Grounding system and method for solving communication interference of optical storage all-in-one machine

Abstract

The invention relates to the technical field of optical storage all-in-one machine communication interference, and particularly discloses a grounding system for solving optical storage all-in-one machine communication interference, which comprises a DCDC cabinet and a DCAC cabinet, and is characterized in that the DCDC cabinet and the DCAC cabinet are arranged in parallel; the input end of the DCDC cabinet is connected with a direct current source, the output end of the DCDC cabinet is connected with the DCAC cabinet through a communication network cable, and a magnetic ring and a shielding layer are arranged on the communication network cable; grounding points are respectively arranged on a shell of the DCDC cabinet and a shell of the DCAC cabinet, each grounding point is correspondingly connected with a grounding electrode, and the grounding points are connected with the grounding electrodes through ground wires; through the arrangement, the electrical connection between the two cabinets is independent and does not interfere with each other, and the magnetic ring is arranged on the communication network cable, so that the conduction of high-frequency noise is further inhibited; compared with a twisted pair, the effect of inhibiting low-frequency interference is better; the invention also provides a method for solving the communication interference of the optical storage all-in-one machine, which is suitable for the system.

Description

Technical Field

[0001] The present invention relates to the technical field of communication interference of an integrated photovoltaic and storage device, and in particular to a grounding system for solving the communication interference of an integrated photovoltaic and storage device. Background Art

[0002] The photovoltaic energy storage system is a device that integrates photovoltaic power generation and energy storage, with advantages such as improving energy utilization and enhancing power supply stability. An integrated optical storage system typically consists of multiple DC / DC and DC / AC modules connected in parallel. Each module generates high-frequency switching noise and electromagnetic radiation. When multiple devices operate simultaneously, these noise and radiation are superimposed, creating a more complex electromagnetic environment and leading to communication interference. Regarding communication interference, in existing technologies, most manufacturers use twisted-pair cables to reduce the interference of differential-mode noise. However, the high-frequency switching noise generated by the DCDC and DCAC modules in the integrated optical storage device has a wide spectrum. Twisted-pair cables mainly target low-frequency differential-mode noise and have limited suppression effect on high-frequency noise. When multiple devices are used in parallel, high-frequency noise will be superimposed and propagated through spatial radiation. Twisted-pair cables cannot completely eliminate this superimposed noise.

[0003] Therefore, there is an urgent need for a grounding system and method for solving communication interference of an integrated optical storage device to solve the above problems. Summary of the Invention

[0004] The main purpose of this application is to provide a grounding system for solving the communication interference of the optical storage integrated machine, aiming to solve the problem of poor suppression effect in the existing technology of using twisted pair cables to reduce the communication interference of the optical storage integrated machine.

[0005] To achieve the above objectives, the present application provides a grounding system for resolving communication interference in an integrated optical storage device, comprising a DC / DC cabinet and a DC / AC cabinet, wherein the DC / CDC cabinet and the DC / AC cabinet are arranged in parallel; the input end of the DCDC cabinet is connected to a DC source, and the output end of the DCDC cabinet is connected to the DC / AC cabinet via a communication network cable, wherein a magnetic ring and a shielding layer are provided on the communication network cable; grounding points are respectively provided on the outer casings of the DCDC cabinet and the DC / AC cabinet, each of the grounding points is correspondingly connected to a grounding electrode, and the grounding points and the grounding electrodes are connected via a ground wire.

[0006] As a preferred solution of the present application, the number of the DCDC cabinets is two, the two DCDC cabinets are respectively connected to different DC sources, and the two DCDC cabinets are arranged in parallel.

[0007] As a preferred solution of the present application, a heat shrink tube sleeve is provided on the magnetic ring.

[0008] As a preferred solution of the present application, the diameter of the heat shrink tube sleeve is φ40 and the length is 35 mm.

[0009] As a preferred solution of the present application, the magnetic ring on the communication network cable is arranged close to one side of the DCDC cabinet.

[0010] As a preferred solution of the present application, the DCDC cabinet is composed of several DCDC modules, the input end of each DCDC module is connected to an independent photovoltaic module, the output end of each DCDC module is connected in parallel to the same battery pack, and the several DCDC modules are connected by a communication line, a shielding layer is provided on the communication line, and the communication line is single-ended grounded.

[0011] As a preferred solution of the present application, a PCB board is respectively provided inside the DCDC cabinet and the DCAC cabinet, and a network port is provided on the PCB board. The network port is a network port with a metal shell.

[0012] As a preferred solution of the present application, it further includes a screen, which is provided on the DCAC cabinet and is connected to the communication interface of the DCAC via a data cable.

[0013] As a preferred solution of the present application, the shielding layer adopts a composite shielding layer of aluminum foil and copper braiding.

[0014] To achieve the above objectives, the present application further provides a grounding system for resolving communication interference in an integrated photovoltaic and storage device, which is applicable to the above-mentioned method for resolving communication interference in an integrated photovoltaic and storage device, comprising: Use the metal shielding layer of the communication network cable to obtain external radiation interference signals; The external radiation interference signal is transmitted to the metal shell head of the communication network cable through the conductive material in the communication network cable; Use the metal shell head to transmit the external radiation interference signal to the metal shell network port on the PCB board of the DCDC cabinet and DCAC cabinet; Use the metal shell network port on the PCB board to transmit the external radiation interference signal to the casing of the DCDC cabinet and DCAC cabinet; The external communication interference signal is transmitted to the ground through the housing through the grounding point on the housing; The ground wire is used to transmit the external radiation interference signal to the ground, thereby effectively suppressing the interference signal.

[0015] The present application provides a grounding system for solving communication interference of an integrated optical storage device. By setting a DCDC cabinet and a DCAC cabinet in parallel, it is ensured that the electrical connections between the two cabinets are independent and do not interfere with each other; a ground wire is connected to the shielding layer close to the DCDC cabinet, and the shielding layer close to the DCAC cabinet is suspended to avoid the formation of a grounding loop and reduce the introduction of common-mode noise; at the same time, a magnetic ring is set on the communication network cable to further suppress the conduction of high-frequency noise; compared with twisted pair cables that can only suppress low-frequency interference, the effect is better. Furthermore, grounding points are respectively set on the outer shells of the DCDC cabinet and the DCAC cabinet, and are connected to the earth through separate ground wires to ensure that the interference signal can be effectively dissipated; the present application also provides a method for solving communication interference of an integrated optical storage device, which is applicable to the above-mentioned grounding system for solving communication interference of an integrated optical storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a ground connection solution for an integrated optical storage device proposed by the present invention; Figure 2 This is a schematic diagram of the circuit connection of a solution to the problem of an integrated optical storage device proposed by the present invention; Figure 3 This is a flow chart of a method proposed by the present invention for resolving communication interference in an integrated optical storage device. DETAILED DESCRIPTION

[0017] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0018] Furthermore, any references to "first," "second," and the like in this application are for descriptive purposes only (e.g., to distinguish identical or similar elements) and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined with one another, but this must be based on the ability of a person of ordinary skill in the art to implement them. If a combination of technical solutions contradicts or cannot be implemented, such combination of technical solutions shall be deemed non-existent and not within the scope of protection claimed in this application.

[0019] Please refer to Figure 1 , Figure 2In one embodiment, a grounding system for solving communication interference of an integrated optical storage device includes a DCDC cabinet and a DCAC cabinet, wherein the DCDC cabinet and the DCAC cabinet are arranged in parallel; The input end of the DCDC cabinet is connected to a DC source, and the output end of the DCDC cabinet is connected to the DCAC cabinet via a communication network cable, wherein a magnetic ring and a shielding layer are provided on the communication network cable; Grounding points are respectively provided on the outer shells of the DCDC cabinet and the DCAC cabinet, each of the grounding points is correspondingly connected to a grounding electrode, and the grounding points are connected to the grounding electrodes through a ground wire.

[0020] Furthermore, in this embodiment, there are two DCDC cabinets, the two DCDC cabinets are respectively connected to different DC sources, and the two DCDC cabinets are arranged in parallel.

[0021] As you can understand, each communication network cable has a single-ended ground wire, and each DCDC cabinet and DCAC cabinet has a separate ground wire. This ensures that each cabinet collects interference into its own ground loop. At the same time, the starting and ending points of the entire communication system also have 120Ω matching resistors. The communication line is also a shielded twisted pair cable. The communication network cable between the two cabinets also has a magnetic ring. By setting up such a grounding system, some communication interference problems can be solved. In summary, the present application ensures that the electrical connections between the DCDC cabinet and the DCAC cabinet are independent and do not interfere with each other by setting them in parallel; the shielding layer close to the DCDC cabinet is connected to the ground wire, and the shielding layer close to the DCAC cabinet is suspended to avoid the formation of a ground loop and reduce the introduction of common-mode noise; at the same time, a magnetic ring is set on the communication network cable to further suppress the conduction of high-frequency noise; compared with twisted pair cables that can only suppress low-frequency interference, the effect is better. Furthermore, grounding points are set on the outer shells of the DCDC cabinet and the DCAC cabinet respectively, and connected to the ground through separate ground wires to ensure that the interference signal can be effectively dissipated.

[0022] Specifically, based on the above embodiment, a heat shrink tube sleeve is provided on the magnetic ring, and the diameter of the heat shrink tube sleeve is φ40 and the length is 35 mm.

[0023] It can be understood that the heat shrink tube can wrap the magnetic ring to prevent the magnetic ring from direct contact with surrounding metal parts (such as communication network cables, cabinet casings, etc.), preventing short circuit problems caused by contact. At the same time, the heat shrink tube provides good insulation performance, ensuring effective electrical isolation between the magnetic ring and the external environment, reducing the risk of leakage or interference signal leakage. Furthermore, the heat shrink tube can protect the magnetic ring from mechanical wear, especially during installation, disassembly or equipment operation, to prevent the surface of the magnetic ring from being scratched or damaged.

[0024] Specifically, based on the above embodiment, the magnetic ring on the communication network cable is arranged close to one side of the DCDC cabinet.

[0025] Specifically, based on the above embodiment, the DCDC cabinet is composed of several DCDC modules, the input end of each DCDC module is connected to an independent photovoltaic component, the output end of each DCDC module is connected in parallel to the same battery pack, and the several DCDC modules are connected by a communication line, a shielding layer is provided on the communication line, and the communication line is grounded at one end.

[0026] It can be understood that since each DCDC module works independently, there is no need to shut down the system when maintaining or replacing a faulty module. The corresponding module can be directly disconnected to ensure continuous operation of the system. The operating status of each DCDC module can also be monitored in real time through an intelligent monitoring system to promptly detect and address problems. Furthermore, setting a shielding layer on the communication line can effectively block external electromagnetic interference (such as radio waves, power supply noise, etc.) from interfering with the communication signal. The single-ended grounding design can avoid the formation of ground loops, eliminate ground loop interference, and reduce the impact of noise on the communication signal.

[0027] Specifically, based on the above embodiments, PCB boards are respectively provided inside the DCDC cabinet and the DCAC cabinet, and a network port is provided on the PCB board, and the network port is a network port with a metal shell; it can be understood that the metal shielding layer of the communication network cable is connected to the metal shell head of the network port on the PCB board, and the grounding signal of the shielding layer is conducted to the PCB board. The metal shell head of the network port on the PCB board is connected to the grounding layer of the PCB or the screws for fixing the PCB through a wire or directly; the screws for fixing the PCB are in contact with the metal shell of the cabinet, and finally the grounding signal of the shielding layer is conducted into the earth.

[0028] Specifically, based on the above embodiment, a screen is further included. The DCAC cabinet is provided with a screen, and the screen is connected to the communication interface of the DCAC via a data cable.

[0029] It can be understood that by setting the screen, the operating status of the DCAC cabinet can be displayed in real time, such as input and output voltage, current, power, frequency and other key parameters, so that operation and maintenance personnel can quickly understand the equipment operation status.

[0030] Specifically, based on the above embodiment, the shielding layer adopts a composite shielding layer of aluminum foil and copper braiding.

[0031] It can be understood that aluminum foil can be in close contact with the ground layer, providing good grounding performance and reducing the introduction of common-mode noise, while copper braiding has lower grounding impedance, which can more effectively guide interference signals to the ground and reduce energy loss during signal transmission. The combination of aluminum foil and copper braiding optimizes the grounding performance and further reduces the impact of interference signals.

[0032] Please refer to Figure 3 To achieve the above purpose, the present application also provides a grounding system for solving communication interference of an integrated photovoltaic and storage device, which is applicable to the above-mentioned method for solving communication interference of an integrated photovoltaic and storage device, and includes the following steps: S1. Use the metal shielding layer of the communication network cable to obtain external radiation interference signals; S2, transmits the external radiation interference signal to the metal shell head of the communication network cable through the conductive material in the communication network cable; S3, using the metal shell head to transmit the external radiation interference signal to the metal shell network port on the PCB board of the DCDC cabinet and DCAC cabinet; S4. Use the metal shell network port on the PCB board to transmit the external radiation interference signal to the casing of the DCDC cabinet and the DCAC cabinet; S5, transmit the external communication interference signal to the ground wire through the grounding point on the casing; S6. Use the ground wire to transmit the external radiation interference signal to the ground, thereby effectively suppressing the interference signal.

[0033] It can be understood that external electromagnetic waves (such as radio waves, power supply noise, etc.) are radiated through space to the vicinity of the communication network cable. The metal shielding layer acts as a conductor and generates induced current or voltage under the action of the electromagnetic field, thereby capturing the external radiation interference signal; The induced current or voltage is conducted along the shielding layer through the conductive properties of the metal shielding layer. The shielding layer concentrates the scattered interference signals on the surface or inside of the shielding layer, forming a unified interference signal path.

[0034] The metal shielding layer is electrically connected to the metal shell head of the communication network cable through welding, crimping or conductive glue, and the interference signal is transmitted to the metal shell head of the network cable through the metal shielding layer; The metal shell network port on the cabinet PCB is connected to the housing of the DCDC cabinet and DCAC cabinet through conductive gaskets, conductive glue, or direct contact. The interference signal is transmitted to the cabinet housing through the metal shell of the cabinet network port. The cabinet casing is electrically connected to the ground wire through a grounding screw, grounding wire, or conductive glue, and the interference signal is conducted to the ground wire through the cabinet casing; The ground wire is electrically connected to the earth through a grounding electrode (grounding stake, grounding grid or buried conductor). The interference signal is transmitted to the earth through the ground wire and eventually dissipated.

[0035] In summary, the above settings, using single-ended grounding of the shield layer and a magnetic ring setting, can avoid common-mode noise introduced by ground loops and improve the stability of communication signals; effectively suppress the conduction and superposition of high-frequency noise; through separate grounding, the propagation of spatial radiation noise is reduced; through parallel settings and single-ended grounding of the shield layer, the overall stability of the system is improved, and the installation and maintenance process is simplified as a whole.

[0036] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, apparatus, article, or method comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, apparatus, article, or method. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, apparatus, article, or method comprising the element.

[0037] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A grounding system for solving communication interference of an integrated optical storage device, characterized in that: It includes a DCDC cabinet and a DCAC cabinet, wherein the DCDC cabinet and the DCAC cabinet are arranged in parallel; The input end of the DCDC cabinet is connected to a DC source, and the output end of the DCDC cabinet is connected to the DCAC cabinet via a communication network cable, wherein a magnetic ring and a shielding layer are provided on the communication network cable; Grounding points are respectively provided on the outer shells of the DCDC cabinet and the DCAC cabinet, each of the grounding points is correspondingly connected to a grounding electrode, and the grounding points are connected to the grounding electrodes through a ground wire.

2. A grounding system for solving communication interference of an integrated optical storage device according to claim 1, characterized in that: There are two DCDC cabinets, the two DCDC cabinets are respectively connected to different DC sources, and the two DCDC cabinets are arranged in parallel.

3. The grounding system for solving communication interference of an integrated optical storage device according to claim 1 is characterized in that: A heat shrink tube sleeve is provided on the magnetic ring.

4. A grounding system for solving communication interference of an integrated optical storage device according to claim 3, characterized in that: The heat shrink tube has a diameter of φ40 and a length of 35 mm.

5. The grounding system for solving communication interference of an integrated optical storage device according to claim 1 is characterized in that: The magnetic ring on the communication network cable is arranged close to one side of the DCDC cabinet.

6. A grounding system for solving communication interference of an integrated optical storage device according to claim 5, characterized in that: The DCDC cabinet is composed of several DCDC modules, the input end of each DCDC module is connected to an independent photovoltaic module, the output end of each DCDC module is connected in parallel to the same battery pack, and the several DCDC modules are connected by a communication line, a shielding layer is provided on the communication line, and the communication line is single-ended grounded.

7. The grounding system for solving communication interference of an integrated optical storage device according to claim 1, characterized in that: A PCB board is respectively provided inside the DCDC cabinet and the DCAC cabinet, and a network port is provided on the PCB board. The network port is a network port with a metal shell.

8. The grounding system for solving communication interference of an integrated optical storage device according to claim 7, characterized in that: It also includes a screen, which is provided on the DCAC cabinet and is connected to the communication interface of the DCAC via a data cable.

9. The grounding system for solving communication interference of an integrated optical storage device according to claim 1, characterized in that: The shielding layer is a composite shielding layer of aluminum foil and copper braiding.

10. A method for resolving communication interference in a photovoltaic and storage integrated device, applicable to a grounding system for resolving communication interference in a photovoltaic and storage integrated device as described in any one of claims 1 to 9, characterized in that: include: Use the metal shielding layer of the communication network cable to obtain external radiation interference signals; The external radiation interference signal is transmitted to the metal shell head of the communication network cable through the conductive material in the communication network cable; Use the metal shell head to transmit the external radiation interference signal through the metal shell head of the communication network cable to the metal shell network port on the PCB board of the DCDC cabinet and DCAC cabinet; Use the metal shell network port on the PCB board to transmit the external radiation interference signal to the casing of the DCDC cabinet and DCAC cabinet; Transmit external communication interference signals to the ground through the grounding point on the casing; The ground wire is used to transmit the external radiation interference signal to the ground, thereby effectively suppressing the interference signal.

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