A new direct current busbar cabinet

Abstract

The utility model relates to a novel direct current busbar cabinet, including main unit, first flow guide unit, second flow guide unit, support unit, frame unit, installation unit, dust separation unit, dustproof and ventilating unit and locking unit. Its advantage lies in, utilize first flow guide unit and make the top of main unit play waterproof flow guide effect, it can guide the top rainwater to the side of main unit, avoids the rainwater along the top of main unit and infiltrates inside. And first flow guide unit cooperates with main unit, passes through the installation support of main unit, first flow guide unit can stably cover the top of cabinet, maximizes the water retaining effect, reduces the erosion risk of rainwater to the internal component of cabinet, utilizes second flow guide unit and makes the inside of main unit play the effect of water accumulation dredging, can guide the inside water accumulation to the outside of main unit, avoids the water accumulation and stays in the inside of main unit and leads to the damp short circuit of component.

Description

Technical Field

[0001] This utility model relates to the technical field of DC combiner cabinets, and in particular to a novel DC combiner cabinet. Background Technology

[0002] DC combiner cabinets are core power distribution equipment in DC power supply systems such as photovoltaic and energy storage systems. Their main function is to centrally aggregate, distribute, and protect multiple DC power sources, providing a stable input for subsequent inverters or energy storage converters. They serve as a crucial "bridge" connecting distributed DC power generation units (such as photovoltaic module strings) to the main system equipment. Their core working principle involves aggregating multiple low-voltage DC inputs (such as outputs from dozens of photovoltaic module strings) through internal copper busbars, circuit breakers, and other components, unifying the output into one or more DC power sources that meet the needs of subsequent equipment. They also integrate overcurrent, overvoltage, short-circuit, and reverse connection protection functions, and can monitor the current, voltage, and other parameters of each input in real time to ensure safe system operation.

[0003] DC combiner cabinets are mostly installed outdoors or semi-outdoor in environments (such as photovoltaic power stations), making them susceptible to rain damage. Traditional combiner cabinets lack targeted water diversion and drainage designs: the top lacks an effective water-blocking structure, allowing rainwater to easily seep into the interior along the top of the cabinet; accumulated water cannot drain quickly, potentially causing moisture-induced short circuits in internal components, compromising circuit stability, and even leading to equipment malfunctions. This also affects the DC power collection and protection functions. Furthermore, the dust filters used in combiner cabinets are often fixedly connected to the cabinet, such as through welding or riveting. Replacement requires disassembling the cabinet, which is cumbersome, time-consuming, and can easily damage components. Due to the inconvenience of replacement, maintenance is often delayed or steps are omitted, leading to dust accumulation, affecting heat dissipation and component lifespan, and interfering with the combiner cabinet's functionality.

[0004] Currently, no effective solutions have been proposed for the problems of poor waterproofing of the combiner cabinet and inconvenience in replacing the dust filter in the relevant technologies. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a new type of DC combiner cabinet, thereby solving the problems of poor waterproofing and inconvenient replacement of dust filters in related technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A new type of DC combiner cabinet includes:

[0008] Main unit;

[0009] A first flow guiding unit is disposed at the top of the outside of the main body unit and connected to the main body unit. The radial dimension of the bottom end of the first flow guiding unit is larger than the radial dimension of the main body unit, and is used to guide liquid to prevent liquid from entering the main body unit.

[0010] The second flow guiding unit is disposed at the bottom of the interior of the main body unit and connected to the main body unit, and is used to guide the liquid in the main body unit;

[0011] A support unit is disposed at the bottom of the exterior of the main body unit and connected to the main body unit, and communicates with the second flow guiding unit, for supporting the main body unit and discharging liquid from the main body unit;

[0012] A frame unit is disposed on the side of the main body unit and is connected to the main body unit;

[0013] The mounting unit is removably disposed inside the frame unit and connected to the frame unit;

[0014] A dustproof unit, which is removably disposed on the mounting unit, is used for dust prevention;

[0015] A dustproof and breathable unit is removably disposed in the mounting unit and located downstream of the dustproof unit for dustproof and breathable purposes;

[0016] A locking unit is provided, which is detachably connected to the frame unit and the mounting unit, respectively, for fixing the mounting unit.

[0017] In some embodiments, the main body unit includes:

[0018] The main body component has a first flow guiding unit at its top outer end, a support unit at its bottom outer end, a second flow guiding unit at its bottom inner end, and a frame unit at its side. The radial dimension of the main body component is smaller than the radial dimension of the bottom end of the first flow guiding unit.

[0019] The first through-slot element is disposed at the bottom end inside the main body element and is connected to the second flow guiding unit and the support unit respectively, for allowing liquid to pass through;

[0020] A plurality of first ventilation elements are distributed on the side of the main body element and are respectively connected to the frame unit for ventilation.

[0021] In some embodiments, the first flow guiding unit includes:

[0022] A first flow guiding element is disposed at the top of the exterior of the main body unit and connected to the main body unit. The radial dimension of the bottom end of the first flow guiding element is greater than the radial dimension of the top end of the first flow guiding element and the radial dimension of the main body unit, and is used to guide liquid to prevent liquid from entering the main body unit.

[0023] In some embodiments, the second flow guiding unit includes:

[0024] The second flow guiding element is disposed at the bottom end inside the main body unit and connected to the main body unit for guiding liquid;

[0025] The second channel element passes through the second flow guide element and is connected to the main body unit for allowing liquid to pass through.

[0026] In some embodiments, the support unit includes:

[0027] A support element is disposed at the bottom of the exterior of the main body unit and connected to the main body unit for supporting the main body unit;

[0028] The third channel element is disposed at the top of the support element and is connected to the main body unit for allowing liquid to pass through.

[0029] In some embodiments, the frame unit includes:

[0030] A frame element is disposed on the side of the main body unit and is connected to the main body unit;

[0031] A plurality of second ventilation elements are respectively disposed on the side of the frame element for ventilation;

[0032] First mounting elements, a plurality of first mounting elements are disposed at the ends of the frame element and are detachably connected to the mounting unit;

[0033] A fourth through slot element is disposed at the bottom end of the frame element and is connected to the first mounting element and the mounting unit respectively, for the locking unit to pass through.

[0034] In some embodiments, the mounting unit includes:

[0035] A second mounting element is removably disposed inside the frame unit;

[0036] A third mounting element is disposed at the top of the second mounting element, and the dust-proof unit is disposed inside the third mounting element;

[0037] A fourth mounting element is disposed at the top of the second mounting element, and the dustproof and breathable unit is disposed inside the fourth mounting element;

[0038] A connecting element is disposed at the bottom end of the second mounting element, communicates with the frame unit, and is detachably connected to the locking unit.

[0039] In some embodiments, the dust-proof unit includes:

[0040] A fifth mounting element, which is removably disposed in the mounting unit and located upstream of the dustproof and breathable unit;

[0041] A mesh filter element is disposed inside the fifth mounting element and connected to the fifth mounting element for dust prevention.

[0042] In some embodiments, the dustproof and breathable unit includes:

[0043] A sixth mounting element, which is removably disposed in the mounting unit and located downstream of the dust-proof unit;

[0044] A membrane filter element is disposed inside the sixth mounting element and connected to the sixth mounting element for dust prevention and air permeability.

[0045] In some embodiments, the locking unit includes:

[0046] A locking element is provided, which is detachably connected to the frame unit and the mounting unit respectively, for fixing the mounting unit.

[0047] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0048] This utility model discloses a novel DC combiner cabinet. A first flow guiding unit provides a waterproofing effect on the top of the main unit, directing rainwater to the sides of the main unit and preventing it from seeping into the interior. Furthermore, the first flow guiding unit, in conjunction with the main unit and supported by its mounting structure, stably covers the top of the cabinet, maximizing its water-blocking effect and reducing the risk of rainwater corrosion to internal components. A second flow guiding unit effectively drains accumulated water from the interior of the main unit, directing it to the outside and preventing water buildup that could cause short circuits due to moisture. The frame unit, mounting unit, dustproof unit, dustproof and ventilated unit, and locking unit work together to provide mounting support and ventilation for the mounting unit. The mounting unit supports the dustproof and ventilated units and can be flexibly disassembled. The locking unit securely fixes the mounting unit within the frame unit. This design not only prevents the dustproof and ventilation units from becoming loose, but also allows for quick removal of the installation unit to replace dustproof components by unlocking, eliminating the need to disassemble the cabinet and solving the problem of inconvenient replacement of traditional dustproof nets. At the same time, the sealed combination of the dustproof and ventilation units with the ventilation path effectively prevents dust and moisture from entering the cabinet, ensuring the heat dissipation and operational stability of the internal components of the junction box. Attached Figure Description

[0049] Figure 1 This is a three-dimensional structural schematic diagram of a novel DC combiner cabinet according to an embodiment of the present utility model;

[0050] Figure 2 This is a schematic diagram of the internal structure of a novel DC combiner cabinet according to an embodiment of the present utility model;

[0051] Figure 3 This is an exploded view of the novel DC combiner cabinet according to an embodiment of the present utility model;

[0052] Figure 4 This is a three-dimensional structural diagram of the main unit according to an embodiment of the present utility model;

[0053] Figure 5 This is a three-dimensional structural schematic diagram of the first flow guiding unit according to an embodiment of the present utility model;

[0054] Figure 6 This is a three-dimensional structural schematic diagram of the second flow guiding unit according to an embodiment of the present utility model;

[0055] Figure 7 This is a three-dimensional structural schematic diagram of the support unit according to an embodiment of the present utility model;

[0056] Figure 8 This is a three-dimensional structural schematic diagram of the frame unit according to an embodiment of the present utility model;

[0057] Figure 9 This is a partial cross-sectional view of the mounting unit according to an embodiment of the present utility model;

[0058] Figure 10 This is a three-dimensional structural schematic diagram of the dust-proof unit according to an embodiment of the present utility model;

[0059] Figure 11 This is a three-dimensional structural schematic diagram of the dustproof and breathable unit according to an embodiment of the present utility model;

[0060] Figure 12 This is a three-dimensional structural diagram of the locking unit according to an embodiment of the present utility model.

[0061] The reference numerals in the accompanying drawings are as follows: 10, main body unit; 11, main body element; 12, first through-slot element; 13, first ventilation element;

[0062] 20. First flow guiding unit; 21. First flow guiding element;

[0063] 30. Second flow guiding unit; 31. Second flow guiding element; 32. Second through-slot element;

[0064] 40. Support unit; 41. Support element; 42. Third through slot element;

[0065] 50. Frame unit; 51. Frame element; 52. Second ventilation element; 53. First mounting element; 54. Fourth through-slot element;

[0066] 60. Mounting unit; 61. Second mounting element; 62. Third mounting element; 63. Fourth mounting element; 64. Connecting element;

[0067] 70. Dust separation unit; 71. Fifth mounting element; 72. Mesh filter element;

[0068] 80. Dustproof and breathable unit; 81. Sixth mounting element; 82. Membrane filter element;

[0069] 90. Locking unit; 91. Locking element. Detailed Implementation

[0070] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0071] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0072] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0073] like Figure 1 , Figure 2 , Figure 3 As shown, a novel DC combiner cabinet includes a main body unit 10, a first flow guiding unit 20, a second flow guiding unit 30, a support unit 40, a frame unit 50, a mounting unit 60, a dustproof unit 70, a dustproof and breathable unit 80, and a locking unit 90. The first flow guiding unit 20 is located at the top of the main body unit 10 and connected to it. The radial dimension of the bottom end of the first flow guiding unit 20 is larger than the radial dimension of the main body unit 10, used to guide liquid and prevent liquid from entering the main body unit 10. The second flow guiding unit 30 is located at the bottom of the main body unit 10 and connected to it, used to guide liquid within the main body unit 10. The support unit 40 is located at the bottom of the main body unit 10 and connected to it, and communicates with the second flow guiding unit 30, used to support the main body unit 10. The main unit 10 discharges liquid from the main unit 10; the frame unit 50 is disposed on the side of the main unit 10 and is connected to the main unit 10; the mounting unit 60 is removably disposed inside the frame unit 50 and is connected to the frame unit 50; the dustproof unit 70 is removably disposed on the mounting unit 60 for dust prevention; the dustproof and breathable unit 80 is removably disposed on the mounting unit 60 and located downstream of the dustproof unit 70 for dust prevention and breathability; the locking unit 90 is detachably connected to the frame unit 50 and the mounting unit 60 respectively for fixing the mounting unit 60.

[0074] like Figure 4 As shown, the main body unit 10 includes a main body element 11, a first channel element 12, and several first ventilation elements 13. Specifically, a first flow guiding unit 20 is provided at the top of the outer surface of the main body element 11, a support unit 40 is provided at the bottom of the outer surface of the main body element 11, a second flow guiding unit 30 is provided at the bottom of the inner surface of the main body element 11, and a frame unit 50 is provided on the side of the main body element 11. The radial dimension of the main body element 11 is smaller than the radial dimension of the bottom of the first flow guiding unit 20. The first channel element 12 is located at the bottom of the inner surface of the main body element 11 and is connected to the second flow guiding unit 30 and the support unit 40, respectively, for allowing liquid to pass through. Several first ventilation elements 13 are distributed on the side of the main body element 11 and are connected to the frame unit 50, respectively, for ventilation.

[0075] In some embodiments, the main component 11 includes a cabinet and a door panel. The top of the cabinet exterior is provided with a first airflow guiding unit 20, the bottom of the cabinet exterior is provided with a support unit 40, the bottom of the cabinet interior is provided with a first through-slot element 12 and a second airflow guiding unit 30, and the sides of the cabinet are provided with several first ventilation elements 13 and frame units 50. The door panel is movably disposed at the front end of the cabinet for opening and closing the cabinet.

[0076] The dimensions of the door panel should match the dimensions of the cabinet. Generally, the length of the door panel is equal to the outer length of the cabinet, the width of the door panel is less than the outer width of the cabinet, and the height of the door panel is equal to the outer height of the cabinet.

[0077] In some of these embodiments, the main component 11 is made of galvanized steel sheet.

[0078] The cross-section of the first through-slot element 12 is circular.

[0079] The dimensions of the first through-slot element 12 are matched with the dimensions of the main body element 11. Generally, the radial dimension of the first through-slot element 12 is smaller than the inner length and inner width of the cabinet, and the axial dimension (depth) of the first through-slot element 12 is equal to the inner wall thickness (bottom wall thickness) of the cabinet.

[0080] In some of these embodiments, the first through-slot element 12 is a first through-hole.

[0081] The first ventilation element 13 has a circular cross-section.

[0082] The dimensions of the first ventilation element 13 are matched with the dimensions of the main body element 11. Generally, the radial dimension of the first ventilation element 13 is smaller than the inner width and inner height of the cabinet door, and the axial dimension (depth) of the first ventilation element 13 is equal to the inner wall thickness (side wall thickness) of the cabinet.

[0083] In some embodiments, a plurality of first ventilation elements 13 are arranged in a rectangular array. Specifically, the plurality of first ventilation elements 13 are arranged along the width and height directions of the main body element 11 (cabinet).

[0084] In some of these embodiments, the first ventilation element 13 is a first ventilation hole.

[0085] like Figure 5 As shown, the first flow guiding unit 20 includes a first flow guiding element 21. The first flow guiding element 21 is disposed at the top of the exterior of the main body unit 10 and connected to the main body unit 10. The radial dimension of the bottom end of the first flow guiding element 21 is greater than the radial dimension of the top end of the first flow guiding element 21, and the radial dimension of the bottom end of the first flow guiding element 21 is greater than the radial dimension of the main body unit 10, for guiding liquid to prevent liquid from entering the main body unit 10.

[0086] Specifically, the first flow guiding element 21 is disposed at the top of the outside of the main body element 11 and is connected to the main body element 11.

[0087] More specifically, the first flow guiding element 21 is disposed at the top of the exterior of the cabinet and is connected to the cabinet.

[0088] In some embodiments, the cross-section of the first flow guiding element 21 is an isosceles trapezoid. Specifically, the length and width of the first flow guiding element 21 increase from its top end (away from the top of the cabinet) to its bottom end (closer to the top of the cabinet).

[0089] The dimensions of the first flow guiding element 21 are matched with the dimensions of the main body element 11. Generally, the maximum length of the first flow guiding element 21 is greater than the outer length of the cabinet, and the maximum width of the first flow guiding element 21 is greater than the outer width of the cabinet.

[0090] In some of these embodiments, the first flow guiding element 21 is fixedly connected to the main body element 11, including but not limited to integral stamping.

[0091] In some of these embodiments, the first flow guiding element 21 is made of galvanized steel sheet.

[0092] In some of these embodiments, the first flow guiding element 21 is a waterproof eaves.

[0093] like Figure 6 As shown, the second flow guiding unit 30 includes a second flow guiding element 31 and a second through-slot element 32. The second flow guiding element 31 is disposed at the bottom end inside the main body unit 10 and connected to the main body unit 10, and is used to guide liquid; the second through-slot element 32 is disposed through the second flow guiding element 31 and is connected to the main body unit 10, and is used to allow liquid to pass through.

[0094] Specifically, the second flow guiding element 31 is disposed at the bottom of the interior of the main body element 11 and is connected to the main body element 11; the second through groove element 32 is connected to the first through groove element 12.

[0095] More specifically, the second flow guiding element 31 is disposed at the bottom of the interior of the cabinet and is connected to the cabinet.

[0096] In some embodiments, the outer cross-section of the second flow guiding element 31 is rectangular, and the inner cross-section is an isosceles triangle. Specifically, the inner length and width of the second flow guiding element 31 decrease from its top (away from the bottom of the cabinet) to its bottom (closer to the bottom of the cabinet).

[0097] The dimensions of the second flow guiding element 31 are matched with the dimensions of the main body element 11. Generally, the outer length of the second flow guiding element 31 is equal to the inner length of the cabinet, the outer width of the second flow guiding element 31 is equal to the inner width of the cabinet, and the outer height of the second flow guiding element 31 is less than the inner height of the cabinet.

[0098] In some embodiments, the second flow guiding element 31 is fixedly connected to the main body element 11, including but not limited to bolt connection.

[0099] In some of these embodiments, the second flow guiding element 31 is made of galvanized steel sheet.

[0100] In some of these embodiments, the second flow guiding element 31 is a flow guide plate.

[0101] The cross-section of the second through-slot element 32 is circular.

[0102] The dimensions of the second through-slot element 32 are matched with the dimensions of the second flow guiding element 31. Generally, the radial dimension of the second through-slot element 32 is smaller than the maximum inner length and the maximum inner width of the second flow guiding element 31, and the axial dimension of the second through-slot element 32 is equal to the inner wall thickness (bottom wall thickness) of the second flow guiding element 31.

[0103] The dimensions of the second through-slot element 32 are matched with the dimensions of the first through-slot element 12. Generally, the radial dimension of the second through-slot element 32 is equal to the radial dimension of the first through-slot element 12.

[0104] In some of these embodiments, the second through slot element 32 is a second through hole.

[0105] like Figure 7 As shown, the support unit 40 includes a support element 41 and a third through-slot element 42. The support element 41 is disposed at the bottom of the main body unit 10 and connected to the main body unit 10 to support the main body unit 10; the third through-slot element 42 is disposed at the top of the support element 41 and connected to the main body unit 10 to allow liquid to pass through.

[0106] Specifically, the support element 41 is disposed at the bottom of the outside of the main body element 11 and is connected to the main body element 11; the third through slot element 42 is connected to the first through slot element 12.

[0107] More specifically, the support element 41 is located at the bottom of the exterior of the cabinet and is connected to the cabinet.

[0108] In some embodiments, the support element 41 includes a support plate and a through groove. The support plate is disposed at the bottom of the exterior of the cabinet, and a third through groove element 42 is disposed at the top of the support plate and connected to the cabinet. The through groove passes through the front end of the support plate and communicates with the third through groove element 42.

[0109] The dimensions of the support plate match the dimensions of the main component 11. Generally, the length of the support plate is equal to the outer length of the cabinet, the width of the support plate is equal to the outer width of the cabinet, and the height of the support plate is less than the outer height of the cabinet.

[0110] The dimensions of the through slot are matched with the dimensions of the support plate. Generally, the maximum length of the through slot is less than the length of the support plate, the width of the through slot is equal to the width of the support plate, and the maximum height of the through slot is less than the height of the support plate.

[0111] In some embodiments, the support element 41 is fixedly connected to the main body element 11, including but not limited to bolt connections.

[0112] In some of these embodiments, the support element 41 is made of galvanized steel sheet.

[0113] The cross-section of the third through-slot element 42 is circular.

[0114] The dimensions of the third through-slot element 42 are matched with the dimensions of the support element 41. Generally, the radial dimension of the third through-slot element 42 is smaller than the maximum length and width of the through-slot.

[0115] The dimensions of the third through-slot element 42 are matched with the dimensions of the first through-slot element 12. Generally, the radial dimension of the third through-slot element 42 is equal to the radial dimension of the first through-slot element 12.

[0116] In some of these embodiments, the third through slot element 42 is a third through hole.

[0117] like Figure 8 As shown, the frame unit 50 includes a frame element 51, a plurality of second ventilation elements 52, a first mounting element 53, and a fourth through slot element 54. The frame element 51 is disposed on the side of the main body unit 10 and communicates with it; the plurality of second ventilation elements 52 are respectively disposed on the side of the frame element 51 for ventilation; the plurality of first mounting elements 53 are disposed at the ends of the frame element 51 and are detachably connected to the mounting unit 60; the fourth through slot element 54 is disposed at the bottom end of the frame element 51 and communicates with the first mounting elements 53 and the mounting unit 60, respectively, for the locking unit 90 to pass through.

[0118] Specifically, the frame element 51 is disposed on the side of the main body element 11 and is connected to a plurality of first ventilation elements 13 and connected to the main body element 11.

[0119] More specifically, the frame element 51 is located on the side of the cabinet and connected to the cabinet.

[0120] The frame element 51 has a structure that is closed on one side and open on the other side.

[0121] The dimensions of the frame element 51 match the dimensions of the main body element 11. Generally, the outer length of the frame element 51 is less than the outer width of the cabinet, the outer width of the frame element 51 is less than the outer length of the cabinet, and the outer height of the frame element 51 is less than the outer height of the cabinet.

[0122] In some embodiments, the frame element 51 is fixedly connected to the main body element 11, including but not limited to bolted connections.

[0123] In some of these embodiments, the frame element 51 is made of metal.

[0124] In some embodiments, the frame element 51 is a frame. The side of the frame element 51 (the side away from the main body element 11) does not protrude beyond the side of the first flow guiding element 21. That is, the first flow guiding element 21 can cover the frame element 51 to prevent liquid from flowing into the frame element 51.

[0125] The cross-section of the second ventilation element 52 is circular.

[0126] The dimensions of the second ventilation element 52 are matched with the dimensions of the frame element 51. Generally, the radial dimension of the second ventilation element 52 is smaller than the inner length and inner height of the frame element 51, and the axial dimension of the second ventilation element 52 is equal to the inner wall thickness (side wall thickness) of the frame element 51.

[0127] In some embodiments, a plurality of second ventilation elements 52 are arranged in a rectangular array. Specifically, the plurality of second ventilation elements 52 are arranged along the length and height directions of the frame element 51.

[0128] In some of these embodiments, the second ventilation element 52 is a second ventilation hole.

[0129] The cross-section of the first mounting element 53 is rectangular.

[0130] The dimensions of the first mounting element 53 match the dimensions of the frame element 51. Generally, the length of the first mounting element 53 is greater than the inner length of the frame element 51, the length of the first mounting element 53 is less than the outer length of the frame element 51, the width of the first mounting element 53 is less than the inner width of the frame element 51, the height of the first mounting element 53 is greater than the inner height of the frame element 51, and the height of the first mounting element 53 is less than the outer height of the frame element 51.

[0131] In some of these embodiments, the first mounting element 53 is a first mounting slot.

[0132] The cross-section of the fourth through slot element 54 is circular.

[0133] The dimensions of the fourth through-slot element 54 are matched with the dimensions of the first mounting element 53. Generally, the radial dimension of the fourth through-slot element 54 is smaller than the length and width of the first mounting element 53.

[0134] In some of these embodiments, the fourth through slot element 54 is a fourth through hole.

[0135] like Figure 9 As shown, the mounting unit 60 includes a second mounting element 61, a third mounting element 62, a fourth mounting element 63, and a connecting element 64. The second mounting element 61 is removably disposed inside the frame unit 50; the third mounting element 62 is disposed at the top of the second mounting element 61, and a dustproof unit 70 is disposed inside the third mounting element 62; the fourth mounting element 63 is disposed at the top of the second mounting element 61, and a dustproof and breathable unit 80 is disposed inside the fourth mounting element 63; the connecting element 64 is disposed at the bottom of the second mounting element 61 and communicates with the frame unit 50, and is detachably connected to the locking unit 90.

[0136] Specifically, the second mounting element 61 is removably disposed inside the first mounting element 53; the connecting element 64 is connected to the fourth through slot element 54.

[0137] The second mounting element 61 has a hollow structure.

[0138] The dimensions of the second mounting element 61 match those of the first mounting element 53. Generally, the outer length of the second mounting element 61 is equal to the length of the first mounting element 53, the width of the second mounting element 61 is equal to the width of the first mounting element 53, and the outer height of the second mounting element 61 is equal to the height of the first mounting element 53.

[0139] In some of these embodiments, the second mounting element 61 is made of metal.

[0140] In some of these embodiments, the second mounting element 61 is a mounting plate.

[0141] The cross-section of the third mounting element 62 is rectangular.

[0142] The dimensions of the third mounting element 62 match those of the second mounting element 61. Generally, the length of the third mounting element 62 is greater than the inner length of the second mounting element 61, the length of the third mounting element 62 is less than the outer length of the second mounting element 61, the width of the third mounting element 62 is less than the width of the second mounting element 61, the height of the third mounting element 62 is greater than the inner height of the second mounting element 61, and the height of the third mounting element 62 is less than the outer height of the second mounting element 61.

[0143] In some of these embodiments, the third mounting element 62 is a second mounting slot.

[0144] The fourth mounting element 63 has a rectangular cross-section.

[0145] The dimensions of the fourth mounting element 63 match those of the second mounting element 61. Generally, the length of the fourth mounting element 63 is greater than the inner length of the second mounting element 61, the length of the fourth mounting element 63 is less than the outer length of the second mounting element 61, the width of the fourth mounting element 63 is less than the width of the second mounting element 61, the height of the fourth mounting element 63 is greater than the inner height of the second mounting element 61, and the height of the fourth mounting element 63 is less than the outer height of the second mounting element 61.

[0146] The dimensions of the fourth mounting element 63 match those of the third mounting element 62. Generally, the length of the fourth mounting element 63 is equal to the length of the third mounting element 62, the width of the fourth mounting element 63 is equal to the width of the third mounting element 62, and the height of the fourth mounting element 63 is equal to the height of the third mounting element 62.

[0147] In some of these embodiments, the fourth mounting element 63 is a third mounting slot.

[0148] The cross-section of the connecting element 64 is circular.

[0149] The dimensions of the connecting element 64 are matched with the dimensions of the second mounting element 61. Generally, the radial dimension of the connecting element 64 is smaller than the inner length and width of the second mounting element 61, and the axial dimension of the connecting element 64 is smaller than the inner wall thickness (bottom wall thickness) of the second mounting element 61.

[0150] The dimensions of the connecting element 64 match the dimensions of the fourth through slot element 54. Generally, the radial dimension of the connecting element 64 is equal to the radial dimension of the fourth through slot element 54.

[0151] In some of these embodiments, the connecting element 64 is a threaded hole.

[0152] like Figure 10 As shown, the dustproof unit 70 includes a fifth mounting element 71 and a mesh filter element 72. The fifth mounting element 71 is removably disposed in the mounting unit 60 and located upstream of the dustproof and breathable unit 80; the mesh filter element 72 is disposed inside the fifth mounting element 71 and connected to the fifth mounting element 71 for dustproofing.

[0153] Specifically, the fifth mounting element 71 is removably disposed inside the third mounting element 62.

[0154] The fifth mounting element 71 is a hollow structure.

[0155] The dimensions of the fifth mounting element 71 match those of the third mounting element 62. Generally, the outer length of the fifth mounting element 71 is equal to the length of the third mounting element 62, the width of the fifth mounting element 71 is equal to the width of the third mounting element 62, and the outer height of the fifth mounting element 71 is equal to the height of the third mounting element 62.

[0156] In some of these embodiments, the fifth mounting element 71 is made of metal.

[0157] In some of these embodiments, the fifth mounting element 71 is the first mounting frame.

[0158] The cross-section of the mesh filter element 72 is rectangular.

[0159] The dimensions of the mesh filter element 72 are matched with the dimensions of the fifth mounting element 71. Generally, the length of the mesh filter element 72 is not less than the inner length of the fifth mounting element 71, the width of the mesh filter element 72 is less than the width of the fifth mounting element 71, and the height of the mesh filter element 72 is not less than the inner height of the fifth mounting element 71.

[0160] In some embodiments, the mesh filter element 72 is fixedly connected to the fifth mounting element 71, including but not limited to adhesive bonding.

[0161] In some of these embodiments, the mesh filter element 72 is made of polyester fiber.

[0162] In some of these embodiments, the mesh filter element 72 is a dust filter.

[0163] like Figure 11 As shown, the dustproof and breathable unit 80 includes a sixth mounting element 81 and a membrane filter element 82. The sixth mounting element 81 is removably disposed in the mounting unit 60 and located downstream of the dustproof unit 70; the membrane filter element 82 is disposed inside the sixth mounting element 81 and connected to the sixth mounting element 81 for dustproof and breathable purposes.

[0164] Specifically, the sixth mounting element 81 is removably disposed inside the fourth mounting element 63.

[0165] The sixth mounting element 81 is a hollow structure.

[0166] The dimensions of the sixth mounting element 81 match those of the fourth mounting element 63. Generally, the outer length of the sixth mounting element 81 is equal to the length of the fourth mounting element 63, the width of the sixth mounting element 81 is equal to the width of the fourth mounting element 63, and the outer height of the sixth mounting element 81 is equal to the height of the fourth mounting element 63.

[0167] In some of these embodiments, the sixth mounting element 81 is made of metal.

[0168] In some of these embodiments, the sixth mounting element 81 is a second mounting frame.

[0169] The cross-section of the membrane filter element 82 is rectangular.

[0170] The dimensions of the membrane filter element 82 are matched with the dimensions of the sixth mounting element 81. Generally, the length of the membrane filter element 82 is not less than the inner length of the sixth mounting element 81, the width of the membrane filter element 82 is less than the width of the sixth mounting element 81, and the height of the membrane filter element 82 is not less than the inner height of the sixth mounting element 81.

[0171] In some embodiments, the membrane filter element 82 is fixedly connected to the sixth mounting element 81, including but not limited to adhesive bonding.

[0172] In some of these embodiments, the membrane filter element 82 is made of a polyester composite breathable membrane material.

[0173] In some embodiments, the membrane filter element 82 is a dustproof and breathable membrane. The membrane filter element 82 is used to filter fine dust, while the mesh filter element 72 is used to block large particulate impurities.

[0174] like Figure 12 As shown, the locking unit 90 includes a locking element 91. The locking element 91 is detachably connected to the frame unit 50 and the mounting unit 60, respectively, for fixing the mounting unit 60.

[0175] Specifically, the locking element 91 passes through the fourth through slot element 54 and is threadedly connected to the connecting element 64.

[0176] The locking element 91 has a circular cross-section.

[0177] The dimensions of the locking element 91 are matched with the dimensions of the fourth through slot element 54 (connecting element 64). Generally, the minimum radial dimension of the locking element 91 is equal to the radial dimension of the fourth through slot element 54 (connecting element 64), and the axial dimension of the locking element 91 is greater than the axial dimension of the fourth through slot element 54 (connecting element 64).

[0178] In some of these embodiments, the locking element 91 is made of metal.

[0179] In some of these embodiments, the locking element 91 is a locking bolt.

[0180] The method of using this utility model is as follows:

[0181] (I) Placement Operation

[0182] The main component 11 is placed at a designated position by the support component 41.

[0183] (II) Installation Operation

[0184] The mesh filter element 72 is placed inside the third mounting element 62 via the fifth mounting element 71;

[0185] Membrane filter element 82 is placed inside the fourth mounting element 63 via the sixth mounting element 81;

[0186] The second mounting element 61, which is equipped with the mesh filter element 72 and the membrane filter element 82, is placed in the first mounting element 53;

[0187] During the process, the connecting element 64 is aligned with the fourth through slot element 54;

[0188] The locking element 91 is passed through the fourth through slot element 54 and threaded to the connecting element 64 until tightened, thereby securing the second mounting element 61 in the frame element 51.

[0189] (III) Waterproofing process

[0190] The first flow guiding element 21 guides the liquid to the side of the main body element 11;

[0191] The second guiding element 31 guides the liquid to the second channel element 32, and discharges it through the second channel element 32, the first channel element 12, and the third channel element 42.

[0192] The mesh filter element 72 blocks impurities;

[0193] The membrane filter element 82 allows air to pass through while blocking moisture and dust.

[0194] (iv) Change of Operation

[0195] Twist the locking element 91 until it separates from the connecting element 64, remove the locking element 91 from the fourth through slot element 54, thereby releasing the second mounting element 61;

[0196] Remove the second mounting element 61 from the first mounting element 53;

[0197] The mesh filter element 72 and membrane filter element 82 that need to be replaced are taken out from the third mounting element 62 and the fourth mounting element 63 respectively through the fifth mounting element 71 and the sixth mounting element 81.

[0198] The new mesh filter element 72 and membrane filter element 82 are respectively installed into the interior of the third mounting element 62 and the fourth mounting element 63 via the fifth mounting element 71 and the sixth mounting element 81.

[0199] The second mounting element 61, which is equipped with the new mesh filter element 72 and membrane filter element 82, is placed in the first mounting element 53;

[0200] During the process, the connecting element 64 is aligned with the fourth through slot element 54;

[0201] The locking element 91 is passed through the fourth through slot element 54 and threaded to the connecting element 64 until tightened, thereby securing the second mounting element 61 in the frame element 51.

[0202] The advantages of this invention are as follows: The first diversion unit provides a waterproof diversion effect at the top of the main unit, directing rainwater to the sides of the main unit and preventing it from seeping into the interior. Furthermore, the first diversion unit, working in conjunction with the main unit and supported by its mounting structure, stably covers the top of the cabinet, maximizing its water-blocking effect and reducing the risk of rainwater erosion to internal components. The second diversion unit effectively drains accumulated water from the interior of the main unit, directing it to the outside and preventing water buildup that could cause short circuits in components. The frame unit, mounting unit, dustproof unit, dustproof and breathable unit, and locking unit work together to provide mounting support and ventilation for the mounting unit. The mounting unit supports the dustproof and breathable units and can be flexibly disassembled. The locking unit securely fixes the mounting unit within the frame unit. This design not only prevents the dustproof and ventilation units from becoming loose, but also allows for quick removal of the installation unit to replace dustproof components by unlocking, eliminating the need to disassemble the cabinet and solving the problem of inconvenient replacement of traditional dustproof nets. At the same time, the sealed combination of the dustproof and ventilation units with the ventilation path effectively prevents dust and moisture from entering the cabinet, ensuring the heat dissipation and operational stability of the internal components of the junction box.

[0203] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel DC combiner cabinet, characterized in that, include: Main unit; A first flow guiding unit is disposed at the top of the outside of the main body unit and connected to the main body unit. The radial dimension of the bottom end of the first flow guiding unit is larger than the radial dimension of the main body unit, and is used to guide liquid to prevent liquid from entering the main body unit. The second flow guiding unit is disposed at the bottom of the interior of the main body unit and connected to the main body unit, and is used to guide the liquid in the main body unit; A support unit is disposed at the bottom of the exterior of the main body unit and connected to the main body unit, and communicates with the second flow guiding unit, for supporting the main body unit and discharging liquid from the main body unit; A frame unit is disposed on the side of the main body unit and is connected to the main body unit; The mounting unit is removably disposed inside the frame unit and connected to the frame unit; A dustproof unit, which is removably disposed on the mounting unit, is used for dust prevention; A dustproof and breathable unit is removably disposed in the mounting unit and located downstream of the dustproof unit for dustproof and breathable purposes; A locking unit is provided, which is detachably connected to the frame unit and the mounting unit, respectively, for fixing the mounting unit.

2. The new DC busbar cabinet according to claim 1, characterized in that, The main body unit includes: The main body component has a first flow guiding unit at its top outer end, a support unit at its bottom outer end, a second flow guiding unit at its bottom inner end, and a frame unit at its side. The radial dimension of the main body component is smaller than the radial dimension of the bottom end of the first flow guiding unit. The first through-slot element is disposed at the bottom end inside the main body element and is connected to the second flow guiding unit and the support unit respectively, for allowing liquid to pass through; A plurality of first ventilation elements are distributed on the side of the main body element and are respectively connected to the frame unit for ventilation.

3. The new DC busbar cabinet according to claim 1, characterized in that, The first flow guiding unit includes: A first flow guiding element is disposed at the top of the exterior of the main body unit and connected to the main body unit. The radial dimension of the bottom end of the first flow guiding element is greater than the radial dimension of the top end of the first flow guiding element and the radial dimension of the main body unit, and is used to guide liquid to prevent liquid from entering the main body unit.

4. The new DC busbar cabinet according to claim 1, characterized in that, The second flow guiding unit includes: The second flow guiding element is disposed at the bottom end inside the main body unit and connected to the main body unit for guiding liquid; The second channel element passes through the second flow guide element and is connected to the main body unit for allowing liquid to pass through.

5. The new DC busbar cabinet according to claim 1, characterized in that, The support unit includes: A support element is disposed at the bottom of the exterior of the main body unit and connected to the main body unit for supporting the main body unit; The third channel element is disposed at the top of the support element and is connected to the main body unit for allowing liquid to pass through.

6. The new DC busbar cabinet according to claim 1, characterized in that, The frame unit includes: A frame element is disposed on the side of the main body unit and is connected to the main body unit; A plurality of second ventilation elements are respectively disposed on the side of the frame element for ventilation; First mounting elements, a plurality of first mounting elements are disposed at the ends of the frame element and are detachably connected to the mounting unit; A fourth through slot element is disposed at the bottom end of the frame element and is connected to the first mounting element and the mounting unit respectively, for the locking unit to pass through.

7. The new DC busbar cabinet according to claim 1, characterized in that, The installation unit includes: A second mounting element is removably disposed inside the frame unit; A third mounting element is disposed at the top of the second mounting element, and the dustproof unit is disposed inside the third mounting element; A fourth mounting element is disposed at the top of the second mounting element, and the dustproof and breathable unit is disposed inside the fourth mounting element; A connecting element is disposed at the bottom end of the second mounting element and communicates with the frame unit, and is detachably connected to the locking unit.

8. The new DC busbar cabinet according to claim 1, characterized in that, The dust-proof unit includes: A fifth mounting element, which is removably disposed in the mounting unit and located upstream of the dustproof and breathable unit; A mesh filter element is disposed inside the fifth mounting element and connected to the fifth mounting element for dust prevention.

9. The new DC busbar cabinet according to claim 1, characterized in that, The dustproof and breathable unit includes: A sixth mounting element, which is removably disposed in the mounting unit and located downstream of the dust-proof unit; A membrane filter element is disposed inside the sixth mounting element and connected to the sixth mounting element for dust prevention and air permeability.

10. The new DC busbar cabinet according to claim 1, characterized in that, The locking unit includes: A locking element is provided, which is detachably connected to the frame unit and the mounting unit respectively, for fixing the mounting unit.

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