Photovoltaic inverter efficiency testing system

Abstract

This utility model relates to the field of photovoltaic inverter testing technology and discloses a photovoltaic inverter efficiency testing system, including a housing, an instrument panel on the top of the housing, and connecting wires on the side wall of the housing. This utility model features a side box with an internal moisture-absorbing component on the side wall of the housing. A displacement plate can be pushed open to the right to engage the connecting wires with the wire clamping holes, and then the connecting wires and clamps can be secured with the slots of the internal plate. Afterwards, the displacement plate is closed, placing the connecting wires and clamps inside the side box. The moisture-absorbing component absorbs and dehumidifies the interior of the side box, ensuring the connecting wires and clamps are stored in a low-moisture environment. This prevents the connecting wires and clamps from rusting due to exposure to a humid external environment, thus promoting the long-term stable use and storage of the photovoltaic inverter efficiency testing system.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic inverter testing technology, specifically a photovoltaic inverter efficiency testing system. Background Technology

[0002] A photovoltaic (PV) inverter is a device that converts the direct current (DC) generated by photovoltaic (PV) modules into alternating current (AC) for grid connection or supply to residential and industrial use. PV inverters play a crucial role in PV power generation systems. A PV inverter efficiency testing system is an important tool for evaluating PV inverter performance. This system simulates different input conditions to measure the inverter's output power and efficiency, ensuring its reliability and performance in practical applications.

[0003] Existing photovoltaic inverter testing systems typically consist of a casing, testing instruments, connecting cables, and clamps on the connecting cables. When using the equipment, the inverter's outer casing is opened, and the wiring is completed at the terminals using the clamps before testing. However, the connecting cables and clamps are usually located outside the casing. In humid environments, these components are prone to rusting, which can affect their normal operation and hinder the long-term stable testing of the photovoltaic inverter system. Therefore, we propose a photovoltaic inverter efficiency testing system. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic inverter efficiency testing system to solve the problem mentioned in the background art that connecting wires and clamps are prone to rust when stored in a humid environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic inverter efficiency testing system, comprising:

[0006] The housing has an instrument panel on its top and connecting wires on its side walls, the connecting wires being electrically connected to terminal clamps.

[0007] A side box is provided on the side wall of the outer shell. The side wall of the side box has a wire-holding hole and a displacement plate that is slidably fitted on the side wall of the side box. An inner plate is provided inside the side box. A moisture-absorbing element is provided on the side wall of the inner plate and a slot is provided on the side wall of the inner plate.

[0008] A heat dissipation mesh is slidably fitted to the side wall of the outer casing. A connecting plate is provided on the left side wall of the heat dissipation mesh, and a cleaning component is fitted on the right side wall of the heat dissipation mesh. The cleaning component has a baffle and a fixing strip inside. The side wall of the baffle is provided with adhesive paper, and the side wall of the fixing strip is provided with a brush strip. A magnet is embedded in the side wall of the connecting plate, and a through hole is opened in the side wall of the connecting plate. A sliding hole is opened in the side wall of the displacement plate, and a sliding component is fitted inside the sliding hole. A baffle is provided on the side wall of the sliding component.

[0009] Preferably, the cleaning component is fixed to the side wall of the housing.

[0010] Preferably, a limiting slide bar is fixedly connected to the outside of the heat dissipation mesh.

[0011] Preferably, the sliding member has a positioning piece on its side wall.

[0012] Preferably, the sidewall of the positioning piece is provided with locking bolts.

[0013] Preferably, a deformation strip is provided inside the wire-locking hole.

[0014] Preferably, the sidewall of the displacement plate is provided with a push-pull tab.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model features a side box with an internal moisture-absorbing component on the side wall of the outer casing. The displacement plate can be pushed open to the right, allowing the connecting wire to be engaged with the wire clamping hole. The connecting wire and the terminal clamp are then engaged and fixed with the slots in the internal plate. Afterward, the displacement plate is closed, placing the connecting wire and terminal clamp inside the side box. The moisture-absorbing component absorbs and dehumidifies the interior of the side box, ensuring the connecting wire and terminal clamp are stored in a less humid environment. This prevents the connecting wire and terminal clamp from rusting due to exposure to a humid external environment, thus promoting the long-term stable use and storage of the photovoltaic inverter efficiency testing system.

[0017] 2. When the displacement plate is pushed, the sliding member can slide downwards, and the baffle of the sliding member moves downwards to cooperate with the side wall of the connecting plate. Thus, when the displacement plate moves, the baffle of the sliding member can push the connecting plate to the right. Then, the connecting plate causes the heat dissipation mesh to enter the interior of the cleaning component to the right. At this time, the heat dissipation mesh comes into contact with the brush strip and is brushed by the brush bristles. When the dust is brushed off, some of it can be stuck to the dust-adhesive paper. When the displacement plate moves to the left, the heat dissipation mesh moves to the left and resets from the interior of the cleaning component. This allows for convenient cleaning of the dust on the heat dissipation mesh, saving the trouble of manual cleaning and increasing the convenience of using the photovoltaic inverter efficiency testing system. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the side box when the displacement plate of this utility model slides to the right;

[0020] Figure 3 This is a schematic diagram of the internal structure of the sliding hole of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the cleaning component of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting plate structure of this utility model.

[0023] In the diagram: 100, outer casing; 110, instrument panel; 120, connecting wire; 121, wiring clamp; 200, side box; 201, wire clamping hole; 203, deformation strip; 210, displacement plate; 211, push-pull plate; 220, moisture-absorbing component; 230, internal plate; 231, slot; 300, heat dissipation mesh; 301, limit slider; 310, cleaning component; 311, stop strip; 312, dust-adhesive paper; 313, fixing strip; 314, brush strip; 320, sliding component; 321, baffle plate; 330, connecting plate; 331, magnetic piece; 332, through hole; 340, sliding hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figures 1-5 The photovoltaic inverter efficiency testing system shown in the diagram includes:

[0027] An instrument panel 110 is provided on the top of the housing 100. The instrument panel 110 is used to display the data obtained by the photovoltaic inverter efficiency test system. A connecting line 120 is provided on the side wall of the housing 100. The connecting line 120 is electrically connected to a terminal clamp 121. After opening the inverter outdoor unit cover, the wiring is completed on the terminal block through the terminal clamp 121 and then the test is performed.

[0028] A side box 200 is disposed on the side wall of the outer shell 100. The side wall of the side box 200 has a wire-locking hole 201 that matches the connecting wire 120. A displacement plate 210 is slidably fitted on the side wall of the side box 200. An inner plate 230 is disposed inside the side box 200. A moisture-absorbing element 220 is disposed on the side wall of the inner plate 230. The moisture-absorbing element 220 is composed of a stainless steel mesh box and calcium chloride desiccant particles inside the box. A slot 231 that matches the connecting wire 120 is disposed on the side wall of the inner plate 230.

[0029] The heat dissipation mesh 300 is slidably fitted onto the side wall of the outer casing 100. A connecting plate 330 is provided on the left side wall of the heat dissipation mesh 300, and a cleaning component 310 is fitted onto the right side of the heat dissipation mesh 300. The cleaning component 310 has a baffle 311 and a fixing strip 313 inside. When the sliding component 320 slides upward, the baffle 321 engages with the side wall of the through hole 332 of the connecting plate 330. At this time, when the displacement plate 210 moves, the baffle 321 will pass through the through hole 332 and will not push the connecting plate 330 to move. The side wall of the baffle 311 is provided with a dust-adhesive paper 312, and the side wall of the fixing strip 313 is provided with a brush strip 3. 14. A magnetic piece 331 is embedded in the side wall of the connecting plate 330. An iron strip is fixed to the side wall of the outer shell 100 on the side wall of the magnetic piece 331. The magnetic piece 331 can be magnetically attracted to the iron strip to achieve magnetic locking of the connecting plate 330. A through hole 332 is opened in the side wall of the connecting plate 330. A sliding hole 340 is opened in the side wall of the displacement plate 210. A sliding member 320 is fitted inside the sliding hole 340. A baffle 321 is fixed to both sides of the sliding member 320. The two baffles 321 can be used to clamp the connecting plate 330, so that the connecting plate 330 can move back and forth in conjunction with the displacement plate 210.

[0030] Specifically, the cleaning component 310 is fixed to the side wall of the housing 100.

[0031] Furthermore, a limiting slide bar 301 is externally fixed to the heat dissipation mesh 300.

[0032] Furthermore, the sliding component 320 has a positioning piece on its side wall.

[0033] Furthermore, the positioning plate has a locking bolt on its side wall. When the sliding member 320 slides, the positioning plate slides outside the locking bolt. When the locking bolt is tightened, the positioning plate can be used to position the sliding member 320.

[0034] It is worth noting that a deformation strip 203 is provided inside the wire locking hole 201, which is a common rubber strip.

[0035] It is worth noting that the side wall of the displacement plate 210 is provided with a push-pull tab 211.

[0036] In addition, all the electrical components and electrical equipment mentioned above use external power sources. The circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0037] Working principle: By setting a side box 200 with a moisture-absorbing component 220 inside the side wall of the outer casing 100, the displacement plate 210 can be pushed open to the right to engage the connecting wire 120 with the wire clamping hole 201. Then, the connecting wire 120 and the wiring clamp 121 are engaged and fixed with the slot 231 of the inner plate 230. After closing the displacement plate 210, the connecting wire 120 and the wiring clamp 121 are placed inside the side box 200. The moisture-absorbing component 220 absorbs and dehumidifies the inside of the side box 200, thus storing the connecting wire 120 and the wiring clamp 121 inside the less humid side box 200. This prevents the connecting wire 120 and the wiring clamp 121 from being exposed to the humid external environment and rusting, which is beneficial to the long-term stable use of the photovoltaic inverter efficiency testing system. And storage; when the displacement plate 210 is pushed, the sliding member 320 can be slid down and the baffle 321 of the sliding member 320 can be moved down to cooperate with the side wall of the connecting plate 330. Thus, when the displacement plate 210 is moved, the baffle 321 of the sliding member 320 can be used to push the connecting plate 330 to the right. Then the connecting plate 330 causes the heat dissipation mesh 300 to enter the interior of the cleaning member 310 to the right. At this time, the heat dissipation mesh 300 contacts the brush strip 314 and is brushed by the brush. When the dust is brushed off, some of it can be stuck by the dust sticking paper 312. When the displacement plate 210 is moved to the left, the heat dissipation mesh 300 moves to the left and resets from the interior of the cleaning member 310. Thus, the dust on the heat dissipation mesh 300 can be conveniently cleaned, saving the trouble of manual cleaning and increasing the convenience of using the photovoltaic inverter efficiency testing system.

[0038] It should be noted that, in this document, 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, method, 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 process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic inverter efficiency test system, characterized by, include: The housing (100) has an instrument panel (110) on its top and a connecting wire (120) on its side wall, the connecting wire (120) being electrically connected to a terminal clamp (121). A side box (200) is disposed on the side wall of the outer shell (100). The side wall of the side box (200) is provided with a wire-holding hole (201). A displacement plate (210) is slidably fitted on the side wall of the side box (200). An inner plate (230) is disposed inside the side box (200). A moisture-absorbing element (220) is disposed on the side wall of the inner plate (230). A slot (231) is provided on the side wall of the inner plate (230). A heat dissipation mesh (300) is slidably fitted to the side wall of the outer shell (100). A connecting plate (330) is provided on the left side wall of the heat dissipation mesh (300), and a cleaning component (310) is fitted on the right side of the heat dissipation mesh (300). A baffle (311) and a fixing strip (313) are provided inside the cleaning component (310). A dust-adhesive paper (312) is provided on the side wall of the baffle (311), and a bristle strip (314) is provided on the side wall of the fixing strip (313). A magnet (331) is embedded in the side wall of the connecting plate (330), and a through hole (332) is opened on the side wall of the connecting plate (330). A sliding hole (340) is opened on the side wall of the displacement plate (210), and a sliding component (320) is fitted inside the sliding hole (340). A baffle (321) is provided on the side wall of the sliding component (320).

2. The photovoltaic inverter efficiency test system of claim 1, wherein: The cleaning component (310) is fixed to the side wall of the housing (100).

3. The photovoltaic inverter efficiency test system of claim 1, wherein: The heat dissipation mesh (300) is externally fixed with a limiting slide bar (301).

4. The photovoltaic inverter efficiency test system of claim 1, wherein: The sliding member (320) has a positioning piece on its side wall.

5. The photovoltaic inverter efficiency test system of claim 4, wherein: The positioning plate has locking bolts on its side wall.

6. The photovoltaic inverter efficiency test system of claim 1, wherein: A deformation strip (203) is provided inside the wire-locking hole (201).

7. The photovoltaic inverter efficiency test system of claim 1, wherein: The displacement plate (210) is provided with a push-pull tab (211) on its side wall.

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