Power delivery system and method for universal serial bus socket

Abstract

The invention provides a power transmission system and method for a universal serial bus socket, and the system comprises a plurality of AC-DC conversion modules which are in one-to-one correspondence with a plurality of universal serial bus interfaces; the switch module comprises a first switch sub-module and a second switch sub-module; the first switch sub-module is used for realizing electric connection between the alternating current-direct current conversion module and a corresponding universal serial bus interface; the second switch sub-module is used for realizing electric connection between the alternating current-direct current conversion module and a non-corresponding universal serial bus interface; and a control module which is in communication connection with the plurality of AC-DC conversion modules, the plurality of universal serial bus interfaces and the switch module, and is used for controlling the plurality of AC-DC conversion modules, the first switch sub-module and the second switch sub-module based on the equipment connection information of the plurality of universal serial bus interfaces. And the AC-DC conversion module supplies power to the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

Description

Technical Field

[0001] The present disclosure relates to the field of universal serial bus, and more particularly, to a power delivery system and method for a universal serial bus socket. Background Art

[0002] The existing power transmission solutions of Universal Serial Bus (USB) sockets have technical problems such as low output power, low power conversion efficiency, and insufficient charging flexibility. Summary of the invention

[0003] To address at least some of the above problems, the present disclosure provides a novel power delivery system and method for a universal serial bus socket.

[0004] Based on this, according to one embodiment of the present disclosure, there is provided a power transmission system for a universal serial bus socket, wherein the universal serial bus socket comprises a plurality of universal serial bus interfaces, and the system comprises: a plurality of AC-DC conversion modules corresponding one to one with the plurality of universal serial bus interfaces; a switch module comprising a first switch submodule for realizing electrical connection between the AC-DC conversion module and the corresponding universal serial bus interface, and a second switch submodule for realizing electrical connection between the AC-DC conversion module and the non-corresponding universal serial bus interface; a control module, which is communicatively connected with the plurality of AC-DC conversion modules, the plurality of universal serial bus interfaces and the switch module, and is used to control the plurality of AC-DC conversion modules, the first switch submodule and the second switch submodule based on device connection information of the plurality of universal serial bus interfaces, so as to supply power to the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

[0005] The present disclosure uses an AC-DC conversion module to directly output a variable voltage current, which can reduce the number of modules required for the power transmission system for the universal serial bus socket, reduce the manufacturing cost, reduce the product volume (especially suitable for wall sockets), and improve the power conversion efficiency and output voltage range of the system. In addition, the switch module is used to realize the flexible connection between the AC-DC conversion module and the universal serial bus interface, and the output of multiple AC-DC conversion modules can be flexibly controlled according to whether the universal serial bus interface is plugged with a device, so as to realize the flexible power supply of multiple universal serial bus interfaces, increase the output power range, and significantly improve the charging flexibility of the interface.

[0006] In one embodiment of the present embodiment, the multiple AC-DC conversion modules include a first conversion unit and a second conversion unit, the multiple universal serial bus interfaces include a first interface and a second interface, and the switch module includes a first switch unit, a second switch unit and a third switch unit, wherein the first conversion unit is electrically connected to the first interface via the first switch unit, the second conversion unit is electrically connected to the second interface via the second switch unit, the first conversion unit is electrically connected to the second interface via the third switch unit, and the second conversion unit is electrically connected to the first interface via the third switch unit.

[0007] In one embodiment of the present embodiment, when charging devices are plugged into both the first interface and the second interface, the control module controls the first switch unit and the second switch unit to close, and controls the third switch unit to open, so that the first conversion unit and the second conversion unit independently supply power to the first interface and the second interface respectively.

[0008] In one embodiment of the present embodiment, when a charging device is plugged into the first interface and a charging device is not plugged into the second interface, the control module controls the first switch unit and the third switch unit to close, and controls the second switch unit to open, so that the first conversion unit and the second conversion unit cooperate to supply power to the first interface.

[0009] In an example of this implementation, the output voltage range of each of the multiple AC-DC conversion modules is 5-20V.

[0010] In one example of this implementation, the control module uses an IP2738 chip.

[0011] In an example of this implementation, the AC-DC conversion module uses a flyback power supply.

[0012] According to another embodiment of the present disclosure, there is provided a method for power transmission for a universal serial bus socket, the universal serial bus socket comprising a plurality of universal serial bus interfaces, the method comprising: acquiring device connection information of the plurality of universal serial bus interfaces; generating a first control instruction for controlling a plurality of AC-DC conversion modules and a second control instruction for controlling a switch module based on the device connection information, wherein the plurality of AC-DC conversion modules correspond one-to-one to the plurality of universal serial bus interfaces, the switch module comprising a first switch submodule for realizing electrical connection between the AC-DC conversion module and the corresponding universal serial bus interface, and a second switch submodule for realizing electrical connection between the AC-DC conversion module and a non-corresponding universal serial bus interface; and controlling the plurality of AC-DC conversion modules, the first switch submodule and the second switch submodule based on the first control instruction and the second control instruction to supply power to the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

[0013] In one embodiment of the present embodiment, the multiple AC-DC conversion modules include a first conversion unit and a second conversion unit, the multiple universal serial bus interfaces include a first interface and a second interface, and the switch module includes a first switch unit, a second switch unit and a third switch unit, wherein the first conversion unit is electrically connected to the first interface via the first switch unit, the second conversion unit is electrically connected to the second interface via the second switch unit, the first conversion unit is electrically connected to the second interface via the third switch unit, and the second conversion unit is electrically connected to the first interface via the third switch unit, and the method includes: when both the first interface and the second interface are plugged with charging devices, controlling the first switch unit and the second switch unit to close, and controlling the third switch unit to open, so that the first conversion unit and the second conversion unit independently supply power to the first interface and the second interface respectively.

[0014] In one embodiment of the present embodiment, the method includes: when a charging device is plugged into the first interface and a charging device is not plugged into the second interface, controlling the first switch unit and the third switch unit to close, and controlling the second switch unit to open, so that the first conversion unit and the second conversion unit cooperate to supply power to the first interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present disclosure will be better understood and other objects, details, features and advantages of the present disclosure will become more apparent through the following description of the specific embodiments of the present disclosure given with reference to the following drawings. In the drawings:

[0016] Figure 1A power supply architecture diagram of a power delivery system for a universal serial bus socket in an embodiment of the present disclosure is shown.

[0017] Figure 2 and Figure 3 A circuit schematic diagram of a power delivery system for a universal serial bus socket in an embodiment of the present disclosure is shown.

[0018] Figure 4 A schematic flow chart of a power transmission method for a universal serial bus socket in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0019] The present disclosure is further described in detail below by specific embodiments in conjunction with the accompanying drawings. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0020] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0021] like Figure 1As shown, an embodiment of the present disclosure proposes a power supply architecture diagram of a power transmission system for a universal serial bus socket, the universal serial bus socket includes a plurality of universal serial bus interfaces 10, and the power transmission system includes a plurality of AC-DC conversion modules 12, a switch module 14 and a control module 16. The modules are connected by dashed lines to indicate communication connection relationships, and by solid lines to indicate electrical connection relationships. Among them, the plurality of AC-DC conversion modules 12 correspond to the plurality of universal serial bus interfaces 10 one by one, and the AC-DC conversion module 12 converts the AC power received from the AC power source 20 into the required DC power. The switch module 14 includes a first switch submodule 14a and a second switch submodule 14b. The first switch submodule 14a is used to realize the electrical connection between the AC-DC conversion module 12 and the corresponding universal serial bus interface 10, and the second switch submodule 14b is used to realize the electrical connection between the AC-DC conversion module 12 and the non-corresponding universal serial bus interface 10. The control module 16 is communicatively connected with multiple AC-DC conversion modules 12, multiple universal serial bus interfaces 10 and the switch module 14, and is used to control the multiple AC-DC conversion modules 12, the first switch submodule 14a and the second switch submodule 14b based on the device connection information of the multiple universal serial bus interfaces 10 to power the corresponding or non-corresponding universal serial bus interfaces 10.

[0022] In some examples, the USB socket further includes an AC socket interface 22, and the AC power source 20 supplies power to the AC socket interface 22 via an AC power delivery system 24. The power delivery system proposed in the disclosure can work in parallel with the AC power delivery system supplying power to the AC socket interface without interfering with each other.

[0023] In some examples, multiple AC-DC conversion modules 12 include a first conversion unit 122 and a second conversion unit 124, multiple universal serial bus interfaces 10 include a first interface 102 and a second interface 104, and the switch module 14 includes a first switch unit 142 (also a first switch sub-module 14a), a second switch unit 144 (also a first switch sub-module 14a) and a third switch unit 146 (also a second switch sub-module 14b), wherein the first conversion unit 122 is electrically connected to the first interface 102 via the first switch unit 142, the second conversion unit 124 is electrically connected to the second interface 104 via the second switch unit 144, the first conversion unit 122 is electrically connected to the second interface 104 via the third switch unit 146, and the second conversion unit 124 is electrically connected to the first interface 102 via the third switch unit 146.

[0024] In some examples, when charging devices are plugged into both the first interface 102 and the second interface 104, the control module 16 controls the first switch unit 142 and the second switch unit 144 to close, and controls the third switch unit 146 to open, so that the first conversion unit 122 and the second conversion unit 124 independently supply power to the first interface 102 and the second interface 104, that is, the first conversion unit 122 outputs direct current that complies with the first interface 102, and the second conversion unit 124 outputs direct current that complies with the second interface 104, and the outputs of the first conversion unit 122 and the second conversion unit 124 do not interfere with each other.

[0025] In other examples, when a charging device is plugged into the first interface 102 and a charging device is not plugged into the second interface 104, the control module 16 controls the first switch unit 142 and the third switch unit 146 to be closed, and controls the second switch unit 144 to be disconnected, so that the first conversion unit 122 and the second conversion unit 124 cooperate to supply power to the first interface 102. For example, when the charging device plugged into the first interface 102 requires a DC output of 20V and 3A and the second interface 104 is not plugged in, the control module 16 can control the first conversion unit 122 and the second conversion unit 124 to output a DC output of 20V and 1.5A respectively. For another example, when the charging device plugged into the first interface 102 requires a power output of 30W and the second interface 104 is not plugged in, the control module 16 can control the first conversion unit 122 and the second conversion unit 124 to output 10W and 20W respectively, or can control the first conversion unit 122 and the second conversion unit 124 to output 15W respectively.

[0026] Similarly, when the first interface 102 is not plugged with a charging device and the second interface 104 is plugged with a charging device, the implementation of the control module 16 is similar to the implementation described above where the first interface 102 is plugged with a charging device and the second interface 104 is not plugged with a charging device, so it is not repeated here.

[0027] In some examples, the rated output of the AC power supply 20 is 120VAC. In some examples, the output voltage range of each of the AC-DC conversion modules 12 is 5-20V (for example, the standard voltages of 5V, 9V, 12V, 15V and 20V of the USB-PD protocol can be output). In some examples, the control module 16 communicates with the AC-DC conversion module 12 via a bidirectional two-wire synchronous serial bus (I2C bus). In some examples, the control module 16 uses an IP2738 chip. In some examples, the AC-DC conversion module 12 uses a flyback power supply. The flyback switching power supply has the advantages of simple circuit, small size, suitable for low power or multi-channel output occasions, and the voltage device has the functions of energy storage and voltage conversion isolation, etc., and is particularly suitable for wall sockets with multiple universal serial bus interfaces.

[0028] Furthermore, if Figure 2 and Figure 3 As shown, an embodiment of the present disclosure provides a circuit schematic diagram of a power delivery system for a universal serial bus socket, wherein: Figure 2 FIG. 1 is a circuit diagram of an AC-DC conversion module 12 and an AC power source 20. Figure 3 1 is a circuit schematic diagram of the switch module 14 and the control module 16 . Figure 2 and Figure 3 Take two AC-DC conversion modules 12 and two universal serial bus interfaces 10 as an example, but it should be noted that: Figure 2 and Figure 3 This is for exemplary purposes only, and the present disclosure does not limit the number of any module units.

[0029] Specifically, the IP2738 chip in the control module 16 is connected to the AC-DC conversion module 12 through the InnoSwitch3-Pro chip, which is a digital constant voltage / constant current offline flyback quasi-resonant switch integrated circuit that integrates high-voltage switch, synchronous rectification and FluxLink feedback functions. The IP2738 chip controls the electrical connection between the first conversion unit 122 and the first interface 102 by controlling the on and off of the switch Q5, controls the electrical connection between the second conversion unit 124 and the second interface 104 by controlling the on and off of the switch Q6, and controls the electrical connection between the first conversion unit 122 and the second interface 104 and the electrical connection between the second conversion unit 124 and the first interface 102 by controlling the on and off of the switches Q7 and Q8.

[0030] In some examples, the power delivery system further includes a protection unit 18, which uses a transient voltage suppressor to protect the universal serial bus interface. For example, the C1-D+, C1-D-, C1-CC1, and C1-CC2 ports of the first interface 102 are protected by TVS1, TVS2, TVS3, and TVS4, and the C2-D+, C2-D-, C2-CC1, and C2-CC2 ports of the second interface 104 are protected by TVS5, TVS6, TVS7, and TVS8.

[0031] In some examples, the third switch unit 146 includes a switch Q7, a switch Q8, a resistor R42, and a resistor R43, wherein the drain (D) of the switch Q7 is electrically connected to the output end of the first conversion unit 122, the source (S) of the switch Q7 is electrically connected to the source (S) of the switch Q8, and the gate (G) of the switch Q7 is electrically connected to the control end VOUT3G of the chip IP2738; the drain (D) of the switch Q8 is electrically connected to the output end of the second conversion unit 124, and the gate (G) of the switch Q8 is electrically connected to the control end VOUT4G of the chip IP2738. The switch module 14 can select any controllable switch components to realize the flexible power supply of multiple AC-DC conversion modules to multiple universal serial bus interfaces, and the present disclosure does not limit the type, quantity, and form of the switch components.

[0032] like Figure 4 As shown, an embodiment of the present disclosure provides a flowchart of a power transmission method 40 for a USB socket, wherein the USB socket includes a plurality of USB interfaces. The method includes steps S402-S406, which are described as follows.

[0033] Step S402: Acquire device connection information of the plurality of universal serial bus interfaces.

[0034] Step S404, generating a first control instruction for controlling a plurality of AC-DC conversion modules and a second control instruction for controlling a switch module based on the device connection information, wherein the plurality of AC-DC conversion modules correspond one-to-one to the plurality of universal serial bus interfaces, and the switch module comprises a first switch sub-module for realizing an electrical connection between the AC-DC conversion module and the corresponding universal serial bus interface, and a second switch sub-module for realizing an electrical connection between the AC-DC conversion module and a non-corresponding universal serial bus interface.

[0035] Step S406: Control the multiple AC-DC conversion modules, the first switch submodule, and the second switch submodule based on the first control instruction and the second control instruction to power the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

[0036] This embodiment is similar to the implementation of the power delivery system for a USB socket described above, and thus will not be described in detail herein.

[0037] This article is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications can be made to the exemplary embodiments without departing from the scope of this article. Although the principles of this article have been shown in various embodiments, many modifications of structures, arrangements, proportions, elements, materials and components that are particularly suitable for specific environments and operational requirements can be used without departing from the principles and scope of this disclosure. The above modifications and other changes or modifications will be included in the scope of this article. The foregoing specific description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Therefore, consideration of this disclosure will be in an illustrative rather than restrictive sense, and all these modifications will be included in its scope. Similarly, the advantages, other advantages and solutions to the problems of various embodiments have been described above. However, the benefits, advantages, solutions to the problems and any elements that can produce these, or solutions that make them more clear should not be interpreted as critical, necessary or necessary. As used herein, the term "include" and any other variations thereof are non-exclusive inclusions, such that a process, method, article, or device that includes a list of elements includes not only those elements, but also other elements that are not explicitly listed or that are not part of the process, method, system, article, or device. In addition, as used herein, the term "coupled" and any other variations thereof refer to physical, electrical, magnetic, optical, communicative, functional, and / or any other connection.

[0038] Those skilled in the art will appreciate that many changes may be made to the details of the above-described embodiments without departing from the basic principles of the present disclosure. Therefore, the scope of the present disclosure should be determined solely by the claims.

Claims

1. A power delivery system for a universal serial bus socket, the universal serial bus socket comprising a plurality of universal serial bus interfaces, the system comprising: A plurality of AC-DC conversion modules corresponding one to one with the plurality of universal serial bus interfaces; a switch module, comprising a first switch submodule for realizing electrical connection between the AC-DC conversion module and a corresponding universal serial bus interface, and a second switch submodule for realizing electrical connection between the AC-DC conversion module and a non-corresponding universal serial bus interface; a control module, which is in communication with the multiple AC-DC conversion modules, the multiple universal serial bus interfaces, and the switch module, and is used to control the multiple AC-DC conversion modules, the first switch submodule, and the second switch submodule based on device connection information of the multiple universal serial bus interfaces, so as to supply power to the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

2. The power transmission system according to claim 1, wherein: The multiple AC-DC conversion modules include a first conversion unit and a second conversion unit, the multiple universal serial bus interfaces include a first interface and a second interface, and the switch module includes a first switch unit, a second switch unit and a third switch unit, wherein the first conversion unit is electrically connected to the first interface via the first switch unit, the second conversion unit is electrically connected to the second interface via the second switch unit, the first conversion unit is electrically connected to the second interface via the third switch unit, and the second conversion unit is electrically connected to the first interface via the third switch unit.

3. The power transmission system according to claim 2, wherein: When charging devices are plugged into both the first interface and the second interface, the control module controls the first switch unit and the second switch unit to close, and controls the third switch unit to open, so that the first conversion unit and the second conversion unit can independently supply power to the first interface and the second interface respectively.

4. The power transmission system according to claim 2, wherein: When a charging device is plugged into the first interface and a charging device is not plugged into the second interface, the control module controls the first switch unit and the third switch unit to close, and controls the second switch unit to open, so that the first conversion unit and the second conversion unit cooperate to supply power to the first interface.

5. The power transmission system according to claim 1, wherein: Each of the multiple AC-DC conversion modules has an output voltage range of 5-20V.

6. The power transmission system according to claim 1, wherein: The control module adopts IP2738 chip.

7. The power transmission system according to claim 1, wherein: The AC-DC conversion module adopts a flyback power supply.

8. A method for delivering power to a universal serial bus socket, the universal serial bus socket comprising a plurality of universal serial bus interfaces, the method comprising: Acquire device connection information of the plurality of universal serial bus interfaces; Generate a first control instruction for controlling a plurality of AC-DC conversion modules and a second control instruction for controlling a switch module based on the device connection information, wherein the plurality of AC-DC conversion modules correspond one-to-one to the plurality of universal serial bus interfaces, and the switch module comprises a first switch submodule for realizing an electrical connection between the AC-DC conversion module and the corresponding universal serial bus interface, and a second switch submodule for realizing an electrical connection between the AC-DC conversion module and a non-corresponding universal serial bus interface; The plurality of AC-DC conversion modules, the first switch submodule and the second switch submodule are controlled based on the first control instruction and the second control instruction to supply power to the universal serial bus interface corresponding to or not corresponding to the AC-DC conversion module.

9. The power transmission method according to claim 8, wherein: The multiple AC-DC conversion modules include a first conversion unit and a second conversion unit, the multiple universal serial bus interfaces include a first interface and a second interface, the switch module includes a first switch unit, a second switch unit and a third switch unit, wherein the first conversion unit is electrically connected to the first interface via the first switch unit, the second conversion unit is electrically connected to the second interface via the second switch unit, the first conversion unit is electrically connected to the second interface via the third switch unit, and the second conversion unit is electrically connected to the first interface via the third switch unit, and the method includes: When charging devices are plugged into both the first interface and the second interface, the first switch unit and the second switch unit are controlled to be closed, and the third switch unit is controlled to be opened, so that the first conversion unit and the second conversion unit can independently supply power to the first interface and the second interface respectively.

10. The power transmission method according to claim 9, comprising: When a charging device is plugged into the first interface and a charging device is not plugged into the second interface, the first switch unit and the third switch unit are controlled to be closed, and the second switch unit is controlled to be opened, so that the first conversion unit and the second conversion unit cooperate to supply power to the first interface.

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