A communication interface converter and photovoltaic protocol converter system

Abstract

This utility model discloses a communication interface converter and a photovoltaic protocol converter system, relating to the field of interface conversion. Multiple different types of input interfaces can be connected to the output interfaces of various types of photovoltaic inverters. The first output interface connects to the communication rod of the photovoltaic inverter without affecting its normal operation. The first output interface is of the same type as the input interface, requiring no change to the normal structure of the photovoltaic inverter. The second output interface is of the same type as the photovoltaic protocol converter and can be connected to it. Due to the presence of a signal transmission module, signals input from the input interface can be transmitted to the communication rod via the first output interface, and signals input from the input interface can also be transmitted to the photovoltaic protocol converter via the second output interface. This achieves connection between photovoltaic inverters with different interfaces and the photovoltaic protocol converter without affecting the normal communication operation of the photovoltaic inverter.

Description

Technical Field

[0001] This utility model relates to the field of interface conversion, and in particular to a communication interface converter and a photovoltaic protocol converter system. Background Technology

[0002] With the advancement of the "dual carbon" target, photovoltaic (PV) power generation, as the best green energy source, has developed rapidly, and more and more PV power generation equipment is being connected to the power system's distribution network. Due to the instability of PV power generation equipment output, the power system urgently needs to include it in its monitoring scope. However, because the industry has not established a communication standard for PV inverters, the communication interfaces and protocols of PV inverters from different manufacturers are different, especially the communication interfaces, which are complex and diverse, including RJ45, USB, aviation plugs, crimp terminals, etc. PV protocol converters are standard products developed by the State Grid Corporation of China, used to collect and monitor the operating status of PV inverters. However, the diversity of PV inverter communication interfaces is not conducive to engineering implementation and centralized management. Utility Model Content

[0003] The purpose of this invention is to provide a communication interface converter and photovoltaic protocol converter system. By setting multiple interfaces, the signal is transmitted from the input interface to two output interfaces, thereby realizing the interface conversion between the photovoltaic inverter and the photovoltaic protocol converter.

[0004] To solve the above technical problems, this utility model provides a communication interface converter, comprising:

[0005] Multiple input interfaces, each of which is connected to a photovoltaic inverter. The type of each input interface is the same as the type of the output interface of the connected photovoltaic inverter, but the types of each input interface are different.

[0006] Multiple first output interfaces are provided, each of which corresponds to one of the input interfaces and is of the same type. Each first output interface is connected to the communication rod of the photovoltaic inverter connected to the corresponding input interface, and is used to output the signal received by the input interface to the communication rod through itself. The types of each first output interface are different.

[0007] The second output interface is connected to the input terminal of the photovoltaic protocol converter. The type of the second output interface is the same as that of the input interface of the photovoltaic protocol converter, and it is used to output the signal received by the input interface through itself.

[0008] A signal transmission module, wherein a first end of the signal transmission module is connected to all the input interfaces, a second end of the signal transmission module is connected to all the first output interfaces, and a third end of the signal transmission module is connected to the second output interface, the signal transmission module being used to transmit the signal from the input port to the first output interface and the second output interface.

[0009] On the other hand, it also includes a first connecting line and a second connecting line;

[0010] The two ends of the first connecting line are respectively connected to the input interface and the photovoltaic inverter. The interface types at both ends of the first connecting line are the same as the types of the input interface and the output interface of the photovoltaic inverter. The first connecting line is used to connect the input port and the photovoltaic inverter.

[0011] The two ends of the second connecting line are respectively connected to the second output interface and the photovoltaic protocol converter. The interface types of the two ends of the second connecting line are the same as the input interface types of the second output interface and the photovoltaic protocol converter. The second connecting line is used to connect the second output interface and the photovoltaic protocol converter.

[0012] On the other hand, the first output interface and the connection port of the communication rod are structurally male and female paired.

[0013] On the other hand, when the first output interface is an RJ45 type interface, the input interface includes eight signal terminals;

[0014] The first signal terminal is the RS485-A signal output terminal, the second signal terminal is the RS485-B signal output terminal, the fifth and sixth signal terminals are the negative power supply signal output terminals, the seventh and eighth signal terminals are the positive power supply signal output terminals, and the remaining signal terminals are left floating.

[0015] On the other hand, the second output interface is an RJ45 type interface, and the second output interface includes eight signal terminals;

[0016] The first signal terminal is connected to the RS485-A signal of the photovoltaic inverter and photovoltaic protocol converter, the second signal terminal is connected to the RS485-B signal of the photovoltaic inverter and photovoltaic protocol converter, the fifth and sixth signal terminals are connected to the RS485-A signal of the communication rod, the seventh and eighth signal terminals are connected to the RS485-B signal of the communication rod, and the remaining signal terminals are left floating.

[0017] On the other hand, the input interface is a waterproof interface with a sealing ring or gasket made of elastic sealing material.

[0018] On the other hand, the signal transmission module includes multiple signal sequence adjustment modules, each corresponding to the input interface and the first output interface.

[0019] The first end of the signal sequence adjustment module is connected to the input interface, the second end of the signal sequence adjustment module is connected to the first output interface, and the third end of the signal sequence adjustment module is connected to the second output interface.

[0020] The signal sequence adjustment module is used to adjust the position of each signal input from the input interface and then output it to the first output port or the second output port.

[0021] On the other hand, each of the signal sequence adjustment modules includes multiple selection switches;

[0022] The first end of each selector switch serves as the first end of the signal sequence adjustment module, and is connected to an input signal. The second end of each selector switch is connected to the communication line or power line corresponding to itself.

[0023] The selector switch is used to output the input signal to the corresponding communication line or power line when it is closed.

[0024] To solve the above-mentioned technical problems, this utility model also provides a photovoltaic protocol converter system, including the above-mentioned communication interface converter, and also including an inverter and a photovoltaic protocol converter;

[0025] The input interface of the communication interface converter is connected to the output terminal of the inverter, the first output interface of the communication interface converter is connected to the communication rod of the inverter, and the second output interface of the communication interface converter is connected to the photovoltaic protocol converter.

[0026] On the other hand, the communication rod is also in communication connection with the photovoltaic protocol converter.

[0027] This utility model discloses a communication interface converter and a photovoltaic protocol converter system, relating to the field of interface conversion. Multiple different types of input interfaces can be connected to the output interfaces of various types of photovoltaic inverters. The first output interface connects to the communication rod of the photovoltaic inverter without affecting its normal operation. The first output interface is of the same type as the input interface, requiring no change to the normal structure of the photovoltaic inverter. The second output interface is of the same type as the photovoltaic protocol converter and can be connected to it. Due to the presence of a signal transmission module, signals input from the input interface can be transmitted to the communication rod via the first output interface, and signals input from the input interface can also be transmitted to the photovoltaic protocol converter via the second output interface. This achieves connection between photovoltaic inverters with different interfaces and the photovoltaic protocol converter without affecting the normal communication operation of the photovoltaic inverter. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a communication interface converter provided by this utility model;

[0030] Figure 2 A schematic diagram of another communication interface converter provided by this utility model;

[0031] Figure 3 A schematic diagram of the structure of a first output interface provided by this utility model;

[0032] Figure 4 A schematic diagram of the structure of a second output interface provided by this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of a signal sequence adjustment module provided by this utility model;

[0034] Figure 6 This is a schematic diagram of an interface relationship provided by the present invention. Detailed Implementation

[0035] The core of this utility model is to provide a communication interface converter and photovoltaic protocol converter system. By setting multiple interfaces, the signal is transmitted from the input interface to two output interfaces respectively, realizing the interface conversion between the photovoltaic inverter and the photovoltaic protocol converter.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Figure 1 This is a schematic diagram of a communication interface converter provided by the present invention. The communication interface converter includes:

[0038] Multiple input interfaces 1, each of which is connected to a photovoltaic inverter. The type of each input interface 1 is the same as the type of the output interface of the connected photovoltaic inverter, but the types of each input interface are different.

[0039] Multiple first output interfaces 2, each first output interface 2 corresponds to one input interface 1 and is of the same type. Each first output interface 2 is connected to the communication rod of the photovoltaic inverter connected to the corresponding input interface 1, and is used to output the signal received by the input interface 1 to the communication rod through itself. The types of each first output interface are different.

[0040] The second output interface 3 is connected to the input terminal of the photovoltaic protocol converter. The type of the second output interface 3 is the same as that of the input interface 1 of the photovoltaic protocol converter, and it is used to output the signal connected to the input interface 1 through itself.

[0041] The signal transmission module 4 has a first end connected to all input interfaces 1, a second end connected to all first output interfaces 2, and a third end connected to the second output interface 3. The signal transmission module is used to transmit the signal from the input port 1 to the first output interface 2 and the second output interface 3.

[0042] With the advancement of the "dual carbon" target, photovoltaic (PV) power generation, as the best green energy source, has developed rapidly, and more and more PV power generation equipment is being connected to the power system's distribution network. Due to the instability of PV power generation equipment output, the power system urgently needs to include it in its monitoring scope. However, because the industry has not established a communication standard for PV inverters, the communication interfaces and protocols of PV inverters from different manufacturers are different, especially the communication interfaces, which are complex and diverse, including RJ45, USB, aviation plugs, crimp terminals, etc. PV protocol converters are standard products developed by the State Grid Corporation of China, used to collect and monitor the operating status of PV inverters. However, the diversity of PV inverter communication interfaces is not conducive to engineering implementation and centralized management.

[0043] Input interface 1 is connected to the photovoltaic inverter via a photovoltaic inverter interface extension cable. Both ends of the cable have identical interface types, and the signals include: RS485-A signal, RS485-B signal, positive power signal, and negative power signal. Network cables connect the photovoltaic inverter, the photovoltaic protocol converter, and the communication rod. The signals include: RS485-A and RS485-B communication signals connected to the photovoltaic inverter and photovoltaic protocol converter, and RS485-A and RS485-B communication signals connected to the communication rod.

[0044] The communication interface converter of the photovoltaic inverter is directed towards the photovoltaic inverter. Multiple input interfaces 1 are arranged in parallel. Each type of interface is internally connected in series by signal lines. Considering the power supply for the communication rod, the first output interface 2, which is the same type as the photovoltaic inverter, is used to connect to the communication rod. Figure 1 Taking a photovoltaic inverter with an RJ45 interface as an example, the positive and negative power terminals in the photovoltaic inverter's interface extension harness supply power to the communication rod after passing through the photovoltaic inverter's communication interface converter.

[0045] This utility model discloses a communication interface converter, relating to the field of interface conversion. Multiple different types of input interfaces can be connected to the output interfaces of various types of photovoltaic (PV) inverters. The first output interface connects to the communication rod of the PV inverter without affecting its normal operation. The first output interface is of the same type as the input interface, requiring no change to the normal structure of the PV inverter. The second output interface is of the same type as the PV protocol converter, enabling connection with it. Due to the presence of a signal transmission module, signals input from the input interface can be transmitted to the communication rod via the first output interface, and signals input from the input interface can also be transmitted to the PV protocol converter via the second output interface. This achieves connection between PV inverters with different interfaces and the PV protocol converter without affecting the normal communication operation of the PV inverter.

[0046] Based on the above embodiments:

[0047] Figure 2 A schematic diagram of another communication interface converter provided by this utility model;

[0048] In some embodiments, a first connecting line and a second connecting line are also included;

[0049] The two ends of the first connecting line are respectively connected to the input interface and the photovoltaic inverter. The interface types at both ends of the first connecting line are the same as the types of the input interface and the output interface of the photovoltaic inverter. The first connecting line is used to connect the input port and the photovoltaic inverter.

[0050] The two ends of the second connecting line are respectively connected to the second output interface and the photovoltaic protocol converter. The interface types of the two ends of the second connecting line are the same as the input interface types of the second output interface and the photovoltaic protocol converter. The second connecting line is used to connect the second output interface and the photovoltaic protocol converter.

[0051] The first connection cable is an extension cable for the photovoltaic inverter interface, with identical interfaces at both ends. The second connection cable is a network cable with two sets of RJ45 interfaces at both ends. One set connects to the photovoltaic inverter and the photovoltaic protocol converter, and the other set connects to the communication device.

[0052] In some embodiments, the first output interface and the connection port of the communication rod are structurally paired as male and female.

[0053] The communication stick connects directly to the photovoltaic inverter's communication interface converter, eliminating the need for an external extension cable. This is because the connection between the photovoltaic inverter's communication interface converter and the communication stick is structurally male-female paired; for example, one end of the photovoltaic inverter's communication interface converter has a USB male connector, and the other end of the communication stick has a USB female connector.

[0054] In some embodiments, the input interface 1 includes at least two of the following: an RJ45 type interface, a crimp terminal type interface, a USB 2.0 type interface, a USB 3.0 type interface, and an aviation plug type interface.

[0055] like Figure 2 The interface types include: RJ45, crimp terminal, USB2.0, USB3.0, and M12 round connector for aviation plugs. The signals include: RS485-A, RS485-B, positive power supply, and negative power supply.

[0056] In some embodiments, the second output interface 3 is an RJ45 type interface.

[0057] The RJ45 interface is a type of information socket connector in cabling systems, commonly used for data transmission and is a standard configuration for Ethernet connections. RJ45 stands for Registered Jack-45. It consists of a plug and a socket; the plug has 8 recesses and 8 contacts, commonly known as 8P8C (8Position8Contact).

[0058] Figure 3 A schematic diagram of the structure of a first output interface provided by this utility model;

[0059] In some embodiments, when the input interface 1 is an RJ45 type interface, the input interface 1 includes eight signal terminals;

[0060] The first signal terminal is the RS485-A signal output terminal, the second signal terminal is the RS485-B signal output terminal, the fifth and sixth signal terminals are the negative power supply signal output terminals, the seventh and eighth signal terminals are the positive power supply signal output terminals, and the remaining signal terminals are left floating.

[0061] From right to left, these are the first to eighth signal terminals. The third and fourth terminals are left floating. The first and second terminals enable communication, i.e., RS485-A and RS485-B. The fifth and sixth terminals enable the transmission of the negative power supply, and the seventh and eighth terminals enable the transmission of the positive power supply.

[0062] Figure 4 A schematic diagram of the structure of a second output interface provided by this utility model;

[0063] In some embodiments, when the second output interface 3 is an RJ45 type interface, the second input interface 1 includes eight signal terminals;

[0064] The first signal terminal is connected to the RS485-A signal of the photovoltaic inverter and photovoltaic protocol converter, the second signal terminal is connected to the RS485-B signal of the photovoltaic inverter and photovoltaic protocol converter, the fifth and sixth signal terminals are connected to the RS485-A signal of the communication rod, the seventh and eighth signal terminals are connected to the RS485-B signal of the communication rod, and the remaining signal terminals are left floating.

[0065] From right to left, these are the first to eighth signal terminals. The third and fourth terminals are left floating. The first and second terminals enable communication with the inverter and photovoltaic protocol converter, i.e., RS485-A and RS485-B. The fifth and sixth terminals enable communication with the communication stick, i.e., RS485-A, and the seventh and eighth terminals enable communication with the communication stick, i.e., RS485-B.

[0066] In some embodiments, the input interface 1 is an interface made of waterproof material with a sealing ring or gasket made of elastic sealing material.

[0067] All interfaces with the photovoltaic inverter direction are waterproof interface components.

[0068] Furthermore, water can also be released in the following ways:

[0069] Sealing structure design: At the connection point between the plug and socket, sealing rings or gaskets made of elastic sealing materials such as rubber or silicone are typically used. When the plug and socket are mated, these seals are compressed to fill the connection gap, preventing water, dust, and other contaminants from entering through the connection.

[0070] Contact protection: The contacts (metal parts used for conducting electricity) are also surrounded by a corresponding sealing design to prevent water from seeping into the interior along the contacts. Some also undergo special treatments on the contacts, such as plating, to enhance corrosion resistance and also help improve waterproof performance.

[0071] Fit between the outer casing and the structure: The outer casing is generally made of sturdy materials with certain waterproof properties (such as metal, engineering plastics, etc.). The shape and structural design of the outer casing (such as threaded connection, snap-fit ​​connection, etc.) can further compress the seals to ensure tightness of the connection and reduce the channels for water to enter.

[0072] It should also be noted that, such as Figure 2 As shown, the photovoltaic inverter communication interface converter has the same communication interface form as the photovoltaic inverter and the communication interface form between it and the communication rod. For example, if the interface between the photovoltaic inverter and the photovoltaic inverter communication interface converter is USB 2.0, then the interface between the communication rod and the photovoltaic inverter communication interface converter is also USB 2.0. The interface signals RS485-A1 and RS485-B1 of the communication rod and the photovoltaic inverter communication interface converter are connected to the signals RS485-A1 and RS485-B1 at the interface between the photovoltaic inverter communication interface converter and the photovoltaic protocol converter. Different photovoltaic inverter interface extension cables only need to be configured for different engineering sites. The communication rod is directly plugged into the photovoltaic inverter communication interface converter without the need for an external extension cable. This is because the connection port between the photovoltaic inverter communication interface converter and the communication rod is structurally male and female paired; for example, one end of the photovoltaic inverter communication interface converter is a USB male connector, and the other end of the communication rod is a USB female connector.

[0073] Figure 5 This is a schematic diagram of the structure of a signal sequence adjustment module provided by this utility model;

[0074] In some embodiments, the signal transmission module 4 includes multiple signal sequence adjustment modules, and the signal sequence adjustment modules correspond one-to-one with the input interface 1 and the first output interface 2;

[0075] The first end of the signal sequence adjustment module is connected to the input interface 1, the second end of the signal sequence adjustment module is connected to the first output interface 2, and the third end of the signal sequence adjustment module is connected to the second output interface 3.

[0076] The signal sequence adjustment module is used to adjust the position of each signal input to input interface 1 and output it to the first output port or the second output port.

[0077] Considering that although the communication protocol is the same during transmission, the order of the four signals may be different, a signal order adjustment module is needed to adjust the order of the signals.

[0078] In some embodiments, each signal sequence adjustment module includes multiple selection switches;

[0079] The first end of each selector switch serves as the first end of the signal sequence adjustment module, and is connected to an input signal. The second end of each selector switch is connected to the communication line or power line corresponding to itself.

[0080] The selector switch is used to output the input signal to the corresponding communication line or power line when it is closed.

[0081] Specifically, when there are four input signals at input interface 1, each signal sequence adjustment module includes four sets of first conversion switches, second conversion switches, third conversion switches and fourth conversion switches;

[0082] The first terminals of the first, second, third, and fourth switches of each signal sequence adjustment module serve as the first terminals of each signal sequence adjustment module, and are connected to one input signal. The second terminal of the first switch of each signal sequence adjustment module is connected to the RS485-A signal output terminal, the second terminal of the second switch is connected to the RS485-B signal output terminal, the second terminal of the third switch is connected to the negative power supply signal output terminal, and the second terminal of the fourth switch is connected to the positive power supply signal output terminal.

[0083] The first switch is used to output the RS485-A signal when closed, the second switch is used to output the RS485-B signal when closed, the third switch is used to output the negative power supply signal when closed, and the fourth switch is used to output the positive power supply signal when closed.

[0084] The photovoltaic inverter communication interface converter provides interfaces to the photovoltaic inverter. Different interface types utilize multiplexing, and each interface employs a switch-like mechanism (SPDT) to manually switch the signal sequence from the inverter interface to a sequence suitable for the photovoltaic protocol converter. The implementation method is as follows: Figure 5 The interface has four signal lines, each connected to one of four selector switches. The switch to be connected is selected based on the signal sequence of the inverter interface.

[0085] Specifically, each input interface 1 and the first output interface 2 includes 4×4 switches. Each input line is connected to four switches, and the four switches will only be closed on the corresponding signal line. For example, if the current signal line is the positive power supply, then... Figure 5 The second switch from left to right will close, while the remaining three will open, connecting only the corresponding signals for output, thus achieving the purpose of sequential signal conversion.

[0086] This application also provides a photovoltaic protocol converter system, including the above-mentioned communication interface converter, and further including an inverter and a photovoltaic protocol converter;

[0087] The input interface 1 of the communication interface converter is connected to the output terminal of the inverter, the first output interface 2 of the communication interface converter is connected to the communication rod of the inverter, and the second output interface 3 of the communication interface converter is connected to the photovoltaic protocol converter.

[0088] In some embodiments, the communication rod is also in communication connection with a photovoltaic protocol converter.

[0089] Connection relationships such as Figure 6 As shown, the positive and negative terminals of the interface signal power supply of the communication rod and the photovoltaic inverter communication interface converter are connected to the positive and negative terminals of the signal power supply at the interface between the photovoltaic inverter communication interface converter and the photovoltaic inverter.

[0090] The photovoltaic protocol converter system provided in this application is described in the above embodiments and will not be repeated here.

[0091] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0092] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes said element.

[0093] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A communication interface converter, characterized in that, include: Multiple input interfaces, each of which is connected to a photovoltaic inverter. The type of each input interface is the same as the type of the output interface of the connected photovoltaic inverter, but the types of each input interface are different. Multiple first output interfaces are provided, each of which corresponds to one of the input interfaces and is of the same type. Each first output interface is connected to the communication rod of the photovoltaic inverter connected to the corresponding input interface, and is used to output the signal received by the input interface to the communication rod through itself. The types of each first output interface are different. The second output interface is connected to the input terminal of the photovoltaic protocol converter. The type of the second output interface is the same as that of the input interface of the photovoltaic protocol converter, and it is used to output the signal received by the input interface through itself. A signal transmission module, wherein a first end of the signal transmission module is connected to all the input interfaces, a second end of the signal transmission module is connected to all the first output interfaces, and a third end of the signal transmission module is connected to the second output interface, and the signal transmission module is used to transmit the signals of the input interfaces to the first output interfaces and the second output interfaces.

2. The communication interface converter as described in claim 1, characterized in that, It also includes a first connecting line and a second connecting line; The two ends of the first connecting line are respectively connected to the input interface and the photovoltaic inverter. The interface types at both ends of the first connecting line are the same as the types of the input interface and the output interface of the photovoltaic inverter. The first connecting line is used to connect the input interface and the photovoltaic inverter. The two ends of the second connecting line are respectively connected to the second output interface and the photovoltaic protocol converter. The interface types of the two ends of the second connecting line are the same as the input interface types of the second output interface and the photovoltaic protocol converter. The second connecting line is used to connect the second output interface and the photovoltaic protocol converter.

3. The communication interface converter as described in claim 1, characterized in that, The first output interface and the connection port of the communication rod are structurally paired as male and female.

4. The communication interface converter as described in claim 1, characterized in that, When the first output interface is an RJ45 type interface, the input interface includes eight signal terminals; The first signal terminal is the RS485-A signal output terminal, the second signal terminal is the RS485-B signal output terminal, the fifth and sixth signal terminals are the negative power supply signal output terminals, the seventh and eighth signal terminals are the positive power supply signal output terminals, and the remaining signal terminals are left floating.

5. The communication interface converter as described in claim 1, characterized in that, The second output interface is an RJ45 type interface, and the second output interface includes eight signal terminals; The first signal terminal is connected to the RS485-A signal of the photovoltaic inverter and photovoltaic protocol converter, the second signal terminal is connected to the RS485-B signal of the photovoltaic inverter and photovoltaic protocol converter, the fifth and sixth signal terminals are connected to the RS485-A signal of the communication rod, the seventh and eighth signal terminals are connected to the RS485-B signal of the communication rod, and the remaining signal terminals are left floating.

6. The communication interface converter as described in claim 1, characterized in that, The input interface is a waterproof interface with a sealing ring or gasket made of elastic sealing material.

7. The communication interface converter according to any one of claims 1 to 6, characterized in that, The signal transmission module includes multiple signal sequence adjustment modules, each corresponding to one of the input interface and the first output interface. The first end of the signal sequence adjustment module is connected to the input interface, the second end of the signal sequence adjustment module is connected to the first output interface, and the third end of the signal sequence adjustment module is connected to the second output interface. The signal sequence adjustment module is used to adjust the position of each signal input by the input interface and then output it to the first output interface or the second output interface.

8. The communication interface converter as described in claim 7, characterized in that, Each of the signal sequence adjustment modules includes multiple selection switches; The first end of each selector switch serves as the first end of the signal sequence adjustment module, and is connected to an input signal. The second end of each selector switch is connected to the communication line or power line corresponding to itself. The selector switch is used to output the input signal to the corresponding communication line or power line when it is closed.

9. A photovoltaic protocol converter system, characterized in that, Includes the communication interface converter as described in any one of claims 1 to 8, and further includes an inverter and a photovoltaic protocol converter; The input interface of the communication interface converter is connected to the output terminal of the inverter, the first output interface of the communication interface converter is connected to the communication rod of the inverter, and the second output interface of the communication interface converter is connected to the photovoltaic protocol converter.

10. The photovoltaic protocol converter system as described in claim 9, characterized in that, The communication rod is also communicatively connected to the photovoltaic protocol converter.

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