CN103944224B - The automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system - Google Patents

The automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system Download PDF

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Publication number
CN103944224B
CN103944224B CN201410145665.1A CN201410145665A CN103944224B CN 103944224 B CN103944224 B CN 103944224B CN 201410145665 A CN201410145665 A CN 201410145665A CN 103944224 B CN103944224 B CN 103944224B
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China
Prior art keywords
unit
terminal
automatic identification
self
mcu
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CN103944224A (en
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朱晓敏
胡海勇
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SHENZHEN HALI-POWER INDUSTRIAL Co Ltd
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SHENZHEN HALI-POWER INDUSTRIAL Co Ltd
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Priority to CN201410145665.1A priority Critical patent/CN103944224B/en
Priority to CN201420174074.2U priority patent/CN203813481U/en
Publication of CN103944224A publication Critical patent/CN103944224A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

The present invention provides the automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system, comprising: self-adaptation terminal OTG system element, automatic identification terminal charging unit, Intelligent Recognition adaptor charge power supply Administrative Unit, MCU control unit, battery core protect unit, DC-DC voltage increase and current constant unit, store management unit, MCU for electric unit, Simulation with I C for electric unit, OTG data line unit ten unit. Mobile power supply automatic identification terminal charging, self-adaptation terminal OTG system are used for the present invention to the automatic identification terminal charging of exterior terminal, and terminal is connected mutual communication with terminal perfection.

Description

The automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system
Technical field
The present invention relates to a kind of mobile power supply, particularly relate to the automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system.
Background technology
Existing mobile power supply only has charge function, and purposes is more single.
Summary of the invention
In order to solve problem in prior art, the present invention provides the automatic identification terminal charging of a kind of mobile power supply, self-adaptation terminal OTG system, comprising: self-adaptation terminal OTG system element, automatic identification terminal charging unit, Intelligent Recognition adaptor charge power supply Administrative Unit, MCU control unit, battery core protect unit, DC-DC voltage increase and current constant unit, store management unit, MCU for electric unit, Simulation with I C for electric unit, OTG data line unit ten unit;
Intelligent Recognition adaptor charge power supply Administrative Unit connects battery core protection unit, for battery core protects the inside lithium battery core charging of unit, charge mode controls by MCU control unit, and Intelligent Recognition adaptor charge power supply Administrative Unit connects self-adaptation terminal OTG system element and automatic identification terminal charging unit carries out data communication;
DC-DC voltage increase and current constant unit protects the boost in voltage of unit battery core, for Simulation with I C powers for electric unit, self-adaptation terminal OTG system element, automatically identification terminal charging unit and store management unit, DC-DC voltage increase and current constant unit protects the output of unit to produce to exterior terminal by automatic identification terminal charging unit internal control by energy battery core;
Store management unit is connected with automatic identification terminal charging unit and carries out data communication;
MCU control unit is connected for electric unit, DC-DC voltage increase and current constant unit, automatically identification terminal charging unit, self-adaptation terminal OTG system element respectively with Intelligent Recognition adaptor charge power supply Administrative Unit, battery core protection unit, MCU, and each unit carries out AD detection and logic control;
MCU powers for MCU control unit for electric unit and internal reference provides reference voltage;
The USBHUB ports-Extending of automatic identification terminal charging unit and automatic identification terminal equipment are terminating unit charging;
The terminating unit of the automatic identification tape OTG of self-adaptation terminal OTG system element, and complete communication, self-adaptation terminal OTG system element connects automatic identification terminal charging unit, and the USBHUB that the terminating unit recognized is connected to automatic identification terminal charging unit inside by logic switching carries out ports-Extending and conversion; Self-adaptation terminal OTG system element connecting analog IC is internal simulation IC offer power supply for electric unit, self-adaptation terminal OTG system element connects MCU control unit, all automatic identification andlogic control Communication Control are all by MCU control, self-adaptation terminal OTG system element connects DC-DC voltage increase and current constant unit, has controlled and the electrical source exchange of exterior terminal equipment by MCU;
Simulation with I C is Simulation with I C offer power supply for electric unit;
OTG data line unit provides the data line being connected with exterior terminal.
As a further improvement on the present invention, Intelligent Recognition adaptor charge power supply Administrative Unit comprises MICRO-USB female seat power input, input power detecting unit, recharge logic control unit, first Charge Management IC and the 2nd Charge Management IC; The input voltage of MICRO-USB female seat power input is+5V ± 0.25V, first Charge Management IC and the 2nd the mono-chips of Charge Management IC has maximum 1.2A charging current, over-charge protective, accurate constant current constant voltage, precharge function, Intelligent hot adjustment modes, battery core short circuit protection and battery core and is full of alert circuit, when MicroUSB data line is connected with computer or 1A adapter, first MCU control unit detects VCC voltage, when VCC voltage is lower than+4.5V, MCU control exports as lower level allows the 2nd Charge Management IC stop work; When VCC voltage is higher than+4.5V, MCU control unit control exports as high level allows the 2nd Charge Management IC start working; At this moment having first Charge Management IC to work provides the charging current of 1A to add the 1A charging current that the 2nd Charge Management IC works and provide, and at this moment always the charging current of total 2A is inner battery core charging.
As a further improvement on the present invention; battery core protection unit comprises lighium polymer battery core and battery core safety protective circuit; protection circuit comprises first class of protection and second class protection; lighium polymer battery core is 8000mAh lighium polymer battery core; battery core negative pole connects PTC; PTC second class protection, has overheat protector and overcurrent protection.
As a further improvement on the present invention, DC-DC voltage increase and current constant unit comprises the boost control circuit connected successively, boosting IC, constant current circuit and output current detection circuit, DC-DC voltage increase and current constant unit uses synchronous boost chip, it is raised to output voltage 5V outward current by cell voltage+3V-4.2V and reaches 3A, output current detection circuit, when terminating unit electric current is less than 100 μ A, system MCU thinks that exporting terminal electricity has been full of or has taken down, MCU postponed for 40 seconds and transfers lower level to, turn off and export, turn off the power supply of all chips simultaneously, MCU enters dormant state.
As a further improvement on the present invention, store management unit comprises MicroSD storage/TF storage reader.
As a further improvement on the present invention, MCU control unit comprise MCU micro-chip and be connected with MCU micro-chip power supply button, LED electrical amount display unit, OTG button, OTG pattern display unit, MCU micro-chip completes the logic control of unit that is connected with MCU control unit and AD detection.
As a further improvement on the present invention, automatic identification terminal charging unit connects self-adaptation terminal OTG system element provides usb expansion for it, automatic identification terminal charging unit connects MCU control unit by MCU logic control switching working mode, and automatic identification terminal charging unit connects DC-DC voltage increase and current constant unit for its power supply.
As a further improvement on the present invention, the 5V voltage transitions that DC-DC voltage increase and current constant unit exports is delivered to self-adaptation terminal OTG system element to 3.3V for electric unit connection DC-DC voltage increase and current constant unit by Simulation with I C.
The invention has the beneficial effects as follows:
A kind of mobile power supply automatic identification terminal charging, self-adaptation terminal OTG system are used for the present invention to the automatic identification terminal charging of exterior terminal, terminal is connected mutual communication (as: mobile phone with terminal perfection, IPAD class, panel computer, digital phase frame, camera, USB flash disk, game machine, the equipment of all usb terminal interfaces such as mobile storage), when the present invention is connected with terminal, click Power key and start the present invention, identify different terminals through inner MCU control, reach optimal charge state, stop different brands terminal ID and do not mate problem of not charging; Such as: mobile phone reads mobile phone, if it is desired to start OTG function, only need to clicking OTG key, MCU controls internal control circuit of the present invention and automatically switches primary device and additionally arrange standby, switches to terminal to terminal communication (mobile phone reads camera etc.).
This equipment also supports to fill while playing function, mode of connection is as follows, such as an adapter is that the present invention charges, the present invention's two USB output ports can connect two digital products simultaneously simultaneously, this product can be on one side that digital product charges, while being the present invention's charging, thus save user and carry more adapter, there is this function, user only needs an adapter can be able to be just again that two digital products charge simultaneously while charging for the present invention, if not having this to fill while playing function, user just needs band three adapters to be these three product chargings simultaneously, greatly improve working efficiency like this, decrease unnecessary trouble.
Accompanying drawing explanation
Fig. 1 is framework figure of the present invention;
Fig. 2 is Intelligent Recognition adaptor charge power supply Administrative Unit of the present invention;
Fig. 3 is battery core of the present invention protection unit;
Fig. 4 is DC-DC voltage increase and current constant unit of the present invention;
Fig. 5 is store management unit of the present invention;
Fig. 6 is MCU control unit of the present invention;
Fig. 7 is that MCU is for electric unit;
Fig. 8 is automatic identification terminal charging unit;
Fig. 9 is self-adaptation terminal OTG system element;
Figure 10 is that Simulation with I C is for electric unit;
Figure 11 is OTG data line unit;
Figure 12 is the present invention's function sketch when being connected with computer.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the present invention comprises: self-adaptation terminal OTG system element, automatically identification terminal charging unit, Intelligent Recognition adaptor charge power supply Administrative Unit, MCU control unit, battery core protection unit, DC-DC voltage increase and current constant unit, store management unit, MCU supply electric unit, OTG data line unit ten unit for electric unit, Simulation with I C.
Fig. 1 framework figure and schematic diagram corresponding relation:
1. self-adaptation terminal OTG system element-Fig. 9;
2. automatic identification terminal charging unit-Fig. 8;
3. Intelligent Recognition adaptor charge power supply Administrative Unit-Fig. 2;
4.MCU control unit-Fig. 6;
5. battery core protection unit-Fig. 3;
6.DC-DC voltage increase and current constant unit-Fig. 4;
7. store management unit-Fig. 5;
8.MCU is for electric unit-Fig. 7;
9. Simulation with I C is for electric unit-Figure 10;
10.OTG data line unit-Figure 11.
Described a kind of mobile power supply automatic identification terminal charging, self-adaptation terminal OTG system are used for the present invention to the automatic identification terminal charging of exterior terminal, terminal is connected mutual communication (as: mobile phone with terminal perfection, IPAD class, panel computer, digital phase frame, camera, USB flash disk, game machine, the equipment of all usb terminal interfaces such as mobile storage), when the present invention is connected with terminal, click Power key and start the present invention, identify different terminals through inner MCU control, reach optimal charge state, stop different brands terminal ID and do not mate problem of not charging; Such as: mobile phone reads mobile phone, if it is desired to start OTG function, only need to clicking OTG key, MCU controls internal control circuit of the present invention and automatically switches primary device and additionally arrange standby, switches to terminal to terminal communication (mobile phone reads camera etc.).
As shown in Fig. 2 (Intelligent Recognition adaptor charge power supply Administrative Unit-Fig. 2); the main function of this unit is the charging of inside of the present invention lithium battery core; connect battery core protection unit (Fig. 3); charge mode is by MCU control unit (Fig. 6) control; the other side connects [(self-adaptation terminal OTG system element-Fig. 9) (automatic identification terminal charging unit-Fig. 8)] and carries out data communication, and concrete principle is as follows:
CON1 is MICRO-USB female seat power input; input voltage is+5V ± 0.25V; inner utilization two RICHTEK brands, independent specialty charging chip, single chips has maximum 1.2A charging current; over-charge protective; accurate constant current constant voltage, precharge function, Intelligent hot adjustment modes; battery core short circuit protection, battery core is full of prompting function. The present invention gives tacit consent to 2A charging current, and when MicroUSB data line is connected with computer or 1A adapter, first MCU detects VCC voltage, and when VCC voltage is lower than+4.5V, it is that lower level allows U12 stop work that MCU controls IO4; When VCC voltage is higher than+4.5V, it is that high level is started working by U12 that MCU controls IO4; At this moment having U11 work to provide the charging current of 1A to add the 1A charging current that U12 work provides, at this moment always the charging current of total 2A is the inner battery core charging of the present invention, thus realizes power-supply unit and automatically select, and reaches optimal charge state.
As shown in Fig. 3 (battery core protection unit-Fig. 3); this unit is lighium polymer battery core and battery core safeguard protection mainly; inner integrated 8000mAh lighium polymer battery core; battery core negative pole connects PTC; the main function of PTC is second class protection; there is overheat protector and overcurrent protection; this unit connects (Intelligent Recognition adaptor charge power supply Administrative Unit-Fig. 2); the protection main function of unit as: U8 adopts Superchip brand protection chip, for avoiding lithium cell to cause shorter battery life or battery damaged and design because overcharge, overdischarge, electric current are excessive. It has voltage detecting and the time lag circuit of pinpoint accuracy, and working current is low; Overcharge detection 4.3V, overcharge release 4.05V; Cross and put detection 2.5V, cross and put release 3.0V; Over-current detection 0.15V, short-circuit current detection 1.0V; Charger detects.
Being mainly [(Simulation with I C for electric unit-Figure 10) (self-adaptation terminal OTG system element-Fig. 9) (automatic identification terminal charging unit-Fig. 8) (store management unit-Fig. 5)] power supply battery core boost in voltage to+5V3A such as Fig. 4 (DC-DC voltage increase and current constant unit-Fig. 4) this unit, V1+ is exported 5V3A and can be produced energy to exterior terminal by automatic identification terminal charging unit internal control.Shown in concrete principle of work, DC-DC uses synchronous boost chip U3, it is raised to output voltage V1+ output 5V outward current by cell voltage+3V-4.2V and reaches 3A, two USB delivery ports can be met power simultaneously, connect two digital products to charge (as: Samsung mobile phone simultaneously simultaneously, i Phone, IPAD etc.) IO2 U3 chip operation when being high level, electric current provides energy for outside plant terminals, simultaneously for inside chip of the present invention is powered, U4 is amplifier, what this circuit was built is constant current circuit, V1+ exports 5V makes its electric current can not more than 3A, IO3 is terminating unit current detecting, when terminating unit electric current is less than 100 μ A, system MCU thinks that exporting terminal electricity has been full of or has taken down, it is lower level that MCU postponed for 40 seconds to turn IO2, turn off Q1, Q2 conducting, thus turn off output, turn off the power supply of all chips simultaneously, MCU enters dormant state, complete machine power consumption is reduced with this, save electricity, after general the present invention is fully charged, place 6 months electricity and also can be greater than 50%.
As shown in Fig. 5 (store management unit-Fig. 5), this unit function is MicroSD storage/TF storage reader, the voltage 5V connecting (DC-DC voltage increase and current constant unit-Fig. 4) V1+ output is that inside chip is powered, it is connected with (automatic identification terminal charging unit-Fig. 8) in addition and carries out data communication, U2 is TF Card Reader chip, this chip support read-write TF card, and read or write speed reaches 480MB/S, CON2 is TF card female seat, supports the insertion of TF card.
Such as the AD detection that Fig. 6 (MCU control unit-Fig. 6) this unit function has been all; logic control. a part connects the 9 pin detection R34 of (Intelligent Recognition adaptor charge power supply Administrative Unit-Fig. 2) U9; R43 input voltage VCC dividing potential drop; select as charge mode; the 16 pin control charging current IO4 of U9, battery core full state of the present invention detection IO1; A part connects (battery core protection unit-Fig. 3), and 7 pin detection R29, the R31 dividing potential drops of U9, calculate battery core residue electricity and 3.1V over; A part connects (MCU is for electric unit-Fig. 7), and the 15 pin VDD of U9 are the power supply pin of IC; A part connects (DC-DC voltage increase and current constant unit-Fig. 4), and 17 pin of U9 are boosting rectifier control pin, and high level DC-DC boosts work, lower level stopping work; 8 pin of U9, for exporting terminal current detecting pin, when exporting terminal electric current and be less than 100 μ A, postponed for 40 seconds and turn off output, and complete machine enters dormancy pattern; A part connects the U5 of the 5 pin IS5 control identification terminal chargings of (automatic identification terminal charging unit-Fig. 8) U9, and the 5 pin high level of U9 are data communication pattern and OTG pattern, and the 5 pin lower levels of U9 are automatic identification terminal pattern; A part connects (self-adaptation terminal OTG system element-Fig. 9) and needs OTG as user, click S2, at this moment the 20 pin IOK1 of U9 have been drawn lower level by S2,21 pin of U9 export high level, enter OTG pattern, the 19 pin IS3 and 10 pin IS4 of U9 enter OTG terminal detected state, and when IS3 detects high level, 3 pin IS1 control (self-adaptation terminal OTG system element-Fig. 9) OTG terminals of MCU control U9 prepare complete. When IS4 detects high level, 4 pin IS2 control (self-adaptation terminal OTG system element-Fig. 9) OTG terminals of MCU control U9 prepare complete. IS3 and IS4 only selects the port first inserting OTG terminal to be host mode.
Being power for MCU and internal reference offer reference voltage such as Fig. 7 (MCU is for electric unit-Fig. 7) this unit function, adopt accurate step-down chip, VDD connects (MCU control unit-Fig. 6), and B+ connects (battery core protection unit-Fig. 3;), output voltage is 15 pin that 3V connects (MCU is for electric unit-Fig. 7) U9.
It is terminating unit charging with automatic identification terminal equipment if Fig. 8 (automatic identification terminal charging unit-Fig. 8) this unit function is USBHUB ports-Extending. this unit part is connected (self-adaptation terminal OTG system element-Fig. 9) for its offer usb expansion, a part connects (MCU control unit-Fig. 6) by MCU logic control switching working mode, another part connects (DC-DC voltage increase and current constant unit-Fig. 4) for its power supply, principle of work as: when system needs to work in OTG pattern, now MCU controls IS5 is high level, now U5 is in data communication pattern, now U5 is simple USBHUB ports-Extending, when system works is in automatic identification terminal equipment state, now MCU controls IS5 is lower level, now U5 is in automatic identification terminal equipment state, ID pattern is joined in working in now, IC can be different according to different brands terminal configuration ID, thus realize terminating unit and automatically identify, reach optimal charge state.
It is the terminating unit of automatic identification tape OTG and other utility appliance such as Fig. 9 (self-adaptation terminal OTG system element-Fig. 9) this unit function and completes perfect communication, this unit part connects (automatic identification terminal charging unit-Fig. 8) the present invention and the terminating unit recognized can be carried out ports-Extending by the USBHUB that logic switching connection (automatic identification terminal charging unit-Fig. 8) is inner and changed. and another part is connected (Simulation with I C is for electric unit-Figure 10) provides power supply into internal simulation IC, another part connects (MCU control unit-Fig. 6), all automatic identification andlogic control Communication Control are all by MCU control, another part connects (DC-DC voltage increase and current constant unit-Fig. 4) and control the present invention and the electrical source exchange of exterior terminal equipment by MCU. concrete principle of work explanation as:
Clicking the OTG button S2 on mobile power supply, IOK1 level can be drawn low triggering MCU to work by button S2, and the MCU of inside of the present invention can provide a high level to IK2 simultaneously, and MCU provides high level to IS5 simultaneously, drives LED5 bright, drives Q9 simultaneously, Q11 conducting, makes CON3, CON4 shell draws as lower level respectively, and now OTG starts normal, waits the connection of outside OTG equipment, peripheral equipment (as: mobile phone, IPAD class, panel computer, digital phase frame, camera, game machine etc.), when CON3 equipment connection OTG equipment, now Vout1+ can obtain the 5V voltage that outside OTG equipment returns, by R54, R56 dividing potential drop obtains 2.5V level to MCU, and at this moment MCU sends high level IS1 to chip U6 analog switch, and analog switch upset makes Pin5 and the Pin6 of U6 connect, and Pin3 and Pin2 connects, and MCU provides a lower level simultaneously can pass through Q6 to IS5,5V voltage, it is U2 that Q7 enters into V1+, U5, U13 step-down chip voltage to 3.3V to U6, U7 powers, and now CON3 is OTG device Host port, and CON4 is device port, OTG equipment at this moment can be seen by USBHUB extended chip U5 storer two equipment on CON4 equipment and TF card, realize read and write simultaneously, when CON4 equipment connection OTG equipment, now Vout2+ can obtain the 5V voltage that outside OTG equipment returns, by R57, R55 dividing potential drop obtains 2.5V level to MCU, at this moment MCU sends high level IS2 to chip U7 analog switch, analog switch upset makes Pin5 and the Pin6 of U7 connect, Pin3 and Pin2 connects, MCU provides a lower level to IS5 simultaneously, 5V voltage can pass through Q6, it is U2 that Q7 enters into V1+, (automatic identification terminal charging unit-Fig. 8) U5, (Simulation with I C for electric unit-Figure 10) U13 step-down chip voltage to 3.3V to U6, U7 powers, now CON4 is OTG device Host port, CON3 is device port, at this moment OTG equipment can see storer two equipment on CON3 equipment and TF card by (automatic identification terminal charging unit-Fig. 8) USBHUB extended chip U5, realize read and write simultaneously.
If Figure 10 (Simulation with I C is for electric unit-Figure 10) this unit is mainly for Simulation with I C provides power supply, it is that U6, U7 power that the 5V voltage transitions that V1+ exports while DC-DC is boosted by connection (DC-DC voltage increase and current constant unit-Fig. 4) delivers to (self-adaptation terminal OTG system element-Fig. 9) to 3.3V.
Such as Figure 11 (OTG data line unit-Figure 11) this unit function for the present invention provides the data line being connected with exterior terminal, it is connected with 7 kinds of mode of connection with the present invention:
1.MICROUSB male seat connects MICROUSB female seat of the present invention, the output power-supply unit of USB2.0 male seat Payload attach fitting or other USB2.0, at this moment can charge for the present invention
2.MICROUSB male seat connects MICROUSB female seat of the present invention, and USB2.0 male seat connects computer or other main frame, at this moment can charge for the present invention, while can transfer, computer or other main frame can be read inside TF card storer
3.MICROUSB male seat connects MICROUSB female seat of the present invention, USB2.0 male seat connects computer, when two USB2.0 female seat output ports of the present invention simultaneously connect a terminal or two terminals simultaneously, at this moment mutually can not disturb by transfer simultaneously, inner TF card storer and two terminals can be read on computers.
4.USB2.0 male seat connects USB.0 female seat of the present invention, and MICROUSB male seat connects terminating unit, and at this moment the present invention can charge for terminating unit.
5.USB2.0 male seat connects USB.0 female seat of the present invention, and the terminating unit of MICROUSB male seat connecting band OTG, clicks OTG button simultaneously, and at this moment the terminating unit of band OTG can read TF card storer, realizes read and write simultaneously.
The another one USB.0 female seat that 6.USB2.0 male seat connects USB.0 female seat the present invention of the present invention connects other digital terminal products, the terminating unit of MICROUSB male seat connecting band OTG, click OTG button simultaneously, at this moment the terminating unit of band OTG can read TF card storer, also can read the data content of other digital terminal product that the present invention connects simultaneously, realize read and write simultaneously.
7. two USB.0 female seats of the present invention can the arbitrarily equipment of connecting band OTG or other terminating unit, the present invention can detecting OTG equipment and other terminating unit automatically, and complete communication.
The inner connection of data line, this data line connection and normal data line are a bit different, and this data line one end is USB2.0 male seat, and one end is MICROUSB male seat, and method of attachment internal electric is explained and is:
The inner VCC of USB2.0 male seat connects the inner VCC of MICROUSB male seat;
The inner D-of USB2.0 male seat connects the inner D-of MICROUSB male seat;
The inner D+ of USB2.0 male seat connects the inner D+ of MICROUSB male seat;
The inner V-of USB2.0 male seat connects the inner V-of MICROUSB male seat;
USB2.0 male seat shell connects the inner ID of MICROUSB male seat;
As shown in figure 12, when the present invention connects computer, this invention can use as USBHUB, and usb expansion is can also to terminal charge while two USB TF card that adds stores Card Reader, independent USBHUB product common on the market only understands data communication, and display can not be charged; When Payload attach fitting of the present invention, it is possible to expand to the charging of multiple digital product as interface; When the present invention's input does not connect power supply and the present invention has an electricity, need with the present invention be other products charge time, the present invention can export 5V3A and export, and identification terminal digital product automatically, charge taking the maximum optimal charge electric current of digital product as its digital product, can be that two digital products charge (as: mobile phone, IPAD class, panel computer, digital phase frame, camera, game machine etc.) simultaneously during use simultaneously, this and automatically identification terminal digital product function can solve the problem that different brands digital product can not charge with original-pack line;If needing to use OTG function, need to click OTG button and start OTG function, this product OTG side has the LED can be bright, at this moment OTG is working properly, now any one port of CON3, CON4 connects the terminating unit of a band OTG function, another one port connects generic terminal devices, and the present invention can select the terminal connecting the present invention at first as master control, and other port is auxiliary port.
This equipment also supports to fill while playing function, mode of connection is as follows, such as an adapter is that the present invention charges, the present invention's two USB output ports can connect two digital products simultaneously simultaneously, this product can be on one side that digital product charges, while being the present invention's charging, thus save user and carry more adapter, there is this function, user only needs an adapter can be able to be just again that two digital products charge simultaneously while charging for the present invention, if not having this to fill while playing function, user just needs band three adapters to be these three product chargings simultaneously, greatly improve working efficiency like this, decrease unnecessary trouble.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations. For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (7)

1. the automatic identification terminal charging of mobile power supply, self-adaptation terminal OTG system, it is characterised in that: comprising: self-adaptation terminal OTG system element, automatic identification terminal charging unit, Intelligent Recognition adaptor charge power supply Administrative Unit, MCU control unit, battery core protection unit, DC-DC voltage increase and current constant unit, store management unit, MCU supply electric unit, OTG data line unit ten unit for electric unit, Simulation with I C;
Intelligent Recognition adaptor charge power supply Administrative Unit connects battery core protection unit, for battery core protects the inside lithium battery core charging of unit, charge mode controls by MCU control unit, and Intelligent Recognition adaptor charge power supply Administrative Unit connects self-adaptation terminal OTG system element and automatic identification terminal charging unit carries out data communication;
DC-DC voltage increase and current constant unit protects the boost in voltage of unit battery core, for Simulation with I C powers for electric unit, self-adaptation terminal OTG system element, automatically identification terminal charging unit and store management unit, DC-DC voltage increase and current constant unit protects the output of unit to produce to exterior terminal by automatic identification terminal charging unit internal control by energy battery core;
Store management unit is connected with automatic identification terminal charging unit and carries out data communication;
MCU control unit is connected for electric unit, DC-DC voltage increase and current constant unit, automatically identification terminal charging unit, self-adaptation terminal OTG system element respectively with Intelligent Recognition adaptor charge power supply Administrative Unit, battery core protection unit, MCU, and each unit carries out AD detection and logic control;
MCU powers for MCU control unit for electric unit and internal reference provides reference voltage;
The USBHUB ports-Extending of automatic identification terminal charging unit and automatic identification terminal equipment are terminating unit charging;
The terminating unit of the automatic identification tape OTG of self-adaptation terminal OTG system element, and complete communication, self-adaptation terminal OTG system element connects automatic identification terminal charging unit, and the USBHUB that the terminating unit recognized is connected to automatic identification terminal charging unit inside by logic switching carries out ports-Extending and conversion;Self-adaptation terminal OTG system element connecting analog IC is internal simulation IC offer power supply for electric unit, self-adaptation terminal OTG system element connects MCU control unit, all automatic identification andlogic control Communication Control are all by MCU control, self-adaptation terminal OTG system element connects DC-DC voltage increase and current constant unit, has controlled and the electrical source exchange of exterior terminal equipment by MCU;
Simulation with I C is Simulation with I C offer power supply for electric unit;
OTG data line unit provides the data line being connected with exterior terminal;
Intelligent Recognition adaptor charge power supply Administrative Unit comprises MICRO-USB female seat power input, input power detecting unit, recharge logic control unit, first Charge Management IC and the 2nd Charge Management IC; The input voltage of MICRO-USB female seat power input is+5V ± 0.25V, first Charge Management IC and the 2nd the mono-chips of Charge Management IC has maximum 1.2A charging current, over-charge protective, accurate constant current constant voltage, precharge function, Intelligent hot adjustment modes, battery core short circuit protection and battery core and is full of alert circuit, when MicroUSB data line is connected with computer or 1A adapter, first MCU control unit detects VCC voltage, when VCC voltage is lower than+4.5V, MCU control exports as lower level allows the 2nd Charge Management IC stop work; When VCC voltage is higher than+4.5V, MCU control unit control exports as high level allows the 2nd Charge Management IC start working; At this moment having first Charge Management IC to work provides the charging current of 1A to add the 1A charging current that the 2nd Charge Management IC works and provide, and at this moment always the charging current of total 2A is inner battery core charging.
2. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system; it is characterized in that: battery core protection unit comprises lighium polymer battery core and battery core safety protective circuit; protection circuit comprises first class of protection and second class protection; lighium polymer battery core is 8000mAh lighium polymer battery core; battery core negative pole connects PTC; PTC second class protection, has overheat protector and overcurrent protection.
3. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system, it is characterized in that: DC-DC voltage increase and current constant unit comprises the boost control circuit connected successively, boosting IC, constant current circuit and output current detection circuit, DC-DC voltage increase and current constant unit uses synchronous boost chip, it is raised to output voltage 5V outward current by cell voltage+3V-4.2V and reaches 3A, output current detection circuit, when terminating unit electric current is less than 100 μ A, system MCU thinks that exporting terminal electricity has been full of or has taken down, MCU postponed for 40 seconds and transfers lower level to, turn off and export, turn off the power supply of all chips simultaneously, MCU enters dormant state.
4. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system, it is characterised in that: store management unit comprises MicroSD storage/TF storage reader.
5. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system, it is characterized in that: MCU control unit comprise MCU micro-chip and be connected with MCU micro-chip power supply button, LED electrical amount display unit, OTG button, OTG pattern display unit, MCU micro-chip completes the logic control of unit that is connected with MCU control unit and AD detection.
6. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system, it is characterized in that: identification terminal charging unit connects self-adaptation terminal OTG system element automatically provides usb expansion for it, automatic identification terminal charging unit connects MCU control unit by MCU logic control switching working mode, and automatic identification terminal charging unit connects DC-DC voltage increase and current constant unit for its power supply.
7. the automatic identification terminal charging of the mobile power supply of one according to claim 1, self-adaptation terminal OTG system, it is characterised in that: Simulation with I C connects DC-DC voltage increase and current constant unit for electric unit and to 3.3V, the 5V voltage transitions that DC-DC voltage increase and current constant unit exports is delivered to self-adaptation terminal OTG system element.
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