Separated interface board power supply module and all-in-one machine equipment

Abstract

The embodiment of the utility model relates to a separated interface board power supply module and all-in-one machine equipment, the separated interface board power supply module comprises a target mainboard, a high-voltage transmission connecting line and a target interface board, the target interface board comprises a first voltage conversion module and a target interface, and the target interface board is used for externally connecting different mode interfaces; the output end of the target mainboard is connected with one end of the high-voltage transmission connecting line; the other end of the high-voltage transmission connecting line is connected with the input end of the first voltage conversion module in the target interface board; the output end of the first voltage conversion module is connected with the target interface. The first voltage conversion module is added to perform voltage conversion on the received high voltage, so that loss and voltage difference generated in the transmission process are reduced, and the power demand of the target interface board is improved. Therefore, the technical effects of reducing the voltage loss and improving the power demand of the target interface board can be achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of all-in-one equipment, and in particular to a separate interface board power supply module and an all-in-one equipment. Background Art

[0002] Multimedia interactive all-in-one machine and touch all-in-one machine integrate whiteboard writing, wireless screen projection and audio and video, and support Android and Windows dual systems; the hardware components mainly include display screen, power board, Android motherboard, OPS computer, touch module, front button, front interface, speaker, wifi module, and microphone module.

[0003] The existing front panel of the whole machine requires to be installed externally and forward, so the main board and the front panel are designed separately, and the communication and power supply are connected by wires. With the iteration of technology, the specifications of the front interface must also be transformed to higher specifications, such as USB2.0 to 3.0, and HDMI to TYPE-C specifications. The existing front panel uses 5V power, but the direct power supply current of 5V is large, and there is a large line loss and voltage difference for the circuit. The full-load operating voltage is lower than 4.75V, which cannot meet the USB voltage power supply standard. Utility Model Content

[0004] In view of this, in order to solve the technical problem of increased line loss caused by the different interface types between the main board and the interface board, an embodiment of the present application provides a separate interface board power supply module and an all-in-one device.

[0005] In a first aspect, an embodiment of the present application provides a separate interface board power supply module, which is applied to an all-in-one device, including:

[0006] A target mainboard, a high-voltage transmission connection line and a target interface board, wherein the target interface board includes a first voltage conversion module and a target interface, and the target interface board is used to connect to interfaces of different modes;

[0007] The output end of the target mainboard is connected to one end of the high-voltage transmission connection line;

[0008] The other end of the high voltage transmission connection line is connected to the input end of the first voltage conversion module in the target interface board;

[0009] The output end of the first voltage conversion module is connected to the target interface; the target mainboard is used to receive and send data information of the all-in-one device, and transmit the data information of the high-level signal to the target interface board through the high-voltage transmission connection line, and use the first voltage conversion module to convert the high-voltage signal into the working voltage of the target interface, and power the external interface device through the target interface.

[0010] In a possible implementation manner, the target mainboard includes a second voltage conversion module;

[0011] The second voltage conversion module is connected to one end of the high-voltage transmission connection line as the output end of the target mainboard, and the second voltage conversion module has the same structure as the first voltage conversion module;

[0012] The output end of the second voltage conversion module is connected to the input end of the first voltage conversion module through the high-voltage transmission connection line, and the second voltage conversion module is used to convert the low-level signal input to the target mainboard into a high-level signal.

[0013] In a possible implementation, the first voltage conversion module includes:

[0014] An input filter unit, a voltage conversion unit, a voltage divider unit and an output filter unit;

[0015] The input end of the input filter unit is connected to the other end of the high-voltage transmission connection line as the input end of the first voltage conversion module, the first output end is connected to the first input end of the voltage conversion unit, and the second output end is connected to the second input end of the voltage conversion unit. The input filter unit is used to filter the input electrical signal;

[0016] The first output terminal of the voltage conversion unit is connected to the first input terminal of the voltage dividing unit, and the second output terminal of the voltage conversion unit is connected to the second input terminal of the voltage dividing unit;

[0017] The output end of the voltage dividing unit is connected to the input end of the output filtering unit;

[0018] The output end of the output filter unit is connected to the target interface as the output end of the first voltage conversion module.

[0019] In a possible implementation, the input filtering unit includes:

[0020] A first capacitor, a second capacitor, a first resistor, a second resistor and a third capacitor;

[0021] One end of the first capacitor is connected to the other end of the high-voltage transmission connection line as the input end of the input filter unit, and one end of the second capacitor, one end of the first resistor and the first input end of the voltage conversion unit are connected to the other end of the high-voltage transmission connection line, and the other end of the first capacitor and the other end of the second capacitor are connected to the first ground end;

[0022] The other end of the first resistor is respectively connected to one end of the second resistor, one end of the third capacitor and the second input end of the voltage conversion unit;

[0023] The other end of the second resistor and the other end of the third capacitor are connected to a second ground terminal.

[0024] In a possible implementation, the voltage conversion unit includes:

[0025] A voltage conversion chip and a fourth capacitor;

[0026] The first pin of the voltage conversion chip is connected to the third ground terminal, the second pin is connected to one end of the fourth capacitor and the first input end of the voltage divider unit as the first output end of the voltage conversion unit, the third pin is connected to the first output end of the input filtering unit as the first input end of the voltage conversion unit, the fourth pin is connected to the second input end of the voltage divider unit as the second output end of the voltage conversion unit, the fifth pin is connected to the second output end of the input filtering unit as the second input end of the voltage conversion unit, and the sixth pin is connected to the other end of the fourth capacitor. The voltage conversion chip is used to convert a high-level signal into a low-level signal.

[0027] In a possible implementation, the voltage dividing unit includes:

[0028] A first inductor, a third resistor, a fourth resistor and a fifth capacitor;

[0029] One end of the first inductor is connected to the first output end of the voltage conversion unit as the first input end of the voltage divider unit, and the other end is connected to one end of the third resistor, one end of the fifth capacitor and the input end of the output filter unit as the output end of the voltage divider unit;

[0030] The other end of the third resistor is connected as the second input end of the voltage dividing unit to the other end of the fifth capacitor, one end of the fourth resistor and the second output end of the voltage conversion unit respectively;

[0031] The other end of the fourth resistor is connected to a fourth ground terminal.

[0032] In a possible implementation, the output filtering unit includes:

[0033] a sixth capacitor, a seventh capacitor, an eighth capacitor and a ninth capacitor;

[0034] One end of the sixth capacitor is connected to the sixth ground terminal in parallel with one end of the seventh capacitor, one end of the eighth capacitor and one end of the ninth capacitor respectively;

[0035] The other end of the sixth capacitor is connected in parallel with the other end of the seventh capacitor, the other end of the eighth capacitor and the other end of the ninth capacitor, and then connected to the output end of the voltage divider unit and the target interface.

[0036] In a possible implementation, the target interface includes:

[0037] General interface and conversion interface;

[0038] The universal interface and the conversion interface are connected to the output end of the first voltage conversion module. The universal interface is used to provide a universal input and output interface to the outside, and the conversion interface is used to provide a data conversion interface to the outside.

[0039] In a possible implementation, it is characterized in that

[0040] The universal interface includes a plurality of serial bus interfaces, and the conversion interface includes a lightning interface and a symmetric interface;

[0041] One end of each of the serial bus interfaces is connected to the lightning interface, the symmetrical interface and the output end of the first voltage conversion module respectively, and the other end of each of the serial bus interfaces is correspondingly connected to universal data lines of different specifications;

[0042] The other end of the lightning interface is connected to an external lightning data cable;

[0043] The other end of the symmetrical interface is connected to an external symmetrical data line.

[0044] In the second aspect, an embodiment of the present application provides an all-in-one device, which is applied to any separate interface board power supply module described in the first aspect, including a display screen, a power board, an Android mainboard, an OPS computer, a touch module, a front button, a front interface board, a speaker, a wifi module, and a microphone module. The Android mainboard is designed to be separated from the front interface board, and communication and power supply are connected by wires.

[0045] The separated interface board power supply module provided in the embodiment of the present application is provided with a target mainboard, a high-voltage transmission connection line and a target interface board, wherein the target interface board includes a first voltage conversion module and a target interface, and the target interface board is used to connect different mode interfaces externally; the output end of the target mainboard is connected to one end of the high-voltage transmission connection line; the other end of the high-voltage transmission connection line is connected to the input end of the first voltage conversion module in the target interface board; the output end of the first voltage conversion module is connected to the target interface, and the target mainboard is used to receive and send data information of the integrated device, and transmit the data information of the high-level signal to the target interface board through the high-voltage transmission connection line, and the high-voltage signal is converted into the working voltage of the target interface by using the first voltage conversion module, and the external interface device is powered by the target interface. By adding the first voltage conversion module, a high-level signal is drawn from the target mainboard to the target interface board, and the target interface board is reduced by voltage conversion, and the high-level signal that cannot work is converted into the working voltage of the device and then transmitted to the subsequent interface, thereby reducing the loss and pressure difference generated during the transmission process, and improving the power demand of the target interface board. By this scheme, it is possible to achieve the technical effect of reducing voltage loss and improving the power demand of the target interface board. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0049] Figure 1 A schematic diagram of the structure of a separate interface board power supply module provided in the prior art;

[0050] Figure 2 A schematic diagram of the structure of a separate interface board power supply module provided in an embodiment of the present application;

[0051] Figure 3 A schematic diagram of the structure of a voltage conversion module for separating an interface board power supply module provided in an embodiment of the present application;

[0052] Figure 4 A schematic diagram of the structure of another voltage conversion module for separating the interface board power supply module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] The terms "including" and "having" in the embodiments of the present application are used to express an open-ended inclusive meaning, and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.; the terms "first" and "second" etc. are used only as labels and are not intended to limit the quantity of their objects. In addition, the different elements and regions in the drawings are only schematically shown, so the present application is not limited to the sizes or distances shown in the drawings.

[0055] Figure 1 The schematic diagram of the structure of a separate interface board power supply module provided in the prior art. Figure 1 The diagram provided shows that an Android mainboard and a front interface board are provided on an interactive all-in-one machine and a touch all-in-one machine based on the Android system. The installation of the front interface board of the existing whole machine form requires that it be externally facing forward, so the mainboard and the front interface board are designed separately, and the communication and power supply are connected through the front connection wire. By selecting a front connection line to connect the signal interface in the Android mainboard, generally an HDMI interface or a universal USB interface, the 5V voltage output on the Android mainboard is transmitted to the front interface board through the front connection line, and connected to various types of internal interfaces to meet the user's needs for USB interface and TYPE-C interface. The USB1 interface, USB2 interface and USB3 interface mentioned here represent USB1.0 interface, USB2.0 interface and USB3.0 interface respectively.

[0056] However, when the interface of the Android motherboard changes from HDMI to TYPE-C specifications, the existing front interface board uses 5V power. The 5V direct power supply current is large, and there is a large line loss and voltage difference. When the full-load working voltage of the all-in-one machine is lower than 4.75V, it cannot meet the voltage power supply standard of the USB interface corresponding to the front interface board. This will cause some loss to the all-in-one device and affect the user's practicality.

[0057] In order to solve the power loss caused by the instability of the required voltage inside the front interface board in the prior art, the present application provides a separate interface board power supply module. By adding a first voltage conversion module inside the front interface board, the high-level signal received from the target mainboard is converted into an interface working voltage, thereby reducing the line loss and voltage drop in the module to meet the standards of the front interface board.

[0058] To facilitate understanding of the embodiments of the present application, further explanation will be given below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present application.

[0059] Figure 2 A schematic diagram of a structure of a separate interface board power supply module provided in an embodiment of the present application. Figure 2 The diagram provided shows that the structure of the power supply module of the separated interface board specifically includes:

[0060] The target main board 10, the high voltage transmission connection line 20 and the target interface board 30, the target interface board 30 includes a voltage conversion module 31 and a target interface 32, and the target interface board 30 is used for externally connecting different mode interfaces.

[0061] The output end of the target mainboard 10 is connected to one end of the high-voltage transmission connection line 20 .

[0062] The other end of the high voltage transmission connection line 20 is connected to the input end of the first voltage conversion module 31 in the target interface board 30 .

[0063] The output end of the first voltage conversion module 31 is connected to the target interface 32. The target mainboard 10 is used to receive and send data information of the all-in-one device, and transmit the data information of the high-level signal to the target interface board 30 through the high-voltage transmission connection line 20. The first voltage conversion module 31 is used to convert the high-voltage signal into the working voltage of the target interface 32, and power is supplied to the external interface device through the target interface 32.

[0064] The target motherboard mentioned here can be understood as the power supply motherboard in the all-in-one device. The data information mentioned here can be understood as the signal data used for processing by the all-in-one device.

[0065] The first voltage conversion module mentioned here is used to convert the voltage signal in the range of 8V-28V into a fixed output voltage signal of 5V. The target interface board mentioned here can be understood as the front interface board in the all-in-one device.

[0066] according to Figure 2The diagram provided shows that the high-voltage transmission connection line is used to transmit the 12V high-voltage signal output by the target mainboard, as well as the 2A current signal. In this way, the 12V electrical signal obtained from the target mainboard and the electrical signal maintaining the 2A high current power supply are transmitted to the connected front interface board, and the received 12V high voltage and 2A high current are converted into 5V working voltage through the internal first voltage conversion module. The current is different according to the internal requirements of the target interface, and power supply signals of different current sizes are selected to ensure that the target interface can provide the rated electrical signal to the outside, reducing the impact of power loss caused by low input voltage.

[0067] The separation interface board power supply module provided by the embodiment of the present application is provided with a target mainboard, a high-voltage transmission connection line and a target interface board, the target interface board includes a first voltage conversion module and a target interface, and the target interface board is used to connect different mode interfaces externally; the output end of the target mainboard is connected to one end of the high-voltage transmission connection line; the other end of the high-voltage transmission connection line is connected to the input end of the first voltage conversion module in the target interface board; the output end of the first voltage conversion module is connected to the target interface, the target mainboard is used to receive and send data information of the all-in-one device, and transmit the data information of the high-level signal to the target interface board through the high-voltage transmission connection line, and the high-voltage signal is converted into the working voltage of the target interface by the first voltage conversion module, and the external interface device is powered by the target interface. By adding a voltage conversion module, a high-level signal is drawn from the target mainboard to the target interface board, and the target interface board is reduced by voltage conversion, and the high-level signal that cannot work is converted into the working voltage of the device and then transmitted to the interface connected later, reducing the loss and pressure difference generated during the transmission process, and improving the power demand of the target interface board. By this scheme, it is possible to achieve the technical effect of reducing voltage loss and improving the power demand of the target interface board.

[0068] Figure 3 A schematic diagram of the structure of a voltage conversion module for separating an interface board power supply module provided in an embodiment of the present application. Figure 3 This is introduced based on the previous embodiment. Figure 3 According to the diagram provided, the structure of the first voltage conversion module 31 in the separated interface board power supply module specifically includes:

[0069] An input filtering unit 311 , a voltage conversion unit 312 , a voltage dividing unit 313 and an output filtering unit 314 .

[0070] The input end of the input filter unit 311 is connected to the other end of the high-voltage transmission connection line 20 as the input end of the voltage conversion module 31, the first output end is connected to the first input end of the voltage conversion unit 312, and the second output end is connected to the second input end of the voltage conversion unit 312. The input filter unit 311 is used to filter the input electrical signal.

[0071] A first output terminal of the voltage conversion unit 312 is connected to a first input terminal of the voltage dividing unit 313 , and a second output terminal of the voltage conversion unit 312 is connected to a second input terminal of the voltage dividing unit 313 .

[0072] The output end of the voltage dividing unit 313 is connected to the input end of the output filtering unit 314 .

[0073] The output terminal of the output filter unit 314 is connected to the target interface 32 as the output terminal of the voltage conversion module 31 .

[0074] The target mainboard 10 includes a second voltage conversion module 101 .

[0075] The second voltage conversion module 101 is connected to one end of the high-voltage transmission connection line 20 as an output end of the target mainboard 10 , and the second voltage conversion module 101 has the same structure as the first voltage conversion module 31 .

[0076] The output end of the second voltage conversion module 101 is connected to the input end of the first voltage conversion module 31 through the high-voltage transmission connection line 20. The second voltage conversion module 101 is used to convert the low-level signal input to the target motherboard 10 into a high-level signal.

[0077] according to Figure 3 According to the provided diagram, the 5V low voltage signal at the interface end in the target mainboard 10 is converted into a 12V high level voltage signal through the second voltage conversion module 101, and the 12V high level voltage signal is transmitted to the high voltage transmission connection line 20, and the high voltage transmission connection line 20 transmits the 12V high voltage signal to the input filter unit 311, and the 12V electrical signal is transmitted to the voltage conversion unit 312 for voltage conversion to obtain a 5V electrical signal through the filtering processing of the input filter unit 311, and the 5V output electrical signal is processed again in the output filter unit 314 after being processed by the voltage divider unit 313, so as to obtain a properly stable 5V output electrical signal, and provide a stable electrical signal for the target interface 32 connected to the subsequent stage, so as to reduce the problem of electrical loss caused by different processes of interface conversion.

[0078] according to Figure 3 The diagram provided shows that the target interface 32 in the separated interface board power supply module includes:

[0079] General interface 321 and conversion interface 322 .

[0080] The general interface 321 and the conversion interface 322 are connected to the output end of the first voltage conversion module 31 . The general interface 321 is used to provide a general input and output interface to the outside, and the conversion interface unit 322 is used to provide a data conversion interface to the outside.

[0081] according to Figure 3The provided diagram shows that a 12V high-level voltage signal is obtained by converting the 5V low-voltage signal at the interface end in the target mainboard 10, and the 12V high-level voltage signal is transmitted to the high-voltage transmission connecting line 20. After the high-voltage transmission connecting line 20 transmits the 12V electrical signal to the first voltage conversion module, the 12V electrical signal is converted into a device operating voltage of 5V, and the converted electrical signal is transmitted to the universal interface 321 and the conversion interface 322 respectively. Since the universal interface 321 and the conversion interface 322 transmit data due to different currents required for different interface types, the electrical signal is transmitted to the outside after being converted into the current required for the interface to work, and the corresponding electrical signal is transmitted to the outside after the current is converted into the current required for the conversion interface 322 to work, thereby avoiding the problem of power loss caused by different interface types and different operating currents between the target mainboard 10 and the front interface board 30 and the external interface.

[0082] In one possible example scenario, according to Figure 3 According to the provided diagram, the 5V low voltage signal at the interface end in the target mainboard 10 is converted into a 12V high level voltage signal, and the 12V high level voltage signal is transmitted to the high voltage transmission connection line 20, and the 12V high voltage signal is transmitted to the input filter unit 311 through the high voltage transmission connection line 20, and the 12V electrical signal is transmitted to the voltage conversion unit 312 for voltage conversion to obtain a 5V electrical signal through the filtering process of the input filter unit 311, and the 5V output electrical signal is filtered again in the output filter unit 314 after being processed by the voltage divider unit 313 to obtain a properly stable 5V output electrical signal, and the converted electrical signals are transmitted to the universal interface 321 and the conversion interface 322 respectively. Since the universal interface 321 and the conversion interface 322 transmit data due to different interface types requiring different working currents, the electrical signal is transmitted to the outside after being converted into the current required for the interface to work, and the corresponding electrical signal is transmitted to the outside after the current is converted into the current required for the conversion interface 322 to work.

[0083] A separate interface board power supply module provided in an embodiment of the present application converts a low-level signal at the interface end into a high-level signal through a second voltage conversion module in the target mainboard, and transmits the signal to an input filter unit through a high-voltage transmission connection line. After the input filter unit filters the received high-voltage signal, the voltage conversion unit performs voltage conversion to obtain a device operating voltage. After being processed by a voltage divider unit and filtered by an output filter unit, different electrical signals are provided for a universal interface and a conversion interface, thereby avoiding power loss problems caused by different interface types and operating currents of the target mainboard, the front interface board and the external interface.

[0084] Figure 4 A schematic diagram of the structure of another voltage conversion module for separating the interface board power supply module provided in an embodiment of the present application. Figure 4The invention is introduced on the basis of the first embodiment. Figure 4 According to the diagram provided, the structure of the first voltage conversion module in the separated interface board power supply module specifically includes:

[0085] An input filtering unit 311 , a voltage conversion unit 312 , a voltage dividing unit 313 and an output filtering unit 314 .

[0086] according to Figure 4 According to the diagram provided, the input filter unit 311 in the first voltage conversion module 31 includes:

[0087] A first capacitor C1, a second capacitor C2, a first resistor R1, a second resistor R2 and a third capacitor C3.

[0088] One end of the first capacitor C1 serves as the input end of the input filter unit 311 and is respectively connected to the other end of the high-voltage transmission connection line 20 with one end of the second capacitor C2, one end of the first resistor R1 and the first input end of the voltage conversion unit 312, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are connected to the first ground end.

[0089] The other end of the first resistor R1 is connected to one end of the second resistor R2 , one end of the third capacitor C3 , and the second input end of the voltage conversion unit 312 , respectively.

[0090] The other end of the second resistor R2 and the other end of the third capacitor C3 are connected to the second ground terminal.

[0091] according to Figure 4 According to the diagram provided, a 5V low voltage signal at the interface end in the target motherboard 10 is converted into a 12V high level voltage signal, and the 12V high level voltage signal is transmitted to the high voltage transmission connection line 20, and the 12V electrical signal is transmitted to the input filter unit composed of the first capacitor C1 and the second capacitor C2 through the high voltage transmission connection line to filter out clutter and obtain a stable output voltage, and then an enabling start voltage is provided to the voltage conversion unit 312 through the pull-up effect of the first resistor R1, thereby achieving high level operation, and then the input electrical signal is filtered through the RC circuit composed of the second resistor R2 and the third capacitor C3 to obtain a stable 12V input voltage.

[0092] according to Figure 4 According to the diagram provided, the voltage conversion unit 312 in the first voltage conversion module 31 includes:

[0093] The voltage conversion chip UD1 and the fourth capacitor C4.

[0094] The first pin of the voltage conversion chip UD1 is connected to the third ground terminal, the second pin is connected to one end of the fourth capacitor C4 and the first input end of the voltage divider unit 313 as the first output end of the voltage conversion unit 312, the third pin is connected to the first output end of the input filter unit 311 as the first input end of the voltage conversion unit 312, the fourth pin is connected to the second input end of the voltage divider unit 313 as the second output end of the voltage conversion unit 312, the fifth pin is connected to the second output end of the input filter unit 311 as the second input end of the voltage conversion unit 312, and the sixth pin is connected to the other end of the fourth capacitor C4. The voltage conversion chip UD1 is used to convert a high-level signal into a low-level signal.

[0095] according to Figure 4 According to the diagram provided, the functions of the various pins in the voltage conversion chip UD1 are as follows:

[0096] BOOT pin: The power input for the high-side N-type transistor NFET gate drive circuit. Connect a 0.1μF capacitor between the BOOT pin and the SW pin.

[0097] EN pin: This pin is the enable pin. Floating the EN pin will enable it.

[0098] FB Pin: Feedback input of the converter. Connected to the output voltage through a feedback resistor divider.

[0099] GND Pin: Ground pin. Source terminal of the low-side power NFET and ground terminal of the controller circuit. Connect the sensitive VFB pin to this GND at a single point.

[0100] SW Pin: Switching node connection between the high-side NFET and the low-side NFET.

[0101] VIN Pin: Input voltage supply pin. Drain terminal of the high side power NFET.

[0102] according to Figure 4 The 12V high level signal is filtered by the input filter unit, and then the 12V electrical signal is input to the voltage conversion chip UD1 for voltage conversion processing, and coupled through the fourth capacitor C4 to provide an input signal for the drive circuit. After voltage conversion, a 5V electrical signal is output, and the 5V electrical signal is output to the line connected to the next stage to provide a corresponding electrical signal for the target interface.

[0103] according to Figure 4 According to the diagram provided, the voltage dividing unit 313 in the first voltage conversion module includes:

[0104] a first inductor LD1, a third resistor R3, a fourth resistor R4 and a fifth capacitor C5.

[0105] One end of the first inductor LD1 is connected to the first output end of the voltage conversion unit 312 as the first input end of the voltage divider unit 313, and the other end is connected to one end of the third resistor R3, one end of the fifth capacitor C5 and the input end of the output filter unit 314 as the output end of the voltage divider unit 313.

[0106] The other end of the third resistor R3 is connected to the other end of the fifth capacitor C5 , one end of the fourth resistor R4 , and the second output end of the voltage conversion unit 312 as the second input end of the voltage dividing unit 313 .

[0107] The other end of the fourth resistor R4 is connected to the fourth ground end.

[0108] according to Figure 4 The diagram provided shows that the 12V voltage is converted into a 5V electrical signal by the voltage conversion unit and then passes through the energy storage inductor of the first inductor LD1 to realize energy storage when turned on and release energy when turned off. The value of the output voltage is set by adjusting the feedback voltage divider resistors of the third resistor R3 and the fourth resistor R4.

[0109] according to Figure 4 According to the diagram provided, the output filter unit 314 in the first voltage conversion module includes:

[0110] a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a ninth capacitor C9.

[0111] One end of the sixth capacitor C6 is connected in parallel with one end of the seventh capacitor C7 , one end of the eighth capacitor C8 , and one end of the ninth capacitor C9 and then connected to the sixth ground terminal.

[0112] The other end of the sixth capacitor C6 is connected in parallel with the other end of the seventh capacitor C7 , the other end of the eighth capacitor C8 and the other end of the ninth capacitor C9 , and then connected to the output end of the voltage dividing unit 313 and the target interface 32 .

[0113] according to Figure 4 According to the provided diagram, the universal interface 321 in the first voltage conversion module 31 includes multiple serial bus USB interfaces, and the conversion interface 322 includes a Lightning interface and a symmetrical TYPE-C interface.

[0114] One end of each serial bus USB interface is respectively connected to the Lightning interface, the symmetrical TYPE-C interface and the output end of the first voltage conversion module 31, and the other end of each serial bus USB interface is correspondingly connected to a universal data cable of different specifications.

[0115] The other end of the Lightning interface is connected to the external Lightning data cable.

[0116] The other end of the symmetrical TYPE-C interface is connected to an external symmetrical data line.

[0117] according to Figure 4 According to the provided diagram, an electrical signal of a set output value is obtained after being processed by a voltage divider unit, and the output signal is filtered again by a filtering structure composed of a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a ninth capacitor C9 to obtain a stable output voltage of 5V, providing a specified current signal for the USB interface, Lightning interface and TYPE-C interface connected to the subsequent stage. Since different interface types require signals of different current sizes, electrical signals of different current sizes are output to the universal interface 321 and the conversion interface 322 through the output filtering unit 314, thereby achieving the purpose of stable output when the interface type of the target mainboard 10 is different from the interface type of the front interface board 30, thereby reducing power loss.

[0118] The embodiment of the present application provides an all-in-one device, which is applied to Figure 2-4 The separated interface board power supply module described in any one of the above, the all-in-one device includes a display screen, a power board, an Android mainboard, an OPS computer, a touch module, a front button, a front interface board, a speaker, a wifi module, and a microphone module. The Android mainboard is designed to be separated from the front interface board, and the communication and power supply are connected by wires. Since the external structure of the all-in-one device is not the key structure of this application, it will not be described in detail here through the drawings.

[0119] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A separate interface board power supply module, applied to an all-in-one device, characterized in that: include: A target mainboard, a high-voltage transmission connection line and a target interface board, wherein the target interface board includes a first voltage conversion module and a target interface, and the target interface board is used to connect to interfaces of different modes; The output end of the target mainboard is connected to one end of the high-voltage transmission connection line; The other end of the high voltage transmission connection line is connected to the input end of the first voltage conversion module in the target interface board; The output end of the first voltage conversion module is connected to the target interface; the target mainboard is used to receive and send data information of the all-in-one device, and transmit the data information of the high-level signal to the target interface board through the high-voltage transmission connection line, and use the first voltage conversion module to convert the high-voltage signal into the working voltage of the target interface, and power the external interface device through the target interface.

2. The module according to claim 1, characterized in that: The target mainboard includes a second voltage conversion module; The second voltage conversion module is connected to one end of the high-voltage transmission connection line as the output end of the target mainboard, and the second voltage conversion module has the same structure as the first voltage conversion module; The output end of the second voltage conversion module is connected to the input end of the first voltage conversion module through the high-voltage transmission connection line, and the second voltage conversion module is used to convert the low-level signal input to the target mainboard into a high-level signal.

3. The module according to claim 1, characterized in that: The first voltage conversion module comprises: An input filter unit, a voltage conversion unit, a voltage divider unit and an output filter unit; The input end of the input filter unit is connected to the other end of the high-voltage transmission connection line as the input end of the first voltage conversion module, the first output end is connected to the first input end of the voltage conversion unit, and the second output end is connected to the second input end of the voltage conversion unit. The input filter unit is used to filter the input electrical signal; The first output terminal of the voltage conversion unit is connected to the first input terminal of the voltage dividing unit, and the second output terminal of the voltage conversion unit is connected to the second input terminal of the voltage dividing unit; The output end of the voltage dividing unit is connected to the input end of the output filtering unit; The output end of the output filter unit is connected to the target interface as the output end of the first voltage conversion module.

4. The module according to claim 3, characterized in that: The input filtering unit comprises: A first capacitor, a second capacitor, a first resistor, a second resistor and a third capacitor; One end of the first capacitor is connected to the other end of the high-voltage transmission connection line as the input end of the input filter unit, and one end of the second capacitor, one end of the first resistor and the first input end of the voltage conversion unit are connected to the other end of the high-voltage transmission connection line, and the other end of the first capacitor and the other end of the second capacitor are connected to the first ground end; The other end of the first resistor is respectively connected to one end of the second resistor, one end of the third capacitor and the second input end of the voltage conversion unit; The other end of the second resistor and the other end of the third capacitor are connected to a second ground terminal.

5. The module according to claim 3, characterized in that: The voltage conversion unit comprises: A voltage conversion chip and a fourth capacitor; The first pin of the voltage conversion chip is connected to the third ground terminal, the second pin is connected to one end of the fourth capacitor and the first input end of the voltage divider unit as the first output end of the voltage conversion unit, the third pin is connected to the first output end of the input filtering unit as the first input end of the voltage conversion unit, the fourth pin is connected to the second input end of the voltage divider unit as the second output end of the voltage conversion unit, the fifth pin is connected to the second output end of the input filtering unit as the second input end of the voltage conversion unit, and the sixth pin is connected to the other end of the fourth capacitor. The voltage conversion chip is used to convert a high-level signal into a low-level signal.

6. The module according to claim 3, characterized in that: The voltage dividing unit comprises: A first inductor, a third resistor, a fourth resistor and a fifth capacitor; One end of the first inductor is connected to the first output end of the voltage conversion unit as the first input end of the voltage divider unit, and the other end is connected to one end of the third resistor, one end of the fifth capacitor and the input end of the output filter unit as the output end of the voltage divider unit; The other end of the third resistor is connected as the second input end of the voltage dividing unit to the other end of the fifth capacitor, one end of the fourth resistor and the second output end of the voltage conversion unit respectively; The other end of the fourth resistor is connected to a fourth ground terminal.

7. The module according to claim 3, characterized in that: The output filtering unit comprises: a sixth capacitor, a seventh capacitor, an eighth capacitor and a ninth capacitor; One end of the sixth capacitor is connected to the sixth ground terminal in parallel with one end of the seventh capacitor, one end of the eighth capacitor and one end of the ninth capacitor respectively; The other end of the sixth capacitor is connected in parallel with the other end of the seventh capacitor, the other end of the eighth capacitor and the other end of the ninth capacitor, and then connected to the output end of the voltage divider unit and the target interface.

8. The module according to claim 1, characterized in that: The target interface includes: General interface and conversion interface; The universal interface and the conversion interface are connected to the output end of the first voltage conversion module. The universal interface is used to provide a universal input and output interface to the outside, and the conversion interface is used to provide a data conversion interface to the outside.

9. The module according to claim 8, characterized in that: The universal interface includes a plurality of serial bus interfaces, and the conversion interface includes a lightning interface and a symmetric interface; One end of each of the serial bus interfaces is connected to the lightning interface, the symmetrical interface and the output end of the first voltage conversion module respectively, and the other end of each of the serial bus interfaces is correspondingly connected to universal data lines of different specifications; The other end of the lightning interface is connected to an external lightning data cable; The other end of the symmetrical interface is connected to an external symmetrical data line.

10. An all-in-one device, applied to the separate interface board power supply module as claimed in any one of claims 1 to 9, characterized in that: It includes a display screen, a power board, an Android mainboard, an OPS computer, a touch module, a front button, a front interface board, a speaker, a wifi module, and a microphone module. The Android mainboard and the front interface board are designed separately and are connected for communication and power supply through wires.

Images