Communication module switching structure and inverter

Abstract

The utility model discloses a communication module switching structure and an inverter. Wherein the inverter comprises a machine shell and a control panel arranged in the machine shell, and the communication module switching structure comprises a switching part used for being fixedly connected with the machine shell and a switching wire used for being connected with the control panel. Specifically, the switching part is arranged on the machine shell so as to be at least used for being connected with an external cable, and a filtering unit is arranged on the switching part; the patch cord is arranged in the machine shell and connected between the switching part and the control panel. The patch cord is at least used for transmitting the electric signals output by the control panel to the switching part. According to the invention, the problem of low working reliability of the inverter caused by the fact that the overall external radiation emission of the inverter in the prior art exceeds the standard can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment, and in particular to a communication module switching structure and an inverter. Background Art

[0002] Inverters, as energy conversion devices in renewable energy power generation systems, are widely used in a variety of applications, including solar power systems, vehicle power supplies, and home and office power supplies. Inverter communication modules, serving as signal receiving modules, typically come in two types: LAN modules and WIFI modules. LAN modules are wired, while WIFI modules are wireless. Depending on the inverter's specific development and usage, different modules need to be selected as communication modules.

[0003] Existing inverters usually use a combination of WIFI module + LAN module as a communication module. Compared with the structure of the inverter using only WIFI module, the inverter using WIFI module + LAN module requires a longer network cable to be connected to the outside of the communication module to connect to other devices (such as computers).

[0004] However, due to the large electromagnetic interference inside the inverter, the electromagnetic interference will be coupled to the WIFI module adapter cable inside the inverter, thereby generating a strong high-frequency common-mode current. This high-frequency common-mode current will be transmitted to the external network cable and emitted to the outside through the network cable, eventually causing the electromagnetic radiation interference of the inverter to exceed the standard, which will have an adverse impact on the reliability of the inverter. Utility Model Content

[0005] The main purpose of this application is to provide a communication module switching structure and an inverter to solve the problem in the prior art that the overall external radiation emission of the inverter exceeds the standard, resulting in low reliability of the inverter operation.

[0006] According to one aspect of the present application, a communication module adapter structure is provided. The communication module adapter structure is used at least for an inverter. The inverter includes a housing and a control board disposed inside the housing. The communication module adapter structure includes:

[0007] a connecting portion, the connecting portion being provided on the housing for at least connecting to an external cable, and the connecting portion being provided with a filtering unit;

[0008] The adapter wire is arranged inside the housing and connected between the adapter part and the control board. The adapter wire is at least used to transmit the electrical signal output by the control board to the adapter part.

[0009] Furthermore, the adapter includes:

[0010] A shell, the shell being arranged on the housing and having a mounting cavity;

[0011] a plug connector, the plug connector being arranged in the installation cavity and being used at least for connecting to the external cable;

[0012] A circuit board is arranged in the installation cavity and connected between the plug connector and the adapter cable, and the filter unit is arranged on the circuit board.

[0013] Furthermore, an input interface and an output interface are provided on the circuit board, the input interface is electrically connected to the adapter cable, the output interface is electrically connected to the plug connector, and the input interface, the filtering unit and the output interface are electrically connected in sequence.

[0014] Furthermore, the input interface and the output interface each include at least one group, each group of the input interface and each group of the output interface are connected in a one-to-one correspondence, and the filtering unit is provided between each group of the input interface and each group of the output interface.

[0015] Furthermore, the adapter portion includes a circuit board, and a grounding wire is provided between the circuit board and the housing.

[0016] Furthermore, the filtering unit includes a chip filter capacitor.

[0017] Furthermore, a shielding portion is provided around the outer surface of the adapter cable.

[0018] Furthermore, the shielding portion includes a metal braided shielding layer.

[0019] Furthermore, an insulating layer is provided on the outer surface of the connection point between the adapter portion and the adapter line.

[0020] Furthermore, a protective cover is provided on the adapter portion, and the protective cover is detachably covered on the plug connector of the adapter portion.

[0021] On the other hand, the present application also provides an inverter, which includes the above-mentioned communication module switching structure.

[0022] In this application, the adapter provided on the inverter housing can be used to connect to the cable external to the LAN module, so that the inverter can be connected to a computer or router and other smart energy devices through the cable; and the filter unit can perform a filtering function to eliminate clutter signals. When the inverter is actually used, because the adapter cable in this application is connected between the adapter and the control board, and the adapter is connected to the external cable, when the control board starts to output an electrical signal, the electrical signal will be transmitted to the adapter via the adapter cable, and then transmitted to the external cable via the adapter, and then transmitted to the computer or router and other smart energy devices connected to the external cable. During this process, due to the large electromagnetic interference inside the inverter, the electromagnetic interference will be coupled to the adapter cable to generate a strong high-frequency common-mode current. When the high-frequency common-mode current is transmitted to the external cable, it will be emitted to the outside through the cable, resulting in excessive electromagnetic radiation interference. For this reason, the present application is provided with a filtering unit on the adapter. The presence of the filtering unit can filter the input high-frequency common-mode current and eliminate the noise signal in the input high-frequency common-mode current, thereby reducing the output of the high-frequency common-mode current transmitted to the external cable, thereby reducing the emission of electromagnetic interference by the external cable, preventing excessive electromagnetic radiation interference outside the inverter, and effectively improving the reliability of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of the communication module switching structure disclosed in an embodiment of the present application;

[0025] Figure 2 An exploded view of the communication module transfer structure disclosed in an embodiment of the present application;

[0026] Figure 3 A schematic structural diagram of the adapter disclosed in an embodiment of the present application;

[0027] Figure 4 A schematic structural diagram of a transfer portion with a protective cover disclosed in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the structure of the circuit board disclosed in the embodiment of this application;

[0029] Figure 6 This is a structural diagram of the connection between the inverter disclosed in the embodiment of the present application and an external device.

[0030] The above drawings include the following reference numerals:

[0031] 10. Casing; 11. Control board; 20. Adapter; 21. Shell; 211. Buckle; 22. Plug connector; 23. Circuit board; 231. Filter unit; 232. Input interface; 233. Output interface; 30. Adapter cable; 40. Cable; 50. Ground wire; 60. Shielding part; 70. Protective cover; 71. Slot; 72. Connecting part. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary, not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0035] As mentioned in the background technology, when the existing inverter uses a combination of a WIFI module + a LAN module as a communication module, a longer network cable needs to be connected to the outside of the communication module to connect the inverter and other devices (such as a computer, etc.). However, due to the large electromagnetic interference inside the inverter, the electromagnetic interference will be coupled to the WIFI module adapter cable inside the inverter, thereby generating a strong high-frequency common-mode current. This high-frequency common-mode current will be transmitted to the external network cable and emitted to the outside through the network cable, causing the electromagnetic radiation interference of the inverter to exceed the standard, thereby adversely affecting the reliability of the inverter. To this end, the inventors of this application have designed a new inverter that can solve the problem of the inverter's overall external radiation emission exceeding the standard in the prior art, resulting in low reliability of the inverter. The inverter of this application will be described in detail below with reference to the accompanying drawings.

[0036] See also Figures 1 to 6 As shown, according to an embodiment of the present application, a communication module adapter structure is provided that is at least applied to an inverter, wherein the inverter includes a housing 10 and a control board 11 arranged inside the housing 10, and the communication module adapter structure includes an adapter part 20 for fixedly connecting to the housing 10 and an adapter line 30 for connecting to the control board 11.

[0037] Specifically, the adapter part 20 is arranged on the housing 10 for at least connecting to an external cable 40, and a filtering unit 231 is provided on the adapter part 20; the adapter line 30 is arranged inside the housing 10 and connected between the adapter part 20 and the control board 11, and the adapter line 30 is at least used to transmit the electrical signal output by the control board 11 to the adapter part 20.

[0038] In this embodiment, the adapter 20 provided on the inverter housing 10 can be connected to a cable 40 external to the LAN module, allowing the inverter to be connected to a smart energy device such as a computer or router via this cable 40. The filter unit 231 also performs filtering to eliminate clutter signals. In actual use of this inverter, since the adapter cable 30 in this embodiment is connected between the adapter 20 and the control board 11, and the adapter 20 is connected to the external cable 40, when the control board 11 begins to output an electrical signal, the electrical signal is transmitted via the adapter cable 30 to the adapter 20, and then transmitted via the adapter 20 to the external cable 40, and then transmitted to the smart energy device such as the computer or router connected to the external cable 40. During this process, due to the large electromagnetic interference inside the inverter, the electromagnetic interference will be coupled to the adapter cable 30 to generate a strong high-frequency common-mode current. When the high-frequency common-mode current is transmitted to the external cable 40, it will be emitted to the outside through the cable 40, resulting in excessive electromagnetic radiation interference. For this reason, this embodiment is provided with a filter unit 231 on the adapter 20. The presence of the filter unit 231 can filter the input high-frequency common-mode current and eliminate the clutter signal in the input high-frequency common-mode current, thereby reducing the output of the high-frequency common-mode current transmitted to the external cable 40, thereby reducing the emission of electromagnetic interference by the external cable 40, preventing excessive electromagnetic radiation interference outside the inverter, and effectively improving the reliability of the inverter.

[0039] Further, see Figures 2 to 3 As shown, the adapter 20 in this embodiment includes a housing 21, a plug connector 22, and a circuit board 23. The housing 21 is mounted on the housing 10 and has a mounting cavity (not shown in the figures); the plug connector 22 is mounted within the mounting cavity for connection to at least an external cable 40; the circuit board 23 is mounted within the mounting cavity and connected between the plug connector 22 and the adapter cable 30. A filter unit 231 is mounted on the circuit board 23. For example, the "circuit board 23" in this embodiment includes a PCB (printed circuit board).

[0040] Specifically, in this embodiment, after both the plug connector 22 and the circuit board 23 are installed within the mounting cavity of the housing 21, the housing 21 is then mounted on the inverter casing 10. This reduces the overall size of the adapter 20, improving the inverter's space utilization to a certain extent. The housing 21 protects the plug connector 22 and the circuit board 23. The plug connector 22 facilitates connection with the external cable 40, making it easier for users to plug and unplug the cable 40 and simplifying user operations. The circuit board 23 performs signal conversion, and the filter unit 231 on the circuit board 23 eliminates noise and clutter in the signal. That is to say, when actually using the inverter, the user can plug the cable 40 connected to the smart energy device such as a computer or router into the plug connector 22 and then turn on the inverter. The electrical signal in the inverter is transmitted through the control board 11 and transmitted to the circuit board 23 through the adapter cable 30. The filter unit 231 on the circuit board 23 filters the electrical signal and then transmits the electrical signal to the plug connector 22. It is then transmitted to the external cable 40 via the plug connector 22 and finally transmitted to the smart energy device such as a computer or router through the cable 40. The structure is simple and the operation is convenient and fast.

[0041] It should be noted that the "plug connector 22" in this embodiment comprises a USB 3.0 connector. Specifically, the USB 3.0 connector has a high transmission rate, facilitating efficient data transmission, thereby shortening data transmission time and effectively ensuring the normal operation of the Wi-Fi + LAN module. Of course, in other embodiments of the present application, the plug connector 22 may also include an HDMI connector or a Type-C connector, etc. As long as these other variations are based on the concept of this application, they are within the scope of protection of this application.

[0042] Further, see Figure 5 As shown, the circuit board 23 in this embodiment is provided with an input interface 232 and an output interface 233. The input interface 232 is electrically connected to the adapter cable 30, and the output interface 233 is electrically connected to the plug connector 22. The input interface 232, the filter unit 231, and the output interface 233 are electrically connected in sequence. Specifically, since the adapter cable 30 is connected between the circuit board 23 and the control board 11, when the electrical signal of the adapter cable 30 is transmitted to the circuit board 23, the electrical signal will enter the circuit board 23 from the input interface 232 and be filtered by the filter unit 231 to reduce the output of high-frequency common-mode current, and then the electrical signal will be transmitted to the plug connector 22 via the output interface 233. In this process, since the input interface 232, the filter unit 231, and the output interface 233 are all located on the circuit board 23 and are electrically connected in sequence, the attenuation of the signal during transmission and the complex structure of the signal transmission path can be reduced, thereby improving the integrity and transmission efficiency of the signal.

[0043] Further, see Figure 5As shown, the input interface 232 and the output interface 233 in this embodiment each include at least one group, each group of input interfaces 232 and each group of output interfaces 233 are connected in a one-to-one correspondence, and a filtering unit 231 is provided between each group of input interfaces 232 and each group of output interfaces 233. Specifically, by providing multiple groups of input interfaces 232 and output interfaces 233, the circuit board 23 can process multiple signals simultaneously, significantly improving data processing capabilities. The provision of a filtering unit 231 between each group of input interfaces 232 and output interfaces 233 enables each filtering unit 231 to operate independently to filter different signals, improving signal processing efficiency, thereby reducing the output of high-frequency common-mode current, preventing excessive electromagnetic radiation interference from outside the inverter, enhancing the inverter's anti-interference capability, and effectively ensuring the reliability of the inverter during operation.

[0044] Optionally, the "input interface 232" and the "output interface 233" in this embodiment can be respectively set as one group, or can be set as two groups or more than two groups. Figure 5 FIG. 2 shows a case where both the input interface 232 and the output interface 233 are configured as three groups.

[0045] Furthermore, in order to improve the filtering effect of the filtering unit 231, see Figures 1 to 2 As shown, the adapter 20 in this embodiment includes a circuit board 23, with a grounding wire 50 disposed between the circuit board 23 and the housing 10. This shortens the length of the grounding wire 50 of the filter unit 231, thereby reducing the parasitic inductance of the filter unit 231. This in turn improves the filtering effect of the filter capacitor, allowing more high-frequency common-mode current to be absorbed by the capacitor, thereby reducing the output of high-frequency common-mode current and the amount of electromagnetic interference emitted by the external cable 40, preventing excessive electromagnetic radiation interference outside the inverter and effectively improving the reliability of the inverter.

[0046] Furthermore, the filter unit 231 in this embodiment includes a chip filter capacitor. Specifically, due to the small size, light weight, long service life, and excellent high-frequency harmonic filtering performance of the chip filter capacitor, when mounted on the circuit board 23, the chip filter capacitor can absorb more high-frequency common-mode current, thereby reducing the output of high-frequency common-mode current transmitted from the adapter 20 to the external cable 40. This in turn reduces the amount of electromagnetic interference emitted by the external cable 40, preventing excessive electromagnetic radiation interference outside the inverter.

[0047] Furthermore, in order to prevent the adapter cable 30 from being affected by electromagnetic interference, see Figures 1 to 2As shown, the outer surface of the patch cable 30 in this embodiment is surrounded by a shielding portion 60. Specifically, the provision of the shielding portion 60 can effectively reduce the interference of external electromagnetic interference on the signal transmitted by the patch cable 30, so that the patch cable 30 can still maintain a stable working state in the complex electromagnetic environment inside the inverter, thereby ensuring normal data transmission.

[0048] Furthermore, the shielding portion 60 in this embodiment includes a braided metal shielding layer. Specifically, the braided metal shielding layer is woven from high-density metal wires, exhibiting excellent electrical conductivity and electromagnetic interference resistance, and capable of significantly reflecting and absorbing electromagnetic interference from the external environment. For example, the braided metal shielding layer in this embodiment includes an aluminum foil braided shielding layer or a copper foil braided shielding layer.

[0049] Furthermore, the outer surface of the connection between the adapter part 20 and the adapter line 30 in this embodiment is provided with an insulating layer (not shown in the drawings). In this way, electrical short circuits can be prevented and the safety of the inverter can be improved. Specifically, the insulating layer in this embodiment includes a potting glue layer. The setting of the potting glue layer can wrap the electrical connection of the circuit board 23 and the adapter line 30 to achieve a waterproof and moisture-proof effect, thereby preventing the filter unit 231 on the circuit board 23 from being damaged due to moisture, effectively improving the service life of the circuit board 23 and reducing maintenance costs. Exemplarily, the potting glue layer in this embodiment is formed by potting with waterproof AB glue.

[0050] Further, see Figures 1 to 2 as well as Figure 4 As shown, the adapter 20 in this embodiment is provided with a protective cover 70, which is removably mounted on the plug connector 22 of the adapter 20. Specifically, the protective cover 70 protects the plug connector 22. It not only effectively blocks dust and dirt from entering the plug connector 22, preventing poor contact caused by the accumulation of impurities, but also provides necessary waterproof protection for the plug connector 22 in humid environments, reducing the risk of short circuits caused by moisture erosion and, to a certain extent, extending the service life of the inverter. Furthermore, the protective cover 70 in this embodiment is removably mounted on the plug connector 22. Therefore, when the plug connector 22 is needed, it only needs to be removed, resulting in a simple structure and convenient and quick operation.

[0051] Specifically, see Figures 1 to 2 as well as Figure 4 As shown, the protective cover 70 and the adapter 20 in this embodiment are connected via a connecting portion 72 to prevent the protective cover 70 from falling off the adapter 20 .

[0052] Further, see Figure 4As shown, in this embodiment, one of the protective cover 70 and the housing 21 of the adapter 20 is provided with a buckle 211, and the other is provided with a slot 71 adapted to the buckle 211. That is to say, in this embodiment, the buckle 211 can be provided on the protective cover 70 and the slot 71 can be provided on the housing 21, or the slot 71 can be provided on the protective cover 70 and the buckle 211 can be provided on the housing 21. Figure 4 The figure shows a case where the protective cover 70 is provided with a slot 71 and the housing 21 is provided with a buckle 211. This facilitates installation and removal of the protective cover 70, and the cooperation between the buckle 211 and the slot 71 ensures a more stable connection between the protective cover 70 and the housing 21, reducing the risk of damage due to looseness.

[0053] In combination with the above-mentioned embodiments, it can be known that the present application can process high-frequency common-mode current by providing a filter unit 231 on the circuit board 23, thereby reducing the output of high-frequency common-mode current transmitted from the adapter 20 to the external cable 40, thereby reducing the emission of electromagnetic interference by the external cable 40, and preventing excessive electromagnetic radiation interference outside the inverter. At the same time, the circuit board 23 of the present application is connected to the housing 10 through a grounding wire 50, which can shorten the length of the grounding wire 50 of the filter unit 231, thereby reducing the parasitic inductance of the filter unit 231 and effectively improving the filtering effect of the filter unit 231. In addition, the present application is provided with a shielding portion 60 around the outer periphery of the adapter line 30, which can reduce the interference of external electromagnetic interference on the signal transmitted by the adapter line 30, and effectively ensure the normal transmission of data.

[0054] On the other hand, an embodiment of the present application further provides an inverter, which includes the aforementioned communication module switching structure. Therefore, the inverter includes all the technical effects of the aforementioned communication module switching structure. Since the technical effects of the communication module switching structure have been described in detail above, they will not be repeated here.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0057] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A communication module transfer structure, the communication module transfer structure being used at least for an inverter, the inverter comprising a housing (10) and a control board (11) arranged inside the housing (10), characterized in that: The communication module switching structure includes: A connecting portion (20), the connecting portion (20) being arranged on the housing (10) for at least connecting to an external cable (40), and a filtering unit (231) being arranged on the connecting portion (20); An adapter line (30) is arranged inside the housing (10) and connected between the adapter portion (20) and the control board (11). The adapter line (30) is at least used to transmit the electrical signal output by the control board (11) to the adapter portion (20).

2. The communication module switching structure according to claim 1, characterized in that: The adapter (20) comprises: A housing (21), the housing (21) being disposed on the casing (10), the housing (21) having a mounting cavity; a plug connector (22), the plug connector (22) being disposed in the mounting cavity and being used at least for connecting to the external cable (40); A circuit board (23) is provided in the installation cavity and connected between the plug connector (22) and the adapter cable (30), and the filter unit (231) is provided on the circuit board (23).

3. The communication module switching structure according to claim 2, characterized in that: An input interface (232) and an output interface (233) are provided on the circuit board (23); the input interface (232) is electrically connected to the adapter cable (30); the output interface (233) is electrically connected to the plug connector (22); and the input interface (232), the filtering unit (231), and the output interface (233) are electrically connected in sequence.

4. The communication module switching structure according to claim 3, characterized in that: The input interface (232) and the output interface (233) each include at least one group, each group of the input interface (232) and each group of the output interface (233) are connected in a one-to-one correspondence, and the filtering unit (231) is provided between each group of the input interface (232) and each group of the output interface (233).

5. The communication module switching structure according to claim 1, characterized in that: The adapter (20) includes a circuit board (23), and a grounding wire (50) is provided between the circuit board (23) and the housing (10).

6. The communication module switching structure according to any one of claims 1 to 5, characterized in that: The filtering unit (231) includes a chip filter capacitor.

7. The communication module switching structure according to any one of claims 1 to 5, characterized in that: A shielding portion (60) is provided around the outer surface of the adapter cable (30).

8. The communication module switching structure according to claim 7, characterized in that: The shielding portion (60) comprises a metal braided shielding layer.

9. The communication module switching structure according to any one of claims 1 to 5, characterized in that: An insulating layer is provided on the outer surface of the connection point between the adapter portion (20) and the adapter line (30).

10. The communication module switching structure according to any one of claims 1 to 5, characterized in that: A protective cover (70) is provided on the adapter part (20), and the protective cover (70) is detachably covered on the plug connector (22) of the adapter part (20).

11. An inverter, characterized in that: The inverter includes the communication module switching structure according to any one of claims 1 to 10.

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