Power supply system and LED all-in-one machine

Abstract

The utility model is suitable for the technical field of LED all-in-one machines, and provides a power supply system and an LED all-in-one machine, the power supply system comprises a plurality of first LED box bodies and a plurality of second LED box bodies, the first LED box bodies and the second LED box bodies are adjacently spliced, a power module and a first HUB board are arranged in each first LED box body, a second HUB board is arranged in each second LED box body, and the first LED box bodies and the second LED box bodies are adjacently spliced. The power supply module is electrically connected with the first HUB board and the second HUB board. The power supply module is used for providing a first power supply voltage for the first HUB board and is also used for providing a second power supply voltage for the second HUB board. According to the power supply system provided by the embodiment of the invention, the single power supply module is used for supplying power to the first HUB board and the second HUB board at the same time, so that the two HUB boards share one power supply module. By means of the design, the load of the power module is increased, it can be ensured that the power module works in a saturated state, and therefore the overall use efficiency is greatly improved.

Description

Technical Field

[0001] This application belongs to the field of LED all-in-one machine technology, and particularly relates to a power supply system and an LED all-in-one machine. Background Technology

[0002] With LED (light-emitting diode) technology demonstrating significant advantages in the display field, such as small pitch, high contrast, and wide color gamut, LED all-in-one machines are becoming increasingly popular in conference rooms, lecture halls, cinemas, and other application environments. Currently, LED all-in-one machines are powered by a power module installed in each LED cabinet of the LED display. However, because each LED cabinet is equipped with an independent power module, this can lead to low load rates on the power modules under certain conditions, thus reducing overall efficiency. Therefore, the current power supply method for LED all-in-one machines suffers from low efficiency. Utility Model Content

[0003] This application provides a power supply system and an LED all-in-one machine, which can solve the problem of low efficiency in the current power supply method of LED all-in-one machines.

[0004] In a first aspect, embodiments of this application provide a power supply system, including multiple first LED cabinets and multiple second LED cabinets, wherein the first LED cabinets and the second LED cabinets are spliced ​​adjacent to each other, wherein a power module and a first HUB board are provided in the first LED cabinet, and a second HUB board is provided in the second LED cabinet, wherein the power module in the first LED cabinet is electrically connected to the first HUB board in the first LED cabinet and the second HUB board in the second LED cabinet corresponding to the first LED cabinet;

[0005] The power module in the first LED enclosure is used to supply power to the first HUB board in the first LED enclosure and the second HUB board in the second LED enclosure corresponding to the first LED enclosure.

[0006] In one possible implementation of the first aspect, the power module includes a filtering and rectifying unit, a voltage conversion unit, and a rectifying output unit. The voltage conversion unit is electrically connected to the filtering and rectifying unit and the rectifying output unit, respectively. The rectifying output unit is electrically connected to the first HUB board in the first LED enclosure and the second HUB board in the second LED enclosure corresponding to the first LED enclosure, respectively.

[0007] The filtering and rectifying unit is used to output a first voltage signal according to the input voltage signal, the voltage conversion unit is used to output a second voltage signal according to the first voltage signal, and the rectifier output unit is used to provide a first power supply voltage to the first HUB board in the first LED cabinet according to the second voltage signal, and is also used to provide a second power supply voltage to the second HUB board in the second LED cabinet corresponding to the first LED cabinet.

[0008] In one possible implementation of the first aspect, the filtering and rectifying unit includes a filtering subunit and a rectifying subunit, the rectifying subunit being electrically connected to the filtering subunit and the voltage conversion unit respectively; the filtering subunit is used to output a filtered signal according to the input voltage signal, and the rectifying unit is used to output the first voltage signal according to the filtered signal.

[0009] In one possible implementation of the first aspect, the power module further includes a data acquisition unit, which is electrically connected to the voltage conversion unit and the second HUB board in the second LED cabinet corresponding to the first LED cabinet; the data acquisition unit is used to acquire the power supply voltage of the second HUB board, and the power module is used to adjust the output voltage according to the power supply voltage of the second HUB board.

[0010] In one possible implementation of the first aspect, the acquisition unit includes a first resistor, a second resistor, a Zener diode, and a first optocoupler. The first end of the first resistor is electrically connected to the second HUB board in the second LED housing. The second end of the first resistor is electrically connected to the first end of the second resistor and the control terminal of the Zener diode. The first conducting end of the Zener diode and the second end of the second resistor are both grounded. The second conducting end of the Zener diode is electrically connected to the first output end of the first optocoupler. The first input end of the first optocoupler is used to be electrically connected to a first power supply. The second input end of the first optocoupler is electrically connected to the voltage conversion unit. The second output end of the first optocoupler is grounded.

[0011] In one possible implementation of the first aspect, the power supply system further includes a first anti-interference module, which is electrically connected to the power module and the second HUB board in the second LED cabinet corresponding to the first LED cabinet; the first anti-interference module is used to prevent a first high-frequency signal from being transmitted to the power module.

[0012] In one possible implementation of the first aspect, the first anti-interference module includes a first diode, the anode of which is electrically connected to the power module, and the cathode of which is electrically connected to the second HUB board in the second LED housing.

[0013] In one possible implementation of the first aspect, the power supply system further includes a second anti-interference module, which is electrically connected to the power module and the first HUB board in the first LED enclosure, respectively; the second anti-interference module is used to prevent a second high-frequency signal from being transmitted to the power module.

[0014] In one possible implementation of the first aspect, the second anti-interference module includes a second diode, the anode of which is electrically connected to the power module, and the cathode of which is electrically connected to the first HUB board in the first LED housing.

[0015] Secondly, embodiments of this application provide an LED all-in-one machine, including the power supply system described in any one of the first aspects.

[0016] The beneficial effects of the embodiments in this application compared with the prior art are:

[0017] The power supply system provided in this application embodiment includes multiple first LED cabinets and multiple second LED cabinets, which are adjacent to each other to form an integrated LED unit. Each first LED cabinet contains a power module and a first HUB board, while each second LED cabinet contains a second HUB board. The power module in the first LED cabinet is electrically connected to both the first HUB board in the first LED cabinet and the second HUB board in the corresponding second LED cabinet, providing power to both. Therefore, the power supply system provided in this application embodiment utilizes a single power module to simultaneously power both the first HUB board in its respective first LED cabinet and the second HUB board in its corresponding second LED cabinet, enabling two HUB boards to share a single power module. This design increases the load capacity of the power module, ensuring it operates at near-saturation, thus significantly improving overall efficiency. Furthermore, compared to existing LED all-in-one machines that require separate power modules in each LED cabinet, the power supply system in this application can ensure the normal display of the LED all-in-one machine by setting fewer power modules, simplifying the structural design of the LED all-in-one machine and significantly reducing its design cost. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic block diagram of a power supply system provided in an embodiment of this application;

[0020] Figure 2 This is a schematic block diagram of a power module provided in one embodiment of this application;

[0021] Figure 3 This is a schematic block diagram of a power module provided in another embodiment of this application;

[0022] Figure 4 This is a circuit connection diagram of a power module provided in an embodiment of this application;

[0023] Figure 5 This is a circuit connection diagram of the first anti-interference module and the second anti-interference module provided in an embodiment of this application.

[0024] In the diagram: 10, First LED cabinet; 101, Power supply module; 1011, Filtering and rectifying unit; 1012, Voltage conversion unit; 1013, Rectified output unit; 1014, Acquisition unit; 102, First HUB board; 20, Second LED cabinet; 201, Second HUB board; 30, First anti-interference module; 40, Second anti-interference module. Detailed Implementation

[0025] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0026] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0027] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [the described condition or event] is detected," or "in response to detection of [the described condition or event]."

[0028] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0030] Currently, LED integrated displays are powered by a power module installed in each LED cabinet. However, because each LED cabinet has an independent power module, the load rate of the power module may be low in certain situations, thus reducing overall efficiency. Therefore, the current power supply method for LED integrated displays suffers from low efficiency.

[0031] Based on the above problems, the power supply system provided in this application embodiment includes multiple first LED cabinets and multiple second LED cabinets, which are adjacent to each other to form an integrated LED unit. Each first LED cabinet contains a power module and a first HUB board, while each second LED cabinet contains a second HUB board. The power module in the first LED cabinet is electrically connected to both the first HUB board in the first LED cabinet and the second HUB board in the corresponding second LED cabinet, providing power to both. Therefore, the power supply system provided in this application embodiment utilizes a single power module to simultaneously power both the first HUB board in its respective first LED cabinet and the second HUB board in its corresponding second LED cabinet, enabling two HUB boards to share a single power module. This design increases the load capacity of the power module, ensuring it operates at near-saturation, thereby significantly improving overall efficiency. Furthermore, compared to existing LED all-in-one machines that require separate power modules in each LED cabinet, the power supply system in this application can ensure the normal display of the LED all-in-one machine by setting fewer power modules, simplifying the structural design of the LED all-in-one machine and significantly reducing its design cost.

[0032] To illustrate the technical solution described in this application, specific embodiments are provided below.

[0033] Figure 1 A schematic block diagram of a power supply system according to an embodiment of this application is shown. See also... Figure 1 As shown, the power supply system includes multiple first LED cabinets 10 and multiple second LED cabinets 20. The first LED cabinets 10 and the second LED cabinets 20 are spliced ​​adjacent to each other. The first LED cabinet 10 is provided with a power module 101 and a first HUB board 102. The second LED cabinet 20 is provided with a second HUB board 201. The power module 101 in the first LED cabinet 10 is electrically connected to the first HUB board 102 in the first LED cabinet 10 and the second HUB board 201 in the second LED cabinet 20 corresponding to the first LED cabinet 10.

[0034] Specifically, the power module 101 can supply power to the first HUB board 102 in the first LED cabinet 10 and the second HUB board 201 in the second LED cabinet 20 corresponding to the first LED cabinet 10. Therefore, the power supply system provided in this embodiment utilizes a single power module 101 to simultaneously supply power to both the first HUB board 102 in the first LED cabinet 10 and the second HUB board 201 in the second LED cabinet 20 corresponding to the first LED cabinet 10, enabling two HUB boards to share a single power module 101. This design increases the load capacity of the power module 101, ensuring it operates at near-saturation, thus significantly improving overall efficiency. Furthermore, compared to existing LED all-in-one machines that use a separate power module 101 in each LED cabinet, the power supply system in this application can ensure normal display of the LED all-in-one machine with fewer power modules 101, simplifying the structural design and significantly reducing the design cost.

[0035] It should be noted that, Figure 1 The power module 101 shown here, which supplies power to two adjacent HUB boards simultaneously, is only one example. Alternatively, the power module 101 can supply power to two adjacent HUB boards simultaneously (left and right), or a portion of the power modules 101 can supply power to two adjacent HUB boards simultaneously (top and bottom), while another portion supplies power to two adjacent HUB boards simultaneously (left and right). Furthermore, the power module 101 can also be housed within the second LED enclosure 20; this is not a limitation. The first HUB board 102 and the second HUB board 201 can be two identical HUB boards.

[0036] It should be noted that if the LED all-in-one machine consists of an even number (e.g., 24) LED cabinets, then the number of first LED cabinets 10 and second LED cabinets 20 is 12 each. If the LED all-in-one machine consists of an odd number (e.g., 25) LED cabinets, then the number of second LED cabinets 20 without power modules 101 is 12, and the number of first LED cabinets 10 with power modules 101 is 13. That is, each individual LED cabinet needs to be equipped with a power module 101 to power the HUB board in that LED cabinet.

[0037] It should be noted that if a row of LED cabinets is powered by a single power module 101, the LED cabinets require a large current. If a standard voltage output is used, voltage drops due to transmission medium losses will result in inconsistent voltage received by each LED cabinet. Therefore, a high-voltage transmission method is necessary. In this case, a step-down module needs to be added to each LED cabinet to reduce the high voltage to the actual voltage level required by the HUB board. While this can meet the power supply requirements of the HUB board, it increases the complexity of the system and may introduce additional costs and potential thermal management issues. The power supply system provided in this application utilizes a single power module 101 to simultaneously power the first HUB board 102 in the first LED cabinet 10 and the second HUB board 201 in the corresponding second LED cabinet 20, enabling two HUB boards to share a single power module 101. This design increases the load capacity of the power module 101, ensuring that it operates in a more saturated state, thereby significantly improving overall efficiency. Furthermore, because the power connection distance between adjacent LED cabinets is relatively short, the voltage drop caused by the cross-sectional area of ​​the transmission conductor is within the standard range of the LED cabinet. This also reduces the heat generation of the LED all-in-one screen, saving energy, protecting the environment, and improving the user experience.

[0038] In one embodiment of this application, such as Figure 2 As shown, the power module 101 includes a filter and rectifier unit 1011, a voltage conversion unit 1012, and a rectifier output unit 1013. The voltage conversion unit 1012 is electrically connected to the filter and rectifier unit 1011 and the rectifier output unit 1013, respectively. The rectifier output unit 1013 is electrically connected to the first HUB board 102 in the first LED cabinet 10 and the second HUB board 201 in the second LED cabinet 20 corresponding to the first LED cabinet 10.

[0039] Specifically, the filtering and rectifying unit 1011 filters and rectifies the input voltage signal AC input and outputs a first voltage signal (DC voltage signal). Simultaneously, the filtering and rectifying unit 1011 removes ripple and noise generated during rectification, ensuring a smooth and stable output DC voltage signal. The voltage conversion unit 1012 converts the first voltage signal to output a second voltage signal that meets the requirements of the first HUB board 102 and the second HUB board 201. The rectifier output unit 1013 further rectifies the second voltage signal and provides a first power supply voltage to the first HUB board 102 in the first LED housing 10, and also provides a second power supply voltage to the second HUB board 201 in the second LED housing 20 corresponding to the first LED housing 10.

[0040] In one embodiment of this application, the filter and rectifier unit 1011 includes a filter subunit and a rectifier subunit, and the rectifier subunit is electrically connected to the filter subunit and the voltage conversion unit 1012, respectively.

[0041] Specifically, the filtering subunit filters the input voltage signal AC input, removing noise and ripple to provide a smoother filtered signal output. The rectifier subunit receives the filtered signal from the filtering subunit and converts it into a stable DC voltage signal, i.e., the first voltage signal.

[0042] In one embodiment of this application, such as Figure 3 As shown, the power module 101 also includes a data acquisition unit 1014, which is electrically connected to the voltage conversion unit 1012 and the second HUB board 201 in the second LED box 20 corresponding to the first LED box 10.

[0043] Specifically, since the power supply current output by the power module 101 is relatively large, a certain voltage drop will occur in the power supply conductor connected to the second LED cabinet 20. In order to ensure that the power supply voltage of the power module 101 is not lower than the actual required voltage, it is necessary to set up a data acquisition unit 1014 to acquire the power supply voltage transmitted to the second HUB board 201 in the second LED cabinet 20 and output a feedback voltage to the voltage conversion unit 1012, so that the voltage conversion unit 1012 can adjust the output voltage of the power module 101 according to the feedback voltage, realize precise closed-loop control, and improve the reliability of the output voltage of the power module 101.

[0044] In one embodiment of this application, the acquisition unit 1014 includes a first resistor, a second resistor, a Zener diode, and a first optocoupler. The first terminal of the first resistor is electrically connected to the second HUB board 201 in the second LED housing 20. The second terminal of the first resistor is electrically connected to both the first terminal of the second resistor and the control terminal of the Zener diode. The first conducting terminal of the Zener diode and the second terminal of the second resistor are both grounded. The second conducting terminal of the Zener diode is electrically connected to the first output terminal of the first optocoupler. The first input terminal of the first optocoupler is used for electrical connection to a first power supply. The second input terminal of the first optocoupler is electrically connected to the voltage conversion unit 1012. The second output terminal of the first optocoupler is grounded. For example, as... Figure 4As shown, R527 serves as the first resistor, R530 as the second resistor, U501 as a Zener diode, and PC200A as the first optocoupler. The sampled voltage V_vfe, after being divided by R527 and R530, is transmitted to the control terminal of U501 to control the current flowing through U501. Since the current flowing through U501 is the same as the current flowing through PC200A, the first input and first output terminals of PC200A are energized, the LED conducts and emits light, thus connecting the input and output terminals of PC200B and obtaining a feedback voltage. The COMP pin of U500 receives the feedback voltage and is activated according to the feedback voltage control signal, thereby achieving precise closed-loop control of the voltage output by power module 101.

[0045] In one embodiment of this application, such as Figure 5 As shown, the power supply system also includes a first anti-interference module 30, which is electrically connected to the power supply module 101 and the second HUB board 201 in the second LED box 20 corresponding to the first LED box 10.

[0046] Specifically, since there may be crosstalk between adjacent LED cabinets, a first anti-interference module 30 can be set between the power module 101 and the second HUB board 201 in the second LED cabinet 20 to prevent the first high-frequency signal (noise and other interference signals) from being transmitted to the power module 101, thereby protecting the power module 101 and ensuring its normal operation.

[0047] In one embodiment of this application, such as Figure 5 As shown, the first anti-interference module 30 includes a first diode D1, the anode of the first diode D1 is electrically connected to the power module 101, and the cathode of the first diode D1 is electrically connected to the second HUB board 201 in the second LED housing 20.

[0048] Specifically, the first diode D1 has unidirectional conduction characteristics, which can prevent the first high-frequency signal from being input to the power module 101 in reverse, thus protecting the power module 101. In addition, the first diode D1 can also serve as a simple electromagnetic interference filter, reducing the impact of external interference signals on the power module 101.

[0049] In one embodiment of this application, such as Figure 5 As shown, the power supply system also includes a second anti-interference module 40, which is electrically connected to the power supply module 101 and the first HUB board 102 in the first LED cabinet 10.

[0050] Specifically, since there may be crosstalk between adjacent LED cabinets, a second anti-interference module 40 can be set between the power module 101 and the first HUB board 102 in the first LED cabinet 10 to prevent the second high-frequency signal (noise and other interference signals) from being transmitted to the power module 101, thereby protecting the power module 101 and ensuring its normal operation.

[0051] In one embodiment of this application, such as Figure 5 As shown, the second anti-interference module 40 includes a second diode D2. The anode of the second diode D2 is electrically connected to the power module 101, and the cathode of the second diode D2 is electrically connected to the first HUB board 102 in the first LED housing 10.

[0052] Specifically, the second diode D2 has unidirectional conduction characteristics, which can prevent the second high-frequency signal from being input to the power module 101 in reverse, thus protecting the power module 101. In addition, the second diode D2 can also serve as a simple electromagnetic interference filter, reducing the impact of external interference signals on the power module 101.

[0053] This application also discloses an LED all-in-one machine, including the power supply system described above. By adopting the power supply system described above, the structural design of the LED all-in-one machine can be simplified, the design cost of the LED all-in-one machine can be significantly reduced, and the reliability of the LED all-in-one machine display can be improved.

[0054] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A power supply system, characterized in that, It includes multiple first LED cabinets and multiple second LED cabinets, with the first LED cabinets and second LED cabinets being spliced ​​together adjacent to each other. The first LED cabinet is equipped with a power module and a first HUB board, and the second LED cabinet is equipped with a second HUB board. The power module in the first LED cabinet is electrically connected to the first HUB board in the first LED cabinet and the second HUB board in the second LED cabinet corresponding to the first LED cabinet. The power module in the first LED enclosure is used to supply power to the first HUB board in the first LED enclosure and the second HUB board in the second LED enclosure corresponding to the first LED enclosure.

2. The power supply system according to claim 1, characterized in that, The power module includes a filtering and rectifying unit, a voltage conversion unit, and a rectifying output unit. The voltage conversion unit is electrically connected to the filtering and rectifying unit and the rectifying output unit, respectively. The rectifying output unit is electrically connected to the first HUB board in the first LED cabinet and the second HUB board in the second LED cabinet corresponding to the first LED cabinet. The filtering and rectifying unit is used to output a first voltage signal according to the input voltage signal, the voltage conversion unit is used to output a second voltage signal according to the first voltage signal, and the rectifier output unit is used to provide a first power supply voltage to the first HUB board in the first LED cabinet according to the second voltage signal, and is also used to provide a second power supply voltage to the second HUB board in the second LED cabinet corresponding to the first LED cabinet.

3. The power supply system according to claim 2, characterized in that, The filtering and rectifying unit includes a filtering subunit and a rectifying subunit, and the rectifying subunit is electrically connected to the filtering subunit and the voltage conversion unit, respectively; the filtering subunit is used to output a filtered signal according to the input voltage signal, and the rectifying subunit is used to output the first voltage signal according to the filtered signal.

4. The power supply system according to claim 2, characterized in that, The power module further includes a data acquisition unit, which is electrically connected to the voltage conversion unit and the second HUB board in the second LED cabinet corresponding to the first LED cabinet. The data acquisition unit is used to acquire the power supply voltage of the second HUB board, and the power module is used to adjust the output voltage according to the power supply voltage of the second HUB board.

5. The power supply system according to claim 4, characterized in that, The acquisition unit includes a first resistor, a second resistor, a Zener diode, and a first optocoupler. The first end of the first resistor is electrically connected to the second HUB board in the second LED housing. The second end of the first resistor is electrically connected to the first end of the second resistor and the control end of the Zener diode. The first conducting end of the Zener diode and the second end of the second resistor are both grounded. The second conducting end of the Zener diode is electrically connected to the first output end of the first optocoupler. The first input end of the first optocoupler is used to be electrically connected to a first power supply. The second input end of the first optocoupler is electrically connected to the voltage conversion unit. The second output end of the first optocoupler is grounded.

6. The power supply system according to any one of claims 1-5, characterized in that, The power supply system further includes a first anti-interference module, which is electrically connected to the power module and the second HUB board in the second LED cabinet corresponding to the first LED cabinet; the first anti-interference module is used to prevent the first high-frequency signal from being transmitted to the power module.

7. The power supply system according to claim 6, characterized in that, The first anti-interference module includes a first diode, the anode of which is electrically connected to the power module, and the cathode of which is electrically connected to the second HUB board in the second LED housing.

8. The power supply system according to claim 6, characterized in that, The power supply system further includes a second anti-interference module, which is electrically connected to the power module and the first HUB board in the first LED enclosure, respectively; the second anti-interference module is used to prevent the transmission of a second high-frequency signal to the power module.

9. The power supply system according to claim 8, characterized in that, The second anti-interference module includes a second diode, the anode of which is electrically connected to the power module, and the cathode of which is electrically connected to the first HUB board in the first LED housing.

10. An LED all-in-one machine, characterized in that, Includes the power supply system as described in any one of claims 1-9.

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