CN220475118U - Inverter and photovoltaic system - Google Patents

Abstract

The application discloses an inverter and photovoltaic system belongs to photovoltaic power generation technical field. The inverter includes: a case; the electronic device is arranged in the box body; and the junction box is arranged below the box body and defines a space for wiring and/or extending out of the copper bars. According to the inverter provided by the embodiment of the application, the junction box is arranged below the inverter, so that the inverter can be conveniently detached when the inverter is independently maintained and replaced, the safety of cables and devices inside the inverter is ensured, and the material cost is reduced.

Description

Inverter and photovoltaic system

Technical Field

The application belongs to the technical field of photovoltaic power generation, and particularly relates to an inverter.

Background

Various electrical equipment is arranged in the photovoltaic system, wherein the electrical equipment comprises an inverter and a transformer, an electronic device inside the inverter and the transformer are electrically connected through a connecting wire between the inverter and the transformer, but at present, when the inverter is subjected to single-machine maintenance replacement in a connecting wire mode between the inverter and the transformer, the inverter is not easy to disassemble, so that the replacement maintenance efficiency is reduced, a copper bar path is long, the space utilization rate is low, and the material cost is high.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an inverter, which can be convenient to detach when the inverter is independently maintained and replaced, meanwhile, the safety of cables and devices inside the inverter is ensured, and the material cost is reduced.

In a first aspect, the present application provides an inverter comprising:

a case;

the electronic device is arranged in the box body;

and the junction box is arranged below the box body and defines a space for wiring and/or extending out of the copper bars.

According to the inverter provided by the embodiment of the application, the detachable junction box is arranged at the bottom of the second electrical equipment, so that the second electrical equipment can be detached conveniently, and the safety of the cable and devices inside the second electrical equipment can be ensured while the second electrical equipment is maintained and replaced independently.

According to one embodiment of the present application, further comprising:

the plurality of supporting legs are arranged at intervals at the bottom of the box body, and the junction box is arranged in an interval space formed among the plurality of supporting legs.

According to one embodiment of the application, the top of the junction box is provided with a first opening, and the top of the junction box is assembled on the bottom surface of the box body.

According to one embodiment of the application, the bottom and/or the side of the junction box is provided with a second opening.

According to one embodiment of the application, the junction box comprises an ac box, and the ac line and/or the interface of the copper bar of the inverter is located in the ac box.

According to one embodiment of the application, the junction box comprises a direct current box, and the interface of the direct current wire and/or the copper bar of the inverter is/are located in the direct current box.

According to one embodiment of the application, the junction box comprises a direct current box and an alternating current box, the interface of the direct current wire and/or the copper bar of the inverter is located in the direct current box, and the interface of the alternating current wire and/or the copper bar of the inverter is located in the alternating current box.

In a second aspect, the present application also provides a photovoltaic system, comprising:

a photovoltaic module;

the inverter of any one of the above, wherein the photovoltaic module is electrically connected to an input of the inverter.

According to one embodiment of the present application, the plurality of inverters is provided, the junction box includes at least one ac box, and each ac box corresponds to an interface of an ac line of at least one inverter.

According to one embodiment of the present application, the plurality of inverters is provided, the junction box includes at least one dc box, and each dc box corresponds to an interface of a dc line of at least one of the inverters.

According to one embodiment of the present application, the number of the inverters is plural, the number of the junction boxes is at least one, and each junction box corresponds to at least one interface of the inverter.

According to one embodiment of the present application, a plurality of the junction boxes are installed in one-to-one correspondence with a plurality of the inverters.

According to one embodiment of the present application, the junction box is one, and the interfaces of the plurality of inverters are all located in the same junction box.

According to one embodiment of the application, i, k junction boxes are installed in one-to-one correspondence with k inverters, and each of the remaining i-k junction boxes is installed in correspondence with a plurality of inverters, wherein k is greater than 1, and i-k is greater than or equal to 1.

According to one embodiment of the present application, the output of the inverter is electrically connected to the transformer.

According to one embodiment of the application, the output end of the transformer is electrically connected with the ring main unit.

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

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

fig. 1 is a schematic structural diagram of an inverter provided in an embodiment of the present application;

fig. 2 is one of exploded views of an inverter provided in an embodiment of the present application;

FIG. 3 is a second exploded view of an inverter provided in an embodiment of the present application;

FIG. 4 is a third exploded view of an inverter provided in an embodiment of the present application;

fig. 5 is a fourth exploded view of an inverter provided by an embodiment of the present application;

fig. 6 is a fifth exploded view of an inverter provided by an embodiment of the present application;

fig. 7 is a schematic diagram of the wiring of an inverter provided in an embodiment of the present application;

fig. 8 is one of schematic structural diagrams of the photovoltaic system provided in the embodiments of the present application;

FIG. 9 is a second schematic structural view of a photovoltaic system according to an embodiment of the present disclosure;

FIG. 10 is a third schematic structural view of the photovoltaic system according to the embodiments of the present application;

fig. 11 is an exploded view of a photovoltaic system provided in an embodiment of the present application.

Reference numerals:

the box body 100, the junction box 110, the alternating current box 111, the direct current box 112, the second opening 113, the cable 120, the connection space 130 and the supporting leg 140;

transformer 200, ring main unit 300, and integrated platform 400.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

An inverter and a photovoltaic system according to embodiments of the present application are described below with reference to fig. 1-11.

An embodiment of the present application provides an inverter, as shown in fig. 1-11, that includes a case 100, electronics, and a junction box 110.

As shown in fig. 1 to 6, a connection space 130 is provided at the bottom of the inverter case 100, and a junction box 110 is installed under the case 100, the junction box 110 defining a space for wiring and/or extending copper bars.

When the inverter is matched with other electrical equipment to form an integrated machine, wiring copper bars are arranged in the box body 100, and a junction copper bar is arranged in the junction box 110; when the inverter is used as a stand-alone, the junction box 110 has wiring copper bars therein.

As shown in fig. 1 to 11, the junction box 110 may have a rectangular structure, or may have other structures with planar upper and lower surfaces, such as a cylindrical structure, and the interior of the junction box 110 may have a hollow structure.

As shown in fig. 1-11, the junction box 110 may be placed on the ground, the box 100 may be directly supported on the top of the junction box 110, and the bottom of the box 100 may be detachably connected to the junction box 110 by a fastener or other structure.

As shown in fig. 1 to 11, the bottom of the inverter has a connection port mounted to the junction box 110, one end of the cable 120 is electrically connected to the connection port of the inverter, and the other end of the cable 120 passes through the junction box 110 to be electrically connected to other electrical devices.

As shown in fig. 1-11, the junction box 110 may be made of an insulating material to avoid electrical interference of the junction box 110 during operation of the inverter and other electrical devices electrically connected to the inverter.

As shown in fig. 9, the inverter and the junction box 110 are placed on the integration platform 400, and the integration platform 400 is placed on the ground, and a groove for communicating the inverter with other electrical devices is provided under the ground.

In the actual implementation process, as shown in fig. 1-11, one end of the cable 120 is electrically connected with a wiring port of the inverter, and the other end of the cable 120 passes through the junction box 110 and is electrically connected with a wiring port of other electrical equipment, because the junction box 110 is placed on the integration platform 400, and the upper surface of the junction box 110 supports the inverter, a closed space is formed between the bottom surface of the inverter and the bottom of the junction box 110, and after the inverter and the corresponding electrical equipment are connected, the part of the cable 120 located in the junction box 110 and the connection part of the cable 120 and the inverter are located in the closed space formed by the junction box 110, the inverter and the integration platform 400.

When the maintenance and replacement of the inverter are required, the inverter is supported above the junction box 110, and therefore, the inverter can be lifted alone after the connection between the inverter and the cable 120 is disconnected, and the maintenance and replacement of the inverter are performed.

By arranging the detachable junction box 110 at the bottom of the inverter, the inverter can be independently maintained and replaced after the connection part of the inverter and the cable 120 is disconnected; the inverter is supported on the upper surface of the junction box 110, so that the lower surface of the inverter is attached to the upper surface of the junction box 110, and the part of the cable 120 located in the junction box 110 and the connection part of the cable 120 and the inverter are located in a closed space, so that dust or other impurities are prevented from entering the inverter from the bottom to affect various circuits and devices, and in addition, the junction box 110 and the box 100 are separated, so that the height of the box 100 can be reduced, the copper bar path is shortened, and the material cost is reduced.

According to the inverter provided by the embodiment of the application, the junction box 110 is arranged below the inverter, so that the inverter can be conveniently detached when the inverter is independently maintained and replaced, the safety of the cable 120 and devices inside the inverter is ensured, and the material cost is reduced.

In some embodiments, as shown in fig. 1-11, the inverter further includes a plurality of supporting legs 140, the plurality of supporting legs 140 are spaced apart from each other and disposed at the bottom of the case 100, and the junction box 110 is mounted in a space formed between the plurality of supporting legs 140.

As shown in fig. 1 to 11, the number of the supporting legs 140 may be four, the four supporting legs 140 are respectively installed at four corners of the bottom of the inverter, the four supporting legs 140 are spaced apart from each other to form a space, the junction box 110 may be disposed in a middle portion of the space formed by the four supporting legs 140, or may be disposed in other portions of the space, and the space formed by the supporting legs 140 is the connection space 130 located below the inverter.

According to the inverter provided by the embodiment of the application, since the junction box 110 is of a hollow structure, the thickness of the junction box 110 is thinner, and the weight of the inverter is heavier, the supporting force to the inverter can be improved by arranging the base at the bottom of the inverter, so that the installation stability of the inverter is improved, and the damage to the junction box 110 caused by deformation and tilting of the inverter due to the fact that the junction box 110 is supported by the junction box 110 for a long time is avoided.

In some embodiments, as shown in fig. 3-6, the bottom and/or sides of junction box 110 are provided with second openings 113.

As shown in fig. 3 to 6, the bottom of the junction box 110 is provided with the second opening 113 at a position corresponding to the groove for the cable 120 under the ground, and since the number of the cables 120 for connecting the inverter and other electrical devices is plural, one second opening 113 capable of accommodating the lower plurality of cables 120 may be provided, and plural second openings 113 may be provided to accommodate the plurality of cables 120, respectively.

When the cable 120 does not pass through the trench under the ground, the second opening 113 may be provided at a side of the junction box 110, wherein the second opening 113 may be provided at one side or a plurality of sides of the junction box 110, or the second opening 113 may be provided at a bottom and a side of the junction box 110, wherein the bottom second opening 113 is used for ventilation.

In the actual implementation, when the wires are connected, one end of the cable 120 is electrically connected to the connection port of the inverter, and the other end of the cable 120 passes through the second opening 113 of the junction box 110 and is electrically connected to other electrical devices.

By providing the second opening 113 at the bottom or side of the junction box 110, it is possible to facilitate the passage of one end of the cable 120 for electrical connection with other electrical devices through the junction box 110, and to facilitate the operation of a worker.

In some embodiments, as shown in fig. 7, the height h between the junction of the cable 120 and the second electrical device 200 and the bottom surface of the junction box 110 satisfies: h is more than or equal to 400mm and less than or equal to 500mm.

As shown in fig. 7, the distance between the connection position of the cable 120 and the inverter and the bottom surface of the junction box 110 may be between 400mm and 500mm, that is, the height of the junction box 110 may be between 400mm and 500mm, so that the cable 120 passing through the groove may be bent after entering the underground groove, so that the distance between the connection position and the bending position of the cable 120 and the inverter is avoided to be shorter, resulting in larger breakage of the cable 120 when the cable 120 is bent, and meanwhile, the connection requirement is satisfied.

It should be noted that, the height h between the connection portion of the cable 120 and the inverter and the bottom surface of the junction box 110 may be selected in other suitable ranges according to the requirement.

In some embodiments, the top of the junction box 110 has a first opening, and the top of the junction box 110 is fitted to the bottom surface of the inverter.

The junction box 110 may have a concave structure, that is, the first opening at the top of the junction box 110 extends to four sides of the junction box 110, the junction box 110 presents an open structure, and at this time, the upper surfaces of the four sides of the junction box 110 are all attached to the inverter, so as to achieve sealing.

Or the cross-sectional area of the first opening is set to be larger than the whole cross-sectional area of the connection part of all the cables 120 and the inverter and smaller than the cross-sectional area of the top of the junction box 110, at this time, the connection part of the cables 120 and the inverter is positioned in the first opening, and the outer surface of the first opening is attached to the bottom surface of the inverter, so that sealing is realized, and sealing fit between the junction box 110 and the inverter can be realized in other modes.

By providing the first opening, the connection operation between the cable 120 and the inverter can be facilitated, and meanwhile, the sealing fit between the junction box 110 and the inverter can prevent dust or other impurities from entering the inverter from the first opening to cause the influence on the electronic devices.

In some embodiments, as shown in fig. 1-11, junction box 110 includes a dc box 112 and/or an ac box 111, with the interfaces of the dc lines and/or copper bars of the inverter being located at dc box 112 and the interfaces of the ac lines and/or copper bars of the inverter being located at ac box 111.

As shown in fig. 1 to 11, in some embodiments, the junction box 110 may include a dc box 112 and an ac box 111, where the interface of the dc line and/or the copper bar of the inverter is located in the dc box 112, the interface of the ac line and/or the copper bar of the inverter is located in the ac box 111, and the dc box 112 and the ac box 111 may be in rectangular structures, or may be in a truncated cone structure or other shape structures, and the dc box 112 and the ac box 111 are installed at the bottom of the inverter, and may be arranged side by side, or may be diagonally arranged or otherwise arranged.

In other embodiments, the junction box 110 may include an ac box 111, the ac line and/or the interface of the copper bar of the inverter may be located within the ac box 111, and in the case where the junction box 110 includes the ac box 111, the top of the ac box 111 may be provided with a first opening, and the bottom and/or side of the ac box 111 may be provided with a second opening 113.

In other embodiments, the junction box 110 may include a dc box 112, the interfaces of the dc lines and/or copper bars of the inverter being located within the dc box 112, and in the case where the junction box 110 includes the dc box 112, the top of the dc box 112 may be provided with a first opening, and the bottom and/or sides of the dc box 112 may be provided with a second opening 113.

In the actual implementation process, one end of the direct current wire is electrically connected with the interface of the direct current wire of the inverter, the other end of the direct current wire sequentially passes through the first opening, the internal hollow structure and the second opening 113 of the direct current box 112 and then is electrically connected with the interface of other electrical equipment, and the connection part of the direct current wire and the inverter is positioned in the direct current box 112; one end of the alternating current line is electrically connected with an interface of the alternating current line of the inverter, the other end of the alternating current line sequentially penetrates through the first opening, the inner hollow structure and the second opening 113 of the alternating current box 111 and is electrically connected with an interface of other electrical equipment, the connecting position of the alternating current line and the inverter is located in the alternating current box 111, and if the electric connection is achieved by using copper bars, the interface of the copper bars is located in the corresponding direct current box 112 or the alternating current box 111.

It will be appreciated that the dc box 112 and the ac box 111 are both installed in the connection space 130 below the box 100, that is, the space of the ac and dc of the inverter is shared, and the space of the inverter is saved and the material cost is reduced compared to the space of the ac and dc which are separately provided.

By dividing the junction box 110 into the ac box 111 and the dc box 112, the cables 120 connecting the inverter and other electrical devices can be arranged in ac and dc partitions so that the cables 120 can be quickly overhauled by later workers, and the space can be saved by sharing the ac and dc space of the inverter.

As shown in fig. 8-11, the embodiment of the present application further provides a photovoltaic system, where the photovoltaic system includes a photovoltaic module and an inverter as in any one of the embodiments above, and the photovoltaic module is electrically connected to an input terminal of the inverter.

In an actual implementation process, the transformer 200 and the inverter are both mounted on the integrated platform 400, and the photovoltaic module converts solar energy into electric energy, and inputs the electric energy into the inverter, and converts direct current into alternating current through the inverter and outputs the alternating current to corresponding electrical equipment.

According to the photovoltaic system provided by the embodiment of the application, by adopting the inverter of any one of the embodiments, the inverter can be detached conveniently, and the safety of the cable 120 and devices inside the inverter can be ensured while the inverter is maintained and replaced independently.

In some embodiments, as shown in fig. 8-11, the photovoltaic system further includes a transformer 200, with the output of the inverter electrically connected to the transformer 200.

As shown in fig. 8-11, one end of a dc line of the inverter is electrically connected to an interface of the dc line of the inverter, and the other end of the dc line sequentially passes through the first opening, the internal hollow structure, the second opening 113 and the underground trench of the dc box 112 and is electrically connected to an interface of the transformer 200; one end of an alternating current line of the inverter is electrically connected with an interface of the alternating current line of the inverter, and the other end of the alternating current line sequentially passes through the first opening, the internal hollow structure and the second opening 113 of the alternating current box 111 and is electrically connected with the interface of the transformer 200.

Through the arrangement of the transformer 200, the voltage output by the inverter can be converted into voltages with different values, so as to adapt to different requirements.

In some embodiments, as shown in fig. 9, the photovoltaic system further comprises a ring main unit 300, and the output end of the transformer 200 is electrically connected to the ring main unit 300.

As shown in fig. 9, the inverter, the transformer 200 and the ring main unit 300 are all installed on the integrated platform 400, and by setting the ring main unit 300, the distribution reliability can be improved when distribution to systems such as industrial and mining enterprises, residential communities, ports and high-rise buildings.

In some embodiments, the inverter is multiple, and the junction box 110 includes at least one ac box 111, each ac box 111 corresponding to an interface of an ac line of at least one inverter.

The present embodiment will be described in detail below according to four different schemes.

1. The plurality of inverters are mounted in one-to-one correspondence with the plurality of ac boxes 111.

There may be 3 inverters, or there may be 3 ac boxes 111, and one ac box 111 is installed under each inverter.

2. Some of the plurality of inverters are mounted in one-to-one correspondence with at least one ac box 111, and the interfaces of the ac lines of the remaining inverters are located in the same ac box 111.

For example, there may be 4 inverters, and there are 3 ac boxes 111, where 2 inverters are installed in one-to-one correspondence with 2 ac boxes 111, and the interfaces of the ac lines of the remaining 2 inverters are all located in the 3 rd ac box 111.

3. Some of the plurality of inverters are mounted in one-to-one correspondence with at least one ac box 111, and each of the remaining ac boxes 111 is mounted in correspondence with the plurality of inverters.

For example, there may be 6 inverters, and there are 4 ac boxes 111, wherein 2 inverters are installed in one-to-one correspondence with 2 ac boxes 111, and the remaining 2 ac boxes 111 are installed in correspondence with 2 inverters, respectively.

4. The plurality of inverters are mounted corresponding to the same ac box 111.

For example, 3 inverters may be provided, 1 ac box 111 is provided, and interfaces of ac lines of the 3 inverters are all located in 1 ac box 111.

It should be noted that the number of inverters and ac boxes 111 is not limited, and different installation schemes may be selected according to different requirements.

By arranging at least two inverters, the efficiency of switching the AC/DC of the whole inverter can be improved, and meanwhile, a plurality of AC boxes 111 are correspondingly arranged with the plurality of inverters, so that the application range of the AC boxes 111 can be enlarged.

In some embodiments, the inverter is multiple, and the junction box 110 includes at least one dc box 112, each dc box 112 corresponding to an interface of a dc line of the at least one inverter.

The present embodiment will be described in detail below according to four different schemes.

1. The plurality of inverters are mounted in one-to-one correspondence with the plurality of dc boxes 112.

For example, there may be 3 inverters, or there may be 3 dc boxes 112, and one dc box 112 is installed under each inverter.

2. Some of the inverters are mounted in one-to-one correspondence with at least one dc box 112, and the interfaces of the ac lines of the remaining inverters are located in the same dc box 112.

For example, 4 inverters may be provided, and 3 dc boxes 112 are provided, where 2 inverters are installed in a one-to-one correspondence with 2 dc boxes 112, and interfaces of dc lines of the remaining 2 inverters are all located in the 3 rd dc box 112.

3. Some of the plurality of inverters are mounted in one-to-one correspondence with at least one dc box 112, and each of the remaining dc boxes 112 is mounted in correspondence with the plurality of inverters.

For example, there may be 6 inverters, and 4 dc boxes 112, where 2 inverters are installed in a one-to-one correspondence with 2 dc boxes 112, and the remaining 2 dc boxes 112 are installed in a correspondence with 2 inverters, respectively.

4. A plurality of inverters are installed corresponding to the same dc box 112.

For example, 3 inverters may be provided, 1 dc box 112 is provided, and the interfaces of the dc lines of the 3 inverters are all located in 1 dc box 112.

It should be noted that the number of inverters and dc boxes 112 is not limited, and different installation schemes may be selected according to different requirements.

By providing at least two inverters, the efficiency of switching the ac/dc of the inverter as a whole can be improved, and simultaneously, the plurality of dc boxes 112 are correspondingly installed with the plurality of inverters, so that the application range of the ac box 111 can be enlarged.

In some embodiments, the number of inverters is multiple, and the number of junction boxes 110 is at least one, each junction box 110 corresponding to an interface of at least one inverter.

By arranging a plurality of inverters, the efficiency of switching the whole inverter between alternating current and direct current can be improved, and meanwhile, a plurality of junction boxes 110 are correspondingly arranged with the plurality of inverters, so that the application range of the junction boxes can be enlarged.

In some embodiments, a plurality of junction boxes 110 are mounted in one-to-one correspondence with a plurality of inverters.

For example, there may be 3 inverters, or there may be 3 junction boxes 110, and one junction box 110 is installed under each inverter.

By installing the plurality of junction boxes 110 in one-to-one correspondence with the plurality of inverters, wiring of the plurality of inverters can be distinguished, and the later maintenance efficiency can be improved.

In some embodiments, the junction box 110 is one, and the interfaces of the plurality of inverters are all located in the same junction box 110.

For example, there may be 3 inverters, and the junction box 110 is provided with 1, and the interfaces of the 3 inverters are all located in 1 junction box 110.

By providing the interfaces of the plurality of inverters to all be located in the same junction box 110, the number of junction boxes 110 can be reduced, thereby reducing the production cost of the photovoltaic system to some extent.

In some embodiments, the number of junction boxes 110 is i, k junction boxes 110 are mounted in one-to-one correspondence with k inverters, and each junction box 110 in the remaining i-k junction boxes is mounted in correspondence with a plurality of inverters, respectively, wherein k >1, i-k is ≡1.

For example, there may be 6 inverters, and 4 junction boxes 110, wherein 2 inverters are installed in one-to-one correspondence with 2 junction boxes 110, and the remaining 2 junction boxes 110 are installed in correspondence with 2 inverters, respectively.

By arranging the inverter and the junction box 110 in the above-described mounting manner, the number of the junction boxes 110 can be reduced to some extent, thereby reducing the production cost.

In other embodiments, as shown in fig. 11, the number of inverters is 3, the junction box 110 includes 3 dc boxes 112 and 1 ac box 111, where the 3 dc boxes 112 are installed in a one-to-one correspondence with the 3 inverters, that is, the interfaces of the dc lines of the 3 inverters are respectively located in 3 different dc boxes 112, the interfaces of the ac lines of the 3 inverters are all located in the same ac box 111, and the ac lines of the 3 inverters are all electrically connected with the transformer 200 through the same ac box 111.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "transverse," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, "a first feature", "a second feature" may include one or more of the features.

In the description of the present application, the meaning of "plurality" is two or more.

In the description of this application, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact by another feature therebetween.

In the description of this application, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. An inverter, comprising:

a case;

the electronic device is arranged in the box body;

and the junction box is arranged below the box body and defines a space for wiring and/or extending out of the copper bars.

2. The inverter according to claim 1, further comprising:

the plurality of supporting legs are arranged at intervals at the bottom of the box body, and the junction box is arranged in an interval space formed among the plurality of supporting legs.

3. The inverter according to claim 1, wherein a top of the junction box is provided with a first opening, and the top of the junction box is fitted to a bottom surface of the case.

4. The inverter according to claim 1, wherein the terminal box is provided with a second opening at the bottom and/or the side.

5. The inverter of any of claims 1-4, wherein the junction box comprises an ac box, and wherein an interface of an ac line and/or a copper bar of the inverter is located at the ac box.

6. The inverter of any one of claims 1-4, wherein the junction box comprises a dc box, and wherein the interface of the dc lines and/or copper bars of the inverter is located in the dc box.

7. The inverter according to any one of claims 1-4, wherein the junction box comprises a dc box and an ac box, wherein the interface of the dc line and/or the copper bar of the inverter is located in the dc box, and wherein the interface of the ac line and/or the copper bar of the inverter is located in the ac box.

8. A photovoltaic system, comprising:

a photovoltaic module;

the inverter of any of claims 1-7, the photovoltaic assembly being electrically connected to an input of the inverter.

9. The photovoltaic system of claim 8, wherein the inverter is a plurality of the junction boxes including at least one ac box, each of the ac boxes corresponding to an interface of an ac line of at least one of the inverters.

10. The photovoltaic system of claim 8, wherein the plurality of inverters is provided, the junction box comprises at least one dc box, and each dc box corresponds to an interface of a dc line of at least one of the inverters.

11. The photovoltaic system of claim 8, wherein the number of inverters is a plurality, the number of junction boxes is at least one, and each junction box corresponds to an interface of at least one of the inverters.

12. The photovoltaic system of claim 11, wherein a plurality of the junction boxes are mounted in one-to-one correspondence with a plurality of the inverters.

13. The photovoltaic system of claim 11, wherein the junction box is one, and the interfaces of the plurality of inverters are all located in the same junction box.

14. The photovoltaic system of claim 11, wherein the number of junction boxes is i, k of the junction boxes are mounted in one-to-one correspondence with k of the inverters, and each of the remaining i-k of the junction boxes is mounted in correspondence with a plurality of the inverters, respectively, wherein k >1, i-k being equal to or greater than 1.

15. The photovoltaic system of any of claims 8-14, further comprising:

and the output end of the inverter is electrically connected with the transformer.

16. The photovoltaic system of claim 15, further comprising:

and the output end of the transformer is electrically connected with the ring main unit.