Power supply multi-backup system, power supply method and LED display screen
By adopting the power supply multiple backup system in the LED box power supply, the use of fault detection and a common current control module solves the problem of power design parameters in existing technologies, and achieves lower design difficulties and higher. Safety.
Patent Information
- Application Number
- CN202310860990.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-13
- Publication Date
- 2025-01-24
AI Technical Summary
The design parameters of existing LED box power supply are relatively redundant, which makes the design more difficult and costly. Especially when one power supply has problems, the other power supply needs to undertake the power supply task of higher power.
A multi-backup power supply system is adopted, including a display module, a fault detection module, a main control module and a current sharing control module. By detecting internal power supply faults, it generates switch control instructions and controls the parallel current sharing of internal power supplies to ensure that the internal power supply that is not faulty is LED box power supply.
The redundant design of the power parameter is reduced, the design difficulty of the power parameter design is reduced, and the same power supply is used to backup, which greatly reduces the cost and improves the safety of the system.
Smart Images
Figure CN119362387A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of LED display technology, and in particular to a power supply multi-backup system, a power supply method and an LED display screen. Background Art
[0002] As LED display technology becomes more and more mature, LED display screens are being used more and more widely, whether for outdoor or indoor design applications, and the design of the power supply part is crucial. In existing power supply design schemes, two identical power supply circuits are usually designed, one as the main power supply and the other as the backup power supply. When the LED box is displaying normally, the two power supplies will balance the current and jointly bear the power supply task. When one of the power supplies has a problem, the other backup power supply will bear all the tasks of supplying normal power to the LED box. This scheme will make the design parameters more redundant and the parameter design more difficult. For example, if an LED box requires 200W power supply, when the power supply is working normally, the two power supplies will balance the current, and each power supply only needs to bear 100W power supply to support the normal display of the LED box. When one power supply has a problem, the other power supply needs to bear 200W power supply task. This will make it more difficult to design single power supply parameters and the design cost will also be higher. Summary of the invention
[0003] The implementation methods of the present application mainly solve the technical problem that the design parameter redundancy of the existing LED cabinet power supply is relatively large.
[0004] In order to solve the above technical problems, a technical solution adopted in the embodiment of the present application is to provide a power supply multi-backup system, including:
[0005] A display module, wherein the display module comprises at least two LED boxes and at least two internal power supplies connected to the at least two LED boxes, wherein the at least two LED boxes are connected to the at least two internal power supplies in a one-to-one correspondence via at least two wires;
[0006] a fault detection module, the fault detection module being electrically connected to the at least two internal power supplies, the fault detection module being used to detect whether the internal power supplies are faulty, and to generate fault information based on the faulty internal power supplies;
[0007] A main control module, the main control module is electrically connected to the fault detection module, and the main control module is used to generate a switch control instruction according to the fault information;
[0008] A current sharing control module is electrically connected to the main control module and the at least two LED boxes respectively, and is used to control the at least two internal power supplies to be connected in parallel for current sharing according to the switch control instruction.
[0009] Optionally, at least one connecting switch is connected between the at least two wires, and the at least one connecting switch is used to control the current sharing of the at least two internal power supplies. The current sharing control module controls the closing of the connecting switch according to the switch control instruction, so that the at least two internal power supplies are connected in parallel and share the current, thereby controlling the non-faulty internal power supply to power the at least two LED boxes.
[0010] Optionally, when the at least two internal power supplies in the display module are not faulty, the connection switches are disconnected, and each internal power supply supplies power to the corresponding LED box separately.
[0011] Optionally, the internal power supply is connected to AC power from the mains, and the internal power supply is used to convert the AC power from the mains into DC power, and to power the LED box based on the DC power.
[0012] Optionally, the main control module is a microcontroller.
[0013] Optionally, the display module includes four LED boxes and four internal power supplies, and the four LED boxes are connected to the four internal power supplies in a one-to-one correspondence via four wires.
[0014] Optionally, the power supply multi-backup system includes at least one display module, each of the display modules is connected to the fault detection module, the fault detection module is used to detect whether an internal power supply fails, and generate fault information based on the faulty internal power supply, wherein the fault information includes identification information for identifying the corresponding display module.
[0015] In order to solve the above technical problems, another technical solution adopted in the embodiment of the present application is: to provide a power supply method, which is applied to the above-mentioned power supply multi-backup system, and the method comprises:
[0016] Detecting whether an internal power supply in the display module fails;
[0017] If there is a faulty internal power supply in the display module, the at least two internal power supplies are controlled to be connected in parallel for current sharing, so that the non-faulty internal power supply can supply power to the at least two LED boxes.
[0018] Optionally, at least one connection switch is connected between the at least two wires, and the at least one connection switch is used to control the at least two internal power supplies to share the current, and the controlling the at least two internal power supplies to share the current in parallel so that the non-faulty internal power supply supplies power to the at least two LED boxes includes:
[0019] generating fault information based on a failed internal power supply;
[0020] generating a switch control instruction according to the fault information;
[0021] The connection switch is controlled to close according to the switch control instruction so that the at least two internal power supplies are connected in parallel and current is shared.
[0022] In order to solve the above technical problems, another technical solution adopted in the implementation mode of the present application is: to provide an LED display screen, including the power multi-backup system as described above.
[0023] Different from the related art, the present application provides a power supply multi-backup system, a power supply method and an LED display screen. The system includes a display module, a fault detection module, a main control module and a current sharing control module. The display module includes at least two LED boxes and at least two internal power supplies correspondingly connected to the at least two LED boxes, wherein the at least two LED boxes are connected to the at least two internal power supplies in a one-to-one correspondence through at least two wires, the fault detection module is electrically connected to the at least two internal power supplies, the main control module is electrically connected to the fault detection module, and the current sharing control module is electrically connected to the main control module and the at least two LED boxes respectively. The fault detection module is used to detect whether the internal power supply fails, and when it is detected that the internal power supply fails, it generates fault information, the main control module is used to generate a switch control instruction according to the fault information, and the current sharing control module is used to control the connection switch to close according to the switch control instruction, so that the at least two internal power supplies are connected in parallel and share the current, and then control the internal power supply that is not faulty to power the at least two LED boxes. The power supply multi-backup system provided in the embodiment of the present application can reduce the redundant design of power supply parameters, reduce the difficulty of power supply parameter design, and avoid designing an additional identical power supply for backup, thereby greatly reducing costs. When an internal power supply fails, another non-faulty power supply can share the power supply task of an LED box in a display module, thereby reducing the probability of a circuit being dangerous due to a power supply failure and improving the safety of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.
[0025] Figure 1 It is a structural schematic diagram of a power supply multi-backup system provided in an embodiment of the present application;
[0026] Figure 2 is a structural schematic diagram of a display module provided in an embodiment of the present application;
[0027] Figure 3It is a structural schematic diagram of another power supply multi-backup system provided in an embodiment of the present application;
[0028] Figure 4 It is a structural diagram of another power supply multi-backup system provided in an embodiment of the present application;
[0029] Figure 5 It is a structural diagram of another power supply multi-backup system provided in an embodiment of the present application. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the protection scope of the present application. In addition, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different order from the module division in the device schematic diagram or the flow chart.
[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.
[0032] See also Figure 1 The embodiment of the present application provides a power supply multi-backup system, which includes a display module 10, a fault detection module 20, a main control module 30 and a current sharing control module 40. Specifically, Figure 1 As shown, the display module 10 includes at least two LED boxes 11. Figure 1 4 are taken as an example, and at least two internal power supplies 12 correspondingly connected to at least two LED boxes 11, wherein 4 are taken as an example, wherein at least two LED boxes and at least two internal power supplies are connected via at least two wires ( Figure 1 It is understood that the display module 10 in the figure includes 4 LED boxes 11 and 4 internal power supplies 12. In order to avoid affecting the wiring diagram, Figure 1 The identification of the two middle LED boxes 11 is omitted.
[0033] The fault detection module 20 is electrically connected to at least two internal power supplies 12, the main control module 30 is electrically connected to the fault detection module 20, and the current sharing control module is electrically connected to the main control module and at least two LED boxes, respectively. Specifically, the fault detection module 20 can detect whether the internal power supply fails. When it is detected that the internal power supply fails, fault information will be generated according to the failed internal power supply, and the fault information will be transmitted to the main control module 30. The main control module 30 can know from the fault information that the internal power supply in the current display module fails, and generate a switch control instruction according to the fault information, and transmit the switch control instruction to the current sharing control module 40. The current sharing control module 40 can control at least two internal power supplies to share current in parallel according to the switch control instruction. Here, the at least two internal power supplies for current sharing in parallel refer to the internal power supplies in the current display module.
[0034] Please combine Figure 2 , Figure 2 It is a structural schematic diagram of a display module provided in an embodiment of the present application. The internal power supply in the display module is also connected to a power supply device. In the embodiment of the present application, taking the AC input of the mains as an example, the internal power supply can convert the AC power of the mains into DC power, and power the LED box based on the DC power. At least one connection switch is connected between at least two wires, and at least one connection switch is used to control the current sharing of at least two internal power supplies. The current sharing control module can control the connection switch to close according to the switch control instruction, so that at least two internal power supplies are connected in parallel and current sharing is achieved, thereby controlling the internal power supply without fault to power at least two LED boxes.
[0035] In the embodiment of the present application, four LED boxes and four internal power supplies are still taken as an example. Figure 2 As shown, the four LED boxes are connected to the four internal power supplies through four wires one by one. Figure 2 The wires are shown in the figure, and three connection switches are connected between the four wires. These three connection switches can control the current sharing of the four internal power supplies. That is, when the three connection switches are all closed, the four internal power supplies are connected in parallel to share the current and jointly supply power to the four LED boxes. It should be noted that when at least two internal power supplies in the display module are not faulty, the connection switches are all disconnected, and each internal power supply supplies power to the corresponding LED box separately. Specifically, combined with Figure 2 As shown, when the internal power supplies 12a-12d are not faulty, the connection switches 1-3 are all disconnected, and the internal power supplies 12a-11d supply power to the LED boxes 11a-11d separately.
[0036] When there is a faulty internal power supply in the display module, Figure 1 and Figure 2For example, assuming that the fault detection module 20 detects that the internal power supply 12b fails and cannot supply power to the LED box 11b, it will generate fault information and transmit the fault information to the main control module 30. The main control module here can be a functional chip or control device with information processing function, such as a microcontroller MCU or a single-chip microcomputer. After receiving the fault information, the main control module 30 determines that there is a fault in the internal power supply of the current display module, and generates a switch control instruction, and transmits the switch control instruction to the current sharing control module 40. The current sharing control module 40 controls the connection switches 1-3 to be closed according to the switch control instruction. At this time, the internal power supplies 12a-12d are connected in parallel to share the current, but because the internal power supply 12b fails and cannot supply power, it can be regarded as the internal power supplies 12a, 12c and 12d are connected in parallel to share the current, and together supply power to the LED boxes 11a-11d.
[0037] Compared with the scheme of the main power supply and the backup power supply provided by the prior art, the power supply multi-backup system provided by the present application can reduce the redundant design of power supply parameters and reduce the difficulty of power supply parameter design. For example, if an LED box needs 200W power supply, in the existing scheme, when the power supplies are not faulty, the main power supply and the backup power supply are current-balanced, and only each power supply needs to bear 100W power supply to support the normal display of the LED box. When one power supply has a problem, the other power supply needs to bear the 200W power supply task. When designing the power supply parameters, the normal working state of the power supply is 100W, and it is also necessary to ensure that the power supply can support an output range of 1-2 times of 100W. In this scheme, when the power supplies are not faulty, each internal power supply provides an output of 200W. When an internal power supply has a problem, the remaining three internal power supplies jointly bear an output of 800W, and each power supply bears an output of approximately 266W. When designing the power supply parameters, the normal working state of the power supply is 200W, and it is also necessary to ensure that the power supply can support an output range of 1-1.34 times of 200W, which greatly reduces the difficulty of power supply parameter design. In addition, the solution provided in the embodiment of the present application avoids the need to design an additional identical power supply for backup, greatly reducing costs. When one (or several) internal power supplies fail, the other three (or several) power supplies can jointly assume the task of powering the LED box in a display module, thereby reducing the probability of a circuit being dangerous due to a power supply failure and improving the safety of the entire system.
[0038] In some other embodiments, the power backup system may include at least one display module, such as Figure 3As shown, for example, three display modules 10a-10c may be included, each of which is connected to a fault detection module, which can detect whether an internal power supply fails, and generate fault information based on the failed internal power supply. The fault information includes identification information for identifying the corresponding display module, that is, the fault information generated by the fault detection module at this time includes identification information of the display module with a faulty internal power supply. Specifically, assuming that an internal power supply fails in the display module 10a, the main control module can determine that there is a faulty internal power supply in the display module 10a based on the fault information, and generate a switch control instruction, which causes the current sharing control module 40 to control the connection switch in the display module 10a to close.
[0039] In some other embodiments, the power backup system may include at least one display module, and at least one fault detection module correspondingly connected to the at least one display module, such as Figure 4 As shown, for example, three display modules 10d-10f and three fault detection modules 20d-20f may be included, and the display modules and the fault detection modules are connected one by one. After different fault detection modules detect the faulty internal power supply, the fault information sent to the active module has different identifiers. Specifically, assuming that there is a fault in the internal power supply of the display module 10d, then the fault detection module 20d transmits the fault information to the main control module. The main control module can determine that there is a faulty internal power supply in the display module 10d based on this fault information, and generate a switch control instruction. This switch control instruction will cause the current sharing control module 40 to control the connection switch in the display module 10d to close.
[0040] In some other embodiments, the power backup system may include at least one display module, and at least one current sharing control module correspondingly connected to the at least one display module. Figure 5 As shown, for example, three display modules 10g-10i and three current sharing control modules 40g-40i may be included, and the display modules and the current sharing control modules are connected one by one. Figure 3 The corresponding example is similar, the fault detection module generates fault information based on the faulty internal power supply, and the fault information includes the identification information of the display module with the faulty internal power supply. Specifically, assuming that the internal power supply of the display module 10g fails, the main control module can determine that the faulty internal power supply exists in the display module 10g based on the fault information, generate a switch control instruction and transmit it to the current sharing control module 40g, and then the current sharing control module 40g controls the connection switch in the display module 10g to close based on the switch control instruction.
[0041] The present application provides a power supply method, which is applied to the above power backup system. The method includes:
[0042] S11, detecting whether an internal power supply in the display module fails. Detecting whether an internal power supply in the current display module fails by a fault detection module.
[0043] When there is a faulty internal power supply in the display module, step S12 is executed to control at least two internal power supplies to be connected in parallel and current-balanced, so that the internal power supply that is not faulty can supply power to at least two LED boxes. Specifically, controlling the at least two internal power supplies to be connected in parallel and current-balanced includes:
[0044] S121, generating fault information according to the faulty internal power supply. The fault information is generated by a fault detection module, and the fault information indicates that there is a faulty internal power supply in the current display module.
[0045] S122, generating a switch control instruction according to the fault information: The main control module receives the fault information, and generates a switch control instruction according to the fault information, wherein the switch control instruction is used to control the connection switch in the current display module to close.
[0046] S123, according to the switch control instruction, control the connection switch to close so that the at least two internal power supplies are connected in parallel and current is shared. The current sharing control module controls the connection switch in the current display module to close so that the at least two internal power supplies are connected in parallel and current is shared, thereby controlling the internal power supply without fault to supply power to the at least two LED boxes.
[0047] It should be noted that the above power supply method is applied to the power supply multi-backup system provided in the embodiment of the present application, and has the beneficial effects when the power supply multi-backup system is used accordingly. For technical details not fully described in the power supply method embodiment, please refer to the power supply multi-backup system provided in the embodiment of the present application.
[0048] The embodiment of the present application also provides an LED display screen, which includes the power supply multi-backup system provided in the above embodiment. The LED display screen product can execute the power supply method provided in the embodiment of the present application, and has the beneficial effects when the power supply multi-backup system is used accordingly. For technical details not described in detail in this embodiment, please refer to the power supply multi-backup system provided in the embodiment of the present application.
[0049] Through the description of the above implementation methods, ordinary technicians in this field can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Ordinary technicians in this field can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A power supply multi-backup system, characterized in that: include: A display module, wherein the display module comprises at least two LED boxes and at least two internal power supplies connected to the at least two LED boxes, wherein the at least two LED boxes are connected to the at least two internal power supplies in a one-to-one correspondence via at least two wires; a fault detection module, the fault detection module being electrically connected to the at least two internal power supplies, the fault detection module being used to detect whether the internal power supplies are faulty, and to generate fault information based on the faulty internal power supplies; A main control module, the main control module is electrically connected to the fault detection module, and the main control module is used to generate a switch control instruction according to the fault information; A current sharing control module is electrically connected to the main control module and the at least two LED boxes respectively, and is used to control the at least two internal power supplies to be connected in parallel for current sharing according to the switch control instruction.
2. The power supply multi-backup system according to claim 1, characterized in that: At least one connecting switch is connected between the at least two conducting wires, and the at least one connecting switch is used to control the current sharing of the at least two internal power supplies. The current sharing control module controls the closing of the connecting switch according to the switch control instruction, so that the at least two internal power supplies are connected in parallel and share the current, thereby controlling the non-faulty internal power supply to power the at least two LED boxes.
3. The power supply multi-backup system according to claim 2, characterized in that: When the at least two internal power supplies in the display module are not faulty, the connection switches are disconnected, and each internal power supply supplies power to the corresponding LED box independently.
4. The power supply multi-backup system according to claim 1, characterized in that: The internal power supply is connected to the AC power of the mains, and is used to convert the AC power of the mains into DC power, and to supply power to the LED box based on the DC power.
5. The power supply multi-backup system according to claim 1, characterized in that: The main control module is a microcontroller.
6. The power supply multi-backup system according to claim 1, characterized in that: The display module includes four LED boxes and four internal power supplies, and the four LED boxes are connected to the four internal power supplies in a one-to-one correspondence through four wires.
7. The power supply multi-backup system according to claim 1, characterized in that: The power supply multi-backup system includes at least one display module, each of which is connected to the fault detection module. The fault detection module is used to detect whether an internal power supply fails and generate fault information based on the faulty internal power supply, wherein the fault information includes identification information for identifying the corresponding display module.
8. A power supply method, applied to the power supply multi-backup system according to any one of claims 1 to 7, characterized in that: The method comprises: Detecting whether an internal power supply in the display module fails; If there is a faulty internal power supply in the display module, the at least two internal power supplies are controlled to be connected in parallel for current sharing, so that the non-faulty internal power supply can supply power to the at least two LED boxes.
9. The method according to claim 8, characterized in that At least one connection switch is connected between the at least two wires, and the at least one connection switch is used to control the at least two internal power supplies to share the current, and the control of the at least two internal power supplies to share the current in parallel so that the internal power supply without failure supplies power to the at least two LED boxes includes: generating fault information based on a failed internal power supply; generating a switch control instruction according to the fault information; The connection switch is controlled to close according to the switch control instruction so that the at least two internal power supplies are connected in parallel and current is shared.
10. An LED display screen, characterized in that: It comprises a power supply multi-backup system as described in any one of claims 1 to 7.