CN223194271U

CN223194271U - Grid-connected box

Info

Publication number: CN223194271U
Application number: CN202422298595.5U
Authority: CN
Inventors: 相海涛; 杨佳
Original assignee: Suzhou Anbu New Energy Technology Co ltd
Current assignee: Suzhou Anbu New Energy Technology Co ltd
Priority date: 2024-09-20
Filing date: 2024-09-20
Publication date: 2025-08-05
Anticipated expiration: 2034-09-20

Abstract

The utility model provides a grid-connected box which comprises a box body, wherein a fuse, a first surge protector, a second surge protector, a first alternating current circuit breaker, an alternating current leakage circuit breaker, a second alternating current circuit breaker and an ammeter are arranged in the box body. The utility model discloses arrange each part group, form first subassembly and second subassembly, first subassembly and second subassembly distribute in the inside of box, the holistic volume of box has been reduced, and can provide overload and short-circuit protection photovoltaic module and module side's lightning protection for equipment, photovoltaic connector is connected to the direct current circuit of grid-connected box, and after the fuse protection, it is exported to the dc-to-ac converter, front end fuse is parallelly connected with first surge protector, can protect the direct current end from interference such as thunderbolt, the output of dc-to-ac converter has been connected after passing through miniature circuit breaker, it is exported to user's primitive block terminal, lower extreme circuit breaker is parallelly connected with second surge protector, can protect the AC end from interference such as thunderbolt.

Description

Grid-connected box

Technical Field

The utility model relates to the technical field of grid-connected boxes, in particular to a grid-connected box.

Background

The grid-connected box is a device for a photovoltaic power generation system, and is mainly used for safely transmitting direct current generated by a solar panel to an inverter and transmitting alternating current converted by the inverter to a power grid, a load or a local ammeter box. Grid-tie boxes typically include components such as dc protection switches, current transformers, power monitoring devices, and the like. The system has the main function of ensuring that the electric energy generated by the photovoltaic system can be safely and effectively integrated into a power grid, and simultaneously can monitor current and power. The grid-connected box plays a vital role in a photovoltaic power generation system and is one of important equipment for realizing renewable energy utilization;

At present, when some grid-connected boxes are designed, all devices are arranged on the upper part of the box body and the lower part of the box body along the vertical direction, and all the devices are positioned on one side of the box body far away from a cabinet door, when the number of the devices to be installed is large, larger installation space is needed, according to the arrangement mode, the height or the length of the box body needs to be increased, and the size of the grid-connected boxes is overlarge, so that transportation and carrying are difficult.

Disclosure of utility model

The utility model aims to provide a grid-connected box for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a grid-connected box, includes the box, the internally mounted of box has fuse, first surge protector, second surge protector, first alternating current circuit breaker, alternating current leakage circuit breaker, second alternating current circuit breaker and ammeter, the bottom of box is provided with photovoltaic connector, RJ connector, CT connector, first alternating current connector and second alternating current connector, the inside detachable of box is installed the apron, fuse, first surge protector, second surge protector, first alternating current circuit breaker, alternating current leakage circuit breaker, second alternating current circuit breaker and one side of ammeter all run through the apron;

The fuse, the first surge protector and the second surge protector are distributed side by side to form a first component, the first alternating current circuit breaker, the alternating current leakage circuit breaker, the second alternating current circuit breaker and the ammeter are distributed side by side to form a second component, and the first component is arranged below the second component.

Preferably, the inner wall of the box body is fixedly provided with a connecting seat, and the cover plate is fixedly arranged on the surface of the connecting seat through a screw.

Preferably, the surface of the box body is hinged with a box cover, and the joint of the box cover and the box body is connected through a snap lock.

Preferably, the bottom of the box body is also provided with a ventilation valve.

Preferably, the back of the box body is fixedly provided with a hanging frame, the hanging frame is hung on the surface of a mounting bracket, and the mounting bracket is fixedly arranged on the surface of a wall body.

Preferably, a bottom bracket is fixedly arranged at the back of the box body, and expansion bolt holes are formed in the surface of the bottom bracket.

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

The utility model discloses arrange each part group, form first subassembly and second subassembly, first subassembly and second subassembly distribute in the inside of box, the holistic volume of box has been reduced, and can provide overload and short-circuit protection photovoltaic module and module side's lightning protection for equipment, photovoltaic connector is connected to the direct current circuit of grid-connected box, and after the fuse protection, it is exported to the dc-to-ac converter, front end fuse is parallelly connected with first surge protector, can protect the direct current end from interference such as thunderbolt, the output of dc-to-ac converter has been connected after passing through miniature circuit breaker, it is exported to user's primitive block terminal, lower extreme circuit breaker is parallelly connected with second surge protector, can protect the AC end from interference such as thunderbolt.

Drawings

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

FIG. 2 is a schematic diagram of the front structure of the cover plate of the present utility model;

FIG. 3 is a schematic view of the bottom structure of the present utility model;

FIG. 4 is a schematic side view of the present utility model;

FIG. 5 is a schematic view of the back structure of the present utility model;

Fig. 6 is an electrical schematic of the present utility model.

The device comprises a fuse, a first surge protector, a second surge protector, a first alternating current breaker, a second alternating current breaker, a fourth alternating current leakage breaker, a fifth alternating current breaker, a sixth alternating current breaker, a seventh alternating current connector, a photovoltaic connector, an 8, an air vent valve, a 9, an RJ45 connector, a 10, a CT connector, a 11, a first alternating current connector, a 12, a second alternating current connector, a 13, an ammeter, a 14, a connecting seat, a 15, a cover plate, a 16, a box body, a 17, a box cover, a 18, a snap lock, a 19, a hanging bracket, a 20, a mounting bracket, a 21, a bottom bracket, a 22 and an expansion bolt hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Referring to fig. 1-6, the utility model provides a grid-connected box, including box 16, box 16 internally mounted has fuse 1, first surge protector 2, second surge protector 3, first ac circuit breaker 4, ac leakage circuit breaker 5, second ac circuit breaker 6 and ammeter 13, box 16's bottom is provided with photovoltaic connector 7, RJ45 connector 9, CT connector 10, first ac connector 11 and second ac connector 12, box 16's inside is detachably installs apron 15, fuse 1, first surge protector 2, second surge protector 3, first ac circuit breaker 4, ac leakage circuit breaker 5, second ac circuit breaker 6 and ammeter 13's one side all runs through apron 15, box 16's bottom still is provided with ventilation valve 8, fuse 1, first surge protector 2 and second surge protector 3 distribute side by side and form first subassembly, first ac circuit breaker 4, ac leakage circuit breaker 5, second ac circuit breaker 6 and ammeter 13 distribute side by side and form second subassembly, set up in the below of second subassembly.

Referring to fig. 1, 2 and 3, the components are connected to a direct current loop of a grid-connected box, protected by a fuse 1 and then output to an inverter, the direct current loop is provided with surge protection, the output of the inverter is connected to an alternating current loop of the grid-connected box, the output of the inverter is connected to an original distribution box of a user after passing through a circuit breaker, the output of the Backup of the inverter is connected to an alternating current loop of the grid-connected box, the output of the Backup of the inverter is connected to an important load after passing through the circuit breaker, an ammeter 13 is built in the grid-connected box, data such as electric quantity and the like are collected through a CT transformer, the data are transmitted to the ammeter 13 through a CT connector 10 at the bottom of a box body 16, the ammeter 13 is communicated with the inverter through an RJ45 connector 9, surge protection is configured on the alternating current side of the grid-connected box, and the front end of the surge protector is provided with Backup protection.

It should be noted that, the box 16 is made of a metal material, the cover plate 15 is made of a non-metal material, the material is made of a flame retardant material with a flame retardant rating of UL94-V0, the material meets the Rohs standard requirement, the overall protection rating of the box 16 is not lower than IP54, the outdoor use environment can be met, wires required to be used in the box 16 should be made of wires with UL1015 standard, UL authentication is provided, the wire diameter is matched with the current carried, all interfaces connected with the outside on the box 16 are plug-in interfaces, and the protection rating of all plug-in connectors should not be lower than IP54. All plugs should be provided with CE authentication.

The inner wall of the box 16 is fixedly provided with a connecting seat 14, a cover plate 15 is fixedly arranged on the surface of the connecting seat 14 through a screw, a box cover 17 is hinged to the surface of the box 16, and the joint of the box cover 17 and the box 16 is connected through a snap lock 18.

Referring to fig. 1 and 2, all the components and the internal wiring are below the cover plate 15, only the operating handle of the circuit breaker, the operating handle of the fuse 1, the first surge protector 2, the second surge protector 3, the display screen of the ammeter 13 and the operating keys are left, the cover plate 15 and the box 16 are tightly combined, the gap is not more than 2mm, the box 16 and the box cover 17 can be conveniently connected by the setting of the snap lock 18, and the normal inspection of the box 16 by workers can not be influenced while the internal components of the box 16 are protected by the box cover 17.

The back of the box 16 is fixedly provided with a hanging frame 19, the hanging frame 19 is hung on the surface of a mounting bracket 20, the mounting bracket 20 is fixedly arranged on the surface of a wall body, the back of the box 16 is fixedly provided with a bottom bracket 21, and the surface of the bottom bracket 21 is provided with expansion bolt holes 22.

Referring to fig. 4 and 5, the whole box 16 is installed by hanging, and can be installed on a wall, and it is required to ensure that the side of the surface of the box 16, where the access hole is provided, is downward, and is prohibited from tilting to the left and right, the front and rear tilt should not exceed 30 °, the installing support 20 is fixed on the wall surface by an expansion bolt, and then the hanging frame 19 is installed on the back of the box 16 and then hung on the top of the installing support 20, so that the box 16 naturally sags by self gravity, and at this time, the box 16 can drive the bottom support 21 to abut against the wall surface, and at this time, the bottom support 21 can be continuously fixed on the wall surface by the expansion bolt, thereby completing the installation of the box 16.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The grid-connected box comprises a box body (16) and is characterized in that a fuse (1), a first surge protector (2), a second surge protector (3), a first alternating current breaker (4), an alternating current leakage breaker (5), a second alternating current breaker (6) and an ammeter (13) are arranged in the box body (16), a photovoltaic connector (7), an RJ45 connector (9), a CT connector (10), a first alternating current connector (11) and a second alternating current connector (12) are arranged at the bottom of the box body (16), a cover plate (15) is detachably arranged in the box body (16), and one sides of the fuse (1), the first surge protector (2), the second surge protector (3), the first alternating current breaker (4), the alternating current leakage breaker (5), the second alternating current breaker (6) and the ammeter (13) penetrate through the cover plate (15);

The fuse (1), the first surge protector (2) and the second surge protector (3) are distributed side by side to form a first component, the first alternating current circuit breaker (4), the alternating current leakage circuit breaker (5), the second alternating current circuit breaker (6) and the ammeter (13) are distributed side by side to form a second component, and the first component is arranged below the second component.

2. The grid-connected box according to claim 1, wherein the inner wall of the box body (16) is fixedly provided with a connecting seat (14), and the cover plate (15) is fixedly arranged on the surface of the connecting seat (14) through screws.

3. A grid-connected cabinet according to claim 1, wherein the surface of the cabinet (16) is hinged with a cabinet cover (17), and the connection part of the cabinet cover (17) and the cabinet (16) is connected through a snap lock (18).

4. The grid-connected box according to claim 1, wherein the bottom of the box body (16) is further provided with a ventilation valve (8).

5. The grid-connected box according to claim 1, wherein a hanging frame (19) is fixedly arranged at the back of the box body (16), the hanging frame (19) is hung on the surface of a mounting bracket (20), and the mounting bracket (20) is fixedly arranged on the surface of a wall body.

6. The grid-connected box according to claim 5, wherein a bottom bracket (21) is fixedly arranged on the back of the box body (16), and expansion bolt holes (22) are formed in the surface of the bottom bracket (21).