CN107404133A - Charging method, charger and terminal - Google Patents

Charging method, charger and terminal Download PDF

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Publication number
CN107404133A
CN107404133A CN201610343717.5A CN201610343717A CN107404133A CN 107404133 A CN107404133 A CN 107404133A CN 201610343717 A CN201610343717 A CN 201610343717A CN 107404133 A CN107404133 A CN 107404133A
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CN
China
Prior art keywords
terminal
charger
data line
charging
usb interface
Prior art date
Application number
CN201610343717.5A
Other languages
Chinese (zh)
Inventor
龚勇
Original Assignee
中兴通讯股份有限公司
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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to CN201610343717.5A priority Critical patent/CN107404133A/en
Publication of CN107404133A publication Critical patent/CN107404133A/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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 charging method, charger and terminal, the charging method includes:Whether the access device that the terminal recognition inserts its USB interface is matching quick charger;When it is matching quick charger to recognize the access device for inserting its USB interface, at least one in the correction data line or negative data line is connected to the power line by the terminal;Perform charging input operation.Apply the technical scheme of the present invention, charging current can be increased under the premise of equal line loss and realize more quickly charging, or the line loss caused by high current can also be reduced in USB charging processes under the premise of the equal charging current.

Description

Charging method, charger and terminal

Technical field

The present invention relates to charging technique field, more particularly to a kind of charging method, charger and terminal.

Background technology

With the increase of the cell capacity of portable apparatus such as terminal, in order to shorten the charging interval of terminal, go out More quick charging method is showed.After terminal is adapted to charger, by increasing charger Output voltage or output current, to improve the charging input power of terminal, so as to bent in the charging of battery Line scope improves the charging current of battery, reaches and shortens charging interval purpose.

Realized by increasing output voltage in increase power output mode, can typically pass through charging chip It is the charging voltage for meeting battery charging by Power convert;But during voltage conversion is carried out, efficiency Relatively low, the heating of charging chip in addition causes output current to limit.

Realized by increasing output current in increase power output mode, typically can be according to the pressure of circuit The output voltage of lifting charger is dropped so that all-mains high current can be charged directly to battery. Charging modes efficiency high of this mode than increasing output voltage.At present, charging process is all to pass through USB Interface VBUS power lines transmit electric current, and conventional cable can not be used for the charging of high current mode, when When electric current is more than 1.8A, the USB interface and charge cable of terminal need specific customization, so as to limit The use of which.High current transmits the loss that can increase circuit, reduces charge efficiency.

The content of the invention

It is an object of the invention to provide a kind of charging method, charger and terminal, in equal line loss Under the premise of increase charging current and realize more quickly charging, or reduced under the premise of equal charging current In USB charging processes caused by high current line loss.

In order to solve the above technical problems, the invention provides a kind of charging method, it is described applied to terminal The USB interface of terminal includes:Power line, correction data line and negative data line, including:

Whether the access device that the terminal recognition inserts its USB interface is matching quick charge Device;

It is described when it is matching quick charger to recognize the access device for inserting its USB interface At least one in the correction data line or negative data line is connected to the power line by terminal;

Perform charging input operation.

Wherein, whether the access device that the terminal judges to insert its USB interface is matching quick The step of charger, includes:

When detecting that the access device inserts the USB interface, the terminal performs quick charge and known It Zhun Bei not operate, and charger recognition and verification order is initiated to the access device;

When receiving the recognition and verification signal of the access device, the terminal thinks to insert the USB The access device of interface is matching quick charger.

Wherein, when one in the correction data line or negative data line is connected to the power supply by the terminal After line, during the execution charging input operation, methods described also includes:The terminal makes With remaining data lines in the correction data line or negative data line by charge control information transfer to described Quick charger;And/or;

It is described before the correction data line and negative data line are all connected to the power line by the terminal Method also includes:The terminal gives charge control information transfer to the quick charger.

Present invention also offers a kind of charging method, applied to charger, the USB interface of the charger Including:Power line, correction data line and negative data line, including:

Whether the terminal that its USB interface is inserted in the charger identification is that matching quick charge is whole End;

It is described to fill when it is matching quick charge terminal to recognize the terminal for inserting its USB interface At least one in the correction data line or negative data line is connected to the power line by electrical equipment;

Perform charging output operation.

Wherein, whether the terminal that its USB interface is inserted in charger identification is matching quick fill The step of electric terminals, including:

When detecting that the terminal inserts the USB interface, the charger performs quick charge identification Prepare operation;

When receiving the charger recognition and verification order that the terminal is sent, the charger is thought to insert The terminal of the USB interface is matching terminal, while returns to recognition and verification signal to the end End.

Wherein, when one in the correction data line or negative data line is connected to the electricity by the charger After the line of source, during the execution charging output operation, methods described also includes:The charging Device is transmitted using remaining data lines in the correction data line or negative data line to receive the terminal Charge control information;And/or;

Before the correction data line and negative data line are all connected to the power line by the charger, institute Stating method also includes:The charger receives the charge control information that the terminal transmits.

In order to solve the above-mentioned technical problem, present invention also offers a kind of terminal, comprising:

Charge Management unit, whether the access device that its USB interface is inserted for identifying is matching Quick charger;

Controlling switch, for identifying that the access device for inserting its USB interface is in the Charge Management unit During matching quick charger, by the correction data line or negative data line of the terminal USB interface At least one power line for being connected to the terminal USB interface;

Charge converting unit, for when the controlling switch by the correction data line or negative data line extremely Few one is connected to after the power line, performs charging input operation.

Wherein, the Charge Management unit is specifically used for:

When detecting that the access device inserts the USB interface, the controlling switch is controlled by described in Correction data line and negative data line are connected to the Charge Management unit, prepare behaviour to perform quick charge identification Make, and charger recognition and verification order is initiated to the access device;

And when receiving the recognition and verification signal of the access device, then it is assumed that insert the USB and connect The access device of mouth is matching quick charger.

Wherein, the Charge Management unit, it is additionally operable to do not receiving the recognition and verification of the access device During signal, detect whether the access device is charger;

The charging converting unit, for detecting that the access device is to fill in the Charge Management unit During electrical equipment, charging input operation is performed;

The controlling switch, for detecting that the equipment is not charger in the Charge Management unit When, the correction data line and negative data line are connected to the usb protocol process chip of the terminal, so that The terminal performs usb protocol operation.

Wherein, one in the correction data line or negative data line is connected in the controlling switch described After power line, during the charging converting unit performs charging input operation, the Charge Management Unit is using remaining one in the correction data line or negative data line by charge control information transfer to described Quick charger;And/or;

After the correction data line and negative data line are connected to the power line by the controlling switch, institute Before stating the recognition and verification signal that Charge Management unit receives the equipment, the Charge Management unit is also For giving charge control information transfer to the quick charger.

Correspondingly, present invention also offers a kind of charger, including:

Charge Management unit, whether the terminal that its USB interface is inserted for identifying is matching quick Charging terminal;

Controlling switch, for when the Charge Management unit recognize insert its USB interface terminal be with Matching quick charge terminal when, at least one in the correction data line or negative data line is connected to The power line;

Power output unit, for when the controlling switch by the correction data line or negative data line extremely Few one is connected to after the power line, performs charging output operation.

Wherein, the Charge Management unit is specifically used for:

When detecting that the terminal inserts the USB interface, the controlling switch is controlled by the positive number The Charge Management unit is connected to according to line and negative data line, prepares operation to perform quick charge identification; And

When receiving the charger recognition and verification order that the terminal is sent, it is believed that insert the USB and connect The terminal of mouth is matching quick charge terminal, and returns to recognition and verification signal to the terminal;With And

When not receiving the charger recognition and verification order that the terminal is sent in preset time threshold, It is not matching quick charge terminal to think the terminal for inserting the USB interface, controls the control The correction data line and negative data line are connected to preset mode by switch, so that the charger is default at this It is the terminal charge of the insertion USB interface under pattern.

Wherein, one in the correction data line or negative data line is connected in the controlling switch described After power line, during the power output unit performs charging output operation, the Charge Management Unit is additionally operable to transmit to receive the terminal by remaining one in the correction data line or negative data line Charge control information;And/or

After the correction data line and negative data line are connected to the power line by the controlling switch, institute State Charge Management unit and be sent to the recognition and verification signal to after the terminal, the Charge Management list Member is additionally operable to receive the charge control information that the terminal transmits.

The beneficial effects of the invention are as follows:

More than method and apparatus, charger to terminal when exporting charging current, except can rely on VBUS Beyond line, one or two in D+ lines or D- lines is may also rely on, i other words in the past by quickly filling Electrical equipment is transferred to the electric current of terminal by VBUS lines, now at least can by VBUS lines, and One or two in D+ lines or D- lines is transmitted, so can be under the premise of equal line loss Increase charging current and realize more quickly charging, or can also be reduced under the premise of equal charging current In USB charging processes caused by high current line loss.

Brief description of the drawings

Fig. 1 is the schematic flow sheet of the first embodiment of the charging method of the present invention;

Fig. 2 is the schematic flow sheet of S101 embodiment in Fig. 1;

Fig. 3 is the schematic flow sheet of the second embodiment of the charging method of the present invention;

Fig. 4 is the schematic flow sheet of the 3rd embodiment of the charging method of the present invention;

Fig. 5 is the schematic flow sheet of the fourth embodiment of the charging method of the present invention;

Fig. 6 is the schematic flow sheet of S501 embodiment in Fig. 5;

Fig. 7 is the schematic flow sheet of the 5th embodiment of the charging method of the present invention;

Fig. 8 is the schematic flow sheet of the sixth embodiment of the charging method of the present invention;

Fig. 9 is the structural representation of the embodiment of the terminal of the present invention;

Figure 10 is the structural representation of the embodiment of the charger of the present invention;

Figure 11-Figure 16 is the charging principle figure of the present invention.

Embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this hair Bright each embodiment is explained in detail.However, it will be understood by those skilled in the art that In each embodiment of the present invention, in order that reader more fully understands the application and to propose many technologies thin Section.But even if without these ins and outs and many variations based on following embodiment and modification, Each claim of the application technical scheme claimed can also be realized.

During being charged, two parts of charger and terminal are generally included.Charger passes through Battery of the USB cable power output to terminal, therefore, it is necessary to charger and terminal in charging process Cooperate, so as to realize to terminal charge.Based on above-mentioned understanding, the present invention proposes a kind of charging side Method, charger and terminal.Below, will be described in detail by specific embodiment.

Fig. 1 is refer to, is the schematic flow sheet of the first embodiment of the charging method of the present invention.Fig. 1 institutes The embodiment shown, charging process will be described from end side.The USB interface of the terminal includes:Power line (after Text is referred to as VBUS lines), correction data line (being hereinafter D+ lines), negative data line it is (simple hereinafter Referred to as D- lines) and ground wire (i.e. GND lines).Specifically, the charging method of the embodiment of the present invention, It is comprised the following steps:

S101, whether the access device that terminal recognition inserts its USB interface is matching quick fill Electrical equipment.

Wherein, the purpose access device for inserting its USB interface being identified in S101 is:Judge Terminal what operation of the execution in next step, if recognizing the access device for inserting its USB interface as therewith During the quick charger matched somebody with somebody, then terminal is needed to perform S105, and connecing for its USB interface is inserted if recognizing When to enter equipment be not matching quick charger, terminal is further again to be detected, next to judge The operation of step.

Specifically, whether terminal is matching quick in the access device that its USB interface is inserted in identification During charger, i.e., when performing S101, as shown in Fig. 2 may include steps of:

S1011, when detecting the USB interface of access device insertion terminal, terminal, which performs, quickly fills Electricity identification prepares operation, and initiates charger recognition and verification order to access device;

In this step, the charger recognition and verification order that terminal is initiated to equipment for example can be:Voltage is drawn Recognition command that is high or dragging down.

S1012, when receiving the recognition and verification signal of the access device, terminal thinks to insert its USB The access device of interface is matching quick charger.

Terminal recognition to insert its USB interface access device be matching quick charger, i.e., When terminal is adapted to quick charger, then after performing S105, then S103 is performed;Terminal recognition to insert When the access device for entering its USB interface is not matching quick charger, as terminal is set to access After preparation plays charger recognition and verification order, the recognition and verification signal of access device return is not received by When, terminal then thinks that the access device for inserting its USB interface is not matching quick charger, i.e., When terminal is not adapted to quick charger, S102-S104 is now then performed.

S102, whether terminal detection access device is charger;

In this step, terminal is not adapted to success with quick charger, and terminal needs detection insertion USB to connect Whether the equipment of mouth is in general charger, such as meets the charger of certain preset mode, such as BC1.2 The charger of agreement.If access device is charger, S103 is performed;If access device is not charger, Then perform S104;

S103, terminal perform charging input operation;

This step performs normal charge operation, such as uses any charging modes of the prior art, After charging complete, this charging process terminates.

S104, then terminal execution usb protocol operation.

In this step, terminal detects that the access device of insertion is not charger, then terminal is needed its D+ Line and D- lines are connected to the usb protocol process chip of terminal, to perform usb protocol operation.

At least one in D+ lines or D- lines is connected to VBUS lines by S105, terminal;

In S105, terminal connects one or two in the D+ lines or D- lines on its USB interface Onto VBUS lines, correspondingly, now matching quick charger is also by its USB interface One or two in D+ lines or D- lines is connected on VBUS lines, and is connected to VBUS's with terminal D+ lines or D- line options are the same.Now, S103 can be performed between terminal and quick charger, i.e., Charging input operation, during S103 is performed, can use VBUS lines and D+ lines or D- One or two in line carries out electric current transmission.Filled with VBUS lines transmission electric current is used only at present The technical scheme of electricity is compared, the quick charger of the embodiment of the present invention when exporting charging current to terminal, In addition to it can rely on VBUS lines, one or two in D+ lines or D- lines is may also rely on, is It is transferred to the electric current of terminal before saying by VBUS lines by quick charger, can at least passes through now One or two in VBUS lines, and D+ lines or D- lines is transmitted, so can be equal Increase charging current under the premise of line loss and realize more quickly charging, or can also be in equal charging electricity Under the premise of stream reduce USB charging processes in caused by high current line loss.Such as, according to horse-power formula, Line loss when VBUS lines transmission charging current being used only in the prior art is P=I2×R;Work as use During the same charging current of the scheme transmission of the embodiment of the present invention, if using VBUS lines and D+ lines, or When VBUS lines and D- lines are to transmit electric current, line loss now is P '=2 × (I/2)2× R=1/2 × I2× R=P/2, i.e. total line loss are the half of prior art;If use VBUS lines, and D+ lines Electric current is transmitted with D- lines, then line loss now is P "=3 × (I/3)2× R=1/3 × I2× R=P/3, I.e. total line loss is the half 1/3 of prior art.

It should be noted that when terminal using its VBUS line and D+ lines to transmit electric current when, charging During, the communication modes of D- lines are changed to single-wire communication mode, and terminal can use D- lines to charge and control Information transfer processed is to quick charger, until charging terminates;When transmitting electric current in VBUS lines and D- lines When, in charging process, the communication modes of D+ lines are changed to single-wire communication mode, and terminal can use D+ lines to quick charger, terminate charge control information transfer until charging.Wherein, the charging of transmission Control information can for example include:The battery capacity of terminal, current conditions etc..

When terminal using its VBUS line, D+ lines and D- lines to transmit electric current when, in charging process, Because D+ lines and D- lines are used for transmitting electric current, therefore, D+ lines and D- lines are being all connected to VBUS Before line, terminal can be in advance by charge control information transfer to quick charger.

Below, the differentiation to charger of end side by Fig. 3 and Fig. 4, will be described in detail and charged Journey.

As shown in figure 3, when the USB interface of terminal has access device insertion (S301), terminal performs fast Speed charging identification prepares operation (S302), initiates charger recognition and verification order (S303).Terminal detects whether The recognition and verification signal (S304) of access device return is received, it is true in the identification for receiving access device return To recognize after signal, D+ lines are connected to the VBUS lines of insertion terminal by terminal, while by D- lines communication side Formula is changed to single-wire communication mode (S305), and starts charging input operation, is charged (S306) to battery. And charge control information is transmitted to charger by D-, judge whether charging terminates (S307).Tied in charging After beam, stop charging (S308).

When do not receive access device return recognition and verification signal, terminal detection access device whether be not The charger (S309) of BC1.2 agreements.Terminal check access device be meet equipment be meet BC1.2 association The charger of view, start charging conversion, perform normal charge operation, charged to battery until terminating. After the completion of to be charged, charging terminates (S308).If access device nor the charger of BC1.2 agreements, Terminal then performs usb protocol operation, and D+ lines and the switching of D- lines are connected into usb protocol process chip (S310).The present embodiment is in charging process, due to transmitting electric current using VBUS lines and D+ lines, with Line loss when VBUS lines transmission charging current being used only in the prior art is P=I2× R is compared, and is made Line loss during charging current same with the scheme transmission of the embodiment of the present invention is P '=2 × (I/2)2× R= 1/2×I2× R=P/2, i.e. total line loss are the half of prior art;Or in equal total total line Quickly charging can be achieved under the premise of loss identical, charging current is that VBUS lines are used only to transmit charging 1.4 times during electric current;Or as the every line loss with VBUS lines on the premise of, it is possible to achieve 2 times of the charging current that charging current is transmitted for only VBUS lines.

As shown in figure 4, the workflow of terminal is roughly the same with the workflow of terminal in Fig. 3 in Fig. 4, Uniquely differ only in, terminal switches D+ lines and D- lines after recognition and verification signal is received It is connected to VBUS lines, i.e. Fig. 3 and Fig. 4's differs only in S405.The present embodiment in charging process, Due to transmitting electric current using VBUS lines, D+ lines and D- lines, with VBUS is used only in the prior art Line loss during line transmission charging current is P=I2× R is compared, and is passed using the scheme of the embodiment of the present invention Line loss during defeated same charging current is P "=3 × (I/3)2× R=1/3 × I2× R=P/3, i.e. bus Path loss consumption is the half 1/3 of prior art;Or realized under the premise of identical is lost in total line quick Charging, charging current are 1.7 times when VBUS lines transmission charging current is used only;Or in every line Path loss consume and as VBUS lines on the premise of, it is possible to achieve charging current be using only VBUS lines transmission 3 times during charging current.

Fig. 5 is refer to, is the schematic flow sheet of the fourth embodiment of charging method provided by the invention.Figure Embodiment shown in 5, charging process will be described from charger side, its with the embodiment shown in Fig. 1 End side description is mutually corresponding.The USB interface of the charger includes:Power line (is hereinafter VBUS Line), correction data line (being hereinafter D+ lines), negative data line (being hereinafter D- lines) and Ground wire (i.e. GND lines).Specifically, the charging method of the embodiment of the present invention, it is comprised the following steps:

S501, whether the terminal that its USB interface is inserted in charger identification is matching quick charge Terminal;

Wherein, the purpose that the equipment for inserting its USB interface is identified charger in S501 is:Sentence Disconnected charger this how output current;If it is matching fast to recognize and insert the terminal of its USB interface During fast charging terminal, then charger performs S502-S503;If recognize the equipment for inserting its USB interface When not being matching quick charge terminal, then S504 is performed, S504 is corresponding with S104, charger Then it is entered as certain preset mode, such as BC1.2 protocol modes under the preset mode to terminal Row charging is until terminate.

Specifically, whether charger is matching quick fill in the terminal that its USB interface is inserted in identification During electric terminals, that is, when performing S501, as shown in fig. 6, specifically may include steps of:

S5011, when detecting that terminal inserts its USB interface, it is accurate that charger performs quick charge identification Standby operation;

S5012, when receiving the charger recognition and verification order that terminal is sent in preset time threshold, The terminal that charger is thought to insert its USB interface is matching quick charge terminal, while returns to knowledge Other confirmation signal gives the terminal.

It is understood that S5011-S5012 is corresponding with S1011-S1012, by the corresponding step, It can quickly judge whether be adapted to each other between terminal and charger.

Charger recognize insert its USB interface equipment be matching quick charge terminal when, When i.e. terminal is adapted to charger, then S502-S303 is performed;Charger recognize insert its USB connect When the equipment of mouth is not matching quick charge terminal, as charger does not have in preset time threshold The charger recognition and verification order that terminal is sent is received, then charger thinks that terminal is not matching fast Fast charging terminal, now charger without feedback identifying confirmation signal to terminal, i.e. terminal and charger When not being adapted to, S504 is now then performed.

S502, charger connect at least one in the correction data line or negative data line of its USB interface To its power line.

S503, perform charging output operation.

It is corresponding with S105, S103 with S502-S503, insert its USB interface when charger recognizes When terminal is matching quick charge terminal, it is necessary to by the D+ lines or D- lines of its USB interface At least one is connected on its VBUS line.Correspondingly, now matching quick charge terminal also will One or two in D+ lines or D- lines on its USB interface is connected on VBUS lines, and and terminal The D+ lines or D- line options for being connected to VBUS are the same.Now, between terminal and charger Realize quick charging operations, i.e. then use its VBUS line for charger, and D+ lines or One or two in D- lines exports charging current to terminal;It is then used for quick charge terminal One or two in VBUS lines, and D+ lines or D- lines receives the charging current of charger output. Compared with technical scheme of the current VBUS lines transmission electric current to realize charging, the charging of the embodiment of the present invention Device in addition to it can rely on VBUS lines, may also rely on D+ lines when exporting charging current to terminal Or one in D- lines or two, i other words the electric current of terminal is transferred to by VBUS lines in the past, now At least can be by VBUS lines, and one or two in D+ lines or D- lines is transmitted, this Sample can circuit damages caused by high current in reduction USB charging processes under the premise of equal charging current Consumption.Such as, according to horse-power formula, circuit during charging current is transmitted using only VBUS lines in the prior art It is lost as P=I2×R;When the same charging current of the scheme transmission using the embodiment of the present invention, if using VBUS lines and D+ lines, or when VBUS lines and D- lines are to transmit electric current, line loss now is P ' =2 × (I/2)2× R=1/2 × I2× R=P/2, i.e. total line loss are the half of prior art;If use VBUS lines, and D+ lines and D- lines transmit electric current, then line loss now is P " =3 × (I/3)2× R=1/3 × I2× R=P/3, i.e. total line loss are the half 1/3 of prior art.Or When ensureing same line loss, if using VBUS lines and D+ lines, or VBUS lines and D- lines transmit During charging current, the charging current of transmission is 1.4 times that charging current is transmitted using only VBUS lines;If Using VBUS lines, and D+ lines and D- lines transmit charging current, transmit the charging stream of electricity only to make With 1.7 times of VBUS transmission charging currents.Or under the premise of every circuit line loss identical, if Using VBUS lines and D+ lines, or when VBUS lines and D- lines are to transmit charging current, the charging of transmission Electric current is 2 times when charging current is transmitted using only VBUS lines;If use VBUS lines, and D+ Line and D- lines transmit charging current, and the charging current of transmission is to transmit charging current using only VBUS lines 3 times.

It should be noted that when charger using its VBUS line and D+ lines to transmit electric current when, filling In electric process, the communication modes of D- lines are changed to single-wire communication mode, and charger can be connect using D- lines The charge control information that terminal is sent is received, until charging terminates;When charger using its VBUS line and When in D- lines to transmit electric current, in charging process, the communication modes of D+ lines are changed to single-wire communication mode, Charger can carry out the charge control information that receiving terminal is sent using D+ lines, until charging terminates.Wherein, The charge control information of transmission can for example include:The battery capacity of terminal, current conditions etc..

When charger using its VBUS line, D+ lines and D- lines to transmit electric current when, in charging process, Because D+ lines and D- lines are used for transmitting electric current, therefore, D+ lines and D- lines are being all connected to VBUS Before line, charge control information that the receiving terminal that charger can shift to an earlier date transmits.

Below, identification and charging process of the charger to terminal will be described in detail by Fig. 7 to Fig. 8.

Fig. 7 is refer to, is the course of work of charger, the process is worked with the terminal shown in Fig. 3 Journey is corresponding.After charger inserts terminal to be charged (S701), it is accurate that charger performs quick charge identification Standby operation (S702).Then detect whether that receiving the charger that terminal is sent confirms life in certain time Make (S703).If after receiving confirmation order, feedback identifying confirmation signal gives terminal (S704).Then D+ lines are connected to VBUS lines, while D- lines are changed into single-wire communication mode (S705).Pass through The charge control information that D- receiving terminals are sent carries out charging until charging terminates (S706).When default Between charger do not received in threshold value, such as in certain time confirm order (S707), that is, confirm time-out, D+ and D- switchings are then connected to certain preset mode state (S708), such as BC1.2 protocol modes, To terminal charge until terminating (S709) under the preset mode.The charger of the present embodiment was charging Cheng Zhong, due to transmitting electric current to terminal using VBUS lines and D+ lines, with being used only in the prior art Line loss during VBUS lines transmission charging current is P=I2× R is compared, and uses the embodiment of the present invention Line loss during the same charging current of scheme transmission is P ,=2 × (I/2)2× R=1/2 × I2× R=P/2, I.e. total line loss is the half of prior art.

As shown in figure 8, being the course of work of charger, the process is worked with the terminal shown in Fig. 4 Journey is corresponding.The workflow of charger is roughly the same with the workflow of charger in Fig. 7 in Fig. 8, only One differs only in, and charger is after charger recognition and verification order is received, by D+ lines and D- Line switching is connected to VBUS lines, i.e. Fig. 7 and Fig. 8's differs only in S805-S806.The present embodiment In charging process, because charger using VBUS lines, D+ lines and D- lines transmits electric current to terminal, Line loss during with VBUS lines transmission charging current being used only in the prior art is P=I2× R is compared, Line loss during charging current same using the scheme transmission of the embodiment of the present invention is P "=3 × (I/3)2× R=1/3 × I2× R=P/3, i.e. total line loss are the half 1/3 of prior art.

Corresponding to the first embodiment of above-mentioned charging method, present invention also offers a kind of terminal 9.The end End can be smart mobile phone, tablet personal computer etc..The details being related in the first embodiment of above-mentioned charging method It can be performed by the terminal 9.

As shown in figure 9, the terminal 9 of the present invention can include:Charge Management unit 91, controlling switch 92 and charging converting unit 93.

Wherein, Charge Management unit 91, for identify insert its USB interface access device whether be Matching quick charger;

Controlling switch 92, the access device of its USB interface is inserted for being identified in Charge Management unit 91 For matching quick charger when, by least one in the D+ lines or D- lines of terminal USB interface It is connected to the VBUS lines of terminal USB interface;

Charge converting unit 93, for when controlling switch 92 is by least company in D+ lines or D- lines It is connected to after VBUS lines, performs charging input operation.

Specifically, Charge Management unit 91 is specifically used for:When detecting access device insertion terminal During USB interface, D+ lines and D- lines are connected to Charge Management unit 91 by control controlling switch 92, with Perform quick charge identification and prepare operation, and charger recognition and verification order is initiated to access device;And When receiving the recognition and verification signal of access device, then it is assumed that the access device of insertion terminal USB interface For matching quick charger.

Specifically, Charge Management unit 91 is additionally operable to do not receiving the recognition and verification signal of access device When, detect whether the equipment is charger;Charge converting unit 93, in Charge Management unit 91 When to detect access device be charger, charging input operation is performed;Controlling switch 92, for charging Administrative unit 91 detects access device when not being charger, and D+ lines and D- lines are connected into terminal Usb protocol process chip, so that terminal performs usb protocol operation.

Corresponding to the fourth embodiment of above-mentioned charging method, present invention also offers a kind of charger 10.On Stating the details being related in the fourth embodiment of charging method can be performed by the charger.Such as Figure 10 Shown, the charger can include:Charge Management unit 101, controlling switch 102, power output unit 103。

Wherein, Charge Management unit 101, whether the terminal that its USB interface is inserted for identifying is therewith The quick charge terminal of matching;Controlling switch 102, for recognizing insertion when Charge Management unit 101 When the terminal of its USB interface is matching quick charge terminal, by the D+ lines or D- of charger At least one VBUS line for being connected to charger in line;Power output unit 103, for when control At least at least one of one in the D+ lines or D- lines of charger is connected to charger by switch After VBUS lines, charging output operation is performed.

Specifically, Charge Management unit 101 is specifically used for:

When detecting that terminal inserts its USB interface, perform quick charge identification and prepare operation;And

When receiving the charger recognition and verification order that terminal is sent, it is believed that insert the terminal of USB interface For matching quick charge terminal, and recognition and verification signal is returned to the terminal.

Also, after one in D+ lines or D- lines is connected to VBUS lines by controlling switch 102, During power output unit 103 performs charging output operation, Charge Management unit is additionally operable to pass through institute Remaining one in correction data line or negative data line is stated to receive the charge control information that the terminal transmits. And/or after D+ lines and D- lines are connected to VBUS lines by controlling switch 102, Charge Management unit After 101 send recognition and verification signal to terminal, Charge Management unit 101 is additionally operable to receiving terminal and transmitted Charge control information.

Below, it by Figure 11 to Figure 16, will be described in detail between the charger of the present invention and terminal and carry out The principle and the course of work more quickly to charge.

As shown in figure 11, it is schematic diagram of the terminal 9 with charger 10 of the present invention.As shown in figure 12, When charger 10 is connected with terminal 9 by USB cable, now, the Charge Management list of charger 10 When member 101 detects terminal, D+ and D- are connected to Charge Management unit 101 by control controlling switch 102. When the Charge Management unit 91 of terminal 9 detects the insertion USB interface of charger 10, control control is opened Charge Management unit 91 will be connected to by D+ and D- by closing 92, prepare operation to perform quick charge identification, And initiate charger recognition and verification order to charger 10.

The Charge Management unit 101 of charger 10 and the Charge Management unit 91 of terminal 9 are used to detect end Whether end 9 is adapted to charger 10, if not being adapted to success, the Charge Management unit of charger 10 D+ and D- are switched to certain preset mode state, such as BC1.2 associations by 101 control controlling switches 102 View pattern, so that terminal 9 can identify that it is charger, charged to terminal 9, such as Figure 13 It is shown.Equally, when the detection charger 10 of terminal 9 and its uncomfortable timing, also whether access device is detected It is the charger for meeting certain preset mode, such as BC1.2 agreement chargers.If it is not, charging valve Reason unit 912 controls controlling switch 92 that D+ and D- are switched into usb protocol process chip, such as Figure 14 It is shown.

Figure 15 is refer to, differentiation and charging process of the terminal 9 to charger 10 will be described from end side. For terminal 9, when there is equipment insertion, its Charge Management unit 91 is by controlling controlling switch 92 D+ lines and D- lines are connected to Charge Management unit 91, and initiate charger recognition and verification order.When filling After electric administrative unit 92 receives the recognition and verification signal of the return of charger 10, Charge Management unit 91 passes through D+ is connected to the VBUS lines of terminal 9 by control controlling switch 92, while D- communication modes are changed to Single-wire communication mode, and start charging converting unit 93 and charged to battery 94, as shown in figure 15. After Charge Management unit 91 does not receive the recognition and verification signal of the return of charger 10, Charge Management Unit 91 then thinks that access device is not the quick charger being adapted to therewith, now Charge Management unit 91 Detection access device whether be BC1.2 agreements charger.If it is confirmed that access device is to meet BC1.2 The charger of agreement, Charge Management unit 91 start charging converting unit 93, carried out directly to battery 94 Charging is until terminating.If access device is nor the charger of BC1.2 agreements, Charge Management unit 91 Controlling switch 92 is then controlled, D+ lines and the switching of D- lines are connected to usb protocol process chip.

Please continue to refer to Figure 15, differentiation and charging of the charger 10 to terminal 9 will be described from charger side Process.After charger inserts terminal to be charged, the Charge Management unit 101 of charger 10 passes through control Controlling switch 102, D+ lines and the switching of D- lines are connected to Charge Management unit 101.Then at certain section Between detect whether to receive the charger that terminal 9 is sent and confirm order.After receiving confirmation order, feedback is known Other confirmation signal is to terminal 9.Subsequent Charge Management unit 101 controls controlling switch 101, and D+ lines are connected VBUS lines are connected to, while D- is changed into single-wire communication mode.Filled in charging process by D- transmission Electric control information is until terminate.Charger is not received within certain time and confirms order, Charge Management list Member 101 is connected to certain preset mode shape by controlling controlling switch 101, by D+ lines and the switching of D- lines State, such as BC1.2 protocol modes, charged under the preset mode to terminal 9 until terminating.

In Figure 15, describe in charging process, charging current is transmitted by D+ lines and VBUS lines Process, turn next to Figure 16, it is substantially the same in Figure 15 workflow, and difference is, is filling In electric process, charging current is transmitted by D+ lines, D- lines and VBUS lines.

In figure 16, the Charge Management unit 91 of terminal 9 leads to after recognition and verification signal is received D+, D- will be all connected to VBUS by crossing control controlling switch 92, and according to the information of charger, be opened Dynamic charging converting unit 93 is charged to battery 94.For charger 10, the He of charger 10 After terminal 9 is adapted to, the Charge Management unit 101 of charger 10 by control controlling switch 102 by D+, D- is connected to VBUS lines.It should be noted that after adaptation, each controlling switch connects D+, D- It is connected to before VBUS lines, its charge control information can be sent to charger 10 by terminal 9.Then Start charging process, in whole charging process, terminal 9 no longer communicates to charger 10.

It is noted that each module that the present invention relates to is logic module, in actual applications, One logic unit can be a part for a physical location or a physical location, may be used also To be realized with the combination of multiple physical locations.In addition, in order to protrude the innovative part of the present invention, this implementation The unit less close with solving technical problem relation proposed by the invention is not introduced in mode, But this, which is not intended that in present embodiment, is not present other units.

One of ordinary skill in the art will appreciate that realize all or part in above-mentioned embodiment method Flow, it is that by computer program the hardware of correlation can be instructed to complete, described program can store In a computer read/write memory medium, the program is upon execution, it may include such as the reality of above-mentioned each method Apply the flow of example.Wherein, described storage medium can be magnetic disc, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..

It will be understood by those skilled in the art that the respective embodiments described above are to realize that the present invention's is specific Embodiment, and in actual applications, can to it, various changes can be made in the form and details, without inclined From the spirit and scope of the present invention.

Claims (13)

1. a kind of charging method, applied to terminal, the USB interface of the terminal includes:Power line, Correction data line and negative data line, it is characterised in that including:
Whether the access device that the terminal recognition inserts its USB interface is matching quick charge Device;
When it is matching quick charger to recognize the access device for inserting its USB interface, institute State terminal and at least one in the correction data line or negative data line is connected to the power line;
Perform charging input operation.
2. according to the method for claim 1, it is characterised in that the terminal judges to insert its USB The step of whether access device of interface is matching quick charger includes:
When detecting that the access device inserts the USB interface, the terminal performs quick charge Identification prepares operation, and initiates charger recognition and verification order to the access device;
When receiving the recognition and verification signal of the access device, the terminal thinks to insert the USB The access device of interface is matching quick charger.
3. method according to claim 1 or 2, it is characterised in that
When the terminal by one in the correction data line or negative data line be connected to the power line it Afterwards, during the execution charging input operation, methods described also includes:The terminal uses institute Remaining data lines in correction data line or negative data line are stated by charge control information transfer to described fast Fast charger;And/or;
It is described before the correction data line and negative data line are all connected to the power line by the terminal Method also includes:The terminal gives charge control information transfer to the quick charger.
4. a kind of charging method, applied to charger, the USB interface of the charger includes:Power supply Line, correction data line and negative data line, it is characterised in that including:
Whether the terminal that its USB interface is inserted in the charger identification is that matching quick charge is whole End;
It is described when it is matching quick charge terminal to recognize the terminal for inserting its USB interface At least one in the correction data line or negative data line is connected to the power line by charger;
Perform charging output operation.
5. according to the method for claim 4, it is characterised in that the charger identification inserts it The step of whether terminal of USB interface is matching quick charge terminal, including:
When detecting that the terminal inserts the USB interface, the charger, which performs quick charge, to be known It Zhun Bei not operate;
When receiving the charger recognition and verification order that the terminal is sent, the charger is thought to insert The terminal of the USB interface is matching quick charge terminal, and return recognition and verification signal to The terminal.
6. the method according to claim 4 or 5, it is characterised in that
When one in the correction data line or negative data line is connected to the power line by the charger Afterwards, during the execution charging output operation, methods described also includes:The charger makes Filled with remaining data lines in the correction data line or negative data line come receive that the terminal transmits Electric control information;And/or;
Before the correction data line and negative data line are all connected to the power line by the charger, institute Stating method also includes:The charger receives the charge control information that the terminal transmits.
7. a kind of terminal, it is characterised in that include:
Charge Management unit, whether the access device that its USB interface is inserted for identifying is matching Quick charger;
Controlling switch, the access device of its USB interface is inserted for being identified in the Charge Management unit For matching quick charger when, by the correction data line or negative data line of the terminal USB interface In at least one power line for being connected to the terminal USB interface;
Charge converting unit, for when the controlling switch by the correction data line or negative data line extremely Few one is connected to after the power line, performs charging input operation.
8. terminal according to claim 7, it is characterised in that the Charge Management unit is specific For:
When detecting that the access device inserts the USB interface, the controlling switch is controlled by institute State correction data line and negative data line is connected to the Charge Management unit, prepared with performing quick charge identification Operation, and initiate charger recognition and verification order to the access device;
And when receiving the recognition and verification signal of the access device, then it is assumed that insert the USB The access device of interface is matching quick charger.
9. the terminal according to claim 7 or 8, it is characterised in that the Charge Management unit, Be additionally operable to when not receiving the recognition and verification signal of the access device, detect the access device whether be Charger;
The charging converting unit, for detecting that the access device is to fill in the Charge Management unit During electrical equipment, charging input operation is performed;
The controlling switch, for detecting that the equipment is not charger in the Charge Management unit When, the correction data line and negative data line are connected to the usb protocol process chip of the terminal, with The terminal is set to perform usb protocol operation.
10. terminal according to claim 7, it is characterised in that
One in the correction data line or negative data line is connected to the power supply in the controlling switch After line, during the charging converting unit performs charging input operation, the Charge Management unit Using remaining one in the correction data line or negative data line by charge control information transfer to described fast Fast charger;And/or;
After the correction data line and negative data line are connected to the power line by the controlling switch, institute Before stating the recognition and verification signal that Charge Management unit receives the equipment, the Charge Management unit is also For giving charge control information transfer to the quick charger.
A kind of 11. charger, it is characterised in that including:
Charge Management unit, whether the terminal that its USB interface is inserted for identifying is matching fast Fast charging terminal;
Controlling switch, for when the Charge Management unit recognize insert its USB interface terminal be During matching quick charge terminal, by least one connection in the correction data line or negative data line To the power line;
Power output unit, for when the controlling switch by the correction data line or negative data line extremely Few one is connected to after the power line, performs charging output operation.
12. charger according to claim 11, it is characterised in that the Charge Management unit It is specifically used for:
When detecting that the terminal inserts the USB interface, control the controlling switch by it is described just Data wire and negative data line are connected to the Charge Management unit, prepare behaviour to perform quick charge identification Make;And
When receiving the charger recognition and verification order that the terminal is sent, it is believed that insert the USB The terminal of interface is matching quick charge terminal, and returns to recognition and verification signal to the terminal; And
When not receiving the charger recognition and verification order that the terminal is sent in preset time threshold, It is not matching quick charge terminal to think the terminal for inserting the USB interface, controls the control The correction data line and negative data line are connected to preset mode by system switch, so that the charger is pre- at this If it is the terminal charge of the insertion USB interface under pattern.
13. charger according to claim 11, it is characterised in that
One in the correction data line or negative data line is connected to the power supply in the controlling switch After line, during the power output unit performs charging output operation, the Charge Management unit It is additionally operable to what is transmitted by remaining one in the correction data line or negative data line to receive the terminal Charge control information;And/or
After the correction data line and negative data line are connected to the power line by the controlling switch, institute State Charge Management unit and be sent to the recognition and verification signal to after the terminal, the Charge Management list Member is additionally operable to receive the charge control information that the terminal transmits.
CN201610343717.5A 2016-05-20 2016-05-20 Charging method, charger and terminal CN107404133A (en)

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