CN220122406U - Distributed photovoltaic grid-connected box - Google Patents

Abstract

The utility model discloses a distributed photovoltaic grid-connected box which comprises a box body and an electric unit, wherein an overturning bracket is hinged to the middle part of the left side wall or the right side wall of the box body through an outer door hinge, electric elements of the electric unit are respectively fixed in the overturning bracket, and an inner bracket is fixed in the box body and positioned on the inner side of the overturning bracket and used for fixedly mounting a storage battery pack. The photovoltaic grid-connected box is designed to have multiple layers, the overturning bracket and the sliding block are adopted, the installation process of the storage battery pack and the inverter component is simple, the components are only required to be placed in corresponding storage areas and fixed, and the installation and maintenance efficiency of equipment is improved. Meanwhile, the circulation system achieves good heat dissipation effect of the photovoltaic grid-connected box, and stability and safety of system operation are improved.

Description

Distributed photovoltaic grid-connected box

Technical Field

0001. The utility model belongs to the technical field of photovoltaic grid-connected boxes, and particularly relates to a distributed photovoltaic grid-connected box.

Background

0002. Distributed photovoltaic power generation has gained widespread attention and development in recent years as a clean, renewable energy source. With the continuous maturity of photovoltaic technology, distributed photovoltaic power generation systems are widely used in the fields of residential houses, industrial and commercial buildings, public facilities and the like. The distributed photovoltaic grid-connected box is used as one of key components of the photovoltaic power generation system, is responsible for converting direct-current electric energy into alternating-current electric energy, and realizes grid-connected power generation with a power grid.

0003. The existing distributed photovoltaic grid-connected box generally adopts an independent box body structure, and equipment such as a storage battery, an inverter and a controller are arranged in the existing distributed photovoltaic grid-connected box. These devices need to be installed in a specific location and connected by cables. However, the existing photovoltaic grid-connected box has certain defects in design, installation and maintenance, for example, the existing photovoltaic grid-connected box generally adopts complex structural design, has numerous parts, and increases production cost and manufacturing difficulty; the traditional photovoltaic grid-connected box is complex in installation process, each part needs to be accurately positioned and fixed, the time consumption is long, and the engineering progress is influenced; because the existing photovoltaic grid-connected box is complex in structure, a large number of parts are required to be disassembled in the maintenance process, and the maintenance cost and time are increased; in the operation process of the existing photovoltaic grid-connected box, heat generated by internal equipment is large, and if heat dissipation is poor, the equipment can be overheated, so that the stability and the safety of a system are affected.

Disclosure of Invention

0004. In order to solve the problems, the utility model provides a distributed photovoltaic grid-connected box, which aims to improve the performances of the distributed photovoltaic grid-connected box in the aspects of simplified structure, convenient installation, convenient maintenance, excellent heat dissipation performance, excellent safety performance and the like.

0005. The utility model solves the technical problems by adopting the scheme that: the utility model provides a distributed photovoltaic grid-connected box, includes box and electrical unit, is located left side wall or right side wall middle part at the outer inboard of door of box and articulates through outer door hinge has the upset support, and each electrical component of electrical unit is fixed in the upset support respectively, in the box and be located the upset support inboard, is fixed with the inner support and is used for fixed mounting storage battery.

0006. Further, one side of the turnover support is hinged with the inner wall of the left side wall or the right side wall through an inner hinge, and a lock catch is arranged on the other side of each turnover support, so that the turnover support can be locked with the inner wall of the right side wall or the left side wall, and related components and/or an inverter assembly area are/is fixed on the inner side of the turnover support and used for installing an inverter component.

0007. Further, fixed rails are arranged on the inner side walls of the overturning brackets, a plurality of sliding blocks are sequentially clamped on each fixed rail, and the switch assemblies are respectively fixed on the corresponding sliding blocks.

0008. Further, still include circulation system, it includes side air flue, bellows and gas vent, be provided with sealed welt at the inner wall of left side wall or right side wall to form side air flue, the inner wall of side air flue is opened there is the inner air hole, and the opposite side box lateral wall that is opposite with side air flue is opened there is the outer gas hole, is provided with inclosed bellows in the roof below at box top, this bellows with side air flue intercommunication, the lateral wall of this bellows is provided with the gas vent, and the draught fan is installed to the gas vent inner wall.

0009. The utility model has the beneficial effects that: the photovoltaic grid-connected box is designed to have multiple layers, the overturning bracket and the sliding block are adopted, the installation process of the storage battery pack and the inverter component is simple, the components are only required to be placed in corresponding storage areas and fixed, and the installation and maintenance efficiency of equipment is improved. Meanwhile, the circulation system achieves good heat dissipation effect of the photovoltaic grid-connected box, and stability and safety of system operation are improved.

0010. The design of the outer door and the turnover support enables the maintenance process of the equipment to be simple and rapid. When maintenance is needed, the outer door is only required to be opened, the overturning bracket is overturned outwards along the inner hinge, and inspection and maintenance of the electric element can be easily carried out.

Drawings

0011. FIG. 1 is a schematic perspective view of a grid-tie box of the present utility model;

FIG. 2 is another state diagram of FIG. 1;

FIG. 3 is a front view of FIG. 2;

fig. 4 is a top view of fig. 1.

0012. Reference numerals in the drawings: the electric power unit comprises a box body 1, an electric unit 2, a circulating system 3, a bottom plate 11, a left side wall 12, a right side wall 13, a top plate 14, an outer door 15, a lock 16, an outer door hinge 17, an inner bracket 18, a storage battery storage area 19, a turnover bracket 21, a switch assembly 22, a sliding block 23, a fixed rail 24, a lock catch 25, an inverter assembly area 26, an inner hinge 27, a side air channel 31, an inner air hole 32, an outer air hole 33, an air box 34 and an air outlet 35.

Description of the embodiments

0013. The utility model will be further described with reference to the drawings and examples.

Examples

0014. A distributed photovoltaic grid-connected box comprises a box body 1 and an electric unit 2, and is characterized in that,

the case 1 includes a bottom plate 11, a left side wall 12, a right side wall 13, a top plate 14, an outer door 15, a lock 16, an outer door hinge 17, an inner bracket 18, and a battery storage area 19.

0015. The bottom plate 11 is fixed on the bottoms of the left side wall 12 and the right side wall 13, the top plate 14 is fixed on the tops of the left side wall 12 and the right side wall 13, the box body further comprises a rear wall and an outer door 15 on the front side, the outer door 15 is hinged with the frame of the left side wall 12 or the right side wall 13 through an outer door hinge 17, and a lock 16 is arranged on the outer door 15. An inner bracket 18 is fixed between the left and right side walls of the rear wall in the box body, and a storage battery storage area 19 is arranged between the adjacent inner brackets and is used for fixedly mounting a storage battery pack.

0016. The electrical unit 2 includes a flip bracket 21, a switch assembly 22, a slider 23, a fixed rail 24, a latch 25, and an inverter mounting area 26.

0017. One side of the turnover brackets 21 is hinged to the inner wall of the left side wall 12 or the right side wall 13 through an inner hinge 27, so that the turnover brackets 21 can be outwards turned along the inner hinge outside the box body after the outer door is opened, and a lock catch 25 is mounted on the other side of each turnover bracket 21 so as to be locked with the inner wall of the right side wall 13 or the left side wall 12, and related components 22 and or inverter assembly areas 26 are fixed on the inner side of the turnover brackets 21 for mounting inverter components.

0018. Further, a fixed rail 24 is mounted on the inner side wall of the turnover bracket 21, a plurality of sliding blocks 23 are sequentially clamped on each fixed rail 24 (the inner side wall of each sliding block 23 is provided with a C-shaped clamping groove for clamping the fixed rail 24), and the switch assemblies 22 are respectively fixed on the corresponding sliding blocks.

0019. The circulation system 3 includes a side air passage 31, an inner air hole 32, an outer air hole 33, a bellows 34 and an exhaust port 35,

the inner wall of the left side wall 12 or the right side wall 13 is provided with a sealing lining plate, so as to form a side air passage 31, the inner wall of the side air passage 31 is provided with an inner air hole 32, the side wall of the other side box body opposite to the side air passage is provided with an outer air hole 33, a sealed air box 34 is arranged below the top plate 14 at the top of the box body, the air box 34 is communicated with the side air passage, the side wall of the air box 34 is provided with an air outlet 35, and an induced draft fan is arranged on the inner wall of the air outlet 35.

0020. The using process of the distributed photovoltaic grid-connected box comprises the following steps:

first, the distributed photovoltaic grid-tie box is fixed in place and the battery pack is installed in the battery storage area 19. Next, an inverter assembly is installed in the inverter assembly area 26, the slider 23 is installed on the fixed rail 24, and the flip bracket 21 is hinged to the inner wall of the left side wall 12 or the right side wall 13 by the inner hinge 27.

0021. After the storage battery pack and the inverter assembly are installed, the electrical unit 2 is wired, the storage battery pack is connected with the inverter assembly, and the photovoltaic power generation system and the power grid are connected.

0022. The side air passage 31 and the air box 34 of the circulating system 3 realize air flow through the inner air hole 32 and the outer air hole 33, the inner wall of the side air passage 31 is provided with the inner air hole 32, and the side wall of the other side box body opposite to the side air passage is provided with the outer air hole 33. The bellows 34 is communicated with the side air passage 31, the inner wall of the side air passage 31 is provided with an inner air hole 32, and the side wall of the other side box body opposite to the side air passage is provided with an outer air hole 33. The induced draft fan is installed to the gas vent 35 inner wall, when the induced draft fan starts, can follow gas vent 35 with hot air and discharge to realize the heat dissipation.

0023. After wiring is completed, the photovoltaic power generation system is started, the inverter component converts direct current into alternating current, and the alternating current is connected with a power grid through the switch component 22, so that grid-connected power generation is realized. When the electric energy generated by the external photovoltaic power generation system is insufficient to meet the load demand, the storage battery pack supplements the energy, and the stable operation of the system is ensured.

0024. In the daily maintenance process, the inspection and maintenance of the electrical components can be easily performed by only opening the outer door 15, unlocking the lock 16, and then outwards overturning the overturning bracket 21 along the inner hinge 27 to the outside of the box body. After the maintenance is completed, the turnover bracket 21 is locked on the inner wall of the left side wall 12 or the right side wall 13 again, the outer door 15 is closed, and the lock 16 is locked.

0025. The above detailed description of the present utility model is merely illustrative or explanatory of the principles of the utility model and is not necessarily intended to limit the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model.

Claims (4)

1. The utility model provides a distributed photovoltaic grid-connected box, including box (1) and electric unit (2), its characterized in that is located left side wall (12) or right side wall (13) middle part inside outer door (15) of box (1) and articulates through outer door hinge (17) has upset support (21), and each electric element of electric unit (2) is fixed in upset support (21) respectively, in the box and be located upset support (21) inboard, is fixed with inner bracket (18) and is used for fixed mounting storage battery.

2. The distributed photovoltaic grid-connected box according to claim 1, characterized in that one side of the turning support (21) is hinged to the inner wall of the left side wall (12) or the right side wall (13) through an inner hinge (27), a lock catch (25) is mounted on the other side of each turning support (21) so as to be locked with the inner wall of the right side wall (13) or the left side wall (12), and a switch assembly (22) and/or an inverter assembly area (26) are fixed on the inner side of the turning support (21) for mounting an inverter assembly.

3. The distributed photovoltaic grid-connected box according to claim 2, wherein a fixed rail (24) is installed on the inner side wall of the turnover support (21), a plurality of sliding blocks (23) are sequentially clamped on each fixed rail (24), and the switch assemblies (22) are respectively fixed on the corresponding sliding blocks.

4. The distributed photovoltaic grid-connected box according to claim 1, further comprising a circulation system (3) comprising a side air passage (31), a wind box (34) and an exhaust port (35), wherein a sealing lining plate is arranged on the inner wall of the left side wall (12) or the right side wall (13) so as to form the side air passage (31), an inner air hole (32) is formed in the inner wall of the side air passage (31), an outer air hole (33) is formed in the side wall of the other side box opposite to the side air passage, a sealed wind box (34) is arranged below the top plate (14) at the top of the box, the wind box (34) is communicated with the side air passage, the exhaust port (35) is arranged on the side wall of the wind box (34), and an induced draft fan is arranged on the inner wall of the exhaust port (35).