Alternating-current photovoltaic module using frame to dissipate heat

Abstract

The utility model relates to the field of photovoltaic modules, in particular to an alternating current photovoltaic module utilizing a frame to dissipate heat, which comprises a photovoltaic module, the photovoltaic module comprises a back plate, a metal frame is arranged on the outer side of the back plate, a micro inverter is further arranged below the back plate, the micro inverter comprises a shell, and the shell comprises a heat insulation sealing cover and a metal heat conduction shell which are arranged up and down. One side of the metal heat conduction shell is provided with a heat conduction connecting piece, the heat conduction connecting piece comprises an attaching piece, the attaching piece is connected with the metal frame through a first bolt, the attaching piece is attached to the metal frame, and according to the design, the side, close to the photovoltaic module, of the micro inverter is provided with a heat insulation sealing cover, so that abnormal aging caused by local overheating of the photovoltaic module is avoided; meanwhile, the other side of the micro inverter is provided with the metal heat conduction shell with good heat conductivity, and after the metal heat conduction shell is connected with the metal frame through the heat conduction connecting piece, the metal frame can be used for assisting in heat dissipation, and the heat dissipation effect is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic modules, and specifically relates to an AC photovoltaic module that utilizes frame heat dissipation. Background Technology

[0002] Photovoltaic microinverters are used to convert the direct current generated by photovoltaic cells under sunlight into alternating current and then connect it to the power grid. Due to their advantages such as high safety, high efficiency, long service life and high power generation, they are being used more and more widely in the field of photovoltaic power generation.

[0003] Currently, there are two installation methods for microinverters: 1. Installing the microinverter on a bracket, but this method is difficult to implement and has high labor costs; 2. Fixing the microinverter to the frame of the photovoltaic module. Compared to the first method, this method makes on-site construction more convenient and saves labor costs. However, this method does not take into account the high temperature and poor ventilation on the back of the photovoltaic module, which can cause the microinverter to shut down or have its power limited due to overheating, thus affecting the power generation of the photovoltaic module. At the same time, the heat dissipated by the microinverter itself can be conducted to the photovoltaic module, causing localized overheating and abnormal aging of the photovoltaic module. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an AC photovoltaic module that utilizes a frame for heat dissipation.

[0005] An AC photovoltaic module utilizing frame heat dissipation includes a photovoltaic module, the photovoltaic module including a back panel, the outer side of the back panel having a metal frame, characterized in that a micro inverter is provided below the back panel;

[0006] The micro inverter includes a housing, which includes an insulating cover and a metal heat-conducting shell arranged in an upper and lower configuration, and the insulating cover and the metal heat-conducting shell are detachably connected.

[0007] A heat-conducting connector is provided on one side of the metal heat-conducting shell. The heat-conducting connector includes a connecting piece and an attachment piece. The two sides of the connecting piece are fixedly connected to the metal heat-conducting shell and the attachment piece, respectively. The attachment piece is connected to the metal frame by a first bolt and is fitted to the metal frame.

[0008] Furthermore, the heat-insulating cover is made of plastic.

[0009] Furthermore, the metal heat-conducting shell has an opening on the side near the back plate, and the heat-insulating cover is disposed at the opening.

[0010] Furthermore, the heat-insulating cover and the metal heat-conducting shell are connected by a snap-fit.

[0011] Furthermore, the connecting piece and the attaching piece are arranged perpendicularly, and the metal frame includes a downwardly extending extension piece, with the attaching piece and the extension piece being attached to each other.

[0012] Furthermore, the metal frame also includes a second limiting piece for abutting against the back plate. The second limiting piece is perpendicular to the extension piece, and the connecting piece is connected to the second limiting piece by a second bolt.

[0013] Furthermore, the attachment piece and the connecting piece adopt an integrated structure, and the thermally conductive connector and the metal thermally conductive shell adopt an integrated structure.

[0014] Furthermore, the metal frame, the metal heat-conducting shell, and the heat-conducting connector are all made of aluminum alloy.

[0015] The beneficial effects of this utility model are:

[0016] A heat-insulating cover is installed on the side of the microinverter closest to the photovoltaic module to reduce the heat generated inside the microinverter from being conducted to the solar cells of the photovoltaic module, thereby preventing localized overheating and abnormal aging of the photovoltaic module. At the same time, the other side of the microinverter uses a metal heat-conducting shell with good thermal conductivity and is connected to the metal frame through a heat-conducting connector, thereby conducting the heat generated by the inverter's power conversion to the metal frame, using the metal frame to assist in heat dissipation and enhance the heat dissipation effect.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A bottom view of the present invention is shown;

[0020] Figure 2 A schematic diagram of the structure of the micro inverter of this utility model is shown;

[0021] Figure 3 A side view of the micro inverter of this invention is shown.

[0022] In the diagram: 1. Backplate; 2. Metal frame; 3. Micro inverter; 4. Second bolt; 5. First bolt; 6. Second limiting piece; 7. Extension piece; 8. Metal heat-conducting shell; 9. Attachment piece; 10. Third bolt hole; 11. First bolt hole; 12. Connecting piece; 13. Heat insulation cover. Detailed Implementation

[0023] 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.

[0024] like Figure 1-3 As shown, an AC photovoltaic module utilizing frame heat dissipation includes a photovoltaic module, which comprises, from top to bottom, a tempered glass layer, a first encapsulating film layer, a solar cell, a second encapsulating film layer, and a backsheet 1. A metal frame 2 is disposed on the outer side of the backsheet 1. A first limiting piece adapted to the metal frame 2 is provided on the upper inner side of the metal frame 2, which is used to abut against the tempered glass layer. A second limiting piece 6 adapted to the metal frame 2 is provided on the lower inner side of the metal frame 2, which is used to abut against the backsheet 1. A micro-inverter 3 is also disposed below the backsheet 1. The micro-inverter 3 includes a housing, which includes a heat-insulating cover 13 arranged vertically and a metal... The heat-conducting shell 8 has a heat-conducting connector on one side. The heat-conducting connector includes a connecting piece 12 and an attachment piece 9. The two sides of the connecting piece 12 are fixedly connected to the heat-conducting shell 8 and the attachment piece 9, respectively. The attachment piece 9 is connected to the metal frame 2 by the first bolt 5 and is fitted to the metal frame 2. This design provides a heat insulation cover 13 on the side of the micro inverter 3 that is close to the photovoltaic module to avoid local overheating and abnormal aging of the photovoltaic module. At the same time, the other side of the micro inverter 3 uses a metal heat-conducting shell 8 with good thermal conductivity. After being connected to the metal frame 2 by the heat-conducting connector, the metal frame 2 can be used to assist in heat dissipation and enhance the heat dissipation effect.

[0025] To ensure effective heat insulation between the microinverter 3 and the photovoltaic module, the heat insulation cover 13 is made of a plastic with poor thermal conductivity, and it completely covers the metal heat-conducting shell 8. Preferably, the heat insulation cover 13 is made of polypropylene.

[0026] The metal heat-conducting shell 8 has an opening on the side near the back plate 1, and a heat insulation cover 13 is disposed at the opening. The heat insulation cover 13 is detachably connected to the metal heat-conducting shell 8, allowing operators to install or remove the heat insulation cover 13 through the opening, facilitating maintenance or repair of the internal components of the micro inverter 3 and reducing maintenance costs. Preferably, the heat insulation cover 13 and the metal heat-conducting shell 8 are connected by a snap-fit.

[0027] The lower part of the metal frame 2 is provided with an extension piece 7 that extends downward and is adapted to it. The attachment piece 9 is attached to the extension piece 7 to facilitate the installation of the micro inverter 3. Specifically, the attachment piece 9 is provided with a first bolt hole 11, and the extension piece 7 is provided with a second bolt hole that is adapted to the first bolt hole 11. Then, the attachment piece 9 and the extension piece 7 are connected by screwing the first bolt 5 into the second bolt hole and the first bolt hole 11 in sequence.

[0028] The connecting piece 12 is perpendicular to the attaching piece 9. The connecting piece 12 is connected to the second limiting piece 6 by the second bolt 4 to further ensure the installation stability of the micro inverter 3. Specifically, the connecting piece 12 is provided with a third bolt hole 10, and the second limiting piece 6 is provided with a fourth bolt hole that matches the third bolt hole 10. The second bolt 4 is then screwed into the third bolt hole 10 and the fourth bolt hole in sequence to connect the connecting piece 12 and the second limiting piece 6.

[0029] The attachment plate 9 and the connecting plate 12 adopt an integrated structure, and the heat-conducting connector and the metal heat-conducting shell 8 adopt an integrated structure to ensure the structural strength of the heat-conducting connector and facilitate the conduction of heat generated by the micro inverter 3 to the metal frame 2 for heat dissipation. Preferably, the metal frame 2, the metal heat-conducting shell 8, and the heat-conducting connector are all made of aluminum alloy.

[0030] To ensure effective heat conduction within the microinverter 3, the heat-generating components of the microinverter 3 are housed within the metal heat-conducting shell 8 on the side furthest from the heat insulation cover 13. Preferably, the PCB board of the microinverter 3 can be fixed to the metal heat-conducting shell 8, and the chips on the PCB board can be bonded to the inner wall of the metal heat-conducting shell 8 using thermally conductive silicone. This allows the heat generated by the heat-generating components of the microinverter 3 to be quickly conducted away through the metal heat-conducting shell 8, thereby enhancing heat dissipation with the help of the thermally conductive connectors and the metal frame 2.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An AC photovoltaic module utilizing frame heat dissipation, comprising a photovoltaic module, the photovoltaic module including a back panel, and a metal frame provided on the outer side of the back panel, characterized in that, A micro inverter is located below the back panel; The micro inverter includes a housing, which includes an insulating cover and a metal heat-conducting shell arranged in an upper and lower configuration, and the insulating cover and the metal heat-conducting shell are detachably connected. A heat-conducting connector is provided on one side of the metal heat-conducting shell. The heat-conducting connector includes a connecting piece and an attachment piece. The two sides of the connecting piece are fixedly connected to the metal heat-conducting shell and the attachment piece, respectively. The attachment piece is connected to the metal frame by a first bolt and is fitted to the metal frame.

2. An AC photovoltaic module utilizing frame heat dissipation as described in claim 1, characterized in that, The heat-insulating cover is made of plastic.

3. An AC photovoltaic module utilizing frame heat dissipation as described in claim 1, characterized in that, The metal heat-conducting shell has an opening on the side near the back plate, and the heat-insulating cover is disposed at the opening.

4. An AC photovoltaic module utilizing frame heat dissipation as described in claim 3, characterized in that, The heat-insulating cover is connected to the metal heat-conducting shell by a snap fastener.

5. An AC photovoltaic module utilizing frame heat dissipation as described in claim 1, characterized in that, The connecting piece and the attaching piece are arranged perpendicularly, and the metal frame includes a downwardly extending extension piece, with the attaching piece and the extension piece being attached to each other.

6. An AC photovoltaic module utilizing frame heat dissipation as described in claim 5, characterized in that, The metal frame includes a second limiting piece for abutting against the back plate. The second limiting piece is perpendicular to the extension piece. The connecting piece is connected to the second limiting piece by a second bolt.

7. An AC photovoltaic module utilizing frame heat dissipation as described in claim 1 or 6, characterized in that, The attachment piece and the connecting piece adopt an integrated structure, and the thermally conductive connector and the metal thermally conductive shell adopt an integrated structure.

8. An AC photovoltaic module utilizing frame heat dissipation as described in claim 7, characterized in that, The metal frame, the metal heat-conducting shell, and the heat-conducting connector are all made of aluminum alloy.

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