Solar inverter overload protection device

Abstract

This utility model discloses an overload protection device for a solar inverter, including an inverter housing with side plates and a front plate fixedly connected. The side plates have heat dissipation grilles embedded within them and fixedly connected. Each grille has several adjacent grille units, and each unit has grille holes. The front plate has a thermochromic strip fixedly connected to it. The beneficial effect of this solar inverter overload protection device lies in its comprehensive application of passive heat dissipation measures and active thermochromic measures, reminding operators to pay attention to the internal temperature of the inverter housing and taking timely measures to prevent overload when the temperature is too high.

Description

Technical Field

[0001] This utility model belongs to the field of inverter auxiliary equipment, specifically relating to an overload protection device for solar inverters. Background Technology

[0002] The patent, with publication number CN209488448U and subject title "Utility Model Patent for Inverter Overload Protection Circuit," and IPC classification number H02M1 / 32, discloses the following technical solutions: "An RC snubber circuit, comprising a second capacitor C2 and a third resistor R3, wherein the second capacitor C2 and the third resistor R3 are connected in series and then connected in series with the first output terminal and the second output terminal on the first side of transformer T1; a bridge rectifier circuit, wherein the first and second terminals of the bridge rectifier circuit are respectively connected to the first output terminal and the second output terminal on the second side of transformer T1, the third terminal of the bridge rectifier circuit is connected to the output terminal, and the fourth terminal of the bridge rectifier circuit is connected to the ground terminal; a push-pull drive high-frequency circuit, comprising a first MOSFET Q1, a second MOSFET Q2, and a first control chip U1, wherein the gate of the first MOSFET Q1 is connected to the fifth pin of the first control chip U1 through the first resistor R1, and the gate of the second MOSFET Q2 is connected to the sixth pin of the first control chip U1 through the second resistor R2."

[0003] Therefore, the above utility model patents have disclosed one technical solution for inverter overload prevention circuits. However, the technical solutions disclosed in these utility model patents focus on solving the problem of easy overload by embedding the overload prevention circuit in the inverter, but do not further address issues such as how to visually display the internal temperature of the inverter, which requires further improvement. Utility Model Content

[0004] This utility model addresses the shortcomings of the existing technology by providing an overload protection device for solar inverters.

[0005] This utility model adopts the following technical solution: an overload protection device for a solar inverter, comprising an inverter housing, the inverter housing having a side plate and a front plate, the side plate and the front plate being fixedly connected, wherein:

[0006] The side panel is provided with a heat dissipation grille, which is embedded in the side panel and fixedly connected to the side panel. The heat dissipation grille is provided with several grille units, which are adjacent to each other, and each grille unit has grille holes.

[0007] The side panel is equipped with an inclined ventilation structure, which is embedded in the side panel and fixedly connected to the side panel. The inclined ventilation structure is equipped with a guide plate and a sealing plate, which are fixedly connected to each other. The guide plate and the sealing plate together form an inclined ventilation channel.

[0008] The front panel is equipped with a thermochromic strip, which is fixedly connected to the front panel.

[0009] As a preferred technical solution to the above technical solutions, the grid unit is provided with a number of longitudinal grid bars and a number of transverse grid bars, and the longitudinal grid bars and transverse grid bars are fixedly connected.

[0010] As a preferred technical solution to the above technical solutions, the external opening of the inclined ventilation channel is located at the side plate, and the internal opening of the inclined ventilation channel is located inside the inverter housing, with the vertical height of the external opening being lower than that of the internal opening.

[0011] As a preferred technical solution to the above technical solutions, the outer surface of the thermochromic strip is provided with a thermochromic ink layer.

[0012] As a preferred technical solution to the above technical solutions, the inverter housing is also provided with a base plate, and the base plate is provided with several inverter interfaces.

[0013] The overload protection device for solar inverters disclosed in this utility model has the advantage of comprehensively applying passive heat dissipation measures and active thermochromic measures to remind operators to pay attention to the internal temperature of the inverter casing and take timely measures to prevent overload when the temperature is too high. Attached Figure Description

[0014] Figure 1 This is the main view of this application.

[0015] Figure 2 This is a side view of this application.

[0016] Figure 3 This is a bottom view of this application.

[0017] Figure 4 This is a perspective view of this application.

[0018] Figure 5 This is a three-dimensional view from another perspective of this application.

[0019] Figure 6 yes Figure 2 A magnified view of a portion of region A.

[0020] Figure 7 yes Figure 3 A magnified view of a portion of region B.

[0021] The reference numerals in the attached drawings include: 100-inverter housing; 120-side plate; 130-heat dissipation grille; 131-grille unit; 132-longitudinal grid bar; 133-transverse grid bar; 134-grille hole; 140-sloping ventilation structure; 141-guide plate; 142-sealing plate; 143-sloping ventilation channel; 150-front plate; 151-thermochromic strip; 160-bottom plate; 161-inverter interface. Detailed Implementation

[0022] This utility model discloses an overload protection device for a solar inverter. The following description, in conjunction with a preferred embodiment (Embodiment 1), is shown in the accompanying drawings. Figures 1 to 7 The specific embodiments of this utility model will be further described below.

[0023] See attached diagram. Figures 1 to 7 , Figures 1 to 5 The overload protection device for solar inverters is shown from different perspectives. Figure 6 and Figure 7 The partial structures of the overload protection device for the solar inverter are shown.

[0024] Example 1.

[0025] Preferably, the solar inverter overload protection device includes an inverter housing 100, which has two side plates 120 and a front plate 150, and the side plates 120 and the front plate 150 are fixedly connected, wherein:

[0026] The side plate 120 is provided with (two) heat dissipation grilles 130, which are embedded in the side plate 120 and fixedly connected to the side plate 120. The heat dissipation grille 130 is provided with several grille units 131, which are adjacent to each other to form a planar heat dissipation grille 130. Each grille unit 131 has a grille hole 134.

[0027] The side panel 120 is provided with an inclined ventilation structure 140, which is embedded in the side panel 120 and fixedly connected to the side panel 120. The inclined ventilation structure 140 is provided with a guide plate 141 and a sealing plate 142, which are fixedly connected to each other. The guide plate 141 and the sealing plate 142 together form an inclined ventilation channel 143.

[0028] The front panel 150 is provided with a thermochromic strip 151, which is fixedly connected to the front panel 150. This allows the inverter housing 100 to combine passive heat dissipation measures with active thermochromic measures, reminding operators to pay attention to the internal temperature of the inverter housing 100 and take timely measures to prevent overload when the temperature is too high.

[0029] The grid unit 131 is provided with a number of longitudinal grid bars 132 and a number of transverse grid bars 133. The longitudinal grid bars 132 and the transverse grid bars 133 are fixedly connected to form grid holes 134.

[0030] The inclined ventilation structure 140 is located between the two heat dissipation grilles 130.

[0031] The inclined ventilation structure 140 is located in the middle of the side plate 120.

[0032] The external opening of the inclined ventilation channel 143 is located at the side plate 120, and the internal opening of the inclined ventilation channel 143 is located inside the inverter housing 100. The vertical height (relative to the horizontal plane) of the external opening is lower than the vertical height (relative to the horizontal plane) of the internal opening, so that the internal airflow of the inverter housing 100 can be exchanged with the external environment through the inclined ventilation channel 143, while rainwater is difficult to flow back into the interior of the inverter housing 100 through the inclined ventilation channel 143.

[0033] The thermochromic strip 151 has a thermochromic ink layer on its outer surface. When the internal temperature of the inverter housing 100 is too high, the thermochromic ink layer can change color accordingly, thus visually reminding the operator that the solar inverter may be overloaded due to excessive temperature and needs to be dealt with in time.

[0034] The inverter housing 100 is also provided with a base plate 160, and the base plate 160 is provided with several inverter interfaces 161.

[0035] It is worth mentioning that the specific components and other technical features of the thermochromic ink involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be conventionally selected in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0036] For those skilled in the art, 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. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solar inverter overload prevention device, characterized by, Including the inverter housing, the inverter housing has side panels and a front panel, which are fixedly connected, wherein: The side panel is provided with a heat dissipation grille, which is embedded in the side panel and fixedly connected to the side panel. The heat dissipation grille is provided with several grille units, which are adjacent to each other, and each grille unit has grille holes. The side panel is equipped with an inclined ventilation structure, which is embedded in the side panel and fixedly connected to the side panel. The inclined ventilation structure is equipped with a guide plate and a sealing plate, which are fixedly connected to each other. The guide plate and the sealing plate together form an inclined ventilation channel. The front panel is equipped with a thermochromic strip, which is fixedly connected to the front panel.

2. The solar inverter anti-overload device according to claim 1, wherein, The grid unit has several longitudinal grid bars and several transverse grid bars, and the longitudinal grid bars and transverse grid bars are fixedly connected.

3. The solar inverter anti-overload device according to claim 1, wherein, The external opening of the inclined ventilation duct is located on the side plate, and the internal opening of the inclined ventilation duct is located inside the inverter housing. The vertical height of the external opening is lower than that of the internal opening.

4. The overload protection device for a solar inverter according to claim 1, characterized in that, The outer surface of the thermochromic strip is covered with a thermochromic ink layer.

5. The solar inverter overload prevention device of claim 1, wherein, The inverter housing also has a base plate, which has several inverter interfaces.

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