CN218783420U - Inversion all-in-one machine - Google Patents

Abstract

The utility model discloses an contravariant all-in-one, contravariant all-in-one includes: the high-voltage air cabinet comprises a bottom plate, a box body, an inverter, a transformer and a high-voltage air cabinet, wherein the box body is arranged on the bottom plate; the inverter is arranged on one side of the box body, the transformer is arranged in the box body, the low-voltage side of the transformer is electrically connected with the inverter, the high-pressure air cabinet is suitable for outdoor use, is positioned on two opposite sides of the box body together with the inverter and is arranged on the bottom plate, and the high-pressure air cabinet is electrically connected with the high-voltage side of the transformer. From this, through setting up the setting of integrating of bottom plate in order to realize transformer, dc-to-ac converter and highly-compressed air cabinet to set up the transformer in the box, can use under outdoor environment, satisfy under the prerequisite of protection requirement, need not to adopt the container to realize integrating the setting, can reduce the space and occupy, reduction in production cost, and the dismouting convenience is higher, can effectively reduce the maintenance cost in later stage.

Description

Inverter all-in-one machine

technical field

The utility model relates to the field of power distribution equipment, in particular to an inverter integrated machine.

Background technique

In recent years, in the construction of photovoltaic power plants, container-type inverters have successfully developed from little-known to the current mainstream photovoltaic inverter solutions. It is characterized by the use of containers, and all equipment is integrated into it at the factory stage, and only the civil engineering foundation is needed to fix the containers on site. The advantage of this kind of equipment is that the manufacturing period is short and the cost is low.

However, integrating inverters, transformers, switch cabinets, power distribution cabinets, etc. in a container, the cost of the container itself is high, and the installation and maintenance are difficult, and the subsequent maintenance costs are high.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an integrated inverter, which is less difficult to install and maintain, lower in cost and more reasonable in space occupation.

The inverter integrated machine according to the embodiment of the utility model includes: a bottom plate, a box body, an inverter, a transformer and a high-pressure air cabinet, the box body is arranged on the bottom plate; the inverter is arranged on the box One side of the body, the transformer is arranged in the box, and the low-voltage side of the transformer is electrically connected to the inverter, the high-pressure air cabinet is suitable for outdoor use, and is located with the inverter in the The two sides opposite to the box body are arranged on the bottom plate, and the high-pressure air cabinet is electrically connected to the high-voltage side of the transformer.

According to the inverter all-in-one machine of the embodiment of the utility model, the integrated setting of the transformer, the inverter and the high-pressure air cabinet is realized by setting the bottom plate, and then by setting the box body, and the transformer is set in the box body, it can be installed in the outdoor environment Use, under the premise of meeting the protection requirements, there is no need to use containers to realize integrated settings, which can reduce space occupation, reduce production costs, and have higher disassembly and assembly convenience, which can effectively reduce later maintenance costs.

According to some embodiments of the present utility model, the inverter integrated machine further includes: a protective box, the low-voltage side electrical connector of the inverter is arranged in the protective box, and is electrically connected to the low-voltage side of the transformer .

Further, the bottom plate includes: crossbeams and longitudinal beams connected end to end, support beams are also arranged between the crossbeams and the longitudinal beams, there is a gap between adjacent support beams, and the protective box is arranged on within the gap.

Further, a first protective member is provided between the protective box and the box body.

Further, a second protective member is provided between the high-pressure air cabinet and the box body.

Optionally, the inverter integrated machine further includes: a low-voltage power distribution cabinet, the low-voltage power distribution cabinet is arranged on the bottom plate, is arranged on the same side as the high-pressure air cabinet, and is electrically connected to the high-pressure air cabinet.

According to some embodiments of the present utility model, the box body has a plurality of side panels and a top cover detachably arranged above the side panels, and at least one of the side panels is provided with an openable and closable protective door.

Further, the box has an air inlet and an air outlet communicating with each other for cooling the transformer.

Further, the air inlet, the air outlet and the inverter are located on different sides of the box.

Further, a grille is arranged on the area of the air inlet, and a fan is arranged adjacent to the air outlet, and a third guard is arranged outside the air outlet.

In some embodiments, there are multiple inverters arranged in sequence.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a three-dimensional schematic diagram of an inverter integrated machine according to an embodiment of the present invention;

Fig. 2 is a schematic top view of an inverter integrated machine according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of a third guard according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of an angle of the box body according to the embodiment of the present invention;

Fig. 5 is a schematic diagram of another angle of the box according to the embodiment of the present invention.

Reference signs:

Inverter integrated machine 100,

Base plate 10, beam 11, longitudinal beam 12, gap 13,

Box 20, air inlet 21, air outlet 22, fan 23, low pressure side interface 24, high pressure side interface 25,

Inverter 30 , transformer 40 , high-pressure air cabinet 50 , first protection piece 60 , second protection piece 70 , low-voltage power distribution cabinet 80 , and third protection piece 90 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

The following describes an integrated inverter 100 according to an embodiment of the present invention with reference to FIGS. 1-5 .

As shown in FIG. 1 and FIG. 2 , the inverter integrated machine 100 according to the embodiment of the present invention includes: a bottom plate 10 , a box body 20 , an inverter 30 , a transformer 40 and a high-pressure air cabinet 50 .

Wherein, box body 20 is arranged on the bottom plate 10; The high voltage side is electrically connected with the high pressure air cabinet 50 .

Specifically, the inverter integrated machine 100 may include: at least one transformer 40 and at least one inverter 30, and a high-pressure air cabinet 50, the high-pressure air cabinet 50, the transformer 40 and the inverter 30 are all arranged on the base plate 10, And the transformer 40 is electrically connected with the inverter 30 and the high-pressure air cabinet 50 to form an integrated integrated power distribution equipment, so as to realize the requirement of inverter grid connection.

It should be pointed out that in order to improve the working reliability and safety of power distribution equipment, the integrated inverter 100 used in outdoor environments needs to meet a certain IP protection level (that is, it is protected against people approaching dangerous parts, placing fixed foreign objects or entering water). The level of protection provided by entry), although it can meet the protection requirements if it is installed in the integrated box, it occupies a large area, the cost is high, and it is difficult to disassemble, difficult to install and maintain, and the maintenance cost in the later period is high. The utility model is provided with a box body 20 on the bottom plate 10, and the box body 20 is used to accommodate the transformer 40. On the premise of meeting the protection requirements, compared with the container solution, the occupied area is smaller, the cost is lower, and the difficulty of disassembly and assembly is small , can reduce the later maintenance cost.

The high-pressure air cabinet 50 of the utility model embodiment is suitable for outdoor use. The high-pressure air cabinet 50 and the inverter 30 are located on opposite sides of the box body 20, and are arranged on the base plate 10. The high-voltage air cabinet 50 and the transformer 40 side electrical connections.

Specifically, the high-voltage side of the transformer 40 is electrically connected to the high-pressure air cabinet 50, and an interface through which the high-voltage side electrical connector (such as a cable) protrudes is correspondingly provided on the box body 20. After the high-voltage side electrical connector protrudes from the interface, it is connected to the high-pressure air The cabinet 50 is electrically connected, and the high-voltage air cabinet 50 and the inverter 30 are located on both sides of the box body 20, which can ensure that the low-voltage side and high-voltage side of the transformer 40 are located on both sides of the box body 20, so as to realize high and low voltage isolation and improve the integrated inverter. While improving the reliability and safety of the machine 100, it is also convenient to route cables on the low-voltage side and the high-voltage side, thereby improving space occupation.

It should be pointed out that the high-pressure air cabinet 50 suitable for outdoor use means that the high-voltage control cabinet 50 itself has high sealing performance and can meet the requirements of outdoor use.

According to the inverter integrated machine 100 of the embodiment of the present invention, the integrated arrangement of the transformer 40, the inverter 30 and the high-pressure air cabinet 50 is realized by setting the bottom plate 10, and then the box body 20 is set, and the transformer 40 is set in the box The body 20 can be used in an outdoor environment. Under the premise of meeting the protection requirements, there is no need to use containers to achieve integrated settings, which can reduce space occupation, reduce production costs, and have higher disassembly and assembly convenience, which can effectively reduce later maintenance costs. .

It should be pointed out that in the embodiment of the present utility model, when the low-voltage side and the low-voltage side, and the high-voltage side and the high-voltage side are electrically connected between adjacent electrical components, the electrical connection can be realized through copper bars, braided cables, wire harnesses, etc. The utility model does not specifically limit.

Further, the bottom plate 10 includes: a beam 11 and a longitudinal beam 12 connected end to end, and a supporting beam is arranged between the beam 11 and the longitudinal beam 12 , there is a gap 13 between adjacent supporting beams, and the protective box is arranged in the gap 13 .

Specifically, the base plate 10 may include two longitudinal beams 12 opposite to each other in the transverse direction, and two transverse beams 11 disposed opposite to each other in the longitudinal direction. The inside of the frame is filled with supporting beams, and the supporting beams can be arranged at intervals in the longitudinal direction; the supporting beams can also be arranged at intervals in the transverse direction; A plurality of them are arranged at intervals to form grid-like supporting veins to ensure the structural strength and stability of the bottom plate 10 .

Furthermore, installation holes or projection welding nuts can be set on the supporting beam, crossbeam 11, and longitudinal beam 12, and electrical equipment such as inverter 30 and transformer 40 can be fixed on the supporting beam, crossbeam 11 or longitudinal beam 12, and the inverter The low-voltage side of the inverter 30 is connected to the low-voltage side of the transformer 40, the electrical connector of the low-voltage side of the inverter 30 is connected to the low-voltage side of the transformer 40, and the electrical connector of the low-voltage side is arranged in a protective box, and the protective box is located on the adjacent support beam In the gap 13 between, on the one hand, the space occupation can be improved; on the other hand, the wiring position is located under the inverter 30, which is convenient for wiring, and the casing part of the inverter 30 can be above the low-voltage side electrical connector Shielding and protection can effectively improve the use safety of the inverter integrated machine 100 .

As shown in FIG. 2 , according to some embodiments of the present invention, the box body 20 has an air inlet 21 and an air outlet 22 communicating with each other for cooling the transformer 40 .

Specifically, one side of the box body 20 is provided with an air inlet 21, and the opposite side is provided with an air outlet 22 for cooling the transformer 40, and the air inlet 21 and the air outlet 22 are located on different sides of the box body 20 .

Thus, the airflow can be introduced through the air inlet 21, and the airflow can be discharged through the air outlet 22, so as to realize the forced air cooling and heat exchange of the transformer 40, improve the cooling effect of the transformer 40, and improve the working stability of the inverter integrated machine 100 and safety.

Exemplarily, the high-pressure air cabinet 50 and the inverter 30 are located on the left and right sides or the front and rear sides of the box body 20, and the corresponding air inlets 21 and air outlets 22 are located on the front and rear sides or the left and right sides of the box body 20, so that the air inlet The tuyere 21 and the air outlet 22 are spaced apart from the high-pressure air cabinet 50 and the inverter 30, which can prevent the heat dissipation airflow from acting on the inverter 30 or the high-pressure air cabinet 50, and can also prevent the area of the inverter 30 or the high-pressure air cabinet 50 The air with a higher temperature enters the box body 20. While improving the heat dissipation effect, it can avoid affecting the electrical components around the box body 20 during the heat dissipation process, so as to take into account the working stability of the inverter integrated machine 100 and the transformer. 40 thermal performance.

As shown in FIG. 3 , a third guard 90 is disposed outside the air outlet 21 .

Specifically, the fan can be arranged on the air outlet 21, or located outside the air outlet 21, and the outside of the fan is provided with a third protection piece 90, and the third protection piece 30 is fixed on the box body 20, which can ensure that the box body 20 can at least achieve IP54 protection. Level, the third protective part 90 can be constructed as a sheet metal material, with waterproof adhesive strips on it and dustproof cotton on the bottom to meet the outdoor use conditions, ensure that rainwater and foreign objects will not enter the inside of the box body 20, and improve the protection against the transformer 40. reliable protection.

Further, a grille is arranged on the area of the air inlet 21 , and a fan 23 is arranged adjacent to the air outlet 22 . Therefore, by setting the grille, foreign matter can be prevented from entering the box body 20 , and the setting of the fan 23 can realize forced air cooling and heat dissipation, and improve the heat dissipation effect on the transformer 40 .

According to some embodiments of the present utility model, the integrated inverter 100 further includes: a protective box, the low-voltage side electrical connector of the inverter 30 is arranged in the protective box, and is electrically connected to the low-voltage side of the transformer 40 .

That is to say, in order to further improve the use safety of the integrated inverter 100, a protective box can be provided, and the low-voltage side electrical connector (that is, the branch copper bar used by the inverter 30 to connect with the transformer 40) is arranged in the protective box. Inside.

It can be understood that the inverter 30 of the embodiment of the utility model is suitable for outdoor use, and the inverter 30 that meets the requirements of use and corresponds to the IP protection level can be selected, and there can be multiple inverters 30, and multiple inverters Among 30, one is used as a master, and several others are used as slaves, and the master controls the slaves. For example, there are four inverters 30, one as a master, and three as slaves. The electrical connectors between the master and the slaves, The low-voltage side electrical connectors between the low-voltage side of the inverter 30 and the transformer 40 are all arranged in the protective box, which can improve the stability and safety of the electrical connection between multiple inverters 30 .

It should be pointed out that the low-voltage side electrical connector located in the protective box needs to protrude from the protective box at least partially so as to be electrically connected to the low-voltage side of the transformer 40, and a first A protective piece 60 can realize the protection between the inverter 30 and the box body 20, and ensure that the box body 20 meets the protection requirements, so that the inverter integrated machine 100 of the embodiment of the utility model is suitable for outdoor environments, and at the same time, it can avoid the protection Foreign matter or even water enters the box, which improves the safety of the inverter 30 in use.

Further, a second protective member 70 is provided between the high-pressure air cabinet 50 and the box body 20 .

Wherein, one side of the second protective piece 70 is connected with the box body 20, so as to block the high-pressure side interface 25 on the outside of the high-pressure side interface 25 on the box body 20, and the other side of the second protective piece 70 is connected with the high-pressure air cabinet 50 The cabinet body is connected to realize the sealing protection of the high pressure side.

It should be pointed out that, in some embodiments, both the first protective member 60 and the second protective member 70 can be configured as sheet metal parts, and are used to block corresponding interfaces, and the sheet metal parts are connected with the protective box and the box body 20 1. The area where the cabinets are connected is sealed to improve the protection effect; in other embodiments, the first protection member 60 and the second protection member 70 can also be configured as flexible seals, for example: rubber with a hollow setting to have a wiring channel The two ends of the material part are respectively connected with the protective box and the box body 20; or the box body 20 and the cabinet body are tightly fitted to achieve sealing.

Exemplarily, as shown in FIG. 4 and FIG. 5 , the box body 20 has a plurality of side panels and a top cover detachably arranged on the side panels, and at least one of the side panels is provided with an openable and closable protective door, such as front and rear sides. The protective door that can be opened and closed can be provided on the side, and there are at least two protective doors; the side of the box body 20 close to the inverter 30 is provided with a low-voltage side plate, and the low-voltage side plate is provided with a low-voltage side interface 24, and the low-voltage side interface 24 is used to connect the low-voltage side of the transformer 40 with the low-voltage electrical connector of the inverter 30. A sealing plate can be provided on the low-voltage side interface 24, and a first protective member 60 is provided between the low-voltage side interface 24 and the protective box, close to the high-voltage side. One side of the air cabinet 50 is provided with a high-voltage side side plate, and the high-voltage side side plate is provided with a high-voltage side interface 25. The high-voltage side interface 25 is used to connect the high-voltage side of the transformer 40 with the high-voltage side electrical connector of the high-voltage air cabinet 50. The high-voltage side A sealing plate can be provided on the interface 25, and a second protective piece 70 can be provided between the high-pressure side interface 25 and the high-pressure air cabinet 50; The communication connection between; the top of the box body is provided with a top cover, and the top cover is provided with anti-condensation cotton, and the top cover is detachable for the installation and use of the transformer 40. In the embodiment shown in Fig. 1 and Fig. 2, the inverter integrated machine 100 also includes: a low-voltage power distribution cabinet 80, the low-voltage power distribution cabinet 80 is arranged on the bottom plate 10, arranged on the same side as the high-pressure air cabinet 50, and connected to the high-pressure air cabinet 50 Cabinet 50 is electrically connected.

Specifically, the high-pressure air cabinet 50 and the low-voltage power distribution cabinet 80 need to be electrically connected, so they are arranged on the same side. Located on the other longitudinal side of the bottom plate 10, it facilitates the electrical connection between the high-voltage air cabinet 50 and the low-voltage distribution cabinet 80, reduces the length of the electrical connectors, reduces space occupation, and effectively reduces costs.

Of course, the structure of the integrated inverter 100 in the embodiment of the present utility model is not limited thereto. The layout is more compact and the space occupation is more reasonable.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

In the description of the present utility model, "plurality" means two or more.

In the description of the present utility model, "above" or "under" a first feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but through Additional characteristic contacts between them.

In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is high in level on the second feature.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (11)

1. An inverter integrated machine, characterized in that, comprising: Bottom plate (10); a box (20), the box (20) is arranged on the bottom plate (10); an inverter (30) and a transformer (40), the inverter (30) is arranged on one side of the box (20), the transformer (40) is arranged in the box (20), And the low-voltage side of the transformer (40) is electrically connected to the inverter (30); A high-pressure air cabinet (50), the high-pressure air cabinet (50) is suitable for outdoor use, and is located on the opposite sides of the box body (20) with the inverter (30), and is arranged on the bottom plate ( 10), the high-pressure air cabinet (50) is electrically connected to the high-voltage side of the transformer (40). 2. The inverter integrated machine according to claim 1, further comprising: a protective box, the low-voltage side electrical connector of the inverter (30) is arranged in the protective box, and is connected with the The low voltage side of the transformer (40) is electrically connected. 3. The inverter integrated machine according to claim 2, characterized in that, the base plate (10) comprises: a beam (11) and a longitudinal beam (12) connected end to end, and the beam (11) and the longitudinal beam (11) Supporting beams are also arranged between the beams (12), and there are gaps (13) between adjacent supporting beams, and the protective box is arranged in the gaps (13). 4. The inverter integrated machine according to claim 3, characterized in that, a first protection member (60) is arranged between the protection box and the box body (20). 5. The inverter integrated machine according to claim 1, characterized in that, a second protective member (70) is arranged between the high-pressure air cabinet (50) and the box body (20). 6. The inverter integrated machine according to claim 1, further comprising: a low-voltage power distribution cabinet (80), the low-voltage power distribution cabinet (80) is arranged on the bottom plate (10), and the The high-pressure air cabinet (50) is arranged on the same side, and is electrically connected with the high-pressure air cabinet (50). 7. The inverter integrated machine according to claim 1, characterized in that, the box body (20) has a plurality of side plates and a top cover detachably arranged above the side plates, at least one of the side plates A protective door that can be opened and closed is arranged on the board. 8. The inverter integrated machine according to claim 7, characterized in that, the box (20) has an air inlet (21) and an air outlet (22) communicating with each other, for the transformer (40) cooling. 9. The inverter integrated machine according to claim 8, characterized in that, the air inlet (21) and the air outlet (22) are located on different sides of the box (20). 10. The inverter integrated machine according to claim 8, characterized in that, a grille is arranged on the area of the air inlet (21), and a fan (23) is arranged adjacent to the air outlet (22), the A third guard (90) is arranged outside the air outlet (22). 11. The inverter integrated machine according to any one of claims 1-10, characterized in that there are multiple inverters (30) arranged in sequence.

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