WO2020029486A1

WO2020029486A1 - Multi-function extension device and electronic system

Info

Publication number: WO2020029486A1
Application number: PCT/CN2018/118993
Authority: WO
Inventors: 肖文俊; 彭多文; 徐业友; 林振传; 宁世文
Original assignee: 深圳市元创时代科技有限公司
Priority date: 2018-08-10
Filing date: 2018-12-03
Publication date: 2020-02-13
Also published as: CN208461155U

Abstract

A multi-function extension device and an electronic system comprising the multi-function extension device and an electronic device connected thereto. The multi-function extension device comprises a shell (11), a power circuit board (12), and a hub unit (13). A data interface (131) and a charging unit (14) are provided on the surface of the shell. The power circuit board is electrically connected to the charging unit, and the data interface is electrically connected to the hub unit. The data interface comprises a connection interface (1311) and an extension interface (1312), and the connection interface is used for connecting an electronic device. The multi-function extension device can wirelessly charge the electronic device by means of a wireless charging unit, and can realize extension of the data interface of the electronic device by means of a plurality of data interfaces, so that the electronic device can be in data transmission with different apparatuses, and the functional integration is high.

Description

Multifunctional expansion device and electronic system

Cross-reference to related applications

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on August 10, 2018 with the application number 201821287991.6, entitled "Multifunctional Expansion Device", the entire contents of which are incorporated herein by reference.

Technical field

The present application relates to the field of electronic equipment accessories, and in particular, to a multifunctional expansion device and an electronic system.

Background technique

Smart terminals such as desktop computers, tablet computers, and mobile phones are indispensable electronic devices for office entertainment. Most electronic devices can implement data interaction with external devices by setting different interfaces. Due to the limited size of the existing electronic devices, the number of interfaces that can be set on the existing electronic devices is also limited, and the external devices are diverse, and the types of interfaces of different external devices are not the same. It is difficult for existing electronic devices to communicate with External devices with different types of interfaces are fully interconnected, and therefore have a certain impact on the diversity of electronic device functions.

Based on this, interface expansion devices configured for electronic equipment have gradually emerged in the market. However, the existing interface expansion devices only serve the function of interface expansion, and the functions are relatively single, which cannot meet the functions of electronic devices with various charging methods and interfaces. Expansion requirements.

Application content

In view of this, the object of the present application is to improve at least one of the problems in the prior art, and to provide a multifunctional expansion device and an electronic system with a charging function and a data interface expansion function.

Some technical solutions provided in this application can be referred to as follows:

The multifunctional expansion device includes a casing, a power supply circuit board and a hub unit, and the surface of the casing is provided with a data interface and a charging unit;

The power supply circuit board is electrically connected to the charging unit, and the data interface is electrically connected to the hub unit;

The data interface includes a connection interface and an expansion interface, and the connection interface is configured to be connected to an electronic device.

As a further optional solution to the foregoing multifunctional expansion device, the connection interface includes a TYPE-C interface.

As a further optional solution to the above multifunctional expansion device, the expansion interface includes one or more of a USB interface, a TYPE-C interface, a display interface, a card reader interface, a network interface, and an audio interface.

As a further optional solution to the above multifunctional expansion device, the display interface includes one or more of an HDMI interface, a DP interface, a VGA interface, and a DVI interface; the card reader interface includes an SD card interface, One or more of a Mini SD card interface and a Memory Stick card interface; the network interface includes an Ethernet interface; and the audio interface includes one of a fiber interface, a coaxial interface, an AUX interface, a stereo interface, and an AV interface Or more.

As a further optional solution to the multifunctional expansion device, a mains socket is provided on the surface of the casing, and the mains socket is electrically connected to the power supply circuit board.

As a further optional solution to the above multifunctional expansion device, the mains socket is an 8-bit tail socket.

As a further optional solution to the above-mentioned multifunctional expansion device, the multifunctional expansion device further includes a shield plate, which shields the power supply circuit board and the line concentrating unit.

As a further optional solution to the above multifunctional expansion device, the shielding plate is an aluminum alloy plate.

As a further optional solution to the above multifunctional expansion device, a high voltage to low voltage circuit is provided on the power supply circuit board.

As a further optional solution to the above multifunctional expansion device, the high-voltage to low-voltage circuit is configured to convert a preset power frequency AC voltage to a voltage set by the PD protocol.

As a further optional solution to the above multifunctional expansion device, the charging unit is a wireless charging unit, and a charging plate of the wireless charging unit covers a surface of the casing.

As a further optional solution to the above multifunctional expansion device, the wireless charging unit is configured to be charged by electromagnetic induction.

As a further optional solution to the above multifunctional expansion device, the wireless charging unit includes a plurality of coil arrays.

As a further optional solution to the above multifunctional expansion device, the charging unit is a wired charging unit, and a charging socket of the wired charging unit is provided on a surface of the casing.

As a further optional solution to the above multifunctional expansion device, the charging unit is disposed on a main plane of the casing, and the data interface is disposed on a side of the casing.

As a further optional solution to the above multifunctional expansion device, a power indicator light is provided on the surface of the casing.

As a further optional solution to the above multifunctional expansion device, the data interface is configured to transmit data with the electronic device for transmission and / or charge the electronic device. The electronic system includes an electronic device and the multifunctional expansion device according to any one of the above, which is connected to the electronic device.

The multifunctional expansion device and electronic system of the present application have at least one of the following advantages:

The multifunctional expansion device can charge the electronic device through the charging unit, and the data interface of the electronic device can be extended through multiple data interfaces, so that the electronic device can form data transmission with various devices, and has a high degree of functional integration.

In order to make the above-mentioned objects, features, and advantages of this application more obvious and easy to understand, the preferred embodiments are described below in detail with the accompanying drawings as follows.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the embodiments of the present application more clearly, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without paying creative work.

FIG. 1 shows an isometric view of the overall structure of a multifunctional expansion device provided by an embodiment of the present application;

FIG. 2 shows a plan view of the overall structure of a multifunctional expansion device provided by an embodiment of the present application; FIG.

3 shows a front view of the overall structure of a multifunctional expansion device provided by an embodiment of the present application;

4 shows a right side view of the overall structure of the multifunctional expansion device provided by the embodiment of the present application;

FIG. 5 shows an exploded structure diagram of a multifunctional expansion device provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of an electronic system according to an embodiment of the present application.

Icon: 1-multifunctional expansion device; 11-shell;

12-power supply circuit board; 13-hub unit;

131-data interface 1311-connection interface

1312-Expansion interface; 14-Charging unit;

15-Wireless charging board; 16-Utility socket;

17-shield plate 18-indicator light

2-electronic equipment.

detailed description

Hereinafter, various embodiments of the present application will be described more fully with reference to the accompanying drawings. This application may have various embodiments and adjustments and changes may be made therein. Therefore, the present application will be described in more detail with reference to specific embodiments shown in the accompanying drawings. It should be understood, however, that there is no intention to limit the various embodiments of this application to the specific embodiments herein, but rather this application should be construed to cover the spirit and scope of the various embodiments that fall within this application. All adjustments, equivalents, and / or alternatives. In conjunction with the description of the drawings, the same reference numerals indicate the same elements.

In the following, the terms "including" or "may include" that can be used in various embodiments of the present application indicate the existence of the claimed function, operation, or element, and do not limit the existence of one or more functions, operations, or elements. increase. In addition, as used in various embodiments of the present application, the terms "including", "having" and their cognate words are only intended to indicate a particular feature, number, step, operation, element, component, or combination of the foregoing, And should not be understood as first excluding the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or adding one or more features, numbers, steps, operations, elements, components Or a combination of the foregoing.

In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

The expressions used in the various embodiments of the present application (such as “first”, “second”, etc.) may modify various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of various embodiments of the present application, a first element may be referred to as a second element, and likewise, a second element may be referred to as a first element.

It should be noted that if it is described that one constituent element is “connected” to another constituent element, the first constituent element may be directly connected to the second constituent element and the “connection” may be “connected” between the first constituent element and the second constituent element "The third component. In contrast, when one constituent element is “directly connected” to another constituent element, it can be understood that there is no third constituent element between the first constituent element and the second constituent element.

The terminology used in the various embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of the present application. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present application belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized or overly formal meaning, Unless clearly defined in the various embodiments of this application.

Examples

Please refer to FIGS. 1 to 5 together. This embodiment provides a multifunctional expansion device 1, which includes a casing 11, a power supply circuit board 12, and a hub unit 13. The surface of the casing 11 is provided with a data interface 131 and a charging unit 14. The power supply circuit board 12 is electrically connected to the charging unit 14, and the data interface 131 is electrically connected to the hub unit 13. The data interface 131 includes a connection interface 1311 and an expansion interface 1312. The connection interface 1311 is configured to be connected to an electronic device. Specifically, the connection interface 1311 is configured to be connected to an external electronic device. After the electronic device is connected to the connection interface 1311 of the multifunctional expansion device 1, the function expansion can be implemented by means of the multifunctional expansion device 1. The function expansion may include charging. Extended functions and / or interface extended functions. The multifunctional expansion device mentioned in this embodiment may also be directly referred to as an expansion device or an expansion device of an electronic device.

As described above, the multifunctional expansion device 1 is an expansion device having both a charging function and an interface expansion function. That is, the multifunctional expansion device 1 can provide a charging function and an interface expansion function for the electronic device after being connected to the electronic device.

The casing 11 is used for accommodating and carrying other components of the multifunctional expansion device, such as accommodating circuit components in the casing 11 and forming an electrical connection or data between the data interface 131 and the charging unit 14 and the outside The interconnected structures or components are exposed on the surface of the casing 11.

In this embodiment, the charging unit 14 may be a wireless charging unit, and the wireless charging plate 15 is exposed on the surface of the casing 11. The charging unit 14 is disposed under the wireless charging plate 15 and has a wireless charging function for mobile phones, smart watches, and the like. The electronic device is wirelessly charged. The power of these electronic devices is usually small, and the wireless charging method of the charging unit 14 usually adopts an electromagnetic induction type. The charging unit 14 that provides the charging function and the electronic device to be charged transfer energy in a magnetic field. No electrical connection is required between the two, which is more flexible and convenient. In some embodiments, the charging unit 14 includes a plurality of small coil arrays, which can generate a magnetic field when energized, and transmit energy to an electronic device equipped with a dedicated receiving coil through the magnetic field, thereby wirelessly charging external electronic devices. The receiving coil is usually supported by a magnetic alloy wound with wires. The overall size and shape of the receiving coil is similar to chewing gum and can be easily attached to electronic equipment. The charging unit 14 performs energy coupling with a receiving coil on the electronic device, thereby realizing energy transfer.

In this embodiment, the charging unit 14 can be wirelessly charged using a fast charging method. The charging unit 14 is equipped with a fast charging protocol, which can improve the wireless charging efficiency and can charge more electrical power to the electronic device in a unit time. In some embodiments, the fast charging protocol may be a QC2.0, QC3.0, or QC4.0 fast charging protocol, or the like. Different fast charging protocols require different types of ports, charging current, output voltage, and charging power.

In other embodiments, the charging unit 14 may also be a wired charging unit, and a charging socket is provided on the surface of the casing 11. The charging socket can be provided on the surface of the casing or on the side wall of the casing.

The multiple data interfaces 131 connected to the hub unit 13 form an interface expansion unit of the multifunctional expansion device 1.

The connection interface 1311 is used to connect with an electronic device such as a notebook computer as an input interface of the interface extension unit, and the extension interface 1312 is used to connect with other electronic devices as an output interface of the interface extension unit. The connection interface 1311 is electrically connected to the extension interface 1312, so that when the electronic device is electrically connected to the connection interface 1311, the extension interface 1312 forms an electrical connection with the electronic device. As the data interface 131 on the electronic device, the extension interface 1312 can Output or input data to or from an electronic device.

As the size of electronic devices becomes smaller and smaller, small bodies usually require smaller and thinner ports. Based on this, in this embodiment, the connection interface 1311 mainly includes a TYPE-C interface for connecting with electronic devices such as notebook computers. Extending other interfaces to the notebook computer, that is, the expansion interface 1312 is used as the interface of the notebook computer. Type-C interface is a connection interface of USB interface. It can be inserted regardless of the front and back sides. Its size is smaller than other USB interfaces, and it can supply power in both directions. It can charge the device itself or externally. The device supplies power, and because it supports the USB-PD power supply standard, the maximum power supply is higher than other USB interfaces, which greatly improves the charging speed. In addition, the Type-C interface is suitable for high-speed USB3.1 speed specifications, and the data transmission speed is high. Furthermore, the Type-C interface is very scalable and can be extended to a variety of audio and video output interfaces, such as HDMI, DVI, and VGA interfaces. In summary, the Type-C interface is small and thin, easy to use, and can also integrate charging, data transmission, and video output. Therefore, in this embodiment, the TYPE-C interface is mainly selected as the connection interface 1311.

It can be understood that the connection interface 1311 can also be other types of interfaces, which can be selected according to specific usage requirements.

At the same time, the connection interface 1311 also has a charging function, capable of supplying power to a notebook computer, and supporting a PD power supply protocol.

The expansion interface 1312 may include one or more of a USB interface, a TYPE-C interface, a Micro-USB interface, a display interface, a card reader, a network interface, and an audio interface.

There can be multiple USB interfaces, which can be USB2.0, USB3.0, USB3.1 and other transmission specification interfaces, which are mainly used for data transmission and charging.

As an extension interface 1312, the TYPE-C interface is used to transmit data, supports the USB3.1GEN2 transmission specification, and supports theoretical high-speed transmission of 10GBPS.

The display interface can be an HDMI interface, which can support multiple resolution interfaces such as 1080P, 4K / 30Hz, 4K / 60Hz, and other display interfaces such as DP / VGA / DVI.

The card reader may be an IC card reader. By inserting a memory card into the card reader for data reading, the card reader interface may be an SD card interface, a Mini SD card interface, a Memory Stick card interface, and the like.

The network interface may be an Ethernet interface, such as one or more of an RJ-45 interface, an RJ-11 interface, an SC fiber interface, an FDDI interface, an AUI interface, a BNC interface, and a Console interface.

The audio interface may be one or more of a fiber interface, a coaxial interface, an AUX interface, a stereo interface, and an AV interface.

As mentioned above, the type of the expansion interface 1312 may be one or more, and the number of one type of the expansion interface 1312 may be one or more. Different types and different numbers of expansion interfaces 1312 can be selected according to the size of the socket body and the requirements of the multiple expansion interfaces 1312.

The data interface 131 has functions of data transmission and charging. Specifically, as described above, the connection interface 1311 has functions of data transmission and charging, and some extended interfaces 1312, such as a USB interface, have functions of data transmission and charging.

The power supply circuit board 12 of the multifunctional expansion device 1 supplies power to the charging unit 14 and the hub unit 13. The power is mainly connected to the power supply circuit board 12 through a cable. The power supply circuit board 12 is provided with a high voltage to low voltage circuit. In some embodiments, the high voltage to low voltage circuit can be configured to convert a preset power frequency AC voltage The voltage set for the PD protocol. For example, the power supply circuit board 12 converts 100-240V mains power (that is, power frequency AC power) into 5V / 9V / 12V / 15V / 20V and other PD (Power Delivery) protocol specified power supply voltage. The charging unit 14 can adapt to the voltage corresponding to the electronic device to supply power when charging the electronic device, and the hub unit 13 can adapt to the voltage corresponding to the electronic device to supply power when supplying the electronic device.

A mains socket 16 is provided on the surface of the casing 11, and the mains socket 16 is electrically connected to the power supply circuit board 12. The multifunctional expansion device 1 connects the city power (that is, the above-mentioned preset power frequency AC power) through the city power socket 16 and forms a plug-in plug connection with the corresponding plug, so as to connect with the power cable. Disassembly simplifies the structure of the multifunctional expansion device 1, making the multifunctional expansion device 1 more portable for storage and use, and more flexible in use.

As shown in Figure 4, the mains socket 16 can be an 8-tailed socket (also known as an 8-tailed power interface). The 8-tailed socket is to prevent random insertion of substandard wires. Only the original or the same size as the original Only the plug can be inserted, which enhances the standardization and security of the utility power supply of the multifunctional expansion device. In this embodiment, the casing 11 may be a rectangular parallelepiped casing 11, the largest surface of the casing 11 is the main plane, and a charging unit 14 is provided thereon. This embodiment is a wireless charging board 15, which can place electronic equipment on Charging is performed on the wireless charging pad 15. The surface perpendicular to the main plane of the casing 11 is referred to as the side surface of the casing 11, and is also divided into a large side surface and a small side surface according to the size of the area. In some embodiments, a data interface 131 is provided on a large side of the housing 11, and a mains socket 16 is provided on a small side.

In other embodiments, the wireless charging board 15, the data interface 131, and the mains socket 16 may adopt different distribution methods, such as setting the data interface 131 on the main plane, and setting the mains socket 16 on the large side. It should be noted that, in order to ensure that the electronic device can form a reliable electromagnetic induction with the wireless charging unit 14, the wireless charging board 15 is usually set on the main plane.

As mentioned above, the power supply circuit on the power supply circuit board 12 is a high-voltage-to-voltage circuit. The mains power connected to it is in the range of 100-240V, which belongs to strong power. The working voltage of the charging unit 14 and the collecting unit 13 is below 36V. Belongs to weak electricity. When the charging unit 14 and the line unit 13 work, they will be affected by the magnetic field generated by the power supply unit. The light will affect the power supply stability of the charging unit 14 and the line unit 13, and the heavy will cause the connection to the charging unit 14 or Damage to electronic equipment on the hub unit 13.

Therefore, a shield plate 17 is provided between the power supply circuit board 12 and the charging unit 14 and between the power supply circuit board 12 and the hub unit 13. Leave at intervals to reduce the impact of the power supply circuit board 12 on the operation of the charging unit 14 and the hub unit 13, thereby expanding the charging unit 14, the hub unit 13 and electronic devices for wireless charging, electronic devices for wired charging, and data interface expansion. Electronic equipment forms effective protection.

Shielding is the metal isolation between two spatial areas to control the induction and radiation of electric, magnetic and electromagnetic waves from one area to another. Specifically, the shielding body surrounds the interference sources of components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading outward; the shielding body surrounding the receiving circuit, equipment or system can effectively prevent them. Affected by external electromagnetic fields.

The above-mentioned shielding body is the shielding plate 17, and a conductor having high electric conductivity and magnetic permeability is often selected as the material of the shield. Because highly conductive materials will generate a larger induced current under the action of electromagnetic waves. These currents will weaken the penetration of electromagnetic waves in accordance with Lenz's law. The denser the metal mesh used, until the overall metal shell is used, the better the shielding effect, but the more materials it costs. Highly permeable materials can direct magnetic lines of force through these materials, reducing magnetic lines of force in the shielded area.

In this embodiment, the shielding plate 17 is an aluminum alloy plate. The aluminum alloy has good electrical conductivity, light weight and high strength, has a good shielding effect, and also has good chemical stability and structural mechanical characteristics.

The surface of the casing 11 is further provided with an indicator light 18, which is used to indicate the power-on state of the multifunctional expansion device 1, and different working states can be indicated by different colors. In some embodiments, when the multifunctional expansion device 1 is powered on, the indicator light 18 is green, and the color is green. When the charging unit 14 is working, the indicator light 18 is red, etc. Color display and flicker frequency can be customized.

Based on the foregoing various embodiments of the multifunctional expansion device, a specific embodiment of a simple and feasible multifunctional expansion device is described in detail here. As shown in FIG. 1, the multifunctional expansion device is a rectangular hexahedron structure, which includes opposite upper and lower surfaces, and four sides disposed between the upper and lower surfaces, and the side and the surface are vertically disposed. The upper and lower surfaces and the four sides together constitute the housing of the multifunctional expansion device. Among them, three connection interfaces 1311 and three expansion interfaces 1312 are clearly illustrated on one side of FIG. 1; the three connection interfaces 1311 are displayed in a row, and three expansion interfaces are displayed directly below the three connection interfaces 1311. 1312. In practical applications, the types of the three connection interfaces can be the same or different, and the types of the three expansion interfaces can be the same or different. For example, the three connection interfaces can all be TYPE-C interfaces; the three expansion interfaces can be a variety of USB interfaces, TYPE-C interfaces, display interfaces, card reader interfaces, network interfaces, and audio interfaces.

As shown in FIG. 5, the exploded structure of the multifunctional expansion device is illustrated. The charging unit 14 (illustrated by a dashed frame) may be a wireless charging unit. The power supply circuit board 12 is located directly below the charging unit 14 and is electrically connected to the charging unit. The wireless charging board 15 illustrated in FIG. 5 can be used to place an electronic device to be charged, thereby implementing wireless electromagnetic induction charging for the electronic device. The specific internal structure of the three connection interfaces 1311 and the three expansion interfaces 1312 embedded in the hub unit 13 is also clearly illustrated in FIG. 5. Specifically, both the connection interface 1311 and the expansion interface 1312 are electrically connected to the hub unit 13. In addition, FIG. 5 also shows a shielding plate 17 that can isolate the power supply circuit board 12 from the hub unit 13 and also isolate the power supply circuit board 12 from the charging unit 14 to effectively reduce the power supply circuit. The influence of the board 12 on the operation of the charging unit 14 and the hub unit 13.

It should be noted that the above is only a simple implementation of a multifunctional expansion device. In practical applications, Figures 1 to 5 should not be considered as a limitation, and the structure of the multifunctional expansion device can be flexibly adjusted according to requirements, such as The multifunctional expansion device may not be limited to a rectangular hexahedron structure, and the types, numbers, and positions of the connection interfaces 1311 and the expansion interfaces 1312 may also be flexibly set.

The above-mentioned multifunctional expansion device provided in this embodiment can wirelessly charge an electronic device through a wireless charging unit, and can expand the data interface of the electronic device through multiple data interfaces, so that the electronic device can form data transmission with multiple devices. High integration and small size make it easy to carry and store.

As shown in FIG. 6, this embodiment further provides an electronic system including an electronic device 2 and a multifunctional expansion device 1 connected to the electronic device 2; the multifunctional expansion device 1 can provide a charging function and an interface for the electronic device 2 extensions. Specifically, the multifunctional expansion device 1 is connected to the electronic device 2 through its data interface, so as to transmit data to the electronic device and / or charge the electronic device.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system described above can refer to the corresponding process in the foregoing embodiment, and will not be repeated here. In all examples shown and described herein, any specific value should be construed as exemplary only, and not as a limitation, so other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, so once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

The above-mentioned embodiments only express several implementation manners of the present application, and the descriptions thereof are more specific and detailed, but cannot be understood as limiting the scope of the present application. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Industrial applicability:

By applying the technical solution of the present application, the multifunctional expansion device can charge the electronic device through the charging unit, and the data interface of the electronic device can be extended through multiple data interfaces, so that the electronic device can form data transmission with multiple devices and functions. High integration.

Claims

The multifunctional expansion device is characterized in that it includes a housing, a power supply circuit board, and a hub unit, and a surface of the housing is provided with a data interface and a charging unit;

The power supply circuit board is electrically connected to the charging unit, and the data interface is electrically connected to the hub unit;

The data interface includes a connection interface and an expansion interface, and the connection interface is configured to be connected to an electronic device.
The multifunctional expansion device according to claim 1, wherein the connection interface comprises a TYPE-C interface.
The multifunctional expansion device according to claim 1, wherein the expansion interface comprises one or more of a USB interface, a TYPE-C interface, a display interface, a card reader interface, a network interface, and an audio interface.
The multifunctional expansion device according to claim 3, wherein the display interface comprises one or more of an HDMI interface, a DP interface, a VGA interface, and a DVI interface; and the card reader interface comprises an SD card interface One or more of Mini SD card interface and Memory Stick card interface; the network interface includes an Ethernet interface; the audio interface includes one of a fiber interface, a coaxial interface, an AUX interface, a stereo interface, and an AV interface Or more.
The multifunctional expansion device according to claim 1, wherein a mains socket is provided on the surface of the housing, and the mains socket is electrically connected to the power supply circuit board.
The multifunctional expansion device according to claim 4, wherein the mains socket is an 8-bit tail socket.
The multi-functional expansion device according to claim 1, wherein the multi-functional expansion device further comprises a shield plate, which shields the power supply circuit board and the hub unit.
The multifunctional expansion device according to claim 1, wherein the shielding plate is an aluminum alloy plate.
The multifunctional expansion device according to claim 1, wherein a high voltage to low voltage circuit is provided on the power supply circuit board.
The multifunctional expansion device according to claim 9, wherein the high-voltage to low-voltage circuit is configured to convert a preset power frequency AC voltage to a voltage set by a PD protocol.
The multifunctional expansion device according to claim 1, wherein the charging unit is a wireless charging unit, and a charging plate of the wireless charging unit covers a surface of the casing.
The multifunctional expansion device according to claim 11, wherein the wireless charging unit is configured to be charged by electromagnetic induction.
The multifunctional expansion device according to claim 12, wherein the wireless charging unit comprises a plurality of coil arrays.
The multifunctional expansion device according to claim 1, wherein the charging unit is a wired charging unit, and a charging socket of the wired charging unit is provided on a surface of the casing.
The multifunctional expansion device according to claim 1, wherein the charging unit is disposed on a main plane of the casing, and the data interface is disposed on a side of the casing.
The multifunctional expansion device according to claim 1, wherein a power indicator light is provided on the surface of the casing.
The multifunctional expansion device according to claim 1, wherein the data interface is configured to transmit data to and / or charge the external device.
The electronic system is characterized by comprising an electronic device and the multifunctional expansion device according to any one of claims 1 to 17 connected to the electronic device.