Back frame type direct current remote supply outdoor far-end power supply device

Abstract

The utility model relates to the technical field of power equipment, in particular to a back frame type direct current remote supply outdoor far-end power supply device which comprises a cabinet body cavity, a back frame, a cabinet door, an inverter box, a mounting partition plate A, a mounting partition plate B, a DCAC heat dissipation aluminum plate and a DCDC heat dissipation aluminum plate. The cabinet body cavity is formed by welding a cabinet body back plate, side plates and bottom reinforcing ribs, and the back frame and the cabinet body back plate are integrally welded; the inversion box comprises a top cover, an inversion box cavity, a DCAC heat dissipation aluminum plate and a DCDC heat dissipation aluminum plate, and is fixed in the cabinet cavity through a mounting partition plate B; according to the scheme, through systematic optimization of the structure, heat dissipation, protection, modularization and cable management, the long-term operation stability of the outdoor remote power supply device in an extreme environment is improved, the comprehensive operation and maintenance cost is reduced, and the service life of the outdoor remote power supply device is prolonged. And a high-reliability and low-cost direct-current power supply solution is provided for scenes such as communication base stations and outdoor monitoring.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a rack-mounted DC remote power supply outdoor remote power device. Background Technology

[0002] With the rapid development of communication technology, the demand for stable DC power supplies for outdoor remote equipment (such as communication base stations, monitoring equipment, and highway and tunnel coverage base stations) is becoming increasingly urgent. Existing outdoor power supply devices mostly use AC power or battery power, which suffers from limited transmission distance, large fluctuations in power quality, and high maintenance costs. Although DC remote power supply technology is gradually becoming the mainstream solution due to its advantages such as low loss and long-distance transmission, existing devices still have significant shortcomings in terms of structural design, modularity, and environmental adaptability.

[0003] Traditional installations typically employ wall-mounted or freestanding layouts, resulting in dispersed internal components that require complete disassembly for installation and maintenance, leading to low construction efficiency. The cabinet's simple sealing structure lacks insulation layers and multiple sealing designs, allowing rain, snow, and dust to easily penetrate and affect the long-term stability of electronic components. Furthermore, the complex connection methods between critical components such as power modules and heat dissipation units and the cabinet hinder rapid replacement, increasing repair time and making it difficult to meet the maintenance needs of complex outdoor environments. These problems result in insufficient reliability and high maintenance costs for existing installations in harsh environments, severely restricting the widespread application of outdoor remote power supply technology. Summary of the Invention

[0004] Based on the above problems, this utility model proposes a rack-mounted DC remote power supply outdoor remote power device. Through integrated structural design, directional heat dissipation optimization, modular layout, multiple sealing protection and refined cable management, it comprehensively improves the reliability, heat dissipation performance and maintainability of the outdoor remote power supply device in complex environments, and effectively overcomes the problems of loose structure, insufficient heat dissipation, weak protection and high maintenance cost in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A rack-mounted DC remote power supply outdoor remote power device includes a cabinet cavity, a rack, a cabinet door, an inverter box, mounting partition A, mounting partition B, a DCAC heat dissipation aluminum plate, and a DCCDC heat dissipation aluminum plate.

[0007] The cabinet cavity is composed of a cabinet back panel, side panels, and bottom reinforcing ribs welded together, and the back frame is welded integrally with the cabinet back panel.

[0008] The inverter box includes a top cover, an inverter box cavity, a DCAC heat dissipation aluminum plate and a DCDC heat dissipation aluminum plate, and is fixed to the cabinet cavity by installing partition B;

[0009] The cabinet door is connected to the cabinet cavity by hinges, and the inner side is equipped with a cabinet door insulation partition and a sealing strip;

[0010] The DCAC heat dissipation aluminum plate and the DCDC heat dissipation aluminum plate are respectively connected to the inverter box cavity through through holes formed by bending.

[0011] Furthermore, the cabinet back panel is integrally welded to the back frame through multiple bends, and heat dissipation vents and waist holes are opened at the bends. The heat dissipation vents are set to correspond to the heat dissipation louvers on the side panel of the cabinet cavity, and the waist holes are matched with the installation positions of the bottom reinforcing ribs and are fixed by riveting and pressing studs.

[0012] Furthermore, the inverter box cavity is composed of a left side plate, a right side plate, and a bottom frame welded together. The short side of the bottom frame is bent multiple times to form an installation structure. Both the left side plate and the right side plate have countersunk holes and through holes. The countersunk holes are used to fix the mounting bracket of the fan, and the through holes are used to cooperate with the fixing bolts of the rail power supply and are locked by the rivet nuts.

[0013] Furthermore, the four sides of the DCAC heat dissipation aluminum plate and the DCDC heat dissipation aluminum plate are all bent at 90°. The DCAC heat dissipation aluminum plate is connected to the press-fit studs of the top cover through the through holes on its bent sides, and the DCDC heat dissipation aluminum plate is connected to the press-fit studs of the bottom frame through the through holes on its bent sides. Both are respectively attached and fixed to the DCAC plate and the DCDC plate.

[0014] Furthermore, the mounting partition B is formed by bending a rectangular sheet metal part, with through holes on both sides of the bent edge and fixed to the bottom of the cabinet cavity by press-fit nuts. The middle area of ​​the mounting partition B is stamped with a cable tie for fixing cables, and its top is connected to the bottom frame of the inverter box cavity by bolts.

[0015] Furthermore, the cabinet door insulation partition is formed by bending the four sides of a rectangular sheet metal part at right angles. Its four corners are fixed to the inner wall of the cabinet door by press-fit studs. Insulation cotton is sandwiched between the cabinet door insulation partition and the cabinet door. The insulation cotton covers the inner surface of the cabinet door and is sealed to the edge of the cabinet cavity by sealing strips.

[0016] Furthermore, the front of the bottom frame has inlet and outlet holes for installing cable guards. The cable guards are fixed to the holes in the bottom frame by a snap-fit ​​structure. The rear wall of the bottom frame is provided with press-fit studs, which are matched with the mounting holes of the rail, DTU and rail power supply, and fixed by bolts.

[0017] Furthermore, the bottom reinforcing rib is a bent piece, with its two bent edges welded and fixed to the side plate at the bottom of the cabinet cavity. Insulation cotton is sandwiched between the upper surface of the bottom reinforcing rib and the mounting partition A. The mounting partition A is fixed to the reserved screw hole of the bottom reinforcing rib by bolts, and its surface has through holes for fixing the mounting bracket of the high voltage DC circuit breaker lightning protection.

[0018] Beneficial effects of the utility model:

[0019] (1) The present invention proposes a rack-mounted DC remote power supply device for outdoor use. Through the integrated welding design of the rack and cabinet back panel, combined with the modular fixing of the inverter box to the mounting plate, installation requires no complex positioning, and maintenance allows for direct disassembly of individual modules, shortening construction time and significantly reducing labor costs.

[0020] (2) The present invention proposes a rack-type DC remote power supply device for outdoor use. The directional heat dissipation holes on the back panel of the cabinet and the louvers on the side panel form a forced air cooling channel. Combined with the 90° bending and fitting design of the DCAC / DCDC heat dissipation aluminum plate, the heat dissipation efficiency is improved compared with the traditional natural air cooling. The operating temperature of the equipment is reduced by 15~20℃, which significantly extends the life of electronic components.

[0021] (3) The present invention proposes a frame-type DC remote power supply device for outdoor use. The insulation partition and insulation cotton on the inner side of the cabinet door form a double-layer heat insulation barrier. Combined with the sealing strip and the cabinet cavity with multiple bends and welds, the protection level reaches IP65, which can effectively block rain, snow, dust and insects from entering and adapt to extreme environments from -40℃ to 70℃.

[0022] (4) The present invention proposes a rack-type DC remote power supply outdoor remote power device, with countersunk hole and through hole design in the inverter box cavity, bending installation structure of the bottom frame, and pressing stud fixing method for modules such as track and DTU, which realizes the rapid replacement of key components, improves fault repair efficiency, and reduces operation and maintenance costs.

[0023] (5) The present invention proposes a rack-type DC remote power supply outdoor remote power device. The cable tie bridge design of the mounting partition B combined with the protective coil improves the neatness of the cable arrangement, reduces the space occupied by the heat dissipation air duct, avoids the risk of short circuit caused by cable entanglement, and shortens the maintenance and troubleshooting time.

[0024] This invention improves the long-term operational stability of outdoor remote power supply devices in extreme environments and reduces overall operation and maintenance costs through systematic optimization of structure, heat dissipation, protection, modularization, and cable management. It provides a highly reliable and low-cost DC power supply solution for scenarios such as communication base stations and outdoor monitoring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0026] Figure 1 This is a schematic diagram of the overall structure of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the inverter box structure of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the internal structure of the inverter box of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0029] Figure 4 This is an exploded view of the inverter box cavity of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0030] Figure 5 This is an exploded view of the internal layout of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0031] Figure 6 This is a partial exploded view of the cabinet of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0032] Figure 7 This is an exploded view of the cabinet door of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0033] Figure 8 This is an internal oblique view of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0034] Figure 9 This is an exploded view of the installation of a rack-mounted DC remote power supply outdoor remote power device proposed in this utility model.

[0035] In the diagram, 1-Inverter box, 2-Top mounting ear of inverter box, 3-LED light, 4-Fan grille, 5-Bottom mounting ear, 6-Round hole coil protector, 7-DCAC board, 8-Top cover hinge, 9-Rail power supply, 10-Rail DTU, 11-Fan, 12-DCAC heat sink, 13-Top cover of inverter box, 14-DC-CDC heat sink, 15-DC-CDC board, 16-Inverter box cavity, 17-Left side panel of inverter box cavity, 18-Right side panel of inverter box cavity, 19-Bottom frame of inverter box cavity, 20-Top mounting plate, 21-Mounting partition A, 22-Heat outlet 23-Air vent, 24-Air inlet louver, 25-Door lock, 26-Cabinet door, 27-Cabinet door insulation partition, 28-High voltage DC circuit breaker lightning protection, 29-Railway, 30-Mounting partition B, 31-Back frame, 32-Cabinet cavity back panel, 33-Top mounting plate support, 34-Cabinet cavity side panel, 35-Insect and dustproof mesh cover, 36-Bottom reinforcing rib, 37-Insulation cotton A, 38-Insulation cotton B, 39-Cabinet door insulation cotton, 40-Cabinet door hinge, 41-Cabinet door sealing strip, 42-AC circuit breaker lightning protection, 43-Mounting rod, 44-Mounting back panel. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0037] Example 1

[0038] This embodiment presents the overall structural relationship of a rack-mounted DC remote power supply outdoor remote power device.

[0039] refer to Figure 1-9, the cabinet cavity of the back-frame type DC remote power supply outdoor remote power device is formed by welding and combining the cabinet cavity back panel 32, the inverter box top mounting plate bracket 20, the back frame 31, the cabinet cavity side panel 34 and the bottom reinforcing rib 36. Among them, the cabinet cavity back panel 32 is formed by multiple bending and cutting of sheet metal parts. The specific steps are as follows: the sheet metal part is first bent at 93° for the first time, then bent at 195° for the second time, and then bent multiple times to form a structure similar to the Chinese character "ji". After the third bending, a heat dissipation air outlet hole 22 is opened to optimize heat dissipation air outlet. The bottom of the back panel is formed by four bends. The first two bends are in an "L" shape, and the last two bends form a structure similar to the Chinese character "wo" from one side. Finally, the redundant top corners are cut to complete the forming; the cabinet cavity side panel 34 is formed by cutting the corners of a rectangular sheet metal part and bending the adjacent sides multiple times. The inverter box top mounting plate bracket 20 is a "ㄇ" shaped bending part with through holes and riveted rivet nuts. The bottom reinforcing rib 36 is a "ji" shaped bending part; the back frame 31 is formed by opening a waist hole in a rectangular sheet metal part and bending the three sides once and the long side twice. The cabinet door 26 is formed by a rectangular sheet metal part through two bends to form an "L" shape. The first right-angle bend is made on all four sides, and the second bend is inward, with holes opened at the connection positions and riveted rivet studs. The corners are cut and trimmed; the cabinet door heat preservation partition 27 is formed by right-angle bending of the four sides of a rectangular sheet metal part and opening round holes. The mounting partition A21 and the mounting partition B30 are both formed by right-angle bending of the four sides of a rectangular sheet metal part. Among them, the mounting partition B30 has through holes opened at the connection positions, riveted rivet nuts and a stamping wire bridge is formed. The inverter box top mounting plate 20 is formed by right-angle bending of two opposite sides of a rectangular sheet metal part and then cutting a square through hole in the middle, with round through holes opened at the connection positions and riveted rivet nuts.

[0040] The inverter box 01 includes an inverter box top cover 13, an inverter box cavity 16, a DC-AC heat dissipation aluminum plate 12 and a DC-DC heat dissipation aluminum plate 14. The inverter box top cover 13 is formed by cutting a rectangular sheet metal part, riveting rivet studs and opening countersunk through holes; the inverter box cavity 16 is formed by welding the left side plate 17, the right side plate 18 and the bottom frame 19 of the inverter box cavity. The side plates have counterbored holes. The bottom frame 19 of the inverter box cavity is formed by cutting a rectangular sheet metal part and then vertically bending the two long sides at 90° to form vertical walls, and the short side part is bent to form a mounting structure, with fine bending in some areas; both the DC-AC heat dissipation aluminum plate 12 and the DC-DC heat dissipation aluminum plate 14 are made of aluminum sheet metal parts bent at 90° on the four sides. The DC-AC heat dissipation aluminum plate 12 has round through holes opened at the connection positions and riveted rivet studs. The long side of the DC-DC heat dissipation aluminum plate 14 is bent and flanged to open round through holes and is connected through the through holes and rivet studs. Each component is assembled by welding, riveting and bolt fixing methods to form an outdoor power device with efficient heat dissipation, modular layout and multiple protections.

[0041] Embodiment 2

[0042] Based on Embodiment 1, this embodiment proposes the structural relationships of various components of a back-frame type DC remote power supply outdoor remote power device.

[0043] Reference Figures 1-9 As a whole, the remote power supply device has a rectangular structure with cabinet dimensions of 454 mm × 445 mm × 269 mm. The cabinet cavity is composed of a cabinet cavity back panel 32 made of 1.5-mm thick galvanized steel plate, cabinet cavity side plates 34, bottom reinforcing ribs 36 and a 2-mm thick steel plate back frame 31 which are welded together.

[0044] The cabinet cavity back panel 32 is formed by multiple bends of sheet metal parts: after the first 93° bend, a second 195° bend forms a main body similar to the shape of "ji", and the third bend opens a heat dissipation air outlet hole 22. The bottom forms an "L" - shaped and "﹃" - shaped composite structure after four bends; the cabinet cavity side plates 34 are formed by cutting the corners of a rectangular galvanized steel plate and then bending, with heat dissipation air outlet louvers 23 and air inlet louvers 24 stamped on the surface, and an insect - proof and dust - proof mesh cover 35 welded to the edge of the side plate. The back frame 31 is formed by bending three sides of a rectangular steel plate with waist holes, and is integrally welded to the cabinet cavity back panel 32. The top is fixed to the inverter box top mounting plate bracket 20 by bolts.

[0045] The cabinet door 26 is formed by two bends of 1.5 - mm thick galvanized sheet metal parts into an inner "L" - shaped structure. The inner side is fixed with a cabinet door heat preservation partition board 27 through M6 press - riveted stud. This partition board is a 1.2 - mm thick galvanized steel plate with right - angled bends on four sides, with round holes opened and a cabinet door heat preservation cotton 39 sandwiched between it and the cabinet door 26. Sealing rubber strips 41 are pasted on the four sides of the cabinet door, and it is connected to the cabinet cavity through cabinet door hinges 40. The door lock 25 is installed at the waist hole of the cabinet door 26, and配合 with the sealing structure to achieve an IP65 protection level. (It seems there is a wrong word "配合" here, it might be "cooperates")

[0046] The inverter box 1 is a square box with dimensions of 375 mm × 134 mm × 280 mm, including an inverter box top cover 13, an inverter box cavity 16, a DC - AC heat dissipation aluminum plate 12 and a DC - DC heat dissipation aluminum plate 14. The inverter box top cover 13 is cut from 1.5 - mm galvanized steel plate, with countersunk through - holes opened and connected to the inverter box cavity 16 through top cover hinges 8; the inverter box cavity 16 is composed of two 1.5 - mm galvanized side plates 17 and 18 and a bottom frame 19 which are welded together. The front of the bottom frame 19 has 4 M20 inlet and outlet holes and installs round - hole protection coils 6, with M78 through - holes opened in the front and back to fix fans 11, and M4 press - riveted studs are provided on the rear wall for installing rails 29, rail DTU10 and rail power supply 9. Both the DC - AC heat dissipation aluminum plate 12 and the DC - DC heat dissipation aluminum plate 14 are 1.2 - mm aluminum plates bent 90° at four sides, and are respectively connected to the inverter box top cover 13 and the bottom frame 19 through through - holes and press - riveted studs. The DC - AC plate 7 and the DC - DC plate 15 are fixed to the heat dissipation aluminum plates by fitting.

[0047] Mounting partitions A21 and B30 are formed by bending 1.5mm galvanized sheet. Partition B30 has M6.5 holes and punched wire tie bridges, and is fixed to the bottom of the cabinet with press-fit nuts. Insulation cotton A37 is sandwiched between partition B30 and the cabinet cavity back panel 32. The inverter box top mounting plate 20 is made of 1.2mm sheet metal, bent and cut, with square through holes and fixed to the top mounting plate support 33 with screws for mounting inverter box 1. Inverter box 1 is fixed to mounting partition B30 press-fit nuts and top mounting plate support 33 with M6 screws. Circuit breaker rail 29 is fixed to partition B30 with M4 screws. High voltage DC circuit breaker surge protector 28 and AC circuit breaker surge protector 42 are snapped onto rail 29.

[0048] The electrical connections are as follows: the output terminal of the high-voltage DC circuit breaker surge protector 28 is connected to the DC input of DC-DC board 15; the output terminal of DC-DC board 15 is connected to the DC input of DCAC board 7; the AC circuit breaker surge protector 42 is connected to the AC output of DCAC board 7; the input terminal of the track switch power supply 9 is connected to the AC output of the AC-DC board; the DC output terminal is connected to the track DTU 10; the output terminal of DTU 10 is connected to the communication port of DC-DC board 15; LED light 3 is connected to the fault display terminal of DCAC board 7; and the dual fans 11 are connected to the fan interface of DC-DC board 15. All modules are centrally wired through standardized interfaces and cable ties to ensure unobstructed airflow and convenient maintenance.

[0049] This embodiment achieves efficient heat dissipation, resistance to environmental corrosion, and rapid maintenance of outdoor power supply devices through precision bending and welding processes, modular layout, and multiple sealing designs, making it suitable for harsh scenarios such as communication base stations and tunnel monitoring.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A back-pack type DC remote outdoor remote power supply unit, characterized by, Includes cabinet cavity, back frame, cabinet door, inverter box, mounting partition A, mounting partition B, DCAC heat dissipation aluminum plate and DCCDC heat dissipation aluminum plate; The cabinet cavity is composed of a cabinet back panel, side panels, and bottom reinforcing ribs welded together, and the back frame is welded integrally with the cabinet back panel. The inverter box includes a top cover, an inverter box cavity, a DCAC heat dissipation aluminum plate and a DCDC heat dissipation aluminum plate, and is fixed to the cabinet cavity by installing partition B; The cabinet door is connected to the cabinet cavity by hinges, and the inner side is equipped with a cabinet door insulation partition and a sealing strip; The DCAC heat dissipation aluminum plate and the DCDC heat dissipation aluminum plate are respectively connected to the inverter box cavity through through holes formed by bending.

2. The rack-mounted DC remote power supply outdoor remote power device according to claim 1, characterized in that, The cabinet back panel is integrally welded to the back frame through multiple bends. The bends have ventilation holes and waist holes. The ventilation holes are set to correspond to the ventilation louvers on the side panel of the cabinet cavity. The waist holes are matched with the installation positions of the bottom reinforcing ribs and are fixed by riveting studs.

3. A back-pack type DC remote outdoor power supply apparatus according to claim 1, wherein The inverter box cavity is composed of a left side plate, a right side plate, and a bottom frame welded together. The short side of the bottom frame is bent multiple times to form an installation structure. Both the left side plate and the right side plate have countersunk holes and through holes. The countersunk holes are used to fix the fan mounting bracket, and the through holes are used to cooperate with the fixing bolts of the rail power supply and are locked by rivet nuts.

4. The back-pack DC remote outdoor power supply of claim 1, wherein, The four sides of the DCAC heat dissipation aluminum plate and the DCDC heat dissipation aluminum plate are all bent at 90°. The DCAC heat dissipation aluminum plate is connected to the press-fit studs of the top cover through the through holes on its bent side, and the DCDC heat dissipation aluminum plate is connected to the press-fit studs of the bottom frame through the through holes on its bent side. Both are respectively attached and fixed to the DCAC plate and the DCDC plate.

5. The back-pack DC remote outdoor power supply of claim 1, wherein, The mounting partition B is formed by bending a rectangular sheet metal part. It has through holes on both sides of the bent edge and is fixed to the bottom of the cabinet cavity by press-fit nuts. The middle area of ​​the mounting partition B is stamped with a cable tie for fixing cables, and its top is connected to the bottom frame of the inverter box cavity by bolts.

6. A back-pack DC remote outdoor power supply unit as claimed in claim 1, wherein, The cabinet door insulation partition is formed by bending the four sides of a rectangular sheet metal part at right angles. Its four corners are fixed to the inner wall of the cabinet door by press-fit studs. Insulation cotton is sandwiched between the cabinet door insulation partition and the cabinet door. The insulation cotton covers the inner surface of the cabinet door and is sealed to the edge of the cabinet cavity by sealing strips.

7. A back-pack type DC remote outdoor power supply unit as claimed in claim 3, wherein, The front of the base frame has inlet and outlet holes for cable entry and exit and a protective coil is installed thereon. The protective coil is fixed to the holes of the base frame by a snap-fit ​​structure. The rear wall of the base frame is provided with press-fit studs. The press-fit studs are matched with the mounting holes of the rail, DTU and rail power supply respectively and are fixed by bolts.

8. A back-pack DC remote outdoor power supply unit as claimed in claim 1, wherein, The bottom reinforcing rib is a bent part, and its two bent edges are welded and fixed to the side plate at the bottom of the cabinet cavity. Insulation cotton is sandwiched between the upper surface of the bottom reinforcing rib and the mounting partition A. The mounting partition A is fixed to the reserved screw hole of the bottom reinforcing rib by bolts, and its surface has through holes for fixing the mounting bracket of the high voltage DC circuit breaker lightning protection.

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