CN104600774B - Charging recognition circuit, charging recognition method, data line and mobile terminal - Google Patents
Charging recognition circuit, charging recognition method, data line and mobile terminal Download PDFInfo
- Publication number
- CN104600774B CN104600774B CN201410737054.6A CN201410737054A CN104600774B CN 104600774 B CN104600774 B CN 104600774B CN 201410737054 A CN201410737054 A CN 201410737054A CN 104600774 B CN104600774 B CN 104600774B
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- Prior art keywords
- mobile terminal
- data wire
- seat
- terminals
- charging
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Classifications
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/30—Charge provided using DC bus or data bus of a computer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a charging recognition circuit, a charging recognition method, a data line and a mobile terminal. The charging recognition circuit comprises a mobile terminal part circuit and a data line part circuit; the mobile terminal part circuit comprises a main control chip CPU (Central Processing Unit) and a mobile terminal plug; an ADC (Analog To Digital Converter) terminal of the main control chip CPU is connected with an ID (Internal Diameter) terminal of the mobile terminal plug; the data line part circuit comprises a data line plug and a data line socket; an ID terminal of the data line socket is connected with a metal casing of the data line plug; the data line socket is in insertion joint with the mobile terminal plug in a matched mode; the voltage of the ID terminal of the mobile terminal plug is detected by the main control chip CPU through the ADC terminal so as to identify a charging signal. According to the charging recognition circuit, the charging recognition method, the data line and the mobile terminal, the voltage of the ID terminal of the mobile terminal plug is detected to identify the charging signal and accordingly the problem that the transmission speed is reduced due to the fact that an identification signal is transmitted through D plus or D minus is solved.
Description
Technical field
The present invention relates to the technical field charged to mobile terminal, is specifically related to a kind of charging identification circuit, charges and know
Other method, data wire and its mobile terminal.
Background technology
Data transfer and charge function mobile device using during be typically all using a kind of line realizing, because
This, will be related to recognize that the data wire is asking for charge function to be realized or transmission data function in the use of data wire
Topic.In the prior art, data wire is charged method for distinguishing is known typically using D+ or D- ends transmission identification signal, it is this to pass through
Transmission identification signal in D+ or D- ends can affect the data transmission procedure of USB come the method being identified that charges on data wire.
Refer to Fig. 1, Fig. 1 is a kind of schematic diagram of prior art charging circuit, in the technical scheme be exactly using D- with
ADC1 ends connect, and transmit ADC1 of the identification signal to mobile terminal by D- ends, and then recognize charger identification and charging wire；This
The identification problem that although technical scheme can solve the problem that charger and charging wire is planted, but the impedance matching existed when factor data is transmitted is sent out
Changing and cause the problem of distortions of transmitted data.
Fig. 2 is referred to, Fig. 2 is the schematic diagram of another kind of prior art charging circuit, it will be apparent from this figure that the technology
Scheme is additionally arranged speed-sensitive switch, realizes the identification process to charger and charging wire, but the skill by the switching of speed-sensitive switch
Art scheme increases considerably cost due to being additionally arranged speed-sensitive switch, in addition, how speed-sensitive switch select it is improper if,
Having to affect the transmitting procedure of data.
The content of the invention
The embodiment of the present invention provides a kind of charging identification circuit, charging recognition methodss, data wire and its mobile terminal, to solve
Certainly because affecting data transfer using D+ or D- ends transmission identification signal and making because setting up speed-sensitive switch in prior art
The technical problem that cost increases.
For solving the above problems, a kind of charging identification circuit, the charging identification circuit bag is embodiments provided
Include：Mobile terminal partial circuit and data wire partial circuit, wherein, mobile terminal partial circuit includes main control chip CPU and shifting
Dynamic terminal male seat, the ADC terminals of the main control chip CPU are connected with the ID terminals of the mobile terminal male seat；Data wire part
Circuit includes data wire male seat and data wire female seat, outside the ID terminals of the data wire female seat and the metal of the data wire male seat
Shell connects；The data wire female seat coordinates grafting, the main control chip CPU to pass through the ADC ends with the mobile terminal male seat
The voltage of the ID terminals of the son detection mobile terminal male seat, and then identify charging signals.
According to one preferred embodiment of the present invention, the charging identification circuit also includes charger female seat, and the charger is female
Metal shell one end ground connection of seat, the other end are connected with the metal shell of the data wire male seat.
According to one preferred embodiment of the present invention, the mobile terminal partial circuit is also included by earth resistance and the master
The micro-chip processor MPU of control chip CPU parallel.
According to one preferred embodiment of the present invention, outside the metal of the ID terminals of the data wire female seat and the data wire male seat
Earth resistance between shell is R2, the earth resistance of the metal shell of the charger female seat is R3, the output of the charger female seat
Voltage is U, and the main control chip CPU passes through to judge the voltage U of the mobile terminal male seat ID terminal1Whether it is the ground connection electricity
Resistance R1With the earth resistance R2And R3Partial pressure value in parallel is recognizing the charging signals.
According to one preferred embodiment of the present invention, the output voltage V0 of the charger female seat and the mobile terminal male seat
ID terminal voltage U1Between meet below equation：U1=V0R2R3/(R1R2+R2R3+R1R3), wherein, V0 is common voltage.
For solving above-mentioned technical problem, the present invention also provides a kind of charging recognition methodss, and the charging recognition methodss include：
The ADC terminals of the main control chip CPU of mobile terminal are connected with the ID terminals of mobile terminal male seat, the ID terminals of data wire female seat with
The metal shell connection of data wire male seat, the data wire female seat coordinate grafting, the master control core with the mobile terminal male seat
Voltages of the piece CPU by the ID terminals of mobile terminal male seat described in the ADC terminal tests, and then identify charging signals.
According to one preferred embodiment of the present invention, metal shell one end ground connection of charger female seat, the other end and the data
The metal shell connection of line male seat, the mobile terminal are also included by earth resistance R1With the main control chip CPU parallel
Earth resistance between the metal shell of micro-chip processor MPU, the ID terminals of the data wire female seat and the data wire male seat is
R2, the earth resistance of the metal shell of the charger female seat is R3, the output voltage of the charger female seat is U, the master control
Chip CPU passes through to judge the voltage U of the mobile terminal male seat ID terminal1Whether it is the earth resistance R1With the ground connection electricity
Resistance R2And R3Partial pressure value in parallel is recognizing the charging signals.
According to one preferred embodiment of the present invention, the output voltage V0 of the charger female seat and the mobile terminal male seat
ID terminal voltage U1Between meet below equation：U1=V0R2R3/(R1R2+R2R3+R1R3), wherein, V0 is common voltage.
For solving above-mentioned technical problem, the present invention also provides a kind of data wire, the ID terminals of the data wire female seat and institute
State the metal shell connection of data wire male seat, the ID terminals of the data wire female seat and the metal shell of the data wire male seat
Earth resistance is R2。
For solving above-mentioned technical problem, the present invention also provides a kind of mobile terminal, wherein, the master control core of the mobile terminal
The ADC terminals of piece CPU are connected with the ID terminals of mobile terminal male seat, and micro-chip processor MPU passes through earth resistance R1With the master
Control chip CPU parallel, electricity of the main control chip CPU by the ID terminals of mobile terminal male seat described in the ADC terminal tests
Pressure, and then identify charging signals.
The mobile terminal main control chip CPU of the charging identification circuit provided relative to prior art, the present invention passes through ADC ends
The voltage of the ID terminals of son detection mobile terminal male seat identifying charging signals, solve in prior art because using D+ or
The transmission of D- ends recognizes signal and affects data transfer and make the technical problem of cost increase because setting up speed-sensitive switch.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of schematic diagram of prior art charging circuit；
Fig. 2 is the schematic diagram of another kind of prior art charging circuit；
Fig. 3 is the schematic diagram of one preferred embodiment of charging identification circuit of the present invention；And
Fig. 4 be Fig. 4 be data wire embodiment of the present invention wire rod sectional view.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is described in further detail.It is emphasized that following implement
Example is merely to illustrate the present invention, but the scope of the present invention is not defined.Likewise, following examples are only the portion of the present invention
Point embodiment and not all embodiments, the institute obtained under the premise of creative work is not made by those of ordinary skill in the art
There are other embodiments, belong to the scope of protection of the invention.
Refer to Fig. 3, Fig. 3 is the schematic diagram of one preferred embodiment of charging identification circuit of the present invention, the charging identification circuit
Including mobile terminal partial circuit 1 and data wire partial circuit 2.
Specifically, the mobile terminal partial circuit 1 includes main control chip CPU 11 and mobile terminal male seat 12, wherein,
The ADC terminals of main control chip CPU11, USB-DM (USB Data Minus, usb data negative signal) terminal, USB-DP (USB
Data Positive, usb data positive signal) terminal ID terminals respectively with mobile terminal male seat 12, D- terminals and D+ terminals
Connect one to one.
The data wire part parallel circuit 2 includes data wire male seat 21 and data wire female seat 22, wherein, the ID of data wire female seat 22
Terminal, VBUS terminals, D- terminals, D+ terminals metal shell (PM, Package of Metal) respectively with data wire male seat 21,
VBUS terminals, D- terminals and D+ terminals connect one to one.
Wherein, data wire female seat 22 coordinates grafting, main control chip CPU11 to examine by ADC terminals with mobile terminal male seat 12
The voltage of the ID terminals of mobile terminal male seat 12 is surveyed, and then identifies charging signals.
Preferably, the charging identification circuit also includes charger female seat 31, the metal shell (PM) of the charger female seat 31
One end is grounded, and the other end is connected with the metal shell of data wire male seat 21, wherein, the PM (package in charger female seat 31
Of metal) pin be female seat plug surface metal；PM pins in data wire male seat 21 are the plug surface metals of male seat.
In addition, mobile terminal partial circuit is also included by earth resistance R1The microprocessor in parallel with main control chip CPU11
Chip MPU 13, wherein, micro-chip processor MPU 13 is used for managing the discharge and recharge of battery, the pin electricity of micro-chip processor MPU
Pressure can be 2.8V.
Further, the earth resistance between the ID terminals of data wire female seat 22 and the metal shell of data wire male seat 21 is
R2, the earth resistance of the metal shell of charger female seat 31 is R3, the output voltage of charger female seat 31 is U, main control chip CPU
11 by judge mobile terminal male seat 12 ID terminals voltage U1Whether it is earth resistance R1With earth resistance R2And R3In parallel
Partial pressure value is recognizing charging signals.
It is specifically as follows according to the process of calculation, in whole charging identification circuit, earth resistance R2And R3With R after parallel connection1Series connection, number
It is R ', R '=R according to the all-in resistance of line partial circuit 2 and 31 part of charger female seat2×R3/(R2+R3), main control chip CPU 11
By judging the voltage U of the ID terminals of mobile terminal male seat 121Whether U is met1=UR '/(R '+R1), R ' is substituted into into the formula
Have：U1=UR2R3/(R1R2+R2R3+R1R3).Assume that the output voltage U of charger female seat 31 is V0, wherein, V0 is common voltage,
Can be for 5V or 3.7V etc., then main control chip CPU 11 is by detecting the voltage U of the ID terminals of mobile terminal male seat 121=
V0R2R3/(R1R2+R2R3+R1R3) when, you can judgement have charger to be linked in circuit, according to this signal be charging signals, Jin Eryi
Dynamic terminal receives charger and charges.
Charging identification circuit provided in an embodiment of the present invention, passes through ADC terminal tests using mobile terminal main control chip CPU
The voltage of the ID terminals of mobile terminal male seat is solved in prior art because being passed using D+ or D- ends identifying charging signals
Pass identification signal and affect data transfer and make the technical problem of cost increase because setting up speed-sensitive switch.
In addition, the present invention also provides a kind of charging recognition methodss based on above-mentioned charging identification circuit, specially：It is mobile whole
The ADC terminals of the main control chip CPU at end are connected with the ID terminals of mobile terminal male seat, the ID terminals of data wire female seat and data wire
The metal shell connection of male seat；Data wire female seat coordinates grafting, main control chip CPU to examine by ADC terminals with mobile terminal male seat
The voltage of the ID terminals of mobile terminal male seat is surveyed, and then identifies charging signals.
Wherein, metal shell one end ground connection of charger female seat, the other end are connected with the metal shell of data wire male seat, are moved
Dynamic terminal is also included by earth resistance R1With the micro-chip processor MPU of main control chip CPU parallel, the ID terminals of data wire female seat
And the earth resistance between the metal shell of data wire male seat is R2, the earth resistance of the metal shell of charger female seat is R3, charge
The output voltage of device female seat is U, and main control chip CPU is by judging the voltage U of mobile terminal male seat ID terminal1Whether it is ground connection electricity
Resistance R1With the earth resistance R2And R3Partial pressure value in parallel is recognizing charging signals.
The output voltage V0 of the charger female seat and ID terminal voltage U of mobile terminal male seat1Between meet below equation：U1
=V0R2R3/(R1R2+R2R3+R1R3).Its calculating process and principle are introduced in the above-described embodiments, and here is omitted.
In prior art, the ID ends of data wire part parallel circuit are generally hanging, for this purpose, a kind of present invention also provides data
The ID terminals of data wire female seat are connected by line, the data wire with the metal shell of data wire male seat, make to compare inside data wire now
There is technology to have more a line, refer to Fig. 4, Fig. 4 is the wire rod sectional view of data wire embodiment of the present invention.
In prior art, the ID lines of Lycoperdon polymorphum Vitt are generally hanging to be arranged, and the application is then by its metal with data wire male seat
Cage connection, and common data wire ratio, charging wire become 5 by 4.Wherein, white and green line are respectively data minus letter
Number and positive signal line, black is earth lead, and red is USB pressure-wires, the outside general PVC (Polyvinyl using black
Chloride polymer, polrvinyl chloride) material parcel.
Wherein, the ID terminals of data wire female seat could be arranged to R with the earth resistance of the metal shell of data wire male seat2。
In addition, the present invention also provides a kind of mobile terminal, the ADC terminals of the main control chip CPU of the mobile terminal and movement
The ID terminals connection of terminal male seat, micro-chip processor MPU pass through earth resistance R1With main control chip CPU parallel, main control chip CPU
By the voltage of the ID terminals of ADC terminal test mobile terminal male seats, and then identify charging signals.For mobile terminal its
His each functional structure skilled artisans appreciate that within the scope of, no longer describe in detail herein.
A kind of embodiment of the present invention is the foregoing is only, is not thereby limited the scope of the invention, every utilization
Equivalent device or equivalent flow conversion that description of the invention and accompanying drawing content are made, or it is related to be directly or indirectly used in other
Technical field, be included within the scope of the present invention.
Claims (4)
1. a kind of charging identification circuit, it is characterised in that the charging identification circuit includes：
Mobile terminal partial circuit, it is including main control chip CPU, mobile terminal male seat and micro-chip processor MPU, wherein, described
The ADC terminals of main control chip CPU are connected with the ID terminals of the mobile terminal male seat, and the micro-chip processor MPU is by ground connection
Resistance R1It is connected with the main control chip CPU parallel；
Data wire part parallel circuit, including data wire male seat and data wire female seat, wherein, the ID terminals of the data wire female seat and institute
State between the metal shell of the metal shell connection of data wire male seat, the ID terminals of the data wire female seat and the data wire male seat
Earth resistance be R2；
Charger female seat, metal shell one end ground connection of the charger female seat, the metal of the other end and the data wire male seat
Cage connection, the earth resistance of the metal shell of the charger female seat is R3, the output voltage of the charger female seat is U；
Wherein, the data wire female seat coordinates grafting with the mobile terminal male seat, and the main control chip CPU is described by judging
The voltage U of mobile terminal male seat ID terminal1Whether it is the earth resistance R1With the earth resistance R2And R3Partial pressure value in parallel
To recognize the charging signals.
2. charge identification circuit according to claim 1, it is characterised in that the output voltage V0 of the charger female seat and institute
State the ID terminal voltage U of mobile terminal male seat1Between meet below equation：U1=V0R2R3/(R1R2+R2R3+R1R3), wherein, V0
For common voltage.
3. a kind of charging recognition methodss, it is characterised in that the charging recognition methodss include：
The ADC terminals of the main control chip CPU of mobile terminal are connected with the ID terminals of mobile terminal male seat, and micro-chip processor MPU leads to
Cross earth resistance R1It is connected with main control chip CPU parallel,
The ID terminals of data wire female seat are connected with the metal shell of data wire male seat, and the ID terminals of data wire female seat and data wire are public
Earth resistance between the metal shell of seat is R2；
The data wire female seat coordinates metal shell one end of grafting, charger female seat to be grounded with the mobile terminal male seat, separately
One end is connected with the metal shell of data wire male seat, and the earth resistance of the metal shell of charger female seat is R3, the charger
The output voltage of female seat is U, and the main control chip CPU is by judging the voltage U of the mobile terminal male seat ID terminal1It is whether
The earth resistance R1With the earth resistance R2And R3Partial pressure value in parallel is recognizing the charging signals.
4. charging recognition methodss according to claim 3, it is characterised in that the output voltage V0 of the charger female seat with
The ID terminal voltage U of the mobile terminal male seat1Between meet below equation：U1=V0R2R3/(R1R2+R2R3+R1R3), wherein,
V0 is common voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737054.6A CN104600774B (en) | 2014-12-05 | 2014-12-05 | Charging recognition circuit, charging recognition method, data line and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737054.6A CN104600774B (en) | 2014-12-05 | 2014-12-05 | Charging recognition circuit, charging recognition method, data line and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104600774A CN104600774A (en) | 2015-05-06 |
| CN104600774B true CN104600774B (en) | 2017-03-22 |
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| CN201410737054.6A Active CN104600774B (en) | 2014-12-05 | 2014-12-05 | Charging recognition circuit, charging recognition method, data line and mobile terminal |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882924B (en) * | 2015-05-11 | 2018-08-03 | 深圳天珑无线科技有限公司 | The identification equipment that charges and its recognition methods |
| CN105071484B (en) * | 2015-08-25 | 2018-11-20 | 广东欧珀移动通信有限公司 | A kind of charging method and device of the terminal with data exchanging function |
| CN105429217B (en) * | 2015-12-08 | 2018-05-29 | 深圳天珑无线科技有限公司 | A kind of method for identifying the system of charger and its identifying charger |
| CN106026228B (en) * | 2016-05-26 | 2019-02-15 | 维沃移动通信有限公司 | A kind of charging USB line, adapter and mobile terminal |
| CN106329618B (en) * | 2016-08-30 | 2018-12-07 | 北京奇虎科技有限公司 | Charger end USB charging control circuit and terminal USB charging control circuit |
| CN106787011A (en) * | 2017-03-03 | 2017-05-31 | 北京奇虎科技有限公司 | Charge remaining time display methods, device and terminal device |
| CN106655415B (en) * | 2017-03-14 | 2021-01-22 | 成都智朴思互联科技有限公司 | Intelligent universal charging identification and control device based on USB interface |
| CN107247179A (en) * | 2017-05-03 | 2017-10-13 | 北京世纪龙脉科技有限公司 | A kind of voltage detecting circuit of USB device |
| CN107276159B (en) * | 2017-06-27 | 2019-10-18 | 维沃移动通信有限公司 | A kind of battery charge controller, method and mobile terminal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020007585A (en) * | 2000-07-18 | 2002-01-29 | 이순 | Battery charging circuit for high power wireless handsets and charging method thereof |
| CN101316042B (en) * | 2007-05-29 | 2012-07-18 | 深圳迈瑞生物医疗电子股份有限公司 | Safety control system for backup battery interface of medical equipment |
| CN101102119B (en) * | 2007-07-17 | 2011-08-10 | 青岛海信移动通信技术股份有限公司 | A charging detection circuit of appliance device and charging detection method |
| CN102306853B (en) * | 2011-08-10 | 2014-08-06 | 深圳市力可普尔电子有限公司 | Intelligently-identified charging method and device as well as connector |
| CN103117465B (en) * | 2013-02-26 | 2015-09-30 | 周法勇 | A kind of multifrnction connector |
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