CN106201951B - Terminal device, external equipment and power supply system based on USB Type-C interface - Google Patents

Terminal device, external equipment and power supply system based on USB Type-C interface Download PDF

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Publication number
CN106201951B
CN106201951B CN201610570747.XA CN201610570747A CN106201951B CN 106201951 B CN106201951 B CN 106201951B CN 201610570747 A CN201610570747 A CN 201610570747A CN 106201951 B CN106201951 B CN 106201951B
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Prior art keywords
interface
output
usb type
module
receiving
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CN106201951A (en
Inventor
孙学斌
周国栋
李洋
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Hisense Visual Technology Co Ltd
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Qingdao Hisense Electronics Co Ltd
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Priority to CN201610570747.XA priority Critical patent/CN106201951B/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/382Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 – G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/266Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/40Bus structure
    • G06F13/4004Coupling between buses
    • G06F13/4022Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/42Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus

Abstract

The present invention provides a kind of terminal device based on USB Type-C interface, external equipment and power supply system, in the USB Type-C interface for determining external equipment after the voltage and current demand of each power pins, the output of the first feeder ear and the second feeder ear of power supply module is controlled according to power demands, and the first receiving end in control switching module, second receiving end, first output end, the on state of second output terminal, to provide two kinds of voltages to external equipment, so that external equipment is in two kinds of voltage of different sizes of demand, no setting is required voltage conversion circuit, realize the complexity for reducing external equipment circuit, the purpose of save the cost.

Description

Terminal device, external equipment and power supply system based on USB Type-C interface
Technical field
The present embodiments relate to USB Type-C interfacing fields, more particularly to one kind to be based on USB Type-C interface Terminal device, external equipment and power supply system.
Background technique
With the fast development of universal serial bus (Universal Serial Bus, USB) interface, USB interface by Type A interface and Type B interface are evolved to USB Type-C interface.Power transmission (Power Delivery, PD) function is One of the critical function of USB Type-C interface.By PD function, the terminal device for having USB Type-C interface can be it He supports the external equipment of USB Type-C interface to power.Wherein, the terminal device for providing function of supplying power is referred to as main equipment, quilt The external equipment of power supply is referred to as from equipment.In power supply process, main equipment by USB Type-C interface by voltage transmission to from Equipment, to realize to the power supply from equipment.
In general, the voltage that main equipment is capable of providing is relatively simple.However, being needed from equipment a variety of under some scenes Different size of voltage.When main equipment by USB Type-C interface by voltage transmission to from equipment when, from equipment needs pass through The voltage transmitted by USB Type-C interface is converted to the voltage of self-demand, so by the voltage conversion circuit of itself Afterwards, the voltage could be used.During being somebody's turn to do, need in the design voltage conversion circuit from equipment, so that complicated from circuitry, It is at high cost.
Summary of the invention
The present invention provides a kind of terminal device based on USB Type-C interface, external equipment and power supply system, realizes drop The low complexity from circuitry, the purpose of save the cost.
In a first aspect, the embodiment of the present invention provides a kind of terminal device based on USB Type-C interface, the terminal is set It is standby to include:
Power supply module, the power supply module are provided with the first feeder ear and the second feeder ear;
Switching module, the switching module are provided with the first receiving end being connected with first feeder ear, with described the The second connected receiving end of two feeder ears, is additionally provided with first to be connected with the first power pins of the USB Type-C interface Output end, the second output terminal being connected with the second source pin of the USB Type-C interface;
Processor, the processor is configured to the CC pin by the USB Type-C interface receives external equipment Power demands, and according to the power demands, the output of the first feeder ear and the second feeder ear of the power supply module is controlled, and Control the first receiving end in the switching module, the second receiving end, the first output end, second output terminal on state, wherein The power demands are at least two voltage and current demands of the external equipment.
Second aspect, the embodiment of the present invention provide a kind of external equipment based on USB Type-C interface, described external to set It is standby to include:
First by electric module;
Second by electric module;
Switching module, the switching module are provided with the first output end being connected with described first by electric module, and described Second second output terminal being connected by electric module, is additionally provided with the to connect with the first power pins of the USB Type-C interface One receiving end, the second receiving end to connect with the USB Type-C interface second source pin;
Processor, the processor be used for according to described first by electric module and described second by electric module voltage and current Demand generates power demands, and issues the power demands by the CC pin of the USB Type-C interface, wherein the confession Electricity demanding is at least two voltage and current demands of the external equipment.
The third aspect, the embodiment of the present invention provide a kind of power supply system based on USB Type-C interface, including as above Based on USB Type-C interface described in terminal device and second aspect based on USB Type-C interface described in one side External equipment.
Terminal device based on USB Type-C interface, external equipment and power supply system provided in an embodiment of the present invention, It determines in the USB Type-C interface of external equipment after the voltage and current demand of each power pins, is controlled and supplied according to power demands The output of the first feeder ear and the second feeder ear of electric module, and control the first receiving end, the second receiving end, the in switching module The on state of one output end, second output terminal, so that two kinds of voltages are provided to external equipment, so that external equipment is in demand two When planting voltage of different sizes, no setting is required voltage conversion circuit, complexity, the save the cost of realization reduction external equipment circuit Purpose.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of embodiment of the present invention method The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the method for the present invention, For those skilled in the art, without creative efforts, other be can also be obtained according to these attached drawings Attached drawing.
Fig. 1 is the power supply block diagram currently based on USB Type-C interface;
Fig. 2 is that the present invention is based on the structural schematic diagrams of the power supply system embodiment one of USB Type-C interface;
Fig. 3 is that the present invention is based on the structural schematic diagrams of the power supply system embodiment two of USB Type-C interface;
Fig. 4 is that the present invention is based on the citing signals of the switching module of terminal device in the power supply system of USB Type-C interface Figure.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third ", " in above-mentioned attached drawing The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this A little process, methods, the other step or units of product or equipment inherently.
PD function is one of the critical function of USB Type-C interface, and the terminal device with USB Type-C interface is maximum It can support 20 volts (V), 5 amperes (A), i.e., 100 watts (W) of power transmission can be outer with USB Type-C interface Equipment is connect, such as laptop is powered.In power supply process, electricity that terminal device passes through determining external equipment demand of shaking hands Pressure value and current value, by USB Type-C interface by voltage transmission to external equipment, to power for external equipment.Specifically , reference can be made to Fig. 1, Fig. 1 are the power supply block diagram currently based on USB Type-C interface.
Fig. 1 is please referred to, PD chip, USB Type-C interface, configurating channel are each provided on terminal device, external equipment (Configuration Channel, CC) module etc., is additionally provided with main equipment power system modules, main equipment on terminal device Power system modules are connect by PD chip with the USB Type-C interface on terminal device, are additionally provided on external equipment from setting Stand-by power source system module is connect from equipment power system modules by PD chip with the USB Type-C interface on external equipment, The USB Type-C interface interconnection of terminal device, external equipment.In power supply process, the CC module of terminal device is set with external It is communicated between standby CC module, determines the voltage value and current value of external equipment demand, it will be electric by USB Type-C interface Pressure is transmitted to external equipment, to be external equipment, i.e., powers from equipment.
In above-mentioned power supply process, terminal device can provide a kind of voltage.However, partial circumscription equipment generally require it is a variety of The different voltage of voltage value.For example, the TV box separately positioned with TV, needs 5V and 3.3V voltage, at this point, if TV Box is used as from equipment, and TV is as main equipment, it is assumed that main equipment can only provide the voltage of 5V, can satisfy from equipment 5V voltage Demand, but for the 3.3V from device requirement, need the voltage conversion circuit by itself from equipment, 5V voltage converted For 3.3V, then could use.It during being somebody's turn to do, needs that voltage conversion circuit is being arranged from equipment, so that multiple from circuitry It is miscellaneous, at high cost.
In view of this, the embodiment of the present invention provide a kind of terminal device based on USB Type-C interface, external equipment and Power supply system realizes complexity, the purpose of save the cost for reducing external equipment circuit.Specifically, reference can be made to Fig. 2, Fig. 2 are this The structural schematic diagram of power supply system embodiment one of the invention based on USB Type-C interface.
As shown in Fig. 2, the power supply system based on USB Type-C interface mainly includes terminal device in the embodiment of the present invention And external equipment, wherein terminal device includes:
Power supply module 1, the power supply module 1 are provided with the first feeder ear 11 and the second feeder ear 12;
Switching module 2, the switching module 2 be provided with the first receiving end 21 being connected with first feeder ear 11, with The second connected receiving end 22 of second feeder ear 12, is additionally provided with and draws with the first power supply of the USB Type-C interface 3 It the first connected output end 23 of foot 31, the second output terminal that is connected with the second source pin 32 of the USB Type-C interface 3 24;
Processor 4, the processor 4 are configured as receiving external set by the CC pin of the USB Type-C interface 3 Standby power demands, and according to the power demands, control the first feeder ear 11 and the second feeder ear 12 of the power supply module 1 Output, and control the first receiving end 21, the second receiving end 22, the first output end 23, second output terminal in the switching module 2 24 on state, wherein the power demands are at least two voltage and current demands of the external equipment.
External equipment includes:
First by electric module 5;
Second by electric module 6;
Switching module 7, the switching module 7 are provided with the first output end 71 being connected with described first by electric module 5, with Described second second output terminal 72 being connected by electric module 6, is additionally provided with and 8 first power pins of USB Type-C interface 81 the first receiving ends 73 to connect, the second receiving end 74 to connect with the 8 second source pin 82 of USB Type-C interface;
Processor 9, the processor 9 be used for according to described first by electric module 5 and described second by electric module 6 voltage Current needs generate power demands, and issue the power demands by the CC pin of the USB Type-C interface 8, wherein The power demands are at least two voltage and current demands of the external equipment.
In the following, in conjunction with Fig. 2 to the present invention is based in the method for supplying power to of USB Type-C interface, USB Type-C interface and supply Electric process is described in detail.
Firstly, USB Type-C interface.
Specifically, the USB Type-C interface 3 on terminal device is female, and port table is as shown in table 1, outside in above-mentioned Fig. 2 The USB Type-C interface 8 connect in equipment is male connector, and port table is as shown in table 2.
Table 1
Table 2
According to table 1 and table 2: the USB Type-C interface 3 of terminal device and the USB Type-C interface 8 of external equipment It is respectively provided at least 24 connection terminal (pin) feet.By taking the USB Type-C interface 3 of terminal device as an example, shown in table 1 Lower two layers of connection terminal, A1~A12 indicate upper layer 12 connection terminals from left to right respectively, B1~B12 indicate respectively lower layer by 12 connection terminals of right-to-left.It wherein at least include four power pins (A4, the A9 on upper layer and B4, B9 of lower layer), 12 Differential terminal (A2, A3, A6, A7, A10, the A11 on upper layer and B2, B3, B6, B7, B10, B11 of lower layer), four grounded terminal (A1, the A12 on upper layer and B1, B12 of lower layer), two selection terminals (A5 on upper layer and the B5 of lower layer) and two reservation terminals (A8 on upper layer and the B8 of lower layer).
According to table 1: the 3 two rows terminal of USB Type-C interface of terminal device definition just sequence on the contrary, because This, no matter the USB Type-C interface 8 of external equipment just it is slotting or anti-slotting, data connection is the same, that is, is supported just Anti-plug.
In the embodiment of the present invention, processor 4 is allocated the power pins of terminal device, and controls in switching module 2 First receiving end 21, the second receiving end 22, the first output end 23, second output terminal 24 on state, processor 9 sets to external Standby power pins are allocated, and control the first receiving end 71 in switching module 7, the second receiving end 72, the first output end 73, The on state of second output terminal 74, to realize that terminal device provides the purpose of two kinds of voltage to external equipment.
Secondly, working principle.
Specifically, in power supply process, firstly, the processor 9 of external equipment according to first by electric module 5 and second by electric mould The voltage and current demand of block 6, generates power demands, which is each power supply in the USB Type-C interface 8 of external equipment The voltage and current demand of pin;Then, the processor 4 of the processor 9 of external equipment and terminal device carries out handshake communication, will be for Electricity demanding is sent to the processor 4 of terminal device.During being somebody's turn to do, power demands are passed through USB by the processor 9 of external equipment The CC pin of Type-C interface 8, the CC pin of USB Type-C interface 3 are sent to the processor 4 of terminal device;Then, terminal The processor 4 of equipment controls the output of the first feeder ear 11 and the second feeder ear 12 of power supply module 1 according to power demands, and And terminal device according to and external equipment negotiation, the first receiving end 21, the in switching module 2 are controlled according to the result of negotiation Two receiving ends 22, the first output end 23, second output terminal 24 on state, at this time external equipment according to the result of negotiation control The on state of the first receiving end 71, the second receiving end 72, the first output end 73, second output terminal 74 in switching module 7.
Terminal device provided in an embodiment of the present invention based on USB Type-C interface, in the USB for determining external equipment In Type-C interface after the voltage and current demand of each power pins, according to power demands control power supply module the first feeder ear and The output of second feeder ear, and control the first receiving end, the second receiving end, the first output end, second output terminal in switching module On state, to provide two kinds of voltages to external equipment so that external equipment is in two kinds of voltage of different sizes of demand, No setting is required voltage conversion circuit, complexity, the purpose of save the cost of realization reduction external equipment circuit.
In above-described embodiment, the processor 4 of terminal device and the processor 9 of external equipment are external during negotiation Equipment is it needs to be determined that the USB Type-C interface 3 of terminal device with the USB Type-C interface 8 of external equipment is just slotting or anti- It inserts, switching module 7 is then controlled again, to realize the purpose for supporting positive anti-plug.The control of existing USB Type-C is compatible with this Agreement.
Fig. 3 is that the present invention is based on the structural schematic diagrams of the power supply system embodiment two of USB Type-C interface.Please refer to figure 3, power supply system provided in this embodiment, on the basis of above-mentioned Fig. 2, further, the switching module 2 of terminal device is also set up There are the third output end 25 being connected with the third power pins 33 of USB Type-C interface 3, the with USB Type-C interface 3 the 4th The 4th connected output end 26 of power pins 34;Further, power supply module 1 is additionally provided with third feeder ear 13 and the 4th power supply End 14;Switching module 2 be additionally provided with the third receiving end 27 being connected with third feeder ear 13, be connected with the 4th feeder ear 14 Four receiving ends 28;Processor 4 is also used to control the third feeder ear 13 and the 4th feeder ear of power supply module 1 according to power demands 14 output, and control the on state of each receiving end and each output end in switching module 2.Again referring to figure 3., correspondingly, outside Connect equipment switching module 7 be additionally provided with the third receiving end 75 being connected with the third power pins 83 of USB Type-C interface 8, The 4th receiving end 76 being connected with the 4th power pins 84 of USB Type-C interface 8.Further, external equipment is provided with Three by electric module 10 and the 4th by electric module 01;Switching module 7 is additionally provided with the third being connected with third by electric module 10 and exports 77 ends and the 4th output end 78 being connected with the 4th by electric module 01;Processor 9 is specifically used for according to first by electric module 5, the Two, by the voltage and current demand of electric module 01, are generated power demands by electric module the 10, the 4th by electric module 6, third, and are passed through The CC pin of USB Type-C interface 8 issues power demands.
Specifically, in the present embodiment, third is set by electric module the 10, the 4th on external equipment by electric module 01, passes through Processor 9 generates power demands according to each voltage and current demand by electric module, and then processor 9 will by handshake communication Power demands are sent to the processor 4 of terminal device.Terminal equipment side, by power supply module 1 be arranged third feeder ear 13, Corresponding third receiving end 27, the 4th receiving end 28, third output end 25, is arranged in 4th feeder ear 14 in switching module 2 Four output ends 26, so that processor 4 according to power demands, can control each output end output at most 4 of power supply module 1 Road voltage, and then the on state of each receiving end and each output end in switching module 2 is controlled, so that the 4 road voltage passes through respectively The first power pins 31, second source pin 32, third power pins 33 and the 4th power pins of USB Type-C interface 3 34 are input to external equipment.In this way, realize that terminal device can provide the purpose of most four roads voltage for external equipment.
Optionally, in above-mentioned each embodiment, the processor 4 of terminal device is additionally provided with each for detecting power supply module 1 The detection terminal of feeder ear electric current, processor 4 are configured as: when the electric current of the first feeder ear 11 is greater than preset threshold, control Output end idle in each output end and the first receiving end 21 are connected switching module 2.
Specifically, due to the maximum output for supporting 20V, 5A of the USB Type-C interface 3 of terminal device, USB Type-C is connect The current value that each power pins of mouth 3 are able to bear is limited.It therefore, is the normal transmission for guaranteeing voltage, processor 4 is according to cutting The size for changing the mold the current value of each receiving end of block 2 determines the quantity of the output end of each receiving end conducting.The present invention is implemented In example, terminal device can export 1~4 road voltage, when the voltage of terminal device output is 1~3 tunnel, if power supply module 1 The electric current of first feeder ear 11 be greater than preset threshold, then by the first receiving end 21 being connect with first feeder ear 11 with it is multiple defeated Outlet conducting.That is, the voltage of terminal device output is 1~3 tunnel, the feeder ear bigger for electric current, the feeder ear It can be connect with one or more receiving ends of switching module 2, when the voltage of terminal device output is 4 tunnel, power supply module Each feeder ear is connect with a receiving end of switching module 2.For example, terminal device provides two-way voltage, the two-way voltage point It is not exported by the first feeder ear and the second feeder ear, the electric current of the first feeder ear is 1A, and the electric current of the second feeder ear is 3A, then locates The first receiving end 21 and the first output end 23 for managing the control switching module 2 of device 4 are connected, and the first output end 23 and USB Type-C connects Mouthfuls 3 the first power pins 31 (such as A4 terminal) connection, processor 4 control the second receiving end 22 of switching module 2 and second defeated Outlet 24, third output end 25, the conducting of the 4th output end 26, the second source of second output terminal 24 and USB Type-C interface 3 Pin 32 (such as B4 terminal) connection, the third power pins 33 (such as A9 terminal) of third output end 25 and USB Type-C interface 3 Connection, the 4th output end 26 are connect with the 4th power pins 34 (such as B9 terminal) of USB Type-C interface 3.Wherein, work as switching When the output end of module 2 with the power pins of USB Type-C interface 3 with connecting, it can be understood as drawn from power pins The output end of switching module 2 is connect by Vbus by Vbus with the power pins of USB Type-C interface 3.
It should be noted that the configuration of the switching module 2 of terminal device and the switching module 7 of external equipment be it is identical, I.e. switching module 2 and switching module 7 include multiple switch, moreover, each switch and terminal device that switching module 2 includes The connection type of each receiving end and output end, each receiving end of each switch and external equipment that include with switching module 7 And the connection type of output end is identical.In the following, the main switching module 2 for illustrating lower terminal device, specifically, reference can be made to figure 4, Fig. 4 are the present invention is based on the example schematics of the switching module of terminal device in the power supply system of USB Type-C interface.
Referring to figure 4., each receiving end of switching module 2 can be turned on or off with each output end, each output End can be turned on or off with each power pins of USB Type-C interface 3, and processor 4 passes through in control switching module 2 Each switch state, technical solution of the present invention can be realized.Specifically, in power supply process, the processor 4 of terminal device with The processor 9 of external equipment carries out handshake communication, determines voltage and current demand, according to voltage and current demand, terminal device and External equipment is negotiated, and according in each switch of the structure control switching module 2 of negotiation, which needs to be connected, which needs disconnected It opens, and conducting and the sequence of disconnection etc., so that it is defeated to control the first receiving end 21 in switching module 2, the second receiving end 22, first The on state of outlet 23, second output terminal 24.Also, the result of negotiation is also sent to external by terminal device by CC pin The processor 9 of equipment, so that the processor 9 of external equipment is according to the negotiation as a result, each progress for including to switching module 7 It controls, so that the first receiving end 73, the second receiving end 74, the first output end 71, second output terminal 72 in switching module 7 are led Logical state.
Optionally, in above-mentioned each embodiment, the processor 4 of terminal device is also used to, and is detecting the first feeder ear 11 Electric current less than the first preset threshold, the second feeder ear 12 electric current be greater than the second preset threshold when, control will with first receive The first connected output end 23 of end 21 and the first receiving end 21 disconnect, and the first output end 23 and the second receiving end 22 is connected.
Specifically, the electric current of each feeder ear of the power supply module 1 of terminal device is not unalterable, but with The variation of time or other conditions and change, at this time, it may be necessary to adjust the receiving end of switching module 2 and the conducting shape of output end State.For example, terminal device provides two-way voltage when initial, the two-way voltage is defeated by the first feeder ear and the second feeder ear respectively Out, the electric current of the first feeder ear is 1A, and the electric current of the second feeder ear is 3A, then processor 4 controls the first reception of switching module 2 End 21 and the first output end 23 are connected, 31 (such as end A4 of the first power pins of the first output end 23 and USB Type-C interface 3 Son) connection, the second receiving end 22 of the control switching module 2 of processor 4 and second output terminal 24, third output end the 25, the 4th are defeated Outlet 26 is connected, and second output terminal 24 is connect with the second source pin 32 (such as B4 terminal) of USB Type-C interface 3, and third is defeated Outlet 25 is connect with the third power pins 33 (such as A9 terminal) of USB Type-C interface 3, the 4th output end 26 and USB Type- 4th power pins 34 (such as B9 terminal) of C interface 3 connect.After a period of time, processor 4 determines the first feeder ear Electric current is 2A, and the electric current of the second feeder ear is 2A, then the first receiving end 21 of processor control switching module 2 and the first output end 23 and second output terminal 24 be connected, the second receiving end 22 and the second output terminal 24 of control switching module 2 disconnect, only defeated with third Outlet 25 and the conducting of the 4th output end 26.During being somebody's turn to do, to guarantee that power supply system operates normally, first by the confession of current value reduction The corresponding receiving end in electric end and output end disconnect, then by the output of the increased feeder ear of current value corresponding receiving end and the disconnection End conducting.
Optionally, in above-mentioned each embodiment, power demands further include the power supply of USB Type-C interface 8 in external equipment The electric sequence of pin;Processor 4 is also used to determine the electric sequence of the power pins of USB Type-C interface 3, and according to upper State the conducting order of each receiving end and each output end in electric sequence control switching module 2.
Specifically, to guarantee each power supply timing by electric module of external equipment, the processor of terminal device is according to powering on Sequentially, successively each receiving end of switching module 2 is connected with each output end, power-on time difference can be with the processor of external equipment 9 negotiate to obtain.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence;And storage medium above-mentioned include: ROM, RAM, magnetic disk or The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (9)

1. a kind of terminal device based on USB Type-C interface, which is characterized in that
The terminal device includes:
Power supply module, the power supply module are provided with the first feeder ear and the second feeder ear;
Switching module, the switching module are provided with the first receiving end being connected with first feeder ear, supply with described second The second connected receiving end of electric end is additionally provided with the first output being connected with the first power pins of the USB Type-C interface End, the second output terminal being connected with the second source pin of the USB Type-C interface;
Processor, the processor is configured to receiving the power supply of external equipment by the CC pin of the USB Type-C interface Demand, and according to the power demands, the output of the first feeder ear and the second feeder ear of the power supply module is controlled, and control First receiving end in the switching module, the second receiving end, the first output end, second output terminal on state, wherein described Power demands are at least two voltage and current demands of the external equipment;
The processor is additionally provided with the detection terminal for detecting each feeder ear electric current of power supply module, and the processor is configured Are as follows: when the electric current of first feeder ear is greater than preset threshold, the switching module is controlled, it will be idle defeated in each output end Outlet is connected with first receiving end.
2. equipment according to claim 1, which is characterized in that
The switching module be additionally provided with the third output end being connected with the third power pins of the USB Type-C interface, with The 4th connected output end of 4th power pins of the USB Type-C interface.
3. equipment according to claim 2, which is characterized in that
The power supply module is additionally provided with third feeder ear and the 4th feeder ear;
The switching module is additionally provided with the third receiving end being connected with the third feeder ear, is connected with the 4th feeder ear The 4th receiving end;
The processor is also used to control the third feeder ear and the 4th feeder ear of the power supply module according to the power demands Output, and control the on state of each receiving end and each output end in the switching module.
4. equipment according to claim 1 to 3, which is characterized in that
The processor is also used to, in the electric current for detecting the first feeder ear less than the first preset threshold, the electricity of the second feeder ear When stream is greater than the second preset threshold, the first output end being connected with first receiving end and first receiving end are broken in control It opens, and first output end and second receiving end is connected.
5. described in any item equipment according to claim 1~3, which is characterized in that
The processor is also used to determine the electric sequence of the power pins of USB Type-C interface in terminal device, according to institute Electric sequence is stated, the conducting order of each receiving end and each output end in the switching module is controlled.
6. a kind of external equipment based on USB Type-C interface, which is characterized in that
The external equipment includes:
First by electric module;
Second by electric module;
Switching module, the switching module are provided with the first output end being connected with described first by electric module, with described second By the second output terminal that electric module is connected, it is additionally provided with first to connect with the first power pins of the USB Type-C interface and connects Receiving end, the second receiving end to connect with the USB Type-C interface second source pin;
Processor, the processor be used for according to described first by electric module and described second by electric module voltage and current need It asks, power demands is generated, and the power demands are issued by the CC pin of the USB Type-C interface, wherein the power supply Demand is at least two voltage and current demands of the external equipment.
7. external equipment according to claim 6, which is characterized in that
The switching module be additionally provided with the third receiving end being connected with the third power pins of the USB Type-C interface, with The 4th connected receiving end of 4th power pins of the USB Type-C interface.
8. external equipment according to claim 7, which is characterized in that
The external equipment is provided with third by electric module and the 4th by electric module;
The switching module is additionally provided with the third output end being connected with the third by electric module and with the described 4th by electric mould The 4th connected output end of block;
The processor be specifically used for according to described first by electric module, described second by electric module, the third by electric module, Described 4th by electric module voltage and current demand, generate power demands, and pass through the CC pin of the USB Type-C interface Issue the power demands.
9. a kind of power supply system based on USB Type-C interface, which is characterized in that including any one of such as Claims 1 to 5 institute The terminal device stated, and such as the described in any item external equipments of claim 6~8.
CN201610570747.XA 2016-07-19 2016-07-19 Terminal device, external equipment and power supply system based on USB Type-C interface Active CN106201951B (en)

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