Compact high-reliability power supply device

Abstract

The application provides a compact high-reliability power supply device, which comprises a cabinet body, a cabinet door, a movable mounting plate, a radiator, a power module, a circuit board system, a transformer, an inductor and a centrifugal fan. The cabinet body is internally provided with a first mounting cavity and a second mounting cavity, and one side of the cabinet door and the movable mounting plate is rotationally connected with the cabinet body. Part of the circuit board modules of the circuit board system is arranged on the movable mounting plate, the first air inlet hole and the air outlet hole are arranged on the top of the cabinet body, the power module is arranged on the side of the radiator and located in the first mounting cavity, the transformer is located downstream of the second mounting cavity, and the inductor is located upstream of the second mounting cavity. The layout is compact, the heat sources can be prevented from interfering with each other, and the local heat accumulation is reduced. In addition, the airflow in the first mounting cavity is introduced into the radiator and flows to the second mounting cavity by the centrifugal fan, and then is discharged through the air outlet hole. The heat dissipation path is clear, the heat dissipation efficiency is high, and the work is reliable.

Description

Technical Field

[0001] This invention relates to the field of power supply devices, and in particular to a compact and highly reliable power supply device. Background Technology

[0002] An uninterruptible power supply (UPS) is a power electronic device that can continuously provide stable and uninterrupted power to a load when the mains power is abnormal. It is widely used in critical fields such as data centers, industrial control, medical systems and communication base stations, and is a core device to ensure the continuity and stability of power supply.

[0003] Uninterruptible power supplies (UPS) integrate a large number of power semiconductor devices (such as IGBT modules), transformers, inductors, and complex control circuit boards. Many of these devices generate a significant amount of heat during operation, which can negatively impact their performance and reliability. Therefore, efficient heat dissipation is crucial for UPS systems.

[0004] In traditional compact UPS cabinet designs, the layout of components is inefficient, resulting in a cluttered installation that hinders maintenance and increases the overall size of the unit. Furthermore, it leads to chaotic airflow within the cabinet, poor heat dissipation, and the different heat dissipation requirements of various heat-generating components cause severe localized heat accumulation, reducing the overall lifespan and reliability of the power supply unit.

[0005] Therefore, there is a need to provide a compact and highly reliable power supply device to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a compact and highly reliable power supply device to solve the problems of large size, low heat dissipation efficiency, and poor reliability of existing uninterruptible power supplies.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is: a compactly arranged, highly reliable power supply device, comprising: The cabinet has a first mounting cavity and a second mounting cavity vertically separated inside. The top of the cabinet has a first air inlet communicating with the first mounting cavity and an air outlet communicating with the second mounting cavity. The side of the cabinet away from the second mounting cavity has an operation opening. The cabinet door is rotatably connected to the cabinet body on one side and is located on the side where the operating opening is located on the cabinet body, for the purpose of closing the operating opening; The movable mounting plate is rotatably connected to the cabinet body on one side and is located on the side of the cabinet door near the operating opening; A radiator is fixedly installed inside the cabinet. The radiator has a heat dissipation channel inside. The first end of the heat dissipation channel is connected to the first mounting cavity, and the second end of the heat dissipation channel is connected to the second mounting cavity. The second end of the heat dissipation channel is located at the end of the radiator away from the first air inlet. The power module is located inside the first mounting cavity and is disposed on the side of the heat sink; A circuit board system is located within the first mounting cavity. The circuit board system includes multiple circuit board modules, wherein some of the circuit board modules are disposed on the side of the movable mounting plate near the first mounting cavity. The transformer is installed in the second mounting cavity and is located at the end of the radiator away from the first air inlet. An inductor, located within the second mounting cavity and between the transformer and the air outlet; and A centrifugal fan is connected to the first end of the heat dissipation channel, and the airflow direction of the centrifugal fan is towards the second end of the heat dissipation channel.

[0008] In this invention, the power supply device further includes a fixed side plate, which is fixedly connected to the cabinet and located inside the operating opening. The fixed side plate is provided with a second air inlet that communicates with the first mounting cavity.

[0009] The inner wall of the fixed side plate is fixedly connected to multiple first fixed mounting plates, and some of the circuit board modules are mounted on the first fixed mounting plates.

[0010] Furthermore, a capacitor is provided on part of the first fixed mounting plate, and a mounting through hole is provided on the fixed side plate opposite to the capacitor, and an axial fan is fixedly installed in the mounting through hole.

[0011] In addition, the power supply device also includes a second fixed mounting plate, the two ends of which are fixedly connected to the heat sink via support plates, and part of the circuit board module is mounted on the second fixed mounting plate.

[0012] In this invention, the first fixing plate is perpendicular to the fixing side plate, and the second fixing plate is parallel to the fixing side plate.

[0013] In this invention, the inner wall of the cabinet is provided with multiple vertical columns, and the columns are provided with threaded holes and spare threaded holes distributed vertically. The first fixed mounting plate is provided with connecting plates at both ends, and the connecting plates are provided with elongated holes. Screws pass through the elongated holes and are threadedly connected to the threaded holes or the spare threaded holes, thereby fixing the first fixed mounting plate to the columns.

[0014] In this invention, a plurality of centrifugal fans are provided at the first end of the heat dissipation channel, and the turbines of adjacent centrifugal fans are arranged in opposite directions so that the air inlets of adjacent centrifugal fans are staggered.

[0015] In this invention, a support block is provided at the bottom of the cabinet, and a third air inlet is provided at the bottom of the cabinet, which communicates with the first mounting cavity.

[0016] In this invention, the circuit board system, the transformer, and the inductor are electrically connected by a bent conductive sheet, which is made of aluminum alloy.

[0017] In this invention, the rotation axis of the cabinet door is parallel to the rotation axis of the movable mounting plate. The movable mounting plate is fixedly provided with elastic clips and fasteners. The circuit board module is secured by at least one elastic clip on one diagonal side and by at least one fastener on the other diagonal side. The fastener includes a main block, a flexible main plate, an extension plate, a locking block, and an unlocking block. The main block is fixedly connected to the movable mounting plate. The flexible main plate is connected to the side of the main block near the circuit board module. The locking block and the extension plate are respectively arranged on the two adjacent sides of the flexible main plate. The extension plate is bent away from the circuit board module. The unlocking block is arranged on one side of the extension plate. An unlocking hole is provided on the main block corresponding to the position of the unlocking block. The unlocking hole also passes through the movable mounting plate. A pressing rod is fixedly installed on the inner side of the cabinet door, and the position of the pressing rod is opposite to the unlocking hole. A limit rod is rotatably installed on the inner side of the cabinet door, and the rotation axis of the limit rod is parallel to the inner side of the cabinet door. When the limit rod is upright and in contact with the movable mounting plate, the pressing rod is a set distance away from the unlocking block. When the limit rod is flipped over, the pressing rod can press the unlocking block.

[0018] Compared to existing technologies, the advantages of this invention are as follows: The compactly arranged high-reliability power supply device of this invention places some circuit board modules on a movable mounting plate, facilitating the placement of the first air inlet and outlet at the top of the cabinet. Simultaneously, the power module is located in the first mounting cavity and positioned on the side of the heat sink, the transformer is located downstream of the second mounting cavity, and the inductor is located upstream of the second mounting cavity. This compact layout avoids mutual interference between heat sources and reduces localized heat accumulation. Furthermore, the heat dissipation structure combines a heat sink, a centrifugal fan, and multiple air inlets. The centrifugal fan controls the airflow from the first mounting cavity to be introduced into the heat sink and then flows to the second mounting cavity, before being discharged through the outlet. This clear heat dissipation path results in high heat dissipation efficiency and reliable operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of the present invention.

[0020] Figure 1 This is a schematic diagram of a preferred embodiment of the compactly arranged, highly reliable power supply device of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the compactly arranged, highly reliable power supply device of the present invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the compact, highly reliable power supply device of the present invention when the cabinet door and some partitions are removed.

[0023] Figure 4 This is a structural diagram of the compact, highly reliable power supply device of the present invention when multiple side panels of the cabinet are removed.

[0024] Figure 5 This is a partial structural diagram of the power module of the compactly arranged high-reliability power supply device of the present invention.

[0025] Figure 6 for Figure 2 Enlarged view of the partial structure at the connection between the first fixed mounting plate and the column.

[0026] Figure 7 This is a schematic diagram of the structure of the cabinet door in this invention, which features a pressing rod and a limiting rod on the inner side.

[0027] Figure 8 This is a schematic diagram of the card firmware in this invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The directional terms mentioned in this invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this invention, and are not intended to limit this invention.

[0030] The terms "first" and "second" used in the terminology of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as limiting the order of events.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The layout of uninterruptible power supply (UPS) devices in existing technologies is inadequate, resulting in a haphazard installation that hinders maintenance and increases overall size. Furthermore, it leads to chaotic airflow within the cabinet, poor heat dissipation, and the different heat dissipation requirements of various heat-generating components cause severe localized heat accumulation, reducing the overall lifespan and reliability of the power supply unit.

[0033] The following is a preferred embodiment of a compact, highly reliable power supply device provided by the present invention that can solve the above-mentioned technical problems.

[0034] Please refer to Figures 1-4 In the diagram, units with similar structures are represented by the same labels.

[0035] This embodiment provides a compact and highly reliable power supply device, which includes a cabinet 101, a cabinet door 102, a movable mounting plate 105, a heat sink 103, a power module 115, a circuit board system, a transformer 106, an inductor 107, and a centrifugal fan 108.

[0036] The cabinet 101 has a first mounting cavity 1014 and a second mounting cavity 1015 vertically separated inside. The top of the cabinet 101 has a first air inlet 1011 communicating with the first mounting cavity 1014 and an air outlet 1012 communicating with the second mounting cavity 1015. The side of the cabinet 101 away from the second mounting cavity 1015 has an operation opening.

[0037] The interior of the cabinet 101 can be divided by a partition 1013 to form a vertical first mounting cavity 1014 and a second mounting cavity 1015. In this embodiment, the first mounting cavity 1014 is wider at the top and narrower at the bottom, so that a centrifugal fan 108 can be installed upstream of the first mounting cavity 1014, and at the same time, it is conducive to airflow convergence and improves air intake efficiency.

[0038] The cabinet door 102 is rotatably connected to the cabinet body 101 on one side and is located on the side of the operating opening on the cabinet body 101. It is used to close the operating opening and open the cabinet door 102 to facilitate maintenance operations on the internal components.

[0039] Please refer to Figure 3 and Figure 4 The movable mounting plate 105 is rotatably connected to the cabinet 101 on one side and is located on the side of the cabinet door 102 near the operating opening. This efficiently utilizes the space inside the cabinet 101 near the operating opening, allowing sufficient space at the top of the cabinet 101 for the installation of the first air inlet 1011 and air outlet 102. The overall structure is also more compact, smaller in size, and lower in cost. Furthermore, the movable mounting plate 105 can be flipped outwards, allowing the circuit board module 104 mounted on it to be quickly exposed to the operator's view for disassembly, assembly, and maintenance.

[0040] Please refer to Figure 3 The radiator 103 is fixedly installed inside the cabinet 101. The radiator 103 has a heat dissipation channel inside. The first end of the heat dissipation channel is connected to the first mounting cavity 1014, and the second end of the heat dissipation channel is connected to the second mounting cavity 1015. The second end of the heat dissipation channel is located at the end of the radiator 103 away from the first air inlet 1011.

[0041] Specifically, in this embodiment, the heat sink 103 is located at the upper part of the first mounting cavity 1014 and is fixedly connected to the partition. The heat dissipation channel inside the heat sink 103 connects the first mounting cavity 1014 and the second mounting cavity 1015, forming a continuous heat dissipation path.

[0042] Understandably, there are many heat sinks distributed inside the radiator 103.

[0043] Please refer to Figure 5 The power module 115 is located within the first mounting cavity 1014 and is disposed on the side of the heat sink 103. As one of the main heat sources, the power module 115 is directly attached to the side of the heat sink 103, which can significantly shorten the heat conduction path, allowing heat to be quickly transferred to the heat sink 103 and then quickly dissipated through the heat dissipation channel, effectively reducing the operating temperature of the power module 115. The rapid heat dissipation improves the operational reliability of the power module 115.

[0044] Please refer to Figures 2-4 The circuit board system is located within the first mounting cavity 1014 and includes multiple circuit board modules 104, some of which are mounted on the side of the movable mounting plate 105 near the first mounting cavity 1014. This fully utilizes the space of the first mounting cavity 1014 and facilitates subsequent maintenance. The movable mounting plate 105 can be flipped open, making the circuit board modules 104 easy to inspect and repair, thus improving maintainability.

[0045] Please refer to Figure 3 The transformer 106 is installed in the second mounting cavity 1015 and is located at the end of the radiator 103 away from the first air inlet 1011.

[0046] Inductor 107 is located within the second mounting cavity 1015, and between transformer 106 and air outlet 102. Centrifugal fan 108 is connected to the first end of the heat dissipation channel, and the airflow direction of centrifugal fan 108 is towards the second end of the heat dissipation channel.

[0047] Both transformer 106 and inductor 107 are heat-generating elements. A partition 1013 isolates the interior of cabinet 101 into two independent mounting cavities: a first mounting cavity 1014 and a second mounting cavity 1015. This separates the power module 115 from the heat-generating elements such as transformer 106 and inductor 107, preventing mutual interference of heat sources. Transformer 106 and inductor 107 are arranged in the second mounting cavity 1015, sequentially along the airflow direction to prevent localized heat accumulation. Simultaneously, transformer 106 is positioned at the airflow outlet of radiator 103, allowing it to receive airflow heated by radiator 103, achieving cascaded utilization and discharge of heat.

[0048] Please refer to Figure 3 In this embodiment, the power supply device further includes a fixed side plate 109, which is fixedly connected to the cabinet 101. The fixed side plate 109 is located inside the operation opening, and a second air inlet 1091 communicating with the first mounting cavity 1014 is provided on the fixed side plate 109. Correspondingly, a ventilation hole 1021 is also provided on the cabinet door 102.

[0049] The second air inlet 1091 and the first air inlet 1011 together form a multi-position air inlet structure, which increases the air inlet area and air inlet efficiency, ensuring that there is sufficient cold air replenishment in the first mounting cavity 1014 to meet the heat dissipation needs of each heat-generating device.

[0050] Please refer to Figure 2 and Figure 3 In this case, multiple first fixed mounting plates 110 are fixedly connected to the inner side wall of the fixed side plate 109, and some circuit board modules 104 are disposed on the first fixed mounting plates 110.

[0051] Furthermore, some of the first fixed mounting plates 110 are provided with capacitors 112, that is, the multiple first fixed mounting plates 110 distributed in layers can be used to set the circuit board module 104 and can also be used to set the capacitors 112.

[0052] A mounting through hole 1092 is provided on the fixed side plate 109 opposite to the capacitor 112, and an axial fan 113 is fixedly installed in the mounting through hole 1092. This allows for targeted heat dissipation of the capacitor 112, preventing excessive local temperature rise, extending the service life of the capacitor 112, and improving the overall reliability of the power supply device. It also further improves the airflow efficiency within the first mounting cavity 1014.

[0053] Please refer to Figure 5 In this embodiment, the power supply device also includes a second fixed mounting plate 111. The two ends of the second fixed mounting plate 111 are fixedly connected to the heat sink 103 through support plates 1111. Part of the circuit board module 104 is disposed on the second fixed mounting plate 111.

[0054] Among them, the support plate 1111 can be set as a hollow structure with multiple ventilation holes, which is conducive to air flow and improves heat dissipation performance.

[0055] In this embodiment, the first fixed mounting plate 110, the second fixed mounting plate 111, and the movable mounting plate 105 work together to provide stable mounting bases for multiple circuit board modules 104 at different positions, enabling the circuit board system to be arranged in layers and sections, which saves space and facilitates wiring.

[0056] Preferably, the first mounting plate 110 is perpendicular to the fixed side plate 109, and the second mounting plate 111 is parallel to the fixed side plate 109. The first mounting plate 110 and the second mounting plate 111 adopt two different orientations, which allows the circuit board module 104 to be arranged three-dimensionally at different angles, making full use of the internal space of the cabinet 101, while avoiding airflow obstruction between circuit boards, which helps to form a uniform heat dissipation environment.

[0057] It should also be noted that the perpendicularity and parallelism of the first fixed mounting plate 110 and the second fixed mounting plate 111 are only to define the approximate relative positional relationship between the two, and are not limited to absolute perpendicularity. There may be a certain angular deviation, for example, there may be actual processing and installation errors. It is not used to limit the present invention.

[0058] Please refer to Figure 6In this embodiment, the inner wall of the cabinet 101 is provided with multiple vertical columns 1017. Threaded holes and spare threaded holes 10171 are vertically distributed along the column 1017. Connecting plates 1101 are provided at both ends of the first fixed mounting plate 110. Elongated holes 11011 are provided on the connecting plates 1101. Screws pass through the elongated holes 11011 and are threaded into the threaded holes or spare threaded holes 10171, thereby fixing the first fixed mounting plate 110 to the columns 1017. Through the multiple sets of threaded holes and spare threaded holes 10171 on the columns 1017, combined with the elongated holes 11011 on the connecting plates 1101, the installation position of the first fixed mounting plate 110 can be flexibly adjusted. It can be adjusted up and down according to the actual component dimensions, enhancing the assembly adaptability and maintainability of the device.

[0059] Please refer to Figure 4 and Figure 5 In this embodiment, a plurality of centrifugal fans 108 are provided at the first end of the heat dissipation channel. The turbines of adjacent centrifugal fans are arranged in opposite directions so that the air inlet ends of adjacent centrifugal fans are staggered, which can effectively improve the air intake efficiency and working performance of the centrifugal fans 108, reduce local wind pressure fluctuations at the air inlet end, and reduce airflow interference.

[0060] In this embodiment, a support block 116 is provided at the bottom of the cabinet 101, and a third air inlet 1016 communicating with the first mounting cavity 1014 is provided at the bottom of the cabinet 101. The support block 116 maintains a certain gap between the bottom of the cabinet 101 and the ground, providing air intake space for the third air inlet 1016, increasing the bottom air intake channel, further supplementing the cold air in the first mounting cavity 1014, forming a multi-position air intake structure, and improving the overall heat dissipation capacity.

[0061] Please refer to Figure 3 and Figure 4 In this embodiment, the power supply device also includes input / output terminals, switches, and other components. These components, including the input / output terminals, switches, circuit board system, transformer 106, and inductor 107, are electrically connected via bent conductive sheets 114, which are made of aluminum alloy. The bent aluminum alloy conductive sheets 114 replace traditional copper cables, reducing connection resistance, heat generation, and cost. Furthermore, they facilitate standardized three-dimensional wiring within a limited space, resulting in neater internal wiring and improved reliability and assembly efficiency of electrical connections.

[0062] Please refer to Figure 3 , Figure 7 and Figure 8In this invention, the rotation axis of the cabinet door 102 is parallel to the rotation axis of the movable mounting plate 105. The movable mounting plate 105 is fixedly equipped with elastic locking plates and fasteners 117. Two opposite corners of the circuit board module 104 are secured by at least one elastic locking plate, and the other opposite corners are secured by at least one fastener 117. That is, the two elastic locking plates and two fasteners 117 can limit the movement of the circuit board module 104 on all four sides. When the two fasteners 117 unlock the circuit board module 104, the circuit board module 104 can move towards the fasteners 117, thus rendering the other two elastic locking plates ineffective.

[0063] In this embodiment, the circuit board module 104 is also fixedly connected to the movable mounting plate 105 by a small number of screws.

[0064] Understandably, with the flexible clamping plate and fastener 117 securing the circuit board module 104, the number of screws used can be greatly reduced, thereby improving the ease of assembly and disassembly of the circuit board module 104.

[0065] The structure of the flexible plate is equivalent to Figure 8 The connection structure between the medium elastic main plate 1172 and the card block 1173.

[0066] The card holder 117 includes a main body block 1171, a flexible main body plate 1172, an extension plate 1174, a card block 1173, and an unlocking block 1175.

[0067] The main body block 1171 is fixedly connected to the movable mounting plate 105. An elastic main body plate 1172 is connected to the side of the main body block 1171 closest to the circuit board module 104. A locking block 1173 and an extension plate 1174 are respectively provided on the adjacent sides of the elastic main body plate 1172. The extension plate 1174 is bent away from the circuit board module 104. An unlocking block 1175 is located on one side of the extension plate 1174. An unlocking hole 11711 is provided on the main body block 1171 corresponding to the position of the unlocking block 1175, and the unlocking hole 11711 also passes through the movable mounting plate 105. The extension plate 1174 is bent to allow the unlocking block 1175 to be misaligned with the circuit board module 104, so that the pressing rod 118 can be inserted into the unlocking hole 11711 to press the unlocking block 1175.

[0068] A pressing rod 118 is fixedly installed on the inner side of the cabinet door 102. The pressing rod 118 is positioned opposite the unlocking hole 11711. A limiting rod 119 is rotatably installed on the inner side of the cabinet door 102. The rotation axis of the limiting rod 119 is parallel to the inner side of the cabinet door 102. When the limiting rod 119 is upright and in contact with the movable mounting plate 105 (the limiting rod 119 is upright, that is, approximately perpendicular to the cabinet door 102), the pressing rod 118 is at a set distance from the unlocking block 1175. When the limiting rod 119 is flipped over, the pressing rod 118 can press the unlocking block 1175, thereby driving the locking block 1173 to move away from the circuit board module 104 to unlock, thus allowing the circuit board module 104 to be easily removed.

[0069] When the limiting rod 119 is upright, it abuts against the cabinet door 102 and the movable mounting plate 105, forming a physical barrier. At this time, the pressing rod 118 cannot be inserted into the unlocking hole 11711 and cannot contact the unlocking block 1175. Therefore, regardless of how the cabinet door 102 and the movable mounting plate 105 rotate relative to each other, the pressing rod 118 cannot drive the locking block 1173 to move, and the circuit board module 104 remains locked. This prevents accidental unlocking due to the relative movement of the cabinet door 102 and the movable mounting plate 105 in a non-disassembled state, improving the safety of equipment maintenance. When it is necessary to disassemble the circuit board module 104, simply flip the limiting rod 119 and place it flat inside the cabinet door 102. Then, rotate the cabinet door 102 and the movable mounting plate 105 closer together. The pressing rod 118 can be smoothly inserted into the unlocking hole 11711 and apply pressure to the unlocking block 1175, causing the elastic main plate 1172 to deform and the locking block 1173 to disengage from the circuit board module 104, thereby unlocking and disassembling very conveniently.

[0070] The working principle of this invention is as follows: When this power supply device is working, external cold air enters the first mounting cavity 1014 through the first air inlet 1011 at the top of the cabinet 101, the third air inlet 1016 at the bottom of the cabinet 101, and the second air inlet 1091 on the fixed side plate 109. At the same time, the axial fan 113 provides auxiliary heat dissipation to the area where the capacitor 112 is located, enhancing the local cooling effect.

[0071] The centrifugal fan 108, located at the first end of the heat dissipation channel, starts running and blows the cool air in the first mounting cavity 1014 into the heat dissipation channel inside the radiator 103. Since the power module 115 is attached to the side of the radiator 103, the large amount of heat generated during its operation is quickly transferred to the radiator 103 through heat conduction and absorbed by the radiator 103. The radiator 103 then dissipates heat efficiently through the airflow in the heat dissipation channel.

[0072] The airflow flows along the heat dissipation channel to the second end and enters the second mounting cavity 1015. Within the second mounting cavity 1015, the airflow flows sequentially through the transformer 106 and the inductor 107, carrying away the heat generated during their operation. Finally, the heat-laden airflow is discharged outside the cabinet 101 through the air outlet 1012 at the top of the cabinet 101.

[0073] In the aforementioned airflow path, the first mounting cavity 1014 adopts a structure that is wider at the top and narrower at the bottom, effectively guiding the airflow to converge towards the centrifugal fan 108; the turbines of adjacent centrifugal fans 108 are arranged in opposite directions, causing the air inlet ends to be misaligned, reducing airflow interference and improving air intake efficiency. The transformer 106 and the inductor 107 are arranged sequentially along the airflow direction to avoid local heat accumulation and achieve tiered heat discharge.

[0074] This completes the heat dissipation process of the compactly arranged, highly reliable power supply device in this preferred embodiment during operation.

[0075] The compactly arranged high-reliability power supply device of this preferred embodiment places some circuit board modules on a movable mounting plate to facilitate the setting of a first air inlet and an air outlet on the top of the cabinet. At the same time, the power module is located in the first mounting cavity and is set on the side of the heat sink, the transformer is located downstream of the second mounting cavity, and the inductor is located upstream of the second mounting cavity. The compact layout can avoid mutual interference of heat sources and reduce local heat accumulation.

[0076] In addition, a heat dissipation structure combining a radiator, a centrifugal fan, and multiple air inlets is adopted. The centrifugal fan controls the airflow from the first mounting cavity to be introduced into the radiator and then to the second mounting cavity, before being discharged through the air outlets. The heat dissipation path is clear, the heat dissipation efficiency is high, and the operation is reliable. Through the synergistic effect of the above-mentioned structural layout and airflow path, this power supply device achieves zoned arrangement and targeted heat dissipation of key heat-generating components, forming a clear, unidirectional, and efficient heat dissipation path. This ensures that the device can maintain a low operating temperature under high power density conditions, thereby improving overall operational reliability.

[0077] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A compactly arranged, highly reliable power supply device, characterized in that, include: The cabinet has a first mounting cavity and a second mounting cavity vertically separated inside. The top of the cabinet has a first air inlet communicating with the first mounting cavity and an air outlet communicating with the second mounting cavity. The side of the cabinet away from the second mounting cavity has an operation opening. The cabinet door is rotatably connected to the cabinet body on one side and is located on the side where the operating opening is located on the cabinet body, for the purpose of closing the operating opening; The movable mounting plate is rotatably connected to the cabinet body on one side and is located on the side of the cabinet door near the operating opening; A radiator is fixedly installed inside the cabinet. The radiator has a heat dissipation channel inside. The first end of the heat dissipation channel is connected to the first mounting cavity, and the second end of the heat dissipation channel is connected to the second mounting cavity. The second end of the heat dissipation channel is located at the end of the radiator away from the first air inlet. The power module is located inside the first mounting cavity and is disposed on the side of the heat sink; A circuit board system is located within the first mounting cavity. The circuit board system includes multiple circuit board modules, wherein some of the circuit board modules are disposed on the side of the movable mounting plate near the first mounting cavity. The transformer is installed in the second mounting cavity and is located at the end of the radiator away from the first air inlet. An inductor is located within the second mounting cavity and between the transformer and the air outlet. as well as A centrifugal fan is connected to the first end of the heat dissipation channel, and the airflow direction of the centrifugal fan is towards the second end of the heat dissipation channel; The rotation axis of the cabinet door is parallel to the rotation axis of the movable mounting plate. The movable mounting plate is fixedly provided with elastic clips and fasteners. The circuit board module is secured by at least one elastic clip on one diagonal side and by at least one fastener on the other diagonal side. The fastener includes a main block, a flexible main plate, an extension plate, a locking block, and an unlocking block. The main block is fixedly connected to the movable mounting plate. The flexible main plate is connected to the side of the main block near the circuit board module. The locking block and the extension plate are respectively arranged on the two adjacent sides of the flexible main plate. The extension plate is bent away from the circuit board module. The unlocking block is arranged on one side of the extension plate. An unlocking hole is provided on the main block corresponding to the position of the unlocking block. The unlocking hole also passes through the movable mounting plate. A pressing rod is fixedly installed on the inner side of the cabinet door, and the position of the pressing rod is opposite to the unlocking hole. A limit rod is rotatably installed on the inner side of the cabinet door, and the rotation axis of the limit rod is parallel to the inner side of the cabinet door. When the limit rod is upright and in contact with the movable mounting plate, the pressing rod is a set distance away from the unlocking block. When the limit rod is flipped over, the pressing rod can press the unlocking block.

2. The compactly arranged, highly reliable power supply device according to claim 1, characterized in that, The power supply device also includes a fixed side plate, which is fixedly connected to the cabinet and located inside the operating opening. The fixed side plate is provided with a second air inlet that communicates with the first mounting cavity.

3. The compactly arranged, highly reliable power supply device according to claim 2, characterized in that, Multiple first mounting plates are fixedly connected to the inner wall of the fixed side plate, and some of the circuit board modules are mounted on the first mounting plates.

4. The compactly arranged, highly reliable power supply device according to claim 3, characterized in that, A capacitor is provided on the first fixed mounting plate, and a mounting through hole is provided on the fixed side plate opposite to the capacitor. An axial fan is fixedly installed in the mounting through hole.

5. The compactly arranged, highly reliable power supply device according to claim 3, characterized in that, The power supply device also includes a second fixed mounting plate, the two ends of which are fixedly connected to the heat sink via support plates, and part of the circuit board module is mounted on the second fixed mounting plate; The first mounting plate is perpendicular to the fixed side plate, and the second mounting plate is parallel to the fixed side plate.

6. The compactly arranged, highly reliable power supply device according to claim 3, characterized in that, The inner wall of the cabinet is provided with multiple vertical columns. Threaded holes and spare threaded holes are distributed vertically along the columns. Connecting plates are provided at both ends of the first fixed mounting plate. The connecting plates are provided with elongated holes. Screws pass through the elongated holes and are threadedly connected to the threaded holes or the spare threaded holes, thereby fixing the first fixed mounting plate to the columns.

7. The compactly arranged, highly reliable power supply device according to claim 1, characterized in that, The first end of the heat dissipation channel is provided with a plurality of centrifugal fans, and the turbines of adjacent centrifugal fans are arranged in opposite directions so that the air inlets of adjacent centrifugal fans are staggered.

8. The compactly arranged, highly reliable power supply device according to claim 1, characterized in that, The bottom of the cabinet is provided with a support block, and the bottom of the cabinet is provided with a third air inlet that communicates with the first mounting cavity.

9. The compactly arranged, highly reliable power supply device according to claim 1, characterized in that, The circuit board system, the transformer, and the inductor are electrically connected by a bent conductive sheet, which is made of aluminum alloy.

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