CN105429217B - A kind of method for identifying the system of charger and its identifying charger - Google Patents
A kind of method for identifying the system of charger and its identifying charger Download PDFInfo
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- CN105429217B CN105429217B CN201510900047.8A CN201510900047A CN105429217B CN 105429217 B CN105429217 B CN 105429217B CN 201510900047 A CN201510900047 A CN 201510900047A CN 105429217 B CN105429217 B CN 105429217B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007600 charging Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- 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
The invention discloses a kind of methods for identifying the system of charger and its identifying charger.The system includes mobile equipment, data cable and charger, mobile equipment obtains second voltage of first voltages and interface D+ of the interface D in first time in first time by data cable, and judges whether first voltage is located in the range of default first threshold and whether second voltage is located in the range of default second threshold；If, it then moves equipment and fourth voltage of tertiary voltages and interface D+ of the interface D in the second time in the second time is obtained by data cable, and judge whether tertiary voltage is located in default 3rd threshold range and whether the 4th voltage is located in default 4th threshold range；If so, mobile equipment judges charger matched mobile equipment.In the above manner, the present invention can avoid mobile equipment from improving the battery life of mobile equipment to the misrecognition of charger.
Description
Technical field
The present invention relates to charging technique fields, charge more particularly to a kind of for identifying the system of charger and its identifying
The method of device.
Background technology
In existing mobile equipment, mobile equipment by obtaining the identification signal of the interface D+ and interface D- of charger,
And judge whether charger matches according to identification signal.But since the voltage of charger has error range, and charge
The number that device uses increases, and the initial voltage of charger has superposition, and mobile equipment is caused to generate erroneous judgement.
The content of the invention
The invention mainly solves the technical problem of providing a kind of for identifying the system of charger and its identification charger
Method, to solve the above problems.
In order to solve the above technical problems, one aspect of the present invention is：One kind is provided for identifying charger
System, including mobile equipment, data cable and charger, mobile equipment is connected by data cable with charger；Charger
Including interface D- and interface D+, mobile equipment obtains first voltages and interface D+ of the interface D- in first time by data cable and exists
The second voltage of first time, and judge first voltage whether be located at default first threshold in the range of and second voltage whether position
In the range of default second threshold；If so, mobile equipment obtains threeth electricity of the interface D- in the second time by data cable
Pressure and fourth voltages of the interface D+ in the second time, and judge whether tertiary voltage is located in default 3rd threshold range and the
Whether four voltages are located in default 4th threshold range；If so, mobile equipment judges charger matched mobile equipment.
Wherein, charger includes interface Vbus and identification circuit, and identification circuit includes first resistor, second resistance, first
Thermistor and the second thermistor, one end of first resistor are connected with interface Vbus, the other end and interface of first resistor
D- connections, one end of second resistance are connected with interface Vbus, and the other end of second resistance is connected with interface D+, the first thermistor
One end be connected with interface D-, one end of the second thermistor is connected with interface D+, the other end of the first thermistor and second
The other end ground connection of thermistor.
Wherein, first voltages of the interface D- in first time meets the following formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- in the second time meets the following formula：
VD'-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of interface Vbus；RT1 is resistance value of first thermistor in first time；RT1'
For the first thermistor the second time resistance value；RT2 is resistance value of second thermistor in first time；RT2' is
Two thermistors are in the resistance value of the second time；R1 is the resistance value of first resistor；R2 is the resistance value of second resistance.
Wherein, the first thermistor and the second thermistor are NTC thermistor, the resistance value of the first thermistor and
The resistance value of second thermistor is with the temperature change of charger.
Wherein, mobile equipment includes processor, and the interface USB_DM of processor is connected by data cable with interface D-, handles
The interface USB_PM of device is connected by data cable with interface D+, and processor is used to judge whether first voltage is located at default first
Whether it is located in threshold range with second voltage in the range of default second threshold；If so, processor judges that tertiary voltage is
It is no to be located in default 3rd threshold range with whether the 4th voltage is located in default 4th threshold range；If so, processing
Device judges charger matched mobile equipment.
Wherein, mobile equipment further comprises 3rd resistor and microprocessor, and microprocessor is by 3rd resistor with charging
The interface PM connections of device, the interface ADC of processor are connected with interface PM.
Wherein, charger further comprises the 4th resistance, and interface PM passes through the 4th resistance eutral grounding.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of identification charger is provided
Method, including：
Mobile equipment obtains the first voltage and interface D+ of the interface D- of charger in first time the of first time
Two voltages, and judge whether first voltage is located in the range of default first threshold and whether second voltage is located at default second
In threshold range；
If so, mobile equipment obtain interface D- the second time tertiary voltage and interface D+ the second time the 4th electricity
Pressure, and judge whether tertiary voltage is located in default 3rd threshold range and whether the 4th voltage is located at default 4th threshold value
In the range of；
If so, mobile equipment judges charger matched mobile equipment.
Wherein, first voltages of the interface D- in first time meets the following formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- in the second time meets the following formula：
VD'-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of the interface Vbus of charger；RT1 is resistance of first thermistor in first time
Value；RT1' is resistance value of first thermistor in the second time；RT2 is resistance value of second thermistor in first time；
RT2' is resistance value of second thermistor in the second time；R1 is the resistance value of first resistor；R2 is the resistance of second resistance
Value.
Wherein, the first thermistor and the second thermistor are NTC thermistor, the resistance value of the first thermistor and
The resistance value of second thermistor is with the temperature change of charger.
The beneficial effects of the invention are as follows：The situation of the prior art is different from, mobile equipment of the invention is obtained by data cable
Take first voltage and interface D+ second voltages in first time of the interface D- in first time, and judge first voltage whether position
Whether it is located in the range of default first threshold with second voltage in the range of default second threshold；If so, mobile equipment
Tertiary voltage and interface D+ fourth voltages in second time of the interface D- in the second time is obtained by data cable, and judges the
Whether three voltages are located in default 3rd threshold range and whether the 4th voltage is located in default 4th threshold range；If
It is then to move equipment to judge charger matched mobile equipment；Mobile equipment is recognized charger, and then avoids moving
Equipment is to the misrecognition of charger, the battery life of the mobile equipment of raising.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can further be obtained according to these attached drawings
Other attached drawings.Wherein：
Fig. 1 is the structure diagram for being used to identify the system of charger of first embodiment of the invention；
Fig. 2 is the circuit diagram of the identification circuit of second embodiment of the invention；
Fig. 3 is the structure diagram for being used to identify the system of charger of second embodiment of the invention；
Fig. 4 is the flow chart of the method for the revealed identification charger of first embodiment of the invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment rather than whole embodiments of the present invention.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other under the premise of performing creative labour is not made
Embodiment belongs to the scope of protection of the invention.
Shown in Figure 1, Fig. 1 is the structural representation for being used to identify the system of charger of first embodiment of the invention
Figure.The revealed system of the present embodiment is for identifying whether charger matches mobile terminal, to improve the battery longevity of mobile equipment
Life.As shown in Figure 1, the system includes：Charger 11, data cable 12 and mobile equipment 13, mobile equipment 13 can be mobile phone,
Tablet computer, laptop etc..
It moves equipment 13 to be connected with charger 11 by data cable 12, for judging charger 11 whether with moving equipment 13
It is matched.Wherein, charger 11 includes interface D+, interface D-, interface PM, interface Vbus and interface GND, and data cable 12 is with filling
One end that electric appliance 11 connects is correspondingly provided with interface D+, interface D-, interface PM, interface Vbus and interface GND.Mobile equipment 13
Including interface D+, interface D-, interface ID, interface Vbus and interface GND, one end phase that data cable 12 is connected with mobile equipment 13
Interface D+, interface D-, interface ID, interface Vbus and interface GND should be provided with.
Wherein, mobile equipment 13 obtains first voltages and interface D+ of the interface D- in first time the by data cable 12
The second voltage of one time moves the interface D- for the interface D- acquisition chargers 11 that equipment 13 passes through data cable 12 at first
Between first voltage and second electricity of the interface D+ in first time of charger 11 is obtained by the interface D+ of data cable 12
Pressure.Mobile equipment 13 judges whether first voltage is located in the range of default first threshold and whether second voltage is positioned at default
In the range of second threshold；It is located at if so, i.e. mobile equipment 13 determines first voltage in the range of default first threshold and the
Two voltages are located in the range of default second threshold, then move equipment 13 and obtain interface D- in the second time by data cable 12
The 4th voltage of tertiary voltage and interface D+ in the second time moves equipment 13 and obtains charging by the interface D- of data cable 12
Tertiary voltages of the interface D- of device 11 in the second time and the interface D+ by data cable 12 obtain the interface D+ of charger 11
In the 4th voltage of the second time.Mobile equipment 13 judges whether tertiary voltage is located in default 3rd threshold range and the 4th
Whether voltage is located in default 4th threshold range；If so, i.e. mobile equipment 13, which determines tertiary voltage, is located at default the
In three threshold ranges and the 4th voltage is located in default 4th threshold range, then moves equipment 13 and judge that charger 11 matches
Mobile equipment 13.Wherein, it is unequal with the second time at the first time.
Compared with prior art, the present embodiment is recognized charger 11 by mobile equipment 13, to avoid
Mobile equipment 13 is to the misrecognition of charger 11, the battery life of the mobile equipment 13 of raising.
The present invention also provides second embodiment for the system that identifies charger, the present embodiment revealed system is based on
The revealed system of first embodiment is described.As shown in Fig. 2, charger 11 further comprises identification circuit 111, wherein,
Identification circuit 111 includes first resistor R1, second resistance R2, the first thermistor RT1 and the second thermistor RT2, and first
One end of resistance R1 is connected with the interface Vbus of charger 11, and the other end of first resistor R1 connects with the interface D- of charger 11
It connects, one end of second resistance R2 is connected with the interface Vbus of charger 11, the other end of second resistance R2 and connecing for charger 11
Mouthful D+ connections, one end of the first thermistor RT1 are connected with the interface D- of charger 11, one end of the second thermistor RT2 and
The other end ground connection of the interface D+ connections of charger 11, the other end of the first thermistor RT1 and the second thermistor RT2.Its
In, the first thermistor RT1 and the second thermistor RT2 be NTC (Negative Temperature Coefficient,
Negative temperature coefficient) thermistor, the resistance value of the resistance value of the first thermistor RT1 and the second thermistor RT2 is with filling
The temperature change of electric appliance 11.
Wherein, first voltages of the interface D- of charger 11 in first time meets the following formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ of charger 11 in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- of charger 11 in the second time meets the following formula：
VD'-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ of charger 11 in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of the interface Vbus of charger 11；RT1 is the first thermistor RT1 at the first time
Resistance value；RT1' is resistance values of the first thermistor RT1 in the second time；RT2 is the second thermistor RT2 at first
Between resistance value；RT2' is resistance values of the second thermistor RT2 in the second time；R1 is the resistance value of first resistor R1；R2
For the resistance value of second resistance R2.
After the work a period of time of charger 11, the temperature of charger 11 changes, therefore the first thermistor RT1
Unequal in the resistance value of the second time with the first thermistor RT1 in the resistance value of first time, the second thermistor RT2 exists
The resistance value of first time is also unequal in the resistance value of the second time with the second thermistor RT2.
As shown in figure 3, mobile equipment 13 further comprises 3rd resistor R3, processor 131 and microprocessor 132, fill
Electric appliance 11 further comprises the 4th resistance R4, and data cable 12 includes the 5th resistance R5.
Wherein, the interface USB_DM of processor 131 is connected by data cable 12 with the interface D- of charger 11, processor
131 interface USB_PM is connected by data cable 12 with the interface D+ of charger 11, and processor 131 is used to judge that first voltage is
It is no to be located in the range of default first threshold with whether second voltage is located in the range of default second threshold；If so, processing
Device 131 judges whether tertiary voltage is located in default 3rd threshold range and whether the 4th voltage is located at default 4th threshold value
In the range of；If so, processor 131 judges the mobile equipment 13 of the matching of charger 11.
Microprocessor 132 is connected by 3rd resistor R3 with the interface PM of charger 11, the interface ADC of processor 131 with
The interface PM connections of charger 11.One end of 5th resistance R5 is connected with the interface PM of charger 11, and the 5th resistance R5's is another
End ground connection.The interface PM of charger 11 is grounded by the 4th resistance R4.
Wherein microprocessor 132 is used to provide a voltage for 3rd resistor R3, in mobile equipment 13 not over data cable
12 with charger 11 when being connected, and the interface ADC of processor 131 is high level, the interface USB_DM of processor 131 and processing at this time
The interface USB_PM of device 131 is stopped.When mobile equipment 13 is connected by data cable 12 with charger 11, processor 131
Interface ADC for low level, the interface USB_DM of processor 131 passes through data cable 12 at this time and the interface D- of charger 11 connects
It connects, the interface USB_PM of processor 131 is connected by data cable 12 with the interface D+ of charger 11.
The present invention also provides the method for the revealed identification charger of first embodiment, based on disclosed in above-described embodiment
System.As shown in figure 4, the revealed method of the present embodiment comprises the following steps：
S401：Mobile equipment 13 obtains the first voltage and interface D+ of the interface D- of charger 11 in first time first
The second voltage of time, and judge whether first voltage is located in the range of default first threshold and whether second voltage is located in advance
If second threshold in the range of；
S402：If so, mobile equipment 13 obtains tertiary voltages and interface D+ of the interface D- in the second time in the second time
The 4th voltage, and judge tertiary voltage whether be located at default 3rd threshold range in and the 4th voltage whether be located at it is default
In 4th threshold range；
S403：If so, mobile equipment 13 judges the mobile equipment of the matching of charger 11.
In S401, mobile equipment 13 obtains the interface D- of charger 11 at the first time by the interface D- of data cable 12
First voltage and second voltages of the interface D+ in first time of charger 11 is obtained by the interface D+ of data cable 12.
In S402, mobile equipment 13 determines first voltage and is located in the range of default first threshold and second voltage
In the range of default second threshold, then the interface D- that equipment 13 obtains charger 11 by the interface D- of data cable 12 is moved
Tertiary voltage in the second time and the interface D+ by data cable 12 obtain the interface D+ of charger 11 in the second time
4th voltage.
In S403, mobile equipment 13 determines tertiary voltage and is located at that default 3rd threshold range is interior and the 4th voltage
In default 4th threshold range, then move equipment 13 and judge the mobile equipment 13 of the matching of charger 11.Wherein, at the first time
It is unequal with the second time.
Wherein, first voltages of the interface D- of charger 11 in first time meets the following formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ of charger 11 in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- of charger 11 in the second time meets the following formula：
VD'-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ of charger 11 in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of the interface Vbus of charger 11；RT1 is the first thermistor RT1 at the first time
Resistance value；RT1' is resistance values of the first thermistor RT1 in the second time；RT2 is the second thermistor RT2 at first
Between resistance value；RT2' is resistance values of the second thermistor RT2 in the second time；R1 is the resistance value of first resistor R1；R2
For the resistance value of second resistance R2.
First thermistor and the second thermistor are NTC thermistor, the resistance value of the first thermistor and second
The resistance value of thermistor is with the temperature change of charger.
Wherein, the first thermistor RT1 and the second thermistor RT2 is NTC thermistor, the first thermistor RT1
Resistance value and the second thermistor RT2 resistance value with the temperature change of charger 11.
In conclusion the present invention is recognized charger 11 by mobile equipment 13, to avoid mobile equipment 13
To the misrecognition of charger 11, the battery life of the mobile equipment 13 of raising.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of system for identifying charger, which is characterized in that the system comprises mobile equipment, data cable and chargings
Device, the mobile equipment are connected by the data cable with the charger；The charger includes interface D- and interface D+, institute
It states mobile equipment and the interface D- is obtained in the first voltage of first time and the interface D+ described by the data cable
The second voltage of first time, and judge whether the first voltage is located in the range of default first threshold and described second is electric
Whether pressure is located in the range of default second threshold；If so, the mobile equipment obtains the interface by the data cable
Tertiary voltage and the interface D+ fourth voltages in second time of the D- in the second time, and judge the tertiary voltage
Whether it is located in default 3rd threshold range and whether the 4th voltage is located in default 4th threshold range；If so,
Then the mobile equipment judges the charger matched mobile equipment.
2. system according to claim 1, which is characterized in that the charger includes interface Vbus and identification circuit, institute
State identification circuit include first resistor, second resistance, the first thermistor and the second thermistor, the one of the first resistor
End is connected with the interface Vbus, and the other end of the first resistor is connected with the interface D-, one end of the second resistance
It being connected with the interface Vbus, the other end of the second resistance is connected with the interface D+, and the one of first thermistor
End is connected with the interface D-, and one end of second thermistor is connected with the interface D+, first thermistor
The other end of the other end and second thermistor is grounded.
3. system according to claim 2, which is characterized in that the interface D- first time first voltage meet with
Lower formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- in the second time meets the following formula：
V′D-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of the interface Vbus；RT1 is resistance value of first thermistor in first time；
RT1' is resistance value of first thermistor in the second time；RT2 is electricity of second thermistor in first time
Resistance value；RT2' is resistance value of second thermistor in the second time；R1 is the resistance value of the first resistor；R2 is institute
State the resistance value of second resistance.
4. system according to claim 2, which is characterized in that first thermistor and second thermistor are equal
For NTC thermistor, the resistance value of the resistance value of first thermistor and second thermistor is filled with described
The temperature change of electric appliance.
5. system according to claim 1, which is characterized in that the mobile equipment includes processor, the processor
Interface USB_DM is connected by the data cable with the interface D-, and the interface USB_PM of the processor passes through the data cable
Be connected with the interface D+, the processor for judge the first voltage whether be located at default first threshold in the range of and
Whether the second voltage is located in the range of default second threshold；If so, the processor judges that the tertiary voltage is
It is no to be located in default 3rd threshold range with whether the 4th voltage is located in default 4th threshold range；If so,
The processor judges the charger matched mobile equipment.
6. system according to claim 5, which is characterized in that the mobile equipment further comprises 3rd resistor and Wei Chu
Device is managed, the microprocessor is connected by the 3rd resistor with the interface PM of the charger, the interface ADC of the processor
It is connected with the interface PM.
7. system according to claim 6, which is characterized in that the charger further comprises the 4th resistance, described to connect
Mouth PM passes through the 4th resistance eutral grounding.
A kind of 8. method for identifying charger, which is characterized in that the described method includes：
Mobile equipment obtains the first voltage and interface D+ of the interface D- of charger in first time the of the first time
Two voltages, and judge whether the first voltage is located in the range of default first threshold and whether the second voltage is located in advance
If second threshold in the range of；
If so, the mobile equipment obtains the interface D- in the tertiary voltage of the second time and the interface D+ described second
The 4th voltage of time, and judge whether the tertiary voltage is located in default 3rd threshold range and the 4th voltage is
It is no to be located in default 4th threshold range；
If so, the mobile equipment judges the charger matched mobile equipment.
9. according to the method described in claim 8, it is characterized in that, the charger includes interface Vbus and identification circuit, institute
State identification circuit include first resistor, second resistance, the first thermistor and the second thermistor, the one of the first resistor
End is connected with the interface Vbus, and the other end of the first resistor is connected with the interface D-, one end of the second resistance
It being connected with the interface Vbus, the other end of the second resistance is connected with the interface D+, and the one of first thermistor
End is connected with the interface D-, and one end of second thermistor is connected with the interface D+, first thermistor
The other end of the other end and second thermistor is grounded, and first voltages of the interface D- in first time meets following public
Formula：
VD-=Vbus*RT1/ (RT1+R1)
Second voltages of the interface D+ in first time meets the following formula：
VD+=Vbus*RT2/ (RT2+R2)
Tertiary voltages of the interface D- in the second time meets the following formula：
V′D-=Vbus*RT1'/(RT1'+R1)
Fourth voltages of the interface D+ in the second time meets the following formula：
V′D+=Vbus*RT2'/(RT2'+R2)
Wherein, Vbus is the voltage value of the interface Vbus of the charger；RT1 is resistance of first thermistor in first time
Value；RT1' is resistance value of first thermistor in the second time；RT2 is resistance of second thermistor in first time
Value；RT2' is resistance value of second thermistor in the second time；R1 is the resistance value of the first resistor；R2 is described
The resistance value of second resistance.
10. according to the method described in claim 9, it is characterized in that, first thermistor and second thermistor
It is NTC thermistor, the resistance value of the resistance value of first thermistor and second thermistor is with described
The temperature change of charger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900047.8A CN105429217B (en) | 2015-12-08 | 2015-12-08 | A kind of method for identifying the system of charger and its identifying charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900047.8A CN105429217B (en) | 2015-12-08 | 2015-12-08 | A kind of method for identifying the system of charger and its identifying charger |
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| CN105429217A CN105429217A (en) | 2016-03-23 |
| CN105429217B true CN105429217B (en) | 2018-05-29 |
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|---|---|---|---|---|
| CN106026228B (en) * | 2016-05-26 | 2019-02-15 | 维沃移动通信有限公司 | A charging USB cable, adapter and mobile terminal |
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