CN105703430B - A kind of charging method, mobile terminal, charging equipment and system - Google Patents
A kind of charging method, mobile terminal, charging equipment and system Download PDFInfo
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- CN105703430B CN105703430B CN201610125483.7A CN201610125483A CN105703430B CN 105703430 B CN105703430 B CN 105703430B CN 201610125483 A CN201610125483 A CN 201610125483A CN 105703430 B CN105703430 B CN 105703430B
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- 230000000903 blocking effect Effects 0.000 claims description 5
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- 230000007613 environmental effect Effects 0.000 abstract description 2
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Classifications
-
- H02J7/0072—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of charging method of present invention offer, mobile terminal, charging equipment and system.The electric current for the VBUS that mobile terminal controls USB interface by the control switch that can be connected or chopping current inputs inputs, to generate specific current waveform；The wherein described specific current waveform is used to be electrically charged the output voltage for adjusting the charging equipment after equipment detects and charges to the mobile terminal.Compared with common USB interface charging, the charging time is greatly shortened, user experience is improved；Compared with special charging interface, volume, the weight of terminal can be not only reduced, also improves the versatility and utilization rate of charger, is conducive to saving and environmental protection.
Description
Technical field
This case applies on December 28th, 2011, a kind of entitled mobile terminal and its charging equipment, side
Method (application No. is：201110446295.1) patent application divisional application.
The present invention relates to field of communication technology, more particularly, to a kind of charging method, mobile terminal, charging equipment and
System.
Background technology
It is tablet computer, mobile phone, portable media player, portable with the rapid development of mobile terminal technology
The products such as navigator, electronic reader go deep into huge numbers of families, have obtained extremely wide application.On these portable terminals,
It is trend of the times, Chinese Government and European Union that the unified USB interface using standard, which carries out charging, is made that some pressures thus
Or recommendatory regulation is (such as《GSM CDMA charger and interfacing requirement and test method》Deng).These regulations
For improving the convenience that charges, consumer cost is reduced, social resources is saved, reduces electron wastes, control greenhouse gas emission
Etc. have positive meaning.
The USB host interface of standard, using the charging voltage of 5V and the charging current of 500mA, charge power only has 2.5W.
In order to solve the problems, such as that the battery to larger capacity carries out quick charge, usually there is special electricity to mobile terminal device interior design
Road can identify the type of feeder ear.If identifying that user is charged using power supply adaptor rather than usb host,
Charging current can be increased to 1A or so so that charge power reaches 5W or so, shortens the charging time, improves user
Experience.But the USB connector of standard, is influenced by contact resistance, and charging current can not be improved arbitrarily.Such as it is normal to terminal
For MINI and MICRO type USB connectors, once charging current may result in apparent fever and reliability more than 1A
Decline, therefore, using above-mentioned scheme, charge power also can only achieve 5W or so.
The charge power of above-mentioned 5W or so still dislikes insufficient for the mobile terminal for the high capacity cell that has part ownership.Such as it is right
In large scale tablet computer, battery capacity can exceed that 6000mAh, can not be in two or three hours fully charged using said program
Pond.Common solution is the high-power charging interface of design specialized on the terminal device.But it does so and not only increases to terminal
Add additional cost and volume, also reduced terminal and the versatility of charger, is unfavorable for saving and environmental protection.
Invention content
To make up drawbacks described above, a kind of charging method of present invention proposition, mobile terminal, charging equipment and system.
To achieve the above object, the present invention provides a kind of mobile terminal charging method, the method includes：Mobile terminal is logical
Cross can connect or chopping current input control switch control USB interface VBUS electric current input, it is specific to generate
Current waveform；The wherein described specific current waveform is for being electrically charged the output for adjusting the charging equipment after equipment detects
Voltage charges to the mobile terminal.
Further, the mobile terminal further includes the charge management circuit with the control switch connection, in the charging phase
Between, the mobile terminal is inputted using the electric current for controlling switch connection or blocking VBUS, by the control switch
VBUS power supplys are exported to the charge management circuit.
Further, the mobile terminal is connect by the control switch control USB that can be connected or chopping current inputs
The electric current of the VBUS of mouth inputs, and includes to generate specific current waveform：The mobile terminal judges current voltage of VBUS
It is defeated to be controlled according to judging result for the electric current for controlling switch connection or blocking VBUS with the relationship of predetermined threshold value
Enter, to generate the specific current waveform.
Further, described according to judging result, it controls the control switch connection or blocks the electric current input of VBUS,
Include to generate the specific current waveform：If it is determined that current voltage of VBUS is less than the predetermined threshold value
When, then it generates a control signal and is used to control the control switch connection or blocks the electric current input of VBUS, to generate
State specific current waveform.
Further, the specific current waveform adjusts the defeated of the charging equipment for being electrically charged after equipment detects
Going out voltage includes：After the charging equipment is connected with the mobile terminal, the charging equipment detects the specific electric current
Waveform is turned up the charging equipment output voltage and charges to the mobile terminal.
In addition the present invention also provides a kind of charging equipment charging method, the method includes：Charging equipment detects movement
When terminal is by controlling the electric current input generation specific current waveform for switching control VBUS, the output of the charging equipment is adjusted
Voltage charges to the mobile terminal.
Further, the charging equipment detects that mobile terminal switchs the electric current input generation of control VBUS by controlling
Specifically current waveform includes：The charging equipment detects the specific current waveform by current waveform detection circuit.
Further, the output voltage of the adjustment charging equipment includes to mobile terminal charging：According to institute
The specific current waveform of current waveform detection circuit detection is stated, the output voltage of AC/DC conversion circuits is controlled.
Further, the current waveform detection circuit includes current sampling resistor；The charging equipment passes through current wave
Shape detection circuit detects the specific current waveform：The mobile terminal is detected by the current sampling resistor to generate
Specific current waveform.
Further, the output voltage of the adjustment charging equipment includes described in raising to mobile terminal charging
The output voltage of charging equipment charges to the mobile terminal.
In addition the present invention also provides a kind of mobile terminal, the mobile terminal includes that the VBUS power supplys of control USB interface are defeated
The control switch entered, the electric current input of VBUS can be connected or be blocked to the control switch, to generate specific current wave
Shape；The wherein described specific current waveform is for being electrically charged the output voltage for adjusting the charging equipment after equipment detects to institute
State mobile terminal charging.
Further, the mobile terminal further includes the charge management circuit with the control switch connection, in the charging phase
Between, the mobile terminal is inputted using the electric current for controlling switch connection or blocking VBUS, by the control switch
VBUS power supplys are exported to the charge management circuit.
Further, the mobile terminal further includes analog-digital converter, and the mobile terminal passes through the analog-digital converter
The relationship for judging current voltage of VBUS and predetermined threshold value, according to judging result, control the control switch connection or
Person blocks the electric current input of VBUS, to generate the specific current waveform.
Further, described according to judging result, it controls the control switch connection or blocks the electric current input of VBUS,
Include to generate the specific current waveform：If it is determined that current voltage of VBUS is less than the predetermined threshold value
When, then it generates a control signal and is used to control the control switch connection or blocks the electric current input of VBUS, to generate
State specific current waveform.
Further, the specific current waveform adjusts the charging equipment for being electrically charged after equipment detects
Output voltage to the mobile terminal charging include：After the charging equipment is connected with the mobile terminal, the charging is set
After detecting the specific current waveform, the charging equipment output voltage is turned up and charges to the mobile terminal.
Further, the control switch is metal-oxide-semiconductor.
In addition the present invention also provides a kind of mobile terminal charging equipment, the charging equipment includes current waveform detection electricity
Road, the charging equipment detect that mobile terminal switchs the electricity for controlling VBUS by controlling by the current waveform detection circuit
When stream input generates specific current waveform, then the output voltage for adjusting the charging equipment charges to the mobile terminal.
Further, the current waveform detection circuit includes current sampling resistor, and the current waveform detection circuit is logical
It crosses the current sampling resistor and detects the specific current waveform of the mobile terminal generation.
Further, the charging equipment further includes AC/DC conversion circuits, and the charging equipment is according to the current waveform
The specific current waveform of detection circuit detection controls the output voltage of the AC/DC conversion circuits to described mobile whole
End charging.
Further, the output voltage of the adjustment charging equipment includes described in raising to mobile terminal charging
The output voltage of charging equipment charges to the mobile terminal.
In addition the present invention also provides a kind of Mobile terminal charging system, the system comprises mobile terminal and be the shifting
The charging equipment of dynamic terminal charge, the mobile terminal includes the control switch for the VBUS power inputs for controlling USB interface, described
The electric current input of VBUS can be connected or be blocked to control switch, to generate specific current waveform；The charging equipment packet
Output current wave detection circuit is included, the charging equipment detects the mobile terminal by the current waveform detection circuit
When the specific current waveform generated, then adjusts output voltage and charge to the mobile terminal.
In conclusion being had the advantages that using the present invention：
Compared with common USB interface charging, the charging time is greatly shortened, user experience is improved；It is filled with special
Electrical interface is compared, and volume, the weight of terminal can be not only reduced, and is also improved the versatility and utilization rate of charger, is conducive to
It saves and environmentally friendly.By the USB interface of terminal, charge power is increased substantially.
Description of the drawings
Fig. 1 be the embodiment of the present invention can be carried out by USB interface high-power charging adapter and mobile terminal it is total
Body system principle diagram；
Fig. 2 is the interlock circuit schematic diagram inside mobile terminal described in the embodiment of the present invention；
Fig. 3 is mobile terminal inside and the relevant software workflow figure of high-power charging described in the embodiment of the present invention；
Fig. 4 is the principle schematic inside the power supply adaptor described in the embodiment of the present invention；
Fig. 5 is the functional block diagram of waveforms detection logic circuit of the embodiment of the present invention；
Fig. 6 is the course of work schematic diagram of logic circuit in circuit operation principle of the embodiment of the present invention.
Fig. 7 is mobile terminal of embodiment of the present invention switch control si anal waveforms, current waveform, comparator input in adapter
The comparison diagram of voltage waveform and output current wave.
Specific implementation mode
The present invention provides a kind of equipment and mobile terminal carrying out high-power charging by USB interface, including special designing
Power supply adaptor and the charge management circuit inside portable terminal.Using technical solution of the present invention, USB can be passed through
Interface realizes the charge power much larger than common power adapter.Power supply adaptor of the present invention can both use medium and small work(
Rate charges to common portable terminal, can also be powered to the portable terminal with high-power.And the portable terminal
End, can not only use above-mentioned adaptor charge, can also receive common power supply adaptor/usb host and charge to itself.
Meet a kind of mobile terminal charging method of the embodiment of the present invention, the VBUS power supplys of mobile terminal inside USB interface
The power input that can cut off and open a VBUS switch is connected in input, during charging, the mobile terminal passes through control
The switch is made, control input current is allowed to generate specific current waveform；In charging equipment for mobile terminal charging
Portion includes the circuit that can detect itself output current wave, if the circuit detect it is specific caused by above-mentioned mobile terminal
Current waveform, then by the output voltage of charging equipment be turned up to the mobile terminal charge.
The mobile terminal includes control switch, DC/DC charge management circuits, battery and other circuits, during charging,
The mobile terminal can connect or block the electric current input of VBUS using the switch, to generate specific current wave
Shape, by the VBUS power supplys that above-mentioned control switchs, output gives DC/DC charge management circuits, charges the battery, and its to terminal
He powers at circuit.
The charging equipment includes AC/DC converters and output current wave detection circuit, wherein AC/DC conversion circuits
Output voltage can be adjusted；Current waveform detection circuit can generate a logic level, control according to the waveform of output current
The output voltage of AC/DC.
After the charging equipment is connected with mobile terminal, mobile terminal generates one specifically by controlling switch immediately
Current waveform, the current waveform are electrically charged after the current waveform detection circuit inside equipment detects, control adapter improves
Output voltage.
Mobile terminal separated in time judges primary current voltage of VBUS by analog-digital converter ADC；If voltage
Higher than predetermined threshold value, then do not interfere charging process；If current voltage of VBUS is less than predetermined threshold value, generate
One control signal, generates the specific current waveform.
The additional embodiment for meeting the present invention also proposes that a kind of mobile terminal, the mobile terminal include；It is opened including control
Pass, charge management circuit, battery and other circuits；The electric current input of VBUS can be connected or be blocked to the control switch, from
And generate specific current waveform；The charge management circuit receives the VBUS electric currents by above-mentioned control switch, is filled to battery
Electricity, and power to other circuits of terminal.
Charging equipment to mobile terminal charging includes the circuit that can detect itself output current wave, if should
Circuit detects specific current waveform caused by above-mentioned mobile terminal, then the output voltage of charging equipment is turned up to described
Mobile terminal charges.
The mobile terminal separated in time judges primary current voltage of VBUS by analog-digital converter ADC；If
Voltage is higher than predetermined threshold value, then does not interfere charging process；If current voltage of VBUS is less than predetermined threshold value,
A control signal is generated, the specific current waveform is generated；The current waveform is electrically charged the inspection of the current waveform inside equipment
After slowdown monitoring circuit detects, control adapter improves output voltage.
The additional embodiment for meeting the present invention also proposes that a kind of mobile terminal charging equipment, the charging equipment include AC/
DC converters and output current wave detection circuit, the wherein output voltage of AC/DC conversion circuits can be adjusted；Current waveform is examined
Slowdown monitoring circuit can generate a logic level, control the output voltage of AC/DC according to the specific waveforms of output current.
The mobile terminal includes control switch, DC/DC charge management circuits, battery and other circuits, during charging,
The mobile terminal can connect or block the electric current input of VBUS using the switch, to generate specific current wave
Shape, by the VBUS power supplys that above-mentioned control switchs, DC/DC charge management circuits are given in output, charge the battery and its to terminal
He powers at circuit.
After the charging equipment is connected with mobile terminal, mobile terminal generates one specifically by controlling switch immediately
Current waveform, the current waveform are electrically charged after the current waveform detection circuit inside equipment detects, control adapter improves
Output voltage.
Mobile terminal separated in time judges primary current voltage of VBUS by analog-digital converter ADC；If voltage
Higher than predetermined threshold value, then do not interfere charging process；If current voltage of VBUS is less than predetermined threshold value, generate
One control signal, generates the specific current waveform.
The main thought of foundation of the present invention describes：
Inside mobile terminal, a switch is connected in the VBUS power inputs of USB interface, can cut off and open VBUS
Power input.During charging, the mobile terminal by controlling this switch, can control input current be allowed to generate it is specific
Current waveform.The power supply adaptor, output voltage can be adjusted.Include that can examine inside the power supply adaptor
Survey the circuit of itself output current wave.If the circuit detects specific current waveform caused by above-mentioned mobile terminal,
Then the output voltage of adapter is turned up, achievees the purpose that increase output power.
Below in conjunction with the accompanying drawings, by the description to one embodiment, invention content is further described.
Shown in please referring to Fig.1, Fig. 1 is the adapter that the embodiment of the present invention can carry out high-power charging by USB interface
And the overall system functional block diagram of mobile terminal.The figure is divided into two parts, and left side is power supply adaptor, and right side is mobile terminal.
The mobile terminal includes control switch, DC/DC charge management circuits, battery and other circuits.During charging,
Software inside the mobile terminal can connect or block the electric current input of VBUS using the switch, specific to generate
Current waveform.By the VBUS electric currents that above-mentioned control switchs, output gives DC/DC charge management circuits, charges the battery and to end
Other circuits power supply at end.
The power supply adaptor, including AC/DC converters and output current wave detection circuit.Wherein AC/DC conversion electricity
The output voltage on road can be adjusted；Current waveform detection circuit can generate a logic according to the specific waveforms of output current
Level controls the output voltage of AC/DC.
Before power supply adaptor connects mobile terminal, since its internal waveform detection circuit does not detect specific electricity
Waveform is flowed, adapter exports 5V voltages.After adapter is connected with mobile terminal, mobile terminal is immediately by controlling switch production
A raw specific current waveform, the current waveform are adapted after the current waveform detection circuit inside device detects, just control
Adapter processed improves output voltage, achievees the purpose that increase charge power.
Shown in please referring to Fig.2, Fig. 2 is the interlock circuit schematic diagram inside mobile terminal described in the embodiment of the present invention.By filling
Whether the CTRL signal that electric management software is controlled is opened by a driver, control PMOS tube T21.By the power supply of T21
Charging management chip MAX8903 power supplies are given by the low-pass filter network that is made of L21 and C21, which can be to prevent
Only the working pulse of MAX8903 influences the current waveform on VBUS.The effect of Z21 and D21 in figure is to prevent T21 from closing wink
Between, the high voltage induced on circuit damages T21.In addition to this, VBUS signals also give the ADC of system, mobile whole to allow
The software run in end reads current voltage of VBUS.
In fig 2, MAX8903 is a DC/DC charging chip with dynamic path management.When there is external power supply,
By external power supply after DC/DC is converted, VSYS and battery powered are given；When there is no external power supply, powered to VSYS by battery.
The input current upper limit of MAX8903, is set as 1A in the present embodiment.The acceptable maximum input voltages of MAX8903 are 16V,
It can be worked normally when the voltage of VBUS of input reaches 10V.
Shown in please referring to Fig.3, Fig. 3 is inside mobile terminal described in the embodiment of the present invention and high-power charging is relevant soft
Part work flow diagram comprising following steps：
Step 301：Open VBUS power switches；
Step 302：Read voltage of VBUS；
Step 303：Judge whether voltage of VBUS, if be less than, is transferred to higher than 5.5V if it is, being transferred to step 305
Step 304；
Step 304：Control signal is given by 11001010,1ms is occupied per BIT；
Step 305：Be delayed 1 second return to step 302.
Software judges primary current voltage of VBUS every 1s, by analog-digital converter ADC.If voltage is higher than 5.5V,
Then illustrate that external adapter comes into high voltage output state, does not interfere charging process；But if current voltage of VBUS is less than
5.5V, then software is using one control signal of CTRL signal generation, and by controlling T1, one preset current waveform of generation should
Current waveform can refer to attached drawing 7 with controlling the relationship of signal.In the present embodiment, control sequence 11001010B, with 16 systems
It is expressed as 0CAH.
In this embodiment, the criterion is set as 5.5V voltages, which is a predetermined threshold value,
In other embodiments, other values be could be provided as.
Attached drawing 4 is the principle schematic inside the power supply adaptor described in the embodiment of the present invention.Wherein, by R41/R42/
R43/T41 forms the voltage feedback network of AC/DC.The reference voltage V REF of AC/DC adapter feedback ends is 2.5V, takes R41=
1Kohm, R42=330ohm, R43=670ohm, then when it is low level to control signal, NMOS tube T41 is not turned on, output voltage
For：
VOUT=VREF* (R41+R42+R43)/(R42+R43)=5V
When control signal is high level, T41 conductings, by R43 short circuits, then output voltage is：
VOUT=VREF* (R41+R42)/R42=10V
In figure 4, connect a resistance R44, value 0.05ohm on direct current output path.The ohmically pressure
Drop reflects the output current of current orchestration.It is superimposed a bias voltage for being fixed as 5mV with this pressure drop, gives a comparison
Device.When output current is more than 0.1A, which is more than 5mV, and comparator exports low level；Otherwise work as output current
When less than 0.1A, comparator exports high level.If small when big when the output current of adapter, the comparator with 0.1A be than
Compared with threshold value, current waveform is digitized.Comparator input voltage waveform and output electricity in digitized current waveform, adapter
The relationship of stream waveform please refers to Fig. 7.
Waveforms detection logic circuit in figure 4, acquiescence output low level signal so that AC/DC exports 5V；If wave
Shape detection logic circuit detects specific digital waveform (being 11001010B in the present embodiment), then exports high level letter
Number so that the output voltage of AC/DC rises to 10V.Waveform circuit once detects that input signal is high (corresponds to defeated follow-up
Go out electric current and be less than 0.1A), then mean that terminal has not needed high-power charging or adapter is pulled out, the logic circuit
Low level is reverted at once, and control adapter output voltage returns to 5V.
Attached drawing 5 is the functional block diagram of above-mentioned waveforms detection logic circuit, and it includes clock generator, shift register, numbers
Word comparator, nor gate and a rest-set flip-flop.
Above-mentioned clock generator, it is fixed to generate a 1kHz clock, the work clock as shift register.In clock
Rising edge, shift register sampled input signal moves into the shift sequence of shift register.
Digital comparator in attached drawing 5, one input terminal derive from the parallel output of shift register, another input
End is fixed as specific, an identical value i.e. 11001010B with the switch control signal of terminal.The digital comparator is at 2
The 8bit data of port export low level when all consistent, otherwise, as long as soon as have a difference, the digital comparator output level
It can get higher.
Rest-set flip-flop in logic circuit, acquiescence output low level.When the ends R are high level, low level is exported, when detecting
When the ends S are high level, export as high level.The purpose of nor gate is, when R and S is effective simultaneously, makes R signal preferential, ensures
It is extracted from terminal in power supply adaptor, electric current declines, and can the output of adapter be restored to 5V at once.
Attached drawing 6 is the course of work schematic diagram of logic circuit in circuit operation principle of the embodiment of the present invention.Under original state,
Shift sequence inside shift register is 0 entirely, and rest-set flip-flop exports low level；Since the 2nd clock cycle, input signal
Start sequence 11001010B being sent into shift register, until the 9th rising edge clock, whole 8 fully enter displacement and post
Storage, shift register output value is just 11001010B (i.e. the 0CAH of 16 systems) at this time.At this point, 2 of digital comparator
Input end signal is identical, and output is 0 by 1 overturning, and after nor gate, control rest-set flip-flop is overturn, and is exported by 0
Become 1 (output voltage for corresponding to adapter is promoted to 10V).
Up to the 14th clock cycle since the 10th clock cycle, since 2 fan-ins of comparator are not according to
Together, comparator persistently exports high level.This period, 2 input terminals of rest-set flip-flop were all 0, and it is constant that output state remains 1
(output voltage for corresponding to adapter maintains 10V constant).
In the 15th clock cycle, input signal becomes 1 (be pulled out or charge corresponding to adapter and terminate).At this time by
In the R=1 of rest-set flip-flop, S=0, trigger output (is restored to immediately by 1 overturning for 0 corresponding to the output voltage of adapter
5V), it and is always maintained at down, until the 18th clock cycle.In this stage, due to the presence of nor gate, comparator it is defeated
Go out level and does not interfere with outputting and inputting for rest-set flip-flop.
Power supply adaptor and mobile terminal described in the present embodiment, in USB interface only by 1A electric currents when, can give move
The power of dynamic terminal input 10W has been more than substantially common USB interface power supply adaptor.
Adapter described in the present embodiment can also give common USB interface charging of mobile devices.In this case,
Since adapter can not receive the specific currents waveform that terminal is sent out, output voltage still maintains the 5V of standard, will not damage shifting
Dynamic terminal device, to ensure that the versatility of this adapter.
Certainly, the present invention also in the situation without departing substantially from spirit of that invention and its essence, can be familiar with this there are many embodiment
The technical staff in field makes various corresponding changes or variation in accordance with the present invention, as long as in the spirit and principles in the present invention
Within any modification, equivalent replacement, improvement, should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of mobile terminal charging method, which is characterized in that
During charging, the primary current voltage of VBUS of mobile terminal separated in time detection；If current VBUS electricity
The input current for forcing down the VBUS being connect with internal USB interface in predetermined threshold value, mobile terminal control is allowed to generate special
Fixed current waveform, wherein the specific current waveform is used to be turned up the defeated of the charging equipment for mobile terminal charging
Go out voltage.
2. the method as described in claim 1, which is characterized in that
One control that can cut off and open VBUS of connection is opened in input on the VBUS power supplys of USB interface inside the mobile terminal
It closes, the mobile terminal is switched by controlling the control, generates the specific current waveform.
3. method as claimed in claim 2, which is characterized in that
The mobile terminal further includes the charge management circuit with the control switch connection, during charging, by above-mentioned control
The VBUS power supplys of switch are made, output carries out battery charging to the charge management circuit.
4. method as claimed in claim 2, which is characterized in that
The mobile terminal is allowed to generate specific current waveform by the input current of the control switch control VBUS：
The primary current voltage of VBUS of mobile terminal separated in time detection；If current voltage of VBUS is less than predetermined
Threshold value then controls the control switch and generates the specific current waveform.
5. the method as described in claim 1, which is characterized in that
After the charging equipment is connected with mobile terminal, the charging equipment detects that mobile terminal generates the specific electric current
When waveform, output voltage is turned up and charges to the mobile terminal.
6. a kind of charging equipment charging method, which is characterized in that
After the charging equipment is connect with mobile terminal, during charging, the mobile terminal separated in time detection is primary
Current voltage of VBUS；If current voltage of VBUS is less than predetermined threshold value, mobile terminal control connects with internal USB interface
The input current of the VBUS connect is allowed to generate specific current waveform；It is specific that the charging equipment detects that mobile terminal generates
Current waveform when, then output voltage is turned up and charges to the mobile terminal.
7. method as claimed in claim 6, which is characterized in that
The charging equipment includes AC/DC conversion circuits and output current wave detection circuit, and wherein AC/DC conversion circuits is defeated
Going out voltage can be adjusted；Current waveform detection circuit can control the output of AC/DC conversion circuits according to the waveform of output current
Voltage.
8. the method for claim 7, which is characterized in that
The output current wave detection circuit detects the mobile terminal by current sampling resistor and generates specific current wave
Shape.
9. method as claimed in claim 6, which is characterized in that
The control that can cut off and open VBUS is connected inside the mobile terminal in the VBUS power inputs of USB interface
Switch, after the charging equipment is connected with mobile terminal, mobile terminal is switched by connecting or blocking the control of VBUS power supplys
The specific current waveform is generated, which detects it by the current waveform detection circuit inside the charging equipment
Afterwards, output voltage is improved to charge to the mobile terminal.
10. a kind of mobile terminal, which is characterized in that
The mobile terminal includes current waveform generation circuit, during charging, the mobile terminal separated in time detection
Primary current voltage of VBUS；If current voltage of VBUS is less than predetermined threshold value, the mobile terminal controls the electricity
Waveform generating circuit is flowed to generate specific current waveform, wherein the specific current waveform is for being turned up as the movement eventually
Hold the output voltage of the charging equipment of charging.
11. mobile terminal as claimed in claim 10, which is characterized in that
The current waveform generation circuit includes the control in the VBUS power inputs of USB interface inside the connection mobile terminal
Switch；The mobile terminal is by controlling the cut-out or opening that the control switchs, to generate specific current waveform.
12. mobile terminal as claimed in claim 11, which is characterized in that
The mobile terminal further includes analog-digital converter ADC, and the mobile terminal separated in time passes through the analog-to-digital conversion
Device ADC judges primary current voltage of VBUS；If current voltage of VBUS is less than predetermined threshold value, the control is controlled
Switch generates the specific current waveform.
13. mobile terminal as claimed in claim 11, which is characterized in that
The mobile terminal further includes the charge management circuit with the control switch connection, described mobile whole during charging
End is inputted using the electric current for controlling switch connection or blocking VBUS, to generate specific current waveform, is exported to institute
It states charge management circuit and carries out battery charging.
14. a kind of mobile terminal charging equipment, which is characterized in that
The charging equipment includes current waveform detection circuit, wherein after the charging equipment is connect with mobile terminal, is being charged
Period, the primary current voltage of VBUS of mobile terminal separated in time detection；If current voltage of VBUS is less than advance
Determining threshold value, the input current for the VBUS that mobile terminal control is connect with internal USB interface, is allowed to generate specific current wave
Shape；When the charging equipment detects that mobile terminal generates specific current waveform by the current waveform detection circuit, then
Output voltage is turned up to charge to the mobile terminal.
15. mobile terminal charging equipment as claimed in claim 14, which is characterized in that
The output current wave detection circuit detects the mobile terminal by current sampling resistor and generates specific current wave
Shape.
16. charging equipment as claimed in claim 14, which is characterized in that
The charging equipment further includes AC/DC conversion circuits, after the charging equipment is connected with mobile terminal, mobile terminal production
The raw specific current waveform, after which is detected by the current waveform detection circuit of the charging equipment, institute
The charging equipment control AC/DC conversion circuits raising output voltage is stated to charge to the mobile terminal.
17. a kind of Mobile terminal charging system, which is characterized in that
Charging equipment the system comprises mobile terminal and for mobile terminal charging；
The mobile terminal includes current waveform generation circuit, during charging, the mobile terminal separated in time detection
Primary current voltage of VBUS；If current voltage of VBUS is less than predetermined threshold value, the mobile terminal controls the electricity
Wave generation circuit is flowed to generate specific current waveform；
The charging equipment includes current waveform detection circuit, and during charging, the charging equipment passes through the current waveform
When detection circuit detects the specific current waveform that the mobile terminal generates, then it is that the mobile terminal charges to be turned up
Output voltage.
18. charging system as claimed in claim 17, which is characterized in that
The current waveform generation circuit includes the control in the VBUS power inputs of USB interface inside the connection mobile terminal
Switch；The electric current input of VBUS can be connected or be blocked to the control switch, to generate specific current waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610125483.7A CN105703430B (en) | 2011-12-28 | 2011-12-28 | A kind of charging method, mobile terminal, charging equipment and system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610125483.7A CN105703430B (en) | 2011-12-28 | 2011-12-28 | A kind of charging method, mobile terminal, charging equipment and system |
| CN201110446295.1A CN102570546B (en) | 2011-12-28 | 2011-12-28 | A kind of mobile terminal and charger, method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110446295.1A Division CN102570546B (en) | 2011-12-28 | 2011-12-28 | A kind of mobile terminal and charger, method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105703430A CN105703430A (en) | 2016-06-22 |
| CN105703430B true CN105703430B (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610125483.7A Active CN105703430B (en) | 2011-12-28 | 2011-12-28 | A kind of charging method, mobile terminal, charging equipment and system |
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| Country | Link |
|---|---|
| CN (1) | CN105703430B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3056035A1 (en) * | 2016-09-14 | 2018-03-16 | Stmicroelectronics (Grenoble 2) Sas | METHOD AND SYSTEM FOR MANAGING THE POWER SUPPLY VOLTAGE OF A TYPE C USB SOURCE DEVICE |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881739A (en) * | 2005-06-17 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Charge mode control circuit and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100487622B1 (en) * | 2003-04-25 | 2005-05-03 | 엘지전자 주식회사 | Device and the Method for variating the charging current of battery |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1881739A (en) * | 2005-06-17 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Charge mode control circuit and method |
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| CN105703430A (en) | 2016-06-22 |
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