Upper cover module of photovoltaic inverter and photovoltaic inverter

Abstract

The upper cover module comprises an upper cover and a light indicating device connected with the upper cover, the light indicating device comprises a lamp panel and a light guide plate, the lamp panel is provided with a plurality of light-emitting light sources, and the light-emitting light sources are arranged on the light guide plate. The light guide plate is provided with a light guide column corresponding to the light-emitting light source, the light guide plate is located between the support and the lamp panel, one end of the support is connected with the upper cover, and the other end of the support is connected with the light guide plate. The upper cover module is high in quality, and production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment, specifically relating to a top cover module of a photovoltaic inverter and a photovoltaic inverter. Background Technology

[0002] Photovoltaic inverters include a top cover, typically made of sheet metal materials such as steel, aluminum, and stainless steel. The sheet metal top cover houses the light panels, which are usually riveted together and secured with rivet nuts and screws. However, rivet fixation inevitably leaves rivet marks on the top cover, affecting its appearance. Furthermore, the high quality requirements of overseas customers lead to low production yields and increased costs. To conceal the rivet marks, some manufacturers use externally screen-printed plastic sheets to cover them, while others expose the marks and increase the coating thickness, further increasing costs. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a top cover module with no rivet marks on its outer surface. This utility model also provides a photovoltaic inverter of higher quality and reduced production costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic inverter top cover module includes a top cover and a light indicator device. The top cover has an inner surface facing the interior of the photovoltaic inverter and an outer surface opposite to the inner surface. The light indicator device includes a light source and a bracket. The light source is connected to the inner surface of the top cover through the bracket. The bracket and the top cover are welded or bonded together. The light source is disposed on the bracket.

[0006] In a preferred embodiment, the light indicator device further includes a light guide plate disposed between the bracket and the light source. The number of light guide plates is multiple, and the number of light guide plates is equal to the number of light sources. One light source corresponds to one light guide plate, solving the problem of poor sealing or reduced lifespan of the sealing strip when the top cover is curved.

[0007] In a preferred embodiment, the light source is disposed on a lamp plate, the lamp plate is provided with a first mounting hole, the light guide plate is provided with a second mounting hole, and the bracket is provided with a third mounting hole. The lamp plate, the light guide plate, and the bracket are fixedly connected by multiple fasteners passing through the first mounting hole, the second mounting hole, and the third mounting hole in sequence.

[0008] In a preferred embodiment, the bracket is provided with a receiving space for accommodating the light guide plate.

[0009] In a preferred embodiment, the bracket is provided with a plurality of positioning pins for positioning the light guide plate, and the third mounting hole is provided on the positioning pins.

[0010] In a preferred embodiment, the light guide plate further includes light-shielding members, and the number of light-shielding members is at least two, with the light guide column located between the light-shielding members. The light-shielding members can prevent light leakage between two adjacent light guide columns.

[0011] In a preferred embodiment, the light guide plate has a body, the light guide post extends from the body along a first direction, and the light-shielding member extends from the body along a second direction, the first direction and the second direction being opposite. The angle between the first direction and the second direction is 180 degrees.

[0012] In a more preferred embodiment, the body of the light guide plate is made of transparent plastic. The body has good light transmittance.

[0013] In a preferred embodiment, the upper cover is made of sheet metal; the upper cover has a plurality of display holes, and the light guide column passes through the display holes to protrude from the surface of the upper cover.

[0014] This utility model also adopts the following technical solution:

[0015] A photovoltaic inverter includes the aforementioned top cover module.

[0016] The present invention adopts the above solution and has the following advantages compared with the prior art:

[0017] In this utility model, when the light indicator device is installed on the top cover module, the light source is connected to the inner surface of the top cover through the bracket, which avoids riveting on the top cover, that is, avoids rivet marks on the outer surface of the top cover. The top cover is free of rivet marks, making the quality more reliable and reducing the cost increase caused by rivet marks. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the 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.

[0019] Figure 1 This is a schematic diagram of the back of the top cover module of the photovoltaic inverter according to an embodiment of the present invention;

[0020] Figure 2 This is an exploded view of the back of the top cover module according to an embodiment of the present utility model;

[0021] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0022] Figure 4 This is a front view of the top cover module according to an embodiment of the present utility model;

[0023] Figure 5 This is a perspective view of a light guide plate according to an embodiment of the present utility model.

[0024] in,

[0025] 1. Top cover; 11. Display hole;

[0026] 2. Light indicator device; 21. Lamp panel; 211. First mounting hole; 212. Plug terminal; 22. Light guide plate; 221. Second mounting hole; 222. Light shield; 223. Light guide post; 224. Body;

[0027] 3. Bracket; 31. Third mounting hole; 32. Accommodation space; 33. Positioning pin;

[0028] 4. Fasteners. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Reference Figures 1 to 4 As shown, this embodiment provides a photovoltaic inverter, including a top cover module. The top cover module includes a top cover 1 and a light indicator device 2 fixedly connected to the top cover 1. The top cover 1 is made of sheet metal, which has the characteristics of high temperature resistance, waterproof, dustproof, corrosion resistance and good electrical insulation.

[0031] Furthermore, the light indicator device 2 includes a lamp plate 21, a light guide plate 22, and a bracket 3 fixedly connected to the upper cover 1. Specifically, the bracket 3 is elongated and is welded or bonded to the upper cover 1. In this embodiment, the bracket 3 is welded to the upper cover 1.

[0032] The light indicator device 2 is used to project the light source on the lamp panel 21 inside the photovoltaic inverter through the light guide plate 22 to present corresponding indicator light effects. Specifically, the light source refers to LED lights. In this embodiment, there are three LED lights: "Operating," "Fault," and "Ground Fault," which respectively indicate the operating status, fault condition, and ground fault of the photovoltaic inverter. In daily use, it is crucial to regularly monitor the status of these lights to ensure the normal operation of the inverter. The upper cover 1 has an inner surface facing the interior of the photovoltaic inverter and an outer surface opposite to the inner surface. The light source is connected to the inner surface of the upper cover 1 via a bracket 3, and the light source is mounted on the bracket 3.

[0033] The lamp board 21 has a first surface and a second surface. Multiple plug terminals 212 are provided on the first surface. The plug terminals 212 are electrically connected to the power circuit board inside the photovoltaic inverter, and play the role of communicating with the power board inside the photovoltaic inverter. The operating status of the photovoltaic inverter is transmitted to the lamp board 21 through the plug terminals 212.

[0034] The light panel 21 has three LED lights, and the light guide plate 22 has three light guide columns 223 corresponding to the light sources. The light guide columns 223 are used to emit the light emitted by the LED lights. Furthermore, the upper cover 1 has three display holes 11. After installation, the light guide columns 223 pass through the display holes 11 to be flush with or protrude from the upper cover of the photovoltaic inverter. Even further, there are multiple light guide plates 22, the number of which is equal to the number of light sources, with one light source corresponding to one light guide column and one display hole.

[0035] In existing technologies, when the top cover is curved, it is difficult to design the lamp panel to follow the shape of the top cover. There is a seal between the light guide plate and the housing. A larger light guide plate may experience problems with excessive or insufficient compression of the seal. Excessive compression will affect the service life of the seal, while insufficient compression will lead to poor sealing. Compared to a whole light guide plate, the area of ​​a single light guide plate is relatively small. Even with a curved top cover, the compression of the seal is well within the compressible range, achieving a good seal. That is, the light indicator device 2 in this embodiment uses one LED light corresponding to one light guide plate, which solves the problem of poor sealing or reduced service life of the sealing strip.

[0036] Furthermore, existing technologies use only one light guide plate with multiple light guide columns. When the light guide plate is long and narrow, the screw spacing is too large, leading to poor sealing. Alternatively, an excessive number of screws can increase rivet marks, further reducing the quality of the photovoltaic inverter. In this embodiment, multiple light guide plates are used, and there is no need to rivet the top cover, thus avoiding the above problems.

[0037] Combination Figure 2 and Figure 5As shown, the light guide plate 22 has light-shielding elements 222, and the number of light-shielding elements 222 is at least two. Specifically, in this embodiment, each light guide plate 22 is provided with two light-shielding elements 222, and the light guide column 223 is located between the two light-shielding elements 222. Two light-shielding elements 222 are provided between two adjacent light guide columns 223, which can effectively achieve the function of preventing light leakage.

[0038] In existing technologies, light crosstalk occurs when the number of LEDs increases. This is often addressed by adding light-blocking plates, which increases assembly steps. In this embodiment, the light-blocking component 222 is manufactured using screen printing technology, preventing light crosstalk between adjacent light guide plates 22. This eliminates the need for additional light-blocking plates, reducing assembly steps on the production line. In other embodiments, the light-blocking component can also be laser-engraved, with the aim of making it opaque and preventing light crosstalk. During installation, the bracket 3 is first welded to the upper cover 1 of the photovoltaic inverter to fix the bracket 3 and the upper cover 1. Then, the light guide plate 22 is placed on the bracket 3, followed by the lamp plate 21 on the light guide plate 22. Finally, the lamp plate 21, the light guide plate 22, and the bracket 3 are fixedly connected by multiple fasteners 4, specifically screws.

[0039] Reference Figure 5 As shown, the light guide plate 22 has a body 224, a light guide column 223 extending from the body 224 along a first direction, and a light-shielding member 222 extending from the body 224 along a second direction. The first and second directions are opposite. Here, the "first direction" refers to the direction in which the light guide plate 22 faces the top cover, and the "second direction" refers to the direction in which the light guide plate 22 faces the interior of the photovoltaic inverter. The body 224 of the light guide plate 22 is made of transparent plastic, which has good light transmittance.

[0040] Furthermore, the bracket 3 is provided with a receiving space 32 for accommodating multiple light guide plates 22 and multiple positioning pins 33 for positioning the light guide plates 22. The lamp plate 21 has a first mounting hole 211, the light guide plate 22 has a second mounting hole 221, and the bracket 3 has a third mounting hole 31. The third mounting holes 31 are located on the positioning pins 33. Each of the two opposite sides of the light guide plate 22 has three first mounting holes 211, for a total of six. Each light guide plate 22 has two oppositely arranged second mounting holes 221, and each of the two opposite sides of the bracket 3 has three third mounting holes 31. During assembly, after aligning the first mounting holes 211, second mounting holes 221, and third mounting holes 31, screws are passed through the first mounting holes 211, second mounting holes 221, and third mounting holes 31 in sequence to securely connect the lamp plate 21, light guide plate 22, and bracket 3.

[0041] In this embodiment of the photovoltaic inverter, when the light indicator device 2 is installed on the upper cover 1, the bracket 3 is first welded to the back of the upper cover 1. Then, the second mounting hole 221 on the positioning pin 33 of the light guide plate 22 is aligned with the third mounting hole 31 on the bracket 3. At this time, the light guide column 223 on the light guide plate 22 passes through the display hole 11 on the upper cover 1. Next, the first mounting hole 211 on the lamp plate 21 is aligned with the second mounting hole 221 on the light guide plate 22. Finally, screws are used to pass through the first mounting hole 211, the second mounting hole 221 and the third mounting hole 31 in sequence to fix the lamp plate 21, the light guide plate 22 and the bracket 3. The bracket 3 avoids riveting on the upper cover.

[0042] Existing light indicator devices generally include a light guide plate and a lamp plate. When assembling the light indicator device onto the top cover, a rivet nut is first set on the top cover, and a screw through hole is provided on the lamp plate. The top cover, light guide plate, and lamp plate are locked together by the rivet nut and screws. This inevitably leads to rivet marks. In view of the problem that existing technologies cannot completely avoid rivet marks, the photovoltaic inverter of this embodiment completely avoids rivet marks. There are no rivet marks on the front of the top cover, making the quality more reliable and reducing the cost increase caused by rivet marks.

[0043] The photovoltaic inverter of this embodiment also has the following advantages: (1) Each light source corresponds to a light guide plate, and the light guide plate is equipped with a light shield, which solves the problems of light leakage and poor sealing. At the same time, there are multiple light guide plates and they are set independently, which can be shared and convenient to increase or decrease the number of light guide plates; (2) The spacing between two adjacent light guide plates can be adjusted at any time. When a light guide plate has a quality problem, only the problematic light guide plate needs to be replaced, instead of replacing the entire light guide plate, thus reducing the cost of use; (3) Since there are multiple light guide plates and the area of ​​a single light guide plate is small, even with an arc-shaped top cover, the sealing compression is completely within the compressible range, which can achieve good sealing.

[0044] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0045] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A top cover module for a photovoltaic inverter, comprising a top cover and a light indicator device, said top cover having an inner surface facing the interior of the photovoltaic inverter and an outer surface opposite to the inner surface, characterized in that, The light indicator device includes a light source and a bracket. The light source is connected to the inner surface of the upper cover through the bracket. The bracket and the upper cover are welded or bonded together. The light source is disposed on the bracket.

2. The upper cover module according to claim 1, characterized in that, The light indicator device further includes a light guide plate, which is disposed between the bracket and the light source. There are multiple light guide plates, and the number of light guide plates is equal to the number of light sources.

3. The upper cover module according to claim 2, characterized in that, The light source is disposed on the lamp plate, the lamp plate is provided with a first mounting hole, the light guide plate is provided with a second mounting hole, and the bracket is provided with a third mounting hole. The lamp plate, the light guide plate and the bracket are fixedly connected by multiple fasteners passing through the first mounting hole, the second mounting hole and the third mounting hole in sequence.

4. The upper cover module according to claim 3, characterized in that, The bracket is provided with a receiving space for accommodating the light guide plate.

5. The upper cover module according to claim 4, characterized in that, The bracket is provided with a plurality of positioning pins for positioning the light guide plate, and the third mounting hole is provided on the positioning pins.

6. The upper cover module according to claim 2, characterized in that, The light guide plate includes a light guide column and a light shield, and the number of light shields is at least two, with the light guide column located between the light shields.

7. The upper cover module according to claim 6, characterized in that, The light guide plate has a body, the light guide column extends from the body along a first direction, and the light shield extends from the body along a second direction, wherein the first direction and the second direction are opposite.

8. The top cover module according to claim 7, characterized in that, The light guide plate is made of transparent plastic.

9. The upper cover module according to claim 8, characterized in that, The upper cover is made of sheet metal; the upper cover has multiple display holes, and the light guide column passes through the display holes.

10. A photovoltaic inverter, characterized in that, Includes the top cover module as described in any one of claims 1 to 9.

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