String type photovoltaic inverter

Abstract

The utility model discloses a string type photovoltaic inverter which comprises an inverter body, the top of the inverter body is provided with a top plate, the bottom of the inverter body is provided with a fence, the fence is provided with a protection assembly capable of protecting a wiring end, and the protection assembly comprises a partition plate, a limiting groove, a limiting rod, a sliding block, a protection plate, a telescopic spring, a fixing groove, a check curtain and a handle. The partition plate is arranged on the inner wall of the fence, the limiting groove is formed in the fence and the partition plate, the limiting rod is arranged on the inner wall of the limiting groove, the sliding blocks are arranged on the limiting rod in a sleeving mode and are in sliding connection with the inner wall of the limiting groove, the protection plate is arranged between the sliding blocks, the telescopic springs are arranged between the inner wall of the limiting groove and the sliding blocks, and the fixing groove is formed in the protection plate. The check curtain is arranged on the fence and the protection plate, and the handle is arranged on the protection plate. According to the technical scheme of the utility model, the protection assembly is arranged to protect the positive and negative terminals of the inverter.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic inverter technology, and in particular to a string photovoltaic inverter. Background Technology

[0002] A photovoltaic inverter is an inverter that converts the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency. It can be fed back to the commercial power transmission system or used to supply off-grid power. The photovoltaic inverter is one of the important system balancers in the photovoltaic array system. It can be used with general AC power supply equipment. Solar inverters have special functions to work with photovoltaic arrays, such as maximum power point tracking and islanding protection.

[0003] According to Chinese patent application number CN202323430858.5, a string photovoltaic inverter includes an inverter body. The inverter body has a door on its front side, a top plate on its top, and a protective plate on its bottom. The protective plate has protective components for conveniently protecting the wiring terminals. The protective components include a limiting groove, a protective plate, a curtain, a threaded rod, a knob, an arc-shaped groove one, and an arc-shaped groove two. The limiting groove is formed on the left and right sides of the inner wall of the protective plate, and the protective plate is slidably connected to the inside of the limiting groove. The blinds are respectively installed on the inner wall of the protective plate and the protective plate. This utility model protects the positive and negative terminals of the inverter by setting protective components, preventing damage to the slots and connected wiring in the absence of protection. At the same time, the slots are easily touched when not in use, which poses a certain safety risk. This application solves the problem through another technical solution: the connection slots of existing inverters are generally directly set on the outside of the inverter without protection, which makes the slots and connected wiring easy to be damaged. At the same time, the slots are easily touched when not in use, which poses a certain safety risk. Utility Model Content

[0004] The main purpose of this utility model is to propose a string photovoltaic inverter, which aims to solve the technical problem that the connection slots of existing inverters are generally directly set on the outside of the inverter without protection. This makes the slots and the connecting wires easy to be damaged, and the slots are easy to be accidentally touched when they are not in use, which poses a certain safety risk.

[0005] To achieve the above objectives, the present invention proposes a string photovoltaic inverter, which includes an inverter body, a top plate on the top of the inverter body, a enclosure at the bottom of the inverter body, and a protective component on the enclosure for protecting the wiring terminals.

[0006] The protective assembly includes a partition, a limiting groove, a limiting rod, a slider, a protective plate, a telescopic spring, a fixing groove, a curtain, and a handle. The partition is located on the inner wall of the enclosure. The limiting groove is formed between the enclosure and the partition. The limiting rod is located on the inner wall of the limiting groove. The slider is sleeved on the limiting rod and slidably connected to the inner wall of the limiting groove. The protective plate is located between the sliders. The telescopic spring is located between the inner wall of the limiting groove and the slider. The fixing groove is formed on the protective plate. The curtain is located between the enclosure and the protective plate. The handle is located on the protective plate.

[0007] Optionally, an LCD screen is provided on the front side of the inverter body.

[0008] Optionally, the inverter body has positive and negative terminals at the bottom left end and a cable limiting connector at the bottom right end.

[0009] Optionally, the number of partitions is multiple, and there are gaps between them.

[0010] Optionally, the number of protective plates is multiple, and the multiple protective plates are grouped into sets of two.

[0011] Optionally, there may be multiple fixing slots, with two fixing slots forming a group.

[0012] Optionally, a set of the fixing slots are spliced ​​into a circular shape.

[0013] The technical solution of this utility model has the following beneficial effects: When it is necessary to protect the positive and negative terminals of the inverter, the operator squeezes the handle and moves it to the opposite side, causing the protective plate to drive the slider to squeeze the telescopic spring through the limiting groove and the limiting rod, connecting the photovoltaic wire to the positive and negative terminals of the inverter and the cable to the inverter. Then the operator releases the handle, allowing the fixing groove to limit the photovoltaic wire and the cable, thereby facilitating the protection of the positive and negative terminals of the inverter. This prevents damage to the slot and the connected wiring in the absence of protection, and also prevents the slot from being accidentally touched when it is not in use, which poses a certain safety risk. Attached Figure Description

[0014] 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the overall structure of a string photovoltaic inverter according to an embodiment of the present invention;

[0016] Figure 2 This is a bottom view of a string photovoltaic inverter according to an embodiment of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0019] Reference numerals: 1. Inverter body; 2. Top plate; 3. Enclosure; 4. Protective components; 41. Partition; 42. Limiting groove; 43. Limiting rod; 44. Slider; 45. Protective plate; 46. Telescopic spring; 47. Fixing groove; 48. Curtain; 49. Handle. Detailed Implementation

[0020] 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.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a string photovoltaic inverter.

[0024] like Figures 1 to 3 As shown, in one embodiment of the present invention, the string photovoltaic inverter includes an inverter body 1, a top plate 2 on the top of the inverter body 1, a enclosure 3 at the bottom of the inverter body 1, and a protective component 4 on the enclosure 3 for protecting the wiring terminals.

[0025] The protective component 4 includes a partition 41, a limiting groove 42, a limiting rod 43, a slider 44, a protective plate 45, a telescopic spring 46, a fixing groove 47, a curtain 48, and a handle 49. The partition 41 is located on the inner wall of the enclosure 3. The limiting groove 42 is formed on the enclosure 3 and the partition 41. The limiting rod 43 is located on the inner wall of the limiting groove 42. The slider 44 is sleeved on the limiting rod 43 and is slidably connected to the inner wall of the limiting groove 42. The protective plate 45 is located between the sliders 44. The telescopic spring 46 is located between the inner wall of the limiting groove 42 and the sliders 44. The fixing groove 47 is formed on the protective plate 45. The curtain 48 is located on the enclosure 3 and the protective plate 45. The handle 49 is located on the protective plate 45.

[0026] Specifically, the front of the inverter body 1 is equipped with an LCD screen that displays the operating status: the LCD screen can display the current operating mode of the inverter, such as normal operation, standby, fault, etc., allowing users to understand the real-time operating status of the equipment; parameter display: it can display key parameters of the inverter, such as input voltage, output voltage, current, power, frequency, etc., helping users to understand the performance and efficiency of the equipment; fault alarm: when the inverter malfunctions, the LCD screen will display the corresponding fault code or prompt information, making it convenient for users to find and deal with the problem in a timely manner; setting function: some inverters' LCD screens also support users to set parameters, such as output voltage, frequency, protection threshold, etc., making it convenient for users to adjust according to actual needs; energy consumption monitoring: some high-end inverters can display the energy consumption data of the equipment through the LCD screen, helping users understand the energy efficiency performance of the equipment.

[0027] Specifically, the bottom left end of the inverter body 1 is provided with inverter positive and negative terminals, which facilitate connection with the positive and negative poles of the photovoltaic panel module. The bottom right end of the inverter body 1 is provided with a cable limiting connector, which facilitates the limiting of the cable.

[0028] Specifically, there are multiple partitions 41 with intervals between them, which facilitates the limiting function of the protective plate 45.

[0029] Specifically, there are multiple protective plates 45, with two plates 45 forming a group, which facilitates the protection of the positive and negative terminals of the inverter and the cable limit joints.

[0030] Specifically, there are multiple fixing slots 47, and the multiple fixing slots 47 are grouped into two groups. A group of fixing slots 47 are spliced ​​together in a circular shape, which facilitates the limiting function of photovoltaic lines and cables.

[0031] Specifically, the working principle and usage process of this utility model are as follows:

[0032] When protection of the inverter's positive and negative terminals is required, the operator squeezes handle 49 and moves it to the opposite side. This causes the protective plate 45 to move the slider 44, which, through the limiting groove 42 and the limiting rod 43, compresses the telescopic spring 46, connecting the photovoltaic wire to the inverter's positive and negative terminals and the cable to the inverter. Then, the operator releases handle 49, allowing the fixing groove 47 to limit the photovoltaic wire and the cable, thus facilitating the protection of the inverter's positive and negative terminals. This prevents damage to the slots and connected wiring in the absence of protection, and also avoids the risk of accidental contact when the slots are not in use.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A string photovoltaic inverter, characterized in that, Includes an inverter body (1), the top of the inverter body (1) is provided with a top plate (2), the bottom of the inverter body (1) is provided with a enclosure (3), and the enclosure (3) is provided with a protective component (4) that can protect the wiring terminals. The protective component (4) includes a partition (41), a limiting groove (42), a limiting rod (43), a slider (44), a protective plate (45), a telescopic spring (46), a fixing groove (47), a curtain (48), and a handle (49). The partition (41) is located on the inner wall of the enclosure (3). The limiting groove (42) is formed on the enclosure (3) and the partition (41). The limiting rod (43) is located on the inner wall of the limiting groove (42). The slider (44) The protective plate (45) is disposed between the slider (44), the telescopic spring (46) is disposed between the inner wall of the limiting groove (42) and the slider (44), the fixing groove (47) is opened on the protective plate (45), the curtain (48) is disposed on the enclosure (3) and the protective plate (45), and the handle (49) is disposed on the protective plate (45).

2. The string photovoltaic inverter according to claim 1, characterized in that, The inverter body (1) is equipped with an LCD screen on the front side.

3. The string photovoltaic inverter according to claim 1, characterized in that, The inverter body (1) has positive and negative terminals at the bottom left end and a cable limiting connector at the bottom right end.

4. The string photovoltaic inverter according to claim 1, characterized in that, The number of partitions (41) is multiple, and there are gaps between them.

5. The string photovoltaic inverter according to claim 1, characterized in that, The number of the protective plates (45) is multiple, and the multiple protective plates (45) are in groups of two.

6. The string photovoltaic inverter according to claim 5, characterized in that, The number of the fixing slots (47) is multiple, and the multiple fixing slots (47) are in pairs.

7. The string photovoltaic inverter according to claim 6, characterized in that, A set of the fixing grooves (47) are spliced ​​into a circular shape.

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