CN219287381U - Inverter cabinet body, inverter and inversion boosting all-in-one machine - Google Patents

Abstract

The utility model discloses an inverter cabinet, an inverter and an inversion boosting integrated machine, wherein the inverter cabinet comprises: an ac output side and an ac output port; the alternating current output side is provided with a yielding space for placing the converging piece, the alternating current output port is used for installing an alternating current output end of the inverter, and the alternating current output port is positioned on a cabinet plate forming the yielding space in the inverter cabinet body. In the inverter cabinet body, the alternating current output side is provided with the abdication space for placing the converging piece, and the alternating current output port is positioned on a cabinet plate forming the abdication space in the inverter cabinet body, so that the alternating current output end arranged at the alternating current output port is ensured to be connected with the converging piece in the abdication space; and the converging piece occupies the reserved abdication space of the inverter cabinet body on the alternating current output side, compared with the prior art, the height of the inverter cabinet body is effectively reduced, the height of the inversion boosting integrated machine is reduced, and therefore the occupied space of the inversion boosting integrated machine is reduced.

Description

Inverter cabinet body, inverter and inversion boosting all-in-one machine

Technical Field

The utility model relates to the technical field of photovoltaic power generation, in particular to an inverter cabinet, an inverter and an inversion boosting integrated machine.

Background

In the photovoltaic power station, the inversion boosting integrated machine is popularized and applied due to the advantages of high integration level, low cost, quick installation and debugging and the like.

In the inversion boosting all-in-one, an inverter and a transformer are both arranged on an integrated platform, and an alternating current output end of the inverter is converged to a low-voltage side of the transformer through a converging piece.

In the inversion boosting all-in-one machine, the alternating current output end of the inverter extends out from the bottom end of the inverter, and the converging piece is located outside the inverter and located at the bottom end of the whole inverter, so that the height of the position of the whole inverter is higher, and the occupied space of the whole inversion boosting all-in-one machine is larger.

In summary, how to design the connection between the inverter and the transformer to reduce the space occupied by the inverter and boost integrated machine is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present utility model is to provide an inverter cabinet, an inverter and an inverter-boost integrated machine, so as to reduce the space occupied by the inverter-boost integrated machine.

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

an inverter cabinet, comprising: an ac output side and an ac output port; the alternating current output side is provided with a yielding space for placing a converging piece, the alternating current output port is used for installing an alternating current output end of an inverter, and the alternating current output port is positioned on a cabinet plate forming the yielding space in the inverter cabinet body.

Optionally, the yielding space penetrates through two sides of the inverter cabinet body, which are adjacent to the alternating current output side.

Optionally, the yielding space extends to a bottom end surface of the inverter cabinet body, and the bottom end surface is located at a side of the yielding space away from the ac output side.

Optionally, the ac output port is located at the top of the space of stepping down, a dc input port is provided on the bottom surface of the inverter cabinet body, and the dc input port is located at a side of the space of stepping down away from the ac output side.

Optionally, the ac output side is located at one side of the inverter cabinet in the length direction; and in the width direction of the inverter cabinet, the abdication space penetrates through the inverter cabinet.

Optionally, the inverter cabinet body includes at least one cabinet door, and one cabinet door is located at the ac output side.

Based on the inverter cabinet provided by the utility model, the utility model also provides an inverter, which comprises: the cabinet body and the alternating current output end; wherein, the cabinet body is the inverter cabinet body of any one of the above.

Based on the inverter provided by the utility model, the utility model also provides an inversion boosting integrated machine, which comprises: a transformer, a confluence member, and at least two inverters; the bus piece is electrically connected with the alternating current output end of each inverter and the low-voltage input end of the transformer, and the inverter is the inverter.

Optionally, the transformer has a low voltage input part electrically connected with the bus part, and the low voltage input part is at least one;

the distribution direction of any two inverters in the corresponding inverters and the low-voltage input piece is perpendicular to the low-voltage input piece; and/or, the distribution direction of any two inverters in the corresponding inverters and the low-voltage input piece is parallel to the low-voltage input piece.

Optionally, all the inverters are located on the same side of the transformer.

Optionally, all of the inverters are distributed on at least two sides of the transformer.

Optionally, all of the inverters are distributed on opposite sides of the transformer.

Optionally, the busbar comprises a busbar box and a busbar conductive part arranged in the busbar box, and the busbar conductive part is electrically connected with the alternating current output end and the low voltage input end.

Optionally, the inverter cabinet includes an air duct for cooling devices inside the inverter cabinet, and the air duct is communicated with the junction box.

Optionally, the junction box has a vent communicating with the air duct, and the junction box further has a vent plate capable of opening and closing the vent.

Optionally, the inverter cabinet includes a first cavity and a second cavity, and the first cavity is located at the top of the second cavity;

the air duct comprises: a first air duct located in the first cavity and a second air duct located in the second cavity;

the first air duct and the second air duct are relatively isolated, and the second air duct is communicated with the confluence box.

Optionally, at least one partition plate is arranged in the confluence box, the partition plate divides the inner cavity of the confluence box into at least two sub-cavities, and the sub-cavities are communicated with the air channels of the inverter corresponding to the sub-cavities.

Optionally, the partition is detachably disposed on the junction box.

In the inverter cabinet body provided by the utility model, the alternating current output side is provided with the abdication space, the abdication space is used for placing the converging piece, and the alternating current output port is positioned on a cabinet plate forming the abdication space in the inverter cabinet body, so that the alternating current output end arranged at the alternating current output port is ensured to be connected with the converging piece in the abdication space, and the converging of more than two inverters is ensured; and the converging piece occupies the reserved abdication space of the inverter cabinet body on the alternating current output side, compared with the prior art, the height of the inverter cabinet body is effectively reduced, the height of the inversion boosting integrated machine is reduced, and therefore the occupied space of the inversion boosting integrated machine is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is an isometric view of an inverter cabinet provided in an embodiment of the present utility model;

fig. 2 is a front view of an inverter cabinet provided in an embodiment of the present utility model;

fig. 3 is a bottom view of an inverter cabinet according to an embodiment of the present disclosure;

fig. 4 is an assembly view of an inverter and a bus member provided in an embodiment of the present utility model;

fig. 5 is another assembly view of an inverter and a bus member provided by an embodiment of the present utility model;

fig. 6 is a schematic heat dissipation diagram of an inversion and boosting integrated machine according to an embodiment of the present utility model;

fig. 7 is another schematic heat dissipation diagram of the inversion and boosting integrated machine according to the embodiment of the utility model;

fig. 8 is a schematic distribution diagram of a partition in an inversion and boosting integrated machine according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 10 is a schematic diagram of another structure of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 11 is a schematic diagram of another structure of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 12 is another schematic structural diagram of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 13 is another schematic structural diagram of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 14 is another schematic structural diagram of an inversion and boost integrated machine according to an embodiment of the present utility model;

fig. 15 is a schematic diagram of another structure of an inversion and boost integrated machine according to an embodiment of the present utility model.

In fig. 1-15:

10 is an inverter, 20 is a bus piece, and 30 is a transformer;

11 is an inverter cabinet body, 111 is an alternating current output side, 112 is a space of stepping down, 113 is a first cavity, 114 is a second cavity, 115 is a bottom end surface, 116 is an alternating current output port, 117 is a direct current input port, 118 is a cabinet door, 119 is a first cabinet plate, 1110 is a second cabinet plate, 12 is an alternating current output port, 13 is a direct current input port, 21 is a confluence box, 22 is a partition plate, 20a is a first confluence piece, and 20b is a second confluence piece.

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.

As shown in fig. 1 to 3, an inverter cabinet 11 provided in an embodiment of the present application is used for an inverter, and the inverter cabinet 11 includes: an ac output side 111 and an ac output 116.

Since the inverter cabinet 11 has an unnecessary space inside, the space occupied by the unnecessary space in the inverter cabinet 11 can be fully utilized in order to reduce the height of the inverter cabinet 11. As shown in fig. 4 and 5, the ac output side 111 has a space 112 for accommodating the bus bar 20. It should be noted that, the relief space 112 is located outside the inverter cabinet 11, and the relief space 112 has an opening into which the bus member 20 can enter, that is, the bus member 20 enters the relief space 112 from the opening. In some cases, the opening can also allow the manifold 20 to move out of the relief space 112.

The bus bar 20 is used to electrically connect the ac output terminal of the inverter 10 and the low voltage input terminal of the transformer. The size and shape of the relief space 112 may be designed according to the bus bar 20, which is not limited in this embodiment.

The ac output port 116 is used for installing an ac output port of the inverter 10, and the ac output port 116 is located on a cabinet board forming the relief space 112 in the inverter cabinet 11. It will be appreciated that the ac outlet 116 is opposite and in communication with the relief space 112.

In the inverter cabinet 11 provided by the embodiment of the application, the ac output side 111 has the space 112 for letting out, the space 112 for letting out is used for placing the bus bar 20, and the ac output port 116 is located on a cabinet board forming the space 112 for letting out in the inverter cabinet 11, so that the ac output end installed at the ac output port 116 is ensured to be connected with the bus bar 20 in the space 112 for letting out, thereby ensuring the bus bar of more than two inverters 10; moreover, the converging piece 20 occupies the reserved abdication space 112 of the inverter cabinet 11 at the alternating current output side 111, and compared with the prior art, the inverter cabinet has the advantages that the height of the inverter cabinet 11 is effectively reduced, the height of the inversion boosting integrated machine is reduced, and therefore the occupied space of the inversion boosting integrated machine is reduced.

In the prior art, because the converging piece is located the bottom of whole dc-to-ac converter, whole converging piece is sheltered from by the dc-to-ac converter. When the inverter needs maintenance and repair, the electrical connection between the inverter and the bus bar needs to be released. In order to release the electrical connection between the inverter and the bus bar, the inverter is removed first, which results in complex maintenance and repair of the inverter and low maintenance and repair efficiency of the inverter. In the inverter cabinet 11 provided by the embodiment of the application, since the converging piece 20 occupies the yielding space 112 reserved by the inverter cabinet 11 on the ac output side 111, the electrical connection between the converging piece 20 and the inverter 10 can be released in the yielding space 112, and the inverter 10 does not need to be removed when the inverter 10 needs to be maintained and repaired, so that the maintenance and repair of the inverter 10 are simplified, and the maintenance and repair efficiency of the inverter 10 is improved.

In some embodiments, to facilitate installation of the bus 20, the relief space 112 extends through both sides of the inverter cabinet 11 adjacent to the ac output side 111. As shown in fig. 1, when facing the ac output side 111, the relief space 112 penetrates the inverter case 11 on the left side of the ac output side 111 and on the right side of the ac output side 111.

In the above embodiment, when two or more inverters 10 are placed side by side, the relief spaces 112 of two adjacent inverters 10 communicate. In this way, the installation of the confluence member 20 is facilitated, and the inverter cabinet 11 is prevented from interfering with the installation of the confluence member 20. In practical situations, the yielding space 112 may alternatively penetrate through a side of the inverter cabinet 11 adjacent to the ac output side 111, or the yielding space 112 may not penetrate through two sides of the inverter cabinet 11 adjacent to the ac output side 111, which is not limited to the above embodiment.

In the inverter cabinet 11, the relief space 112 may extend to the bottom surface 115 of the inverter cabinet 11, or may not extend to the bottom surface 115 of the inverter cabinet 11. In some embodiments, to simplify the structure of the inverter cabinet 11, as shown in fig. 2 and 3, the relief space 112 extends to the bottom end surface 115 of the inverter cabinet 11, which can be understood as: the bottom end surface 115 of the inverter cabinet 11 is located on a side of the relief space 112 away from the ac output side 111.

In the prior art, because the converging piece is located the bottom of whole dc-to-ac converter, whole converging piece is sheltered from by the dc-to-ac converter. In the installation process, the bus piece is required to be installed on the integrated platform, then the inverter is hoisted on the integrated platform, and the installation sequence of the bus piece and the inverter cannot be reversed, so that the assembly flexibility of the inverter and the bus piece is lower. In the present application, since the abdication space 112 extends to the bottom end surface 115 of the inverter cabinet 11, the inverter 10 may be installed on the integrated platform first, and then the bus member 20 may be installed on the integrated platform; the bus bar 20 may be mounted on the integrated platform, and then the inverter 10 may be mounted on the integrated platform. In this way, the mounting order can be selected according to the actual situation, effectively improving the assembly flexibility of the inverter 10 and the assembly flexibility of the bus bar 20.

After the inverter 10 is mounted on the integrated platform, the bottom end surface 115 of the inverter 10 is in contact with or connected to the integrated platform.

In the inverter cabinet 11, the relative positions of the ac outlet 116 and the space 112 are selected according to the actual situation. For example, the ac outlet 116 is located at the top of the yield space 112, the ac outlet 116 is located at the bottom of the yield space 112, or the ac outlet 116 is located on a side of the yield space 112 that is remote from the ac output side 111.

To simplify the electrical connection of the ac output and the bussing member 20, as shown in fig. 2 and 3, the ac output 116 is located at the top of the relief space 112.

On the one hand, as shown in fig. 2, two cabinet boards forming the space 112 for giving way in the inverter cabinet 11 are respectively a first cabinet board 119 and a second cabinet board 1110, the first cabinet board 119 and the second cabinet board 1110 are vertically arranged, one end of the first cabinet board 119 is connected with the ac output side 111, the other end of the first cabinet board 119 is connected with the second cabinet board 1110, and the first cabinet board 119 is higher than the second cabinet board 1110. In this case, if the ac outlet 116 is located at the top of the relief space 112, the ac outlet 116 is located at the first cabinet 119; or ac outlet 116 is located on a side of relief space 112 remote from ac output side 111, ac outlet 116 being located on second panel 1110.

On the other hand, the inverter case 11 has three case plates forming the space 112, for example, a third case plate is provided in addition to the first case plate 119 and the second case plate 1110, one end of the third case plate is connected to the ac output side 111, the other end of the third case plate is connected to the second case plate 1110, and the third case plate is lower than the first case plate 119. In this case, ac output interface 116 is located at first cabinet panel 119, second cabinet panel 1110, or third cabinet panel.

In practical situations, the number of cabinet boards forming the yielding space 112 in the inverter cabinet 11 may be more than four, which is not limited in this embodiment.

In order to simplify the installation of the dc input of the inverter 10, as shown in fig. 2 and 3, the bottom end surface 115 of the inverter cabinet 11 is provided with a dc input port 117, and the dc input port 117 is located on a side of the relief space 112 away from the ac output side 111.

The plurality of inverters 10 are generally arranged side by side in the width direction thereof, and on the basis of this, in order to facilitate the installation of the bus bar 20, as shown in fig. 1 and 2, the above-described ac output side 111 is located on one side in the length direction of the inverter cabinet 11; the space 112 penetrates the inverter cabinet 11 in the width direction of the inverter cabinet 11.

In actual cases, if a plurality of inverters 10 are arranged side by side in the length direction thereof, the ac output side 111 may be selected to be located on one side in the width direction of the inverter cabinet 11; in the longitudinal direction of the inverter cabinet 11, the space 112 for relief penetrates the inverter cabinet 11.

As shown in fig. 3, the inverter cabinet 11 includes two cabinet doors 118, where two cabinet doors 118 are disposed on opposite sides of the inverter cabinet 11, and one cabinet door 118 is disposed on the ac output side 111, so as to facilitate maintenance, repair and operation of the inverter 10. It should be noted that, in fig. 3, the cabinet door 118 is in an opened state.

In this case, the cabinet door 118 may be located on the ac output side 111 or the cabinet door 118 may be located on the opposite side of the inverter cabinet 11 from the ac output side 111.

Based on the inverter cabinet 11 provided in the above embodiment, the embodiment of the present application further provides an inverter, and as shown in fig. 9 and 10, the inverter 10 includes: a cabinet and an ac output 12; the cabinet body is the inverter cabinet body 11 in the above embodiment. It will be appreciated that the ac output 12 is disposed at the ac output 116.

The inverter 10 further includes a dc input terminal 13, and the dc input terminal 13 is disposed at the dc input port 117. Of course, the inverter 10 also includes electronics, which are disposed within the inverter cabinet 11. The specific structure of the inverter 10 and the specific components included in the inverter 10 are not limited in this embodiment.

Since the inverter cabinet 11 provided in the above embodiment has the above technical effects, the inverter 10 includes the inverter cabinet 11, and the inverter 10 also has corresponding technical effects, which are not described herein.

Based on the inverter 10 provided in the foregoing embodiment, the embodiment of the present application further provides an inversion and boost integrated machine, as shown in fig. 6-15, including: a transformer 30, a bus bar 20, and at least two inverters 10; wherein the bus bar 20 electrically connects the ac output terminal 12 of each inverter 10 and the low voltage input terminal of the transformer 30, the inverter 10 is the inverter 10 described in the above embodiment.

Because the inverter 10 provided in the above embodiment has the above technical effects, the above inverter-boost integrated machine includes the above inverter 10, and the above inverter-boost integrated machine also has corresponding technical effects, which are not described herein again.

In the inverter and booster integrated machine, the transformer 30 has at least one low-voltage input member electrically connected to the busbar 20. It will be appreciated that each low voltage input member is electrically connected to at least two inverters 10 via a bus member 20, which may be a low voltage input copper bar or other conductive member, and this embodiment is not limited thereto.

For convenience of description, the low voltage input and the inverter 10 electrically connected through the bus bar 20 may be referred to as corresponding inverter 10 and low voltage input.

In some embodiments, as shown in fig. 9-11, any two inverters 10 are distributed in parallel with the low voltage input, from among the corresponding inverters 10 and low voltage input. The low-voltage input member is not shown in the drawings. The three circular black dots in fig. 9-11 represent at least one inverter 10.

The distribution direction of any two inverters 10 is parallel to the low-voltage input member, which means that the distribution direction of any two inverters 10 is parallel to the length direction of the low-voltage input member. "parallel" as referred to in this application is "substantially parallel" in actual operation, and "substantially parallel" is understood to mean parallel with some error.

For ease of installation, the bus bar 20 is parallel to the low pressure input.

In the above embodiment, the distribution position of the inverter 10 is selected according to the actual situation. In one aspect, as shown in fig. 9 and 10, all inverters 10 are located on the same side of transformer 30. In fig. 9, all inverters 10 are located on the left side of transformer 30; in fig. 10, all inverters 10 are located on the right side of transformer 30.

On the other hand, as shown in fig. 11, all the inverters 10 are distributed on opposite sides of the transformer 30. In fig. 11, a part of the inverter 10 is located on the left side of the transformer 30, and another part of the inverter 10 is located on the right side of the transformer 30.

In practice, it is also possible to select all the inverters 10 to be distributed on the upper and lower sides of the transformer 30, or all the inverters 10 to be distributed on the front and rear sides of the transformer 30; alternatively, all inverters 10 may be distributed on adjacent sides of transformer 30; it is also possible to choose all inverters 10 distributed on at least three sides of the transformer 30.

In other embodiments, as shown in fig. 12-15, any two inverters 10 are distributed in a direction perpendicular to the low voltage input, from among the corresponding inverters 10 and low voltage input. The low-voltage input member is not shown in the drawings. The three circular black dots in fig. 12-15 represent at least one inverter 10.

The distribution direction of any two inverters 10 is perpendicular to the low-voltage input member, which means that the distribution direction of any two inverters 10 is perpendicular to the length direction of the low-voltage input member. Reference to "vertical" in this application is to be understood as "substantially vertical" in actual operation, which is understood as vertical with some error.

The above structure shortens the length of the bus bar 20 in the length direction of the low-voltage input member, effectively reduces the amount of use of the bus bar 20, and particularly reduces the bus bar cost compared with the case mentioned in the previous embodiment (the corresponding inverter 10 and low-voltage input member, the distribution direction of any two inverters 10 being parallel to the low-voltage input member).

As shown in fig. 12 to 15, the above-mentioned bus bar 20 includes a first bus bar 20a and a second bus bar 20b for easy installation; wherein the input end of the first bus bar 20a is electrically connected with the inverter 10, the output end of the first bus bar 20a is electrically connected with the input end of the second bus bar 20b, and the output end of the second bus bar 20b is electrically connected with the low-voltage input part of the transformer 30; the longitudinal direction of the first bus bar 20a is parallel to the distribution direction of any two inverters 10, the second bus bar 20b is perpendicular to the first bus bar 20a, and the second bus bar 20b is parallel to the low-voltage input.

Of course, the above-described bus bar 20 may be alternatively constructed, and is not limited to the construction shown in fig. 12 to 15.

In the above embodiment, the distribution position of the inverter 10 is selected according to the actual situation. In one aspect, as shown in fig. 12 and 13, all of the inverters 10 are located on the same side of the transformer 30. In fig. 12, all inverters 10 are located on the left side of transformer 30; in fig. 13, all inverters 10 are located on the right side of transformer 30.

On the other hand, as shown in fig. 14, all the inverters 10 are distributed on opposite sides of the transformer 30. In fig. 14, a part of the inverter 10 is located on the left side of the transformer 30, and another part of the inverter 10 is located on the right side of the transformer 30.

In practice, it is also possible to select all the inverters 10 to be distributed on the upper and lower sides of the transformer 30, or all the inverters 10 to be distributed on the front and rear sides of the transformer 30, not limited to the distribution shown in fig. 14.

On the other hand, as shown in fig. 15, all the inverters 10 are distributed on adjacent sides of the transformer 30. In fig. 15, a part of the inverter 10 is located on the rear side of the transformer 30, and another part of the inverter 10 is located on the right side of the transformer 30.

In practical situations, all the inverters 10 may alternatively be distributed on other adjacent sides of the transformer 30, and are not limited to the distribution shown in fig. 15.

Alternatively, all of the inverters 10 may be distributed on at least three sides of the transformer 30.

In other embodiments, the corresponding inverters 10 and low-voltage input devices may be selected, and the distribution direction of at least two inverters 10 is perpendicular to the low-voltage input devices; and, in the corresponding inverter 10 and low voltage input member, the distribution direction of at least two inverters 10 is parallel to the low voltage input member. In this case, the low-pressure input member may be one or at least two.

In the inverter and booster integrated machine, the specific structure of the busbar 20 is selected according to the actual situation. In order to improve the protection performance, as shown in fig. 6, the bus bar 20 includes a bus bar 21 and a bus bar conductor provided in the bus bar 21, the bus bar conductor electrically connecting the ac output terminal 12 of the inverter 10 and the low voltage input terminal of the transformer 30. Thus, the busbar box 21 achieves protection of the busbar conductive member, and improves the protection performance.

The above-mentioned bus conductive member needs to dissipate heat, and in order to improve the heat dissipation effect, a heat dissipation structure or a heat dissipation device may be optionally directly disposed on the bus box 21.

Since the internal devices of the inverter 10 also need to dissipate heat, the heat dissipation structure or the heat dissipation device in the inverter 10 can be utilized to dissipate heat of the bus guide, so that the heat dissipation structure or the heat dissipation device can be saved. In some embodiments, the inverter cabinet 11 includes an air duct for cooling the internal components of the inverter cabinet 11, which communicates with the junction box 21. Thus, air for cooling the internal devices of the inverter cabinet 11 can enter the busbar box 21 to radiate the busbar conductive members, so that a radiator or a radiating structure is not required to be additionally arranged, the structure of the busbar member 20 is simplified, and the radiating cost is reduced.

It should be noted that, the junction box 21 has a vent communicating with the air duct, and correspondingly, the air duct has an opening communicating with the junction box 21, and the vent and the opening may be directly connected in a butt-joint manner, or may be communicated through other structures or components. To simplify the construction, the vent and the opening may be selected for abutting communication. In this case, the opening may be located in a cabinet plate forming the relief space 112 in the inverter cabinet 11, and the vent is located in a portion of the junction box 21 opposite to the opening.

In connection with the foregoing description, as shown in fig. 6, the opening in the duct communicating with the junction box 21 is located on the second cabinet panel 1110; alternatively, as shown in fig. 7, an opening in the duct that communicates with the junction box 21 is located on the first cabinet plate 119.

In fig. 6 and 7, the virtual straight arrow line and the real straight arrow line are both air flow directions.

The opening may be an air outlet of the air duct, an air inlet of the air duct, or an opening of the air duct (not the air outlet or the air inlet of the air duct).

In order to improve the heat dissipation effect, the inverter cabinet 11 may be provided in a divided manner. As shown in fig. 6 and 7, the inverter cabinet 11 includes a first cavity 113 and a second cavity 114, and the first cavity 113 is located at the top of the second cavity 114. It is understood that the top of the second cavity 114 refers to the top of the second cavity 114 in the height direction of the inverter cabinet 11, that is, the first cavity 113 and the second cavity 114 are distributed from top to bottom.

In the above-mentioned structure, the wind channel includes: a first air duct located within the first cavity 113, and a second air duct located within the second cavity 114; wherein the first air duct and the second air duct are relatively isolated, and the second air duct is communicated with the confluence box 21. If the second air duct is formed by the second chamber 114, the second chamber 114 communicates with the junction box 21. In fig. 6 and 7, the dashed straight arrow lines indicate the air flow direction in the second chamber 114, and the solid straight arrow lines indicate the air flow direction in the first chamber 113.

When one or more of the inverters 10 require maintenance or repair, the inverter 10 needs to be removed. In this case, the junction box 21 further includes a ventilation plate capable of opening and closing the ventilation opening in order to ensure heat dissipation inside the junction box 21.

In order to improve the heat dissipation effect, as shown in fig. 8, at least one partition 22 is disposed in the junction box 21, and the partition 22 divides the inner cavity of the junction box 21 into at least two sub-cavities, and the sub-cavities are communicated with the air channels of the inverter 10 corresponding to the sub-cavities. It will be appreciated that adjacent two subchambers are relatively isolated, i.e. adjacent two subchambers are not in communication. In this way, the air channels of the inverters 10 are in one-to-one correspondence with the sub-cavities of the confluence box 21, and the air channel of each inverter 10 can be independently communicated with the corresponding sub-cavity, so that independent heat dissipation of each sub-cavity is realized, and the heat dissipation effect is improved.

Note that three circular black dots in fig. 8 represent at least one inverter 10.

When one or more of the inverters 10 require maintenance or repair, the inverter 10 needs to be removed. In this case, the sub-cavities corresponding to the removed inverter 10 cannot realize heat dissipation. In order to avoid the above, the partition 22 is detachably provided to the junction box 21. After one or more inverters 10 are removed, the ventilation plate is used for closing the ventilation opening communicated with the air duct of the inverter 10, and the partition plate 22 on at least one side of the sub-cavity corresponding to the inverter 10 is removed, so that air flow of other sub-cavities can be introduced, and heat dissipation of the sub-cavity is realized.

The manner in which the partition plate 22 and the manifold box 21 are detachably connected is selected according to actual needs, for example, the partition plate 22 and the manifold box 21 are connected by a threaded connection or a clamping structure, which is not limited in this embodiment.

In the inverter and booster integrated machine, the transformer 30 also needs to dissipate heat. In order to improve the heat dissipation efficiency of the transformer 30, the air inlet or the air outlet of the air duct of the inverter 10 may be selected to face the transformer 30.

As shown in fig. 6 and 7, the inverter cabinet 11 includes a first cavity 113 and a second cavity 114, the first cavity 113 being located at the top of the second cavity 114; the wind channel includes: a first air channel in the first cavity 113, a second air channel in the second cavity 114; wherein, the first air channel and the second air channel are relatively isolated, and the air outlet of the first air channel faces the transformer 30. It is understood that the first air duct and the second air duct are not in communication. In this way, the wind discharged from the first wind path is blown toward the transformer 30, thereby accelerating heat dissipation of the transformer 30.

In practical situations, the air inlet of the first air duct may also be selected to face the transformer 30. The first air duct housing is a straight air duct as shown in fig. 6 and 7, and may be an air duct with other shapes, which is not limited in this embodiment.

It should be noted that the heat dissipation method of the transformer 30 and the heat dissipation method of the second air duct and the junction box 21 mentioned above may be combined.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (18)

1. An inverter cabinet, comprising: an ac output side and an ac output port; the alternating current output side is provided with a yielding space for placing a converging piece, the alternating current output port is used for installing an alternating current output end of an inverter, and the alternating current output port is positioned on a cabinet plate forming the yielding space in the inverter cabinet body.

2. The inverter cabinet of claim 1, wherein the relief space extends through both sides of the inverter cabinet adjacent to the ac output side.

3. The inverter cabinet according to claim 1 or 2, wherein the relief space extends to a bottom end face of the inverter cabinet, and the bottom end face is located on a side of the relief space away from the ac output side.

4. The inverter cabinet of claim 1, wherein the ac outlet is located at a top of the yield space, and a bottom end surface of the inverter cabinet is provided with a dc inlet, and the dc inlet is located at a side of the yield space away from the ac output side.

5. The inverter cabinet according to claim 1, wherein the ac output side is located on one side in a longitudinal direction of the inverter cabinet; and in the width direction of the inverter cabinet, the abdication space penetrates through the inverter cabinet.

6. The inverter cabinet of claim 1, comprising at least one cabinet door, one of the cabinet doors being located on the ac output side.

7. An inverter, comprising: the cabinet body and the alternating current output end; wherein the cabinet is an inverter cabinet as claimed in any one of claims 1 to 6.

8. The utility model provides an contravariant boost all-in-one which characterized in that includes: a transformer, a confluence member, and at least two inverters; wherein the bus bar electrically connects an ac output of each of the inverters, which is the inverter of claim 7, and a low voltage input of the transformer.

9. The inversion and boost all-in-one machine according to claim 8, wherein said transformer has a low voltage input member electrically connected to said bus member, said low voltage input member being at least one;

the distribution direction of any two inverters in the corresponding inverters and the low-voltage input piece is perpendicular to the low-voltage input piece; and/or, the distribution direction of any two inverters in the corresponding inverters and the low-voltage input piece is parallel to the low-voltage input piece.

10. The inversion boosting all-in-one machine according to claim 9, wherein all of the inverters are located on the same side of the transformer.

11. The inversion boosting all-in-one machine according to claim 9, wherein all of said inverters are distributed on at least two sides of said transformer.

12. The inversion boosting all-in-one machine according to claim 11, wherein all of said inverters are distributed on opposite sides of said transformer.

13. The inversion and boost all-in-one machine according to claim 8, wherein the bus member includes a bus box and a bus conductive member disposed in the bus box, the bus conductive member electrically connecting the ac output terminal and the low voltage input terminal.

14. The inversion and boost all-in-one machine according to claim 13, wherein the inverter cabinet includes an air duct for cooling the devices inside the inverter cabinet, the air duct being in communication with the junction box.

15. The inversion and boost all-in-one machine according to claim 14, wherein the junction box has a vent communicating with the air duct, and the junction box further has a vent plate capable of opening and closing the vent.

16. The inversion and boost integrated machine according to claim 14, wherein,

the inverter cabinet body comprises a first cavity and a second cavity, and the first cavity is positioned at the top of the second cavity;

the air duct comprises: a first air duct located in the first cavity and a second air duct located in the second cavity;

the first air duct and the second air duct are relatively isolated, and the second air duct is communicated with the confluence box.

17. The inversion and boost integrated machine according to claim 14, wherein at least one partition plate is arranged in the confluence box, the partition plate divides the inner cavity of the confluence box into at least two sub-cavities, and the sub-cavities are communicated with the air channels of the inverter corresponding to the sub-cavities.

18. The inversion and boost all-in-one machine according to claim 17, wherein the partition is detachably provided to the junction box.

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