Dual-power-supply switching type power distribution cabinet

Abstract

The utility model discloses a dual power supply switching type power distribution cabinet, which relates to the field of power distribution cabinets, and is characterized in that the power distribution cabinet comprises a power distribution cabinet main body, a dual power supply switching device is arranged at the upper part of the back of the power distribution cabinet main body, and one interface of the dual power supply switching device is connected with an external power supply. One interface is connected with a storage battery on the power distribution cabinet main body, and the storage battery is also connected with an external power supply, so that normal operation of power distribution cabinet equipment can be guaranteed, and chain reactions such as industrial equipment shutdown, business system paralysis, medical equipment interruption and data loss caused by sudden power failure are avoided; and meanwhile, a secondary fault of a regional power system is effectively prevented through a dual-power seamless switching mechanism, and the reliability and the safety of power supply are improved.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinets, and more specifically, it relates to a dual-power switching power distribution cabinet. Background Technology

[0002] A distribution cabinet is a core device in a power system used for distributing, controlling, and protecting electrical energy. It typically consists of a metal cabinet, circuit breakers, switches, meters, protective devices, and busbars. Its main function is to distribute the electrical energy input from the main power source to multiple branch circuits through its internal circuitry. It also provides overload, short-circuit, and leakage protection functions, and monitors parameters such as voltage and current in real time. Distribution cabinets are widely used in industrial plants, commercial buildings, residential communities, hospitals, schools, and other similar settings.

[0003] However, when the power grid suddenly loses power due to faults, maintenance, or natural disasters, traditional distribution cabinets lack independent energy storage or backup power switching mechanisms, causing their internal control modules, circuit breakers, and monitoring equipment to immediately fail. This phenomenon can trigger a multi-dimensional chain reaction: production lines in the industrial sector are forced to shut down due to power interruption, and precision equipment may suffer mechanical damage or data loss due to sudden power loss; POS systems, refrigeration equipment, and security systems in commercial establishments cease operation, directly causing transaction interruptions and product spoilage; life support equipment, surgical instruments, and cold chain logistics in medical facilities face the risk of paralysis, threatening patient safety; if server clusters in data centers cannot switch to backup power in time after a power outage, it will lead to large-scale data loss and business interruption. In addition, power outages in distribution cabinets may also trigger secondary faults in the regional power system, such as equipment burnout or fire hazards caused by voltage fluctuations. These losses not only involve direct economic costs but may also have long-term negative impacts on public safety, social order, and corporate reputation.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a dual-power switching distribution cabinet. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual power supply switching distribution cabinet.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-power switching distribution cabinet, comprising a distribution cabinet body, wherein a dual-power switching device is installed on the upper back of the distribution cabinet body, wherein one interface of the dual-power switching device is connected to an external power source, and the other interface is connected to a battery on the distribution cabinet body, and the battery is also connected to an external power source.

[0007] Preferably, the connector between the external power source and the battery and the dual power switching device has grooves on both the upper and lower sides. The surface of the dual power switching device is provided with locking components on the upper and lower sides of the interface to insert the protrusions into the grooves and fix their positions.

[0008] Preferably, the locking component includes horizontal plates fixed on the upper and lower sides of the surface of the dual power switching device, and a screw A is fixedly connected between the horizontal plates. A movable plate is sleeved on both the upper and lower sides of the screw A. A through hole A is opened on the movable plate for the screw A to pass through. Nuts A are threadedly connected to both the upper and lower sides of the movable plate. The protrusion is fixed on both sides of the surface of the movable plate.

[0009] Preferably, guide rails are fixedly connected to both sides of the surface of the dual power switching device, and both sides of the moving plate are slidably connected to the guide rails by sliders, so that the moving plate can move vertically in a straight line by the guide rails and sliders.

[0010] Preferably, the battery is detachably connected to the main body of the distribution cabinet, which facilitates battery replacement.

[0011] Preferably, connecting plates are fixedly connected to both sides of the battery, and screws B are fixedly connected to both sides of the back of the main body of the distribution cabinet. A through hole B is provided on the connecting plate for the screws B to pass through, and a nut B is threadedly connected to the outer wall of the screws B.

[0012] Preferably, the dual power supply switching device integrates overload protection and short circuit protection modules.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model can ensure the normal operation of the power distribution cabinet equipment and avoid the chain reaction caused by sudden power outages, such as industrial equipment shutdown, commercial system paralysis, medical equipment interruption, and data loss. At the same time, it can effectively prevent secondary faults in the regional power system through a seamless dual power supply switching mechanism, thereby improving the reliability and safety of power supply. This solves the problem in the background technology that traditional power distribution cabinets lack independent energy storage or backup power switching mechanisms, which leads to the immediate failure of their internal control modules, circuit breakers and monitoring equipment.

[0015] 2. The dual power supply switching device of this utility model integrates overload protection and short circuit protection modules, which can monitor current abnormalities in real time during the dual power supply switching process and cut off the fault circuit through millisecond-level response to prevent equipment damage, fire and other safety accidents caused by overload or short circuit. At the same time, it suppresses the impact of surge current on the load and ensures the system stability during seamless switching of backup power.

[0016] 3. The present invention has grooves on both the upper and lower sides of the connector connecting the external power supply and the battery to the dual power switching device. The surface of the dual power switching device is provided with locking components on the upper and lower sides of the interface to insert the protrusion into the groove and fix its position, so as to prevent the interface from loosening due to external vibration.

[0017] 4. This utility model designs a detachable connection between the battery and the main body of the distribution cabinet, which makes it convenient to replace the battery when it is damaged. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the specific structure of the back of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of the local structure of A;

[0022] Figure 4 This utility model Figure 2 Enlarged view of the local structure of B;

[0023] Figure 5 This is a schematic diagram of the structure of this utility model without a battery installed.

[0024] In the diagram: 1. Main body of the distribution cabinet; 2. Dual power switching device; 3. Battery; 4. Groove; 5. Protrusion; 6. Locking assembly; 601. Horizontal plate; 602. Screw A; 603. Moving plate; 604. Through hole A; 605. Nut A; 606. Guide rail; 607. Slider; 7. Connecting plate; 8. Screw B; 9. Through hole B; 10. Connector; 11. Interface; 12. Nut B. Detailed Implementation

[0025] like Figure 1-5 As shown, this utility model provides a dual power switching distribution cabinet, including a distribution cabinet body 1. A dual power switching device 2 is installed on the upper part of the back of the distribution cabinet body 1. One interface 11 of the dual power switching device 2 is connected to an external power source, and the other interface 11 is connected to a battery 3 on the distribution cabinet body 1. The battery 3 is also connected to an external power source.

[0026] When the external power supply is normal, the dual power switching device 2 automatically selects the external power supply to power the main body of the distribution cabinet 1, and at the same time, the external power supply charges the battery 3 until the battery 3 is fully charged. Then, the charging control module inside the device automatically disconnects the external power supply to stop the power supply, ensuring that the battery 3 is in a fully charged standby state. When the external power supply is faulty or the voltage is abnormal due to a power outage, the dual power switching device 2 monitors the interruption of the main power supply in real time and immediately switches to the battery 3 power supply mode. The battery 3 continuously provides stable power to the control module, circuit breaker, monitoring equipment and other key components in the distribution cabinet, ensuring the normal operation of the equipment and avoiding the chain reaction caused by sudden power outages, such as industrial equipment shutdown, commercial system paralysis, medical equipment interruption, and data loss. At the same time, the seamless dual power switching mechanism effectively prevents secondary faults in the regional power system and improves the reliability and safety of power supply.

[0027] The dual power supply switching device 2 is powered by an internal battery and consists of a switch body, a controller, and auxiliary modules. The switch body is available in two types: PC-class (integrated load switch) and CB-class (circuit breaker combination). The former uses an electromechanical integrated structure and achieves smooth switching via motor drive, while the latter consists of two molded case circuit breakers with mechanical interlocking, also providing short-circuit protection. The controller, based on a microprocessor, integrates voltage sensors and logic control circuits to monitor the voltage, frequency, and phase parameters of the two power supplies in real time. When overvoltage, undervoltage, or loss of voltage is detected in the main power supply, the controller triggers a switching command after a preset delay, driving the switch body via motor to switch from the main power supply to the backup power supply. After the main power supply is restored, the controller selects whether to switch back. (The dual power supply switching device 2 is existing equipment and will not be described in detail here.)

[0028] Furthermore, the dual power supply switching device 2 integrates overload and short-circuit protection modules, which can monitor current anomalies in real time during dual power supply switching and cut off faulty circuits with millisecond-level response to prevent equipment damage, fires, and other safety accidents caused by overloads or short circuits. At the same time, it suppresses the impact of surge current on the load and ensures system stability during seamless switching of backup power. This integrated design not only simplifies the power distribution cabinet architecture and saves space, but also extends equipment life by limiting abnormal currents. Together with the dual power supply switching function, it forms a double protection barrier, significantly improving the power supply reliability and security in highly sensitive fields such as medical and data centers.

[0029] The connector 10 connecting the external power source and battery 3 to the dual power switching device 2 has grooves 4 on both the upper and lower sides. The surface of the dual power switching device 2 has locking components 6 on both the upper and lower sides of the interface 11, which insert protrusions 5 into the grooves 4 and fix their positions to prevent the interface 11 from loosening due to external vibration. The specific structure of the locking component 6 is as follows: The locking component 6 includes horizontal plates 601 fixed to the upper and lower sides of the surface of the dual power switching device 2, and the horizontal plates 601... A screw A602 is fixedly connected between the two sides. A movable plate 603 is fitted on both the upper and lower sides of the screw A602. A through hole A604 is opened on the movable plate 603 for the screw A602 to pass through. Nuts A605 are threadedly connected to both the upper and lower sides of the movable plate 603. A protrusion 5 is fixed on both sides of the surface of the movable plate 603. A guide rail 606 is fixedly connected to both sides of the surface of the dual power switching device 2. Both sides of the movable plate 603 are slidably connected to the guide rail 606 through a slider 607.

[0030] When the connector 10 on the external power source and battery 3 is inserted into the interface 11 of the dual power switching device 2, the protrusion 5 on the moving plate 603 aligns perfectly with the groove 4 on the connector 10. Then, the upper and lower moving plates 603 are pushed towards the center, causing the protrusion 5 to move towards the center. The slider 607 on the moving plate 603 also slides along the guide rail 606 to maintain the linear movement of the moving plate 603 until the protrusion 5 on the upper and lower moving plates 603 is inserted into the groove 4 on the connector 10. Then, the upper and lower screws A602 are rotated. The nut A605 on the side moves the two nuts A605 towards the middle and abuts against the moving plate 603, thereby fixing the position of the protrusion 5 and securing the connector 10 firmly in the interface 11. This ensures a secure connection between the interface 11 and the connector 10 and prevents the connection from loosening. Conversely, rotating the nut A605 in the opposite direction moves the two nuts A605 up and down along the screw A605, and then pushes the two moving plates 603 up and down, pulling the protrusion 5 out of the groove 4, thus releasing the reinforcement of the connection between the interface 11 and the connector 10.

[0031] Furthermore, this utility model designs a detachable connection between the battery 3 and the main body 1 of the distribution cabinet, which makes it convenient to replace the battery 3 when it is damaged. Both sides of the battery 3 are fixedly connected to a connecting plate 7, and both sides of the back of the main body 1 of the distribution cabinet are fixedly connected to a screw B8. The connecting plate 7 has a through hole B9 for the screw B8 to pass through, and a nut B12 is threaded onto the outer wall of the screw B8.

[0032] During installation, insert the connecting plates 7 on both sides of the battery 3 into the screws B8 on the main body 1 of the distribution cabinet. After passing through, turn the nut B12 clockwise to install the nut B12 on the screw B8. The nut B12 moves along the screw B8 and slowly presses against the surface of the connecting plate 7, thus installing the battery 3 on the main body 1 of the distribution cabinet. Conversely, remove the nut B12 and pull the connecting plate 7 off the screw B8 to complete the disassembly of the battery 3. The disassembly and assembly are relatively convenient.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A dual-power switching distribution cabinet, comprising a cabinet body (1), characterized in that: A dual power switching device (2) is installed on the upper back of the main body (1) of the power distribution cabinet. One interface of the dual power switching device (2) is connected to an external power source, and the other interface is connected to a battery (3) on the main body (1) of the power distribution cabinet. The battery (3) is also connected to an external power source.

2. The dual-power switching distribution cabinet according to claim 1, characterized in that: The connector (10) connecting the external power source and the battery (3) to the dual power switching device (2) has grooves (4) on both the upper and lower sides. The surface of the dual power switching device (2) is provided with locking components (6) on the upper and lower sides of the interface (11) for inserting the protrusion (5) into the groove (4) and fixing its position.

3. A dual-power switching distribution cabinet according to claim 2, characterized in that: The locking assembly (6) includes horizontal plates (601) fixed on the upper and lower sides of the surface of the dual power switching device (2), and a screw A (602) is fixedly connected between the horizontal plates (601). A movable plate (603) is sleeved on both the upper and lower sides of the screw A (602). A through hole A (604) is opened on the movable plate (603) for the screw A (602) to pass through. Nuts A (605) are threadedly connected to both the upper and lower sides of the movable plate (603) of the screw A (602). The protrusion (5) is fixed on both sides of the surface of the movable plate (603).

4. A dual-power switching distribution cabinet according to claim 3, characterized in that: The dual power switching device (2) has guide rails (606) fixedly connected to both sides of its surface, and the two sides of the moving plate (603) are slidably connected to the guide rails (606) by sliders (607).

5. A dual-power switching distribution cabinet according to claim 1, characterized in that: The battery (3) is detachably connected to the main body (1) of the power distribution cabinet.

6. A dual-power switching distribution cabinet according to claim 5, characterized in that: Both sides of the battery (3) are fixedly connected to a connecting plate (7), and both sides of the back of the main body (1) of the power distribution cabinet are fixedly connected to a screw B (8). The connecting plate (7) has a through hole B (9) for the screw B (8) to pass through, and a nut B (12) is threaded onto the outer wall of the screw B (8).

7. A dual-power switching distribution cabinet according to claim 1, characterized in that: The dual power supply switching device (2) integrates overload protection and short circuit protection modules.

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