CN105119118B - A kind of USB charging wires - Google Patents
A kind of USB charging wires Download PDFInfo
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- CN105119118B CN105119118B CN201510428618.2A CN201510428618A CN105119118B CN 105119118 B CN105119118 B CN 105119118B CN 201510428618 A CN201510428618 A CN 201510428618A CN 105119118 B CN105119118 B CN 105119118B
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Abstract
The embodiments of the invention provide a kind of USB charging wires, it is related to the charging technique field of mobile device, in the case of being charged normal in realization, the problem of solving damage charging equipment when sweat stain or water in the prior art enter the second powered USB male joint.The USB charging wires include the first partial pressure unit, the second partial pressure unit and the first triode unit, first triode unit is used to end when the first USB male joint is connected with charging equipment and the second USB male joint is not connected with mobile device, is turned on when the first USB male joint is connected with charging equipment and the second USB male joint is connected with mobile device.The present invention is applied to charging equipment to charging of mobile devices.
Description
Technical field
The present invention relates to the charging technique field to mobile device, more particularly to a kind of USB charging wires.
Background technology
With continuing to develop for electronic technology, the mobile device such as smart mobile phone, tablet personal computer is widely used to people's
In life, people can install corresponding application program according to respective demand, provide and more easily service for people, but
It is that while convenient service is provided, the battery power of the mobile device such as smart mobile phone, tablet personal computer is quickly consumed, therefore, people
Need frequently to charge to battery using charging wire.
Existing charging wire uses USB (English full name：Universal Serial Bus, referred to as：USB), with
Meet the charging to different mobile devices.Wherein, USB line include connecting line, be arranged on connecting line one end the first USB male joint and
Be arranged on the second USB male joint of the connecting line other end, the first USB male joint is connected with charger or computer, the second USB male joint with
Mobile device is connected.
But, when the first USB male joint is inserted on charger or computer, the second USB male joint can be with 4.5V~5.5V's
Voltage, therefore, when entering the second powered USB male joint if sweat stain or water, it is possible to damage mobile device.
The content of the invention
Embodiments of the invention provide a kind of USB charging wires, in the case of being charged normal in realization, solve existing skill
When sweat stain or water enter the second powered USB male joint in art, the problem of damaging mobile device.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
The embodiments of the invention provide with a kind of USB charging wires, the USB charging wires include the first USB male joint, second
USB male joint and shielding line, the USB charging wires also include：
First partial pressure unit, the first end of first partial pressure unit is connected with the power pins of first USB male joint；
Second partial pressure unit, the first end of second partial pressure unit is connected with the second end of first partial pressure unit,
Second end of second partial pressure unit is connected with the shielding line；
First triode unit, the grid of the first triode unit and the first end of second partial pressure unit connect
Connect, the first pole of the first triode unit is connected with the power pins of first USB male joint, the first triode list
Second pole of member is connected with the power pins of second USB male joint；
The first triode unit is used to be connected with charging equipment in first USB male joint and the 2nd USB is public
Head ends when not being connected with mobile device, is connected in first USB male joint with the charging equipment and second USB male joint
Turned on when being connected with the mobile device.
The USB charging wires provided based on embodiments of the invention, when the first USB male joint connects charging equipment and the 2nd USB
When male is not connected with mobile device, the grounding pin of shielding line and the second USB male joint disconnects, now, the first triode unit
Grid is connected by the first partial pressure unit with the power pins of the first USB male joint, and then triggers the first of the first triode unit
Pole and the second pole disconnect, i.e. the first triode unit cut-off, then do not have electric current stream between the first USB male joint and the second USB male joint
Cross, therefore, when the first USB male joint is connected with charging equipment and the second USB male joint is not connected with mobile device, the second USB male joint
It is not charged.When the first USB male joint connects charging equipment and the second USB male joint connection mobile device, shielding line and the 2nd USB are public
The grounding pin connection of head, now, the grid of the first triode unit is connected by the second partial pressure unit with shielding line, and then is touched
The first pole and the conducting of the second pole of the first triode unit are sent out, i.e. the first triode unit is turned on, then the first USB male joint and second
There is electric current to flow through between USB male joint, therefore, when the first USB male joint be connected with charging equipment and the second USB male joint connection movement set
When standby, mobile device is charged.
According to foregoing description, when the first USB male joint is connected and the not connected mobile device of the second USB male joint with charging equipment
When, the second USB male joint is not charged, in addition, working as, the first USB male joint is connected with charging equipment and the connection movement of the second USB male joint is set
When standby, mobile device is charged, not only realizes and mobile device is charged normal, and in the first USB male joint and charging
Equipment connect and the second USB male joint be not connected with mobile device when, the second USB male joint is not charged, solve in the prior art sweat stain or
When water enters the second powered USB male joint the problem of damage mobile device, practicality is improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 defines schematic diagram for the interface of the first USB male joint and the second USB male joint in USB charging wires in the prior art；
Fig. 2 is a kind of structural representation one of USB charging wires provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation two of USB charging wires provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation three of USB charging wires provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation four of USB charging wires provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation five of USB charging wires provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation six of USB charging wires provided in an embodiment of the present invention；
Fig. 8 is a kind of structural representation seven of USB charging wires provided in an embodiment of the present invention；
Fig. 9 is a kind of structural representation eight of USB charging wires provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " make a distinction to function and the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand the printed words such as " first ", " second " and to not being defined quantity and execution order or not.
Before technical scheme is introduced, some contents related to the embodiment of the present invention are introduced first.USB is
A kind of serial bus standard of computer system and external equipment is connected, is also a kind of technical specification of input/output interface, quilt
It is widely used in the information communication product such as PC and mobile device.USB line includes connecting line, is arranged on connecting line one end
First USB male joint, the second USB male joint and shielding line for being arranged on the connecting line other end, the first USB male joint and computer or charging
Device is connected, and the second USB male joint is connected with mobile device.Determine as shown in Figure 1 for the interface of the first USB male joint and the second USB male joint
Adopted schematic diagram, wherein, be followed successively by from right to left it is red white green black, it is red it is white it is green it is black be that standard matches somebody with somebody line color, 1,2,3,4 are corresponded to respectively
Pin, red represents USB power source (VCC or VBUS), and white represents data wire (Data-, abbreviation：D-), green represents data wire
(Data+, referred to as：D+), black represents ground wire (GND), in addition, the second USB male joint also includes dead end (ID), if the 2nd USB
When male is A types, it is connected to the ground；It is earth-free if the second USB male joint is Type B.Meanwhile, the first USB male joint and the 2nd USB are public
The outermost layer of head is provided with metal outer frame, and the metal outer frame of the metal outer frame of the first USB male joint and the second USB male joint passes through shielding
Line is connected, and therefore, the metal outer frame of the metal outer frame of the first USB male joint and the second USB male joint plays a part of screen layer.
It should be noted that because the second USB male joint needs charging jacks connection corresponding with mobile device, and move
The charging jacks of equipment and the interface of the second USB male joint define it is identical, meanwhile, the grounding pin of the charging jacks of mobile device with
Shielding line has been connected, so, when the second USB male joint be not connected with charging equipment (such as charger or computer), the 2nd USB
The grounding pin of male is to disconnect with shielding line, when the second USB male joint is connected with charging equipment, and the second USB male joint connects
The shielding line connection in shielding line and charging jacks in the grounding pin connection of ground pin and charging jacks, USB line, and charge
The grounding pin of jack is connected with its shielding line, therefore, when the second USB male joint is connected with charging equipment, the second USB male joint
Grounding pin is connected with shielding line.
In addition, the triode used in all embodiments of the invention in triode unit can be thin film transistor (TFT) or field
Effect pipe or other characteristic identical devices.In embodiments of the present invention, to distinguish the two poles of the earth of transistor in addition to grid, by it
In a pole be referred to as source electrode, another pole is referred to as drain electrode.Provide that the intermediate ends of transistor input for grid, signal by the form in accompanying drawing
End is that source electrode, signal output part are drain electrode.In addition the switching transistor that the embodiment of the present invention is used includes p-type switching transistor
With two kinds of N-type switching transistor, wherein, p-type switching transistor is turned on when grid is low level, is cut when grid is high level
Only, N-type switching transistor is ended to be turned on when grid is high level when grid is low level.
The embodiments of the invention provide a kind of USB charging wires, the USB line includes the first USB male joint 10, the second USB male joint
11 (being defined for the interface of the first USB male joint 10 and the second USB male joint 11, may be referred to described in Fig. 1) and shielding line
12, as shown in Fig. 2 the USB charging wires also include：
First partial pressure unit 13, the first end of the first partial pressure unit 13 is connected with the power pins of the first USB male joint 10；
Second partial pressure unit 14, the first end of the second partial pressure unit 14 is connected with the second end of the first partial pressure unit 13, the
Second end of two partial pressure units 14 is connected with shielding line 12；
First triode unit 15, the grid of the first triode unit 15 is connected with the first end of the second partial pressure unit 14,
First pole of the first triode unit 15 is connected with the power pins of the first USB male joint 10, and the second of the first triode unit 15
Pole is connected with the power pins of the second USB male joint 11；
First triode unit 15 be used for the first USB male joint 10 be connected with charging equipment and the second USB male joint 11 not with
Mobile device ends when connecting, and is connected in the first USB male joint 10 with charging equipment and the second USB male joint 11 is connected with mobile device
When turn on.
For the USB charging wires shown in Fig. 2, illustrated so that the first triode unit is p-type switching transistor as an example.Tool
Body, when the first USB male joint 10 connection charging equipment (such as charger or computer) and the not connected movement of the second USB male joint 11 is set
When standby, according to above-mentioned described, the grounding pin disconnection of the USB male joint 11 of shielding line 12 and second, now, the first triode list
The grid of member 15 is connected by the first partial pressure unit 13 with the power pins of the first USB male joint 10, i.e. the first triode unit 15
First end connection high level, and then trigger the first pole and the second pole of the first triode unit 15 and disconnect, then the first USB male joint
10 and second do not have electric current to flow through between USB male joint 11, therefore, when the first USB male joint 10 is connected and the 2nd USB with charging equipment
When male 11 is not connected with mobile device, the second USB male joint 11 is not charged.
When the first USB male joint 10 connects charging equipment and the second USB male joint 11 connection mobile device, retouched according to above-mentioned
State, shielding line 12 is connected with the grounding pin of the second USB male joint 11, now, the first end of the first triode unit 15 passes through
Second partial pressure unit 14 is connected with shielding line 12, i.e. the first end of the first triode unit 15 connection low level, and then triggers the
First pole of one triode unit 15 and the conducting of the second pole, then have electric current stream between the first USB male joint 10 and the second USB male joint 11
Cross, therefore, when the first USB male joint 10 is connected with charging equipment and the second USB male joint 11 connects mobile device, to mobile device
Charged.
According to foregoing description, when the first USB male joint 10 is connected and the not connected movement of the second USB male joint 11 is set with charging equipment
When standby, the second USB male joint 11 is not charged, in addition, working as, the first USB male joint 10 is connected with charging equipment and the second USB male joint 11 connects
When connecing mobile device, mobile device is charged, not only realizes and mobile device is charged normal, and it is public in the first USB
First 10 are connected with charging equipment and when the second USB male joint 11 is not connected with mobile device, and the second USB male joint 11 is not charged, solves
When sweat stain or water enter the second powered USB male joint in the prior art the problem of damage mobile device, practicality is improved.
Further, as shown in figure 3, the USB line also includes：Discharge cell 16, the first end of discharge cell 16 respectively with
The second pole connection of first triode unit 15, the second end of discharge cell 16 is connected with the grounding pin of the second USB male joint 11.
So, when user pulls out mobile device from the second USB male joint 11, remnants electric charge is might have on circuit, be therefore, it can
These remaining electric charges are discharged by discharge cell 16, the rapid power-off of the USB line after mobile device is pulled out is realized.
Further, as shown in figure 4, the USB charging wires also include：
Charging control unit 17, the first end of charging control unit 17 is connected with the second pole of the first triode unit 15；
3rd partial pressure unit 18, the first end of the 3rd partial pressure unit 18 is connected with the second end of charging control unit 17, the
Second end of three partial pressure units 18 is connected with the grounding pin of the second USB male joint 11；
Second triode unit 19, the grid of the second triode unit 19 is connected with the first end of the 3rd partial pressure unit 18,
First pole of the second triode unit 19 is connected with the first end of charging control unit 17, the second pole of the second triode unit 19
It is connected with the power pins of the second USB male joint 11.
So, when the first USB male joint 10 is connected with charging equipment and the second USB male joint 11 is not connected with mobile device, lead to
The control of the opening degree of 17 pair of second triode unit 19 of electric control unit is overcharged, so as in the second USB male joint 11 and movement
Slow upper electricity is realized when equipment is connected, prevent the problem of instant plug-in brings surge or overshoot to mobile device, it is to avoid existing skill
The first USB male joint 10 is connected with charging equipment and when the second USB male joint 11 is not connected with mobile device in art, the second USB male joint 11
It is powered to cause the problem of instant plug-in occurs surge or overshoot to mobile devices such as smart mobile phone, tablet personal computers.
Further, as shown in figure 5, the USB charging wires also include：
First protection location 20, the first end of the first protection location 20 is connected with the power pins of the first USB male joint 10, the
Second end of one protection location 20 is connected with the grounding pin of the first USB male joint 10；And/or,
Second protection location 21, the first end of the second protection location 21 is connected with the second pole of the first triode unit 15,
Second end of the second protection location 21 is connected with the grounding pin of the first USB male joint 10；And/or,
3rd protection location 22, the first end of the 3rd protection location 22 is connected with the power pins of the second USB male joint 11, the
Second end of three protection locations 22 is connected with the grounding pin of the second USB male joint 11.
Wherein, the first protection location 20 is used to prevent user that the first USB male joint is reversely inserted into charging equipment to USB
The damage of line.Second protection location 21 is used to prevent the overvoltage that the second pole of the first triode unit 15 is exported to subsequent device
Produce damage.3rd protection location 22 is used to prevent damage of the overvoltage by the second USB male joint 11 to mobile device.
In order to be more clearly understood from technical scheme, below, had for unit described above
Body is described.
As shown in fig. 6, including second point comprising the first divider resistance R1, the second partial pressure unit 14 with the first partial pressure unit 13
Piezoresistance R2, the first triode unit 15 is the first triode V1 and the first triode V1 is PMOS (English full name：positive
Metal-oxid-semiconductor, Chinese：P-type mos) exemplified by pipe.In order to subsequently distinguish, by first
The PMOS that triode V1 is used is referred to as PMOS1 pipes, then the first triode V1 grid for PMOS1 pipes grid g, the one or three
The drain electrode d of the extremely PMOS1 pipes of the second of the source electrode s, the first triode V1 of the extremely PMOS1 pipes of the first of pole pipe V1.
USB charging wires according to Fig. 6, do not connect when the first USB male joint 10 connects charging equipment and the second USB male joint 11
When connecing mobile device, the grounding pin of the USB male joint 11 of shielding line 12 and second disconnects, now, and the grid g of PMOS1 pipes passes through the
One divider resistance R1 is connected with the power pins of the first USB male joint 10, i.e. the grid g connection high level of PMOS1 pipes, meanwhile, root
End according to the p-type switching transistor of description described above when grid is high level, now, the source electrode s and drain electrode d of PMOS1 pipes
Cut-off, then do not have electric current to flow through, therefore, when the first USB male joint 10 is with filling between the first USB male joint 10 and the second USB male joint 11
When electric equipment is connected and the second USB male joint 11 is not connected with mobile device, the second USB male joint 11 is not charged.
When the first USB male joint 10 connects charging equipment and the second USB male joint 11 connection mobile device, shielding line 12 and the
The grounding pin connection of two USB male joints 11, now, the grid g of PMOS1 pipes is connected by the second divider resistance R2 with shielding line 12
Connect, then, the grid g connection low levels of PMOS1 pipes, meanwhile, it is in grid according to the p-type switching transistor of description described above
Turn on, now, the source electrode s of PMOS1 pipes and drain electrode d conductings during low level, then the first USB male joint 10 and the second USB male joint 11 it
Between there is electric current to flow through, therefore, when the first USB male joint 10 be connected with charging equipment and the second USB male joint 11 connection mobile device when,
Mobile device is charged.
Further, as shown in fig. 7, the discharge cell 16 includes：First resistor R3, first resistor R3 first end and the
The second pole connection of one triode unit 15, first resistor R3 the second end is connected with the grounding pin of the second USB male joint 11.This
Sample, when user pulls out mobile device from the second USB male joint 11, might have remnants electric charge, therefore, it can on USB line
These remaining electric charges are discharged by first resistor R3, the rapid power-off of the USB line after mobile device is pulled out is realized.
It should be noted that for the device in Fig. 7 with Fig. 6 same tags, may be referred to the embodiment shown in Fig. 6,
It will not be repeated here.
Further, in order to realize the slow upper Electricity Functional to mobile device, on the basis of Fig. 7, as shown in figure 8, charging
Control unit 17 includes：Second resistance R4 and the first electric capacity C1.Wherein, second resistance R4 first end and the first triode unit
15 the second pole connection, second resistance R4 the second end is connected with the first end of the 3rd partial pressure unit 18；The of first electric capacity C1
One end is connected with second resistance R4 first end, and the first electric capacity C1 the second end is connected with second resistance R4 the second end；
3rd partial pressure unit 18 includes the 3rd divider resistance R5；
Second triode unit 19 includes the second triode V2, wherein, so that the second triode V2 is PMOS as an example, by the
The PMOS that two triode V2 are used is referred to as PMOS2, then the second triode V2 grid for PMOS2 pipes grid g, the two or three
The drain electrode d of the extremely PMOS2 pipes of the second of the source electrode s, the second triode V2 of the extremely PMOS2 pipes of the first of pole pipe V2.
Specifically, when the first USB male joint 10 is connected with charging equipment and the second USB male joint 11 is connected with mobile device,
The source electrode s of PMOS1 pipes and drain electrode d conductings, and the drain electrode d of PMOS1 pipes is connected with the source electrode s of PMOS2 pipes, therefore, PMOS2 pipes
Source electrode s connection high level, meanwhile, the grid g of PMOS2 pipes passes through the 3rd divider resistance R4 and the grounding lead of the second USB male joint 11
Pin is connected, then, the grid g of PMOS2 pipes connects low level, is turned on according to p-type switching transistor when grid is low level, this
When, the source electrode s and drain electrode d of PMOS2 pipes are turned on, i.e. have electric current to flow through between the first USB male joint 10 and the second USB male joint 11, enter
And the charging to mobile device can be realized；In addition, the slow rising of the charging voltage by the second electric capacity C2, PMOS2 pipes are slow
It is slow to open, and then slow upper Electricity Functional is realized, slow upper Electricity Functional can avoid impact of the power supply overshoot to mobile device.
As shown in figure 9, the first protection location 20 in the USB line includes：First diode D1 and the first voltage-regulator diode
D2.Wherein, the first diode D1 negative pole is connected with the power pins of the first USB male joint 10, the first diode D1 positive pole with
The grounding pin connection of first USB male joint 10；The power pins of first voltage-regulator diode D2 negative pole and the first USB male joint 10 connect
Connect, the first voltage-regulator diode D2 positive pole is connected with the grounding pin of the first USB male joint 10.Wherein, the first protection location 20 is used
In preventing damage of the overvoltage to USB line.Example, in general, the first USB male 10 is inserted into charging by user
In the corresponding jack of equipment, still, if during the overtension of charging equipment output, and the voltage stabilizing more than the first voltage-regulator diode D2
During value, the first voltage-regulator diode D2 by the voltage clamping of the first USB male joint 10 the first voltage-regulator diode D2 voltage stabilizing value, it is to avoid
Damage of the overvoltage to USB line；If being inserted accordingly in addition, the first USB male 10 is reversely inserted into charging equipment by user by mistake
Kong Shi, because the interface of charging equipment jack is corresponding with the interface of the first USB male joint 10, now, the electricity of the first USB male joint 10
Grounding pin with charging equipment jack is connected by source pin, and the grounding pin of the first USB male joint 10 will be with charging equipment jack
Power pins connection, now, the first diode D1 conductings, i.e. the positive pole of electric current from the first diode D1 flows to the first diode
D1 negative pole, it is to avoid damage of the overvoltage to USB line.
As shown in figure 9, the second protection location 21 in the USB line includes：Second voltage-regulator diode D3.Wherein, second is steady
Pressure diode D3 negative pole is connected with the second pole of the first triode unit 15, the second voltage-regulator diode D3 positive pole and first
The grounding pin connection of USB male joint 10.Wherein, the second protection location 21 is used to prevent that the 3rd end of the first triode unit 15 is defeated
The overvoltage gone out produces damage to subsequent device.Specifically, when the output voltage of the second pole of the first triode unit 15 is more than
During the second voltage-regulator diode D3 voltage stabilizing value, the second voltage-regulator diode D3 exists the output voltage clamper of the first triode unit 15
Second voltage-regulator diode D3 voltage stabilizing value, it is to avoid the overvoltage of the first triode unit 15 output is to subsequent device in USB line
Damage；
As shown in figure 9, the 3rd protection location 22 includes：Second electric capacity C2 and Transient Suppression Diode D4.Wherein, the second electricity
The first end for holding C2 is connected with the power pins of the second USB male joint 11, the second electric capacity C2 the second end and the second USB male joint 11
Grounding pin is connected；Transient Suppression Diode D4 first end is connected with the power pins of the second USB male joint 11, and transient state suppresses two
Pole pipe D4 the second end is connected with the grounding pin of the second USB male joint 11.Wherein, second electric capacity C2 rises in the 3rd protection location 22
To the effect of voltage stabilizing, meanwhile, when the output voltage of the pole of the second triode unit 19 second is too high, Transient Suppression Diode D4 energy
It is enough that the high impedance of its two interpolar is changed into Low ESR, make the voltage clamping of two interpolars in a predetermined value, can effectively prevent
Damage of the overvoltage by the second USB male joint 11 to mobile device.
The technical scheme provided for the embodiment of the present invention, has also carried out experimental verification, has described for convenience, herein will
USB charging wires of the prior art are referred to as generic USB charging wire, and the USB line that the embodiment of the present invention is provided is referred to as to improve USB
Charging wire.
Wherein, test and comparison is carried out to the eye pattern for improving USB charging wires and generic USB charging wire, must be changed by experimental side
The eye pattern difference for entering USB charging wires and generic USB charging wire is smaller.In addition, also to generic USB charging wire and improving USB chargings
The transmitted data rates of line are contrasted.Example, it is assumed that the same 964M files of transmission, generic USB charging wire is by the 964M
It is 240 seconds that file copies time in mobile phone to from computer, from mobile phone copy computer in time be 55 seconds；USB charges
It is 241 seconds that line copies the 964M files to time in mobile phone from computer, from mobile phone copy computer in time be 55
Second.Therefore deduce that, normal charging and data-transformation facility can be realized by improving USB charging wires.
Further, test and comparison is carried out to the upper electrical waveform for improving USB charging wires and generic USB charging wire, wherein, it is right
In generic USB charging wire, the upper electrical waveform for being all before and after the second USB male joint and mobile device connection is identical, still, is improved
USB charging wires the first USB male joint with charging equipment is connected and the second USB male joint is not connected with mobile device when, measure VBUS
Voltage is 0V, when the first USB male joint is connected with charging equipment and the second USB male joint is connected with mobile device, measures comparison and delays
Slow electrifying timing sequence, is overshooted smaller.
Ripple when further, also to the charging of generic USB charging wire and improvement USB charging wires carries out test comparison,
Ripple of the generic USB charging wire in charging is 380mV, and it is 270mV to improve ripple of the USB charging wires in charging.In addition,
When mobile phone is pulled out from the second USB male joint, the power down for improving USB charging wires is also normal.
The USB charging wires provided according to embodiments of the present invention, when the first USB male joint is connected and second with charging equipment
When USB male joint is not connected with mobile device, the second USB male joint is not charged, in addition, be connected with charging equipment when the first USB male joint and
When second USB male joint connects mobile device, mobile device is charged, not only realizes and mobile device is charged normal, and
And when the first USB male joint is connected with charging equipment and the second USB male joint is not connected with mobile device, the second USB male joint is not charged,
Solve the first USB male joint in the prior art be connected with charging equipment and the second USB male joint be not connected with mobile device when, second
USB male joint is powered to cause the problem of instant plug-in occurs surge or overshoot to mobile devices such as smart mobile phone, tablet personal computers, uses
The technical scheme that the embodiment of the present invention is provided avoids the instant plug-in of USB line to mobile devices such as smart mobile phone, tablet personal computers
The problem of surge or overshoot occur, improves practicality.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of including above method embodiment is performed；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of USB charging wires, the USB charging wires include the first USB male joint, the second USB male joint and shielding line, described second
The grounding pin connection of the grounding pin of USB male joint and the charging jacks of mobile device, the shielding line and the charging jacks
Shielding line connection, the grounding pin of the charging jacks is connected with the shielding line of the grounding pin of the charging jacks；It is special
Levy and be, the USB charging wires also include：
First partial pressure unit, the first end of first partial pressure unit is connected with the power pins of first USB male joint；
Second partial pressure unit, the first end of second partial pressure unit is connected with the second end of first partial pressure unit, described
Second end of the second partial pressure unit is connected with the shielding line；
First triode unit, the grid of the first triode unit is connected with the first end of second partial pressure unit, institute
The first pole for stating the first triode unit is connected with the power pins of first USB male joint, the first triode unit
Second pole is connected with the power pins of second USB male joint；
The first triode unit be used for first USB male joint be connected with charging equipment and second USB male joint not
End when being connected with mobile device, be connected in first USB male joint with charging equipment and second USB male joint is moved with described
Turned on during dynamic equipment connection.
2. USB charging wires according to claim 1, it is characterised in that the USB charging wires also include：
Discharge cell, the second pole of the first end of the discharge cell respectively with the first triode unit is connected, described to put
Second end of electric unit is connected with the grounding pin of second USB male joint.
3. USB charging wires according to claim 1 or 2, it is characterised in that the USB charging wires also include：
Charging control unit, the first end of the charging control unit is connected with the second pole of the first triode unit；
3rd partial pressure unit, the first end of the 3rd partial pressure unit is connected with the second end of the charging control unit, described
Second end of the 3rd partial pressure unit is connected with the grounding pin of second USB male joint；
Second triode unit, the grid of the second triode unit is connected with the first end of the 3rd partial pressure unit, institute
The first pole for stating the second triode unit is connected with the first end of the charging control unit, and the of the second triode unit
Two poles are connected with the power pins of second USB male joint.
4. USB charging wires according to claim 1, it is characterised in that the USB charging wires also include：
First protection location, the first end of first protection location is connected with the power pins of first USB male joint, described
Second end of the first protection location is connected with the grounding pin of first USB male joint；And/or,
Second protection location, the first end of second protection location is connected with the second pole of the first triode unit, institute
The second end for stating the second protection location is connected with the grounding pin of first USB male joint；And/or,
3rd protection location, the first end of the 3rd protection location is connected with the power pins of second USB male joint, described
Second end of the 3rd protection location is connected with the grounding pin of second USB male joint.
5. USB charging wires according to claim 2, it is characterised in that the discharge cell includes：
First resistor, the first end of the first resistor and the three-terminal link of the first triode unit, first electricity
Second end of resistance is connected with the grounding pin of second USB male joint.
6. USB charging wires according to claim 3, it is characterised in that the charging control unit includes：
Second resistance, the first end of the second resistance is connected with the second pole of the first triode unit, second electricity
Second end of resistance is connected with the second end of the 3rd partial pressure unit；
First electric capacity, the first end of first electric capacity is connected with the first end of the second resistance, and the of first electric capacity
Two ends are connected with the second end of the second resistance.
7. USB charging wires according to claim 4, it is characterised in that first protection location includes：
First diode, the negative pole of first diode is connected with the power pins of first USB male joint, and the described 1st
The positive pole of pole pipe is connected with the grounding pin of first USB male joint；
First voltage-regulator diode, the negative pole of first voltage-regulator diode is connected with the power pins of first USB male joint, institute
The positive pole for stating the first voltage-regulator diode is connected with the grounding pin of first USB male joint.
8. USB charging wires according to claim 4, it is characterised in that second protection location includes：
Second voltage-regulator diode, the negative pole of second voltage-regulator diode is connected with the second pole of the first triode unit,
The positive pole of second voltage-regulator diode is connected with the grounding pin of first USB male joint.
9. USB charging wires according to claim 4, it is characterised in that the 3rd protection location includes：
Second electric capacity, the power pins connection of the second USB male joint described in the first end of second electric capacity, second electric capacity
Second end is connected with the grounding pin of second USB male joint；
Transient Suppression Diode, the first end of the Transient Suppression Diode is connected with the power pins of second USB male joint,
Second end of the Transient Suppression Diode is connected with the grounding pin of second USB male joint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510428618.2A CN105119118B (en) | 2015-07-20 | 2015-07-20 | A kind of USB charging wires |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510428618.2A CN105119118B (en) | 2015-07-20 | 2015-07-20 | A kind of USB charging wires |
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| CN105119118A CN105119118A (en) | 2015-12-02 |
| CN105119118B true CN105119118B (en) | 2017-10-24 |
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| CN106374581B (en) * | 2016-10-31 | 2019-05-17 | 维沃移动通信有限公司 | A kind of the voltage output method and charger of charger |
| CN109425758A (en) * | 2017-08-23 | 2019-03-05 | 广州灿能电子科技有限公司 | A kind of USB power source plate detection fixture |
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| CN203406634U (en) * | 2013-06-24 | 2014-01-22 | 东莞宇龙通信科技有限公司 | Charger |
| CN103972756A (en) * | 2014-05-27 | 2014-08-06 | 上海电力学院 | USB (Universal Serial Bus) charging connecting wire capable of performing countdown power failure |
| CN103972958A (en) * | 2014-04-23 | 2014-08-06 | 陈利军 | Intelligent charging distribution method and device |
| CN103986040A (en) * | 2014-05-27 | 2014-08-13 | 上海电力学院 | Automatic power-off type USB charging connecting wire and application thereof |
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| CN102610972A (en) * | 2011-12-31 | 2012-07-25 | 惠州Tcl移动通信有限公司 | Data line structure |
| CN203406634U (en) * | 2013-06-24 | 2014-01-22 | 东莞宇龙通信科技有限公司 | Charger |
| CN103972958A (en) * | 2014-04-23 | 2014-08-06 | 陈利军 | Intelligent charging distribution method and device |
| CN103972756A (en) * | 2014-05-27 | 2014-08-06 | 上海电力学院 | USB (Universal Serial Bus) charging connecting wire capable of performing countdown power failure |
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