request response of described charger and sends quick charge control command to described charger;
Described charger, according to described quick charge control command, is that described terminal is carried out quick charge by described charging wire.
9. charging method according to claim 8, is characterized in that, comprises the required charging current of described terminal in described quick charge control command, and described charging method also comprises:
Described charger obtains the required charging current of described terminal comprising in described quick charge control command; And
Described charger provides real time charging electric current according to the required charging current of described terminal and the available maximum charging current of described charger for described terminal.
10. charging method according to claim 8, is characterized in that,
Voltage signal on first signal identification line in the described USB of described terminal and secondary signal identification line is set to zero, to be sent quick charge request and to be received described quick charge request response by charger described in described first signal identification line and described secondary signal identification alignment;
If described charger detects that the voltage signal on first signal identification line and the secondary signal identification line in described USB is zero, disconnect described first signal identification line and identify being connected of line with described secondary signal, to receive described quick charge request and to send described quick charge request response by described first signal identification line and described secondary signal identification line.
11. charging methods according to claim 8, is characterized in that, also comprise:
In the time judging described in described charger None-identified quick charge request, described charger continues as described terminal by described USB and carries out common charging.
Charging method in 12. according to Claim 8 to 11 described in any one, is characterized in that,
Described fast charge protocol is USB host agreement.
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