Anti-voltage-loss device of direct-current power supply bus

Abstract

The invention discloses a direct current power supply bus voltage loss prevention device, which comprises two side plates, a same mounting plate is fixed between the two side plates, a same wire box is fixed at the bottoms of the two side plates, an electric energy conversion device is mounted on the mounting plate, the electric energy conversion device comprises an inverter, and the inverter is mounted on the mounting plate. The input end of the inverter is electrically connected with the output end of a voltage stabilizing circuit and the output end of a protection circuit, the input end of the voltage stabilizing circuit is electrically connected with the output end of a power input module through a filter circuit, and the input end of the protection circuit is electrically connected with the output end of a control circuit. The input end of the control circuit is electrically connected with the output end of the power input module through the auxiliary circuit. In combination with upward movement of the U-shaped heat dissipation protection plate, the electric energy conversion device mounted on the mounting plate is exposed, overhaul and maintenance are facilitated, limiting of different dimensions is achieved through the clamping pieces and the clamping rods, the limiting effect is better, and the U-shaped heat dissipation protection plate can be conveniently pulled out and pressed.

Description

Technical Field

[0001] This invention relates to the field of power conversion device technology, and in particular to a DC power bus anti-voltage device. Background Technology

[0002] Electrical energy refers to the ability to perform work in various forms using electricity. It is widely used in power, lighting, chemistry, textiles, communications, broadcasting, and other fields, serving as a major driving force for scientific and technological development and the rapid advancement of the national economy. Electrical energy plays a vital role in our lives. A DC-DC converter is an electrical device that converts DC power into AC power. Communication power supplies are a critical infrastructure of the entire communication network; the communication power supply system is the heart of the communication system. Currently, communication power supplies in stations or headquarters buildings mainly use two AC inputs, which are then rectified by modules to convert the AC power into a 48V DC output.

[0003] The battery pack consists of 24 2V batteries connected in series. It has high requirements for the consistency of individual battery cells. When a single battery cell is abnormal, it will cause the entire battery pack to fail and be unable to discharge. Replacing the individual battery cell or the entire pack cannot completely eliminate the hidden danger and make it difficult to ensure the safe and reliable operation of the system. Damaged internal components are difficult to disassemble and maintain. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a DC power bus undervoltage protection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A DC power bus undervoltage protection device includes two side plates, with a common mounting plate fixed between the two side plates. A common junction box is fixed to the bottom of the two side plates. A power conversion device is mounted on the mounting plate. The power conversion device includes an inverter. The input terminal of the inverter is electrically connected to the output terminals of a voltage regulator circuit and a protection circuit, respectively. The input terminal of the voltage regulator circuit is electrically connected to the output terminal of a power input module through a filter circuit. The input terminal of the protection circuit is electrically connected to the output terminal of a control circuit, and the input terminal of the control circuit is electrically connected to the output terminal of the power input module through an auxiliary circuit. Both mounting plates are fitted with the same U-shaped heat dissipation plate, with both sides of the U-shaped heat dissipation plate protruding from the side plate. The side plate and the U-shaped heat dissipation plate are detachably connected by a locking mechanism.

[0006] As a further embodiment of the present invention, the output terminal of the inverter is electrically connected to the input terminal of the power output module.

[0007] As a further embodiment of the present invention, the outer wall of the U-shaped heat dissipation plate has two mounting holes at its front end, and a heat dissipation fan is fixed inside the mounting holes.

[0008] As a further embodiment of the present invention, the locking mechanism includes a first opening positioning block and a second opening positioning block fixed to the outer wall of the side plate. The same top rod is inserted into the first opening positioning block and the second opening positioning block. The top of the top rod is fixed to the outer wall of the U-shaped heat dissipation plate. A clamp is fixed to the outer wall of the first opening positioning block by a torsion spring. The lower part of the outer wall of the top rod is provided with teeth that are adapted to the clamp. Two clamping rods are installed on the outer wall of the side plate, and the outer wall of the U-shaped heat dissipation plate is provided with a latch that is adapted to the clamping rod. The same I-beam is slidably arranged between the two clamping rods. A fixing block is connected to the middle part of the clamping rod by a torsion spring. The fixing block is fixed to the outer wall of the side plate. Two pressing plates for pressing the clamping rods are installed on the clamp.

[0009] As a further embodiment of the present invention, the card includes a folded plate, the folded plate and the first opening positioning block are fixed by a torsion spring, the bottom of the folded plate is fixed with a card head adapted to the toothed opening, and the extrusion piece is fixed to the outer wall of the folded plate.

[0010] As a further embodiment of the present invention, a limiting rod is fixed in the openings on both sides of the I-beam, and a limiting groove adapted to the limiting rod is provided on the clamping rod.

[0011] As a further embodiment of the present invention, a positioning ring is fixedly sleeved on the upper part of the outer wall of the top rod, a spring is fixed at the bottom of the positioning ring, and the spring is sleeved on the outer wall of the top rod, and the bottom of the spring is fixed to the top of the second opening positioning block.

[0012] As a further embodiment of the present invention, both ends of the bottom of the U-shaped heat dissipation plate are rotatably connected to heat dissipation plates via shafts, and heat dissipation holes are provided on the heat dissipation plates.

[0013] As a further embodiment of the present invention, gears are coaxially fixed on both sides of the heat sink, and a toothed plate that meshes with the gears is fixed on the outer wall of the side plate.

[0014] The beneficial effects of this invention are as follows: This invention: During maintenance, the device can press the clip located on the outer wall of the side plate. The pressed I-beam, under the action of the limiting rod and the limiting groove, causes the locking rod on the fixed block to deflect. The top rod lifts the U-shaped heat dissipation plate upward. When the U-shaped heat dissipation plate moves upward, the heat dissipation plate rotatably connected at the bottom of the U-shaped heat dissipation plate also moves upward. When the gear meshes with the toothed plate, the heat dissipation plate deflects. Combined with the upward movement of the U-shaped heat dissipation plate, the power conversion device mounted on the mounting plate is exposed, facilitating maintenance. The clip and locking rod achieve limiting in different dimensions, resulting in better limiting effect and making it easier to pull out and press the U-shaped heat dissipation plate.

[0015] This invention involves connecting a DC power supply to the power input interface of the power conversion device, then connecting an AC appliance to the power output interface and turning on the power switch. The input DC power is processed by a filter circuit and then regulated by a voltage regulator circuit. After regulation, the DC power is converted into AC power by an inverter to power the AC appliance. Throughout the operation, an auxiliary circuit connects to a control circuit to control the entire power conversion process. A protection circuit protects the control circuit from short circuits or overloads, thus protecting the DC power conversion device. Simultaneously, a cooling fan operates, and combined with ventilation holes, it dissipates heat from the internal components. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a DC power bus anti-voltage device proposed in this invention; Figure 2 This is a partial three-dimensional structural diagram of a DC power bus undervoltage protection device proposed in this invention. Figure 3 This is a partial three-dimensional structural diagram of a DC power bus undervoltage protection device proposed in this invention. Figure 4 This is a three-dimensional structural diagram of the locking mechanism of a DC power bus anti-voltage-loss device proposed in this invention; Figure 5 This is a partial three-dimensional structural diagram of the locking mechanism of a DC power bus anti-undervoltage device proposed in this invention.

[0017] In the diagram: 1. Side plate; 2. Mounting plate; 3. Junction box; 4. U-shaped heat dissipation plate; 5. Heat dissipation plate; 6. Locking mechanism; 7. Heat dissipation fan; 8. Bayonet; 9. Gear; 10. Tooth plate; 11. First opening positioning block; 12. Second opening positioning block; 13. Top rod; 14. Spring; 15. Positioning ring; 16. Toothed edge; 17. Clamping piece; 18. Clamping rod; 19. Fixing block; 20. Folded plate; 21. Clamping head; 22. Extrusion piece; 23. I-beam; 24. Limiting rod; 25. Limiting groove. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1-5 A DC power bus anti-voltage protection device includes two side plates 1, with the same mounting plate 2 fixed between the two side plates 1, and the same junction box 3 fixed at the bottom of the two side plates 1. A power conversion device is mounted on the mounting plate 2. The power conversion device includes an inverter. The input terminal of the inverter is electrically connected to the output terminals of a voltage regulator circuit and a protection circuit, respectively. The input terminal of the voltage regulator circuit is electrically connected to the output terminal of the power input module through a filter circuit. The input terminal of the protection circuit is electrically connected to the output terminal of the control circuit, and the input terminal of the control circuit is electrically connected to the output terminal of the power input module through an auxiliary circuit. Connect the DC power supply to the power input interface on one side of the power conversion device, and then connect the AC appliance to the power output interface. Turn on the power switch. At this time, the input DC power is processed by the filter circuit and then regulated by the voltage regulator circuit. After the voltage regulation is completed, the DC power is converted into AC power by the inverter to power the AC appliance. During the entire operation, the auxiliary circuit is connected to the control circuit to control the entire power conversion operation. The protection circuit can protect the control circuit and prevent short circuits or overloads, thus protecting the DC power conversion device. At the same time, the cooling fan 7 works, and the heat dissipation holes achieve the heat dissipation function of the internal components.

[0021] The same U-shaped heat dissipation plate 4 is fitted on both mounting plates 2. Both sides of the U-shaped heat dissipation plate 4 protrude from the side plate 1. The side plate 1 and the U-shaped heat dissipation plate 4 are detachably connected by a locking mechanism 6.

[0022] In this embodiment, the output terminal of the inverter is electrically connected to the input terminal of the power output module.

[0023] In this embodiment, two mounting holes are opened at the front end of the outer wall of the U-shaped heat dissipation plate 4, and a heat dissipation fan 7 is fixed in the mounting holes.

[0024] In this embodiment, the locking mechanism 6 includes a first opening positioning block 11 and a second opening positioning block 12 fixed to the outer wall of the side plate 1. The same top rod 13 is inserted into the first opening positioning block 11 and the second opening positioning block 12. The top of the top rod 13 is fixed to the outer wall of the U-shaped heat dissipation plate 4. The outer wall of the first opening positioning block 11 is fixed with a clamp 17 by a torsion spring. The lower part of the outer wall of the top rod 13 is provided with toothed slots 16 that are adapted to the clamp 17 at equal intervals. Two clamping rods 18 are installed on the outer wall of the side plate 1, and the outer wall of the U-shaped heat dissipation plate 4 is provided with a latch 8 that is adapted to the clamping rods 18. The same I-beam 23 is slidably arranged between the two clamping rods 18. The middle part of the clamping rod 18 is connected to a fixing block 19 by a torsion spring. The fixing block 19 is fixed to the outer wall of the side plate 1. Two pressing plates 22 that press the clamping rods 18 are installed on the clamping plate 17.

[0025] In this embodiment, the clip 17 includes a folded plate 20, which is fixed to the first opening positioning block 11 by a torsion spring. The bottom of the folded plate 20 is fixed with a clip head 21 that matches the toothed opening 16, and the extrusion piece 22 is fixed to the outer wall of the folded plate 20.

[0026] In this embodiment, limit rods 24 are fixed in the openings on both sides of the I-beam 23, and a limit groove 25 adapted to the limit rod 24 is provided on the clamping rod 18.

[0027] In this embodiment, a positioning ring 15 is fixedly sleeved on the upper part of the outer wall of the top rod 13, and a spring 14 is fixed at the bottom of the positioning ring 15. The spring 14 is sleeved on the outer wall of the top rod 13, and the bottom of the spring 14 is fixed to the top of the second opening positioning block 12.

[0028] In this embodiment, heat sinks 5 are rotatably connected to both ends of the bottom of the U-shaped heat sink 4 via shafts, and heat sinks 5 are provided with heat dissipation holes.

[0029] In this embodiment, gears 9 are coaxially fixed on both sides of the heat sink 5, and a toothed plate 10 that meshes with the gears 9 is fixed on the outer wall of the side plate 1.

[0030] Working principle: During maintenance, the device can press the clip 17 located on the outer wall of the side plate 1. The clip head 21 in the clip 17 is deflected under pressure, disengaging from the toothed slot 16 on the push rod 13. At the same time, the extrusion plate 22 on the folding plate 20 extrudes the I-beam 23. Under the action of the limiting rod 24 and the limiting groove 25, the pressed I-beam 23 rotates, causing the clip rod 18 on the fixed block 19 to deflect, thus disengaging the clip rod 18 from the slot 8 on the outer wall of the U-shaped heat dissipation plate 4. At this time, under the action of the spring 14, the positioning ring 15 and the push rod 13 move upward, and the push rod 13 lifts the U-shaped heat dissipation plate 4. As the U-shaped heat dissipation plate 4 moves upward, the heat dissipation plate 5, which is rotatably connected to the bottom of the U-shaped heat dissipation plate 4, also moves upward. When the gear 9 meshes with the toothed plate 10, the heat dissipation plate 5 deflects, and the two heat dissipation plates 5 unfold outward. Combined with the upward movement of the U-shaped heat dissipation plate 4, the power conversion device installed on the mounting plate 2 is exposed, making it easier to inspect and maintain. Pressing the U-shaped heat dissipation plate 4 causes the locking rod 18 to engage with the locking slot 8, and at the same time, the locking head 21 engages with the locking head 21. The locking piece 17 and the locking rod 18 achieve different dimensions of limitation, which has a better limiting effect and makes it easier to pull out and press the U-shaped heat dissipation plate 4.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A DC power bus undervoltage protection device, comprising two side plates (1), characterized in that, A mounting plate (2) is fixed between the two side plates (1), and a junction box (3) is fixed at the bottom of the two side plates (1). A power conversion device is installed on the mounting plate (2). The power conversion device includes an inverter. The input terminal of the inverter is electrically connected to the output terminals of the voltage regulator circuit and the protection circuit, respectively. The input terminal of the voltage regulator circuit is electrically connected to the output terminal of the power input module through the filter circuit. The input terminal of the protection circuit is electrically connected to the output terminal of the control circuit. The input terminal of the control circuit is electrically connected to the output terminal of the power input module through the auxiliary circuit. The same U-shaped heat dissipation plate (4) is fitted on both mounting plates (2). Both sides of the U-shaped heat dissipation plate (4) protrude from the side plate (1). The side plate (1) and the U-shaped heat dissipation plate (4) are detachably connected by a locking mechanism (6).

2. The DC power bus undervoltage protection device according to claim 1, characterized in that, The output terminal of the inverter is electrically connected to the input terminal of the power output module.

3. The undervoltage protection device for a DC power bus according to claim 1, characterized in that, The outer wall of the U-shaped heat dissipation plate (4) has two mounting holes at the front end, and a heat dissipation fan (7) is fixed in the mounting hole.

4. The DC power bus undervoltage protection device according to claim 3, characterized in that, The locking mechanism (6) includes a first opening positioning block (11) and a second opening positioning block (12) fixed to the outer wall of the side plate (1). The same top rod (13) is inserted into the first opening positioning block (11) and the second opening positioning block (12). The top of the top rod (13) is fixed to the outer wall of the U-shaped heat dissipation plate (4). The outer wall of the first opening positioning block (11) is fixed with a clip (17) by a torsion spring. The lower part of the outer wall of the top rod (13) is equidistantly provided with clips that are compatible with the clip (17). The side plate (1) is equipped with a toothed mouth (16), and two clamping rods (18) are installed on the outer wall of the side plate (1). The outer wall of the U-shaped heat dissipation plate (4) is provided with a clamping mouth (8) that is compatible with the clamping rods (18). The same I-beam (23) is slidably arranged between the two clamping rods (18). The middle part of the clamping rod (18) is connected to a fixing block (19) by a torsion spring. The fixing block (19) is fixed to the outer wall of the side plate (1). Two extrusion plates (22) for extruding the clamping rods (18) are installed on the clamping member (17).

5. The DC power bus undervoltage protection device according to claim 4, characterized in that, The clip (17) includes a folded plate (20), which is fixed to the first opening positioning block (11) by a torsion spring. The bottom of the folded plate (20) is fixed with a clip head (21) that is adapted to the toothed opening (16), and the extrusion piece (22) is fixed to the outer wall of the folded plate (20).

6. The DC power bus undervoltage protection device according to claim 5, characterized in that, Limiting rods (24) are fixed in the openings on both sides of the I-beam (23), and a limiting groove (25) adapted to the limiting rod (24) is provided on the clamping rod (18).

7. The DC power bus undervoltage protection device according to claim 6, characterized in that, A positioning ring (15) is fixedly sleeved on the upper part of the outer wall of the top rod (13). A spring (14) is fixed at the bottom of the positioning ring (15), and the spring (14) is sleeved on the outer wall of the top rod (13). The bottom of the spring (14) is fixed to the top of the second opening positioning block (12).

8. The undervoltage protection device for a DC power bus according to claim 7, characterized in that, The bottom two ends of the U-shaped heat dissipation plate (4) are connected to heat dissipation plates (5) by means of a shaft, and heat dissipation holes are provided on the heat dissipation plates (5).

9. The undervoltage protection device for a DC power bus according to claim 8, characterized in that, Gears (9) are coaxially fixed on both sides of the heat sink (5), and a toothed plate (10) that meshes with the gears (9) is fixed on the outer wall of the side plate (1).

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