Power line carrier module for photovoltaic inverter communication

Abstract

The invention relates to a power carrier module for photovoltaic inverter communication. The protection box is additionally arranged for the power line carrier module, the penetration pipe arranged on the protection box is matched with the two sealing gaskets and the locking nuts, the protection box can be installed on the photovoltaic inverter shell, during installation, only a round hole needs to be formed in the proper position of the photovoltaic inverter shell, and then hanging of the protection box can be completed; the mounting state is stable, the sealing performance is good, the normal function of the photovoltaic inverter is not affected, and the connecting line of the power line carrier module can extend into the photovoltaic inverter shell through the penetrating pipe, so that the adaptive installation of the photovoltaic inverter and the power line carrier module is facilitated, the transformation of the photovoltaic inverter is simpler, and different transformation requirements are met. And a mounting plate and a heat dissipation frame are designed in the protection box, so that the power line carrier module is more convenient to mount, meanwhile, the heat dissipation requirement of the power line carrier module is ensured, and the applicability and safety of the power line carrier module are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power carrier communication, and in particular to a power carrier module for photovoltaic inverter communication. Background Art

[0002] As a highly efficient and pollution-free new energy, solar energy has become an important part of today's energy structure. Photovoltaic grid-connected power generation technology has become the mainstream of solar photovoltaic applications. Since small and medium-sized inverters themselves have low power, they are more used in distributed solar power generation systems in microgrids. As a node in a microgrid, it will be distributed in a large number and over a wide range in a certain area. During the operation of photovoltaic power generation equipment, it is necessary to understand the status of the controller in real time, such as the current working status of the inverter, the maximum power point tracking of the solar panel, and the current output power / voltage / current and other data that need to be monitored.

[0003] At present, the most common communication method is through wireless (RF) or RS485 technology. First of all, wireless communication technology is limited by the transmission distance and has low reliability; RS485 communication technology requires the laying of special lines, which will increase the cost of networking. The power carrier communication technology uses the existing power lines for data communication and transmits analog or digital signals at high speed through carriers. The power carrier module is a single-phase power line communication modem that uses the power grid to transmit data signals. The carrier module converter provides a very simple way for mutual control and data exchange between various electronic products, allowing products to be easily and quickly upgraded to power line products, thereby saving costs, being easy to use, and having higher communication reliability.

[0004] In order to realize the power carrier communication of the photovoltaic inverter, it is necessary to set a power carrier module in the photovoltaic inverter. At present, when the photovoltaic inverter is modified, the power carrier module needs to be fixed in the photovoltaic inverter box by screws. Due to the presence of other components in the photovoltaic inverter box, the reserved installation space is limited. Centralized installation will cause mutual interference between components and cannot be universally installed, making the modification and installation process very difficult. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention discloses a power carrier module for photovoltaic inverter communication. The technical solution adopted is that the top surface of the protection box is open and a sealing cover is installed in cooperation therewith. The sealing cover is fixedly connected to the protection box by screws. Support feet are installed at the four corners of the bottom surface of the protection box. The support feet are suction cup feet and are rotatably connected to the bottom of the protection box by ball hinges, so that the support feet can be universally rotated to adjust the angle and fixed to the photovoltaic inverter housing to be installed by suction through the suction cup, thereby supporting and fixing the protection box. A through-tube is connected to the middle part of the bottom surface of the protection box, and a first sealing gasket and a second sealing gasket are inserted into the through-tube. The circumferential wall of the through-tube is opened It is provided with a thread and a locking nut is installed in conjunction with the thread. The first sealing gasket and the second sealing gasket are both made of rubber material. A hole is opened on the housing of the photovoltaic inverter where the power carrier module needs to be installed. After the through-tube is connected to the photovoltaic inverter housing, the first sealing gasket and the second sealing gasket are respectively located on the inner and outer sides of the photovoltaic inverter housing, and the first sealing gasket and the second sealing gasket are clamped on the photovoltaic inverter housing by tightening the locking nut, so that the protective box is fixedly installed on the photovoltaic inverter housing, and fixed with the help of the support feet, so that the installation of the protective box is more stable, and the first sealing gasket and the second sealing gasket can seal the opening of the photovoltaic inverter housing during installation.

[0006] A heat sink is laid on the bottom surface of the inner cavity of the protection box, and both ends of the heat sink are open and the openings are both located on the outside of the protection box. A mounting plate is fixedly connected to the bottom surface of the inner cavity of the protection box by screws, and the bottom of the mounting plate is attached to the upper surface of the heat sink, and the upper surface of the mounting plate is fixedly connected to the power carrier module body by screws. The connecting wire of the power carrier module body passes through the through-tube, so that the connecting wire can extend from the through-tube into the inside of the photovoltaic inverter housing, which is convenient for connection with the photovoltaic inverter.

[0007] As a preferred solution of the present invention, the heat dissipation rack includes heat dissipation pipes evenly spaced apart, the heat dissipation pipes are made of copper pipes and have good thermal conductivity, both ends of the heat dissipation pipes are fixed by air inlet slots, the heat dissipation pipes are connected to the air inlet slots, the heat dissipation pipes are arranged at the bottom of the inner cavity of the protective box, the air inlet slots are trumpet-shaped and are located outside the protective box, and the heat dissipation pipes are sealed and connected to the penetration part of the side wall of the protective box.

[0008] As a preferred solution of the present invention, the mounting plate is a metal plate, and buckles are fixedly connected to the edges thereof. Mounting holes and wire through holes are provided on the mounting plate. Support legs are fixedly connected at the four corners of the bottom surface of the mounting plate. The support legs are supported on the bottom surface of the inner cavity of the protection box and are fixedly connected to the protection box by screws. The mounting screws on the power carrier module body are passed through and fixed in the mounting holes. The connecting wire buckles are fixed in the buckles and are inserted into the through-tubes through the wire through holes.

[0009] Beneficial effects of the present invention: The present invention adds a protective box to the power carrier module. The protective box can be installed on the photovoltaic inverter housing by means of a through-tube provided on the protective box in conjunction with two sealing gaskets and a locking nut. During installation, only a round hole needs to be opened at a suitable position on the photovoltaic inverter housing to complete the mounting of the protective box. The mounting state is stable and has good sealing performance, and will not affect the normal function of the photovoltaic inverter. The connecting wire of the power carrier module can be extended into the photovoltaic inverter housing through the through-tube, thereby facilitating the adaptation and installation of the photovoltaic inverter and the power carrier module, making the modification of the photovoltaic inverter simpler and meeting different modification requirements. The mounting plate and heat dissipation rack designed in the protective box make the installation of the power carrier module more convenient, while ensuring the heat dissipation requirements of the power carrier module, and improving the applicability and safety of the power carrier module. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0011] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0012] Figure 3 This is a schematic diagram of the internal structure of the present invention after removing the sealing cover;

[0013] Figure 4 It is a cross-sectional view of the internal structure of the present invention;

[0014] Figure 5 It is a schematic diagram of the overall structure of the mounting plate of the present invention;

[0015] Figure 6 It is a schematic diagram of the overall structure of the heat dissipation frame of the present invention.

[0016] In the figure: 1 protective box, 2 sealing cover, 3 heat sink, 301 heat pipe, 302 air inlet slot, 4 support foot, 5 through-tube, 6 first sealing gasket, 7 second sealing gasket, 8 locking nut, 9 mounting plate, 901 buckle, 902 mounting hole, 903 threading through hole, 904 support leg, 10 power carrier module body, 11 connecting wire. DETAILED DESCRIPTION

[0017] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0018] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0019] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0020] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0021] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0022] Since the photovoltaic inverter contains a large number of electronic components and circuits, these components will generate electromagnetic fields when working. When the power carrier module is fixed inside the photovoltaic inverter box, it may be affected by the surrounding electromagnetic fields, resulting in signal interference or data errors. And because the photovoltaic inverter generates heat during operation, the power carrier module also needs to work normally within a certain temperature range. If the temperature of the power carrier module is high at the fixed position in the photovoltaic inverter, it will cause the power carrier module to overheat, which may affect its performance or even damage the module.

[0023] Based on the above problems, the present invention provides a power carrier module for photovoltaic inverter communication, referring to Figures 1 to 6As shown, specifically, the top surface of the protection box 1 designed by the present invention is open and is equipped with a sealing cover 2, the sealing cover 2 is fixedly connected to the protection box 1 by screws, and supporting feet 4 are installed at the four corners of the bottom surface of the protection box 1. The supporting feet 4 are suction cup feet and are rotatably connected to the bottom of the protection box 1 through a ball hinge, so that the supporting feet 4 can be universally rotated to adjust the angle and fixed to the photovoltaic inverter housing to be installed by suction through the suction cup, thereby supporting and fixing the protection box 1; the middle part of the bottom surface of the protection box 1 is connected with a through-tube 5, the through-tube 5 is penetrated by a first sealing gasket 6 and a second sealing gasket 7, and the circumferential wall of the through-tube 5 is provided with a thread and a locking nut is installed in conjunction with the thread. 8. The first sealing gasket 6 and the second sealing gasket 7 are both made of rubber material. A hole is opened on the shell of the photovoltaic inverter where the power carrier module needs to be installed. After the through-tube 5 is connected to the photovoltaic inverter shell, the first sealing gasket 6 and the second sealing gasket 7 are respectively located on the inner and outer sides of the photovoltaic inverter shell, and the first sealing gasket 6 and the second sealing gasket 7 are clamped on the photovoltaic inverter shell by tightening the locking nut 8, so that the protective box 1 is fixedly installed on the photovoltaic inverter shell, and is fixed with the support of the supporting feet 4, so that the installation of the protective box 1 is more stable, and the first sealing gasket 6 and the second sealing gasket 7 can seal the opening of the photovoltaic inverter shell during installation.

[0024] The bottom surface of the inner cavity of the protection box 1 is paved with a heat sink 3, and the heat sink 3 includes heat pipes 301 arranged at even intervals. The heat pipes 301 are made of copper tubes and have good thermal conductivity. The two ends of the heat pipes 301 are fixedly connected through air inlet slots 302, and the heat pipes 301 are connected with the air inlet slots 302. The heat pipes 301 are arranged at the bottom of the inner cavity of the protection box 1. The air inlet slots 302 are in a trumpet shape and are located outside the protection box 1, so that the external wind enters from the air inlet slots 302 on one side and passes through the heat pipes 301, and then blows out from the air inlet slots 302 on the other side, so as to realize ventilation inside the heat sink 3, thereby taking away the heat on the heat pipes 301 and achieving heat dissipation effect. The heat pipes 301 are sealed and connected to the penetration parts of the side walls of the protection box 1, so as to ensure the sealing inside the protection box 1 and prevent rainwater from entering. The above penetration parts refer to the parts on the two opposite side walls of the protection box 1 for the two ends of the heat pipes 301 to pass through to the outside of the protection box 1.

[0025] The bottom surface of the inner cavity of the protection box 1 is fixedly connected with a mounting plate 9 by screws. The mounting plate 9 is a metal plate with good heat conduction effect, and buckles 901 are fixedly connected to the edges around it. The mounting plate 9 is provided with a mounting hole 902, and a threading through hole 903 is provided in the middle of the mounting plate 9. Support legs 904 are fixedly connected at the four corners of the bottom surface of the mounting plate 9. The support legs 904 are supported on the bottom surface of the inner cavity of the protection box 1 and fixed by screws. The power carrier module body 10 is fixed to the mounting hole 902 by screws. The connecting wire 11 of the power carrier module body 10 is fixed in the buckle 901, and after passing through the threading through hole 903, it is inserted into the threading tube 5, so that the connecting wire 11 can extend from the threading tube 5 into the inside of the photovoltaic inverter housing, which is convenient for connection with the photovoltaic inverter. The bottom of the mounting plate 9 is attached to the upper surface of the heat sink 3 and to the heat pipe 301, so that the heat generated by the power carrier module body 10 is guided to the heat pipe 301 through the mounting plate 9, and the air circulation inside the heat pipe 301 takes away the heat to achieve heat dissipation.

[0026] In summary, the present invention adds a protective box to the power carrier module. The protective box can be installed on the photovoltaic inverter housing by means of a through-tube provided on the protective box in conjunction with two sealing gaskets and a locking nut. During installation, only a round hole needs to be opened at a suitable position on the photovoltaic inverter housing to complete the mounting of the protective box. The mounting state is stable and has good sealing performance, and will not affect the normal function of the photovoltaic inverter. The connecting wire of the power carrier module can be extended into the photovoltaic inverter housing through the through-tube, thereby facilitating the adaptation and installation of the photovoltaic inverter and the power carrier module, making the modification of the photovoltaic inverter simpler and meeting different modification requirements. The mounting plate and heat dissipation rack designed in the protective box make the installation of the power carrier module more convenient, while ensuring the heat dissipation requirements of the power carrier module, and improving the applicability and safety of the power carrier module.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] Components not described in detail herein are prior art.

[0030] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the protection scope of the present invention.

Claims

1. A power carrier module for photovoltaic inverter communication, characterized in that: The invention comprises a protection box (1), the top surface of the protection box (1) is open and is fitted with a sealing cover (2), and support feet (4) are fitted at the four corners of the bottom surface of the protection box (1); a through-tube (5) is connected to the middle of the bottom surface of the protection box (1), a first sealing gasket (6) and a second sealing gasket (7) are fitted on the through-tube (5), a thread is provided on the circumferential wall of the through-tube (5) and a locking nut (8) is fitted with the thread; a heat sink (3) is laid on the bottom surface of the inner cavity of the protection box (1), the two ends of the heat sink (3) are open and the openings are located outside the protection box (1); a mounting plate (9) is fixedly connected to the bottom surface of the inner cavity of the protection box (1) by screws, the bottom of the mounting plate (9) is attached to the upper surface of the heat sink (3), a power carrier module body (10) is fixedly connected to the upper surface of the mounting plate (9) by screws, and a connecting line (11) of the power carrier module body (10) passes through the through-tube (5).

2. A power carrier module for photovoltaic inverter communication according to claim 1, characterized in that: The sealing cover (2) is fixedly connected to the protection box (1) by means of screws.

3. A power carrier module for photovoltaic inverter communication according to claim 1, characterized in that: The heat dissipation rack (3) comprises heat dissipation pipes (301) arranged at even intervals and air inlet slots (302) fixedly connected to both ends of the heat dissipation pipes (301); the heat dissipation pipes (301) are connected to the air inlet slots (302); the heat dissipation pipes (301) are arranged at the bottom of the inner cavity of the protection box (1); the air inlet slots (302) are in a trumpet shape and are located outside the protection box (1); and the heat dissipation pipes (301) are sealed and connected to the side wall of the protection box (1) at a penetration portion.

4. A power carrier module for photovoltaic inverter communication according to claim 3, characterized in that: The heat dissipation pipe (301) is a copper pipe.

5. A power carrier module for photovoltaic inverter communication according to claim 1, characterized in that: The support legs (4) are suction cup legs and are rotatably connected to the bottom of the protection box (1) via a ball joint.

6. A power carrier module for photovoltaic inverter communication according to claim 1, characterized in that: The first sealing gasket (6) and the second sealing gasket (7) are both made of rubber.

7. A power carrier module for photovoltaic inverter communication according to claim 1, characterized in that: The mounting plate (9) is a metal plate, and buckles (901) are fixedly connected to the edges thereof; a mounting hole (902) and a threading hole (903) are provided on the mounting plate (9); support legs (904) are fixedly connected at the four corners of the bottom surface of the mounting plate (9), the support legs (904) are supported on the bottom surface of the inner cavity of the protection box (1) and are fixedly connected to the protection box (1) by screws, and the power carrier module body (10) is fixed to the mounting hole (902) by screws; the connecting wire (11) is fixedly connected to the buckle (901) and passes through the threading hole (903) to enter the threading tube (5).

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