CN220796501U - Photovoltaic inverter direct current switch assembly structure - Google Patents

Abstract

The utility model discloses a photovoltaic inverter direct current switch assembly structure, which comprises a switch body, wherein a first fixed contact is distributed at the upper end of the switch body, and a second fixed contact correspondingly connected with the first fixed contact is distributed at the lower end of the switch body; the lower extreme of switch body sets up the circuit board, second stationary contact and circuit board detachable connection. The circuit board is arranged at the lower end of the switch body, the circuit board is directly connected with the second fixed contact, the connection of a cable is omitted, the space of the box is saved, the redundancy of a circuit is avoided, the circuit layout is clearer, no interference is generated between the circuit board and the second fixed contact, the circuit board and the second fixed contact are of a detachable connection structure, the later-stage circuit board and the switch body are convenient to detach, the maintainability of the later-stage product is high, and the circuit board or the switch body cannot be damaged in the detaching process.

Description

Photovoltaic inverter direct current switch assembly structure

Technical Field

The utility model belongs to the technical field of electrical appliance switches, and relates to a photovoltaic inverter direct current switch assembly structure.

Background

In photovoltaic inverter application scenario, the binding post of the first stationary contact of direct current switch is inserted to direct current cable, and by the binding post lead-out cable to circuit board of direct current switch second stationary contact, a large amount of cables are numerous and diverse occupy box space, and for avoiding the interference, line and line can not cross, need ribbon arrangement ligature, reduce installation effectiveness, current mounting means simultaneously, and later stage circuit board is inconvenient with the switch dismantlement, leads to the fact the damage to circuit board or switch easily.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a photovoltaic inverter direct current switch assembly structure.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the assembly structure of the direct current switch of the photovoltaic inverter comprises a switch body, wherein a first fixed contact is distributed at the upper end of the switch body, and a second fixed contact correspondingly connected with the first fixed contact is distributed at the lower end of the switch body;

the lower extreme of switch body sets up the circuit board, second stationary contact and circuit board detachable connection.

The utility model further improves that:

the second fixed contact protrudes out of the lower end face of the switch body.

The second fixed contact is connected with the circuit board through a bolt.

The second fixed contact comprises a vertical part and a horizontal part;

the vertical part is connected with the switch body, and the horizontal part is provided with a screw hole;

and the circuit board is provided with a mounting hole which is correspondingly connected with the screw hole.

The circuit board is provided with a positioning hole, and the positioning hole is used for positioning the switch body on the circuit board.

The lower end of each switch body is provided with two positioning pins.

The first fixed contacts are provided with a plurality of first fixed contacts, and an arc-isolating plate is arranged between every two adjacent first fixed contacts.

Twelve first fixed contacts and twelve second fixed contacts are respectively arranged.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses an assembly structure of a direct current switch of a photovoltaic inverter, wherein a circuit board is arranged at the lower end of a switch body, the circuit board is directly connected with a second fixed contact, the connection of a cable is omitted, the space of a box body is saved, the redundancy of circuits is avoided, the circuit layout is clearer, the interference between the circuit board and the second fixed contact is avoided, the circuit board and the second fixed contact are in a detachable connection structure, the later-stage circuit board and the switch body are convenient to detach, the maintainability of the later-stage product is high, and the circuit board or the switch body cannot be damaged in the detaching process.

Further, in the utility model, the second fixed contact protrudes out of the lower end face of the switch body, so that the connection of the circuit board is facilitated.

Furthermore, in the utility model, the second fixed contact is connected with the switch body through the bolt, so that the disassembly is more convenient, the assembly and disassembly efficiency is improved, and the damage to the switch body and the circuit board in the disassembly is reduced.

Furthermore, in the utility model, the second static contact comprises the vertical part and the horizontal part, and the vertical part and the horizontal part are matched, so that the transmission function of the second static contact can be realized, the connection structure with the circuit board is reserved, and the disassembly and assembly are more convenient.

Furthermore, in the utility model, the circuit board is provided with the positioning hole, and the positioning hole is used for positioning the switch body, so that the convenience of the installation of the circuit board and the switch body is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the connection between the bottom of the present utility model and a circuit board;

FIG. 3 is a side elevational structural view of the present utility model;

fig. 4 is an enlarged view of fig. 3 at a in accordance with the present utility model.

FIG. 5 is a schematic diagram of a first stationary contact connection of the present utility model;

fig. 6 is a schematic view of the installation of the present utility model.

Wherein: 0-a switch body; 1-a first fixed contact; 2-a second fixed contact; 3-arc-isolating plate; 4-a circuit board; 5-positioning holes; 6-locating pins; 7-fastening screws.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model is described in further detail below with reference to the attached drawing figures:

referring to fig. 1 to 6, an embodiment of the utility model discloses a photovoltaic inverter dc switch assembly structure, wherein a first pin connected with a first fixed contact is provided with a connecting terminal for connecting a wire. And a second pin connected with the second fixed contact protrudes out of the direct current switch body and is provided with a nut, and the second pin is fastened on the circuit board 4 through a screw. Need not the cable to connect, can save half cable and connecting terminal quantity, walk the line overall arrangement more clearly, improved installation effectiveness, can save quick-witted case internally mounted space and material cost simultaneously, concrete structure is:

referring to fig. 1 to 4, the embodiment of the utility model discloses a photovoltaic inverter direct current switch assembly structure, which is characterized by comprising a switch body, wherein a first fixed contact 1 is distributed at the upper end of the switch body, and a second fixed contact 2 correspondingly connected with the first fixed contact 1 is distributed at the lower end of the switch body; the lower extreme of switch body sets up circuit board 4, second stationary contact 2 is dismantled with circuit board 4 and is connected.

Further, in the embodiment of the utility model, the first static contact 1 and the second static contact 2 are distributed in a vertically staggered manner, the first static contact 1 is close to one side of the switch body 0, and the second static contact 2 is arranged on the other side close to the switch body 0, so that the first static contact 1 and the second static contact 2 form a vertically diagonally distributed mode.

Furthermore, in the embodiment of the utility model, twelve first fixed contacts 1 and twelve second fixed contacts 2 are arranged, and each first fixed contact 1 is separated by an arc barrier 3, so that electric arcs are avoided.

Referring to fig. 5, further, in the embodiment of the present utility model, when in use, the photovoltaic panel cable realizes the connection between the inside and the outside through the MC4 connection terminal installed on the side wall of the chassis, the input cable is connected to the connection terminal of the first static contact of the dc switch through current sampling and filtering, the cable terminal uses the common UT terminal, the first static contact 1 has a nut, and the cable terminal is fastened by using 12 screws.

Further, in the embodiment of the present utility model, the second fixed contact 2 protrudes from the end surface of the switch body 0, so that the second fixed contact 2 is convenient to connect with the circuit board 4, and the circuit board 4 and the second fixed contact 2 are detachably connected:

referring to fig. 3 to 4, the specific structure is that the second stationary contact 2 is an "L" type structure, including a vertical portion and a horizontal portion, the terminal surface of switch body 0 is connected to the vertical portion, the end connection horizontal portion of vertical portion has seted up the screw on the horizontal portion, the screw is used for connecting circuit board 4 and switch body 0, connect circuit board 4 and switch body 0 through fastening bolt 7, make both be detachable construction, the demountable installation of later stage switch body 0 of being convenient for, still can not cause the damage to circuit board 4 or switch body 0 in demountable installation, and adopt the mode of screw fastening to make direct current switch and circuit board reliably be connected, set up some via holes simultaneously in pad junction area, both improved the bonding strength of pad and substrate, pad current transmission capacity has been promoted again.

Further, in the embodiment of the present utility model, to ensure the levelness of the connecting end surface of the horizontal portion of the second stationary contact 2 with the circuit board 4, the phenomenon of poor contact caused by the position deviation of the horizontal portion and the circuit board 4 during installation is avoided, and the horizontal portion and the circuit board 4 should be kept parallel during installation.

Further, in the embodiment of the present utility model, two rows of the second stationary contacts 2 are distributed at the lower end of the switch body 0, the switches in each row are aligned, and the tolerance control tolerance of each row alignment is within the range of 0.2mm, so as to avoid the positional deviation with the circuit board 4, and avoid the problems of positional deviation, poor contact, etc. of the second stationary contacts 2 and the circuit board 4.

Furthermore, in the embodiment of the utility model, the switch body 0 is provided with the positioning pin 6 protruding from the end surface of the body, and the circuit board 4 is provided with the positioning hole 5 corresponding to the positioning pin 6, so that during connection, tooling equipment can be adopted for positioning and mounting, thereby being suitable for mass production, being beneficial to saving labor cost and improving mounting efficiency.

Referring to fig. 6, a plurality of switch bodies 0 may be installed at intervals on the circuit board 4 in a practical application scenario according to matching photovoltaic module or inverter power level requirements.

Further, in the embodiment of the present utility model, two positioning pins 6 are provided on each switch body 0.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The direct current switch assembly structure of the photovoltaic inverter is characterized by comprising a switch body (0), wherein a first fixed contact is distributed at the upper end of the switch body (0), and a second fixed contact (2) correspondingly connected with the first fixed contact (1) is distributed at the lower end of the switch body (0);

the lower end of the switch body (0) is provided with a circuit board (4), and the second fixed contact (2) is detachably connected with the circuit board (4);

the second fixed contact (2) protrudes out of the lower end face of the switch body (0);

the second fixed contact (2) comprises a vertical part and a horizontal part;

the vertical part is connected with the switch body (0), and the horizontal part is provided with a screw hole;

and the circuit board (4) is provided with a mounting hole correspondingly connected with the screw hole.

2. The photovoltaic inverter direct current switch assembly structure according to claim 1, wherein the second stationary contact (2) is connected with the circuit board (4) through bolts.

3. The photovoltaic inverter direct current switch assembly structure according to claim 1, wherein the circuit board (4) is provided with a positioning hole (5), and the positioning hole (5) is used for positioning the switch body (0) on the circuit board (4).

4. The photovoltaic inverter direct current switch assembly structure according to claim 1, wherein two positioning pins (6) are provided at the lower end of each switch body (0).

5. The photovoltaic inverter direct current switch assembly structure according to claim 1, wherein a plurality of first fixed contacts (1) are arranged, and arc baffles (3) are arranged between every two adjacent first fixed contacts (1).

6. The photovoltaic inverter direct current switch assembly structure according to claim 1, wherein twelve first fixed contacts (1) and twelve second fixed contacts (2) are respectively arranged.