Modular heat-dissipating low-voltage busbar cabinet

Abstract

The utility model belongs to the technical field of the confluence cabinet, especially relates to modularization heat dissipation type low pressure confluence cabinet, including cabinet body, input component, confluence subassembly and output component, the cabinet body is equipped with the baffle structure, the baffle structure is in the inner chamber interval of cabinet body and is supplied the first cavity that input component installs, is supplied the second cavity that confluence subassembly installs and is supplied the third cavity that output component installs, be equipped with first air cooling subassembly in the first cavity, be equipped with second air cooling subassembly in the second cavity, be equipped with third air cooling subassembly in the third cavity. The application utilizes the baffle structure to form three independent cavities, cooperate three air cooling subassembly to carry out single heat dissipation to three operation components, pass through the spatial layout of confluence box modularization to reduce the mutual influence between adjacent area heat, guarantee each operation component to get cold air heat dissipation, be favorable to improve the heat dissipation effect of confluence cabinet and improve the service life of each operation component.

Description

Technical Field

[0001] This utility model belongs to the technical field of combiner cabinets, and particularly relates to a modular heat dissipation type low-voltage combiner cabinet. Background Technology

[0002] A combiner cabinet is a current combining device suitable for photovoltaic power plants or energy storage systems. The current from multiple energy storage systems is combined in the combiner cabinet and then output to the back-end equipment.

[0003] In the existing technology, the combiner cabinet is arranged from top to bottom as an input area, a combiner area and an output area. Air cooling is achieved by a fan located at the top or bottom. However, this structure still has the following shortcomings: heat tends to accumulate in the area at the end, which in turn affects the heat dissipation effect of the area at the end. Utility Model Content

[0004] The purpose of this utility model is to provide a modular heat dissipation type low-voltage combiner cabinet, which aims to solve the technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides a modular heat-dissipating low-voltage combiner cabinet, comprising a cabinet body, an input component, a combiner component, and an output component. The cabinet body contains a partition structure that divides the interior of the cabinet body into a first cavity for mounting the input component, a second cavity for mounting the combiner component, and a third cavity for mounting the output component. The first cavity contains a first air-cooling component acting on the input component, the second cavity contains a second air-cooling component acting on the combiner component, and the third cavity contains a third air-cooling component acting on the output component. The input terminals of the combiner component are electrically connected to the input component, and the output terminals are electrically connected to the output component. The partition structure has notches for preventing airflow to the input and output terminals.

[0006] Optionally, the input component includes an incoming busbar, the busbar component includes a first busbar, a second busbar, and a plurality of circuit breakers, and the output component includes a disconnect switch and an outgoing busbar. One end of the incoming busbar is connected to an external energy storage device, and the other end is connected to the input terminal of the circuit breaker through the first busbar. One end of the outgoing busbar is connected to an external back-end device, and the other end is connected to the disconnect switch. The other end of the disconnect switch is connected to the output terminal of the circuit breaker through the second busbar.

[0007] Optionally, the partition structure includes a first cabinet panel and a second cabinet panel arranged vertically, the second cavity is located between the first cabinet panel and the second cabinet panel, a first crossbeam for mounting a plurality of circuit breakers is provided between the first cabinet panel and the second cabinet panel, and a second crossbeam for mounting the disconnect switch is provided between the second cabinet panel and the inner cabinet wall of the cabinet body.

[0008] Optionally, the notch includes a first clearance opening on the first cabinet panel and a second clearance opening on the second cabinet panel. The outer end of the first busbar passes through the first clearance opening and its end is located in the first cavity and connected to the incoming busbar. The outer end of the second busbar passes through the second clearance opening and its end is located in the third cavity and connected to the terminal of the disconnect switch.

[0009] Optionally, the partition structure further includes a horizontally arranged third cabinet panel, a fourth cabinet panel, and a vertically arranged fifth cabinet panel. The third cabinet panel, the first cabinet panel, and the inner wall of the cabinet body constitute the first cavity. The fourth cabinet panel, the first cabinet panel, the second cabinet panel, and the inner wall of the cabinet body constitute the second cavity. The fifth cabinet panel, the second cabinet panel, and the inner wall of the cabinet body constitute the third cavity. The third cabinet panel, the fourth cabinet panel, the fifth cabinet panel, and the inner wall of the cabinet body form the fourth cavity. The first air-cooling component, the second air-cooling component, and the third air-cooling component are all disposed in the fourth cavity.

[0010] Optionally, the first air-cooling component includes a first air guide shroud and a first fan. The third cabinet panel has a first mounting groove that matches the air outlet of the first air guide shroud. The air inlet of the first air guide shroud is located in the fourth cavity and its end is connected to a first air inlet pipe. The other end of the first air inlet pipe is connected to the first fan. The first fan is located on the outer side of the cabinet body.

[0011] Optionally, it also includes a first air inlet plate, which covers the air outlet of the first air guide hood and is connected to the third cabinet plate. The first air inlet plate has several equally spaced strip-shaped air inlet slots.

[0012] Optionally, it also includes a first temperature sensor, which is located inside the first cavity and is capable of monitoring the temperature inside the first cavity in real time.

[0013] Optionally, it also includes a plurality of equally spaced strip-shaped air outlet slots, wherein the plurality of strip-shaped air outlet slots are formed on the top wall of the first cavity and are arranged vertically opposite to the strip-shaped air inlet slots.

[0014] Optionally, it also includes a first dust cover, which is installed on the top wall of the cabinet body and covers several of the strip-shaped air outlet slots. The first dust cover has a first air outlet on each side, and a first dust baffle is installed on the outer side of the first air outlet. The bottom of the first dust baffle has a vertically oriented opening.

[0015] The modular heat-dissipating low-voltage combiner cabinet provided in this embodiment of the present invention has at least one of the following technical effects: The cabinet body's internal cavity is divided into three independent chambers—a first chamber, a second chamber, and a third chamber—using a partition structure. The output component is located in the first chamber and is individually cooled by a first air-cooling component; the combiner component is located in the second chamber and is individually cooled by a second air-cooling component; and the output component is located in the third chamber and is individually cooled by a third air-cooling component. Compared with the prior art, this application utilizes a partition structure to form three independent chambers and coordinates three sets of air-cooling components to individually cool the three operating components. Through the modular spatial layout of the combiner box, the mutual influence of heat between adjacent areas is reduced, ensuring that each operating component receives cool air cooling, which is beneficial for improving the heat dissipation effect of the combiner cabinet and extending the service life of each operating component. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the modular heat dissipation type low-voltage combiner cabinet provided in the embodiment of this utility model.

[0018] Figure 2 A schematic diagram of the structure of the concealed cabinet door of the modular heat dissipation low-voltage combiner cabinet provided in this embodiment of the utility model.

[0019] Figure 3 This is a longitudinal section diagram of the first cavity provided in an embodiment of the present invention.

[0020] The following are the labeling elements in the figure:

[0021] 1—Cabinet body; 11—First cavity; 111—Strip-shaped air outlet slot

[0022] 12—Second cavity 13—Third cavity 14—Fourth cavity

[0023] 2—Input Components 21—Incoming Busbar 3—Bus Unit

[0024] 31—First busbar; 32—Second busbar; 33—Circuit breaker

[0025] 331—Input Terminal; 332—Output Terminal; 4—Output Component

[0026] 41—Disconnect switch; 42—Outgoing busbar; 5—Baffle structure

[0027] 51—First cabinet panel; 52—Second cabinet panel; 53—Third cabinet panel

[0028] 54—Fourth cabinet panel; 55—Fifth cabinet panel; 6—First air-cooled assembly

[0029] 61—First air guide shroud; 62—First air inlet pipe; 63—First air inlet plate

[0030] 631—Strip-shaped air inlet slot; 7—Second air-cooling assembly; 8—Third air-cooling assembly

[0031] 9—First dust cover; 91—First air outlet; 92—First dust baffle. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0036] In one embodiment of this utility model, such as Figures 1-3 As shown, a modular heat-dissipating low-voltage combiner cabinet is provided, including a cabinet body 1, an input component 2, a combiner component 3, and an output component 4. The cabinet body 1 is provided with a partition structure 5, which can divide the inner cavity of the cabinet body 1 into a first cavity 11 for installing the input component 2, a second cavity 12 for installing the combiner component 3, and a third cavity 13 for installing the output component 4. The first cavity 11 is provided with a first air-cooling component 6 acting on the input component 2, the second cavity 12 is provided with a second air-cooling component 7 acting on the combiner component 3, and the third cavity 13 is provided with a third air-cooling component 8 acting on the output component 4. The input terminal 331 of the combiner component 3 is electrically connected to the input component 2, and the output terminal 332 is electrically connected to the output component 4. The partition structure 5 has a notch for avoiding airflow to the input terminal 331 and the output terminal 332. Specifically, the partition structure 5 divides the inner cavity of the cabinet body 1 into three independent first cavities 11, second cavities 12 and third cavities 13. The output component 4 is located in the first cavity 11 and is cooled independently by the first air-cooling component 6. The converging component 3 is located in the second cavity 12 and is cooled independently by the second air-cooling component 7. The output component 4 is located in the third cavity 13 and is cooled independently by the third air-cooling component 8. Furthermore, the partition structure 5 is made of ceramic heat insulation board to achieve heat insulation between adjacent areas.

[0037] In one embodiment of this utility model, such as Figure 2As shown, the input component 2 includes an incoming busbar 21, the busbar component 3 includes a first busbar 31, a second busbar 32, and several circuit breakers 33, and the output component 4 includes a disconnect switch 41 and an outgoing busbar 42. One end of the incoming busbar 21 is connected to an external energy storage device, and the other end is connected to the input terminal 331 of the circuit breaker 33 through the first busbar 31. One end of the outgoing busbar 42 is connected to an external back-end device, and the other end is connected to the disconnect switch 41. The other end of the disconnect switch 41 is connected to the output terminal 332 of the circuit breaker 33 through the second busbar 32. The partition structure 5 includes a vertically arranged first cabinet plate 51 and a second cabinet plate 52. The second cavity 12 is located between the first cabinet plate 51 and the second cabinet plate 52. A first crossbeam for mounting several circuit breakers 33 is provided between the first cabinet plate 51 and the second cabinet plate 52. A second crossbeam for mounting the disconnect switch 41 is provided between the second cabinet plate 52 and the inner wall of the cabinet body 1. The notch includes a first clearance opening on the first cabinet panel 51 and a second clearance opening on the second cabinet panel 52. The outer end of the first busbar 31 passes through the first clearance opening and its end is located in the first cavity 11 and connected to the incoming busbar 21. The outer end of the second busbar 32 passes through the second clearance opening and its end is located in the third cavity 13 and connected to the terminal of the disconnect switch 41.

[0038] In one embodiment of this utility model, such as Figure 2 As shown, the partition structure 5 also includes a horizontally arranged third cabinet panel 53, a fourth cabinet panel 54, and a vertically arranged fifth cabinet panel 55. The third cabinet panel 53, the first cabinet panel 51, and the inner wall of the cabinet body 1 constitute the first cavity 11. The fourth cabinet panel 54, the first cabinet panel 51, the second cabinet panel 52, and the inner wall of the cabinet body 1 constitute the second cavity 12. The fifth cabinet panel 55, the second cabinet panel 52, and the inner wall of the cabinet body 1 constitute the third cavity 13. The third cabinet panel 53, the fourth cabinet panel 54, the fifth cabinet panel 55, and the inner wall of the cabinet body 1 form the fourth cavity 14. The first air-cooling component 6, the second air-cooling component 7, and the third air-cooling component 8 are all disposed in the fourth cavity 14.

[0039] In one embodiment of this utility model, such as Figure 3As shown, the first air-cooling component 6 includes a first air guide shroud 61 and a first fan (not shown in the figure). The third cabinet plate 53 has a first mounting groove adapted to the air outlet end of the first air guide shroud 61. The air inlet end of the first air guide shroud 61 is located inside the fourth cavity 14, and its end is connected to a first air inlet pipe 62. The other end of the first air inlet pipe 62 is connected to the first fan. The first fan is located on the outer side of the cabinet body 1. Specifically, the structure and function of the second air-cooling component 7 are the same as those of the first air-cooling component 6. The difference is that the second air-cooling component 7 is located at the bottom of the second cavity 12 through the fourth cabinet plate 54. The structure and function of the third air-cooling component 8 are the same as those of the first air-cooling component 6. The difference is that the third air-cooling component 8 is located on the side wall of the third cavity 13 through the fifth cabinet plate 55. The first air guide shroud 61 and the second air guide shroud are both vertically oriented, while the third air guide shroud is horizontally oriented. Integrating three sets of air guide shrouds in the fourth cavity 14 helps to reduce the space occupied in the vertical direction in this embodiment.

[0040] In one embodiment of this utility model, such as Figure 3 As shown, it also includes a first air inlet plate 63, which covers the air outlet port of the first air guide shroud 61 and is connected to the third cabinet plate 53. The first air inlet plate 63 has several equally spaced strip-shaped air inlet slots 631. Specifically, the edge of the air outlet port of the first air guide shroud 61 has a flange extending outward and rests on the first mounting slot through the flange. The first air inlet plate 63 is connected to the third cabinet plate 53 by screws and covers the air outlet end of the first air guide shroud 61. The first air inlet plate 63 presses against the flange to achieve the effect of installing and fixing the first air guide shroud 61. The multiple strip-shaped air inlet slots 631 adjust the air inlet diameter of the air guide shroud, which helps to improve the air flow speed. On the other hand, it reduces the possibility of large particles of impurities in the cavity entering the air guide shroud or maintenance tools falling into the air guide shroud during routine equipment maintenance. The installation structure and function of the second air-cooling component 7 and the third air-cooling component 8 in this embodiment are the same as those of the first air-cooling component 6, so they will not be described again here.

[0041] In one embodiment of this utility model, a first temperature sensor (not shown in the figure) is further included. The first temperature sensor is located inside the first cavity 11 and can monitor the temperature inside the first cavity 11 in real time. Specifically, a second temperature sensor is also included in the second cavity 12, a third stabilizing sensor is included in the third cavity 13, and an information processor (not shown in the figure) is included in the fourth cavity 14. The first, second, and third temperature sensors are electrically connected to the information processor. The first, second, and third fans are electrically connected to the power supply through the information processor. The three temperature sensors monitor the temperature inside the three cavities in real time. When the temperature reaches a preset value that needs to be cooled, the information processor transmits a working signal to the fans to dissipate heat according to the heat level of different components.

[0042] In one embodiment of this utility model, such as Figure 3 As shown, it also includes several equally spaced strip-shaped air outlet slots 111. These slots 111 are located on the top wall of the first cavity 11 and are arranged vertically opposite to the strip-shaped air inlet slots 631. The hot air inside the cavity is dissipated using these slots 111. The tops of the second cavity 12 and the third cavity 13 are respectively provided with strip-shaped air outlet slots 111, the length of which needs to be adjusted according to the width of the cavity. The three sets of strip-shaped air outlet slots 111 directly dissipate the hot air in the corresponding cavities to the outside, preventing heat from accumulating in the cabinet body 1.

[0043] In one embodiment of this utility model, such as Figure 3 As shown, it also includes a first dust cover 9, which covers the top wall of the cabinet body 1 and seals several of the strip-shaped air outlet slots 111. The first dust cover 9 has first air outlets 91 on both sides, and a first dust baffle 92 is provided on the outer side of each first air outlet 91. The bottom of the first dust baffle 92 has a vertically oriented opening. Specifically, the bottom of the first dust cover 9 has an outwardly extending flange, which is connected to the top of the cabinet body 1 by screws. By using the dust cover and the side-designed first air outlets 91, the vertically oriented air outlets are adjusted to a horizontal orientation, and the dust baffle reduces the entry of external dust into the cavity.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular heat-dissipating low-voltage combiner cabinet, characterized in that: The device includes a cabinet body, an input component, a busbar component, and an output component. The cabinet body has a partition structure that divides the interior of the cabinet body into a first cavity for installing the input component, a second cavity for installing the busbar component, and a third cavity for installing the output component. The first cavity contains a first air-cooling component acting on the input component, the second cavity contains a second air-cooling component acting on the busbar component, and the third cavity contains a third air-cooling component acting on the output component. The input terminals of the busbar component are electrically connected to the input component, and the output terminals are electrically connected to the output component. The partition structure has notches to allow airflow to the input and output terminals.

2. The modular heat dissipation type low-voltage combiner cabinet according to claim 1, characterized in that: The input component includes an incoming busbar, the busbar component includes a first busbar, a second busbar, and several circuit breakers, and the output component includes a disconnect switch and an outgoing busbar. One end of the incoming busbar is connected to an external energy storage device, and the other end is connected to the input terminal of the circuit breaker through the first busbar. One end of the outgoing busbar is connected to an external back-end device, and the other end is connected to the disconnect switch. The other end of the disconnect switch is connected to the output terminal of the circuit breaker through the second busbar.

3. The modular heat dissipation type low-voltage combiner cabinet according to claim 2, characterized in that: The partition structure includes a first cabinet panel and a second cabinet panel arranged vertically. The second cavity is located between the first cabinet panel and the second cabinet panel. A first crossbeam for installing a plurality of circuit breakers is provided between the first cabinet panel and the second cabinet panel. A second crossbeam for installing the disconnect switch is provided between the second cabinet panel and the inner cabinet wall of the cabinet body.

4. The modular heat dissipation type low-voltage combiner cabinet according to claim 3, characterized in that: The gap includes a first clearance opening on the first cabinet plate and a second clearance opening on the second cabinet plate. The outer end of the first busbar passes through the first clearance opening and its end is located in the first cavity and connected to the incoming busbar. The outer end of the second busbar passes through the second clearance opening and its end is located in the third cavity and connected to the terminal of the disconnect switch.

5. The modular heat dissipation type low-voltage combiner cabinet according to claim 3, characterized in that: The partition structure also includes a horizontally arranged third cabinet panel, a fourth cabinet panel, and a vertically arranged fifth cabinet panel. The third cabinet panel, the first cabinet panel, and the inner wall of the cabinet body constitute the first cavity. The fourth cabinet panel, the first cabinet panel, the second cabinet panel, and the inner wall of the cabinet body constitute the second cavity. The fifth cabinet panel, the second cabinet panel, and the inner wall of the cabinet body constitute the third cavity. The third cabinet panel, the fourth cabinet panel, the fifth cabinet panel, and the inner wall of the cabinet body form the fourth cavity. The first air-cooling component, the second air-cooling component, and the third air-cooling component are all disposed in the fourth cavity.

6. The modular heat dissipation type low-voltage combiner cabinet according to claim 5, characterized in that: The first air-cooled component includes a first air guide shroud and a first fan. The third cabinet panel has a first assembly groove that matches the air outlet end of the first air guide shroud. The air inlet end of the first air guide shroud is located in the fourth cavity and its end is connected to a first air inlet pipe. The other end of the first air inlet pipe is connected to the first fan. The first fan is located on the outer side of the cabinet body.

7. The modular heat dissipation type low-voltage combiner cabinet according to claim 6, characterized in that: It also includes a first air inlet plate, which covers the air outlet of the first air guide hood and is connected to the third cabinet plate. The first air inlet plate has several equally spaced strip-shaped air inlet slots.

8. The modular heat dissipation type low-voltage combiner cabinet according to claim 6, characterized in that: It also includes a first temperature sensor, which is located inside the first cavity and can monitor the temperature inside the first cavity in real time.

9. The modular heat dissipation type low-voltage combiner cabinet according to claim 7, characterized in that: It also includes several equally spaced strip-shaped air outlet slots, which are formed on the top wall of the first cavity and arranged vertically opposite to the strip-shaped air inlet slots.

10. The modular heat-dissipating low-voltage combiner cabinet according to claim 9, characterized in that: It also includes a first dust cover, which is installed on the top wall of the cabinet body and covers several of the strip-shaped air outlet slots. The first dust cover has a first air outlet on each side. The outer side of the first air outlet is covered with a first dust baffle. The bottom of the first dust baffle has a vertically oriented opening.

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