CN213367718U

CN213367718U - String type inverter for distributed photovoltaic power generation system

Info

Publication number: CN213367718U
Application number: CN202022378185.3U
Authority: CN
Inventors: 朱佳晨; 李源
Original assignee: Fengdexin Power Development Co ltd
Current assignee: Fengdexin Power Development Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-04
Anticipated expiration: 2030-10-22

Abstract

The utility model provides a group's string formula dc-to-ac converter for distributed photovoltaic power generation system, includes dc-to-ac converter, heating panel and fan, the first protection casing of fixation nut fixedly connected with is passed through to the dc-to-ac converter bottom, fixed welding in first protection casing inner wall bottom axle center department has the winding displacement board, the metallic channel has evenly been seted up to the winding displacement board upper surface. The utility model discloses a setting of heating panel, the heat dissipation of being convenient for, can avoid the downthehole intaking of radiating hole through the effect of second protection casing simultaneously, in order to prevent intaking in the dc-to-ac converter, in order to prevent causing the circuit in the dc-to-ac converter to be corroded, in order to influence the life of dc-to-ac converter, can arrange the circuit through setting up of winding displacement board, avoid the circuit to appear alternately disorderly condition, and be convenient for lift the heating panel off through setting up of heating panel, the convenience is cleared up fan and heat-conducting plate, the availability factor of group's string formula dc-to-ac.

Description

String type inverter for distributed photovoltaic power generation system

Technical Field

The utility model belongs to the technical field of photovoltaic power generation, especially, relate to a group's string dc-to-ac converter for distributed photovoltaic power generation system.

Background

An inverter is a power conditioning apparatus composed of semiconductor devices, mainly used for converting dc power into ac power, and generally includes a boost circuit and an inverter bridge circuit. The boosting circuit boosts the direct-current voltage of the solar battery to the direct-current voltage required by the output control of the inverter; the inverter bridge circuit equivalently converts the boosted direct-current voltage into alternating-current voltage with common frequency. The inverter is also called a power supply regulator, and can be divided into an independent power supply and a grid connection according to the application of the inverter in a photovoltaic power generation system. According to the waveform modulation mode, the inverter can be divided into a square wave inverter, a step wave inverter, a sine wave inverter and a combined three-phase inverter. As for inverters used for grid-connected systems, there are transformer type inverters and non-transformer type inverters according to the presence or absence of a transformer.

The radiating effect of group's string inverter among the prior art is not good, and the louvre all exposes in the external world, and inside can intake in overcast and rainy weather to can lead to inside circuit to be corroded, influence group's string inverter's life, greatly reduced group's string inverter's availability factor, so can't satisfy prior art needs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cluster formula dc-to-ac converter for distributing type photovoltaic power generation system through the setting of fan, heat-conducting plate, heat-conducting rod, louvre, winding displacement board, first protection casing and second protection casing, has solved can intake and be not convenient for radiating problem in the current cluster formula dc-to-ac converter of group.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a string inverter for distributed photovoltaic power generation system, which comprises an inverter, a heat dissipation plate and a fan, wherein the bottom end of the inverter is fixedly connected with a first protective cover through a fixing nut, a wire arranging plate is fixedly welded at the axle center of the bottom end of the inner wall of the first protective cover, a wire groove is uniformly arranged on the upper surface of the wire arranging plate, the bottom end of the wire groove runs through the wire arranging plate and the first protective cover, one side of the inverter is fixedly connected with a fixed plate through a fixing nut, two fixed plates are arranged, the heat dissipation plate is fixedly welded between the adjacent surfaces of the fixed plates, a groove is arranged at one side of the heat dissipation plate, the inner wall of the groove is fixedly connected with a fan through a fixing nut, heat dissipation holes are uniformly arranged at the corresponding groove of the, the heat dissipation plate is characterized in that a limiting sliding groove is formed in one side of the heat dissipation plate and located at the top end and the bottom end of the groove, a limiting sliding block is sleeved on the inner wall of the limiting sliding groove in a sliding mode, a heat conduction plate is fixedly welded between adjacent surfaces of the limiting sliding block, and a heat conduction rod is uniformly and fixedly welded on one side of the heat conduction plate.

Further, the wire arranging plate is of a circular structure.

Further, the wire groove is of an L-shaped structure.

Further, the first protection cover is of a U-shaped structure.

Furthermore, the heat dissipation holes are of L-shaped structures.

Further, the second protection casing is U type structure.

Furthermore, the inner wall of the front face of the limiting slide block is in threaded connection with a positioning nut, and one end of the positioning nut penetrates through the heat dissipation plate.

Furthermore, one end of the heat conducting rod penetrates through the heat conducting plate, and the other end of the heat conducting rod is inserted into the inner wall of the inverter in a sliding mode.

The utility model discloses following beneficial effect has:

the utility model can lead the heat in the inverter out to the heat conducting plate through the heat conducting rod by the arrangement of the heat radiating plate, the fan is started, the heat can be sucked into the heat radiating hole by the fan and is radiated to the outside, simultaneously, the water can be prevented from entering the heat radiating hole by the action of the second protective cover, simultaneously, the rainwater can be prevented from entering the inverter from the heat radiating hole by the arrangement of the heat radiating hole, so as to prevent the water from entering the inverter, so as to prevent the circuit in the inverter from being corroded, thereby preventing the service life of the inverter from being influenced, the port at the bottom end of the inverter can be prevented from being exposed to the outside by the arrangement of the first protective cover, thereby preventing the damage from appearing at the port, the circuit can be arranged by the arrangement of the wire arranging plate, thereby avoiding the cross disorder condition of the circuit, and the heat radiating plate can be detached conveniently, the service efficiency of the group string type inverter is greatly improved.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a side cut-away view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a front sectional view of the present invention;

FIG. 4 is a top view of the wire arranging plate of the present invention;

FIG. 5 is an enlarged schematic view of the area A in FIG. 1 according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. an inverter; 11. a first shield; 12. a wire arranging plate; 13. a wire guide groove; 2. a heat dissipation plate; 21. a fixing plate; 22. a second shield; 23. a groove; 24. a fan; 25. heat dissipation holes; 26. a limiting chute; 27. a limiting slide block; 28. a heat conducting plate; 29. a heat conducting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention relates to a string inverter for a distributed photovoltaic power generation system, which comprises an inverter 1, a heat dissipation plate 2 and a fan 24, wherein the bottom end of the inverter 1 is fixedly connected to a first protective cover 11 through a fixing nut, a wire arrangement plate 12 is fixedly welded at the axis of the bottom end of the inner wall of the first protective cover 11, the upper surface of the wire arrangement plate 12 is uniformly provided with a wire guide groove 13, the bottom end of the wire guide groove 13 penetrates through the wire arrangement plate 12 and the first protective cover 11, one side of the inverter 1 is fixedly connected to a fixing plate 21 through a fixing nut, the number of the fixing plates 21 is two, the heat dissipation plate 2 is fixedly welded between the adjacent surfaces of the fixing plates 21, one side of the heat dissipation plate 2 is provided with a groove 23, the inner wall of the groove 23 is fixedly connected to a fan, the bottom end of the heat dissipation hole 25 penetrates through the heat dissipation plate 2, the bottom end of the heat dissipation plate 2 is fixedly welded with the second protective cover 22, one side of the heat dissipation plate 2 is provided with a limiting sliding groove 26, the limiting sliding groove 26 is positioned at the top end and the bottom end of the groove 23, the inner wall of the limiting sliding groove 26 is slidably sleeved with a limiting sliding block 27, a heat conduction plate 28 is fixedly welded between adjacent surfaces of the limiting sliding blocks 27, one side of the heat conduction plate 28 is uniformly and fixedly welded with a heat conduction rod 29, when in use, the heat dissipation plate 2 is fixed at one side of the inverter 1 through a fixing nut, heat in the inverter 1 can be guided out to the heat conduction plate 28 through the heat conduction rod 29, then the fan 24 is started, the fan 24 can suck heat into the heat dissipation hole 25, heat can be conveniently dissipated to the outside, rainwater can be prevented from entering the heat dissipation hole 25 through the second protective cover, in order to prevent influencing the circuit in the dc-to-ac converter 1, be convenient for simultaneously take off heating panel 2, then can take out heat-conducting plate 28 and heat-conducting rod 29 through taking off set nut, be convenient for maintain and clear up fan 24 this moment, and be convenient for clear up heat-conducting plate 28 and heat-conducting rod 29, then all peg graft in wire casing 13 with the circuit cable, arrange the cable, avoid the circuit cross disorder to appear, then fix first protection casing 11 in 1 bottom of dc-to-ac converter through set nut, protect the port of 1 bottom of dc-to-ac converter, in case the port damage appears.

Wherein as shown in fig. 1, fig. 3 and fig. 5, the winding displacement board 12 is a circular structure, the wire groove 13 is an L-shaped structure, the first protection cover 11 is a U-shaped structure, the heat dissipation hole 25 is an L-shaped structure, the second protection cover 22 is a U-shaped structure, the inner wall of the front surface of the limit slider 27 is in threaded connection with a positioning nut, one end of the positioning nut penetrates through the heat dissipation plate 2, one end of the heat conduction rod 29 penetrates through the heat conduction plate 28, and the other end of the heat conduction rod 29 is inserted into the inner wall of the inverter 1 in a sliding manner.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A group string formula inverter for distributed photovoltaic power generation system, includes inverter (1), heating panel (2) and fan (24), its characterized in that: the bottom end of the inverter (1) is fixedly connected with a first protective cover (11) through a fixing nut, a wire guide groove (13) is uniformly formed in the upper surface of the wire guide groove (13) and penetrates through the wire guide plate (12) and the first protective cover (11) at the bottom end axle center of the inner wall of the first protective cover (11), a fixing plate (21) is fixedly connected with one side of the inverter (1) through a fixing nut, two fixing plates (21) are arranged on the upper surface of the wire guide plate (12), a heat dissipation plate (2) is fixedly welded between adjacent surfaces of the fixing plates (21), a groove (23) is formed in one side of the heat dissipation plate (2), a fan (24) is fixedly connected with the inner wall of the groove (23) through a fixing nut, heat dissipation holes (25) are uniformly formed in the inner wall of the heat dissipation plate (2) corresponding to the groove (23, heating panel (2) bottom fixed welding has second protection casing (22), spacing spout (26) have been seted up to heating panel (2) one side, spacing spout (26) are located recess (23) top and bottom, spacing spout (26) inner wall slides and has cup jointed spacing slider (27), fixed welding has heat-conducting plate (28) between spacing slider (27) looks proximal surface, the even fixed welding in heat-conducting plate (28) one side has heat-conducting rod (29).

2. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the wire arranging plate (12) is of a circular structure.

3. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the wire groove (13) is of an L-shaped structure.

4. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the first protective cover (11) is of a U-shaped structure.

5. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the heat dissipation holes (25) are of L-shaped structures.

6. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the second protective cover (22) is of a U-shaped structure.

7. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: the front inner wall of the limiting slide block (27) is in threaded connection with a positioning nut, and one end of the positioning nut penetrates through the heat dissipation plate (2).

8. The string inverter for a distributed photovoltaic power generation system of claim 1, wherein: one end of the heat conducting rod (29) penetrates through the heat conducting plate (28), and the other end of the heat conducting rod (29) is inserted into the inner wall of the inverter (1) in a sliding mode.