CN108233130A - USB cable, USB interface and adapter - Google Patents

USB cable, USB interface and adapter Download PDF

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Publication number
CN108233130A
CN108233130A CN201710647840.0A CN201710647840A CN108233130A CN 108233130 A CN108233130 A CN 108233130A CN 201710647840 A CN201710647840 A CN 201710647840A CN 108233130 A CN108233130 A CN 108233130A
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CN
China
Prior art keywords
pin
connect
pins
switch module
communications pins
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Granted
Application number
CN201710647840.0A
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Chinese (zh)
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CN108233130B (en
Inventor
谭琴
刘小勇
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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Priority to CN201710647840.0A priority Critical patent/CN108233130B/en
Publication of CN108233130A publication Critical patent/CN108233130A/en
Application granted granted Critical
Publication of CN108233130B publication Critical patent/CN108233130B/en
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    • 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
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part

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Abstract

This application discloses USB cable, USB interface and adapters.The USB interface of the identification first kind is supported to turn the demand of the USB interface of Second Type for identifying that USB interface that the cable is traditional first kind turns the first identification pin of the cable of the USB interface of Second Type by being added in the USB interface of the first kind.By the break-make for adding switch module and the first communications pins to control between break-make and the first communications pins and the second communications pins between the first pull-up resistor and signal of communication line, the USB interface to realize compatible PD communication protocols and traditional first kind turns the USB interface of Second Type.

Description

USB cable, USB interface and adapter
Technical field
This application involves Communication Control Technology field more particularly to USB cable, USB interface and adapters.
Background technology
Common adapter, desktop computer and laptop is still USB Type-A interfaces, i.e., does not support positive and negative two The interface of face blindmate.But with the development of technology, existing USB Type-C interfaces are supported tow sides blindmate, are pushed away Extensively it is applied to portable equipment.
Meanwhile with the development of portable equipment charging technique, the requirement to charge cable also improves.It particularly directly fills, removes The voltage and current of cable is required outer, portable equipment and adapter real-time exchange information are also required, to ensure charging safety It is efficient to carry out.The information exchange of portable equipment and adapter is there are two types of mode, first, by the DP/DM accesses of USB2.0 come real Existing, this scheme is less using producer, poor compatibility.Second is that being realized by the communication of Type-C, this scheme has the mark of USB associations Quasi- PD (Power Delivery-Specification) agreement supports that good compatibility is widely adopted.
By taking current existing USB Type-A interfaces turn the charge cable of USB Type-C interfaces as an example, it is as shown in Figure 1 103 connection diagram of the cable 101, adapter 102 and portable equipment.USB Type-A interfaces 1011 and adapter 102 connect, USB Type-C interfaces 1012 and portable equipment 103 connect.Wherein, portable equipment is such as mobile phone, tablet computer.Invention human hair It is existing, although although the charge cable that USB Type-A interfaces turn USB Type-C interfaces can realize both types interface equipment Compatible support, but can not the fast charge based on PD agreements between holding equipment.
So existing USB Type-A turn USB Type-C cables and can not realize support to PD agreements, need to improve.
Invention content
The embodiment of the present application provides and USB cable, USB interface and adapter, to solve the current first kind USB interface turns the problem of poor compatibility of the USB interface of Second Type etc..
In a first aspect, the embodiment of the present application provides a kind of USB cable, including control circuit, have power cord, ground wire and The cable of signal of communication line and the USB interface of the first kind at the cable both ends and the USB interface of Second Type are connected to, The USB interface of the first kind includes the first power pins, the first grounding pin, the first communications pins and the first identification and draws Foot, the USB interface of the Second Type include second source pin, the second grounding pin and the second communications pins；
First power pins are connect with the second source pin by the power cord；
First communications pins are connect with second communications pins by the signal of communication line；
First grounding pin and second grounding pin are connected by the ground wire；
The control circuit includes the first pull-up resistor and switch module；Wherein：
First pull-up resistor is connect respectively with the switch module and the power cord；
The switch module respectively with the ground wire, first communications pins, second communications pins and institute State the connection of the first identification pin；When the described first identification pin controls the switch module to be in first state, the switch Module disconnects first pull-up resistor and described for connecting first communications pins and second communications pins Connection between two communications pins；It is described when the described first identification pin also controls the switch module to be in the second state Switch module is used to disconnect the connection between first communications pins and second communications pins, and connect on described first Connection between pull-up resistor and second communications pins.
Further, for being connect with power supply unit, the USB of the Second Type connects the USB interface of the first kind Mouth is used to connect with charging equipment,
Second communications pins are used to receiving the charging control signal that the charging equipment is sent, and by the charging Control signal is sent to first communications pins by the signal of communication line, so that said supply unit is filled according to Electric control signal control said supply unit output target charging voltage and/or target charge current simultaneously pass through first power supply Pin charges to the charging equipment.
Further, when the level on the described first identification pin is the first level, the switch module is in described First state；When the level on the described first identification pin for second electrical level or it is hanging when, the switch module is in described the Two-state, wherein, first level is higher than the second electrical level.
Further, the cable further includes first resistor：
The first resistor is connected between the first identification pin and the switch module.
Further, the switch module, including any one of following：
Metal-oxide-semiconductor switch, triode switch, single-pole double-throw switch (SPDT), double-point double-throw switch.
Further, the switch module includes first switch pipe, second switch pipe, third switching tube and second resistance, Wherein：
The control pole of the first switch pipe is connect with the described first identification pin；
First conducting pole of the first switch pipe is connect with the power cord；
Second conducting pole of the first switch pipe is connected with the ground wire；
The control pole of the second switch pipe is connect with the first conducting pole of the first switch pipe, the second switch pipe The second conducting pole connect with second communications pins, the first conducting pole of the second switch pipe pulls up electric with described first Resistance connection；
The control pole of the third switching tube is connect with the control pole of the first switch pipe；
The third switching tube first conducting pole connect with second communications pins, the third switching tube second Conducting pole is connect with first communications pins；
Described second resistance one end connects the first conducting pole of the first switch pipe, and the other end connects with the power cord It connects.
Further, the switch module further includes 3rd resistor, 3rd resistor one end ground connection, other end connection institute State the control pole of first switch pipe.
Further, the switch module includes single-pole double-throw switch (SPDT), wherein：
The input pin of the single-pole double-throw switch (SPDT) is connect with the described first identification pin；
The common pin of the single-pole double-throw switch (SPDT) is connect with second communications pins；
The normally opened pin of the single-pole double-throw switch (SPDT) with first pull-up resistor for connecting, first pull-up resistor Both ends be respectively used to connect the power cord and the normally opened terminal；
The normally closed pin of the single-pole double-throw switch (SPDT) is used to connect with first communications pins；
The grounding pin of the single-pole double-throw switch (SPDT) is connected with the ground wire；
The single-pole double-throw switch (SPDT) connect for obtaining the pin of electric energy with the power cord.
Further, the switch module further includes the 4th resistance and the 5th resistance, wherein：
Described 4th resistance one end connects the input pin of the single-pole double-throw switch (SPDT), the other end connects the ground wire；
5th resistance includes first end and second end, the first end connect the power cord, the second end with The pin for being used to obtain electric energy of the single-pole double-throw switch (SPDT).
Further, the switch module further includes capacitance：
Described capacitance one end is connected with the ground wire, and the other end is connect with the second end of the 5th resistance.
Further, the cable further includes cable identification chip：
Cable identification chip ground connection, and respectively with the chip power supply pin of the USB interface of the Second Type and institute The connection of signal of communication line is stated, wherein, the overcurrent for characterizing the cable overcurrent capability is stored in the cable identification chip Ability information, the overcurrent capability information read the overcurrent capability information and described excessively electric for the charging equipment Stream ability information is transferred to the adapter by signal of communication line, so that the charging current of adapter output is less than described The preset charged electric current that overcurrent capability information is limited.
Second aspect, the application also provides a kind of USB interface of the first kind, including having the first power pins and first The USB interface ontology of the first kind of grounding pin further includes the first communications pins and the first identification pin；Wherein：
The second source pin that first power pins are used for the USB interface by power cord and Second Type connects；
First communications pins draw for being communicated by signal of communication line with the second of the USB interface of the Second Type Foot connects；
First grounding pin is used to connect by the second grounding pin of ground wire and the USB interface of the Second Type It connects；
Wherein, draw with the ground wire, first communications pins, second communications pins and first identification Foot is connected with a control circuit, and the control circuit includes the first pull-up resistor and switch module；Wherein：
First pull-up resistor is connect respectively with the switch module and the power cord；
When the described first identification pin is for controlling the switch module to be in first state, the switch module is used for First communications pins and second communications pins are connected, and disconnects first pull-up resistor and communicates with described second and draw Connection between foot；When the described first identification pin also controls the switch module to be in the second state, the switch module For disconnecting the connection between first communications pins and second communications pins, and connect first pull-up resistor with Connection between second communications pins.
The third aspect, the application also provides a kind of adapter of the cable provided suitable for the application, including adapter sheet Body and adaptor interface are equipped with the second pull-up resistor, third power pins and the second identification pin in the adaptor interface, In：
The second identification pin is connected to the power cord of the third power pins by second pull-up resistor, uses In in the USB interface of the adapter grafting first kind, the second identification pin is connect with the described first identification pin, So that the first identification pin makes the switch module be in first state when being the first level.
Fourth aspect, the application also provides a kind of adapter of the cable provided suitable for the application, including adapter sheet Body and adaptor interface are equipped with constant-current source, the 4th power pins and third identification pin in the adaptor interface, wherein：
The third identification pin is connected to the power cord of the 4th power pins by the constant-current source, in institute When stating the USB interface of the adapter grafting first kind, the third identification pin with described first identify pin connect so that institute The first identification pin is stated the switch module to be made to be in first state during the first level.
The embodiment of the present application has the beneficial effect that：By adding to identify the line in the usb 10 of the first kind Cable is the first identification pin 17 of the cable of the USB interface 20 of 0 turn of Second Type of usb 1 of traditional first kind Support the demand of the USB interface 20 of 0 turn of Second Type of usb 1 of the identification first kind.By adding 601 He of switch module First communications pins 15 control the break-make and the first communications pins 15 between the first pull-up resistor 30 and signal of communication line 73 And the second break-make between communications pins 25, to realize the usb 10 of compatible PD communication protocols and traditional first kind Turn the USB interface 20 of Second Type.Specifically, the switch module 601 for connect first communications pins 15 with it is described Second communications pins 25, and the connection between first pull-up resistor 30 and second communications pins 25 is disconnected, it is equivalent to Without the first pull-up resistor 30, PD communication protocol communications can be based between the first communications pins 15 and the second communications pins 25, So it is accomplished that a kind of structure for meeting PD communication protocols.When described first identification pin 17 also control the switching molding When block 601 is in the second state, the switch module 601 draws for disconnecting first communications pins 15 and communicating with described second Connection between foot 25, and the connection between first pull-up resistor 30 and second communications pins 25 is connected, it shows as The cable of the USB interface 20 of 0 turn of Second Type of usb 1 of traditional first kind.In this way, being equivalent to realizes a USB Cable supports two kinds of operating modes, a kind of pattern to support PD communication protocols, USB of the another kind to support traditional first kind The pattern of the cable of the USB interface 20 of 10 turns of Second Types of interface.The USB interface of the first kind is improved relative to the prior art The compatibility of the USB interface 20 of 10 turns of Second Types.
Description of the drawings
In order to illustrate more clearly of the technical solution in the embodiment of the present application, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present application, for this For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.
Fig. 1 show the charge cable and adapter that USB Type-A interfaces described in background technology turn USB Type-C interfaces With the attachment structure schematic diagram of portable equipment；
Fig. 2A show the structure diagram of existing USB cable；
Fig. 2 B show one of structure diagram of USB cable of the offer of the embodiment of the present application one；
Fig. 3 show the second structural representation of the USB cable of the offer of the embodiment of the present application one；
Fig. 4 show one of structure diagram of control circuit of the offer of the embodiment of the present application one；
Fig. 5 show the second structural representation of the control circuit of the offer of the embodiment of the present application one；
Fig. 6 show the third structural representation of the USB cable of the offer of the embodiment of the present application one；
Fig. 7 show the structure diagram of the USB interface of the first kind of the offer of the embodiment of the present application two；
Fig. 8 show one of structure diagram of adapter of the offer of the embodiment of the present application three；
Fig. 9 show the second structural representation of the adapter of the offer of the embodiment of the present application three；
Figure 10 show the structure diagram of the USB cable of the offer of the embodiment of the present application four.
Specific embodiment
The application provides and USB cable, USB interface and adapter.In the technical solution provided in the application, in order to make The purpose, technical scheme and advantage of the application are clearer, and the application is described in further detail below in conjunction with attached drawing, Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Based in the application Embodiment, all other embodiment that those of ordinary skill in the art are obtained without making creative work, all Belong to the range of the application protection.
Embodiment one：
Inventor is the study found that the cable that USB Type-C interfaces turn USB Type-C interfaces is to support PD communication protocols Concept product.Due to certain factors, it will take time for the product universal.It is connect at present using more or the first kind USB Mouth turns the cable of the USB interface of Second Type.How the first kind USB interface turn Second Type USB interface cable It realizes to the support of PD communication protocols to improve its compatibility, needs to solve.
Inventor has found that it is that there is no the 56K Ω in Fig. 1 that USB Type-C interfaces, which turn USB Type-C interfaces, First pull-up resistor of (kilo-ohm) left and right.One kind is provided based on the different demands of two kinds of cables, in the embodiment of the present application to change Into cable.
As shown in Figure 2 A, the USB interface for the first kind in the prior art turns the structural representation of the USB interface of Second Type Figure.
Wherein, the usb 10 of the first kind includes the first D- pins 12 of the first power pins VBUS11, the first D+ pins 13rd, the first grounding pin GND14, the first shielding pin SHELL16；
The USB interface 20 of Second Type include second source pin VBUS21, the 2nd D- pins 22, the 2nd D+ pins 23, Second grounding pin GND24, the second communications pins CC25, secondary shielding pin SHELL26 and energization pins VCONN27；
Wherein：
First power pins VBUS11 is connect with second source pin VBUS21 by power cord；Power pins are used for
First D- pins 12 are connect with the 2nd D- pins 22 by being used for transmission the First Line of information；
First D+ pins 13 are connect with the 2nd D+ pins 23 by being used for transmission the second line of information；It is reinstated with D- pins one In the Difference signal pair of transmission USB, for example film is copied to mobile phone, all data are all from this both threads (First Line and the second line) Transmission；
First grounding pin GND14 and the second grounding pin GND24 is connected by being grounded, for being grounded；
Second communications pins CC25 is connected to by the first pull-up resistor 30 on power cord；
Show that the first shielding pin SHELL16 is connected with secondary shielding pin SHELL26 in figure, it should be noted that the First, the 2nd SHELL pins are used to shield D+, D-, VBUS and CC according to treaty rule, for avoiding jamming equipment, wherein arranging Rule can be set according to existing standard and demand, and the application is not illustrated this；
Cable identification chip E-MARK50 is connect respectively with the second communications pins CC25 and chip power supply pin VCONN27； Wherein, chip power supply pin VCONN27 is used to power for E-MARK；It should be noted that E-MARK50 is optional, it is specific real Shi Shi can not have the chip.E-MARK50 is used to identify the ability of overcurrent, and equipment (such as mobile phone) can pass through E- MARK50 and the CC pins of its connection read the content in E-MARK50.Concrete operations are referred to the prior art and do not go to live in the household of one's in-laws on getting married here It states.
The line of above-mentioned each pin, is all contained in cable 40.
0 turn of Second Type USB interface of usb 1 in order to enable the first kind is compatible with PD agreements, the application In embodiment, in the usb 10 of the first kind in addition to comprising original pin being additionally arranged the first identification pin, (i.e. ID draws Foot) and communications pins (i.e. CC pins), and increase control circuit in the cable.Specifically, as shown in Figure 2 B, it is The structure diagram of USB cable provided by the embodiments of the present application.
The cable include control circuit 60, have power cord 71, ground wire 72 and signal of communication line 73 cable 40 and The usb 10 of the first kind at 40 both ends of cable and the USB interface 20 of Second Type are connected to, the first kind Usb 10 includes the first power pins 11, the first grounding pin 14, the first communications pins 15 and the first identification pin 17, institute The USB interface 20 for stating Second Type includes second source pin 21, the second grounding pin 22 and the second communications pins 25；
First power pins 11 are connect with the second source pin 21 by the power cord；
First communications pins 15 are connect with second communications pins 25 by the signal of communication line 73；
First grounding pin 14 and second grounding pin 22 pass through 72 connection of ground wire；
The control circuit 60 includes the first pull-up resistor 30 and switch module 601；Wherein：
First pull-up resistor 30 is connect respectively with the switch module 601 and the power cord 71；
The switch module 601 is grounded 72, first communications pins 15, second communications pins with described respectively 25 and it is described first identification pin 17 connect；When the described first identification pin 17 controls the switch module 601 to be in first During state, the switch module 601 is used to connect first communications pins 15 and second communications pins 25, and disconnect institute State the connection between the first pull-up resistor 30 and second communications pins 25；Described in also being controlled when the described first identification pin 17 When switch module 601 is in the second state, the switch module 601 is used to disconnect first communications pins 15 and described second Connection between communications pins 25, and connect the connection between first pull-up resistor 30 and second communications pins 25.
Wherein, in one embodiment, the usb 10 of the first kind is not support the interface of tow sides blindmate for example For USB Type-A interfaces, B mouthfuls of micro etc.；The USB interface 20 of Second Type is the interface for supporting tow sides blindmate, such as For USB Type-C interfaces, the lighting mouths of apple.
The embodiment of the present application proposes a kind of novel cable.By adding to know in the usb 10 of the first kind The cable is not that the first identification of the cable of the USB interface 20 of 0 turn of Second Type of usb 1 of traditional first kind is drawn Foot 17 come support identification the first kind 0 turn of Second Type of usb 1 USB interface 20 demand.By adding switch module 601 and first communications pins 15 control the break-make between the first pull-up resistor 30 and signal of communication line 73 and the first communication to draw Break-make between 15 and second communications pins 25 of foot, the USB to realize compatible PD communication protocols and traditional first kind connect The USB interface 20 of 10 turns of Second Types of mouth.Specifically, the switch module 601 for connect first communications pins 15 with Second communications pins 25, and disconnect the connection between first pull-up resistor 30 and second communications pins 25, phase When in first pull-up resistor 30, being led between the first communications pins 15 and the second communications pins 25 based on PD communication protocols Letter, so, it is accomplished that a kind of structure for meeting PD communication protocols.When described first identification pin 17 also control the switch When module 601 is in the second state, the switch module 601 communicates for disconnecting first communications pins 15 with described second Connection between pin 25, and the connection between first pull-up resistor 30 and second communications pins 25 is connected, it shows The cable of the USB interface 20 of 0 turn of Second Type of usb 1 for traditional first kind.In this way, being equivalent to realizes one USB cable supports two kinds of operating modes, and a kind of pattern to support PD communication protocols, another kind is supports traditional first kind The pattern of the cable of the USB interface 20 of 0 turn of Second Type of usb 1.The USB of the first kind is improved relative to the prior art The compatibility of the USB interface 20 of 10 turns of Second Types of interface.
Further, in the embodiment of the present application, the usb 10 of the first kind is used for power supply unit (in figure not Show) it connects, the USB interface 20 of the Second Type is used to connect with charging equipment (not shown).
Second communications pins 25 are used to receive the charging control signal that the charging equipment is sent, and fill described Electric control signal is sent to first communications pins 15 by the signal of communication line 73 so that said supply unit according to Charging control signal control said supply unit output target charging voltage and/or target charge current simultaneously pass through described the One power pins 11 charge to the charging equipment.
In this way, when USB cable in the embodiment of the present application is to be charged as purposes, it can be in real time according to charging equipment Charging control signal carries out charge control.
Further, switch module 601 can work according in the following manner：When on the described first identification pin 17 When level is the first level, the switch module 601 is in the first state；Level on the described first identification pin 17 For second electrical level or it is hanging when, the switch module 601 is in second state, wherein, first level is higher than described Second electrical level.When it is implemented, the first level is high level, second electrical level is low level.
In this way, the break-make between the first pull-up resistor 30 and the second communications pins 25 can be realized by different level Control and the break-make control between the first communications pins 15 and the second communications pins 25, control mode are simply easily realized.
Further, the switch module 601, including any one of following：Metal-oxide-semiconductor switch, triode switch, hilted broadsword Commutator, double-point double-throw switch etc..When it is implemented, can be determined according to actual demand using which kind of switch module 601, The embodiment of the present application is not construed as limiting this.
Further, as shown in figure 3, in order to play the role of protecting circuit, the cable further includes first resistor 602： The first resistor 602 is connected between the first identification pin 17 and the switch module 601.Pass through first resistor 602 Voltage or electric current of the loading in switch module 601 can be reduced, can play the role of protecting circuit.
Further, as shown in figure 4, the switch module 601 include first switch pipe 6011, second switch pipe 6012, Third switching tube 6013 and second resistance 6014, wherein：
The control pole of the first switch pipe 6011 is connect with the described first identification pin 17；
First conducting pole of the first switch pipe 6011 is connect with the power cord 71；
Second conducting pole of the first switch pipe 6011 is connect with the ground wire 72；
First conducting pole of the control pole of the second switch pipe 6012 and the first switch pipe 6011 is connect, and described the Second conducting pole of two switching tubes 6012 is connect with second communications pins 25, the first conducting of the second switch pipe 6012 Pole is connect with first pull-up resistor 30；
The control pole of the third switching tube 6013 is connect with the control pole of the first switch pipe 6011；
First conducting pole of the third switching tube 6013 is connect with second communications pins 25, the third switching tube 6013 the second conducting pole is connect with first communications pins 15；
Described 6014 one end of second resistance connects the first conducting pole of the first switch pipe 6011, the other end and the electricity Source line 71 connects.
Further, in order to play the role of protecting circuit, the switch module 601 further includes 3rd resistor 6015, institute 3rd resistor one end ground connection is stated, the other end connects the control pole of the first switch pipe 6011.When it is implemented, 3rd resistor 6015 can set according to actual demand, and the embodiment of the present application is not construed as limiting this.
Wherein, in another embodiment, as shown in figure 5, the switch module 601 includes single-pole double-throw switch (SPDT) 6016 (SPDT) 6016, wherein：
The input pin (IN) of the single-pole double-throw switch (SPDT) 6016 is connect with the described first identification pin 17；
The common pin (COM) of the single-pole double-throw switch (SPDT) 6016 is connect with second communications pins 25；
The normally opened pin (NC) of the single-pole double-throw switch (SPDT) 6016 with first pull-up resistor 30 for connecting, and described The both ends of one pull-up resistor 30 are respectively used to connect the power cord 71 and the normally opened pin；
The normally closed pin (NO) of the single-pole double-throw switch (SPDT) 6016 with first communications pins 15 for connecting；
The grounding pin (GND) of the single-pole double-throw switch (SPDT) 6016 is connect with the ground wire 72；
The single-pole double-throw switch (SPDT) 6016 connect for obtaining the pin (VCC) of electric energy with the power cord 71.
Further, to play the role of protecting circuit, as shown in figure 5, the switch module 601 further includes the 4th resistance 6017 and the 5th resistance 6018, wherein：
Described in described 4th resistance, 6017 one end connects the input pin of the single-pole double-throw switch (SPDT) 6016, the other end connects Ground wire 72；
5th resistance 6018 includes first end and second end, and the first end connects the power cord 71, described the Two ends and the pin for being used to obtain electric energy of the single-pole double-throw switch (SPDT) 6016.
Further, in order to realize to power filter so that entire control circuit 60, which works, more to be stablized, and avoids hilted broadsword double 6016 maloperation of throw switch, the switch module 601 further include capacitance 6019：Described 6019 one end of capacitance and the ground wire 72 Connection, the other end are connect with the second end of the 5th resistance 6018.
Further, as shown in fig. 6, the cable further includes cable identification chip 50：
The cable identification chip 50 is grounded, and respectively with the chip power supply pin of the USB interface of the Second Type 20 It is connected with the signal of communication line 73, wherein, the characterization cable overcurrent capability is stored in the cable identification chip 50 Overcurrent capability information, the overcurrent capability information reads the overcurrent capability information simultaneously for the charging equipment The overcurrent capability information is transferred to the adapter by signal of communication line 73, so that the charging electricity of adapter output Stream is less than the preset charged electric current that the overcurrent capability information is limited.
Embodiment two
Based on identical inventive concept, the embodiment of the present application also provides a kind of such as Fig. 7 institutes of usb 10 of first kind Show, including having 0 ontology of usb 1 of the first kind of the first power pins 1111, (ontology is such as the first kind in Fig. 2A Usb 1 0), further include the first communications pins 15 and the first identification pin 17；Wherein：
Including having 0 ontology of usb 1 of the first power pins 1111 and the first kind of the first grounding pin 14, also Including the first communications pins 15 and the first identification pin 17；Wherein：
First power pins 1111 are used to draw by power cord 71 and the second source of the USB interface 20 of Second Type Foot 21 connects；
First communications pins 15 are used for second with the USB interface 20 of the Second Type by signal of communication line 73 Communications pins 25 connect；
First grounding pin 14 is used for the second ground connection with the USB interface 20 of the Second Type by ground wire 72 Pin 22 connects；
Wherein, 72, first communications pins 15, second communications pins 25 and described first are grounded with described Identification pin 17 is connected with a control circuit 60, and the control circuit 60 includes the first pull-up resistor 30 and switch module 601；Its In：
First pull-up resistor 30 is connect respectively with the switch module 601 and the power cord 71；
When the described first identification pin 17 is for controlling the switch module 601 to be in first state, the switching molding Block 601 is used to connect first communications pins 15 and second communications pins 25, and disconnect first pull-up resistor 30 With the connection between second communications pins 25；When the described first identification pin 17 also controls the switch module 601 to be in During the second state, the switch module 601 is used to disconnect between first communications pins 15 and second communications pins 25 Connection, and connect the connection between first pull-up resistor 30 and second communications pins 25.
Embodiment three
Based on identical inventive concept, the embodiment of the present application also provides a kind of cable suitable for described in the embodiment of the present application Adapter, as shown in figure 8, including adaptor body (not shown) and adaptor interface 90：
The second pull-up resistor 91, the identification pin 93 of third power pins 92 and second are equipped in the adaptor interface 90, Wherein：
The second identification pin 93 is connected to the electricity of the third power pins 92 by second pull-up resistor 91 Source line 71, in 0 (not shown) of usb 1 of the adapter grafting first kind, described second to identify pin 93 connect with the (not shown) first identification pin 17, so that the first identification pin 17 is makes institute during the first level It states 601 (not shown) of switch module and is in first state.
Based on identical inventive concept, the embodiment of the present application also provides another line being suitable for described in the embodiment of the present application The adapter of cable, as shown in figure 9, including adaptor body (not shown) and adaptor interface 90, the adaptor interface In be equipped with constant-current source 901, the 4th power pins 902 and third identification pin 903, wherein：
The third identification pin 903 is connected to the power cord of the 4th power pins 902 by the constant-current source 901 71, in 0 (not shown) of usb 1 of the adapter grafting first kind, third identification pin 903 It is connect with the described first identification 17 (not shown) of pin, so that the first identification pin 17 is described to make during the first level Switch module 601 is in first state.
Wherein, adaptor body includes communications pins and grounding pin.
Example IV
It is NMOS tube with switch module 601 for the ease of understanding the operation principle of USB cable provided by the embodiments of the present application For switch, USB cable provided by the embodiments of the present application is further described.As shown in Figure 10, it is the knot of the USB cable Structure schematic diagram.It is respectively V1, V2 and V3 including three NMOS tubes.Other serial numbers and meaning are with aforementioned in figure, and details are not described herein.
When the usb 10 of the first kind of the USB cable is inserted into adapter shown in Fig. 8, the first identification pin 17 It is connect with the second identification pin of fast charge adapter.Since the second identification pin of fast charge adapter is high level, lead to first Identification pin 17 is high level, and V3 is opened at this time, connects the first communications pins 1515 and the second communications pins 2525, supports PD associations View communication；And V1 is opened, it is low level that the grid of V2, which is drawn, V2 shutdowns, leads to the first pull-up resistor 30 and signal of communication line 73 It disconnects.
When the usb 10 of the first kind of USB cable is inserted into common adapter or desktop computer, due to commonly fitting Orchestration and desktop computer do not have the second identification pin in fast charge adapter as shown in Figure 8, so the USB of the first kind connects First identification pin 17 of mouth 10 is in vacant state (computer USB 2.0 and ordinary recognition device second identify that pin is hanging) (computer USB3.0 interfaces second identify pin ground connection), at this point, 3rd resistor draws the grid of V1 for low level, V1 shutdowns, the grid of V2 It is high level by R3 pull-up, V2 is opened, and the first pull-up resistor 30207 then connect traditional so as to support with signal of communication line 73 The USB interface 20 of 0 turn of Second Type of usb 1 of the first kind；And V3 is turned off, and makes the first communications pins 1515 and second logical Letter pin 2525 is disconnected.
Although the preferred embodiment of the application has been described, those skilled in the art once know basic creation Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims (14)

  1. A kind of 1. USB cable, which is characterized in that the cable including control circuit, with power cord, ground wire and signal of communication line And the USB interface of the first kind at the cable both ends and the USB interface of Second Type are connected to, the first kind USB interface includes the first power pins, the first grounding pin, the first communications pins and the first identification pin, the Second Type USB interface include second source pin, the second grounding pin and the second communications pins；
    First power pins are connect with the second source pin by the power cord；
    First communications pins are connect with second communications pins by the signal of communication line；
    First grounding pin and second grounding pin are connected by the ground wire；
    The control circuit includes the first pull-up resistor and switch module；Wherein：
    First pull-up resistor is connect respectively with the switch module and the power cord；
    The switch module respectively with the ground wire, first communications pins, second communications pins and described One identification pin connection；When the described first identification pin controls the switch module to be in first state, the switch module For connecting first communications pins and second communications pins, and disconnect first pull-up resistor and lead to described second Believe the connection between pin；When the described first identification pin also controls the switch module to be in the second state, the switch Module is used to disconnect the connection between first communications pins and second communications pins, and connects the first pull-up electricity Connection between resistance and second communications pins.
  2. 2. cable according to claim 1, which is characterized in that the USB interface of the first kind is used for and power supply unit Connection, the USB interface of the Second Type are used to connect with charging equipment,
    Second communications pins are used to receiving the charging control signal that the charging equipment is sent, and by the charge control Signal is sent to first communications pins by the signal of communication line, so that said supply unit is controlled according to the charging Signal control said supply unit output target charging voltage processed and/or target charge current simultaneously pass through first power pins It charges to the charging equipment.
  3. 3. cable according to claim 1, which is characterized in that when the level on the described first identification pin is the first level When, the switch module is in the first state；When the level on the described first identification pin is second electrical level or is hanging, The switch module is in second state, wherein, first level is higher than the second electrical level.
  4. 4. cable according to claim 1, which is characterized in that the cable further includes first resistor：
    The first resistor is connected between the first identification pin and the switch module.
  5. 5. cable according to claim 1, which is characterized in that the switch module, including any one of following：
    Metal-oxide-semiconductor switch, triode switch, single-pole double-throw switch (SPDT), double-point double-throw switch.
  6. 6. according to any cables of claim 1-5, which is characterized in that the switch module includes first switch pipe, the Two switching tubes, third switching tube and second resistance, wherein：
    The control pole of the first switch pipe is connect with the described first identification pin；
    First conducting pole of the first switch pipe is connect with the power cord；
    Second conducting pole of the first switch pipe is connected with the ground wire；
    First conducting pole of the control pole of the second switch pipe and the first switch pipe is connect, and the of the second switch pipe Two conducting poles are connect with second communications pins, and the first conducting pole and first pull-up resistor of the second switch pipe connect It connects；
    The control pole of the third switching tube is connect with the control pole of the first switch pipe；
    First conducting pole of the third switching tube is connect with second communications pins, the second conducting of the third switching tube Pole is connect with first communications pins；
    Described second resistance one end connects the first conducting pole of the first switch pipe, and the other end is connect with the power cord.
  7. 7. cable according to claim 6, which is characterized in that the switch module further includes 3rd resistor, the third Resistance one end is grounded, and the other end connects the control pole of the first switch pipe.
  8. 8. according to any cables of claim 1-5, which is characterized in that the switch module includes single-pole double-throw switch (SPDT), Wherein：
    The input pin of the single-pole double-throw switch (SPDT) is connect with the described first identification pin；
    The common pin of the single-pole double-throw switch (SPDT) is connect with second communications pins；
    The normally opened pin of the single-pole double-throw switch (SPDT) with first pull-up resistor for connecting, and the two of first pull-up resistor End is respectively used to connect the power cord and the normally opened terminal；
    The normally closed pin of the single-pole double-throw switch (SPDT) is used to connect with first communications pins；
    The grounding pin of the single-pole double-throw switch (SPDT) is connected with the ground wire；
    The single-pole double-throw switch (SPDT) connect for obtaining the pin of electric energy with the power cord.
  9. 9. cable according to claim 8, which is characterized in that the switch module further includes the 4th resistance and the 5th electricity Resistance, wherein：
    Described 4th resistance one end connects the input pin of the single-pole double-throw switch (SPDT), the other end connects the ground wire；
    5th resistance includes first end and second end, the first end connect the power cord, the second end with it is described The pin for being used to obtain electric energy of single-pole double-throw switch (SPDT).
  10. 10. cable according to claim 9, which is characterized in that the switch module further includes capacitance：
    Described capacitance one end is connected with the ground wire, and the other end is connect with the second end of the 5th resistance.
  11. 11. cable according to claim 2, which is characterized in that the cable further includes cable identification chip：
    Cable identification chip ground connection, and respectively with the chip power supply pin of the USB interface of the Second Type and described logical Believe signal wire connection, wherein, the overcurrent capability for characterizing the cable overcurrent capability is stored in the cable identification chip Information, the overcurrent capability information read the overcurrent capability information and the overcurrent energy for the charging equipment Force information is transferred to the adapter by signal of communication line, so that the charging current of adapter output is less than described excessively electric The preset charged electric current that stream ability information is limited.
  12. 12. a kind of USB interface of the first kind, including having the first power pins and the first kind of the first grounding pin USB interface ontology, which is characterized in that further include the first communications pins and the first identification pin；Wherein：
    The second source pin that first power pins are used for the USB interface by power cord and Second Type connects；
    First communications pins are used to connect by signal of communication line and the second communications pins of the USB interface of the Second Type It connects；
    First grounding pin is used to connect with the second grounding pin of the USB interface of the Second Type by ground wire；
    Wherein, connect with the ground wire, first communications pins, second communications pins and the first identification pin A control circuit is connected to, the control circuit includes the first pull-up resistor and switch module；Wherein：
    First pull-up resistor is connect respectively with the switch module and the power cord；
    When the described first identification pin is for controlling the switch module to be in first state, the switch module is used to connect First communications pins and second communications pins, and disconnect first pull-up resistor and second communications pins it Between connection；When the described first identification pin also controls the switch module to be in the second state, the switch module is used for Disconnect the connection between first communications pins and second communications pins, and connect first pull-up resistor with it is described Connection between second communications pins.
  13. 13. a kind of adapter suitable for cable described in claim 1, special including adaptor body and adaptor interface Sign is, the second pull-up resistor, third power pins and the second identification pin are equipped in the adaptor interface, wherein：
    The second identification pin is connected to the power cords of the third power pins by second pull-up resistor, for During the USB interface of the adapter grafting first kind, the second identification pin is connect with the described first identification pin, so that The first identification pin makes the switch module be in first state when being the first level.
  14. 14. a kind of adapter suitable for cable described in claim 1, special including adaptor body and adaptor interface Sign is, constant-current source, the 4th power pins and third identification pin are equipped in the adaptor interface, wherein：
    The third identification pin is connected to the power cord of the 4th power pins by the constant-current source, for described suitable During the USB interface of the orchestration grafting first kind, third identification pin identify that pin is connect with described first so that described the One identification pin makes the switch module be in first state when being the first level.
CN201710647840.0A 2017-08-01 2017-08-01 USB cable, USB interface and adapter Active CN108233130B (en)

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